├── .gitignore
├── 7h800-2.mp4
├── COPYING
├── COPYING.LESSER
├── Classes
├── AppDelegate.h
├── AppDelegate.m
├── AudioPacketQueue.h
├── AudioPacketQueue.m
├── AudioPlayer.h
├── AudioPlayer.m
├── AudioUtilities.h
├── AudioUtilities.m
├── H264_Save.h
├── H264_Save.m
├── Mp4_Save.c
├── Mp4_Save.h
├── Utilities.h
├── Utilities.m
├── VideoFrameExtractor.h
├── VideoFrameExtractor.m
├── iFrameExtractorViewController.h
└── iFrameExtractorViewController.m
├── Default-568h@2x.png
├── Default.png
├── README.markdown
├── Storyboard.storyboard
├── gas-preprocessor.pl
├── h265_ex3.mp4
├── iFrameExtractor-Info.plist
├── iFrameExtractor.xcodeproj
├── project.pbxproj
├── project.xcworkspace
│ ├── contents.xcworkspacedata
│ ├── xcshareddata
│ │ └── iFrameExtractor.xccheckout
│ └── xcuserdata
│ │ └── wjie.xcuserdatad
│ │ └── UserInterfaceState.xcuserstate
└── xcuserdata
│ ├── liaokuohsun.xcuserdatad
│ └── xcdebugger
│ │ └── Breakpoints_v2.xcbkptlist
│ └── wjie.xcuserdatad
│ └── xcschemes
│ ├── iFrameExtractor.xcscheme
│ └── xcschememanagement.plist
├── iFrameExtractor_Prefix.pch
├── main.m
└── sophie.mov
/.gitignore:
--------------------------------------------------------------------------------
1 | ffmpeg/
2 | .DS_Store
3 |
4 | *.xcuserstate
5 |
6 | *.xcsettings
7 |
8 | *.xcscheme
9 |
10 | iFrameExtractor.xcodeproj/xcuserdata/liaokuohsun.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist
11 |
12 | iFrameExtractor.xcodeproj/xcuserdata/liaokuohsun.xcuserdatad/xcschemes/xcschememanagement.plist
13 |
--------------------------------------------------------------------------------
/7h800-2.mp4:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/alb423/iFrameExtractor/c64609dd34c2064e8e2680c1f2441aeed628c500/7h800-2.mp4
--------------------------------------------------------------------------------
/COPYING:
--------------------------------------------------------------------------------
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535 |
536 | Nothing in this License shall be construed as excluding or limiting
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538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
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548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
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571 | Program specifies that a certain numbered version of the GNU General
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573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
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585 | permissions. However, no additional obligations are imposed on any
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610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
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620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
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630 | to attach them to the start of each source file to most effectively
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633 |
634 |
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649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
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657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
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662 | might be different; for a GUI interface, you would use an "about box".
663 |
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665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
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673 | Public License instead of this License. But first, please read
674 | .
675 |
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--------------------------------------------------------------------------------
/COPYING.LESSER:
--------------------------------------------------------------------------------
1 | GNU LESSER GENERAL PUBLIC LICENSE
2 | Version 3, 29 June 2007
3 |
4 | Copyright (C) 2007 Free Software Foundation, Inc.
5 | Everyone is permitted to copy and distribute verbatim copies
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7 |
8 |
9 | This version of the GNU Lesser General Public License incorporates
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12 |
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--------------------------------------------------------------------------------
/Classes/AppDelegate.h:
--------------------------------------------------------------------------------
1 | //
2 | // AppDelegate.h
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 2016/11/24.
6 | //
7 | //
8 |
9 | #import
10 |
11 | @interface AppDelegate : UIResponder
12 |
13 | @property (strong, nonatomic) UIWindow *window;
14 |
15 | @end
16 |
--------------------------------------------------------------------------------
/Classes/AppDelegate.m:
--------------------------------------------------------------------------------
1 | //
2 | // AppDelegate.m
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 2016/11/24.
6 | //
7 | //
8 |
9 | #import "AppDelegate.h"
10 |
11 | #import "VideoFrameExtractor.h"
12 | #import "Utilities.h"
13 | #include "H264_Save.h"
14 |
15 |
16 | @implementation AppDelegate
17 |
18 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
19 | {
20 | // Override point for customization after application launch.
21 |
22 | return YES;
23 | }
24 |
25 | - (void)applicationWillResignActive:(UIApplication *)application
26 | {
27 | // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
28 | // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
29 | }
30 |
31 | - (void)applicationDidEnterBackground:(UIApplication *)application
32 | {
33 | NSLog(@"applicationDidEnterBackground");
34 |
35 | /*
36 | AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
37 | UINavigationController *nav = (UINavigationController *)delegate.window.rootViewController;
38 | */
39 |
40 | //[self postNotificationWithName:remoteControlShowMessage];
41 |
42 | // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
43 | // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
44 | }
45 |
46 | - (void)applicationWillEnterForeground:(UIApplication *)application
47 | {
48 | // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
49 | }
50 |
51 | - (void)applicationDidBecomeActive:(UIApplication *)application
52 | {
53 | // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
54 | }
55 |
56 | - (void)applicationWillTerminate:(UIApplication *)application
57 | {
58 | // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
59 | }
60 |
61 |
62 | - (void)postNotificationWithName:(NSString *)name
63 | {
64 | [[NSNotificationCenter defaultCenter] postNotificationName:name object:nil];
65 | }
66 |
67 |
68 | @end
69 |
--------------------------------------------------------------------------------
/Classes/AudioPacketQueue.h:
--------------------------------------------------------------------------------
1 | //
2 | // AudioPacketQueue.h
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 13/4/19.
6 | //
7 | //
8 |
9 | #ifndef AudioPacketQueue_h
10 | #define AudioPacketQueue_h
11 |
12 | #import
13 | #include "libavformat/avformat.h"
14 |
15 | @interface AudioPacketQueue : NSObject{
16 | NSMutableArray *pQueue;
17 | NSLock *pLock;
18 |
19 | }
20 | @property (nonatomic) NSInteger count;
21 | @property (nonatomic) NSInteger size;
22 | - (id) initQueue;
23 | - (void) destroyQueue;
24 | -(bool) putAVPacket: (AVPacket *) pkt;
25 | -(bool) getAVPacket :(AVPacket *) pkt;
26 | -(void)freeAVPacket:(AVPacket *) pkt;
27 | @end
28 |
29 | #endif
30 |
--------------------------------------------------------------------------------
/Classes/AudioPacketQueue.m:
--------------------------------------------------------------------------------
1 | //
2 | // AudioPacketQueue.m
3 | // a queue to store AVPacket from ffmpeg
4 | //
5 | // Created by Liao KuoHsun on 13/4/19.
6 | //
7 | //
8 |
9 | #import "AudioPacketQueue.h"
10 |
11 | @implementation AudioPacketQueue
12 |
13 | @synthesize count;
14 | @synthesize size;
15 |
16 | - (id) initQueue
17 | {
18 | self = [self init];
19 | if(self != nil)
20 | {
21 | pQueue = [[NSMutableArray alloc] init];
22 | pLock = [[NSLock alloc]init];
23 | count = 0;
24 | size = 0;
25 | }
26 | return self;
27 | }
28 |
29 | // Useless in ARC mode
30 | - (void) destroyQueue {
31 | AVPacket vxPacket;
32 | NSMutableData *packetData = nil;
33 |
34 | [pLock lock];
35 | while ([pQueue count]>0) {
36 | packetData = [pQueue objectAtIndex:0];
37 | if(packetData!= nil)
38 | {
39 | [packetData getBytes:&vxPacket length:sizeof(AVPacket)];
40 | av_packet_unref(&vxPacket);
41 | packetData = nil;
42 | [pQueue removeObjectAtIndex: 0];
43 | count--;
44 | }
45 | }
46 | //[pQueue removeAllObjects];
47 | count = 0;
48 | size = 0;
49 | NSLog(@"Release Audio Packet Queue");
50 | if(pQueue) pQueue = nil;
51 |
52 | [pLock unlock];
53 | if(pLock) pLock = nil;
54 |
55 | }
56 |
57 | -(bool) putAVPacket: (AVPacket *) pPacket{
58 |
59 | // memory leakage is related to pPacket
60 | // if ((av_dup_packet(pPacket)) < 0) {
61 | // NSLog(@"Error duplicating packet");
62 | // }
63 |
64 | [pLock lock];
65 |
66 | //NSLog(@"putAVPacket %d", [pQueue count]);
67 | NSMutableData *pTmpData = [[NSMutableData alloc] initWithBytes:pPacket length:sizeof(*pPacket)];
68 | [pQueue addObject: pTmpData];
69 | size += pPacket->size;
70 | pTmpData = nil;
71 | count= count + 1;
72 | [pLock unlock];
73 | return true;
74 | }
75 |
76 | -(bool ) getAVPacket :(AVPacket *) pPacket{
77 | NSMutableData *packetData = nil;
78 |
79 | // Do we have any items?
80 | [pLock lock];
81 | //if ([pQueue count]>0) {
82 | if (count>0) {
83 | packetData = [pQueue objectAtIndex:0];
84 | if(packetData!= nil)
85 | {
86 | unsigned long vCount = [pQueue count];
87 | // if(vCount<10)
88 | // NSLog(@"getAVPacket %ld", vCount);
89 | [packetData getBytes:pPacket length:sizeof(AVPacket)];
90 |
91 | packetData = nil;
92 | [pQueue removeObjectAtIndex: 0];
93 | if(pPacket)
94 | size = size - pPacket->size;
95 | count--;
96 | }
97 | [pLock unlock];
98 | return true;
99 | }
100 | else
101 | {
102 | [pLock unlock];
103 | return false;
104 | }
105 |
106 | return false;
107 | }
108 |
109 | -(void)freeAVPacket:(AVPacket *) pPacket{
110 | [pLock lock];
111 | av_packet_unref(pPacket);
112 | [pLock unlock];
113 | }
114 |
115 |
116 | @end
117 |
--------------------------------------------------------------------------------
/Classes/AudioPlayer.h:
--------------------------------------------------------------------------------
1 | //
2 | // AudioPlayer.h
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 13/4/19.
6 | //
7 | //
8 |
9 | #ifndef AudioPlayer_h
10 | #define AudioPlayer_h
11 |
12 | #import
13 | #import
14 | #import "AudioPacketQueue.h"
15 | #include "libavformat/avformat.h"
16 | #include "libavutil/opt.h"
17 | #include "libswresample/swresample.h"
18 |
19 | // An audio queue can use any number of buffers—your application specifies how many. A typical number is three.
