├── python
└── transcoder
│ └── .gitignore
├── books
└── x265-2.9参数设置.pdf
├── README.md
├── .gitignore
├── third_party
└── update.md
└── LICENSE
/python/transcoder/.gitignore:
--------------------------------------------------------------------------------
1 | FFmpeg
--------------------------------------------------------------------------------
/books/x265-2.9参数设置.pdf:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/JeffMony/AV_Library/HEAD/books/x265-2.9参数设置.pdf
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # 从0开始教你做一款剪映APP
2 | 最近有点忙，但是开源项目和文章还是要更新的。先简单更新一下目录:
3 | ## 1 剪映APP功能拆解
4 | ### 1.1 音视频录制
5 | ### 1.2 音视频编辑
6 | ### 1.3 音视频处理
7 | ## 2 用到的知识介绍
8 | ### 2.1 camera相关
9 | ### 2.2 opengl
10 | ### 2.3 mediacodec
11 | ### 2.4 ffmpeg
12 | ### 2.5 opensl
13 | ### 2.6 字体库
14 | ### 2.7 fdk-aac
15 | ### 2.8 x264或者hevc
16 | ### 2.9 日志记录库
17 | ### 2.10 png库
18 | ### 2.11 libyuv
19 | ### 2.12 soundtouch或者sonic
20 | ## 3 迭代开发
21 | ### 3.1 camera实现预览
22 | ### 3.2 camera结合opengl实现预览
23 | ### 3.3 camera预览实现9/16 3/4 1/1缩放
24 | ### 3.4 实现录制功能
25 | ### 3.5 实现音视频合成功能
26 | ### 3.6 实现美颜功能
27 | ### 3.7 实现滤镜功能
28 | ### 3.8 实现特效功能
29 | ### 3.9 实现转码功能
30 | ### 3.10 实现水印功能
31 |
32 |
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/.gitignore:
--------------------------------------------------------------------------------
1 | # Built application files
2 | *.apk
3 | *.aar
4 | *.ap_
5 | *.aab
6 |
7 | # Files for the ART/Dalvik VM
8 | *.dex
9 |
10 | # Java class files
11 | *.class
12 |
13 | # Generated files
14 | bin/
15 | gen/
16 | out/
17 | # Uncomment the following line in case you need and you don't have the release build type files in your app
18 | # release/
19 |
20 | # Gradle files
21 | .gradle/
22 | build/
23 |
24 | # Local configuration file (sdk path, etc)
25 | local.properties
26 |
27 | # Proguard folder generated by Eclipse
28 | proguard/
29 |
30 | # Log Files
31 | *.log
32 |
33 | # Android Studio Navigation editor temp files
34 | .navigation/
35 |
36 | # Android Studio captures folder
37 | captures/
38 |
39 | # IntelliJ
40 | *.iml
41 | .idea/workspace.xml
42 | .idea/tasks.xml
43 | .idea/gradle.xml
44 | .idea/assetWizardSettings.xml
45 | .idea/dictionaries
46 | .idea/libraries
47 | # Android Studio 3 in .gitignore file.
48 | .idea/caches
49 | .idea/modules.xml
50 | # Comment next line if keeping position of elements in Navigation Editor is relevant for you
51 | .idea/navEditor.xml
52 |
53 | # Keystore files
54 | # Uncomment the following lines if you do not want to check your keystore files in.
