├── .gitignore ├── .gitmodules ├── Makefile ├── README.md ├── cqueue.h ├── datamodel.h ├── fcgihelper.h ├── queue.h ├── resphelper.h ├── scanner.cc ├── stb_image.h ├── stb_image_resize.h ├── stb_image_write.h ├── supersonic.cc ├── userdata.cc ├── userdata.h ├── util.cc └── util.h /.gitignore: -------------------------------------------------------------------------------- 1 | # Compiled Object files 2 | *.slo 3 | *.lo 4 | *.o 5 | *.obj 6 | 7 | # Precompiled Headers 8 | *.gch 9 | *.pch 10 | 11 | # Compiled Dynamic libraries 12 | *.so 13 | *.dylib 14 | *.dll 15 | 16 | # Fortran module files 17 | *.mod 18 | 19 | # Compiled Static libraries 20 | *.lai 21 | *.la 22 | *.a 23 | *.lib 24 | 25 | # Executables 26 | *.exe 27 | *.out 28 | *.app 29 | -------------------------------------------------------------------------------- /.gitmodules: -------------------------------------------------------------------------------- 1 | [submodule "argparse"] 2 | path = argparse 3 | url = https://github.com/hbristow/argparse.git 4 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | 2 | CXXFLAGS ?= -O2 -ggdb 3 | CXXFLAGS += -std=c++11 4 | SERVER_OBJS=supersonic.cc util.cc userdata.cc 5 | CLIENT_OBJS=scanner.cc util.cc 6 | 7 | all: supersonic-server supersonic-scanner 8 | 9 | 10 | supersonic-scanner: $(CLIENT_OBJS) 11 | g++ $(CXXFLAGS) -o supersonic-scanner $(CLIENT_OBJS) -lsqlite3 -ltag -lcrypto -lpthread 12 | 13 | supersonic-server: $(SERVER_OBJS) 14 | g++ $(CXXFLAGS) -o supersonic-server $(SERVER_OBJS) -lsqlite3 -lfcgi++ -lcrypto -lfcgi -lpthread 15 | 16 | clean: 17 | rm -f supersonic-scanner supersonic-server 18 | 19 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 | Supersonic 3 | ========== 4 | 5 | A Subsonic music server implemented in C++ 6 | 7 | What is this? 8 | ------------- 9 | 10 | Supersonic is a music server that implements the Subsonic API (well, not 11 | completely!) allowing users to stream music to any Subsonic-compatible client. 12 | 13 | It is implemented in C++ for low resource usage and speed, and provides a 14 | FastCGI interface for a Webserver to use (that is, you can use Nginx as your 15 | frontend). 16 | 17 | How do I build, run and use it? 18 | ------------------------------- 19 | 20 | To build simply run "make" and it should produce two binaries: 21 | 22 | * supersonic-server: Your server binary 23 | * supersonic-scanner: The CLI tool use to scan a music library 24 | 25 | You need the following libraries to build and run it: 26 | 27 | * sqlite3: To create and query music library databases 28 | * libcrypto: Used for hashing stuff 29 | * libfcgi++ & libfcgi: Server uses this to interface FastCGI servers 30 | * libtag: Used to extract date from MP3 and OGG files 31 | 32 | Now to scan your music library you can run: 33 | 34 | ```$ 35 | supersonic-scanner scan music.sqlite /your/music/lib/path 36 | ``` 37 | 38 | This will create a database (or update an existing one) with all the songs 39 | it can find. The scanner won't rescan any files that were already in the 40 | database, unless they have been updated (mtime has changed!). 41 | 42 | You will need users to access the service so run: 43 | 44 | ```$ 45 | supersonic-scanner useradd music.sqlite someusername supersecurepass 46 | supersonic-scanner userdel music.sqlite someusername 47 | ``` 48 | 49 | This is a bit rough for now, sorry for that! 50 | 51 | Once you are set you can start serving like this: 52 | 53 | ```$ 54 | spawn-fcgi -u machineuser -s /var/www/somepath/sock -M 666 -n -- \ 55 | supersonic --musicdb /db/path/music.db --search-dir /base/path/for/music/ 56 | ``` 57 | 58 | Spawn-fcgi will spawn the server and attach it to a local socket (you can use 59 | HTTP if you prefer, that depends on how you configure nginx/apache later). 60 | You will need to pass the database path and as many --search-dir as you want 61 | to indicate search paths for the music. The scanner stores relative paths 62 | in the database, so you will need to tell the server where the music lives 63 | (unless you specify absolute paths when scanning then you can simply use "/"). 64 | 65 | A simple example nginx config could look like: 66 | 67 | ``` 68 | server { 69 | listen 12345; 70 | location / { 71 | include fastcgi_params; 72 | fastcgi_pass unix:/var/www/somepath/sock; 73 | } 74 | } 75 | ``` 76 | 77 | 78 | -------------------------------------------------------------------------------- /cqueue.h: -------------------------------------------------------------------------------- 1 | 2 | // Created by David Guillen Fandos 2019 3 | 4 | #include 5 | #include 6 | #include 7 | #include 8 | 9 | template 10 | class ConcurrentQueue { 11 | public: 12 | ConcurrentQueue(unsigned max_size) : max_size_(max_size), nowriter(false) {} 13 | 14 | void close() { 15 | std::unique_lock lock(mutex_); 16 | nowriter = true; 17 | readvar.notify_all(); 18 | } 19 | 20 | void push(T item) { 21 | std::unique_lock lock(mutex_); 22 | while (q.size() >= max_size_) 23 | writevar.wait(lock); 24 | 25 | q.push_back(std::move(item)); 26 | queued_++; 27 | lock.unlock(); 28 | readvar.notify_one(); 29 | } 30 | 31 | bool pop(T *item) noexcept { 32 | std::unique_lock lock(mutex_); 33 | while (q.empty() && !nowriter) 34 | readvar.wait(lock); 35 | 36 | if (!q.empty()) { 37 | *item = std::move(q.front()); 38 | q.pop_front(); 39 | writevar.notify_one(); 40 | return true; 41 | } 42 | 43 | // Writer signaled end already 44 | return false; 45 | } 46 | 47 | std::size_t queued() const { 48 | std::unique_lock lock(mutex_); 49 | return queued_; 50 | } 51 | 52 | std::size_t size() const { 53 | std::unique_lock lock(mutex_); 54 | return q.size(); 55 | } 56 | 57 | std::size_t closed() const { 58 | std::unique_lock lock(mutex_); 59 | return nowriter; 60 | } 61 | 62 | private: 63 | unsigned max_size_, queued_; 64 | std::list q; // list of items 65 | mutable std::mutex mutex_; // protection mutex 66 | std::condition_variable readvar, writevar; // Wait variables 67 | std::atomic nowriter; // Indicates no more writes will happen 68 | }; 69 | 70 | 71 | -------------------------------------------------------------------------------- /datamodel.h: -------------------------------------------------------------------------------- 1 | 2 | #ifndef __DATA_MODEL__HH__ 3 | #define __DATA_MODEL__HH__ 4 | 5 | // Data model for the database. Represents Artists, Songs and Albums. 6 | 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | 14 | #include "util.h" 15 | #include "resphelper.h" 16 | 17 | enum classTypes { TYPE_ALBUM = 0, TYPE_ARTIST = 1, TYPE_SONG = 2, TYPE_ERROR = 3 }; 18 | 19 | class IdObj { 20 | public: 21 | std::string sid() const { return hexencode64(id); } 22 | uint64_t id; 23 | }; 24 | 25 | class Artist : public IdObj { 26 | public: 27 | Artist(sqlite3_stmt * stmt) { 28 | id = sqlite3_column_int64 (stmt, 0); 29 | name = std::string((char*)sqlite3_column_text (stmt, 1)); 30 | } 31 | std::string name; 32 | }; 33 | 34 | class Album : public IdObj { 35 | public: 36 | Album() {} 37 | Album(sqlite3_stmt * stmt) { 38 | id = sqlite3_column_int64 (stmt, 0); 39 | title = std::string((char*)sqlite3_column_text (stmt, 1)); 40 | artistid = sqlite3_column_int64 (stmt, 2); 41 | artist = std::string((char*)sqlite3_column_text (stmt, 3)); 42 | hascover = sqlite3_column_int(stmt, 4); 43 | } 44 | uint64_t artistid; 45 | std::string sartistid() const { return hexencode64(artistid); } 46 | std::string title, artist; 47 | int hascover; 48 | }; 49 | 50 | class Song : public IdObj { 51 | public: 52 | uint64_t albumid, artistid, filesize; 53 | std::string title, album, artist; 54 | unsigned trackn, duration, year, discn, bitRate; 55 | std::string genre, type; 56 | 57 | Song(sqlite3_stmt * stmt) { 58 | id = sqlite3_column_int64 (stmt, 0); 59 | title = std::string((char*)sqlite3_column_text (stmt, 1)); 60 | albumid = sqlite3_column_int64 (stmt, 2); 61 | album = std::string((char*)sqlite3_column_text (stmt, 3)); 62 | artistid = sqlite3_column_int64 (stmt, 4); 63 | artist = std::string((char*)sqlite3_column_text (stmt, 5)); 64 | 65 | trackn = sqlite3_column_int(stmt, 6); 66 | discn = sqlite3_column_int(stmt, 7); 67 | year = sqlite3_column_int(stmt, 8); 68 | duration = sqlite3_column_int(stmt, 9); 69 | bitRate = sqlite3_column_int(stmt,10); 70 | filesize = sqlite3_column_int(stmt,11); 71 | 72 | genre = std::string((char*)sqlite3_column_text (stmt, 12)); 73 | type = std::string((char*)sqlite3_column_text (stmt, 13)); 74 | } 75 | 76 | std::string sartistid() const { return hexencode64(artistid); } 77 | std::string salbumid() const { return hexencode64(albumid); } 78 | 79 | std::unordered_map getAttrs() const { 80 | return { 81 | {"id", DS(sid()) }, 82 | {"title", DS(title) }, 83 | {"parent", DS(salbumid()) }, 84 | {"album", DS(album) }, 85 | {"albumId", DS(salbumid()) }, 86 | {"artist", DS(artist) }, 87 | {"artistId", DS(sartistid()) }, 88 | {"track", DI(trackn) }, 89 | {"genre", DS(genre) }, 90 | {"duration", DI(duration) }, 91 | {"year", DI(year) }, 92 | {"discNumber", DI(discn) }, 93 | {"bitRate", DI(bitRate) }, 94 | {"suffix", DS(type) }, 95 | {"type", DS("music") }, 96 | {"size", DI(filesize) }, 97 | {"contentType", DS(mimetypes[type]) }, 98 | {"isDir", DB(false) }, 99 | {"coverArt", DS(salbumid()) }, 100 | }; 101 | } 102 | }; 103 | 104 | class DataModel { 105 | public: 106 | DataModel(sqlite3* sqldb) : sqldb(sqldb) { } 107 | 108 | bool checkCredentials(std::string user, std::string pass) { 109 | sqlite3_stmt *stmt; 110 | sqlite3_prepare_v2(sqldb, "SELECT * FROM users WHERE username=? AND password=?", -1, &stmt, NULL); 111 | sqlite3_bind_text(stmt, 1, user.c_str(), -1, NULL); 112 | sqlite3_bind_text(stmt, 2, pass.c_str(), -1, NULL); 113 | bool res = (sqlite3_step(stmt) == SQLITE_ROW); 114 | sqlite3_finalize(stmt); 115 | return res; 116 | } 117 | 118 | bool checkCredentialsMD5(std::string user, std::string token, std::string salt) { 119 | if (token.size() != 32) 120 | return false; 121 | 122 | sqlite3_stmt *stmt; 123 | sqlite3_prepare_v2(sqldb, "SELECT password FROM users WHERE username=?", -1, &stmt, NULL); 124 | sqlite3_bind_text(stmt, 1, user.c_str(), -1, NULL); 125 | if (sqlite3_step(stmt) == SQLITE_ROW) { 126 | // Query pass and get MD5, compare 127 | uint8_t h[MD5_DIGEST_LENGTH]; 128 | std::string ndgst = std::string((char*)sqlite3_column_text(stmt, 0)) + salt; 129 | MD5((uint8_t*)ndgst.c_str(), ndgst.size(), h); 130 | std::string dectoken = hexdecode(token); 131 | 132 | return !memcmp(dectoken.c_str(), h, MD5_DIGEST_LENGTH); 133 | } 134 | sqlite3_finalize(stmt); 135 | return false; 136 | } 137 | 138 | std::string getAlbumCover(uint64_t id, unsigned size) { 139 | const std::vector fields = { 140 | "cover128", "cover256", "cover512", "cover1024", "cover" 141 | }; 142 | unsigned off = (size > 1024 || !size) ? 4: 143 | (size > 512) ? 3: 144 | (size > 256) ? 2: 145 | (size > 128) ? 1:0; 146 | 147 | std::string ret; 148 | for (unsigned i = off; i < 5 && ret.empty(); i++) { 149 | sqlite3_stmt *stmt; 150 | sqlite3_prepare_v2(sqldb, ("SELECT " + fields[i] + 151 | " FROM albums WHERE id=?").c_str(), -1, &stmt, NULL); 152 | sqlite3_bind_int64(stmt, 1, id); 153 | if (sqlite3_step(stmt) == SQLITE_ROW) { 154 | auto length = sqlite3_column_bytes(stmt, 0); 155 | ret = std::string((char*)sqlite3_column_blob(stmt, 0), length); 156 | } 157 | sqlite3_finalize(stmt); 158 | } 159 | return ret; 160 | } 161 | 162 | std::string getSongFile(uint64_t id) { 163 | std::string filename; 164 | sqlite3_stmt *stmt; 165 | sqlite3_prepare_v2(sqldb, "SELECT filename FROM songs WHERE id=?", -1, &stmt, NULL); 166 | sqlite3_bind_int64(stmt, 1, id); 167 | if (sqlite3_step(stmt) == SQLITE_ROW) { 168 | filename = (char*)sqlite3_column_text (stmt, 0); 169 | } 170 | sqlite3_finalize(stmt); 171 | 172 | return filename; 173 | } 174 | 175 | std::list getAllAlbumsSorted(unsigned offset, unsigned size) { 176 | sqlite3_stmt *stmt; 177 | sqlite3_prepare_v2(sqldb, "SELECT `id`, title, artistid, artist, hascover " 178 | "FROM albums ORDER BY `title` COLLATE NOCASE ASC " 179 | "LIMIT ? OFFSET ?", -1, &stmt, NULL); 180 | sqlite3_bind_int64(stmt, 1, size); 181 | sqlite3_bind_int64(stmt, 2, offset); 182 | 183 | std::list albums; 184 | while (sqlite3_step(stmt) == SQLITE_ROW) 185 | albums.emplace_back(stmt); 186 | sqlite3_finalize(stmt); 187 | 188 | return albums; 189 | } 190 | 191 | std::list getAlbumsByArtist(uint64_t artistid) { 192 | sqlite3_stmt *stmt; 193 | sqlite3_prepare_v2(sqldb, "SELECT `id`, title, artistid, artist, hascover " 194 | "FROM albums WHERE artistid=? ORDER BY `title` " 195 | "COLLATE NOCASE ASC", -1, &stmt, NULL); 196 | sqlite3_bind_int64(stmt, 1, artistid); 197 | 198 | std::list albums; 199 | while (sqlite3_step(stmt) == SQLITE_ROW) 200 | albums.emplace_back(stmt); 201 | sqlite3_finalize(stmt); 202 | 203 | return albums; 204 | } 205 | 206 | Album getAlbum(uint64_t id) { 207 | sqlite3_stmt *stmt; 208 | sqlite3_prepare_v2(sqldb, "SELECT `id`, title, artistid, artist, hascover " 209 | "FROM albums WHERE `id`=?", -1, &stmt, NULL); 210 | sqlite3_bind_int64(stmt, 1, id); 211 | 212 | Album ret; 213 | if (sqlite3_step(stmt) == SQLITE_ROW) 214 | ret = Album(stmt); 215 | sqlite3_finalize(stmt); 216 | 217 | return ret; 218 | } 219 | 220 | std::list getArtists() { 221 | sqlite3_stmt *stmt; 222 | sqlite3_prepare_v2(sqldb, "SELECT `id`, `name` FROM artists ORDER BY `name` COLLATE NOCASE ASC", -1, &stmt, NULL); 223 | 224 | std::list artists; 225 | while (sqlite3_step(stmt) == SQLITE_ROW) 226 | artists.emplace_back(stmt); 227 | sqlite3_finalize(stmt); 228 | 229 | return artists; 230 | } 231 | 232 | std::unique_ptr getSong(uint64_t id) { 233 | sqlite3_stmt *stmt; 234 | sqlite3_prepare_v2(sqldb, "SELECT `id`, title, albumid, album, artistid, artist," 235 | "trackn, discn, year, duration, bitRate, filesize, genre, type FROM songs " 236 | "WHERE `id`=?", -1, &stmt, NULL); 237 | sqlite3_bind_int64(stmt, 1, id); 238 | 239 | Song *ret = nullptr; 240 | if (sqlite3_step(stmt) == SQLITE_ROW) 241 | ret = new Song(stmt); 242 | sqlite3_finalize(stmt); 243 | 244 | return std::unique_ptr(ret); 245 | } 246 | 247 | std::list getSongsByAlbum(uint64_t id) { 248 | sqlite3_stmt *stmt; 249 | sqlite3_prepare_v2(sqldb, "SELECT `id`, title, albumid, album, artistid, artist," 250 | "trackn, discn, year, duration, bitRate, filesize, genre, type FROM songs " 251 | "WHERE `albumid`=? ORDER BY trackn, discn ASC", -1, &stmt, NULL); 252 | 253 | sqlite3_bind_int64(stmt, 1, id); 254 | 255 | std::list songs; 256 | while (sqlite3_step(stmt) == SQLITE_ROW) 257 | songs.emplace_back(stmt); 258 | sqlite3_finalize(stmt); 259 | 260 | return songs; 261 | } 262 | 263 | std::list getRandomSongs(unsigned limit) { 264 | sqlite3_stmt *stmt; 265 | sqlite3_prepare_v2(sqldb, "SELECT `id`, title, albumid, album, artistid, artist, " 266 | "trackn, discn, year, duration, bitRate, filesize, genre, type FROM songs " 267 | "ORDER BY random() LIMIT ?", -1, &stmt, NULL); 268 | sqlite3_bind_int64(stmt, 1, limit); 269 | 270 | std::list songs; 271 | while (sqlite3_step(stmt) == SQLITE_ROW) 272 | songs.emplace_back(stmt); 273 | sqlite3_finalize(stmt); 274 | 275 | return songs; 276 | } 277 | 278 | classTypes classifyId(uint64_t id) { 279 | unsigned cl = id >> 60; 280 | if (cl >= TYPE_ERROR) 281 | return TYPE_ERROR; 282 | return (classTypes)cl; 283 | } 284 | 285 | private: 286 | sqlite3 * sqldb; 287 | }; 288 | 289 | #endif 290 | 291 | -------------------------------------------------------------------------------- /fcgihelper.h: -------------------------------------------------------------------------------- 1 | 2 | #ifndef __FCGI_HLPR__H__ 3 | #define __FCGI_HLPR__H__ 4 | 5 | #include 6 | 7 | // FastCGI responder helpers 8 | // Provides a simple responder for head/body and some ready to use responses 9 | // Overloading the class one can create an object that streams data out. 10 | 11 | class fcgi_responder { 12 | public: 13 | virtual ~fcgi_responder() {} 14 | virtual std::string header() = 0; 15 | virtual std::string respond() = 0; 16 | }; 17 | 18 | class str_resp : public fcgi_responder { 19 | public: 20 | str_resp(std::string h, std::string b) : head(h), body(b) {} 21 | virtual std::string header() { 22 | return head; 23 | } 24 | virtual std::string respond() { 25 | // Responds once! 26 | std::string r = body; 27 | body.clear(); 28 | return r; 29 | } 30 | private: 31 | std::string head, body; 32 | }; 33 | 34 | static str_resp *respond_not_found() { 35 | return new str_resp( 36 | "Status: 404\r\n" 37 | "Content-Type: text/plain\r\n" 38 | "Content-Length: 13\r\n", "URI not found"); 39 | } 40 | 41 | static str_resp *respond_method_not_allowed() { 42 | return new str_resp( 43 | "Status: 405\r\n" 44 | "Content-Type: text/plain\r\n" 45 | "Content-Length: 18\r\n", "Method not allowed"); 46 | } 47 | 48 | #endif 49 | 50 | 51 | -------------------------------------------------------------------------------- /queue.h: -------------------------------------------------------------------------------- 1 | 2 | #ifndef _CQUEUE__H__ 3 | #define _CQUEUE__H__ 4 | 5 | #include 6 | #include 7 | #include 8 | #include 9 | 10 | template 11 | class ConcurrentQueue { 12 | public: 13 | ConcurrentQueue() : nowriter(false) {} 14 | 15 | void close() { 16 | std::unique_lock lock(mutex_); 17 | nowriter = true; 18 | condvar.notify_all(); 19 | } 20 | 21 | void push(T item) { 22 | std::unique_lock lock(mutex_); 23 | q.push_back(std::move(item)); 24 | lock.unlock(); 25 | condvar.notify_one(); 26 | } 27 | 28 | bool pop(T *item) noexcept { 29 | std::unique_lock lock(mutex_); 30 | while (q.empty() && !nowriter) 31 | condvar.wait(lock); 32 | 33 | // Writer signaled end already 34 | if (nowriter) 35 | return false; 36 | 37 | *item = std::move(q.front()); 38 | q.pop_front(); 39 | return true; 40 | } 41 | 42 | private: 43 | std::list q; // list of items 44 | std::mutex mutex_; // protection mutex 45 | std::condition_variable condvar; // Wait variable 46 | std::atomic nowriter; // Indicates no more writes will happen 47 | }; 48 | 49 | #endif 50 | 51 | -------------------------------------------------------------------------------- /resphelper.h: -------------------------------------------------------------------------------- 1 | 2 | #ifndef _RESP_HLPR__H__ 3 | #define _RESP_HLPR__H__ 4 | 5 | #include 6 | #include 7 | #include 8 | #include 9 | 10 | #include "fcgihelper.h" 11 | 12 | static std::unordered_map mimetypes = {{"mp3", "audio/mpeg"}, {"ogg", "audio/ogg"} }; 13 | 14 | enum fmtType { TYPE_XML, TYPE_JSON, TYPE_JSONP }; 15 | enum datType { DATA_STR, DATA_INT, DATA_BOOL, DATA_NULL }; 16 | 17 | // Defines a data field, with its associated type and value 18 | struct DataField { 19 | datType type; 20 | std::string str; 21 | long long integer; 22 | bool boolean; 23 | 24 | bool null() const { return type == DATA_NULL; } 25 | 26 | // Serializes the content to XML or JSON 27 | std::string tostr(bool isxml) const { 28 | switch (type) { 29 | case DATA_STR: 30 | return "\"" + cescape(str, isxml) + "\""; 31 | case DATA_INT: 32 | if (isxml) 33 | return "\"" + std::to_string(integer) + "\""; 34 | return std::to_string(integer); 35 | case DATA_BOOL: 36 | if (isxml) 37 | return "\"" + std::string(boolean ? "true" : "false") + "\""; 38 | return boolean ? "true" : "false"; 39 | }; 40 | return {}; 41 | } 42 | }; 43 | 44 | #define DS(x) DataField{.type = DATA_STR, .str = (x), .integer = 0, .boolean = false} 45 | #define DI(x) DataField{.type = DATA_INT, .str = "", .integer = (long long)(x), .boolean = false} 46 | #define DB(x) DataField{.type = DATA_BOOL, .str = "", .integer = 0, .boolean = (x)} 47 | #define DN() DataField{.type = DATA_NULL, .str = "", .integer = 0, .boolean = false} 48 | 49 | // Response format helper, that wraps responses and provides helpers such as MIME 50 | class RespFmt { 51 | public: 52 | RespFmt(std::string fmt_str, std::string extended) : extended(extended) { 53 | if (fmt_str == "json") 54 | fmt = TYPE_JSON; 55 | else if (fmt_str == "jsonp") 56 | fmt = TYPE_JSONP; 57 | else 58 | fmt = TYPE_XML; 59 | } 60 | bool isjson() const { return fmt != TYPE_XML; } 61 | std::string mime() const { 62 | const char *types[] = { 63 | "text/xml", 64 | "application/json", 65 | "application/javascript" 66 | }; 67 | return types[fmt]; 68 | } 69 | std::string wrap(std::string c) { 70 | switch (fmt) { 71 | case TYPE_JSON: 72 | return "{" + c + "}"; 73 | case TYPE_JSONP: 74 | return extended + "({" + c + "});"; 75 | default: 76 | return "\n" + c; 77 | }; 78 | } 79 | 80 | fmtType fmt; 81 | std::string extended; 82 | }; 83 | 84 | class Entity { 85 | public: 86 | 87 | typedef std::unordered_map FieldMap; 88 | typedef std::unordered_map> ContentMap; 89 | 90 | Entity(RespFmt rfmt, std::string name, FieldMap attrs, std::list cvec = {}) 91 | : rfmt(rfmt), vrep(true), name(name), attrs(attrs) { 92 | for (auto c: cvec) 93 | content[c.name].push_back(c); 94 | } 95 | 96 | Entity(RespFmt rfmt, std::string name, FieldMap attrs, Entity e) 97 | : rfmt(rfmt), vrep(false), name(name), attrs(attrs) { 98 | content[e.name].push_back(e); 99 | } 100 | 101 | std::string to_string() const { 102 | if (rfmt.isjson()) 103 | return "\"" + name + "\": " + this->content_string(); 104 | else 105 | return this->content_string(); 106 | } 107 | 108 | std::string content_string() const { 109 | if (rfmt.isjson()) { 110 | std::string c; 111 | for (const auto it: attrs) 112 | if (!it.second.null()) 113 | c += "\"" + it.first + "\": " + it.second.tostr(false) + ",\n"; 114 | for (const auto it: content) { 115 | if (vrep) { 116 | c += "\"" + cescape(it.first) + "\": [\n"; 117 | for (const auto e: it.second) 118 | c += e.content_string() + ",\n"; 119 | c = c.substr(0, c.size()-2); 120 | c += "],\n"; 121 | } else { 122 | c += it.second.front().to_string() + "\n"; 123 | } 124 | } 125 | if (attrs.size() || content.size()) 126 | c = c.substr(0, c.size()-2); 127 | return "{\n" + c + "}\n"; 128 | }else{ 129 | std::string a, c; 130 | for (const auto it: attrs) 131 | if (!it.second.null()) 132 | a += " " + it.first + "=" + it.second.tostr(true) + ""; 133 | for (const auto it: content) 134 | for (const auto e: it.second) 135 | c += e.to_string(); 136 | return "<" + name + a + ">\n" + c + "\n"; 137 | } 138 | } 139 | str_resp* respond() { 140 | std::string rtype = rfmt.mime(); 141 | std::string c = rfmt.wrap(this->to_string()); 142 | return new str_resp("Status: 200\r\n" 143 | "Content-Type: " + rtype + "\r\n" 144 | "Content-Length: " + std::to_string(c.size()) + "\r\n", c); 145 | } 146 | 147 | 148 | static Entity wrap(Entity e) { 149 | return Entity(e.rfmt, "subsonic-response", 150 | {{"status", DS("ok")}, {"version", DS("1.9.0")}}, e); 151 | } 152 | static Entity wrap(RespFmt fmt) { 153 | return Entity(fmt, "subsonic-response", 154 | {{"status", DS("ok")}, {"version", DS("1.9.0")}}); 155 | } 156 | static Entity error(RespFmt fmt, unsigned code, std::string content) { 157 | return Entity(fmt, "subsonic-response", 158 | {{"status", DS("failed")}, {"version", DS("1.9.0")}}, 159 | Entity(fmt, "error", {{"code", DI(code)}, {"message", DS(content)}})); 160 | } 161 | 162 | RespFmt rfmt; 163 | bool vrep; 164 | std::string name; 165 | FieldMap attrs; 166 | ContentMap content; 167 | }; 168 | 169 | 170 | #endif 171 | 172 | -------------------------------------------------------------------------------- /scanner.cc: -------------------------------------------------------------------------------- 1 | 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | #include 26 | #include 27 | #include 28 | 29 | #include "util.h" 30 | #include "cqueue.h" 31 | 32 | #define STB_IMAGE_IMPLEMENTATION 33 | #define STB_IMAGE_RESIZE_IMPLEMENTATION 34 | #define STB_IMAGE_WRITE_IMPLEMENTATION 35 | #define STBI_WRITE_NO_STDIO 36 | #define STBI_NO_STDIO 37 | #include "stb_image.h" 38 | #include "stb_image_resize.h" 39 | #include "stb_image_write.h" 40 | 41 | using namespace std; 42 | 43 | const char * init_sql = "\ 44 | CREATE TABLE `albums` (\ 45 | `id` INTEGER NOT NULL UNIQUE,\ 46 | `title` TEXT,\ 47 | `artistid` INTEGER,\ 48 | `artist` TEXT,\ 49 | `hascover` INTEGER,\ 50 | `cover128` BLOB,\ 51 | `cover256` BLOB,\ 52 | `cover512` BLOB,\ 53 | `cover1024` BLOB,\ 54 | `cover` BLOB,\ 55 | PRIMARY KEY(id)\ 56 | );\ 57 | CREATE TABLE `artists` (\ 58 | `id` INTEGER NOT NULL UNIQUE,\ 59 | `name` TEXT,\ 60 | PRIMARY KEY(id)\ 61 | );\ 62 | CREATE TABLE `songs` (\ 63 | `id` INTEGER NOT NULL UNIQUE,\ 64 | `title` TEXT,\ 65 | `albumid` INTEGER,\ 66 | `album` TEXT,\ 67 | `artistid` INTEGER,\ 68 | `artist` TEXT,\ 69 | `trackn` INTEGER,\ 70 | `discn` INTEGER,\ 71 | `year` INTEGER,\ 72 | `duration` INTEGER,\ 73 | `bitRate` INTEGER,\ 74 | `genre` TEXT,\ 75 | `type` TEXT,\ 76 | `filename` TEXT,\ 77 | `timestamp` INTEGER,\ 78 | `filesize` INTEGER,\ 79 | PRIMARY KEY(id)\ 80 | );\ 81 | CREATE TABLE `users` (\ 82 | `username` TEXT NOT NULL UNIQUE,\ 83 | `password` TEXT,\ 84 | PRIMARY KEY(username)\ 85 | );\ 86 | "; 87 | 88 | void panic_if(bool cond, string text) { 89 | if (cond) { 90 | cerr << text << endl; 91 | exit(1); 92 | } 93 | } 94 | 95 | enum classTypes { TYPE_ALBUM = 0, TYPE_ARTIST = 1, TYPE_SONG = 2 }; 96 | 97 | uint64_t calcId(string s, classTypes ctype) { 98 | uint8_t h[SHA256_DIGEST_LENGTH]; 99 | SHA256((uint8_t*)s.c_str(), s.size(), h); 100 | 101 | uint64_t hash = a2i64(h); 102 | return (((uint64_t)ctype) << 60) | (hash & ((1ULL << 60) - 1)); 103 | } 104 | 105 | void insert_artist(sqlite3 * sqldb, string artist) { 106 | sqlite3_stmt *stmt; 107 | sqlite3_prepare_v2(sqldb, "INSERT OR REPLACE INTO `artists` (`id`, `name`) VALUES (?,?);", -1, &stmt, NULL); 108 | 109 | sqlite3_bind_int64(stmt, 1, calcId(artist, TYPE_ARTIST)); 110 | sqlite3_bind_text (stmt, 2, artist.c_str(), -1, NULL); 111 | 112 | sqlite3_step(stmt); 113 | sqlite3_finalize(stmt); 114 | } 115 | 116 | void wfn(void *ctx, void *data, int size) { 117 | *((std::string*)ctx) += std::string((char*)data, size); 118 | } 119 | 120 | std::set processed_albums; 121 | std::mutex albummutex; 122 | 123 | void insert_album(sqlite3 * sqldb, string album, string artist, string cover) { 124 | // Check if some other worker is already working/worked in this album. 125 | // This is to avoid processing covers more than once (expensive!) 126 | uint64_t albumid = calcId(album + "@" + artist, TYPE_ALBUM); 127 | if (!cover.empty()) { 128 | std::lock_guard g(albummutex); 129 | if (processed_albums.count(albumid)) 130 | return; 131 | processed_albums.insert(albumid); 132 | } 133 | 134 | // Create several versions of this cover, so we can serve different sizes 135 | const unsigned sizes[4] = {128, 256, 512, 1024}; 136 | std::string smallcover[4]; 137 | if (cover.size()) { 138 | int width, height, nchan; 139 | stbi_uc *original = stbi_load_from_memory((uint8_t*)cover.c_str(), cover.size(), 140 | &width, &height, &nchan, 3); 141 | 142 | for (unsigned i = 0; i < 4; i++) { 143 | int nw, nh; 144 | if (width > height) { 145 | nw = sizes[i]; 146 | nh = sizes[i] * (double)height / (double)width; 147 | }else{ 148 | nh = sizes[i]; 149 | nw = sizes[i] * (double)width / (double)height; 150 | } 151 | 152 | // We only shrink, never enlarge 153 | if (nw <= width && nh <= height) { 154 | unsigned osize = nw*nh*3; 155 | std::string tmpb(osize, '\0'); 156 | stbir_resize_uint8(original, width, height, 0, (uint8_t*)&tmpb[0], nw, nh, 0, 3); 157 | 158 | stbi_write_jpg_to_func(wfn, &smallcover[i], nw, nh, 3, tmpb.c_str(), 70); 159 | } 160 | } 161 | stbi_image_free(original); 162 | } 163 | 164 | sqlite3_stmt *stmt; 165 | sqlite3_prepare_v2(sqldb, "INSERT OR REPLACE INTO `albums` " 166 | "(`id`, `title`, `artistid`, `artist`, `hascover`, `cover`, " 167 | "`cover128`, `cover256`, `cover512`, `cover1024`) " 168 | "VALUES (?,?,?,?,?,?,?,?,?,?);", -1, &stmt, NULL); 169 | sqlite3_bind_int64(stmt, 1, albumid); 170 | sqlite3_bind_text (stmt, 2, album.c_str(), -1, NULL); 171 | sqlite3_bind_int64(stmt, 3, calcId(artist, TYPE_ARTIST)); 172 | sqlite3_bind_text (stmt, 4, artist.c_str(), -1, NULL); 173 | sqlite3_bind_int64(stmt, 5, cover.size() ? 1 : 0); 174 | sqlite3_bind_blob (stmt, 6, cover.data(), cover.size(), NULL); 175 | sqlite3_bind_blob (stmt, 7, smallcover[0].data(), smallcover[0].size(), NULL); 176 | sqlite3_bind_blob (stmt, 8, smallcover[1].data(), smallcover[1].size(), NULL); 177 | sqlite3_bind_blob (stmt, 9, smallcover[2].data(), smallcover[2].size(), NULL); 178 | sqlite3_bind_blob (stmt,10, smallcover[3].data(), smallcover[3].size(), NULL); 179 | sqlite3_step(stmt); 180 | sqlite3_finalize(stmt); 181 | } 182 | 183 | void insert_song(sqlite3 * sqldb, string filename, string title, 184 | string artist, string album, string type, string genre, 185 | unsigned tn, unsigned year, unsigned discn, unsigned duration, 186 | unsigned bitrate, uint64_t timestamp, uint64_t filesize) { 187 | 188 | sqlite3_stmt *stmt; 189 | sqlite3_prepare_v2(sqldb, "INSERT OR REPLACE INTO `songs` " 190 | "(`id`, `title`, `albumid`, `album`, `artistid`, `artist`, `type`, `genre`, " 191 | "`trackn`, `year`, `discn`, `duration`, `bitRate`, `filename`, `timestamp`, `filesize`)" 192 | " VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);", -1, &stmt, NULL); 193 | 194 | sqlite3_bind_int64(stmt, 1, calcId(to_string(tn) + "@" + to_string(discn) + "@" + title + "@" + album + "@" + artist, TYPE_SONG)); 195 | sqlite3_bind_text (stmt, 2, title.c_str(), -1, NULL); 196 | sqlite3_bind_int64(stmt, 3, calcId(album + "@" + artist, TYPE_ALBUM)); 197 | sqlite3_bind_text (stmt, 4, album.c_str(), -1, NULL); 198 | sqlite3_bind_int64(stmt, 5, calcId(artist, TYPE_ARTIST)); 199 | sqlite3_bind_text (stmt, 6, artist.c_str(), -1, NULL); 200 | sqlite3_bind_text (stmt, 7, type.c_str(), -1, NULL); 201 | sqlite3_bind_text (stmt, 8, genre.c_str(), -1, NULL); 202 | sqlite3_bind_int (stmt, 9, tn); 203 | sqlite3_bind_int (stmt,10, year); 204 | sqlite3_bind_int (stmt,11, discn); 205 | sqlite3_bind_int (stmt,12, duration); 206 | sqlite3_bind_int (stmt,13, bitrate); 207 | sqlite3_bind_text (stmt,14, filename.c_str(), -1, NULL); 208 | sqlite3_bind_int64(stmt,15, timestamp); 209 | sqlite3_bind_int64(stmt,16, filesize); 210 | 211 | if (sqlite3_step(stmt) != SQLITE_DONE) { 212 | cout << "Err " << filename << endl; 213 | cout << sqlite3_errmsg(sqldb) << endl; 214 | } 215 | 216 | sqlite3_finalize(stmt); 217 | } 218 | 219 | void scan_music_file(sqlite3 * sqldb, string fullpath) { 220 | string ext = fullpath.substr(fullpath.size()-3); 221 | std::transform(ext.begin(), ext.end(), ext.begin(), ::tolower); 222 | 223 | if (ext != "mp3" && ext != "ogg") 224 | return; 225 | 226 | // Do not process the file if it has (presumably) not changed 227 | struct stat attrs; 228 | stat(fullpath.c_str(), &attrs); 229 | 230 | sqlite3_stmt *stmt; 231 | sqlite3_prepare_v2(sqldb, "SELECT timestamp FROM songs WHERE filename == ? AND timestamp == ? AND filesize == ?", 232 | -1, &stmt, NULL); 233 | sqlite3_bind_text (stmt, 1, fullpath.c_str(), -1, NULL); 234 | sqlite3_bind_int64(stmt, 2, attrs.st_mtime); 235 | sqlite3_bind_int64(stmt, 3, attrs.st_size); 236 | bool nochanges = (sqlite3_step(stmt) == SQLITE_ROW); 237 | sqlite3_finalize(stmt); 238 | 239 | if (nochanges) 240 | return; 241 | 242 | TagLib::FileRef f(fullpath.c_str()); 243 | if (f.isNull()) 244 | return; 245 | 246 | TagLib::Tag *tag = f.tag(); 247 | if (!tag) 248 | return; 249 | 250 | // Read basic properties 251 | TagLib::AudioProperties *properties = f.audioProperties(); 252 | if (!properties) 253 | return; 254 | 255 | int discn = 0; 256 | if (tag->properties().contains("DISCNUMBER")) 257 | discn = tag->properties()["DISCNUMBER"][0].toInt(); 258 | 259 | std::string albumartist = tag->artist().toCString(true); 260 | if (tag->properties().contains("ALBUMARTIST")) 261 | albumartist = tag->properties()["ALBUMARTIST"][0].toCString(true); 262 | 263 | string cover; 264 | if (ext == "mp3") { 265 | TagLib::MPEG::File audioFile(fullpath.c_str()); 266 | TagLib::ID3v2::Tag *mp3_tag = audioFile.ID3v2Tag(true); 267 | 268 | if (mp3_tag) { 269 | auto frames = mp3_tag->frameList("APIC"); 270 | if (!frames.isEmpty()) { 271 | auto frame = static_cast(frames.front()); 272 | cover = string(frame->picture().data(), frame->picture().size()); 273 | } 274 | if (mp3_tag->properties().contains("ALBUMARTIST")) 275 | albumartist = mp3_tag->properties()["ALBUMARTIST"][0].toCString(true); 276 | if (mp3_tag->properties().contains("DISCNUMBER")) 277 | discn = mp3_tag->properties()["DISCNUMBER"][0].toInt(); 278 | } 279 | } 280 | else if (ext == "ogg") { 281 | auto vorbis_tag = dynamic_cast(tag); 282 | if (vorbis_tag) { 283 | // Rely on these fields better than any other generic ones. 284 | if (vorbis_tag->properties().contains("ALBUMARTIST")) 285 | albumartist = vorbis_tag->properties()["ALBUMARTIST"][0].toCString(true); 286 | if (vorbis_tag->properties().contains("DISCNUMBER")) 287 | discn = vorbis_tag->properties()["DISCNUMBER"][0].toInt(); 288 | 289 | // Extract pictures one way 290 | for (auto t : std::vector({ 291 | TagLib::FLAC::Picture::FrontCover, 292 | TagLib::FLAC::Picture::Media, 293 | TagLib::FLAC::Picture::Other})) { 294 | 295 | for (const auto & pic : vorbis_tag->pictureList()) 296 | if (pic->type() == t && cover.empty()) 297 | cover = std::string(pic->data().data(), pic->data().size()); 298 | } 299 | if (vorbis_tag->pictureList().size() && cover.empty()) 300 | cover = std::string(vorbis_tag->pictureList()[0]->data().data(), 301 | vorbis_tag->pictureList()[0]->data().size()); 302 | 303 | // Or another :D 304 | if (vorbis_tag->properties().contains("METADATA_BLOCK_PICTURE")) { 305 | auto cdata = vorbis_tag->properties()["METADATA_BLOCK_PICTURE"][0].data(TagLib::String::UTF8); 306 | cover = base64Decode(string(cdata.data(), cdata.size())); 307 | TagLib::FLAC::Picture picture; 308 | picture.parse(TagLib::ByteVector(cover.c_str(), cover.size())); 309 | cover = string(picture.data().data(), picture.data().size()); 310 | } 311 | } 312 | } 313 | 314 | insert_song(sqldb, fullpath, tag->title().toCString(true), albumartist, 315 | tag->album().toCString(true), ext, tag->genre().toCString(true), 316 | tag->track(), tag->year(), discn, properties->length(), properties->bitrate(), 317 | attrs.st_mtime, attrs.st_size); 318 | 319 | insert_album(sqldb, tag->album().toCString(true), albumartist, cover); 320 | insert_artist(sqldb, albumartist); 321 | } 322 | 323 | void scan_fs(string name, ConcurrentQueue *fileq) { 324 | DIR *dir; 325 | struct dirent *entry; 326 | 327 | if (!