20 | #define NUM_BUFFERS 3
21 | #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000
22 |
23 | typedef enum eAACType {
24 | eAAC_UNDEFINED = 0,
25 | eAAC_RAW = 1,
26 | eAAC_ADTS = 2,
27 | eAAC_LATM = 3,
28 | }eAACType;
29 |
30 |
31 | @interface AudioPlayer : NSObject{
32 |
33 | enum eAudioStatus {
34 | eAudioRunning = 1,
35 | eAudioStop = 2
36 | };
37 |
38 | enum eAudioRecordingStatus {
39 | eRecordInit = 1,
40 | eRecordRecording = 2,
41 | eRecordStop = 3
42 | };
43 |
44 | // 1
45 | AudioStreamBasicDescription mDataFormat; // 2
46 | AudioQueueRef mQueue; // 3
47 | AudioQueueBufferRef mBuffers[NUM_BUFFERS]; // 4
48 | AudioFileID mAudioFile; // 5
49 | UInt32 bufferByteSize; // 6
50 | SInt64 mCurrentPacket; // 7
51 | UInt32 mNumPacketsToRead; // 8
52 | AudioStreamPacketDescription *mPacketDescs; // 9
53 | bool mIsRunning; // 10
54 |
55 | bool isFormatVBR;
56 |
57 | AVCodecContext *aCodecCtx;
58 | AudioPacketQueue *audioPacketQueue;
59 | SwrContext *pSwrCtx;
60 |
61 | long LastStartTime;
62 |
63 | // For audio recording
64 | AVFormatContext *pRecordingAudioFC;
65 | AVCodecContext *pOutputCodecContext;
66 | bool enableRecording;
67 | UInt32 vRecordingAudioStreamIdx;
68 | UInt32 vRecordingAudioFormat;
69 | UInt32 vRecordingStatus;
70 | UInt32 vAudioOutputFileSize;
71 | FILE * pAudioOutputFile;
72 | //NSMutableArray *pSampleQueue;
73 | }
74 |
75 | -(id)initAudio: (AudioPacketQueue *) audioQueue withCodecCtx:(AVCodecContext *) aCodecCtx;
76 | - (int) Play;
77 | - (void) Stop:(BOOL)bStopImmediatelly;
78 | - (void) SetVolume:(float)vVolume;
79 | -(void) decodeAudioFile: (NSString *) FilePathIn ToPCMFile:(NSString *) FilePathOut withCodecCtx: (AVCodecContext *)pAudioCodecCtx withFormat:(AVFormatContext *) pFormatCtx withStreamIdx :(int) audioStream;
80 | -(int) getStatus;
81 |
82 | -(bool) putAVPacket: (AVPacket *) pkt;
83 | -(bool) getAVPacket :(AVPacket *) pkt;
84 | -(void)freeAVPacket:(AVPacket *) pkt;
85 | -(NSInteger) getSize;
86 | - (void) RecordingStart:(NSString *)pRecordingFile;
87 | - (void) RecordingStop;
88 | - (void) RecordingSetAudioFormat:(int)vAudioFormat;
89 | @property BOOL bIsADTSAAS;
90 | //@property NSMutableArray *pSampleQueue;
91 | @property eAACType vAACType;
92 | @end
93 |
94 | #endif
95 |
--------------------------------------------------------------------------------
/Classes/AudioUtilities.h:
--------------------------------------------------------------------------------
1 | //
2 | // Utilities.h
3 | // FFmpegAudioPlayer
4 | //
5 | // Created by albert on 13/4/28.
6 | // Copyright (c) 2013年 Liao KuoHsun. All rights reserved.
7 | //
8 |
9 | #ifndef AudioUtilities_h
10 | #define AudioUtilities_h
11 |
12 | #import
13 | #import
14 | #import "AudioPacketQueue.h"
15 | #include "libavformat/avformat.h"
16 | #include "libavutil/opt.h"
17 | #include "libswresample/swresample.h"
18 |
19 | @interface AudioUtilities : NSObject
20 |
21 | // Reference : https://github.com/mstorsjo/libav/blob/fdk-aac/libavcodec/aacadtsdec.c
22 | typedef struct AACADTSHeaderInfo {
23 |
24 | // == adts_fixed_header ==
25 | uint16_t syncword; // 12 bslbf
26 | uint8_t ID; // 1 bslbf
27 | uint8_t layer; // 2 uimsbf
28 | uint8_t protection_absent; // 1 bslbf
29 | uint8_t profile; // 2 uimsbf
30 | uint8_t sampling_frequency_index; // 4 uimsbf
31 | uint8_t private_bit; // 1 bslbf
32 | uint8_t channel_configuration; // 3 uimsbf
33 | uint8_t original_copy; // 1 bslbf
34 | uint8_t home; // 1 bslbf
35 |
36 | // == adts_variable_header ==
37 | uint8_t copyright_identification_bit; //1 bslbf
38 | uint8_t copyright_identification_start; //1 bslbf
39 | uint16_t frame_length; //13 bslbf
40 | uint16_t adts_buffer_fullness; //11 bslbf
41 | uint8_t number_of_raw_data_blocks_in_frame; //2 uimsfb
42 |
43 | } tAACADTSHeaderInfo;
44 |
45 | + (BOOL) parseAACADTSHeader:(uint8_t *) pInput ToHeader:(tAACADTSHeaderInfo *) pADTSHeader;
46 | + (int) getMPEG4AudioSampleRates: (uint8_t) vSamplingIndex;
47 |
48 | + (int) EstimateAudioSecondsByBufferSize: (uint32_t) vSize WithSampleRate: (uint32_t)vSampleRate WithChannel: (uint32_t) vChannel ;
49 | + (id)initForDecodeAudioFile: (NSString *) FilePathIn ToPCMFile:(NSString *) FilePathOut;
50 | + (void) PrintFileStreamBasicDescription:(AudioStreamBasicDescription *) dataFormat;
51 | + (void) PrintFileStreamBasicDescriptionFromFile:(NSString *) FilePath;
52 | + (void) writeWavHeaderWithCodecCtx: (AVCodecContext *)pAudioCodecCtx withFormatCtx: (AVFormatContext *) pFormatCtx toFile: (FILE *) wavFile;
53 | @end
54 |
55 | #endif
56 |
57 |
--------------------------------------------------------------------------------
/Classes/AudioUtilities.m:
--------------------------------------------------------------------------------
1 | //
2 | // Utilities.m
3 | // FFmpegAudioPlayer
4 | //
5 | // Created by albert on 13/4/28.
6 | // Copyright (c) 2013年 Liao KuoHsun. All rights reserved.
7 | //
8 |
9 | #import "AudioUtilities.h"
10 |
11 | @implementation AudioUtilities
12 |
13 | #pragma mark - For specific audio header parser
14 |
15 | // TODO: parseAACADTSHeader
16 | + (BOOL) parseAACADTSHeader:(uint8_t *) pInput ToHeader:(tAACADTSHeaderInfo *) pADTSHeader
17 | {
18 | BOOL bHasSyncword = FALSE;
19 | if(pADTSHeader==nil)
20 | return FALSE;
21 |
22 | // == adts_fixed_header ==
23 | // syncword; 12 bslbf should be 0x1111 1111 1111
24 | if(pInput[0]==0xFF)
25 | {
26 | if((pInput[1]&0xF0)==0xF0)
27 | {
28 | bHasSyncword = TRUE;
29 | }
30 | }
31 |
32 | if(!bHasSyncword) return FALSE;
33 |
34 | //== adts_fixed_header ==
35 | // uint16_t syncword; // 12 bslbf
36 | // uint8_t ID; // 1 bslbf
37 | // uint8_t layer; // 2 uimsbf
38 | // uint8_t protection_absent; // 1 bslbf
39 | // uint8_t profile; // 2 uimsbf
40 | // uint8_t sampling_frequency_index; // 4 uimsbf
41 | // uint8_t private_bit; // 1 bslbf
42 | // uint8_t channel_configuration; // 3 uimsbf
43 | // uint8_t original_copy; // 1 bslbf
44 | // uint8_t home; // 1 bslbf
45 |
46 | pADTSHeader->syncword = 0x0fff;
47 | pADTSHeader->ID = (pInput[1]&0x08)>>3;
48 | pADTSHeader->layer = (pInput[1]&0x06)>>2;
49 | pADTSHeader->protection_absent = pInput[1]&0x01;
50 |
51 | pADTSHeader->profile = (pInput[2]&0xC0)>>6;
52 | pADTSHeader->sampling_frequency_index = (pInput[2]&0x3C)>>2;
53 | pADTSHeader->private_bit = (pInput[2]&0x02)>>1;
54 |
55 | pADTSHeader->channel_configuration = ((pInput[2]&0x01)<<2) + ((pInput[3]&0xC0)>>6);
56 | pADTSHeader->original_copy = ((pInput[3]&0x20)>>5);
57 | pADTSHeader->home = ((pInput[3]&0x10)>>4);
58 |
59 |
60 | // == adts_variable_header ==
61 | // copyright_identification_bit; 1 bslbf
62 | // copyright_identification_start; 1 bslbf
63 | // frame_length; 13 bslbf
64 | // adts_buffer_fullness; 11 bslbf
65 | // number_of_raw_data_blocks_in_frame; 2 uimsfb
66 |
67 | pADTSHeader->copyright_identification_bit = ((pInput[3]&0x08)>>3);
68 | pADTSHeader->copyright_identification_start = ((pInput[3]&0x04)>>2);
69 | pADTSHeader->frame_length = ((pInput[3]&0x03)<<11) + ((pInput[4])<<3) + ((pInput[5]&0xE0)>>5);
70 | pADTSHeader->adts_buffer_fullness = ((pInput[5]&0x1F)<<6) + ((pInput[6]&0xFC)>>2);
71 | pADTSHeader->number_of_raw_data_blocks_in_frame = ((pInput[6]&0x03));
72 |
73 |
74 | // We can't use bits mask to convert byte array to ADTS structure.
75 | // http://mjfrazer.org/mjfrazer/bitfields/
76 | // Big endian machines pack bitfields from most significant byte to least.
77 | // Little endian machines pack bitfields from least significant byte to most.
78 | // Direct bits mapping is hard.... we should implement a parser ourself.