55 | #*.jks
56 | #*.keystore
57 |
58 | # External native build folder generated in Android Studio 2.2 and later
59 | .externalNativeBuild
60 | .cxx/
61 |
62 | # Google Services (e.g. APIs or Firebase)
63 | # google-services.json
64 |
65 | # Freeline
66 | freeline.py
67 | freeline/
68 | freeline_project_description.json
69 |
70 | # fastlane
71 | fastlane/report.xml
72 | fastlane/Preview.html
73 | fastlane/screenshots
74 | fastlane/test_output
75 | fastlane/readme.md
76 |
77 | # Version control
78 | vcs.xml
79 |
80 | # lint
81 | lint/intermediates/
82 | lint/generated/
83 | lint/outputs/
84 | lint/tmp/
85 | # lint/reports/
86 |
87 | .DS_Store
88 | .vscode
89 |
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/third_party/update.md:
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1 | - [音视频相关库的编译文档](#音视频相关库的编译文档)
2 | - [1.编译前准备](#1编译前准备)
3 | - [2.编译openssl](#2编译openssl)
4 | - [3.编译fdk-aac](#3编译fdk-aac)
5 | - [4.编译libx264](#4编译libx264)
6 | - [5.编译ffmpeg](#5编译ffmpeg)
7 | - [5.1 openssl找不到](#51-openssl找不到)
8 | - [5.2 AACENC_InfoStruct缺失encoderDelay](#52-aacenc_infostruct缺失encoderdelay)
9 | - [5.3 libfdk_aac找不到](#53-libfdk_aac找不到)
10 |
11 |
12 | ## 音视频相关库的编译文档
13 | 我们在做音视频相关产品的时候，离不开一些重要的库，下面列举一下：
14 | > * ffmpeg : 多媒体框架库，是音视频开发非常重要的一个库
15 | > * fdk-aac : 音频库，可以定制aac-he
16 | > * openssl : ssl库，和ffmpeg结合
17 | > * libx264 : videolan提供的h264相关的库，比ffmpeg原生自带的库要好用
18 | > * libx265 : videolan提供的hevc相关的库，压缩效率更加
19 | > * soundtouch : 变声库，比sonic功能呢强大
20 | > * libpng : 图片库
21 | > * libyuv : yuv库，可以做裁剪，形变等工作
22 |
23 | 上面简单介绍了一下各个库，这些库如何编译了，下面一一介绍:
24 |
25 |
26 | ### 1.编译前准备
27 | 配置环境变量ANROID_NDK，这儿我选择的NDK版本是android-ndk-r14b
28 | 选择NDK版本要慎重一点，因为有些NDK会成功，有些会失败
29 | 首先要在环境变量中配置ANDROID_NDK
30 |
31 | ### 2.编译openssl
32 | 执行init_openssl.sh
33 | openssl源码下载到./sources/openssl目录下
34 | 进入./sources目录，执行./compile_openssl.sh all
35 |
36 | ### 3.编译fdk-aac
37 | 执行init_fdkaac.sh
38 | fdk-aac源码下载到./sources/fdk-aac目录下
39 | 进入./sources目录，执行./compile_fdkaac.sh all
40 | 编译出现如下错误：
41 | ```
42 | libSBRdec/src/lpp_tran.cpp:122:21: fatal error: log/log.h: No such file or directory
43 | #include "log/log.h"
44 | ^
45 | compilation terminated.
46 | make: *** [libSBRdec/src/lpp_tran.lo] Error 1
47 | ```
48 | 因为使用特定平台的API，所以要找到这个代码，注释掉，继续编译，发现还是出错:
49 | ```
50 | libSBRdec/src/lpp_tran.cpp: In function 'void lppTransposer(HANDLE_SBR_LPP_TRANS, QMF_SCALE_FACTOR*, FIXP_DBL**, FIXP_DBL*, FIXP_DBL**, int, int, int, int, int, int, int, INVF_MODE*, INVF_MODE*)':
51 | libSBRdec/src/lpp_tran.cpp:342:50: error: 'android_errorWriteLog' was not declared in this scope
52 | android_errorWriteLog(0x534e4554, "112160868");
53 | ^
54 | libSBRdec/src/lpp_tran.cpp: In function 'void lppTransposerHBE(HANDLE_SBR_LPP_TRANS, HANDLE_HBE_TRANSPOSER, QMF_SCALE_FACTOR*, FIXP_DBL**, FIXP_DBL**, int, int, int, int, INVF_MODE*, INVF_MODE*)':
55 | libSBRdec/src/lpp_tran.cpp:940:50: error: 'android_errorWriteLog' was not declared in this scope
56 | android_errorWriteLog(0x534e4554, "112160868");
57 | ^
58 | make: *** [libSBRdec/src/lpp_tran.lo] Error 1
59 | ```
60 | 没办法，继续注释掉错误的代码.