(dir = opendir(name.c_str()))) return; 328 | if (!(entry = readdir(dir))) return; 329 | 330 | do { 331 | string fullpath = name + "/" + string(entry->d_name); 332 | string ext = fullpath.substr(fullpath.size()-3); 333 | 334 | struct stat statbuf; 335 | stat(fullpath.c_str(), &statbuf); 336 | if (S_ISDIR(statbuf.st_mode)) { 337 | if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) 338 | continue; 339 | scan_fs(fullpath, fileq); 340 | } 341 | else 342 | fileq->push(fullpath); 343 | } while ((entry = readdir(dir))); 344 | closedir(dir); 345 | } 346 | 347 | void scan_worker(sqlite3 * sqldb, ConcurrentQueue *fileq) { 348 | std::string filename; 349 | while (fileq->pop(&filename)) 350 | scan_music_file(sqldb, filename); 351 | } 352 | 353 | void status_thread(ConcurrentQueue *fileq) { 354 | while (!fileq->closed()) { 355 | std::cout << (fileq->queued() - fileq->size()) << "/" << fileq->queued() << " \r"; 356 | std::cout.flush(); 357 | sleep(1); 358 | } 359 | } 360 | 361 | int main(int argc, char* argv[]) { 362 | if (argc < 3) { 363 | fprintf(stderr, 364 | "Usage: %s action [args...]\n" 365 | " %s scan file.db musicdir/ \n" 366 | " %s useradd file.db username password\n" 367 | " %s userdel file.db username\n", 368 | argv[0],argv[0],argv[0],argv[0]); 369 | return 1; 370 | } 371 | string action = argv[1]; 372 | string dbpath = argv[2]; 373 | unsigned nthreads = atoi(getenv("NTHREADS") ? : "4") & 255; 374 | std::cerr << "Using " << nthreads << " threads" << std::endl; 375 | 376 | // Create a new sqlite db if file does not exist 377 | sqlite3 * sqldb; 378 | int ok = sqlite3_open_v2( 379 | dbpath.c_str(), 380 | &sqldb, 381 | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_LOCK_EXCLUSIVE, 382 | NULL 383 | ); 384 | panic_if(ok != SQLITE_OK, "Could not open sqlite3 database!"); 385 | sqlite3_exec(sqldb, "PRAGMA synchronous = OFF", NULL, NULL, NULL); 386 | 387 | if (action == "scan") { 388 | string musicdir = argv[3]; 389 | 390 | sqlite3_exec(sqldb, init_sql, NULL, NULL, NULL); 391 | 392 | // Start scanning and adding stuff to the database 393 | ConcurrentQueue fileq(1024); 394 | std::vector tpool; 395 | for (unsigned i = 0; i < nthreads; i++) 396 | tpool.emplace_back(scan_worker, sqldb, &fileq); 397 | tpool.emplace_back(status_thread, &fileq); 398 | scan_fs(musicdir, &fileq); 399 | fileq.close(); 400 | for (auto & t : tpool) 401 | t.join(); 402 | } 403 | if (action == "useradd") { 404 | string user = argv[3]; 405 | string pass = argv[4]; 406 | 407 | sqlite3_exec(sqldb, init_sql, NULL, NULL, NULL); 408 | 409 | sqlite3_stmt *stmt; 410 | sqlite3_prepare_v2(sqldb, "INSERT INTO `users` (`username`, `password`) VALUES (?,?);", -1, &stmt, NULL); 411 | 412 | sqlite3_bind_text (stmt, 1, user.c_str(), -1, NULL); 413 | sqlite3_bind_text (stmt, 2, pass.c_str(), -1, NULL); 414 | 415 | if (sqlite3_step(stmt) != SQLITE_DONE) 416 | cerr << "Error adding user " << sqlite3_errmsg(sqldb) << endl; 417 | sqlite3_finalize(stmt); 418 | } 419 | 420 | // Close and write to disk 421 | sqlite3_close(sqldb); 422 | 423 | return 0; 424 | } 425 | 426 | -------------------------------------------------------------------------------- /stb_image_write.h: -------------------------------------------------------------------------------- 1 | /* stb_image_write - v1.14 - public domain - http://nothings.org/stb 2 | writes out PNG/BMP/TGA/JPEG/HDR images to C stdio - Sean Barrett 2010-2015 3 | no warranty implied; use at your own risk 4 | 5 | Before #including, 6 | 7 | #define STB_IMAGE_WRITE_IMPLEMENTATION 8 | 9 | in the file that you want to have the implementation. 10 | 11 | Will probably not work correctly with strict-aliasing optimizations. 12 | 13 | ABOUT: 14 | 15 | This header file is a library for writing images to C stdio or a callback. 16 | 17 | The PNG output is not optimal; it is 20-50% larger than the file 18 | written by a decent optimizing implementation; though providing a custom 19 | zlib compress function (see STBIW_ZLIB_COMPRESS) can mitigate that. 20 | This library is designed for source code compactness and simplicity, 21 | not optimal image file size or run-time performance. 22 | 23 | BUILDING: 24 | 25 | You can #define STBIW_ASSERT(x) before the #include to avoid using assert.h. 26 | You can #define STBIW_MALLOC(), STBIW_REALLOC(), and STBIW_FREE() to replace 27 | malloc,realloc,free. 28 | You can #define STBIW_MEMMOVE() to replace memmove() 29 | You can #define STBIW_ZLIB_COMPRESS to use a custom zlib-style compress function 30 | for PNG compression (instead of the builtin one), it must have the following signature: 31 | unsigned char * my_compress(unsigned char *data, int data_len, int *out_len, int quality); 32 | The returned data will be freed with STBIW_FREE() (free() by default), 33 | so it must be heap allocated with STBIW_MALLOC() (malloc() by default), 34 | 35 | UNICODE: 36 | 37 | If compiling for Windows and you wish to use Unicode filenames, compile 38 | with 39 | #define STBIW_WINDOWS_UTF8 40 | and pass utf8-encoded filenames. Call stbiw_convert_wchar_to_utf8 to convert 41 | Windows wchar_t filenames to utf8. 42 | 43 | USAGE: 44 | 45 | There are five functions, one for each image file format: 46 | 47 | int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); 48 | int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); 49 | int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); 50 | int stbi_write_jpg(char const *filename, int w, int h, int comp, const void *data, int quality); 51 | int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data); 52 | 53 | void stbi_flip_vertically_on_write(int flag); // flag is non-zero to flip data vertically 54 | 55 | There are also five equivalent functions that use an arbitrary write function. You are 56 | expected to open/close your file-equivalent before and after calling these: 57 | 58 | int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data, int stride_in_bytes); 59 | int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); 60 | int stbi_write_tga_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); 61 | int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const float *data); 62 | int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality); 63 | 64 | where the callback is: 65 | void stbi_write_func(void *context, void *data, int size); 66 | 67 | You can configure it with these global variables: 68 | int stbi_write_tga_with_rle; // defaults to true; set to 0 to disable RLE 69 | int stbi_write_png_compression_level; // defaults to 8; set to higher for more compression 70 | int stbi_write_force_png_filter; // defaults to -1; set to 0..5 to force a filter mode 71 | 72 | 73 | You can define STBI_WRITE_NO_STDIO to disable the file variant of these 74 | functions, so the library will not use stdio.h at all. However, this will 75 | also disable HDR writing, because it requires stdio for formatted output. 76 | 77 | Each function returns 0 on failure and non-0 on success. 78 | 79 | The functions create an image file defined by the parameters. The image 80 | is a rectangle of pixels stored from left-to-right, top-to-bottom. 81 | Each pixel contains 'comp' channels of data stored interleaved with 8-bits 82 | per channel, in the following order: 1=Y, 2=YA, 3=RGB, 4=RGBA. (Y is 83 | monochrome color.) The rectangle is 'w' pixels wide and 'h' pixels tall. 84 | The *data pointer points to the first byte of the top-left-most pixel. 85 | For PNG, "stride_in_bytes" is the distance in bytes from the first byte of 86 | a row of pixels to the first byte of the next row of pixels. 87 | 88 | PNG creates output files with the same number of components as the input. 89 | The BMP format expands Y to RGB in the file format and does not 90 | output alpha. 91 | 92 | PNG supports writing rectangles of data even when the bytes storing rows of 93 | data are not consecutive in memory (e.g. sub-rectangles of a larger image), 94 | by supplying the stride between the beginning of adjacent rows. The other 95 | formats do not. (Thus you cannot write a native-format BMP through the BMP 96 | writer, both because it is in BGR order and because it may have padding 97 | at the end of the line.) 98 | 99 | PNG allows you to set the deflate compression level by setting the global 100 | variable 'stbi_write_png_compression_level' (it defaults to 8). 101 | 102 | HDR expects linear float data. Since the format is always 32-bit rgb(e) 103 | data, alpha (if provided) is discarded, and for monochrome data it is 104 | replicated across all three channels. 105 | 106 | TGA supports RLE or non-RLE compressed data. To use non-RLE-compressed 107 | data, set the global variable 'stbi_write_tga_with_rle' to 0. 108 | 109 | JPEG does ignore alpha channels in input data; quality is between 1 and 100. 110 | Higher quality looks better but results in a bigger image. 111 | JPEG baseline (no JPEG progressive). 112 | 113 | CREDITS: 114 | 115 | 116 | Sean Barrett - PNG/BMP/TGA 117 | Baldur Karlsson - HDR 118 | Jean-Sebastien Guay - TGA monochrome 119 | Tim Kelsey - misc enhancements 120 | Alan Hickman - TGA RLE 121 | Emmanuel Julien - initial file IO callback implementation 122 | Jon Olick - original jo_jpeg.cpp code 123 | Daniel Gibson - integrate JPEG, allow external zlib 124 | Aarni Koskela - allow choosing PNG filter 125 | 126 | bugfixes: 127 | github:Chribba 128 | Guillaume Chereau 129 | github:jry2 130 | github:romigrou 131 | Sergio Gonzalez 132 | Jonas Karlsson 133 | Filip Wasil 134 | Thatcher Ulrich 135 | github:poppolopoppo 136 | Patrick Boettcher 137 | github:xeekworx 138 | Cap Petschulat 139 | Simon Rodriguez 140 | Ivan Tikhonov 141 | github:ignotion 142 | Adam Schackart 143 | 144 | LICENSE 145 | 146 | See end of file for license information. 147 | 148 | */ 149 | 150 | #ifndef INCLUDE_STB_IMAGE_WRITE_H 151 | #define INCLUDE_STB_IMAGE_WRITE_H 152 | 153 | #include 154 | 155 | // if STB_IMAGE_WRITE_STATIC causes problems, try defining STBIWDEF to 'inline' or 'static inline' 156 | #ifndef STBIWDEF 157 | #ifdef STB_IMAGE_WRITE_STATIC 158 | #define STBIWDEF static 159 | #else 160 | #ifdef __cplusplus 161 | #define STBIWDEF extern "C" 162 | #else 163 | #define STBIWDEF extern 164 | #endif 165 | #endif 166 | #endif 167 | 168 | #ifndef STB_IMAGE_WRITE_STATIC // C++ forbids static forward declarations 169 | extern int stbi_write_tga_with_rle; 170 | extern int stbi_write_png_compression_level; 171 | extern int stbi_write_force_png_filter; 172 | #endif 173 | 174 | #ifndef STBI_WRITE_NO_STDIO 175 | STBIWDEF int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); 176 | STBIWDEF int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); 177 | STBIWDEF int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); 178 | STBIWDEF int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data); 179 | STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality); 180 | 181 | #ifdef STBI_WINDOWS_UTF8 182 | STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input); 183 | #endif 184 | #endif 185 | 186 | typedef void stbi_write_func(void *context, void *data, int size); 187 | 188 | STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data, int stride_in_bytes); 189 | STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); 190 | STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); 191 | STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const float *data); 192 | STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality); 193 | 194 | STBIWDEF void stbi_flip_vertically_on_write(int flip_boolean); 195 | 196 | #endif//INCLUDE_STB_IMAGE_WRITE_H 197 | 198 | #ifdef STB_IMAGE_WRITE_IMPLEMENTATION 199 | 200 | #ifdef _WIN32 201 | #ifndef _CRT_SECURE_NO_WARNINGS 202 | #define _CRT_SECURE_NO_WARNINGS 203 | #endif 204 | #ifndef _CRT_NONSTDC_NO_DEPRECATE 205 | #define _CRT_NONSTDC_NO_DEPRECATE 206 | #endif 207 | #endif 208 | 209 | #ifndef STBI_WRITE_NO_STDIO 210 | #include 211 | #endif // STBI_WRITE_NO_STDIO 212 | 213 | #include 214 | #include 215 | #include 216 | #include 217 | 218 | #if defined(STBIW_MALLOC) && defined(STBIW_FREE) && (defined(STBIW_REALLOC) || defined(STBIW_REALLOC_SIZED)) 219 | // ok 220 | #elif !defined(STBIW_MALLOC) && !defined(STBIW_FREE) && !defined(STBIW_REALLOC) && !defined(STBIW_REALLOC_SIZED) 221 | // ok 222 | #else 223 | #error "Must define all or none of STBIW_MALLOC, STBIW_FREE, and STBIW_REALLOC (or STBIW_REALLOC_SIZED)." 224 | #endif 225 | 226 | #ifndef STBIW_MALLOC 227 | #define STBIW_MALLOC(sz) malloc(sz) 228 | #define STBIW_REALLOC(p,newsz) realloc(p,newsz) 229 | #define STBIW_FREE(p) free(p) 230 | #endif 231 | 232 | #ifndef STBIW_REALLOC_SIZED 233 | #define STBIW_REALLOC_SIZED(p,oldsz,newsz) STBIW_REALLOC(p,newsz) 234 | #endif 235 | 236 | 237 | #ifndef STBIW_MEMMOVE 238 | #define STBIW_MEMMOVE(a,b,sz) memmove(a,b,sz) 239 | #endif 240 | 241 | 242 | #ifndef STBIW_ASSERT 243 | #include 244 | #define STBIW_ASSERT(x) assert(x) 245 | #endif 246 | 247 | #define STBIW_UCHAR(x) (unsigned char) ((x) & 0xff) 248 | 249 | #ifdef STB_IMAGE_WRITE_STATIC 250 | static int stbi_write_png_compression_level = 8; 251 | static int stbi_write_tga_with_rle = 1; 252 | static int stbi_write_force_png_filter = -1; 253 | #else 254 | int stbi_write_png_compression_level = 8; 255 | int stbi_write_tga_with_rle = 1; 256 | int stbi_write_force_png_filter = -1; 257 | #endif 258 | 259 | static int stbi__flip_vertically_on_write = 0; 260 | 261 | STBIWDEF void stbi_flip_vertically_on_write(int flag) 262 | { 263 | stbi__flip_vertically_on_write = flag; 264 | } 265 | 266 | typedef struct 267 | { 268 | stbi_write_func *func; 269 | void *context; 270 | } stbi__write_context; 271 | 272 | // initialize a callback-based context 273 | static void stbi__start_write_callbacks(stbi__write_context *s, stbi_write_func *c, void *context) 274 | { 275 | s->func = c; 276 | s->context = context; 277 | } 278 | 279 | #ifndef STBI_WRITE_NO_STDIO 280 | 281 | static void stbi__stdio_write(void *context, void *data, int size) 282 | { 283 | fwrite(data,1,size,(FILE*) context); 284 | } 285 | 286 | #if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) 287 | #ifdef __cplusplus 288 | #define STBIW_EXTERN extern "C" 289 | #else 290 | #define STBIW_EXTERN extern 291 | #endif 292 | STBIW_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar(unsigned int cp, unsigned long flags, const char *str, int cbmb, wchar_t *widestr, int cchwide); 293 | STBIW_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, char *str, int cbmb, const char *defchar, int *used_default); 294 | 295 | STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) 296 | { 297 | return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); 298 | } 299 | #endif 300 | 301 | static FILE *stbiw__fopen(char const *filename, char const *mode) 302 | { 303 | FILE *f; 304 | #if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) 305 | wchar_t wMode[64]; 306 | wchar_t wFilename[1024]; 307 | if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename))) 308 | return 0; 309 | 310 | if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode))) 311 | return 0; 312 | 313 | #if _MSC_VER >= 1400 314 | if (0 != _wfopen_s(&f, wFilename, wMode)) 315 | f = 0; 316 | #else 317 | f = _wfopen(wFilename, wMode); 318 | #endif 319 | 320 | #elif defined(_MSC_VER) && _MSC_VER >= 1400 321 | if (0 != fopen_s(&f, filename, mode)) 322 | f=0; 323 | #else 324 | f = fopen(filename, mode); 325 | #endif 326 | return f; 327 | } 328 | 329 | static int stbi__start_write_file(stbi__write_context *s, const char *filename) 330 | { 331 | FILE *f = stbiw__fopen(filename, "wb"); 332 | stbi__start_write_callbacks(s, stbi__stdio_write, (void *) f); 333 | return f != NULL; 334 | } 335 | 336 | static void stbi__end_write_file(stbi__write_context *s) 337 | { 338 | fclose((FILE *)s->context); 339 | } 340 | 341 | #endif // !STBI_WRITE_NO_STDIO 342 | 343 | typedef unsigned int stbiw_uint32; 344 | typedef int stb_image_write_test[sizeof(stbiw_uint32)==4 ? 