79 |
80 | return TRUE;
81 |
82 |
83 | ;
84 | }
85 |
86 | // TODO in the future for audio recording
87 | - (uint8_t *) generateAACADTSHeader:(uint8_t *) pInOut ToHeader:(tAACADTSHeaderInfo *) pADTSHeader
88 | {
89 | if(pADTSHeader==nil)
90 | return NULL;
91 |
92 | // adts_fixed_header
93 | // syncword; 12 bslbf
94 | // ID; 1 bslbf
95 | // layer; 2 uimsbf
96 | // protection_absent; 1 bslbf
97 | // profile; 2 uimsbf
98 | // sampling_frequency_index; 4 uimsbf
99 | // private_bit; 1 bslbf
100 | // channel_configuration; 3 uimsbf
101 | // original/copy; 1 bslbf
102 | // home; 1 bslbf
103 |
104 | // adts_variable_header
105 | // copyright_identification_bit; 1 bslbf
106 | // copyright_identification_start; 1 bslbf
107 | // frame_length; 13 bslbf
108 | // adts_buffer_fullness; 11 bslbf
109 | // number_of_raw_data_blocks_in_frame; 2 uimsfb
110 |
111 | return NULL;
112 | }
113 |
114 | + (int) getMPEG4AudioSampleRates: (uint8_t) vSamplingIndex
115 | {
116 | int pRates[13] = {
117 | 96000, 88200, 64000, 48000, 44100, 32000,
118 | 24000, 22050, 16000, 12000, 11025, 8000, 7350
119 | };
120 |
121 | if(vSamplingIndex<13)
122 | return pRates[vSamplingIndex];
123 | else
124 | return 0;
125 | }
126 |
127 | + (void) PrintFileStreamBasicDescriptionFromFile:(NSString *) filePath
128 | {
129 | OSStatus status;
130 | UInt32 size;
131 | AudioFileID audioFile;
132 | AudioStreamBasicDescription dataFormat;
133 |
134 | CFURLRef URL = (__bridge CFURLRef)[NSURL fileURLWithPath:filePath];
135 | //status=AudioFileOpenURL(URL, kAudioFileReadPermission, kAudioFileAAC_ADTSType, &audioFile);
136 | status=AudioFileOpenURL(URL, kAudioFileReadPermission, 0, &audioFile);
137 | if (status != noErr) {
138 | NSLog(@"*** Error *** PlayAudio - play:Path: could not open audio file. Path given was: %@", filePath);
139 | return ;
140 | }
141 | else {
142 | NSLog(@"*** OK *** : %@", filePath);
143 | }
144 |
145 | size = sizeof(dataFormat);
146 | AudioFileGetProperty(audioFile, kAudioFilePropertyDataFormat, &size, &dataFormat);
147 | if(size>0){
148 | NSLog(@"mFormatID=%d", (signed int)dataFormat.mFormatID);
149 | NSLog(@"mFormatFlags=%d", (signed int)dataFormat.mFormatFlags);
150 | NSLog(@"mSampleRate=%ld", (signed long int)dataFormat.mSampleRate);
151 | NSLog(@"mBitsPerChannel=%d", (signed int)dataFormat.mBitsPerChannel);
152 | NSLog(@"mBytesPerFrame=%d", (signed int)dataFormat.mBytesPerFrame);
153 | NSLog(@"mBytesPerPacket=%d", (signed int)dataFormat.mBytesPerPacket);
154 | NSLog(@"mChannelsPerFrame=%d", (signed int)dataFormat.mChannelsPerFrame);
155 | NSLog(@"mFramesPerPacket=%d", (signed int)dataFormat.mFramesPerPacket);
156 | NSLog(@"mReserved=%d", (signed int)dataFormat.mReserved);
157 | }
158 |
159 | AudioFileClose(audioFile);
160 | }
161 |
162 | + (void) PrintFileStreamBasicDescription:(AudioStreamBasicDescription *) dataFormat
163 | {
164 | NSLog(@"mFormatID=%d", (signed int)dataFormat->mFormatID);
165 | NSLog(@"mFormatFlags=%d", (signed int)dataFormat->mFormatFlags);
166 | NSLog(@"mSampleRate=%ld", (signed long int)dataFormat->mSampleRate);
167 | NSLog(@"mBitsPerChannel=%d", (signed int)dataFormat->mBitsPerChannel);
168 | NSLog(@"mBytesPerFrame=%d", (signed int)dataFormat->mBytesPerFrame);
169 | NSLog(@"mBytesPerPacket=%d", (signed int)dataFormat->mBytesPerPacket);
170 | NSLog(@"mChannelsPerFrame=%d", (signed int)dataFormat->mChannelsPerFrame);
171 | NSLog(@"mFramesPerPacket=%d", (signed int)dataFormat->mFramesPerPacket);
172 | NSLog(@"mReserved=%d", (signed int)dataFormat->mReserved);
173 | }
174 |
175 |
176 | + (void) writeWavHeaderWithCodecCtx: (AVCodecContext *)pAudioCodecCtx withFormatCtx: (AVFormatContext *) pFormatCtx toFile: (FILE *) wavFile;
177 | {
178 | char *data;
179 | int32_t long_temp;
180 | int16_t short_temp;
181 | int16_t BlockAlign;
182 | int32_t fileSize;
183 | int32_t audioDataSize=0;
184 |
185 | int vBitsPerSample = 0;
186 | switch(pAudioCodecCtx->sample_fmt) {
187 | case AV_SAMPLE_FMT_S16:
188 | vBitsPerSample=16;
189 | break;
190 | case AV_SAMPLE_FMT_S32:
191 | vBitsPerSample=32;
192 | break;
193 | case AV_SAMPLE_FMT_U8:
194 | vBitsPerSample=8;
195 | break;
196 | default:
197 | vBitsPerSample=16;
198 | break;
199 | }
200 |
201 | if(pFormatCtx)
202 | {
203 | audioDataSize= (int32_t)((pFormatCtx->duration)*(vBitsPerSample/8)*(pAudioCodecCtx->sample_rate)*(pAudioCodecCtx->channels));
204 | }
205 | fileSize=audioDataSize+36;
206 |
207 | // =============
208 | // fmt subchunk
209 | data="RIFF";
210 | fwrite(data,sizeof(char),4,wavFile);
211 | fwrite(&fileSize,sizeof(int32_t),1,wavFile);
212 |
213 | //"WAVE"
214 | data="WAVE";
215 | fwrite(data,sizeof(char),4,wavFile);
216 |
217 |
218 | // =============
219 | // fmt subchunk
220 | data="fmt ";
221 | fwrite(data,sizeof(char),4,wavFile);
222 |
223 | // SubChunk1Size (16 for PCM)
224 | long_temp=16;
225 | fwrite(&long_temp,sizeof(int32_t),1,wavFile);
226 |
227 | // AudioFormat, 1=PCM
228 | short_temp=0x01;
229 | fwrite(&short_temp,sizeof(int16_t),1,wavFile);
230 |
231 | // NumChannels (mono=1, stereo=2)
232 | short_temp=(pAudioCodecCtx->channels);
233 | fwrite(&short_temp,sizeof(int16_t),1,wavFile);
234 |
235 | // SampleRate (U32)
236 | long_temp=(pAudioCodecCtx->sample_rate);
237 | fwrite(&long_temp,sizeof(int32_t),1,wavFile);
238 |
239 | // ByteRate (U32)
240 | long_temp=(vBitsPerSample/8)*(pAudioCodecCtx->channels)*(pAudioCodecCtx->sample_rate);
241 | fwrite(&long_temp,sizeof(int32_t),1,wavFile);
242 |
243 | // BlockAlign (U16)
244 | BlockAlign=(vBitsPerSample/8)*(pAudioCodecCtx->channels);
245 | fwrite(&BlockAlign,sizeof(int16_t),1,wavFile);
246 |
247 | // BitsPerSaympe (U16)
248 | short_temp=(vBitsPerSample);
249 | fwrite(&short_temp,sizeof(int16_t),1,wavFile);
250 |
251 | // =============
252 | // Data Subchunk
253 | data="data";
254 | fwrite(data,sizeof(char),4,wavFile);
255 |
256 | // SubChunk2Size
257 | fwrite(&audioDataSize,sizeof(int32_t),1,wavFile);
258 |
259 | fseek(wavFile,44,SEEK_SET);
260 | }
261 |
262 |
263 | // Used to decode an audio file to PCM file with WAV header
264 | +(id) initForDecodeAudioFile: (NSString *) FilePathIn ToPCMFile:(NSString *) FilePathOut {
265 | // Test to write a audio file into PCM format file
266 | FILE *wavFile=NULL;
267 | AVPacket AudioPacket={0};
268 | AVFrame *pAVFrame1;
269 | int iFrame=0;
270 | int audioFileSize=0;
271 |
272 | AVCodec *pAudioCodec;
273 | AVCodecContext *pAudioCodecCtx;
274 | AVFormatContext *pAudioFormatCtx;
275 | SwrContext *pSwrCtx = NULL;
276 |
277 | int audioStream = -1;
278 |
279 | avcodec_register_all();
280 | av_register_all();
281 | avformat_network_init();
282 |
283 | pAudioFormatCtx = avformat_alloc_context();
284 |
285 | if(avformat_open_input(&pAudioFormatCtx, [FilePathIn cStringUsingEncoding:NSASCIIStringEncoding], NULL, NULL) != 0){
286 | av_log(NULL, AV_LOG_ERROR, "Couldn't open file\n");
287 | }
288 |
289 | if(avformat_find_stream_info(pAudioFormatCtx,NULL) < 0) {
290 | av_log(NULL, AV_LOG_ERROR, "Couldn't find stream information\n");
291 | }
292 |
293 | av_dump_format(pAudioFormatCtx, 0, [FilePathIn UTF8String], 0);
294 |
295 | int i;
296 | for(i=0;inb_streams;i++){
297 | if(pAudioFormatCtx->streams[audioStream]->codecpar->codec_type==AVMEDIA_TYPE_AUDIO){
298 | audioStream=i;
299 | break;
300 | }
301 | }
302 | if(audioStream<0) {
303 | av_log(NULL, AV_LOG_ERROR, "Cannot find a audio stream in the input file\n");
304 | return nil;
305 | }
306 |
307 |
308 | //pAudioCodecCtx = pAudioFormatCtx->streams[audioStream]->codec;
309 | pAudioCodecCtx = avcodec_alloc_context3(NULL);
310 | avcodec_parameters_to_context(pAudioCodecCtx, pAudioFormatCtx->streams[audioStream]->codecpar);
311 |
312 | pAudioCodec = avcodec_find_decoder(pAudioCodecCtx->codec_id);
313 | if(pAudioCodec == NULL) {
314 | av_log(NULL, AV_LOG_ERROR, "Unsupported audio codec!\n");
315 | }
316 |
317 | // If we want to change the argument about decode
318 | // We should set before invoke avcodec_open2()
319 | if(avcodec_open2(pAudioCodecCtx, pAudioCodec, NULL) < 0) {
320 | av_log(NULL, AV_LOG_ERROR, "Cannot open audio decoder\n");
321 | }
322 |
323 | if(pAudioCodecCtx->sample_fmt==AV_SAMPLE_FMT_FLTP)
324 | {
325 | pSwrCtx = swr_alloc_set_opts(pSwrCtx,
326 | pAudioCodecCtx->channel_layout,
327 | AV_SAMPLE_FMT_S16,
328 | pAudioCodecCtx->sample_rate,
329 | pAudioCodecCtx->channel_layout,
330 | AV_SAMPLE_FMT_FLTP,
331 | pAudioCodecCtx->sample_rate,
332 | 0,
333 | 0);
334 | if(swr_init(pSwrCtx)<0)
335 | {
336 | NSLog(@"swr_init() for AV_SAMPLE_FMT_FLTP fail");
337 | return nil;
338 | }
339 | }
340 | // For topview ipcam pcm_law
341 | else if(pAudioCodecCtx->bits_per_coded_sample==8)
342 | //else if(pAudioCodecCtx->sample_fmt==AV_SAMPLE_FMT_U8)
343 | {
344 | pSwrCtx = swr_alloc_set_opts(pSwrCtx,
345 | 1,//pAudioCodecCtx->channel_layout,
346 | AV_SAMPLE_FMT_S16,
347 | pAudioCodecCtx->sample_rate,
348 | 1,//pAudioCodecCtx->channel_layout,
349 | AV_SAMPLE_FMT_U8,
350 | pAudioCodecCtx->sample_rate,
351 | 0,
352 | 0);
353 | if(swr_init(pSwrCtx)<0)
354 | {
355 | NSLog(@"swr_init() fail");
356 | return nil;
357 | }
358 | }
359 |
360 | wavFile=fopen([FilePathOut UTF8String],"wb");
361 | if (wavFile==NULL)
362 | {
363 | printf("open file for writing error\n");
364 | return self;
365 | }
366 |
367 | pAVFrame1 = av_frame_alloc();
368 | av_init_packet(&AudioPacket);
369 |
370 | int buffer_size = 192000 + FF_INPUT_BUFFER_PADDING_SIZE;
371 | uint8_t buffer[buffer_size];
372 | AudioPacket.data = buffer;
373 | AudioPacket.size = buffer_size;
374 |
375 | [AudioUtilities writeWavHeaderWithCodecCtx: pAudioCodecCtx withFormatCtx: pAudioFormatCtx toFile: wavFile];
376 | while(av_read_frame(pAudioFormatCtx,&AudioPacket)>=0) {
377 | if(AudioPacket.stream_index==audioStream) {
378 | int vRet=0;
379 | if((iFrame++)>=4000)
380 | break;
381 |
382 | avcodec_send_packet(pAudioCodecCtx, &AudioPacket);
383 | do {
384 | vRet = avcodec_receive_frame(pAudioCodecCtx, pAVFrame1);
385 | } while(vRet==EAGAIN);
386 |
387 | if(vRet<0){
388 | printf("Error while decoding\n");
389 | break;
390 | }
391 | else {
392 | int data_size = av_samples_get_buffer_size(NULL, pAudioCodecCtx->channels,
393 | pAVFrame1->nb_samples,pAudioCodecCtx->sample_fmt, 1);
394 |
395 | // Resampling
396 | if(pAudioCodecCtx->sample_fmt==AV_SAMPLE_FMT_FLTP){
397 | int in_samples = pAVFrame1->nb_samples;
398 | int outCount=0;
399 | uint8_t *out=NULL;
400 | int out_linesize;
401 | av_samples_alloc(&out,
402 | &out_linesize,
403 | pAVFrame1->channels,
404 | in_samples,
405 | AV_SAMPLE_FMT_S16,
406 | 0
407 | );
408 | outCount = swr_convert(pSwrCtx,
409 | (uint8_t **)&out,
410 | in_samples,
411 | (const uint8_t **)pAVFrame1->extended_data,
412 | in_samples);
413 |
414 | if(outCount<0)
415 | NSLog(@"swr_convert fail");
416 |
417 | fwrite(out, 1, data_size/2, wavFile);
418 | audioFileSize+=data_size/2;
419 | }
420 |
421 | fflush(wavFile);
422 |
423 | }
424 | }
425 | av_packet_unref(&AudioPacket);
426 | }
427 | fseek(wavFile,40,SEEK_SET);
428 | fwrite(&audioFileSize,1,sizeof(int32_t),wavFile);
429 | audioFileSize+=36;
430 | fseek(wavFile,4,SEEK_SET);
431 | fwrite(&audioFileSize,1,sizeof(int32_t),wavFile);
432 | fclose(wavFile);
433 |
434 | if (pSwrCtx) swr_free(&pSwrCtx);
435 | if (pAVFrame1) av_frame_free(&pAVFrame1);
436 | if (pAudioCodecCtx) avcodec_close(pAudioCodecCtx);
437 | if (pAudioFormatCtx) {
438 | avformat_close_input(&pAudioFormatCtx);
439 | }
440 | return self;
441 | }
442 |
443 | + (int) EstimateAudioSecondsByBufferSize: (uint32_t) vSize WithSampleRate: (uint32_t)vSampleRate WithChannel: (uint32_t) vChannel
444 | {
445 | return vSize/(vSampleRate*vChannel);
446 | }
447 | @end
448 |
--------------------------------------------------------------------------------
/Classes/H264_Save.h:
--------------------------------------------------------------------------------
1 | //
2 | // H264_Save.h
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 13/5/24.