61 | 可以编译成功了。
62 |
63 |
64 | ### 4.编译libx264
65 | 执行init_libx264.sh
66 | libx264源码下载到./sources/libx264目录下
67 | 进入./sources目录，执行./compile_libx264.sh all
68 |
69 | ### 5.编译ffmpeg
70 | 执行init_ffmpeg.sh
71 | ffmpeg源码下载到./sources/ffmpeg目录下
72 | 进入./sources目录，执行./compile_ffmpeg.sh all
73 | openssl、libfdk-aac、libx264是要集成到ffmpeg中的，所以在编译的时候需要链接进来。
74 | 还是会发生一些编译错误的，下面一一例举我遇到的编译问题:
75 |
76 | #### 5.1 openssl找不到
77 | 开始编译出现：
78 | ```
79 | ERROR: openssl not found
80 |
81 | ```
82 | 解决方案是修改ffmpeg/configure中的check逻辑。
83 | 找到configure文件中的6145行，将如下代码修改一下:
84 | ```
85 | enabled openssl && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
86 | check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
87 | check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
88 | check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
89 | check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
90 | die "ERROR: openssl not found"; }
91 |
92 | ```
93 | 修改后的代码: 修改了第二行
94 | ```
95 | enabled openssl && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
96 | check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
97 | check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
98 | check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
99 | check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
100 | die "ERROR: openssl not found"; }
101 |
102 | ```
103 | #### 5.2 AACENC_InfoStruct缺失encoderDelay
104 | 紧接着发生编译错误:
105 | ```
106 | libavcodec/libfdk-aacenc.c: In function 'aac_encode_init':
107 | libavcodec/libfdk-aacenc.c:292:34: error: 'AACENC_InfoStruct' has no member named 'encoderDelay'
108 | avctx->initial_padding = info.encoderDelay;
109 | ```
110 | 这个错误比较悲剧了，因为当前我们使用的fdk-aac版本是v2.2.0的，但是ffmpeg版本是n4.0.3，ffmpeg版本较低，
111 | 这时候要么升级ffmpeg版本，要么降低fdk-aac版本，随便你选择，这儿我选择了降级fdk-aac版本，
112 | 因为我们复用ijkplayer中ffmpeg，不太好降级ffmpeg
113 |
114 | fdk-aac降级到v0.1.6版本。
115 |
116 | #### 5.3 libfdk_aac找不到
117 | 已经降低了fdk-aac版本，但是又提示这个问题。这时候我们找到ffbuild/config.log，看看具体的问题.
118 | ```
119 | genericStds.cpp:(.text+0x360): undefined reference to `pow'
120 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKsqrt':
121 | genericStds.cpp:(.text+0x384): undefined reference to `sqrt'
122 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKatan':
123 | genericStds.cpp:(.text+0x390): undefined reference to `atan'
124 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKlog':
125 | genericStds.cpp:(.text+0x394): undefined reference to `log'
126 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKsin':
127 | genericStds.cpp:(.text+0x398): undefined reference to `sin'
128 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKcos':
129 | genericStds.cpp:(.text+0x39c): undefined reference to `cos'
130 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKexp':
131 | genericStds.cpp:(.text+0x3a0): undefined reference to `exp'
132 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKatan2':
133 | genericStds.cpp:(.text+0x3a4): undefined reference to `atan2'
134 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKacos':
135 | genericStds.cpp:(.text+0x3a8): undefined reference to `acos'
136 | /Users/jeffli/github/JianYing/av_tools/sources/build/fdk-aac/arm64/lib/libfdk-aac.a(genericStds.o): In function `FDKtan':
137 | genericStds.cpp:(.text+0x3ac): undefined reference to `tan'
138 | collect2: error: ld returned 1 exit status
139 | ERROR: libfdk_aac not found
140 | ```
141 | 这儿似乎是一些数学库函数找不到，那我们在编译的时候链接一些数据库就行了.如下:
142 | ```
143 | EXTRA_LDFLAGS="${EXTRA_LDFLAGS} -L${FDKAAC_LIB_DIR}/lib -lfdk-aac -lm"
144 |
145 | ```
146 | 加上了-lm 编译正常了。
147 |
148 |
149 |
--------------------------------------------------------------------------------
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