1 : -1]; 345 | 346 | static void stbiw__writefv(stbi__write_context *s, const char *fmt, va_list v) 347 | { 348 | while (*fmt) { 349 | switch (*fmt++) { 350 | case ' ': break; 351 | case '1': { unsigned char x = STBIW_UCHAR(va_arg(v, int)); 352 | s->func(s->context,&x,1); 353 | break; } 354 | case '2': { int x = va_arg(v,int); 355 | unsigned char b[2]; 356 | b[0] = STBIW_UCHAR(x); 357 | b[1] = STBIW_UCHAR(x>>8); 358 | s->func(s->context,b,2); 359 | break; } 360 | case '4': { stbiw_uint32 x = va_arg(v,int); 361 | unsigned char b[4]; 362 | b[0]=STBIW_UCHAR(x); 363 | b[1]=STBIW_UCHAR(x>>8); 364 | b[2]=STBIW_UCHAR(x>>16); 365 | b[3]=STBIW_UCHAR(x>>24); 366 | s->func(s->context,b,4); 367 | break; } 368 | default: 369 | STBIW_ASSERT(0); 370 | return; 371 | } 372 | } 373 | } 374 | 375 | static void stbiw__writef(stbi__write_context *s, const char *fmt, ...) 376 | { 377 | va_list v; 378 | va_start(v, fmt); 379 | stbiw__writefv(s, fmt, v); 380 | va_end(v); 381 | } 382 | 383 | static void stbiw__putc(stbi__write_context *s, unsigned char c) 384 | { 385 | s->func(s->context, &c, 1); 386 | } 387 | 388 | static void stbiw__write3(stbi__write_context *s, unsigned char a, unsigned char b, unsigned char c) 389 | { 390 | unsigned char arr[3]; 391 | arr[0] = a; arr[1] = b; arr[2] = c; 392 | s->func(s->context, arr, 3); 393 | } 394 | 395 | static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, int write_alpha, int expand_mono, unsigned char *d) 396 | { 397 | unsigned char bg[3] = { 255, 0, 255}, px[3]; 398 | int k; 399 | 400 | if (write_alpha < 0) 401 | s->func(s->context, &d[comp - 1], 1); 402 | 403 | switch (comp) { 404 | case 2: // 2 pixels = mono + alpha, alpha is written separately, so same as 1-channel case 405 | case 1: 406 | if (expand_mono) 407 | stbiw__write3(s, d[0], d[0], d[0]); // monochrome bmp 408 | else 409 | s->func(s->context, d, 1); // monochrome TGA 410 | break; 411 | case 4: 412 | if (!write_alpha) { 413 | // composite against pink background 414 | for (k = 0; k < 3; ++k) 415 | px[k] = bg[k] + ((d[k] - bg[k]) * d[3]) / 255; 416 | stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); 417 | break; 418 | } 419 | /* FALLTHROUGH */ 420 | case 3: 421 | stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); 422 | break; 423 | } 424 | if (write_alpha > 0) 425 | s->func(s->context, &d[comp - 1], 1); 426 | } 427 | 428 | static void stbiw__write_pixels(stbi__write_context *s, int rgb_dir, int vdir, int x, int y, int comp, void *data, int write_alpha, int scanline_pad, int expand_mono) 429 | { 430 | stbiw_uint32 zero = 0; 431 | int i,j, j_end; 432 | 433 | if (y <= 0) 434 | return; 435 | 436 | if (stbi__flip_vertically_on_write) 437 | vdir *= -1; 438 | 439 | if (vdir < 0) { 440 | j_end = -1; j = y-1; 441 | } else { 442 | j_end = y; j = 0; 443 | } 444 | 445 | for (; j != j_end; j += vdir) { 446 | for (i=0; i < x; ++i) { 447 | unsigned char *d = (unsigned char *) data + (j*x+i)*comp; 448 | stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); 449 | } 450 | s->func(s->context, &zero, scanline_pad); 451 | } 452 | } 453 | 454 | static int stbiw__outfile(stbi__write_context *s, int rgb_dir, int vdir, int x, int y, int comp, int expand_mono, void *data, int alpha, int pad, const char *fmt, ...) 455 | { 456 | if (y < 0 || x < 0) { 457 | return 0; 458 | } else { 459 | va_list v; 460 | va_start(v, fmt); 461 | stbiw__writefv(s, fmt, v); 462 | va_end(v); 463 | stbiw__write_pixels(s,rgb_dir,vdir,x,y,comp,data,alpha,pad, expand_mono); 464 | return 1; 465 | } 466 | } 467 | 468 | static int stbi_write_bmp_core(stbi__write_context *s, int x, int y, int comp, const void *data) 469 | { 470 | int pad = (-x*3) & 3; 471 | return stbiw__outfile(s,-1,-1,x,y,comp,1,(void *) data,0,pad, 472 | "11 4 22 4" "4 44 22 444444", 473 | 'B', 'M', 14+40+(x*3+pad)*y, 0,0, 14+40, // file header 474 | 40, x,y, 1,24, 0,0,0,0,0,0); // bitmap header 475 | } 476 | 477 | STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) 478 | { 479 | stbi__write_context s; 480 | stbi__start_write_callbacks(&s, func, context); 481 | return stbi_write_bmp_core(&s, x, y, comp, data); 482 | } 483 | 484 | #ifndef STBI_WRITE_NO_STDIO 485 | STBIWDEF int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *data) 486 | { 487 | stbi__write_context s; 488 | if (stbi__start_write_file(&s,filename)) { 489 | int r = stbi_write_bmp_core(&s, x, y, comp, data); 490 | stbi__end_write_file(&s); 491 | return r; 492 | } else 493 | return 0; 494 | } 495 | #endif //!STBI_WRITE_NO_STDIO 496 | 497 | static int stbi_write_tga_core(stbi__write_context *s, int x, int y, int comp, void *data) 498 | { 499 | int has_alpha = (comp == 2 || comp == 4); 500 | int colorbytes = has_alpha ? comp-1 : comp; 501 | int format = colorbytes < 2 ? 3 : 2; // 3 color channels (RGB/RGBA) = 2, 1 color channel (Y/YA) = 3 502 | 503 | if (y < 0 || x < 0) 504 | return 0; 505 | 506 | if (!stbi_write_tga_with_rle) { 507 | return stbiw__outfile(s, -1, -1, x, y, comp, 0, (void *) data, has_alpha, 0, 508 | "111 221 2222 11", 0, 0, format, 0, 0, 0, 0, 0, x, y, (colorbytes + has_alpha) * 8, has_alpha * 8); 509 | } else { 510 | int i,j,k; 511 | int jend, jdir; 512 | 513 | stbiw__writef(s, "111 221 2222 11", 0,0,format+8, 0,0,0, 0,0,x,y, (colorbytes + has_alpha) * 8, has_alpha * 8); 514 | 515 | if (stbi__flip_vertically_on_write) { 516 | j = 0; 517 | jend = y; 518 | jdir = 1; 519 | } else { 520 | j = y-1; 521 | jend = -1; 522 | jdir = -1; 523 | } 524 | for (; j != jend; j += jdir) { 525 | unsigned char *row = (unsigned char *) data + j * x * comp; 526 | int len; 527 | 528 | for (i = 0; i < x; i += len) { 529 | unsigned char *begin = row + i * comp; 530 | int diff = 1; 531 | len = 1; 532 | 533 | if (i < x - 1) { 534 | ++len; 535 | diff = memcmp(begin, row + (i + 1) * comp, comp); 536 | if (diff) { 537 | const unsigned char *prev = begin; 538 | for (k = i + 2; k < x && len < 128; ++k) { 539 | if (memcmp(prev, row + k * comp, comp)) { 540 | prev += comp; 541 | ++len; 542 | } else { 543 | --len; 544 | break; 545 | } 546 | } 547 | } else { 548 | for (k = i + 2; k < x && len < 128; ++k) { 549 | if (!memcmp(begin, row + k * comp, comp)) { 550 | ++len; 551 | } else { 552 | break; 553 | } 554 | } 555 | } 556 | } 557 | 558 | if (diff) { 559 | unsigned char header = STBIW_UCHAR(len - 1); 560 | s->func(s->context, &header, 1); 561 | for (k = 0; k < len; ++k) { 562 | stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); 563 | } 564 | } else { 565 | unsigned char header = STBIW_UCHAR(len - 129); 566 | s->func(s->context, &header, 1); 567 | stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin); 568 | } 569 | } 570 | } 571 | } 572 | return 1; 573 | } 574 | 575 | STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) 576 | { 577 | stbi__write_context s; 578 | stbi__start_write_callbacks(&s, func, context); 579 | return stbi_write_tga_core(&s, x, y, comp, (void *) data); 580 | } 581 | 582 | #ifndef STBI_WRITE_NO_STDIO 583 | STBIWDEF int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data) 584 | { 585 | stbi__write_context s; 586 | if (stbi__start_write_file(&s,filename)) { 587 | int r = stbi_write_tga_core(&s, x, y, comp, (void *) data); 588 | stbi__end_write_file(&s); 589 | return r; 590 | } else 591 | return 0; 592 | } 593 | #endif 594 | 595 | // ************************************************************************************************* 596 | // Radiance RGBE HDR writer 597 | // by Baldur Karlsson 598 | 599 | #define stbiw__max(a, b) ((a) > (b) ? (a) : (b)) 600 | 601 | static void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear) 602 | { 603 | int exponent; 604 | float maxcomp = stbiw__max(linear[0], stbiw__max(linear[1], linear[2])); 605 | 606 | if (maxcomp < 1e-32f) { 607 | rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; 608 | } else { 609 | float normalize = (float) frexp(maxcomp, &exponent) * 256.0f/maxcomp; 610 | 611 | rgbe[0] = (unsigned char)(linear[0] * normalize); 612 | rgbe[1] = (unsigned char)(linear[1] * normalize); 613 | rgbe[2] = (unsigned char)(linear[2] * normalize); 614 | rgbe[3] = (unsigned char)(exponent + 128); 615 | } 616 | } 617 | 618 | static void stbiw__write_run_data(stbi__write_context *s, int length, unsigned char databyte) 619 | { 620 | unsigned char lengthbyte = STBIW_UCHAR(length+128); 621 | STBIW_ASSERT(length+128 <= 255); 622 | s->func(s->context, &lengthbyte, 1); 623 | s->func(s->context, &databyte, 1); 624 | } 625 | 626 | static void stbiw__write_dump_data(stbi__write_context *s, int length, unsigned char *data) 627 | { 628 | unsigned char lengthbyte = STBIW_UCHAR(length); 629 | STBIW_ASSERT(length <= 128); // inconsistent with spec but consistent with official code 630 | s->func(s->context, &lengthbyte, 1); 631 | s->func(s->context, data, length); 632 | } 633 | 634 | static void stbiw__write_hdr_scanline(stbi__write_context *s, int width, int ncomp, unsigned char *scratch, float *scanline) 635 | { 636 | unsigned char scanlineheader[4] = { 2, 2, 0, 0 }; 637 | unsigned char rgbe[4]; 638 | float linear[3]; 639 | int x; 640 | 641 | scanlineheader[2] = (width&0xff00)>>8; 642 | scanlineheader[3] = (width&0x00ff); 643 | 644 | /* skip RLE for images too small or large */ 645 | if (width < 8 || width >= 32768) { 646 | for (x=0; x < width; x++) { 647 | switch (ncomp) { 648 | case 4: /* fallthrough */ 649 | case 3: linear[2] = scanline[x*ncomp + 2]; 650 | linear[1] = scanline[x*ncomp + 1]; 651 | linear[0] = scanline[x*ncomp + 0]; 652 | break; 653 | default: 654 | linear[0] = linear[1] = linear[2] = scanline[x*ncomp + 0]; 655 | break; 656 | } 657 | stbiw__linear_to_rgbe(rgbe, linear); 658 | s->func(s->context, rgbe, 4); 659 | } 660 | } else { 661 | int c,r; 662 | /* encode into scratch buffer */ 663 | for (x=0; x < width; x++) { 664 | switch(ncomp) { 665 | case 4: /* fallthrough */ 666 | case 3: linear[2] = scanline[x*ncomp + 2]; 667 | linear[1] = scanline[x*ncomp + 1]; 668 | linear[0] = scanline[x*ncomp + 0]; 669 | break; 670 | default: 671 | linear[0] = linear[1] = linear[2] = scanline[x*ncomp + 0]; 672 | break; 673 | } 674 | stbiw__linear_to_rgbe(rgbe, linear); 675 | scratch[x + width*0] = rgbe[0]; 676 | scratch[x + width*1] = rgbe[1]; 677 | scratch[x + width*2] = rgbe[2]; 678 | scratch[x + width*3] = rgbe[3]; 679 | } 680 | 681 | s->func(s->context, scanlineheader, 4); 682 | 683 | /* RLE each component separately */ 684 | for (c=0; c < 4; c++) { 685 | unsigned char *comp = &scratch[width*c]; 686 | 687 | x = 0; 688 | while (x < width) { 689 | // find first run 690 | r = x; 691 | while (r+2 < width) { 692 | if (comp[r] == comp[r+1] && comp[r] == comp[r+2]) 693 | break; 694 | ++r; 695 | } 696 | if (r+2 >= width) 697 | r = width; 698 | // dump up to first run 699 | while (x < r) { 700 | int len = r-x; 701 | if (len > 128) len = 128; 702 | stbiw__write_dump_data(s, len, &comp[x]); 703 | x += len; 704 | } 705 | // if there's a run, output it 706 | if (r+2 < width) { // same test as what we break out of in search loop, so only true if we break'd 707 | // find next byte after run 708 | while (r < width && comp[r] == comp[x]) 709 | ++r; 710 | // output run up to r 711 | while (x < r) { 712 | int len = r-x; 713 | if (len > 127) len = 127; 714 | stbiw__write_run_data(s, len, comp[x]); 715 | x += len; 716 | } 717 | } 718 | } 719 | } 720 | } 721 | } 722 | 723 | static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, float *data) 724 | { 725 | if (y <= 0 || x <= 0 || data == NULL) 726 | return 0; 727 | else { 728 | // Each component is stored separately. Allocate scratch space for full output scanline. 729 | unsigned char *scratch = (unsigned char *) STBIW_MALLOC(x*4); 730 | int i, len; 731 | char buffer[128]; 732 | char header[] = "#?RADIANCE\n# Written by stb_image_write.h\nFORMAT=32-bit_rle_rgbe\n"; 733 | s->func(s->context, header, sizeof(header)-1); 734 | 735 | #ifdef __STDC_WANT_SECURE_LIB__ 736 | len = sprintf_s(buffer, sizeof(buffer), "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); 737 | #else 738 | len = sprintf(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); 739 | #endif 740 | s->func(s->context, buffer, len); 741 | 742 | for(i=0; i < y; i++) 743 | stbiw__write_hdr_scanline(s, x, comp, scratch, data + comp*x*(stbi__flip_vertically_on_write ? y-1-i : i)); 744 | STBIW_FREE(scratch); 745 | return 1; 746 | } 747 | } 748 | 749 | STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const float *data) 750 | { 751 | stbi__write_context s; 752 | stbi__start_write_callbacks(&s, func, context); 753 | return stbi_write_hdr_core(&s, x, y, comp, (float *) data); 754 | } 755 | 756 | #ifndef STBI_WRITE_NO_STDIO 757 | STBIWDEF int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *data) 758 | { 759 | stbi__write_context s; 760 | if (stbi__start_write_file(&s,filename)) { 761 | int r = stbi_write_hdr_core(&s, x, y, comp, (float *) data); 762 | stbi__end_write_file(&s); 763 | return r; 764 | } else 765 | return 0; 766 | } 767 | #endif // STBI_WRITE_NO_STDIO 768 | 769 | 770 | ////////////////////////////////////////////////////////////////////////////// 771 | // 772 | // PNG writer 773 | // 774 | 775 | #ifndef STBIW_ZLIB_COMPRESS 776 | // stretchy buffer; stbiw__sbpush() == vector<>::push_back() -- stbiw__sbcount() == vector<>::size() 777 | #define stbiw__sbraw(a) ((int *) (void *) (a) - 2) 778 | #define stbiw__sbm(a) stbiw__sbraw(a)[0] 779 | #define stbiw__sbn(a) stbiw__sbraw(a)[1] 780 | 781 | #define stbiw__sbneedgrow(a,n) ((a)==0 || stbiw__sbn(a)+n >= stbiw__sbm(a)) 782 | #define stbiw__sbmaybegrow(a,n) (stbiw__sbneedgrow(a,(n)) ? stbiw__sbgrow(a,n) : 0) 783 | #define stbiw__sbgrow(a,n) stbiw__sbgrowf((void **) &(a), (n), sizeof(*(a))) 784 | 785 | #define stbiw__sbpush(a, v) (stbiw__sbmaybegrow(a,1), (a)[stbiw__sbn(a)++] = (v)) 786 | #define stbiw__sbcount(a) ((a) ? stbiw__sbn(a) : 0) 787 | #define stbiw__sbfree(a) ((a) ? STBIW_FREE(stbiw__sbraw(a)),0 : 0) 788 | 789 | static void *stbiw__sbgrowf(void **arr, int increment, int itemsize) 790 | { 791 | int m = *arr ? 2*stbiw__sbm(*arr)+increment : increment+1; 792 | void *p = STBIW_REALLOC_SIZED(*arr ? stbiw__sbraw(*arr) : 0, *arr ? (stbiw__sbm(*arr)*itemsize + sizeof(int)*2) : 0, itemsize * m + sizeof(int)*2); 793 | STBIW_ASSERT(p); 794 | if (p) { 795 | if (!