6 | //
7 | //
8 |
9 | #ifndef H264_Save_h
10 | #define H264_Save_h
11 |
12 |
13 | // TODO: when PTS_DTS_IS_CORRECT==1, it should ok??
14 | #define PTS_DTS_IS_CORRECT 1
15 |
16 | extern int h264_file_create(const char *pFilePath, AVFormatContext *fc, AVCodecContext *pCodecCtx,AVCodecContext *pAudioCodecCtx, double fps, void *p, int len );
17 | extern void h264_file_write_frame(AVFormatContext *fc, int vStreamId, const void* p, int len, int64_t dts, int64_t pts);
18 | extern void h264_file_write_audio_frame(AVFormatContext *fc, AVCodecContext *pAudioCodecContext,int vStreamIdx, const void* p, int len, int64_t dts, int64_t pts );
19 | extern void h264_file_close(AVFormatContext *fc);
20 |
21 | extern void h264_file_write_frame2(AVFormatContext *fc, int vStreamIdx, AVPacket *pkt );
22 |
23 | typedef enum
24 | {
25 | eH264RecIdle = 0,
26 | eH264RecInit,
27 | eH264RecActive,
28 | eH264RecClose
29 | } eH264RecordState;
30 |
31 |
32 | #endif
33 |
--------------------------------------------------------------------------------
/Classes/H264_Save.m:
--------------------------------------------------------------------------------
1 | //
2 | // H264_Save.c
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 13/5/24.
6 | //
7 | //
8 |
9 | // Reference ffmpeg\doc\examples\muxing.c
10 | #include
11 | #include "libavcodec/avcodec.h"
12 | #include "libavformat/avformat.h"
13 | #include "H264_Save.h"
14 | #import "AudioUtilities.h"
15 |
16 | int vVideoStreamIdx = -1, vAudioStreamIdx = -1, waitkey = 1;
17 |
18 |
19 |
20 | #if 1 //FFMpeg will link to libiconv(), so I write wrapp function here
21 | #include
22 | size_t libiconv(iconv_t cd,
23 | char **inbuf, size_t *inbytesleft,
24 | char **outbuf, size_t *outbytesleft)
25 | {
26 | return iconv( cd, inbuf, inbytesleft, outbuf, outbytesleft);
27 | }
28 |
29 | iconv_t libiconv_open(const char *tocode, const char *fromcode)
30 | {
31 | return iconv_open(tocode, fromcode);
32 | }
33 |
34 | int libiconv_close(iconv_t cd)
35 | {
36 | return iconv_close(cd);
37 | }
38 | #endif
39 |
40 | // < 0 = error
41 | // 0 = I-Frame
42 | // 1 = P-Frame
43 | // 2 = B-Frame
44 | // 3 = S-Frame
45 | static int getVopType( const void *p, int len )
46 | {
47 |
48 | if ( !p || 6 >= len )
49 | {
50 | fprintf(stderr, "getVopType() error");
51 | return -1;
52 | }
53 |
54 | unsigned char *b = (unsigned char*)p;
55 |
56 | // Verify VOP id
57 | if ( 0xb6 == *b )
58 | {
59 | b++;
60 | return ( *b & 0xc0 ) >> 6;
61 | } // end if
62 |
63 | switch( *b )
64 | {
65 | case 0x65 : return 0;
66 | case 0x61 : return 1;
67 | case 0x01 : return 2;
68 | } // end switch
69 |
70 | return -1;
71 | }
72 |
73 | void h264_file_close(AVFormatContext *fc)
74 | {
75 | if ( !fc )
76 | return;
77 |
78 | av_write_trailer( fc );
79 |
80 | if ( fc->oformat && !( fc->oformat->flags & AVFMT_NOFILE ) && fc->pb )
81 | avio_close( fc->pb );
82 |
83 | av_free( fc );
84 | }
85 |
86 |
87 |
88 | // Since the data may not from ffmpeg as AVPacket format
89 | void h264_file_write_frame(AVFormatContext *fc, int vStreamIdx, const void* p, int len, int64_t dts, int64_t pts )
90 | {
91 | AVStream *pst = NULL;
92 | AVPacket pkt;
93 |
94 | if ( 0 > vVideoStreamIdx )
95 | return;
96 |
97 | // may be audio or video
98 | pst = fc->streams[ vStreamIdx ];
99 |
100 | // Init packet
101 | av_init_packet( &pkt );
102 |
103 | if(vStreamIdx ==vVideoStreamIdx)
104 | {
105 | pkt.flags |= ( 0 >= getVopType( p, len ) ) ? AV_PKT_FLAG_KEY : 0;
106 | //pkt.flags |= AV_PKT_FLAG_KEY;
107 | pkt.stream_index = pst->index;
108 | pkt.data = (uint8_t*)p;
109 | pkt.size = len;
110 |
111 | #if PTS_DTS_IS_CORRECT == 1
112 | pkt.dts = dts;
113 | pkt.pts = pts;
114 | #else
115 | pkt.dts = AV_NOPTS_VALUE;
116 | pkt.pts = AV_NOPTS_VALUE;
117 | #endif
118 | // TODO: mark or unmark the log
119 | //fprintf(stderr, "dts=%lld, pts=%lld\n",dts,pts);
120 | // av_write_frame( fc, &pkt );
121 | }
122 | av_interleaved_write_frame( fc, &pkt );
123 | }
124 |
125 | void h264_file_write_audio_frame(AVFormatContext *fc, AVCodecContext *pAudioCodecContext ,int vStreamIdx, const void* pData, int vDataLen, int64_t dts, int64_t pts )
126 | {
127 | int vRet=0;
128 | AVStream *pst = NULL;
129 | AVPacket pkt;
130 |
131 | if ( 0 > vVideoStreamIdx )
132 | return;
133 |
134 | // may be audio or video
135 | pst = fc->streams[ vStreamIdx ];
136 |
137 | // Init packet
138 | av_init_packet( &pkt );
139 |
140 | if(vStreamIdx==vAudioStreamIdx)
141 | {
142 | int bIsADTSAAS=0, vRedudantHeaderOfAAC=0;
143 | tAACADTSHeaderInfo vxADTSHeader={0};
144 | uint8_t *pHeader = (uint8_t *)pData;
145 |
146 | bIsADTSAAS = [AudioUtilities parseAACADTSHeader:pHeader ToHeader:(tAACADTSHeaderInfo *) &vxADTSHeader];
147 | // If header has the syncword of adts_fixed_header
148 | // syncword = 0xFFF
149 | if(bIsADTSAAS)
150 | {
151 | vRedudantHeaderOfAAC = 7;
152 | }
153 | else
154 | {
155 | vRedudantHeaderOfAAC = 0;
156 | }
157 |
158 | #if 0
159 | int gotFrame=0, len=0;
160 |
161 | AVFrame vxAVFrame1={0};
162 | AVFrame *pAVFrame1 = &vxAVFrame1;
163 |
164 | av_init_packet(&AudioPacket);
165 | av_frame_unref(pAVFrame1);
166 |
167 | if(bIsADTSAAS)
168 | {
169 | AudioPacket.size = vDataLen-vRedudantHeaderOfAAC;
170 | AudioPacket.data = pHeader+vRedudantHeaderOfAAC;
171 | }
172 | else
173 | {
174 | // This will produce error message
175 | // "malformated aac bitstream, use -absf aac_adtstoasc"
176 | AudioPacket.size = vDataLen;
177 | AudioPacket.data = pHeader;
178 | }
179 | // Decode from input format to PCM
180 | len = avcodec_decode_audio4(pAudioCodecContext, pAVFrame1, &gotFrame, &AudioPacket);
181 |
182 | // Encode from PCM to AAC
183 | vRet = avcodec_encode_audio2(pAudioOutputCodecContext, &pkt, pAVFrame1, &gotFrame);
184 | if(vRet!=0)
185 | NSLog(@"avcodec_encode_audio2 fail");
186 | pkt.stream_index = vStreamIdx;//pst->index;
187 |
188 | #else
189 |
190 | // This will produce error message
191 | // "malformated aac bitstream, use -absf aac_adtstoasc"
192 | pkt.size = vDataLen-vRedudantHeaderOfAAC;
193 | pkt.data = pHeader+vRedudantHeaderOfAAC;
194 | pkt.stream_index = vStreamIdx;//pst->index;
195 | pkt.flags |= AV_PKT_FLAG_KEY;
196 |
197 | pkt.pts = pts;
198 | pkt.dts = dts;
199 |
200 | #endif
201 | // pkt.dts = AV_NOPTS_VALUE;
202 | // pkt.pts = AV_NOPTS_VALUE;
203 | vRet = av_interleaved_write_frame( fc, &pkt );
204 | if(vRet!=0)
205 | NSLog(@"av_interleaved_write_frame for audio fail");
206 | }
207 | }
208 |
209 |
210 | void h264_file_write_frame2(AVFormatContext *fc, int vStreamIdx, AVPacket *pPkt )
211 | {
212 | av_interleaved_write_frame( fc, pPkt );
213 | }
214 |
215 |
216 | int h264_file_create(const char *pFilePath, AVFormatContext *fc, AVCodecContext *pCodecCtx,AVCodecContext *pAudioCodecCtx, double fps, void *p, int len )
217 | {
218 | int vRet=0;
219 | AVOutputFormat *of=NULL;
220 | AVStream *pst=NULL, *pst2=NULL;
221 | AVCodecContext *pcc=NULL, *pAudioOutputCodecContext=NULL;
222 |
223 | av_register_all();
224 | av_log_set_level(AV_LOG_VERBOSE);
225 |
226 | if(!pFilePath)
227 | {
228 | fprintf(stderr, "FilePath no exist");
229 | return -1;
230 | }
231 |
232 | if(!fc)
233 | {
234 | fprintf(stderr, "AVFormatContext no exist");
235 | return -1;
236 | }
237 | fprintf(stderr, "file=%s\n",pFilePath);
238 |
239 | // Create container
240 | of = fc->oformat;
241 | strcpy( fc->filename, pFilePath );
242 |
243 | // Add video stream
244 | pst = avformat_new_stream( fc, 0 );
245 | vVideoStreamIdx = pst->index;
246 | NSLog(@"Video Stream:%d",vVideoStreamIdx);
247 |
248 | pcc = avcodec_alloc_context3(NULL);
249 |
250 | // Save the stream as origin setting without convert
251 | pcc->codec_type = pCodecCtx->codec_type;
252 | pcc->codec_id = pCodecCtx->codec_id;
253 | pcc->bit_rate = pCodecCtx->bit_rate;
254 | pcc->width = pCodecCtx->width;
255 | pcc->height = pCodecCtx->height;
256 |
257 | #if PTS_DTS_IS_CORRECT == 1
258 | pcc->time_base.num = pCodecCtx->time_base.num;
259 | pcc->time_base.den = pCodecCtx->time_base.den;
260 | pcc->ticks_per_frame = pCodecCtx->ticks_per_frame;
261 |
262 | NSLog(@"time_base, num=%d, den=%d, fps should be %g",\
263 | pcc->time_base.num, pcc->time_base.den, \
264 | (1.0/ av_q2d(pCodecCtx->time_base)/pcc->ticks_per_frame));
265 | #else
266 | if(fps==0)
267 | {
268 | double fps=0.0;
269 | AVRational pTimeBase;
270 | pTimeBase.num = pCodecCtx->time_base.num;
271 | pTimeBase.den = pCodecCtx->time_base.den;
272 | fps = 1.0/ av_q2d(pCodecCtx->time_base)/ FFMAX(pCodecCtx->ticks_per_frame, 1);
273 | NSLog(@"fps_method(tbc): 1/av_q2d()=%g",fps);
274 | pcc->time_base.num = 1;
275 | pcc->time_base.den = fps;
276 | }
277 | else
278 | {
279 | pcc->time_base.num = 1;
280 | pcc->time_base.den = fps;
281 | }
282 | #endif
283 |
284 | // reference ffmpeg\libavformat\utils.c
285 |
286 | // For SPS and PPS in avcC container
287 | pcc->extradata = av_malloc(sizeof(uint8_t)*pCodecCtx->extradata_size);
288 | memcpy(pcc->extradata, pCodecCtx->extradata, pCodecCtx->extradata_size);
289 | pcc->extradata_size = pCodecCtx->extradata_size;
290 |
291 | avcodec_parameters_from_context(pst->codecpar, pcc);
292 |
293 | // Add audio stream
294 | if(pAudioCodecCtx)
295 | {
296 |
297 | pst2 = avformat_new_stream( fc, 0);
298 | vAudioStreamIdx = pst2->index;
299 |
300 | pAudioOutputCodecContext = avcodec_alloc_context3(NULL);
301 |
302 | pAudioOutputCodecContext->codec_type = pAudioCodecCtx->codec_type;//AVMEDIA_TYPE_AUDIO;
303 | pAudioOutputCodecContext->codec_id = pAudioCodecCtx->codec_id;//AV_CODEC_ID_AAC;
304 |
305 | // Copy the codec attributes
306 | pAudioOutputCodecContext->sample_fmt = pAudioCodecCtx->sample_fmt;
307 | pAudioOutputCodecContext->sample_rate = pAudioCodecCtx->sample_rate;
308 | pAudioOutputCodecContext->bit_rate = pAudioCodecCtx->sample_rate * pAudioCodecCtx->bits_per_coded_sample; //12000
309 |
310 | pAudioOutputCodecContext->channels = pAudioCodecCtx->channels;
311 | pAudioOutputCodecContext->channel_layout = pAudioCodecCtx->channel_layout;
312 |
313 | pAudioOutputCodecContext->bits_per_coded_sample = pAudioCodecCtx->bits_per_coded_sample;
314 | pAudioOutputCodecContext->profile = pAudioCodecCtx->profile;
315 |
316 | avcodec_parameters_from_context(pst2->codecpar, pAudioOutputCodecContext);
317 |
318 | NSLog(@"[Audio] Stream:%d",vAudioStreamIdx);
319 | NSLog(@"[Audio] bits_per_coded_sample=%d",pAudioCodecCtx->bits_per_coded_sample);
320 | NSLog(@"[Audio] profile:%d, sample_rate:%d, channles:%d", pAudioOutputCodecContext->profile, pAudioOutputCodecContext->sample_rate, pAudioOutputCodecContext->channels);
321 |
322 | }
323 |
324 | if(fc->oformat->flags & AVFMT_GLOBALHEADER)
325 | {
326 | pcc->flags |= CODEC_FLAG_GLOBAL_HEADER;
327 | if(pAudioOutputCodecContext)
328 | pAudioOutputCodecContext->flags |= CODEC_FLAG_GLOBAL_HEADER;
329 | }
330 |
331 | if ( !( fc->oformat->flags & AVFMT_NOFILE ) )
332 | {
333 | vRet = avio_open( &fc->pb, fc->filename, AVIO_FLAG_WRITE );
334 | if(vRet!=0)
335 | {
336 | NSLog(@"avio_open(%s) error", fc->filename);
337 | }
338 | }
339 |
340 | // dump format in console
341 | av_dump_format(fc, 0, pFilePath, 1);
342 |
343 | vRet = avformat_write_header( fc, NULL );
344 | if(vRet==0) {
345 | return true;
346 | }
347 | else {
348 | NSLog(@"Fail, vRet=%d", vRet);
349 | return false;
350 | }
351 |
352 | }
353 |
--------------------------------------------------------------------------------
/Classes/Mp4_Save.c:
--------------------------------------------------------------------------------
1 | //
2 | // H264_Save.c
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 13/5/24.
6 | //
7 | //
8 |
9 | // Reference ffmpeg\doc\examples\muxing.c
10 | #include
11 | #include "libavcodec/avcodec.h"
12 | #include "libavformat/avformat.h"
13 | #include "Mp4_Save.h"
14 | //#include "libavformat/avio.h"
15 | //#import "AudioUtilities.h"
16 |
17 | int vVideoStreamIdx = -1, vAudioStreamIdx = -1, waitkey = 1;
18 |
19 |
20 |
21 |
22 | // Reference : https://github.com/mstorsjo/libav/blob/fdk-aac/libavcodec/aacadtsdec.c
23 | typedef struct AACADTSHeaderInfo {
24 |
25 | // == adts_fixed_header ==
26 | uint16_t syncword; // 12 bslbf
27 | uint8_t ID; // 1 bslbf
28 | uint8_t layer; // 2 uimsbf
29 | uint8_t protection_absent; // 1 bslbf
30 | uint8_t profile; // 2 uimsbf
31 | uint8_t sampling_frequency_index; // 4 uimsbf
32 | uint8_t private_bit; // 1 bslbf
33 | uint8_t channel_configuration; // 3 uimsbf
34 | uint8_t original_copy; // 1 bslbf
35 | uint8_t home; // 1 bslbf
36 |
37 | // == adts_variable_header ==
38 | uint8_t copyright_identification_bit; //1 bslbf
39 | uint8_t copyright_identification_start; //1 bslbf
40 | uint16_t frame_length; //13 bslbf
41 | uint16_t adts_buffer_fullness; //11 bslbf
42 | uint8_t number_of_raw_data_blocks_in_frame; //2 uimsfb
43 |
44 | } tAACADTSHeaderInfo;
45 |
46 | int parseAACADTSHeader(unsigned char *pInput,tAACADTSHeaderInfo *pADTSHeader)
47 | {
48 | int bHasSyncword = 0;
49 | if(pADTSHeader==NULL)
50 | return 0;
51 |
52 | // == adts_fixed_header ==
53 | // syncword; 12 bslbf should be 0x1111 1111 1111
54 | if(pInput[0]==0xFF)
55 | {
56 | if((pInput[1]&0xF0)==0xF0)
57 | {
58 | bHasSyncword = 1;
59 | }
60 | }
61 |
62 | if(!bHasSyncword) return 0;
63 |
64 | //== adts_fixed_header ==
65 | // uint16_t syncword; // 12 bslbf
66 | // uint8_t ID; // 1 bslbf
67 | // uint8_t layer; // 2 uimsbf
68 | // uint8_t protection_absent; // 1 bslbf
69 | // uint8_t profile; // 2 uimsbf
70 | // uint8_t sampling_frequency_index; // 4 uimsbf
71 | // uint8_t private_bit; // 1 bslbf
72 | // uint8_t channel_configuration; // 3 uimsbf
73 | // uint8_t original_copy; // 1 bslbf
74 | // uint8_t home; // 1 bslbf
75 |
76 | pADTSHeader->syncword = 0x0fff;
77 | pADTSHeader->ID = (pInput[1]&0x08)>>3;
78 | pADTSHeader->layer = (pInput[1]&0x06)>>2;
79 | pADTSHeader->protection_absent = pInput[1]&0x01;
80 |
81 | pADTSHeader->profile = (pInput[2]&0xC0)>>6;
82 | pADTSHeader->sampling_frequency_index = (pInput[2]&0x3C)>>2;
83 | pADTSHeader->private_bit = (pInput[2]&0x02)>>1;
84 |
85 | pADTSHeader->channel_configuration = ((pInput[2]&0x01)<<2) + ((pInput[3]&0xC0)>>6);
86 | pADTSHeader->original_copy = ((pInput[3]&0x20)>>5);
87 | pADTSHeader->home = ((pInput[3]&0x10)>>4);
88 |
89 |
90 | // == adts_variable_header ==
91 | // copyright_identification_bit; 1 bslbf
92 | // copyright_identification_start; 1 bslbf
93 | // frame_length; 13 bslbf
94 | // adts_buffer_fullness; 11 bslbf
95 | // number_of_raw_data_blocks_in_frame; 2 uimsfb
96 |
97 | pADTSHeader->copyright_identification_bit = ((pInput[3]&0x08)>>3);
98 | pADTSHeader->copyright_identification_start = ((pInput[3]&0x04)>>2);
99 | pADTSHeader->frame_length = ((pInput[3]&0x03)<<11) + ((pInput[4])<<3) + ((pInput[5]&0xE0)>>5);
100 | pADTSHeader->adts_buffer_fullness = ((pInput[5]&0x1F)<<6) + ((pInput[6]&0xFC)>>2);
101 | pADTSHeader->number_of_raw_data_blocks_in_frame = ((pInput[6]&0x03));
102 |
103 |
104 | // We can't use bits mask to convert byte array to ADTS structure.
105 | // http://mjfrazer.org/mjfrazer/bitfields/
106 | // Big endian machines pack bitfields from most significant byte to least.
107 | // Little endian machines pack bitfields from least significant byte to most.
108 | // Direct bits mapping is hard.... we should implement a parser ourself.