*arr) ((int *) p)[1] = 0; 796 | *arr = (void *) ((int *) p + 2); 797 | stbiw__sbm(*arr) = m; 798 | } 799 | return *arr; 800 | } 801 | 802 | static unsigned char *stbiw__zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount) 803 | { 804 | while (*bitcount >= 8) { 805 | stbiw__sbpush(data, STBIW_UCHAR(*bitbuffer)); 806 | *bitbuffer >>= 8; 807 | *bitcount -= 8; 808 | } 809 | return data; 810 | } 811 | 812 | static int stbiw__zlib_bitrev(int code, int codebits) 813 | { 814 | int res=0; 815 | while (codebits--) { 816 | res = (res << 1) | (code & 1); 817 | code >>= 1; 818 | } 819 | return res; 820 | } 821 | 822 | static unsigned int stbiw__zlib_countm(unsigned char *a, unsigned char *b, int limit) 823 | { 824 | int i; 825 | for (i=0; i < limit && i < 258; ++i) 826 | if (a[i] != b[i]) break; 827 | return i; 828 | } 829 | 830 | static unsigned int stbiw__zhash(unsigned char *data) 831 | { 832 | stbiw_uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); 833 | hash ^= hash << 3; 834 | hash += hash >> 5; 835 | hash ^= hash << 4; 836 | hash += hash >> 17; 837 | hash ^= hash << 25; 838 | hash += hash >> 6; 839 | return hash; 840 | } 841 | 842 | #define stbiw__zlib_flush() (out = stbiw__zlib_flushf(out, &bitbuf, &bitcount)) 843 | #define stbiw__zlib_add(code,codebits) \ 844 | (bitbuf |= (code) << bitcount, bitcount += (codebits), stbiw__zlib_flush()) 845 | #define stbiw__zlib_huffa(b,c) stbiw__zlib_add(stbiw__zlib_bitrev(b,c),c) 846 | // default huffman tables 847 | #define stbiw__zlib_huff1(n) stbiw__zlib_huffa(0x30 + (n), 8) 848 | #define stbiw__zlib_huff2(n) stbiw__zlib_huffa(0x190 + (n)-144, 9) 849 | #define stbiw__zlib_huff3(n) stbiw__zlib_huffa(0 + (n)-256,7) 850 | #define stbiw__zlib_huff4(n) stbiw__zlib_huffa(0xc0 + (n)-280,8) 851 | #define stbiw__zlib_huff(n) ((n) <= 143 ? stbiw__zlib_huff1(n) : (n) <= 255 ? stbiw__zlib_huff2(n) : (n) <= 279 ? stbiw__zlib_huff3(n) : stbiw__zlib_huff4(n)) 852 | #define stbiw__zlib_huffb(n) ((n) <= 143 ? stbiw__zlib_huff1(n) : stbiw__zlib_huff2(n)) 853 | 854 | #define stbiw__ZHASH 16384 855 | 856 | #endif // STBIW_ZLIB_COMPRESS 857 | 858 | STBIWDEF unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality) 859 | { 860 | #ifdef STBIW_ZLIB_COMPRESS 861 | // user provided a zlib compress implementation, use that 862 | return STBIW_ZLIB_COMPRESS(data, data_len, out_len, quality); 863 | #else // use builtin 864 | static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 }; 865 | static unsigned char lengtheb[]= { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; 866 | static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 }; 867 | static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 }; 868 | unsigned int bitbuf=0; 869 | int i,j, bitcount=0; 870 | unsigned char *out = NULL; 871 | unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(stbiw__ZHASH * sizeof(unsigned char**)); 872 | if (hash_table == NULL) 873 | return NULL; 874 | if (quality < 5) quality = 5; 875 | 876 | stbiw__sbpush(out, 0x78); // DEFLATE 32K window 877 | stbiw__sbpush(out, 0x5e); // FLEVEL = 1 878 | stbiw__zlib_add(1,1); // BFINAL = 1 879 | stbiw__zlib_add(1,2); // BTYPE = 1 -- fixed huffman 880 | 881 | for (i=0; i < stbiw__ZHASH; ++i) 882 | hash_table[i] = NULL; 883 | 884 | i=0; 885 | while (i < data_len-3) { 886 | // hash next 3 bytes of data to be compressed 887 | int h = stbiw__zhash(data+i)&(stbiw__ZHASH-1), best=3; 888 | unsigned char *bestloc = 0; 889 | unsigned char **hlist = hash_table[h]; 890 | int n = stbiw__sbcount(hlist); 891 | for (j=0; j < n; ++j) { 892 | if (hlist[j]-data > i-32768) { // if entry lies within window 893 | int d = stbiw__zlib_countm(hlist[j], data+i, data_len-i); 894 | if (d >= best) { best=d; bestloc=hlist[j]; } 895 | } 896 | } 897 | // when hash table entry is too long, delete half the entries 898 | if (hash_table[h] && stbiw__sbn(hash_table[h]) == 2*quality) { 899 | STBIW_MEMMOVE(hash_table[h], hash_table[h]+quality, sizeof(hash_table[h][0])*quality); 900 | stbiw__sbn(hash_table[h]) = quality; 901 | } 902 | stbiw__sbpush(hash_table[h],data+i); 903 | 904 | if (bestloc) { 905 | // "lazy matching" - check match at *next* byte, and if it's better, do cur byte as literal 906 | h = stbiw__zhash(data+i+1)&(stbiw__ZHASH-1); 907 | hlist = hash_table[h]; 908 | n = stbiw__sbcount(hlist); 909 | for (j=0; j < n; ++j) { 910 | if (hlist[j]-data > i-32767) { 911 | int e = stbiw__zlib_countm(hlist[j], data+i+1, data_len-i-1); 912 | if (e > best) { // if next match is better, bail on current match 913 | bestloc = NULL; 914 | break; 915 | } 916 | } 917 | } 918 | } 919 | 920 | if (bestloc) { 921 | int d = (int) (data+i - bestloc); // distance back 922 | STBIW_ASSERT(d <= 32767 && best <= 258); 923 | for (j=0; best > lengthc[j+1]-1; ++j); 924 | stbiw__zlib_huff(j+257); 925 | if (lengtheb[j]) stbiw__zlib_add(best - lengthc[j], lengtheb[j]); 926 | for (j=0; d > distc[j+1]-1; ++j); 927 | stbiw__zlib_add(stbiw__zlib_bitrev(j,5),5); 928 | if (disteb[j]) stbiw__zlib_add(d - distc[j], disteb[j]); 929 | i += best; 930 | } else { 931 | stbiw__zlib_huffb(data[i]); 932 | ++i; 933 | } 934 | } 935 | // write out final bytes 936 | for (;i < data_len; ++i) 937 | stbiw__zlib_huffb(data[i]); 938 | stbiw__zlib_huff(256); // end of block 939 | // pad with 0 bits to byte boundary 940 | while (bitcount) 941 | stbiw__zlib_add(0,1); 942 | 943 | for (i=0; i < stbiw__ZHASH; ++i) 944 | (void) stbiw__sbfree(hash_table[i]); 945 | STBIW_FREE(hash_table); 946 | 947 | { 948 | // compute adler32 on input 949 | unsigned int s1=1, s2=0; 950 | int blocklen = (int) (data_len % 5552); 951 | j=0; 952 | while (j < data_len) { 953 | for (i=0; i < blocklen; ++i) { s1 += data[j+i]; s2 += s1; } 954 | s1 %= 65521; s2 %= 65521; 955 | j += blocklen; 956 | blocklen = 5552; 957 | } 958 | stbiw__sbpush(out, STBIW_UCHAR(s2 >> 8)); 959 | stbiw__sbpush(out, STBIW_UCHAR(s2)); 960 | stbiw__sbpush(out, STBIW_UCHAR(s1 >> 8)); 961 | stbiw__sbpush(out, STBIW_UCHAR(s1)); 962 | } 963 | *out_len = stbiw__sbn(out); 964 | // make returned pointer freeable 965 | STBIW_MEMMOVE(stbiw__sbraw(out), out, *out_len); 966 | return (unsigned char *) stbiw__sbraw(out); 967 | #endif // STBIW_ZLIB_COMPRESS 968 | } 969 | 970 | static unsigned int stbiw__crc32(unsigned char *buffer, int len) 971 | { 972 | #ifdef STBIW_CRC32 973 | return STBIW_CRC32(buffer, len); 974 | #else 975 | static unsigned int crc_table[256] = 976 | { 977 | 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 978 | 0x0eDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 979 | 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 980 | 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 981 | 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 982 | 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 983 | 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, 984 | 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 985 | 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, 986 | 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 987 | 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 988 | 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 989 | 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 990 | 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 991 | 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 992 | 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, 993 | 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 994 | 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 995 | 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 996 | 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 997 | 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 998 | 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 999 | 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 1000 | 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 1001 | 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, 1002 | 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 1003 | 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 1004 | 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 1005 | 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 1006 | 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 1007 | 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 1008 | 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D 1009 | }; 1010 | 1011 | unsigned int crc = ~0u; 1012 | int i; 1013 | for (i=0; i < len; ++i) 1014 | crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]; 1015 | return ~crc; 1016 | #endif 1017 | } 1018 | 1019 | #define stbiw__wpng4(o,a,b,c,d) ((o)[0]=STBIW_UCHAR(a),(o)[1]=STBIW_UCHAR(b),(o)[2]=STBIW_UCHAR(c),(o)[3]=STBIW_UCHAR(d),(o)+=4) 1020 | #define stbiw__wp32(data,v) stbiw__wpng4(data, (v)>>24,(v)>>16,(v)>>8,(v)); 1021 | #define stbiw__wptag(data,s) stbiw__wpng4(data, s[0],s[1],s[2],s[3]) 1022 | 1023 | static void stbiw__wpcrc(unsigned char **data, int len) 1024 | { 1025 | unsigned int crc = stbiw__crc32(*data - len - 4, len+4); 1026 | stbiw__wp32(*data, crc); 1027 | } 1028 | 1029 | static unsigned char stbiw__paeth(int a, int b, int c) 1030 | { 1031 | int p = a + b - c, pa = abs(p-a), pb = abs(p-b), pc = abs(p-c); 1032 | if (pa <= pb && pa <= pc) return STBIW_UCHAR(a); 1033 | if (pb <= pc) return STBIW_UCHAR(b); 1034 | return STBIW_UCHAR(c); 1035 | } 1036 | 1037 | // @OPTIMIZE: provide an option that always forces left-predict or paeth predict 1038 | static void stbiw__encode_png_line(unsigned char *pixels, int stride_bytes, int width, int height, int y, int n, int filter_type, signed char *line_buffer) 1039 | { 1040 | static int mapping[] = { 0,1,2,3,4 }; 1041 | static int firstmap[] = { 0,1,0,5,6 }; 1042 | int *mymap = (y != 0) ? mapping : firstmap; 1043 | int i; 1044 | int type = mymap[filter_type]; 1045 | unsigned char *z = pixels + stride_bytes * (stbi__flip_vertically_on_write ? height-1-y : y); 1046 | int signed_stride = stbi__flip_vertically_on_write ? -stride_bytes : stride_bytes; 1047 | 1048 | if (type==0) { 1049 | memcpy(line_buffer, z, width*n); 1050 | return; 1051 | } 1052 | 1053 | // first loop isn't optimized since it's just one pixel 1054 | for (i = 0; i < n; ++i) { 1055 | switch (type) { 1056 | case 1: line_buffer[i] = z[i]; break; 1057 | case 2: line_buffer[i] = z[i] - z[i-signed_stride]; break; 1058 | case 3: line_buffer[i] = z[i] - (z[i-signed_stride]>>1); break; 1059 | case 4: line_buffer[i] = (signed char) (z[i] - stbiw__paeth(0,z[i-signed_stride],0)); break; 1060 | case 5: line_buffer[i] = z[i]; break; 1061 | case 6: line_buffer[i] = z[i]; break; 1062 | } 1063 | } 1064 | switch (type) { 1065 | case 1: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-n]; break; 1066 | case 2: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-signed_stride]; break; 1067 | case 3: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - ((z[i-n] + z[i-signed_stride])>>1); break; 1068 | case 4: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], z[i-signed_stride], z[i-signed_stride-n]); break; 1069 | case 5: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - (z[i-n]>>1); break; 1070 | case 6: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], 0,0); break; 1071 | } 1072 | } 1073 | 1074 | STBIWDEF unsigned char *stbi_write_png_to_mem(const unsigned char *pixels, int stride_bytes, int x, int y, int n, int *out_len) 1075 | { 1076 | int force_filter = stbi_write_force_png_filter; 1077 | int ctype[5] = { -1, 0, 4, 2, 6 }; 1078 | unsigned char sig[8] = { 137,80,78,71,13,10,26,10 }; 1079 | unsigned char *out,*o, *filt, *zlib; 1080 | signed char *line_buffer; 1081 | int j,zlen; 1082 | 1083 | if (stride_bytes == 0) 1084 | stride_bytes = x * n; 1085 | 1086 | if (force_filter >= 5) { 1087 | force_filter = -1; 1088 | } 1089 | 1090 | filt = (unsigned char *) STBIW_MALLOC((x*n+1) * y); if (!filt) return 0; 1091 | line_buffer = (signed char *) STBIW_MALLOC(x * n); if (!line_buffer) { STBIW_FREE(filt); return 0; } 1092 | for (j=0; j < y; ++j) { 1093 | int filter_type; 1094 | if (force_filter > -1) { 1095 | filter_type = force_filter; 1096 | stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, force_filter, line_buffer); 1097 | } else { // Estimate the best filter by running through all of them: 1098 | int best_filter = 0, best_filter_val = 0x7fffffff, est, i; 1099 | for (filter_type = 0; filter_type < 5; filter_type++) { 1100 | stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, filter_type, line_buffer); 1101 | 1102 | // Estimate the entropy of the line using this filter; the less, the better. 1103 | est = 0; 1104 | for (i = 0; i < x*n; ++i) { 1105 | est += abs((signed char) line_buffer[i]); 1106 | } 1107 | if (est < best_filter_val) { 1108 | best_filter_val = est; 1109 | best_filter = filter_type; 1110 | } 1111 | } 1112 | if (filter_type != best_filter) { // If the last iteration already got us the best filter, don't redo it 1113 | stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, best_filter, line_buffer); 1114 | filter_type = best_filter; 1115 | } 1116 | } 1117 | // when we get here, filter_type contains the filter type, and line_buffer contains the data 1118 | filt[j*(x*n+1)] = (unsigned char) filter_type; 1119 | STBIW_MEMMOVE(filt+j*(x*n+1)+1, line_buffer, x*n); 1120 | } 1121 | STBIW_FREE(line_buffer); 1122 | zlib = stbi_zlib_compress(filt, y*( x*n+1), &zlen, stbi_write_png_compression_level); 1123 | STBIW_FREE(filt); 1124 | if (!zlib) return 0; 1125 | 1126 | // each tag requires 12 bytes of overhead 1127 | out = (unsigned char *) STBIW_MALLOC(8 + 12+13 + 12+zlen + 12); 1128 | if (!out) return 0; 1129 | *out_len = 8 + 12+13 + 12+zlen + 12; 1130 | 1131 | o=out; 1132 | STBIW_MEMMOVE(o,sig,8); o+= 8; 1133 | stbiw__wp32(o, 13); // header length 1134 | stbiw__wptag(o, "IHDR"); 1135 | stbiw__wp32(o, x); 1136 | stbiw__wp32(o, y); 1137 | *o++ = 8; 1138 | *o++ = STBIW_UCHAR(ctype[n]); 1139 | *o++ = 0; 1140 | *o++ = 0; 1141 | *o++ = 0; 1142 | stbiw__wpcrc(&o,13); 1143 | 1144 | stbiw__wp32(o, zlen); 1145 | stbiw__wptag(o, "IDAT"); 1146 | STBIW_MEMMOVE(o, zlib, zlen); 1147 | o += zlen; 1148 | STBIW_FREE(zlib); 1149 | stbiw__wpcrc(&o, zlen); 1150 | 1151 | stbiw__wp32(o,0); 1152 | stbiw__wptag(o, "IEND"); 1153 | stbiw__wpcrc(&o,0); 1154 | 1155 | STBIW_ASSERT(o == out + *out_len); 1156 | 1157 | return out; 1158 | } 1159 | 1160 | #ifndef STBI_WRITE_NO_STDIO 1161 | STBIWDEF int stbi_write_png(char const *filename, int x, int y, int comp, const void *data, int stride_bytes) 1162 | { 1163 | FILE *f; 1164 | int len; 1165 | unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len); 1166 | if (png == NULL) return 0; 1167 | 1168 | f = stbiw__fopen(filename, "wb"); 1169 | if (!f) { STBIW_FREE(png); return 0; } 1170 | fwrite(png, 1, len, f); 1171 | fclose(f); 1172 | STBIW_FREE(png); 1173 | return 1; 1174 | } 1175 | #endif 1176 | 1177 | STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int stride_bytes) 1178 | { 1179 | int len; 1180 | unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len); 1181 | if (png == NULL) return 0; 1182 | func(context, png, len); 1183 | STBIW_FREE(png); 1184 | return 1; 1185 | } 1186 | 1187 | 1188 | /* *************************************************************************** 1189 | * 1190 | * JPEG writer 1191 | * 1192 | * This is based on Jon Olick's jo_jpeg.cpp: 1193 | * public domain Simple, Minimalistic JPEG writer - http://www.jonolick.com/code.html 1194 | */ 1195 | 1196 | static const unsigned char stbiw__jpg_ZigZag[] = { 0,1,5,6,14,15,27,28,2,4,7,13,16,26,29,42,3,8,12,17,25,30,41,43,9,11,18, 1197 | 24,31,40,44,53,10,19,23,32,39,45,52,54,20,22,33,38,46,51,55,60,21,34,37,47,50,56,59,61,35,36,48,49,57,58,62,63 }; 1198 | 1199 | static void stbiw__jpg_writeBits(stbi__write_context *s, int *bitBufP, int *bitCntP, const unsigned short *bs) { 1200 | int bitBuf = *bitBufP, bitCnt = *bitCntP; 1201 | bitCnt += bs[1]; 1202 | bitBuf |= bs[0] << (24 - bitCnt); 1203 | while(bitCnt >= 8) { 1204 | unsigned char c = (bitBuf >> 16) & 255; 1205 | stbiw__putc(s, c); 1206 | if(c == 255) { 1207 | stbiw__putc(s, 0); 1208 | } 1209 | bitBuf <<= 8; 1210 | bitCnt -= 8; 1211 | } 1212 | *bitBufP = bitBuf; 1213 | *bitCntP = bitCnt; 1214 | } 1215 | 1216 | static void stbiw__jpg_DCT(float *d0p, float *d1p, float *d2p, float *d3p, float *d4p, float *d5p, float *d6p, float *d7p) { 1217 | float d0 = *d0p, d1 = *d1p, d2 = *d2p, d3 = *d3p, d4 = *d4p, d5 = *d5p, d6 = *d6p, d7 = *d7p; 1218 | float z1, z2, z3, z4, z5, z11, z13; 1219 | 1220 | float tmp0 = d0 + d7; 1221 | float tmp7 = d0 - d7; 1222 | float tmp1 = d1 + d6; 1223 | float tmp6 = d1 - d6; 1224 | float tmp2 = d2 + d5; 1225 | float tmp5 = d2 - d5; 1226 | float tmp3 = d3 + d4; 1227 | float tmp4 = d3 - d4; 1228 | 1229 | // Even part 1230 | float tmp10 = tmp0 + tmp3; // phase 2 1231 | float tmp13 = tmp0 - tmp3; 1232 | float tmp11 = tmp1 + tmp2; 1233 | float tmp12 = tmp1 - tmp2; 1234 | 1235 | d0 = tmp10 + tmp11; // phase 3 1236 | d4 = tmp10 - tmp11; 1237 | 1238 | z1 = (tmp12 + tmp13) * 0.707106781f; // c4 1239 | d2 = tmp13 + z1; // phase 5 1240 | d6 = tmp13 - z1; 1241 | 1242 | // Odd part 1243 | tmp10 = tmp4 + tmp5; // phase 2 1244 | tmp11 = tmp5 + tmp6; 1245 | tmp12 = tmp6 + tmp7; 1246 | 1247 | // The rotator is modified from fig 4-8 to avoid extra negations. 1248 | z5 = (tmp10 - tmp12) * 0.382683433f; // c6 1249 | z2 = tmp10 * 0.541196100f + z5; // c2-c6 1250 | z4 = tmp12 * 1.306562965f + z5; // c2+c6 1251 | z3 = tmp11 * 0.707106781f; // c4 1252 | 1253 | z11 = tmp7 + z3; // phase 5 1254 | z13 = tmp7 - z3; 1255 | 1256 | *d5p = z13 + z2; // phase 6 1257 | *d3p = z13 - z2; 1258 | *d1p = z11 + z4; 1259 | *d7p = z11 - z4; 1260 | 1261 | *d0p = d0; *d2p = d2; *d4p = d4; *d6p = d6; 1262 | } 1263 | 1264 | static void stbiw__jpg_calcBits(int val, unsigned short bits[2]) { 1265 | int tmp1 = val < 0 ? -val : val; 1266 | val = val < 0 ? val-1 : val; 1267 | bits[1] = 1; 1268 | while(tmp1 >>= 1) { 1269 | ++bits[1]; 1270 | } 1271 | bits[0] = val & ((1<0)&&(DU[end0pos]==0); --end0pos) { 1314 | } 1315 | // end0pos = first element in reverse order !=0 1316 | if(end0pos == 0) { 1317 | stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); 1318 | return DU[0]; 1319 | } 1320 | for(i = 1; i <= end0pos; ++i) { 1321 | int startpos = i; 1322 | int nrzeroes; 1323 | unsigned short bits[2]; 1324 | for (; DU[i]==0 && i<=end0pos; ++i) { 1325 | } 1326 | nrzeroes = i-startpos; 1327 | if ( nrzeroes >= 16 ) { 1328 | int lng = nrzeroes>>4; 1329 | int nrmarker; 1330 | for (nrmarker=1; nrmarker <= lng; ++nrmarker) 1331 | stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes); 1332 | nrzeroes &= 15; 1333 | } 1334 | stbiw__jpg_calcBits(DU[i], bits); 1335 | stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes<<4)+bits[1]]); 1336 | stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits); 1337 | } 1338 | if(end0pos != 63) { 1339 | stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); 1340 | } 1341 | return DU[0]; 1342 | } 1343 | 1344 | static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, int comp, const void* data, int quality) { 1345 | // Constants that don't pollute global namespace 1346 | static const unsigned char std_dc_luminance_nrcodes[] = {0,0,1,5,1,1,1,1,1,1,0,0,0,0,0,0,0}; 1347 | static const unsigned char std_dc_luminance_values[] = {0,1,2,3,4,5,6,7,8,9,10,11}; 1348 | static const unsigned char std_ac_luminance_nrcodes[] = {0,0,2,1,3,3,2,4,3,5,5,4,4,0,0,1,0x7d}; 1349 | static const unsigned char std_ac_luminance_values[] = { 1350 | 0x01,0x02,0x03,0x00,0x04,0x11,0x05,0x12,0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07,0x22,0x71,0x14,0x32,0x81,0x91,0xa1,0x08, 1351 | 0x23,0x42,0xb1,0xc1,0x15,0x52,0xd1,0xf0,0x24,0x33,0x62,0x72,0x82,0x09,0x0a,0x16,0x17,0x18,0x19,0x1a,0x25,0x26,0x27,0x28, 1352 | 0x29,0x2a,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58,0x59, 1353 | 0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x83,0x84,0x85,0x86,0x87,0x88,0x89, 1354 | 0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,0xb5,0xb6, 1355 | 0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xe1,0xe2, 1356 | 0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa 1357 | }; 1358 | static const unsigned char std_dc_chrominance_nrcodes[] = {0,0,3,1,1,1,1,1,1,1,1,1,0,0,0,0,0}; 1359 | static const unsigned char std_dc_chrominance_values[] = {0,1,2,3,4,5,6,7,8,9,10,11}; 1360 | static const unsigned char std_ac_chrominance_nrcodes[] = {0,0,2,1,2,4,4,3,4,7,5,4,4,0,1,2,0x77}; 1361 | static const unsigned char std_ac_chrominance_values[] = { 1362 | 0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21,0x31,0x06,0x12,0x41,0x51,0x07,0x61,0x71,0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91, 1363 | 0xa1,0xb1,0xc1,0x09,0x23,0x33,0x52,0xf0,0x15,0x62,0x72,0xd1,0x0a,0x16,0x24,0x34,0xe1,0x25,0xf1,0x17,0x18,0x19,0x1a,0x26, 1364 | 0x27,0x28,0x29,0x2a,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58, 1365 | 0x59,0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x82,0x83,0x84,0x85,0x86,0x87, 1366 | 0x88,0x89,0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4, 1367 | 0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda, 1368 | 0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa 1369 | }; 1370 | // Huffman tables 1371 | static const unsigned short YDC_HT[256][2] = { {0,2},{2,3},{3,3},{4,3},{5,3},{6,3},{14,4},{30,5},{62,6},{126,7},{254,8},{510,9}}; 1372 | static const unsigned short UVDC_HT[256][2] = { {0,2},{1,2},{2,2},{6,3},{14,4},{30,5},{62,6},{126,7},{254,8},{510,9},{1022,10},{2046,11}}; 1373 | static const unsigned short YAC_HT[256][2] = { 1374 | {10,4},{0,2},{1,2},{4,3},{11,4},{26,5},{120,7},{248,8},{1014,10},{65410,16},{65411,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1375 | {12,4},{27,5},{121,7},{502,9},{2038,11},{65412,16},{65413,16},{65414,16},{65415,16},{65416,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1376 | {28,5},{249,8},{1015,10},{4084,12},{65417,16},{65418,16},{65419,16},{65420,16},{65421,16},{65422,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1377 | {58,6},{503,9},{4085,12},{65423,16},{65424,16},{65425,16},{65426,16},{65427,16},{65428,16},{65429,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1378 | {59,6},{1016,10},{65430,16},{65431,16},{65432,16},{65433,16},{65434,16},{65435,16},{65436,16},{65437,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1379 | {122,7},{2039,11},{65438,16},{65439,16},{65440,16},{65441,16},{65442,16},{65443,16},{65444,16},{65445,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1380 | {123,7},{4086,12},{65446,16},{65447,16},{65448,16},{65449,16},{65450,16},{65451,16},{65452,16},{65453,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1381 | {250,8},{4087,12},{65454,16},{65455,16},{65456,16},{65457,16},{65458,16},{65459,16},{65460,16},{65461,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1382 | {504,9},{32704,15},{65462,16},{65463,16},{65464,16},{65465,16},{65466,16},{65467,16},{65468,16},{65469,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1383 | {505,9},{65470,16},{65471,16},{65472,16},{65473,16},{65474,16},{65475,16},{65476,16},{65477,16},{65478,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1384 | {506,9},{65479,16},{65480,16},{65481,16},{65482,16},{65483,16},{65484,16},{65485,16},{65486,16},{65487,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1385 | {1017,10},{65488,16},{65489,16},{65490,16},{65491,16},{65492,16},{65493,16},{65494,16},{65495,16},{65496,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1386 | {1018,10},{65497,16},{65498,16},{65499,16},{65500,16},{65501,16},{65502,16},{65503,16},{65504,16},{65505,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1387 | {2040,11},{65506,16},{65507,16},{65508,16},{65509,16},{65510,16},{65511,16},{65512,16},{65513,16},{65514,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1388 | {65515,16},{65516,16},{65517,16},{65518,16},{65519,16},{65520,16},{65521,16},{65522,16},{65523,16},{65524,16},{0,0},{0,0},{0,0},{0,0},{0,0}, 1389 | {2041,11},{65525,16},{65526,16},{65527,16},{65528,16},{65529,16},{65530,16},{65531,16},{65532,16},{65533,16},{65534,16},{0,0},{0,0},{0,0},{0,0},{0,0} 1390 | }; 1391 | static const unsigned short UVAC_HT[256][2] = { 1392 | {0,2},{1,2},{4,3},{10,4},{24,5},{25,5},{56,6},{120,7},{500,9},{1014,10},{4084,12},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1393 | {11,4},{57,6},{246,8},{501,9},{2038,11},{4085,12},{65416,16},{65417,16},{65418,16},{65419,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1394 | {26,5},{247,8},{1015,10},{4086,12},{32706,15},{65420,16},{65421,16},{65422,16},{65423,16},{65424,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1395 | {27,5},{248,8},{1016,10},{4087,12},{65425,16},{65426,16},{65427,16},{65428,16},{65429,16},{65430,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1396 | {58,6},{502,9},{65431,16},{65432,16},{65433,16},{65434,16},{65435,16},{65436,16},{65437,16},{65438,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1397 | {59,6},{1017,10},{65439,16},{65440,16},{65441,16},{65442,16},{65443,16},{65444,16},{65445,16},{65446,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1398 | {121,7},{2039,11},{65447,16},{65448,16},{65449,16},{65450,16},{65451,16},{65452,16},{65453,16},{65454,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1399 | {122,7},{2040,11},{65455,16},{65456,16},{65457,16},{65458,16},{65459,16},{65460,16},{65461,16},{65462,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1400 | {249,8},{65463,16},{65464,16},{65465,16},{65466,16},{65467,16},{65468,16},{65469,16},{65470,16},{65471,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1401 | {503,9},{65472,16},{65473,16},{65474,16},{65475,16},{65476,16},{65477,16},{65478,16},{65479,16},{65480,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1402 | {504,9},{65481,16},{65482,16},{65483,16},{65484,16},{65485,16},{65486,16},{65487,16},{65488,16},{65489,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1403 | {505,9},{65490,16},{65491,16},{65492,16},{65493,16},{65494,16},{65495,16},{65496,16},{65497,16},{65498,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1404 | {506,9},{65499,16},{65500,16},{65501,16},{65502,16},{65503,16},{65504,16},{65505,16},{65506,16},{65507,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1405 | {2041,11},{65508,16},{65509,16},{65510,16},{65511,16},{65512,16},{65513,16},{65514,16},{65515,16},{65516,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, 1406 | {16352,14},{65517,16},{65518,16},{65519,16},{65520,16},{65521,16},{65522,16},{65523,16},{65524,16},{65525,16},{0,0},{0,0},{0,0},{0,0},{0,0}, 1407 | {1018,10},{32707,15},{65526,16},{65527,16},{65528,16},{65529,16},{65530,16},{65531,16},{65532,16},{65533,16},{65534,16},{0,0},{0,0},{0,0},{0,0},{0,0} 1408 | }; 1409 | static const int YQT[] = {16,11,10,16,24,40,51,61,12,12,14,19,26,58,60,55,14,13,16,24,40,57,69,56,14,17,22,29,51,87,80,62,18,22, 1410 | 37,56,68,109,103,77,24,35,55,64,81,104,113,92,49,64,78,87,103,121,120,101,72,92,95,98,112,100,103,99}; 1411 | static const int UVQT[] = {17,18,24,47,99,99,99,99,18,21,26,66,99,99,99,99,24,26,56,99,99,99,99,99,47,66,99,99,99,99,99,99, 1412 | 99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99}; 1413 | static const float aasf[] = { 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, 1414 | 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f }; 1415 | 1416 | int row, col, i, k, subsample; 1417 | float fdtbl_Y[64], fdtbl_UV[64]; 1418 | unsigned char YTable[64], UVTable[64]; 1419 | 1420 | if(!data || !width || !height || comp > 4 || comp < 1) { 1421 | return 0; 1422 | } 1423 | 1424 | quality = quality ? quality : 90; 1425 | subsample = quality <= 90 ? 1 : 0; 1426 | quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; 1427 | quality = quality < 50 ? 5000 / quality : 200 - quality * 2; 1428 | 1429 | for(i = 0; i < 64; ++i) { 1430 | int uvti, yti = (YQT[i]*quality+50)/100; 1431 | YTable[stbiw__jpg_ZigZag[i]] = (unsigned char) (yti < 1 ? 1 : yti > 255 ? 255 : yti); 1432 | uvti = (UVQT[i]*quality+50)/100; 1433 | UVTable[stbiw__jpg_ZigZag[i]] = (unsigned char) (uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); 1434 | } 1435 | 1436 | for(row = 0, k = 0; row < 8; ++row) { 1437 | for(col = 0; col < 8; ++col, ++k) { 1438 | fdtbl_Y[k] = 1 / (YTable [stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); 1439 | fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); 1440 | } 1441 | } 1442 | 1443 | // Write Headers 1444 | { 1445 | static const unsigned char head0[] = { 0xFF,0xD8,0xFF,0xE0,0,0x10,'J','F','I','F',0,1,1,0,0,1,0,1,0,0,0xFF,0xDB,0,0x84,0 }; 1446 | static const unsigned char head2[] = { 0xFF,0xDA,0,0xC,3,1,0,2,0x11,3,0x11,0,0x3F,0 }; 1447 | const unsigned char head1[] = { 0xFF,0xC0,0,0x11,8,(unsigned char)(height>>8),STBIW_UCHAR(height),(unsigned char)(width>>8),STBIW_UCHAR(width), 1448 | 3,1,(unsigned char)(subsample?0x22:0x11),0,2,0x11,1,3,0x11,1,0xFF,0xC4,0x01,0xA2,0 }; 1449 | s->func(s->context, (void*)head0, sizeof(head0)); 1450 | s->func(s->context, (void*)YTable, sizeof(YTable)); 1451 | stbiw__putc(s, 1); 1452 | s->func(s->context, UVTable, sizeof(UVTable)); 1453 | s->func(s->context, (void*)head1, sizeof(head1)); 1454 | s->func(s->context, (void*)(std_dc_luminance_nrcodes+1), sizeof(std_dc_luminance_nrcodes)-1); 1455 | s->func(s->context, (void*)std_dc_luminance_values, sizeof(std_dc_luminance_values)); 1456 | stbiw__putc(s, 0x10); // HTYACinfo 1457 | s->func(s->context, (void*)(std_ac_luminance_nrcodes+1), sizeof(std_ac_luminance_nrcodes)-1); 1458 | s->func(s->context, (void*)std_ac_luminance_values, sizeof(std_ac_luminance_values)); 1459 | stbiw__putc(s, 1); // HTUDCinfo 1460 | s->func(s->context, (void*)(std_dc_chrominance_nrcodes+1), sizeof(std_dc_chrominance_nrcodes)-1); 1461 | s->func(s->context, (void*)std_dc_chrominance_values, sizeof(std_dc_chrominance_values)); 1462 | stbiw__putc(s, 0x11); // HTUACinfo 1463 | s->func(s->context, (void*)(std_ac_chrominance_nrcodes+1), sizeof(std_ac_chrominance_nrcodes)-1); 1464 | s->func(s->context, (void*)std_ac_chrominance_values, sizeof(std_ac_chrominance_values)); 1465 | s->func(s->context, (void*)head2, sizeof(head2)); 1466 | } 1467 | 1468 | // Encode 8x8 macroblocks 1469 | { 1470 | static const unsigned short fillBits[] = {0x7F, 7}; 1471 | int DCY=0, DCU=0, DCV=0; 1472 | int bitBuf=0, bitCnt=0; 1473 | // comp == 2 is grey+alpha (alpha is ignored) 1474 | int ofsG = comp > 2 ? 1 : 0, ofsB = comp > 2 ? 2 : 0; 1475 | const unsigned char *dataR = (const unsigned char *)data; 1476 | const unsigned char *dataG = dataR + ofsG; 1477 | const unsigned char *dataB = dataR + ofsB; 1478 | int x, y, pos; 1479 | if(subsample) { 1480 | for(y = 0; y < height; y += 16) { 1481 | for(x = 0; x < width; x += 16) { 1482 | float Y[256], U[256], V[256]; 1483 | for(row = y, pos = 0; row < y+16; ++row) { 1484 | // row >= height => use last input row 1485 | int clamped_row = (row < height) ? row : height - 1; 1486 | int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp; 1487 | for(col = x; col < x+16; ++col, ++pos) { 1488 | // if col >= width => use pixel from last input column 1489 | int p = base_p + ((col < width) ? col : (width-1))*comp; 1490 | float r = dataR[p], g = dataG[p], b = dataB[p]; 1491 | Y[pos]= +0.29900f*r + 0.58700f*g + 0.11400f*b - 128; 1492 | U[pos]= -0.16874f*r - 0.33126f*g + 0.50000f*b; 1493 | V[pos]= +0.50000f*r - 0.41869f*g - 0.08131f*b; 1494 | } 1495 | } 1496 | DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+0, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); 1497 | DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+8, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); 1498 | DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+128, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); 1499 | DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+136, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); 1500 | 1501 | // subsample U,V 1502 | { 1503 | float subU[64], subV[64]; 1504 | int yy, xx; 1505 | for(yy = 0, pos = 0; yy < 8; ++yy) { 1506 | for(xx = 0; xx < 8; ++xx, ++pos) { 1507 | int j = yy*32+xx*2; 1508 | subU[pos] = (U[j+0] + U[j+1] + U[j+16] + U[j+17]) * 0.25f; 1509 | subV[pos] = (V[j+0] + V[j+1] + V[j+16] + V[j+17]) * 0.25f; 1510 | } 1511 | } 1512 | DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subU, 8, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); 1513 | DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subV, 8, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); 1514 | } 1515 | } 1516 | } 1517 | } else { 1518 | for(y = 0; y < height; y += 8) { 1519 | for(x = 0; x < width; x += 8) { 1520 | float Y[64], U[64], V[64]; 1521 | for(row = y, pos = 0; row < y+8; ++row) { 1522 | // row >= height => use last input row 1523 | int clamped_row = (row < height) ? row : height - 1; 1524 | int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp; 1525 | for(col = x; col < x+8; ++col, ++pos) { 1526 | // if col >= width => use pixel from last input column 1527 | int p = base_p + ((col < width) ? col : (width-1))*comp; 1528 | float r = dataR[p], g = dataG[p], b = dataB[p]; 1529 | Y[pos]= +0.29900f*r + 0.58700f*g + 0.11400f*b - 128; 1530 | U[pos]= -0.16874f*r - 0.33126f*g + 0.50000f*b; 1531 | V[pos]= +0.50000f*r - 0.41869f*g - 0.08131f*b; 1532 | } 1533 | } 1534 | 1535 | DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y, 8, fdtbl_Y, DCY, YDC_HT, YAC_HT); 1536 | DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, U, 8, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); 1537 | DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, V, 8, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); 1538 | } 1539 | } 1540 | } 1541 | 1542 | // Do the bit alignment of the EOI marker 1543 | stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits); 1544 | } 1545 | 1546 | // EOI 1547 | stbiw__putc(s, 0xFF); 1548 | stbiw__putc(s, 0xD9); 1549 | 1550 | return 1; 1551 | } 1552 | 1553 | STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality) 1554 | { 1555 | stbi__write_context s; 1556 | stbi__start_write_callbacks(&s, func, context); 1557 | return stbi_write_jpg_core(&s, x, y, comp, (void *) data, quality); 1558 | } 1559 | 1560 | 1561 | #ifndef STBI_WRITE_NO_STDIO 1562 | STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality) 1563 | { 1564 | stbi__write_context s; 1565 | if (stbi__start_write_file(&s,filename)) { 1566 | int r = stbi_write_jpg_core(&s, x, y, comp, data, quality); 1567 | stbi__end_write_file(&s); 1568 | return r; 1569 | } else 1570 | return 0; 1571 | } 1572 | #endif 1573 | 1574 | #endif // STB_IMAGE_WRITE_IMPLEMENTATION 1575 | 1576 | /* Revision history 1577 | 1.14 (2020-02-02) updated JPEG writer to downsample chroma channels 1578 | 1.13 1579 | 1.12 1580 | 1.11 (2019-08-11) 1581 | 1582 | 1.10 (2019-02-07) 1583 | support utf8 filenames in Windows; fix warnings and platform ifdefs 1584 | 1.09 (2018-02-11) 1585 | fix typo in zlib quality API, improve STB_I_W_STATIC in C++ 1586 | 1.08 (2018-01-29) 1587 | add stbi__flip_vertically_on_write, external zlib, zlib quality, choose PNG filter 1588 | 1.07 (2017-07-24) 1589 | doc fix 1590 | 1.06 (2017-07-23) 1591 | writing JPEG (using Jon Olick's code) 1592 | 1.05 ??? 1593 | 1.04 (2017-03-03) 1594 | monochrome BMP expansion 1595 | 1.03 ??? 