109 |
110 | return 1;
111 | }
112 |
113 |
114 | // < 0 = error
115 | // 0 = I-Frame
116 | // 1 = P-Frame
117 | // 2 = B-Frame
118 | // 3 = S-Frame
119 | static int getVopType( const void *p, int len )
120 | {
121 |
122 | if ( !p || 6 >= len )
123 | {
124 | fprintf(stderr, "getVopType() error");
125 | return -1;
126 | }
127 |
128 | unsigned char *b = (unsigned char*)p;
129 |
130 | // Verify VOP id
131 | if ( 0xb6 == *b )
132 | {
133 | b++;
134 | return ( *b & 0xc0 ) >> 6;
135 | } // end if
136 |
137 | switch( *b )
138 | {
139 | case 0x65 : return 0;
140 | case 0x61 : return 1;
141 | case 0x01 : return 2;
142 | } // end switch
143 |
144 | return -1;
145 | }
146 |
147 | void h264_file_close(AVFormatContext *fc)
148 | {
149 | if ( !fc )
150 | return;
151 |
152 | av_write_trailer( fc );
153 |
154 | if ( fc->oformat && !( fc->oformat->flags & AVFMT_NOFILE ) && fc->pb )
155 | avio_close( fc->pb );
156 |
157 | av_free( fc );
158 | }
159 |
160 |
161 |
162 | // Since the data may not from ffmpeg as AVPacket format
163 | void h264_file_write_frame(AVFormatContext *fc, int vStreamIdx, const void* p, int len, int64_t dts, int64_t pts )
164 | {
165 | AVStream *pst = NULL;
166 | AVPacket pkt;
167 |
168 | if ( 0 > vVideoStreamIdx )
169 | return;
170 |
171 | // may be audio or video
172 | pst = fc->streams[ vStreamIdx ];
173 |
174 | // Init packet
175 | av_init_packet( &pkt );
176 |
177 | if(vStreamIdx ==vVideoStreamIdx)
178 | {
179 | pkt.flags |= ( 0 >= getVopType( p, len ) ) ? AV_PKT_FLAG_KEY : 0;
180 | //pkt.flags |= AV_PKT_FLAG_KEY;
181 | pkt.stream_index = pst->index;
182 | pkt.data = (uint8_t*)p;
183 | pkt.size = len;
184 |
185 | #if PTS_DTS_IS_CORRECT == 1
186 | pkt.dts = dts;
187 | pkt.pts = pts;
188 | #else
189 | pkt.dts = AV_NOPTS_VALUE;
190 | pkt.pts = AV_NOPTS_VALUE;
191 | #endif
192 | // TODO: mark or unmark the log
193 | //fprintf(stderr, "dts=%lld, pts=%lld\n",dts,pts);
194 | // av_write_frame( fc, &pkt );
195 | }
196 | av_interleaved_write_frame( fc, &pkt );
197 | }
198 |
199 | void h264_file_write_audio_frame(AVFormatContext *fc, AVCodecContext *pAudioCodecContext ,int vStreamIdx, const void* pData, int vDataLen, int64_t dts, int64_t pts )
200 | {
201 | int vRet=0;
202 | AVCodecContext *pAudioOutputCodecContext;
203 | AVStream *pst = NULL;
204 | AVPacket pkt;
205 |
206 | if ( 0 > vVideoStreamIdx )
207 | return;
208 |
209 | // may be audio or video
210 | pst = fc->streams[ vStreamIdx ];
211 | pAudioOutputCodecContext = pst->codec;
212 |
213 | // Init packet
214 | av_init_packet( &pkt );
215 |
216 | if(vStreamIdx==vAudioStreamIdx)
217 | {
218 | if(pAudioOutputCodecContext==NULL)
219 | {
220 | fprintf(stderr,"pAudioOutputCodecContext==NULL");
221 | }
222 | else
223 | {
224 | int bIsADTSAAS=0, vRedudantHeaderOfAAC=0;
225 | AVPacket AudioPacket={0};
226 | tAACADTSHeaderInfo vxADTSHeader={0};
227 | uint8_t *pHeader = (uint8_t *)pData;
228 |
229 | //bIsADTSAAS = [AudioUtilities parseAACADTSHeader:pHeader ToHeader:(tAACADTSHeaderInfo *) &vxADTSHeader];
230 | bIsADTSAAS = parseAACADTSHeader(pHeader, &vxADTSHeader);
231 | // If header has the syncword of adts_fixed_header
232 | // syncword = 0xFFF
233 | if(bIsADTSAAS)
234 | {
235 | vRedudantHeaderOfAAC = 7;
236 | }
237 | else
238 | {
239 | vRedudantHeaderOfAAC = 0;
240 | }
241 |
242 | #if 0
243 | int gotFrame=0, len=0;
244 |
245 | AVFrame vxAVFrame1={0};
246 | AVFrame *pAVFrame1 = &vxAVFrame1;
247 |
248 | av_init_packet(&AudioPacket);
249 | avcodec_get_frame_defaults(pAVFrame1);
250 |
251 | if(bIsADTSAAS)
252 | {
253 | AudioPacket.size = vDataLen-vRedudantHeaderOfAAC;
254 | AudioPacket.data = pHeader+vRedudantHeaderOfAAC;
255 | }
256 | else
257 | {
258 | // This will produce error message
259 | // "malformated aac bitstream, use -absf aac_adtstoasc"
260 | AudioPacket.size = vDataLen;
261 | AudioPacket.data = pHeader;
262 | }
263 | // Decode from input format to PCM
264 | len = avcodec_decode_audio4(pAudioCodecContext, pAVFrame1, &gotFrame, &AudioPacket);
265 |
266 | // Encode from PCM to AAC
267 | vRet = avcodec_encode_audio2(pAudioOutputCodecContext, &pkt, pAVFrame1, &gotFrame);
268 | if(vRet!=0)
269 | NSLog(@"avcodec_encode_audio2 fail");
270 | pkt.stream_index = vStreamIdx;//pst->index;
271 |
272 | #else
273 |
274 | //if(pAudioCodecContext->codec_id==AV_CODEC_ID_AAC)
275 | {
276 | // This will produce error message
277 | // "malformated aac bitstream, use -absf aac_adtstoasc"
278 | pkt.size = vDataLen-vRedudantHeaderOfAAC;
279 | pkt.data = pHeader+vRedudantHeaderOfAAC;
280 | pkt.stream_index = vStreamIdx;//pst->index;
281 | pkt.flags |= AV_PKT_FLAG_KEY;
282 |
283 | }
284 |
285 | #endif
286 | // pkt.dts = AV_NOPTS_VALUE;
287 | // pkt.pts = AV_NOPTS_VALUE;
288 | vRet = av_interleaved_write_frame( fc, &pkt );
289 | if(vRet!=0)
290 | fprintf(stderr,"av_interleaved_write_frame for audio fail");
291 | }
292 | }
293 |
294 |
295 | }
296 |
297 |
298 | void h264_file_write_frame2(AVFormatContext *fc, int vStreamIdx, AVPacket *pPkt )
299 | {
300 | av_interleaved_write_frame( fc, pPkt );
301 | }
302 |
303 |
304 | int h264_file_create(const char *pFilePath, AVFormatContext *fc, AVCodecContext *pCodecCtx,AVCodecContext *pAudioCodecCtx, double fps, void *p, int len )
305 | {
306 | int vRet=0;
307 | AVOutputFormat *of=NULL;
308 | AVStream *pst=NULL;
309 | AVCodecContext *pcc=NULL, *pAudioOutputCodecContext=NULL;
310 |
311 | avcodec_register_all();
312 | av_register_all();
313 | av_log_set_level(AV_LOG_VERBOSE);
314 |
315 | if(!pFilePath)
316 | {
317 | fprintf(stderr, "FilePath no exist");
318 | return -1;
319 | }
320 |
321 | if(!fc)
322 | {
323 | fprintf(stderr, "AVFormatContext no exist");
324 | return -1;
325 | }
326 | fprintf(stderr, "file=%s\n",pFilePath);
327 |
328 | // Create container
329 | of = av_guess_format( 0, pFilePath, 0 );
330 | fc->oformat = of;
331 | strcpy( fc->filename, pFilePath );
332 |
333 | // Add video stream
334 | pst = avformat_new_stream( fc, 0 );
335 | vVideoStreamIdx = pst->index;
336 | fprintf(stderr,"Video Stream:%d",vVideoStreamIdx);
337 |
338 | pcc = pst->codec;
339 | avcodec_get_context_defaults3( pcc, AVMEDIA_TYPE_VIDEO );
340 |
341 | // TODO: test here
342 | //*pcc = *pCodecCtx;
343 |
344 | // TODO: check ffmpeg source for "q=%d-%d", some parameter should be set before write header
345 |
346 | // Save the stream as origin setting without convert
347 | pcc->codec_type = pCodecCtx->codec_type;
348 | pcc->codec_id = pCodecCtx->codec_id;
349 | pcc->bit_rate = pCodecCtx->bit_rate;
350 | pcc->width = pCodecCtx->width;
351 | pcc->height = pCodecCtx->height;
352 |
353 | #if PTS_DTS_IS_CORRECT == 1
354 | pcc->time_base.num = pCodecCtx->time_base.num;
355 | pcc->time_base.den = pCodecCtx->time_base.den;
356 | pcc->ticks_per_frame = pCodecCtx->ticks_per_frame;
357 | // pcc->frame_bits= pCodecCtx->frame_bits;
358 | // pcc->frame_size= pCodecCtx->frame_size;
359 | // pcc->frame_number= pCodecCtx->frame_number;
360 |
361 | // pcc->pts_correction_last_dts = pCodecCtx->pts_correction_last_dts;
362 | // pcc->pts_correction_last_pts = pCodecCtx->pts_correction_last_pts;
363 |
364 | NSLog(@"time_base, num=%d, den=%d, fps should be %g",\
365 | pcc->time_base.num, pcc->time_base.den, \
366 | (1.0/ av_q2d(pCodecCtx->time_base)/pcc->ticks_per_frame));
367 | #else
368 | if(fps==0)
369 | {
370 | double fps=0.0;
371 | AVRational pTimeBase;
372 | pTimeBase.num = pCodecCtx->time_base.num;
373 | pTimeBase.den = pCodecCtx->time_base.den;
374 | fps = 1.0/ av_q2d(pCodecCtx->time_base)/ FFMAX(pCodecCtx->ticks_per_frame, 1);
375 | fprintf(stderr,"fps_method(tbc): 1/av_q2d()=%g",fps);
376 | pcc->time_base.num = 1;
377 | pcc->time_base.den = fps;
378 | }
379 | else
380 | {
381 | pcc->time_base.num = 1;
382 | pcc->time_base.den = fps;
383 | }
384 | #endif
385 | // reference ffmpeg\libavformat\utils.c
386 |
387 | // For SPS and PPS in avcC container
388 | pcc->extradata = malloc(sizeof(uint8_t)*pCodecCtx->extradata_size);
389 | memcpy(pcc->extradata, pCodecCtx->extradata, pCodecCtx->extradata_size);
390 | pcc->extradata_size = pCodecCtx->extradata_size;
391 |
392 | // For Audio stream
393 | if(pAudioCodecCtx)
394 | {
395 | AVCodec *pAudioCodec=NULL;
396 | AVStream *pst2=NULL;
397 | pAudioCodec = avcodec_find_encoder(AV_CODEC_ID_AAC);
398 |
399 | // Add audio stream
400 | pst2 = avformat_new_stream( fc, pAudioCodec );
401 | vAudioStreamIdx = pst2->index;
402 | pAudioOutputCodecContext = pst2->codec;
403 | avcodec_get_context_defaults3( pAudioOutputCodecContext, pAudioCodec );
404 | fprintf(stderr,"Audio Stream:%d",vAudioStreamIdx);
405 | fprintf(stderr,"pAudioCodecCtx->bits_per_coded_sample=%d",pAudioCodecCtx->bits_per_coded_sample);
406 |
407 | pAudioOutputCodecContext->codec_type = AVMEDIA_TYPE_AUDIO;
408 | pAudioOutputCodecContext->codec_id = AV_CODEC_ID_AAC;
409 |
410 | // Copy the codec attributes
411 | pAudioOutputCodecContext->channels = pAudioCodecCtx->channels;
412 | pAudioOutputCodecContext->channel_layout = pAudioCodecCtx->channel_layout;
413 | pAudioOutputCodecContext->sample_rate = pAudioCodecCtx->sample_rate;
414 | pAudioOutputCodecContext->bit_rate = 12000;//pAudioCodecCtx->sample_rate * pAudioCodecCtx->bits_per_coded_sample;
415 | pAudioOutputCodecContext->bits_per_coded_sample = pAudioCodecCtx->bits_per_coded_sample;
416 | pAudioOutputCodecContext->profile = pAudioCodecCtx->profile;
417 | //FF_PROFILE_AAC_LOW;
418 | // pAudioCodecCtx->bit_rate;
419 |
420 | // AV_SAMPLE_FMT_U8P, AV_SAMPLE_FMT_S16P
421 | //pAudioOutputCodecContext->sample_fmt = AV_SAMPLE_FMT_FLTP;//pAudioCodecCtx->sample_fmt;
422 | pAudioOutputCodecContext->sample_fmt = pAudioCodecCtx->sample_fmt;
423 | //pAudioOutputCodecContext->sample_fmt = AV_SAMPLE_FMT_U8;
424 |
425 | pAudioOutputCodecContext->sample_aspect_ratio = pAudioCodecCtx->sample_aspect_ratio;
426 |
427 | pAudioOutputCodecContext->time_base.num = pAudioCodecCtx->time_base.num;
428 | pAudioOutputCodecContext->time_base.den = pAudioCodecCtx->time_base.den;
429 | pAudioOutputCodecContext->ticks_per_frame = pAudioCodecCtx->ticks_per_frame;
430 | pAudioOutputCodecContext->frame_size = 1024;
431 |
432 | fprintf(stderr,"profile:%d, sample_rate:%d, channles:%d", pAudioOutputCodecContext->profile, pAudioOutputCodecContext->sample_rate, pAudioOutputCodecContext->channels);
433 | AVDictionary *opts = NULL;
434 | av_dict_set(&opts, "strict", "experimental", 0);
435 |
436 | if (avcodec_open2(pAudioOutputCodecContext, pAudioCodec, &opts) < 0) {
437 | fprintf(stderr, "\ncould not open codec\n");
438 | }
439 |
440 | av_dict_free(&opts);
441 |
442 | #if 0
443 | // For Audio, this part is no need
444 | if(pAudioCodecCtx->extradata_size!=0)
445 | {
446 | NSLog(@"extradata_size !=0");
447 | pAudioOutputCodecContext->extradata = malloc(sizeof(uint8_t)*pAudioCodecCtx->extradata_size);
448 | memcpy(pAudioOutputCodecContext->extradata, pAudioCodecCtx->extradata, pAudioCodecCtx->extradata_size);
449 | pAudioOutputCodecContext->extradata_size = pAudioCodecCtx->extradata_size;
450 | }
451 | else
452 | {
453 | // For WMA test only
454 | pAudioOutputCodecContext->extradata_size = 0;
455 | NSLog(@"extradata_size ==0");
456 | }
457 | #endif
458 | }
459 |
460 | if(fc->oformat->flags & AVFMT_GLOBALHEADER)
461 | {
462 | pcc->flags |= CODEC_FLAG_GLOBAL_HEADER;
463 | pAudioOutputCodecContext->flags |= CODEC_FLAG_GLOBAL_HEADER;
464 | }
465 |
466 | if ( !( fc->oformat->flags & AVFMT_NOFILE ) )
467 | {
468 | vRet = avio_open( &fc->pb, fc->filename, AVIO_FLAG_WRITE );
469 | if(vRet!=0)
470 | {
471 | fprintf(stderr,"avio_open(%s) error", fc->filename);
472 | }
473 | }
474 |
475 | // dump format in console
476 | av_dump_format(fc, 0, pFilePath, 1);
477 |
478 | vRet = avformat_write_header( fc, NULL );
479 | if(vRet==0)
480 | return 1;
481 | else
482 | return 0;
483 | }
484 |
485 |
486 |
487 |
488 | /*
489 | * qt-faststart.c, v0.2
490 | * by Mike Melanson (melanson@pcisys.net)
491 | * This file is placed in the public domain. Use the program however you
492 | * see fit.
493 | *
494 | * This utility rearranges a Quicktime file such that the moov atom
495 | * is in front of the data, thus facilitating network streaming.
496 | *
497 | * To compile this program, start from the base directory from which you
498 | * are building FFmpeg and type:
499 | * make tools/qt-faststart
500 | * The qt-faststart program will be built in the tools/ directory. If you
501 | * do not build the program in this manner, correct results are not
502 | * guaranteed, particularly on 64-bit platforms.
503 | * Invoke the program with:
504 | * qt-faststart
505 | *
506 | * Notes: Quicktime files can come in many configurations of top-level
507 | * atoms. This utility stipulates that the very last atom in the file needs
508 | * to be a moov atom. When given such a file, this utility will rearrange
509 | * the top-level atoms by shifting the moov atom from the back of the file
510 | * to the front, and patch the chunk offsets along the way. This utility
511 | * presently only operates on uncompressed moov atoms.
512 | */
513 |
514 | #include
515 | #include
516 | #include
517 | #include
518 |
519 | #ifdef __MINGW32__
520 | #define fseeko(x, y, z) fseeko64(x, y, z)
521 | #define ftello(x) ftello64(x)
522 | #elif defined(_WIN32)
523 | #define fseeko(x, y, z) _fseeki64(x, y, z)
524 | #define ftello(x) _ftelli64(x)
525 | #endif
526 |
527 | #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
528 |
529 | #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
530 |
531 | #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
532 | (((uint8_t*)(x))[1] << 16) | \
533 | (((uint8_t*)(x))[2] << 8) | \
534 | ((uint8_t*)(x))[3])
535 |
536 | #define BE_64(x) (((uint64_t)(((uint8_t*)(x))[0]) << 56) | \
537 | ((uint64_t)(((uint8_t*)(x))[1]) << 48) | \
538 | ((uint64_t)(((uint8_t*)(x))[2]) << 40) | \
539 | ((uint64_t)(((uint8_t*)(x))[3]) << 32) | \
540 | ((uint64_t)(((uint8_t*)(x))[4]) << 24) | \
541 | ((uint64_t)(((uint8_t*)(x))[5]) << 16) | \
542 | ((uint64_t)(((uint8_t*)(x))[6]) << 8) | \
543 | ((uint64_t)( (uint8_t*)(x))[7]))
544 |
545 | #define BE_FOURCC(ch0, ch1, ch2, ch3) \
546 | ( (uint32_t)(unsigned char)(ch3) | \
547 | ((uint32_t)(unsigned char)(ch2) << 8) | \
548 | ((uint32_t)(unsigned char)(ch1) << 16) | \
549 | ((uint32_t)(unsigned char)(ch0) << 24) )
550 |
551 | #define QT_ATOM BE_FOURCC
552 | /* top level atoms */
553 | #define FREE_ATOM QT_ATOM('f', 'r', 'e', 'e')
554 | #define JUNK_ATOM QT_ATOM('j', 'u', 'n', 'k')
555 | #define MDAT_ATOM QT_ATOM('m', 'd', 'a', 't')
556 | #define MOOV_ATOM QT_ATOM('m', 'o', 'o', 'v')
557 | #define PNOT_ATOM QT_ATOM('p', 'n', 'o', 't')
558 | #define SKIP_ATOM QT_ATOM('s', 'k', 'i', 'p')
559 | #define WIDE_ATOM QT_ATOM('w', 'i', 'd', 'e')
560 | #define PICT_ATOM QT_ATOM('P', 'I', 'C', 'T')
561 | #define FTYP_ATOM QT_ATOM('f', 't', 'y', 'p')
562 | #define UUID_ATOM QT_ATOM('u', 'u', 'i', 'd')
563 |
564 | #define CMOV_ATOM QT_ATOM('c', 'm', 'o', 'v')
565 | #define STCO_ATOM QT_ATOM('s', 't', 'c', 'o')
566 | #define CO64_ATOM QT_ATOM('c', 'o', '6', '4')
567 |
568 | #define ATOM_PREAMBLE_SIZE 8
569 | #define COPY_BUFFER_SIZE 33554432
570 |
571 |
572 | //int main(int argc, char *argv[])
573 | int MoveMP4MoovToHeader(char *pSrc, char *pDst)
574 | {
575 | FILE *infile = NULL;
576 | FILE *outfile = NULL;
577 | unsigned char atom_bytes[ATOM_PREAMBLE_SIZE];
578 | uint32_t atom_type = 0;
579 | uint64_t atom_size = 0;
580 | uint64_t atom_offset = 0;
581 | uint64_t last_offset;
582 | unsigned char *moov_atom = NULL;
583 | unsigned char *ftyp_atom = NULL;
584 | uint64_t moov_atom_size;
585 | uint64_t ftyp_atom_size = 0;
586 | uint64_t i, j;
587 | uint32_t offset_count;
588 | uint64_t current_offset;
589 | int64_t start_offset = 0;
590 | unsigned char *copy_buffer = NULL;
591 | int bytes_to_copy;
592 |
593 | if((pSrc==NULL) || (pDst==NULL)) return 0 ;
594 |
595 | // if (argc != 3) {
596 | // printf("Usage: qt-faststart \n");
597 | // return 0;
598 | // }
599 | //
600 | // if (!strcmp(argv[1], argv[2])) {
601 | // fprintf(stderr, "input and output files need to be different\n");
602 | // return 1;
603 | // }
604 |
605 | infile = fopen(pSrc, "rb");
606 | if (!infile) {
607 | perror(pSrc);
608 | goto error_out;
609 | }
610 |
611 | /* traverse through the atoms in the file to make sure that 'moov' is
612 | * at the end */
613 | while (!feof(infile)) {
614 | if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) {
615 | break;
616 | }
617 | atom_size = (uint32_t) BE_32(&atom_bytes[0]);
618 | atom_type = BE_32(&atom_bytes[4]);
619 |
620 | /* keep ftyp atom */
621 | if (atom_type == FTYP_ATOM) {
622 | ftyp_atom_size = atom_size;
623 | free(ftyp_atom);
624 | ftyp_atom = malloc(ftyp_atom_size);
625 | if (!ftyp_atom) {
626 | printf("could not allocate %"PRIu64" bytes for ftyp atom\n",
627 | atom_size);
628 | goto error_out;
629 | }
630 | if ( fseeko(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR)
631 | || fread(ftyp_atom, atom_size, 1, infile) != 1
632 | || (start_offset = ftello(infile))<0) {
633 | perror(pSrc);
634 | goto error_out;
635 | }
636 | } else {
637 | int ret;
638 | /* 64-bit special case */
639 | if (atom_size == 1) {
640 | if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) {
641 | break;
642 | }
643 | atom_size = BE_64(&atom_bytes[0]);
644 | ret = fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE * 2, SEEK_CUR);
645 | } else {
646 | ret = fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE, SEEK_CUR);
647 | }
648 | if(ret) {
649 | perror(pSrc);
650 | goto error_out;
651 | }
652 | }
653 | printf("%c%c%c%c %10"PRIu64" %"PRIu64"\n",
654 | (atom_type >> 24) & 255,
655 | (atom_type >> 16) & 255,
656 | (atom_type >> 8) & 255,
657 | (atom_type >> 0) & 255,
658 | atom_offset,
659 | atom_size);
660 | if ((atom_type != FREE_ATOM) &&
661 | (atom_type != JUNK_ATOM) &&
662 | (atom_type != MDAT_ATOM) &&
663 | (atom_type != MOOV_ATOM) &&
664 | (atom_type != PNOT_ATOM) &&
665 | (atom_type != SKIP_ATOM) &&
666 | (atom_type != WIDE_ATOM) &&
667 | (atom_type != PICT_ATOM) &&
668 | (atom_type != UUID_ATOM) &&
669 | (atom_type != FTYP_ATOM)) {
670 | printf("encountered non-QT top-level atom (is this a QuickTime file?)\n");
671 | break;
672 | }
673 | atom_offset += atom_size;
674 |
675 | /* The atom header is 8 (or 16 bytes), if the atom size (which
676 | * includes these 8 or 16 bytes) is less than that, we won't be
677 | * able to continue scanning sensibly after this atom, so break. */
678 | if (atom_size < 8)
679 | break;
680 | }
681 |
682 | if (atom_type != MOOV_ATOM) {
683 | printf("last atom in file was not a moov atom\n");
684 | free(ftyp_atom);
685 | fclose(infile);
686 | return 0;
687 | }
688 |
689 | /* moov atom was, in fact, the last atom in the chunk; load the whole
690 | * moov atom */
691 | if (fseeko(infile, -atom_size, SEEK_END)) {
692 | perror(pSrc);
693 | goto error_out;
694 | }
695 | last_offset = ftello(infile);
696 | moov_atom_size = atom_size;
697 | moov_atom = malloc(moov_atom_size);
698 | if (!moov_atom) {
699 | printf("could not allocate %"PRIu64" bytes for moov atom\n", atom_size);
700 | goto error_out;
701 | }
702 | if (fread(moov_atom, atom_size, 1, infile) != 1) {
703 | perror(pSrc);
704 | goto error_out;
705 | }
706 |
707 | /* this utility does not support compressed atoms yet, so disqualify
708 | * files with compressed QT atoms */
709 | if (BE_32(&moov_atom[12]) == CMOV_ATOM) {
710 | printf("this utility does not support compressed moov atoms yet\n");
711 | goto error_out;
712 | }
713 |
714 | /* close; will be re-opened later */
715 | fclose(infile);
716 | infile = NULL;
717 |
718 | /* crawl through the moov chunk in search of stco or co64 atoms */
719 | for (i = 4; i < moov_atom_size - 4; i++) {
720 | atom_type = BE_32(&moov_atom[i]);
721 | if (atom_type == STCO_ATOM) {
722 | printf(" patching stco atom...\n");
723 | atom_size = (uint32_t)BE_32(&moov_atom[i - 4]);
724 | if (i + atom_size - 4 > moov_atom_size) {
725 | printf(" bad atom size\n");
726 | goto error_out;
727 | }
728 | offset_count = BE_32(&moov_atom[i + 8]);
729 | if (i + 12LL + offset_count * 4LL > moov_atom_size) {
730 | printf(" bad atom size\n");
731 | goto error_out;
732 | }
733 | for (j = 0; j < offset_count; j++) {
734 | current_offset = (uint32_t)BE_32(&moov_atom[i + 12 + j * 4]);
735 | current_offset += moov_atom_size;
736 | moov_atom[i + 12 + j * 4 + 0] = (current_offset >> 24) & 0xFF;
737 | moov_atom[i + 12 + j * 4 + 1] = (current_offset >> 16) & 0xFF;
738 | moov_atom[i + 12 + j * 4 + 2] = (current_offset >> 8) & 0xFF;
739 | moov_atom[i + 12 + j * 4 + 3] = (current_offset >> 0) & 0xFF;
740 | }
741 | i += atom_size - 4;
742 | } else if (atom_type == CO64_ATOM) {
743 | printf(" patching co64 atom...\n");
744 | atom_size = (uint32_t)BE_32(&moov_atom[i - 4]);
745 | if (i + atom_size - 4 > moov_atom_size) {
746 | printf(" bad atom size\n");
747 | goto error_out;
748 | }
749 | offset_count = BE_32(&moov_atom[i + 8]);
750 | if (i + 12LL + offset_count * 8LL > moov_atom_size) {
751 | printf(" bad atom size\n");
752 | goto error_out;
753 | }
754 | for (j = 0; j < offset_count; j++) {
755 | current_offset = BE_64(&moov_atom[i + 12 + j * 8]);
756 | current_offset += moov_atom_size;
757 | moov_atom[i + 12 + j * 8 + 0] = (current_offset >> 56) & 0xFF;