1596 | 1.02 (2016-04-02) 1597 | avoid allocating large structures on the stack 1598 | 1.01 (2016-01-16) 1599 | STBIW_REALLOC_SIZED: support allocators with no realloc support 1600 | avoid race-condition in crc initialization 1601 | minor compile issues 1602 | 1.00 (2015-09-14) 1603 | installable file IO function 1604 | 0.99 (2015-09-13) 1605 | warning fixes; TGA rle support 1606 | 0.98 (2015-04-08) 1607 | added STBIW_MALLOC, STBIW_ASSERT etc 1608 | 0.97 (2015-01-18) 1609 | fixed HDR asserts, rewrote HDR rle logic 1610 | 0.96 (2015-01-17) 1611 | add HDR output 1612 | fix monochrome BMP 1613 | 0.95 (2014-08-17) 1614 | add monochrome TGA output 1615 | 0.94 (2014-05-31) 1616 | rename private functions to avoid conflicts with stb_image.h 1617 | 0.93 (2014-05-27) 1618 | warning fixes 1619 | 0.92 (2010-08-01) 1620 | casts to unsigned char to fix warnings 1621 | 0.91 (2010-07-17) 1622 | first public release 1623 | 0.90 first internal release 1624 | */ 1625 | 1626 | /* 1627 | ------------------------------------------------------------------------------ 1628 | This software is available under 2 licenses -- choose whichever you prefer. 1629 | ------------------------------------------------------------------------------ 1630 | ALTERNATIVE A - MIT License 1631 | Copyright (c) 2017 Sean Barrett 1632 | Permission is hereby granted, free of charge, to any person obtaining a copy of 1633 | this software and associated documentation files (the "Software"), to deal in 1634 | the Software without restriction, including without limitation the rights to 1635 | use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 1636 | of the Software, and to permit persons to whom the Software is furnished to do 1637 | so, subject to the following conditions: 1638 | The above copyright notice and this permission notice shall be included in all 1639 | copies or substantial portions of the Software. 1640 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1641 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 1642 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 1643 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 1644 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 1645 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 1646 | SOFTWARE. 1647 | ------------------------------------------------------------------------------ 1648 | ALTERNATIVE B - Public Domain (www.unlicense.org) 1649 | This is free and unencumbered software released into the public domain. 1650 | Anyone is free to copy, modify, publish, use, compile, sell, or distribute this 1651 | software, either in source code form or as a compiled binary, for any purpose, 1652 | commercial or non-commercial, and by any means. 1653 | In jurisdictions that recognize copyright laws, the author or authors of this 1654 | software dedicate any and all copyright interest in the software to the public 1655 | domain. We make this dedication for the benefit of the public at large and to 1656 | the detriment of our heirs and successors. We intend this dedication to be an 1657 | overt act of relinquishment in perpetuity of all present and future rights to 1658 | this software under copyright law. 1659 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1660 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 1661 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 1662 | AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 1663 | ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 1664 | WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 1665 | ------------------------------------------------------------------------------ 1666 | */ 1667 | -------------------------------------------------------------------------------- /supersonic.cc: -------------------------------------------------------------------------------- 1 | 2 | #define _FILE_OFFSET_BITS 64 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | 14 | #include "argparse/argparse.hpp" 15 | #include "util.h" 16 | #include "queue.h" 17 | #include "datamodel.h" 18 | #include "userdata.h" 19 | #include "fcgihelper.h" 20 | #include "resphelper.h" 21 | 22 | #define getone(m, k, def) \ 23 | ((m).find(k) == (m).end() ? def : (m).find(k)->second) 24 | 25 | 26 | struct web_req { 27 | uint64_t offset, lastbyte; 28 | std::string method, host, uri; 29 | std::unordered_multimap vars; 30 | }; 31 | 32 | static uint64_t fsize(FILE *fd) { 33 | fseeko(fd, 0, SEEK_END); 34 | uint64_t r = ftello(fd); 35 | fseeko(fd, 0, SEEK_SET); 36 | return r; 37 | } 38 | 39 | class SupersonicServer { 40 | private: 41 | // Datamodel 42 | DataModel *model; 43 | 44 | // And user data DB 45 | UserData *udata; 46 | 47 | // Thread to spawn 48 | std::thread cthread; 49 | 50 | // Shared queue 51 | ConcurrentQueue> *rq; 52 | 53 | // Search directories 54 | std::vector sdirs; 55 | 56 | // CORS origin (if any) 57 | std::string cors_origin; 58 | 59 | // Signal end of workers 60 | bool end; 61 | 62 | class stream_responder : public fcgi_responder { 63 | public: 64 | stream_responder(FILE* f, uint64_t offset = 0, uint64_t size = ~0ULL) 65 | : f(f), offset(offset), ret_size(size) { 66 | // Seek to offset 67 | fseeko(f, offset, SEEK_SET); 68 | } 69 | ~stream_responder() { if (f) fclose(f); } 70 | 71 | virtual std::string header() { 72 | if (ret_size != ~0ULL || offset > 0) 73 | return "Status: 206\r\n" 74 | "Content-Type: application/octet-stream\r\n" 75 | "Content-Range: bytes " + 76 | std::to_string(offset) + "-" + std::to_string(offset + ret_size - 1) + "/*\r\n" 77 | "Content-Length: " + std::to_string(ret_size) + "\r\n"; 78 | else 79 | return "Status: 200\r\n" 80 | "Content-Type: application/octet-stream\r\n" 81 | "Content-Length: " + std::to_string(ret_size) + "\r\n"; 82 | } 83 | 84 | virtual std::string respond() { 85 | // Send "small" chunks as response, so we can easily abort if needed. 86 | const size_t blocksize = 64*1024; 87 | size_t toread = ret_size < blocksize ? ret_size : blocksize; 88 | if (!toread) 89 | return {}; // EOF 90 | 91 | char tmpbuf[blocksize]; 92 | size_t read = fread(tmpbuf, 1, toread, f); 93 | if (read >= 0) { 94 | ret_size -= read; 95 | return std::string(tmpbuf, read); 96 | } 97 | return {}; 98 | } 99 | 100 | private: 101 | FILE* f; 102 | uint64_t offset, ret_size; 103 | }; 104 | 105 | bool checkCredentials(std::string user, web_req& req) { 106 | if (user.empty()) 107 | return false; 108 | 109 | std::string pass = getone(req.vars, "p", ""); 110 | if (!pass.empty()) { 111 | if (pass.substr(0, 4) == "enc:") 112 | pass = hexdecode(pass.substr(4)); 113 | return model->checkCredentials(user, pass); 114 | } 115 | 116 | auto saltit = req.vars.find("s"); 117 | auto toknit = req.vars.find("t"); 118 | if (saltit != req.vars.end() && toknit != req.vars.end()) 119 | return model->checkCredentialsMD5(user, toknit->second, saltit->second); 120 | return false; 121 | } 122 | 123 | str_resp* authErr(web_req & req) { 124 | RespFmt fmt(getone(req.vars, "f", ""), getone(req.vars, "callback", "")); 125 | return Entity::error(fmt, 40, "Wrong username or password").respond(); 126 | } 127 | 128 | // Returns Entities, album Name and song count 129 | std::list listSongs(RespFmt fmt, std::string node, const Album *alb) { 130 | auto songs = model->getSongsByAlbum(alb->id); 131 | std::list esongs; 132 | for (auto song: songs) 133 | esongs.push_back(Entity(fmt, node, song.getAttrs())); 134 | return esongs; 135 | } 136 | 137 | fcgi_responder* handle(web_req& req, FCGX_Request *fastcgi_req) { 138 | if (req.method != "HEAD" && req.method != "GET" && req.method != "POST") 139 | return respond_method_not_allowed(); 140 | 141 | std::string user = getone(req.vars, "u", ""); 142 | 143 | // Check for auth user and kick out intruders 144 | if (!checkCredentials(user, req)) 145 | return authErr(req); 146 | 147 | RespFmt rfmt(getone(req.vars, "f", ""), getone(req.vars, "callback", "")); 148 | std::string sreqid = getone(req.vars, "id", ""); 149 | uint64_t reqid = hexdecode64(sreqid); 150 | 151 | if (req.uri == "/rest/getMusicDirectory.view") { 152 | std::list entities; 153 | std::string tname; 154 | switch (model->classifyId(reqid)) { 155 | case TYPE_ALBUM: { 156 | Album alb = model->getAlbum(reqid); 157 | entities = listSongs(rfmt, "child", &alb); 158 | tname = alb.title; 159 | } break; 160 | case TYPE_ARTIST: { 161 | auto albums = model->getAlbumsByArtist(reqid); 162 | for (auto album: albums) { 163 | entities.push_back(Entity(rfmt, "child", { 164 | {"id", DS(album.sid()) }, 165 | {"title", DS(album.title) }, 166 | {"artist", DS(album.artist) }, 167 | {"parent", DS(album.sartistid()) }, 168 | {"isDir", DB(true) }, 169 | {"coverArt", album.hascover ? DS(album.sid()) : DN() } 170 | })); 171 | tname = album.artist; 172 | } 173 | } break; 174 | }; 175 | 176 | return Entity::wrap(Entity(rfmt, "directory", { 177 | {"id", DS(std::to_string(reqid))}, 178 | {"name", DS(tname)}}, 179 | entities)).respond(); 180 | } 181 | else if (req.uri == "/rest/getAlbumList.view" or 182 | req.uri == "/rest/getAlbumList2.view") { 183 | unsigned offset = atoi(getone(req.vars, "offset", "").c_str()); 184 | unsigned size = req.vars.count("size") ? atoi(getone(req.vars, "size", "").c_str()) : 10; 185 | 186 | std::list ealbums; 187 | auto albums = model->getAllAlbumsSorted(offset, size); 188 | for (auto album: albums) { 189 | ealbums.push_back(Entity(rfmt, "album", { 190 | {"id", DS(album.sid())}, 191 | {"title", DS(album.title)}, 192 | {"name", DS(album.title)}, 193 | {"artist", DS(album.artist)}, 194 | {"parent", DS(album.sartistid())}, 195 | {"isDir", DB(true)}, 196 | {"coverArt", album.hascover ? DS(album.sid()) : DN() } 197 | })); 198 | } 199 | 200 | std::string tag = (req.uri == "/rest/getAlbumList2.view") ? "albumList2" : "albumList"; 201 | return Entity::wrap(Entity(rfmt, tag, {}, ealbums)).respond(); 202 | } 203 | else if (req.uri == "/rest/getArtist.view") { 204 | std::list ealbums; 205 | auto albums = model->getAlbumsByArtist(reqid); 206 | for (auto album: albums) { 207 | ealbums.push_back(Entity(rfmt, "album", { 208 | {"id", DS(album.sid())}, 209 | {"name", DS(album.title)}, 210 | {"artist", DS(album.artist)}, 211 | {"artistid", DS(album.sartistid()) }, 212 | {"coverArt", album.hascover ? DS(album.sid()) : DN() } 213 | })); 214 | } 215 | 216 | return Entity::wrap(Entity(rfmt, "artist", {{"albumCount", DI(albums.size())}}, ealbums)).respond(); 217 | } 218 | 219 | else if (req.uri == "/rest/getAlbum.view") { 220 | Album alb = model->getAlbum(reqid); 221 | auto songs = listSongs(rfmt, "song", &alb); 222 | return Entity::wrap(Entity(rfmt, "album", { 223 | {"id", DS(sreqid)}, 224 | {"name", DS(alb.title)}, 225 | {"type", DS("music")}, 226 | {"songCount", DI(songs.size())}, 227 | {"coverArt", DS(sreqid)}, 228 | {"artist", DS(alb.artist)}, 229 | {"artistId", DS(alb.sartistid())}}, 230 | songs)).respond(); 231 | } 232 | 233 | else if (req.uri == "/rest/getRandomSongs.view") { 234 | unsigned size = req.vars.count("size") ? atoi(getone(req.vars, "size", "").c_str()) : 10; 235 | 236 | auto songs = model->getRandomSongs(size); 237 | std::list esongs; 238 | for (auto song: songs) 239 | esongs.push_back(Entity(rfmt, "song", song.getAttrs())); 240 | 241 | return Entity::wrap(Entity(rfmt, "randomSongs", {}, esongs)).respond(); 242 | } 243 | else if (req.uri == "/rest/getArtists.view") { 244 | std::list eartists; 245 | for (auto artist: model->getArtists()) 246 | eartists.push_back(Entity(rfmt, "artist", 247 | { {"id", DS(artist.sid())}, {"name", DS(artist.name)} })); 248 | 249 | return Entity::wrap(Entity(rfmt, "artists", { 250 | {"ignoredArticles", DS("The El La Los Las Le Les")}}, 251 | std::list{ 252 | Entity(rfmt, "index", {{"name", DS("Music")}}, eartists)})).respond(); 253 | } 254 | else if (req.uri == "/rest/getIndexes.view") { 255 | std::list eartists; 256 | for (auto artist: model->getArtists()) 257 | eartists.push_back(Entity(rfmt, "artist", 258 | { {"id", DS(artist.sid())}, {"name", DS(artist.name)} })); 259 | 260 | return Entity::wrap(Entity(rfmt, "indexes", { 261 | {"lastModified", DI(1455843830000)}, // FIXME: Unix timestamp * 1000 262 | {"ignoredArticles", DS("The El La Los Las Le Les")}}, 263 | std::list{ 264 | Entity(rfmt, "index", {{"name", DS("Music")}}, eartists)})).respond(); 265 | } 266 | else if (req.uri == "/rest/stream.view" or 267 | req.uri == "/rest/download.view") { 268 | // Lookup song_id and get a file name! 269 | std::string fname = model->getSongFile(reqid); 270 | if (!fname.empty()) { 271 | FILE *fd = NULL; 272 | if (fname[0] == '/') 273 | // Use absolute path as is 274 | fd = fopen(fname.c_str(), "rb"); 275 | else { 276 | // Try to open the file using all the search paths 277 | for (const auto & dir : sdirs) { 278 | fd = fopen((dir + "/" + fname).c_str(), "rb"); 279 | if (fd) 280 | break; 281 | } 282 | } 283 | // Stream the data to the user if found 284 | if (fd) { 285 | // Easier to count this way, prevent overflow 286 | req.lastbyte = std::max(req.lastbyte, req.lastbyte + 1); 287 | uint64_t fsz = fsize(fd); 288 | if (req.lastbyte > fsz) 289 | req.lastbyte = fsz; 290 | 291 | if (req.lastbyte > req.offset) 292 | return new stream_responder(fd, req.offset, req.lastbyte - req.offset); 293 | fclose(fd); 294 | } 295 | } 296 | } 297 | 298 | // Misc stuff, needs to be there just to make clients happy :) 299 | else if (req.uri == "/rest/getMusicFolders.view") { 300 | return Entity::wrap(Entity(rfmt, "musicFolders", {}, std::list{ 301 | Entity(rfmt, "musicFolder", { 302 | {"id", DS("1")}, 303 | {"name", DS("Music")}, 304 | })})).respond(); 305 | } 306 | else if (req.uri == "/rest/getLicense.view") { 307 | return Entity::wrap(Entity(rfmt, "license", { 308 | {"valid", DB(true)}, 309 | {"email", DS("example@example.com")}, 310 | {"key", DS("ABC123DEF")}})).respond(); 311 | } 312 | else if (req.uri == "/rest/ping.view") { 313 | return Entity::wrap(rfmt).respond(); 314 | } 315 | else if (req.uri == "/rest/getUser.view") { 316 | return Entity::wrap(Entity(rfmt, "user", { 317 | {"username", DS("admin")}, 318 | {"email", DS("admin@example.com")}, 319 | {"scrobblingEnabled", DB(true)}, 320 | {"adminRole", DB(true)}, 321 | {"settingsRole", DB(true)}, 322 | {"streamRole", DB(true)}, 323 | {"jukeboxRole", DB(false)}, 324 | {"downloadRole", DB(true)}, 325 | {"uploadRole", DB(false)}, 326 | {"playlistRole", DB(true)}, 327 | {"coverArtRole", DB(false)}, 328 | {"commentRole", DB(false)}, 329 | {"podcastRole", DB(false)}, 330 | {"shareRole", DB(false)}, 331 | {"videoConversionRole", DB(false)}, 332 | })).respond(); 333 | } 334 | else if (req.uri == "/rest/getCoverArt.view") { 335 | auto albumid = reqid; 336 | if (model->classifyId(albumid) == TYPE_SONG) { 337 | auto song = model->getSong(albumid); 338 | if (song) 339 | albumid = song->albumid; 340 | } 341 | unsigned size = atoi(getone(req.vars, "size", "").c_str()); 342 | std::string img = model->getAlbumCover(albumid, size); 343 | return new str_resp("Status: 200\r\n" 344 | "Content-Type: image/jpeg\r\n" 345 | "Content-Length: " + std::to_string(img.size()) + "\r\n", img); 346 | } 347 | // Playlist management 348 | // getPlaylists getPlaylist createPlaylist updatePlaylist deletePlaylist 349 | else if (req.uri == "/rest/getPlaylist.view") { 350 | auto pl = udata->getPlaylist(reqid); 351 | if (pl) { 352 | if (pl->upublic || pl->username == user) { 353 | std::list esongs; 354 | for (auto songid : pl->songs) { 355 | auto song = model->getSong(songid); 356 | esongs.push_back(Entity(rfmt, "entry", song->getAttrs())); 357 | } 358 | return Entity::wrap(Entity(rfmt, "playlist", { 359 | {"id", DS(std::to_string(reqid))}, 360 | {"name", DS(pl->name)}, 361 | {"comment", DS(pl->comment)}, 362 | {"owner", DS(pl->username)}, 363 | {"public", DB(pl->upublic)}, 364 | {"songCount", DI(pl->songs.size())}}, 365 | esongs)).respond(); 366 | } 367 | else 368 | return Entity::error(rfmt, 50, "Permission denied").respond(); 369 | } 370 | else 371 | return Entity::error(rfmt, 70, "Playlist not found").respond(); 372 | } 373 | else if (req.uri == "/rest/getPlaylists.view") { 374 | std::list eplaylists; 375 | for (const auto & pl : udata->getPlaylists(user)) { 376 | eplaylists.push_back(Entity::wrap(Entity(rfmt, "playlist", { 377 | {"id", DS(std::to_string(reqid))}, 378 | {"name", DS(pl.name)}, 379 | {"comment", DS(pl.comment)}, 380 | {"owner", DS(pl.username)}, 381 | {"public", DB(pl.upublic)}, 382 | {"songCount", DI(pl.songs.size())}}))); 383 | } 384 | return Entity::wrap(Entity(rfmt, "playlists", {}, eplaylists)).respond(); 385 | } 386 | 387 | // All the unsupported features, like podcasts & video calls are mocked out here. 388 | // Denies permissions to all updates and returns empty yet valid responses to all queries 389 | else if (req.uri == "/rest/getPlaylists.view") 390 | return Entity::wrap(Entity(rfmt, "playlists", {}, {})).respond(); 391 | else if (req.uri == "/rest/getGenres.view") 392 | return Entity::wrap(Entity(rfmt, "genres", {}, {})).respond(); 393 | else if (req.uri == "/rest/getPodcasts.view") 394 | return Entity::wrap(Entity(rfmt, "podcasts", {}, {})).respond(); 395 | else if (req.uri == "/rest/getNewestPodcasts.view") 396 | return Entity::wrap(Entity(rfmt, "newestPodcasts", {}, {})).respond(); 397 | else if (req.uri == "/rest/getInternetRadioStations.view") 398 | return Entity::wrap(Entity(rfmt, "internetRadioStations", {}, {})).respond(); 399 | else if (req.uri == "/rest/getShares.view") 400 | return Entity::wrap(Entity(rfmt, "shares", {}, {})).respond(); 401 | else if (req.uri == "/rest/getLyrics.view") 402 | return Entity::wrap(Entity(rfmt, "lyrics", {}, {})).respond(); 403 | else if (req.uri == "/rest/getChatMessages.view") 404 | return Entity::wrap(Entity(rfmt, "chatMessages", {}, {})).respond(); 405 | else if (req.uri == "/rest/refreshPodcasts.view" or 406 | req.uri == "/rest/createPodcastChannel.view" or 407 | req.uri == "/rest/deletePodcastChannel.view" or 408 | req.uri == "/rest/deletePodcastEpisode.view" or 409 | req.uri == "/rest/downloadPodcastEpisode.view" or 410 | req.uri == "/rest/createInternetRadioStation.view" or 411 | req.uri == "/rest/updateInternetRadioStation.view" or 412 | req.uri == "/rest/deleteInternetRadioStation.view" or 413 | req.uri == "/rest/createShare.view" or 414 | req.uri == "/rest/updateShare.view" or 415 | req.uri == "/rest/deleteShare.view" or 416 | req.uri == "/rest/addChatMessage.view" or 417 | req.uri == "/rest/createUser.view" or 418 | req.uri == "/rest/updateUser.view" or 419 | req.uri == "/rest/deleteUser.view" or 420 | req.uri == "/rest/changePassword.view" or 421 | req.uri == "/rest/jukeboxControl.view") 422 | return Entity::error(rfmt, 50, "Permission denied").respond(); 423 | else if (req.uri == "/rest/getVideos.view") 424 | return Entity::wrap(Entity(rfmt, "videos", {}, {})).respond(); 425 | 426 | return respond_not_found(); 427 | } 428 | 429 | public: 430 | SupersonicServer(DataModel *dbm, UserData *udata, 431 | ConcurrentQueue> *rq, 432 | std::vector sdirs, std::string cors_origin) 433 | : model(dbm), udata(udata), rq(rq), sdirs(sdirs), cors_origin(cors_origin) { 434 | cthread = std::thread(&SupersonicServer::work, this); 435 | } 436 | 437 | ~SupersonicServer() { 438 | cthread.join(); 439 | } 440 | 441 | // Receives requests and processes them by replying via a side http call. 442 | void work() { 443 | std::unique_ptr req; 444 | while (rq->pop(&req)) { 445 | // Get streams to write 446 | fcgi_streambuf reqout(req->out); 447 | std::iostream obuf(&reqout); 448 | 449 | // Parse inputs 450 | web_req wreq; 451 | wreq.method = FCGX_GetParam("REQUEST_METHOD", req->envp) ?: ""; 452 | wreq.uri = FCGX_GetParam("DOCUMENT_URI", req->envp) ?: ""; 453 | wreq.vars = parse_vars(FCGX_GetParam("QUERY_STRING", req->envp) ?: ""); 454 | wreq.host = FCGX_GetParam("HTTP_HOST", req->envp) ?: ""; 455 | std::tie(wreq.offset, wreq.lastbyte) = parse_range(FCGX_GetParam("HTTP_RANGE", req->envp) ?: ""); 456 | 457 | std::unique_ptr resp(this->handle(wreq, req.get())); 458 | 459 | // Respond with an immediate update JSON encoded too 460 | obuf << resp->header(); // Send header 461 | if (!cors_origin.empty()) 462 | obuf << "Access-Control-Allow-Origin: " + cors_origin + "\r\n"; 463 | obuf << "\r\n"; 464 | while (wreq.method != "HEAD") { 465 | std::string r = resp->respond(); 466 | // Stop if EOF or there was a write error (pipe broken most likely) 467 | if (r.empty() || FCGX_GetError(req->out)) 468 | break; 469 | obuf << r; 470 | } 471 | 472 | FCGX_Finish_r(req.get()); 473 | req.reset(); 474 | } 475 | } 476 | }; 477 | 478 | bool serving = true; 479 | void sighandler(int) { 480 | std::cerr << "Signal caught" << std::endl; 481 | // Just tweak a couple of vars really 482 | serving = false; 483 | // Ask for CGI lib shutdown 484 | FCGX_ShutdownPending(); 485 | // Close stdin so we stop accepting 486 | close(0); 487 | } 488 | 489 | int main(int argc, char **argv) { 490 | ArgumentParser parser; 491 | parser.addArgument("-m", "--musicdb", 1, false); 492 | parser.addArgument("-u", "--userdb", 1, true); 493 | parser.addArgument("-t", "--threads", 1, true); 494 | parser.addArgument("-d", "--search-dir", '*'); 495 | parser.addArgument("-c", "--access-control-origin", 1, true); 496 | parser.parse(argc, (const char **)argv); 497 | 498 | // Initialize the database backend. 499 | sqlite3* sqldb; 500 | if (SQLITE_OK != sqlite3_open_v2(parser.retrieve("m").c_str(), &sqldb, 501 | SQLITE_OPEN_READONLY | 502 | SQLITE_OPEN_FULLMUTEX, NULL)) { 503 | std::cerr << "Could not open sqlite3 music database!" << std::endl; 504 | return 1; 505 | } 506 | 507 | // Database to store user data, such as playlists. This is really optional. 508 | sqlite3* userdb; 509 | if (parser.count("u")) { 510 | if (SQLITE_OK != sqlite3_open_v2(parser.retrieve("u").c_str(), &userdb, 511 | SQLITE_OPEN_READWRITE | 512 | SQLITE_OPEN_CREATE | SQLITE_OPEN_FULLMUTEX, NULL)) { 513 | std::cerr << "Could not open sqlite3 user database!" << std::endl; 514 | return 1; 515 | } 516 | } else { 517 | if (SQLITE_OK != sqlite3_open_v2("userdb", &userdb, SQLITE_OPEN_READWRITE | 518 | SQLITE_OPEN_MEMORY | SQLITE_OPEN_FULLMUTEX, NULL)) { 519 | std::cerr << "Could not open a temporary (in-mem) sqlite3 user database!" << std::endl; 520 | return 1; 521 | } 522 | std::cerr << "WARNING: Using an in-memory database for user data, all data will be lost " 523 | "on restart. If you want to use persistent storage use '--userdb'" << std::endl; 524 | } 525 | UserData udata(userdb); 526 | 527 | std::string cors_origin; 528 | if (parser.count("c")) 529 | cors_origin = parser.retrieve("c"); 530 | 531 | // Use the search dirs to retrieve the music files 532 | auto sdirs = parser.retrieve>("d"); 533 | if (sdirs.empty()) 534 | sdirs.push_back("/"); // Assuming aboslute paths in the database 535 | 536 | // Start FastCGI interface 537 | FCGX_Init(); 538 | 539 | // Signal handling 540 | signal(SIGINT, sighandler); 541 | signal(SIGTERM, sighandler); 542 | signal(SIGPIPE, SIG_IGN); 543 | 544 | // Start worker threads for this 545 | unsigned nthreads = parser.count("t") ? atoi(parser.retrieve("t").c_str()) : 4; 546 | DataModel dbm(sqldb); 547 | ConcurrentQueue> reqqueue; 548 | SupersonicServer *workers[nthreads]; 549 | for (unsigned i = 0; i < nthreads; i++) 550 | workers[i] = new SupersonicServer(&dbm, &udata, &reqqueue, sdirs, cors_origin); 551 | 552 | std::cerr << "All workers up, serving until SIGINT/SIGTERM" << std::endl; 553 | 554 | // Now keep ingesting incoming requests, we do this in the main 555 | // thread since threads are much slower, unlikely to be a bottleneck. 556 | while (serving) { 557 | std::unique_ptr request(new FCGX_Request()); 558 | FCGX_InitRequest(request.get(), 0, 0); 559 | 560 | if (FCGX_Accept_r(request.get()) >= 0) 561 | // Get a worker that's free and queue it there 562 | reqqueue.push(std::move(request)); 563 | } 564 | 565 | std::cerr << "Signal caught! Starting shutdown" << std::endl; 566 | reqqueue.close(); 567 | 568 | // Just go ahead and delete workers 569 | for (unsigned i = 0; i < nthreads; i++) 570 | delete workers[i]; 571 | 572 | std::cerr << "All clear, service is down, flushing databases ..." << std::endl; 573 | sqlite3_close(sqldb); 574 | } 575 | 576 | 577 | -------------------------------------------------------------------------------- /userdata.cc: -------------------------------------------------------------------------------- 1 | 2 | #include "userdata.h" 3 | #include "datamodel.h" 4 | #include "util.h" 5 | 6 | 7 | // Intializes all the tables required for this to work 8 | 9 | static const char * init_sql = "\ 10 | CREATE TABLE `playlists` (\ 11 | `id` INTEGER NOT NULL UNIQUE PRIMARY KEY AUTOINCREMENT,\ 12 | `user` TEXT NOT NULL,\ 13 | `name` TEXT,\ 14 | `comment` TEXT,\ 15 | `public` INTEGER,\ 16 | `songs` BLOB\ 17 | );\ 18 | "; 19 | 20 | PlayList::PlayList(sqlite3_stmt * stmt) { 21 | id = sqlite3_column_int64 (stmt, 0); 22 | name = std::string((char*)sqlite3_column_text (stmt, 1)); 23 | comment = std::string((char*)sqlite3_column_text (stmt, 2)); 24 | username = std::string((char*)sqlite3_column_text (stmt, 3)); 25 | upublic = sqlite3_column_int64 (stmt, 4); 26 | 27 | auto length = sqlite3_column_bytes(stmt, 5); 28 | songs.reserve(length / 8); 29 | std::string data((char*)sqlite3_column_blob(stmt, 5), length); 30 | for (unsigned i = 0; i < length / 8U; i++) 31 | songs.push_back(a2i64((uint8_t*)&data[i * 8])); 32 | } 33 | 34 | void PlayList::flush(sqlite3 *db) const { 35 | sqlite3_stmt *stmt; 36 | sqlite3_prepare_v2(db, "INSERT OR REPLACE INTO playlists " 37 | "`id`, name, comment, user, public, songs VALUES " 38 | "(?, ?, ?, ?, ?, ?)", -1, &stmt, NULL); 39 | sqlite3_bind_int64(stmt, 1, id); 40 | sqlite3_bind_text (stmt, 2, name.c_str(), -1, NULL); 41 | sqlite3_bind_text (stmt, 3, comment.c_str(), -1, NULL); 42 | sqlite3_bind_text (stmt, 4, username.c_str(), -1, NULL); 43 | sqlite3_bind_int64(stmt, 5, upublic ? 1 : 0); 44 | 45 | std::string data; data.reserve(songs.size() * sizeof(uint64_t)); 46 | for (auto s : songs) 47 | data += i642a(s); 48 | sqlite3_bind_blob(stmt, 6, data.c_str(), data.size(), NULL); 49 | 50 | sqlite3_step(stmt); 51 | sqlite3_finalize(stmt); 52 | } 53 | 54 | UserData::UserData(sqlite3 *db) { 55 | // Run initial statements just in case, this should be a no-op if already there. 56 | sqlite3_exec(db, init_sql, NULL, NULL, NULL); 57 | 58 | this->dbh = db; 59 | } 60 | 61 | UserData::~UserData() { 62 | sqlite3_close(dbh); 63 | } 64 | 65 | std::unique_ptr UserData::getPlaylist(uint64_t pid) { 66 | sqlite3_stmt *stmt; 67 | sqlite3_prepare_v2(dbh, "SELECT `id`, name, comment, user, public, songs " 68 | "FROM playlists WHERE `id` = ?", -1, &stmt, NULL); 69 | sqlite3_bind_int64(stmt, 1, pid); 70 | PlayList *ret = nullptr; 71 | if (sqlite3_step(stmt) == SQLITE_ROW) 72 | ret = new PlayList(stmt); 73 | sqlite3_finalize(stmt); 74 | return std::unique_ptr(ret); 75 | } 76 | 77 | std::list UserData::getPlaylists(std::string user) { 78 | sqlite3_stmt *stmt; 79 | sqlite3_prepare_v2(dbh, "SELECT `id`, name, comment, user, public, songs " 80 | "FROM playlists WHERE user = ?", -1, &stmt, NULL); 81 | sqlite3_bind_text(stmt, 1, user.c_str(), -1, NULL); 82 | std::list ret; 83 | while (sqlite3_step(stmt) == SQLITE_ROW) 84 | ret.push_back(PlayList(stmt)); 85 | 86 | sqlite3_finalize(stmt); 87 | return ret; 88 | } 89 | 90 | -------------------------------------------------------------------------------- /userdata.h: -------------------------------------------------------------------------------- 1 | 2 | #ifndef __USER_DATA__H__ 3 | #define __USER_DATA__H__ 4 | 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | 12 | class PlayList { 13 | public: 14 | PlayList(sqlite3_stmt *); 15 | 16 | // Flush changes to database 17 | void flush(sqlite3 *db) const; 18 | 19 | // Attrs 20 | uint64_t id; 21 | std::string name, comment, username; 22 | bool upublic; 23 | std::vector songs; 24 | }; 25 | 26 | class UserData { 27 | private: 28 | sqlite3 *dbh; 29 | 30 | public: 31 | UserData(sqlite3 *db); 32 | ~UserData(); 33 | 34 | // No authentication here at all! 35 | std::unique_ptr getPlaylist(uint64_t pid); 36 | 37 | // Gets all playlists for a user, no auth as well. 38 | std::list getPlaylists(std::string user); 39 | }; 40 | 41 | 42 | #endif 43 | 44 | -------------------------------------------------------------------------------- /util.cc: -------------------------------------------------------------------------------- 1 | 2 | 3 | #include "util.h" 4 | 5 | unsigned char hexdec(char c) { 6 | if (c >= '0' && c <= '9') 7 | return c - '0'; 8 | else if (c >= 'a' && c <= 'f') 9 | return c - 'a' + 10; 10 | else if (c >= 'A' && c <= 'F') 11 | return c - 'A' + 10; 12 | return 0; 13 | } 14 | 15 | std::string hexdecode(std::string s) { 16 | if (s.size() & 1) 17 | return {}; 18 | std::string ret; 19 | for (unsigned i = 0; i < s.size(); i += 2) 20 | ret.push_back((char)((hexdec(s[i]) << 4) | hexdec(s[i+1]))); 21 | return ret; 22 | } 23 | 24 | uint64_t hexdecode64(std::string s) { 25 | uint64_t ret = 0; 26 | for (char c : s) { 27 | ret <<= 4; 28 | ret |= hexdec(c); 29 | } 30 | return ret; 31 | } 32 | 33 | std::string hexencode64(uint64_t n) { 34 | const static char hcs[] = "0123456789abcdef"; 35 | std::string ret; 36 | for (unsigned i = 0; i < 16; i++) { 37 | ret = hcs[n & 15] + ret; 38 | n >>= 4; 39 | } 40 | return ret; 41 | } 42 | 43 | std::string urldec(const std::string &s) { 44 | std::string ret; 45 | for (unsigned i = 0; i < s.size(); i++) { 46 | if (s[i] == '%' && i + 2 < s.size()) { 47 | ret += hexdecode(s.substr(i+1, 2)); 48 | i += 2; 49 | } 50 | else 51 | ret.push_back(s[i]); 52 | } 53 | return ret; 54 | } 55 | 56 | std::string cescape(std::string content, bool isxml) { 57 | std::string escaped; 58 | for (auto c: content) 59 | if (c == '"') escaped += """; 60 | else if (isxml && c == '<') escaped += "<"; 61 | else if (isxml && c == '>') escaped += ">"; 62 | else if (isxml && c == '&') escaped += "&"; 63 | else escaped += c; 64 | return escaped; 65 | } 66 | 67 | std::string base64Decode(const std::string & input) { 68 | if (input.length() % 4) 69 | return ""; 70 | 71 | //Setup a vector to hold the result 72 | std::string ret; 73 | unsigned int temp = 0; 74 | for (unsigned cursor = 0; cursor < input.size(); ) { 75 | for (unsigned i = 0; i < 4; i++) { 76 | unsigned char c = *(unsigned char*)&input[cursor]; 77 | temp <<= 6; 78 | if (c >= 0x41 && c <= 0x5A) 79 | temp |= c - 0x41; 80 | else if (c >= 0x61 && c <= 0x7A) 81 | temp |= c - 0x47; 82 | else if (c >= 0x30 && c <= 0x39) 83 | temp |= c + 0x04; 84 | else if (c == 0x2B) 85 | temp |= 0x3E; 86 | else if (c == 0x2F) 87 | temp |= 0x3F; 88 | else if (c == '=') { 89 | if (input.size() - cursor == 1) { 90 | ret.push_back((temp >> 16) & 0x000000FF); 91 | ret.push_back((temp >> 8 ) & 0x000000FF); 92 | return ret; 93 | } 94 | else if (input.size() - cursor == 2) { 95 | ret.push_back((temp >> 10) & 0x000000FF); 96 | return ret; 97 | } 98 | } 99 | cursor++; 100 | } 101 | ret.push_back((temp >> 16) & 0x000000FF); 102 | ret.push_back((temp >> 8 ) & 0x000000FF); 103 | ret.push_back((temp ) & 0x000000FF); 104 | } 105 | return ret; 106 | } 107 | 108 | std::unordered_multimap parse_vars(std::string body) { 109 | std::unordered_multimap vars; 110 | size_t p = 0; 111 | while (1) { 112 | size_t pe = body.find('&', p); 113 | std::string curv = pe != std::string::npos ? body.substr(p, pe - p) : body.substr(p); 114 | size_t peq = curv.find('='); 115 | if (peq != std::string::npos) 116 | vars.emplace(urldec(curv.substr(0, peq)), urldec(curv.substr(peq+1))); 117 | if (pe == std::string::npos) 118 | break; 119 | p = pe + 1; 120 | } 121 | 122 | return vars; 123 | } 124 | 125 | std::pair parse_range(std::string h) { 126 | // h is like bytes=X-Y (we ignore other formats) 127 | if (h.size() < 8 || h.substr(0, 6) != "bytes=") 128 | return {0, ~0ULL}; 129 | 130 | h = h.substr(6); 131 | uint64_t startoff = atoll(h.c_str()); 132 | 133 | auto p = h.find('-'); 134 | if (p == std::string::npos) 135 | return {0, ~0ULL}; 136 | 137 | uint64_t csize = atoll(&h[p+1]); 138 | if (h.size() <= p+1) 139 | csize = ~0ULL; 140 | 141 | return {startoff, csize}; 142 | } 143 | 144 | -------------------------------------------------------------------------------- /util.h: -------------------------------------------------------------------------------- 1 | 2 | #ifndef __UTIL_HDR_H__ 3 | #define __UTIL_HDR_H__ 4 | 5 | #include 6 | #include 7 | #include 8 | 9 | // Decodes hex -> bin 10 | unsigned char hexdec(char c); 11 | std::string hexdecode(std::string s); 12 | 13 | // 64 bit num hex encoded 14 | std::string hexencode64(uint64_t n); 15 | uint64_t hexdecode64(std::string s); 16 | 17 | // Decodes a URL to its original string 18 | std::string urldec(const std::string &s); 19 | 20 | // Escapes strings (for XML and JSON) 21 | std::string cescape(std::string content, bool isxml = false); 22 | 23 | // Decodes a base64 encoded string to a war byte buffer 24 | std::string base64Decode(const std::string & input); 25 | 26 | // Parses variables in the body of a request, or in a GET query 27 | std::unordered_multimap parse_vars(std::string body); 28 | 29 | // Parses a Range Header expression into byte ranges 30 | std::pair parse_range(std::string h); 31 | 32 | // Some inline stuff, LE magic 33 | static uint64_t a2i64(const uint8_t *h) { 34 | return ((uint64_t)h[0] << 0) | 35 | ((uint64_t)h[1] << 8) | 36 | ((uint64_t)h[2] << 16) | 37 | ((uint64_t)h[3] << 24) | 38 | ((uint64_t)h[4] << 32) | 39 | ((uint64_t)h[5] << 40) | 40 | ((uint64_t)h[6] << 48) | 41 | ((uint64_t)h[7] << 56); 42 | } 43 | 44 | static std::string i642a(uint64_t n) { 45 | std::string r(8, 0); 46 | for (unsigned i = 0; i < 8; i++) 47 | r[i] = n >> (i << 3); 48 | return r; 49 | } 50 | 51 | #endif 52 | 53 | --------------------------------------------------------------------------------