758 | moov_atom[i + 12 + j * 8 + 1] = (current_offset >> 48) & 0xFF;
759 | moov_atom[i + 12 + j * 8 + 2] = (current_offset >> 40) & 0xFF;
760 | moov_atom[i + 12 + j * 8 + 3] = (current_offset >> 32) & 0xFF;
761 | moov_atom[i + 12 + j * 8 + 4] = (current_offset >> 24) & 0xFF;
762 | moov_atom[i + 12 + j * 8 + 5] = (current_offset >> 16) & 0xFF;
763 | moov_atom[i + 12 + j * 8 + 6] = (current_offset >> 8) & 0xFF;
764 | moov_atom[i + 12 + j * 8 + 7] = (current_offset >> 0) & 0xFF;
765 | }
766 | i += atom_size - 4;
767 | }
768 | }
769 |
770 | /* re-open the input file and open the output file */
771 | infile = fopen(pSrc, "rb");
772 | if (!infile) {
773 | perror(pSrc);
774 | goto error_out;
775 | }
776 |
777 | if (start_offset > 0) { /* seek after ftyp atom */
778 | if (fseeko(infile, start_offset, SEEK_SET)) {
779 | perror(pSrc);
780 | goto error_out;
781 | }
782 |
783 | last_offset -= start_offset;
784 | }
785 |
786 | outfile = fopen(pDst, "wb");
787 | if (!outfile) {
788 | perror(pDst);
789 | goto error_out;
790 | }
791 |
792 | /* dump the same ftyp atom */
793 | if (ftyp_atom_size > 0) {
794 | printf(" writing ftyp atom...\n");
795 | if (fwrite(ftyp_atom, ftyp_atom_size, 1, outfile) != 1) {
796 | perror(pDst);
797 | goto error_out;
798 | }
799 | }
800 |
801 | /* dump the new moov atom */
802 | printf(" writing moov atom...\n");
803 | if (fwrite(moov_atom, moov_atom_size, 1, outfile) != 1) {
804 | perror(pDst);
805 | goto error_out;
806 | }
807 |
808 | /* copy the remainder of the infile, from offset 0 -> last_offset - 1 */
809 | bytes_to_copy = FFMIN(COPY_BUFFER_SIZE, last_offset);
810 | copy_buffer = malloc(bytes_to_copy);
811 | if (!copy_buffer) {
812 | printf("could not allocate %d bytes for copy_buffer\n", bytes_to_copy);
813 | goto error_out;
814 | }
815 | printf(" copying rest of file...\n");
816 | while (last_offset) {
817 | bytes_to_copy = FFMIN(bytes_to_copy, last_offset);
818 |
819 | if (fread(copy_buffer, bytes_to_copy, 1, infile) != 1) {
820 | perror(pSrc);
821 | goto error_out;
822 | }
823 | if (fwrite(copy_buffer, bytes_to_copy, 1, outfile) != 1) {
824 | perror(pDst);
825 | goto error_out;
826 | }
827 | last_offset -= bytes_to_copy;
828 | }
829 |
830 | fclose(infile);
831 | fclose(outfile);
832 | free(moov_atom);
833 | free(ftyp_atom);
834 | free(copy_buffer);
835 |
836 | return 0;
837 |
838 | error_out:
839 | if (infile)
840 | fclose(infile);
841 | if (outfile)
842 | fclose(outfile);
843 | free(moov_atom);
844 | free(ftyp_atom);
845 | free(copy_buffer);
846 | return 1;
847 | }
848 |
849 |
850 |
--------------------------------------------------------------------------------
/Classes/Mp4_Save.h:
--------------------------------------------------------------------------------
1 | //
2 | // H264_Save.h
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 13/5/24.
6 | //
7 | //
8 |
9 | #ifndef H264_Save_h
10 | #define H264_Save_h
11 | <<<<<<< HEAD:Classes/H264_Save.h
12 |
13 | =======
14 | >>>>>>> origin/master:Classes/Mp4_Save.h
15 |
16 | // TODO: when PTS_DTS_IS_CORRECT==1, it should ok??
17 | #define PTS_DTS_IS_CORRECT 0
18 |
19 | extern int h264_file_create(const char *pFilePath, AVFormatContext *fc, AVCodecContext *pCodecCtx,AVCodecContext *pAudioCodecCtx, double fps, void *p, int len );
20 | extern void h264_file_write_frame(AVFormatContext *fc, int vStreamId, const void* p, int len, int64_t dts, int64_t pts);
21 | extern void h264_file_write_audio_frame(AVFormatContext *fc, AVCodecContext *pAudioCodecContext,int vStreamIdx, const void* p, int len, int64_t dts, int64_t pts );
22 | extern void h264_file_close(AVFormatContext *fc);
23 |
24 | extern void h264_file_write_frame2(AVFormatContext *fc, int vStreamIdx, AVPacket *pkt );
25 |
26 | extern int MoveMP4MoovToHeader(char *pSrc, char *pDst);
27 |
28 | typedef enum
29 | {
30 | eH264RecIdle = 0,
31 | eH264RecInit,
32 | eH264RecActive,
33 | eH264RecClose
34 | } eH264RecordState;
35 |
36 |
37 | #endif
38 |
--------------------------------------------------------------------------------
/Classes/Utilities.h:
--------------------------------------------------------------------------------
1 | //
2 | // Utilities.h
3 | // iFrameExtractor
4 | //
5 | // Created by lajos on 1/10/10.
6 | //
7 | // Copyright 2010 Lajos Kamocsay
8 | //
9 | // lajos at codza dot com
10 | //
11 | // iFrameExtractor is free software; you can redistribute it and/or
12 | // modify it under the terms of the GNU Lesser General Public
13 | // License as published by the Free Software Foundation; either
14 | // version 2.1 of the License, or (at your option) any later version.
15 | //
16 | // iFrameExtractor is distributed in the hope that it will be useful,
17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 | // Lesser General Public License for more details.
20 | //
21 |
22 | #import
23 | #include
24 |
25 | @interface Utilities : NSObject {
26 |
27 | }
28 |
29 | +(NSString *)bundlePath:(NSString *)fileName;
30 | +(NSString *)documentsPath:(NSString *)fileName;
31 |
32 | @end
33 |
--------------------------------------------------------------------------------
/Classes/Utilities.m:
--------------------------------------------------------------------------------
1 | //
2 | // Utilities.m
3 | // iFrameExtractor
4 | //
5 | // Created by lajos on 1/10/10.
6 | //
7 | // Copyright 2010 Lajos Kamocsay
8 | //
9 | // lajos at codza dot com
10 | //
11 | // iFrameExtractor is free software; you can redistribute it and/or
12 | // modify it under the terms of the GNU Lesser General Public
13 | // License as published by the Free Software Foundation; either
14 | // version 2.1 of the License, or (at your option) any later version.
15 | //
16 | // iFrameExtractor is distributed in the hope that it will be useful,
17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 | // Lesser General Public License for more details.
20 | //
21 |
22 | #import "Utilities.h"
23 |
24 |
25 | @implementation Utilities
26 |
27 | +(NSString *)bundlePath:(NSString *)fileName {
28 | return [[[NSBundle mainBundle] bundlePath] stringByAppendingPathComponent:fileName];
29 | }
30 |
31 | +(NSString *)documentsPath:(NSString *)fileName {
32 | NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
33 | NSString *documentsDirectory = [paths objectAtIndex:0];
34 | return [documentsDirectory stringByAppendingPathComponent:fileName];
35 | }
36 |
37 | @end
38 |
--------------------------------------------------------------------------------
/Classes/VideoFrameExtractor.h:
--------------------------------------------------------------------------------
1 | //
2 | // Video.h
3 | // iFrameExtractor
4 | //
5 | // Created by lajos on 1/10/10.
6 | //
7 | // Copyright 2010 Lajos Kamocsay
8 | //
9 | // lajos at codza dot com
10 | //
11 | // iFrameExtractor is free software; you can redistribute it and/or
12 | // modify it under the terms of the GNU Lesser General Public
13 | // License as published by the Free Software Foundation; either
14 | // version 2.1 of the License, or (at your option) any later version.
15 | //
16 | // iFrameExtractor is distributed in the hope that it will be useful,
17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 | // Lesser General Public License for more details.
20 | //
21 |
22 |
23 | #import
24 |
25 | #include "libavformat/avformat.h"
26 | #include "libswscale/swscale.h"
27 |
28 | #include "H264_Save.h"
29 |
30 | #import "AudioPlayer.h"
31 | #import "AudioPacketQueue.h"
32 | #import "AudioUtilities.h"
33 |
34 | #define RECORDING_AT_RTSP_START 0
35 | //#define RECORDING_AT_RTSP_START 1
36 | #define RECPRDING_SECONDS 5
37 |
38 | @interface VideoFrameExtractor : NSObject {
39 | AVFormatContext *pFormatCtx;
40 | AVCodecContext *pCodecCtx;
41 |
42 | AVFrame *pYUVFrame;
43 | AVFrame *pRGBFrame;
44 | AVPacket packet;
45 | int videoStream;
46 | int audioStream;
47 | struct SwsContext *pImgConvertCtx;
48 | int sourceWidth, sourceHeight;
49 | int outputWidth, outputHeight;
50 | UIImage *currentImage;
51 | double duration;
52 | double currentTime;
53 |
54 | AVFormatContext *pFormatCtx_Record;
55 | AVCodecContext *pAudioCodecCtx;
56 |
57 | AudioPlayer *aPlayer;
58 | }
59 |
60 | /* Last decoded picture as UIImage */
61 | @property (nonatomic, readonly) UIImage *currentImage;
62 |
63 | /* Size of video frame */
64 | @property (nonatomic, readonly) int sourceWidth, sourceHeight;
65 |
66 | /* Output image size. Set to the source size by default. */
67 | @property (nonatomic) int outputWidth, outputHeight;
68 |
69 | /* Length of video in seconds */
70 | @property (nonatomic, readonly) double duration;
71 |
72 | /* Current time of video in seconds */
73 | @property (nonatomic, readonly) double currentTime;
74 |
75 | /* Initialize with movie at moviePath. Output dimensions are set to source dimensions. */
76 | -(id)initWithVideo:(NSString *)moviePath;
77 |
78 | /* Read the next frame from the video stream. Returns false if no frame read (video over). */
79 | -(BOOL)stepFrame;
80 |
81 | /* Seek to closest keyframe near specified time */
82 | -(void)seekTime:(double)seconds;
83 |
84 | @property (nonatomic) BOOL bSnapShot;
85 | @property (nonatomic) int veVideoRecordState;
86 | @property (nonatomic, retain) NSTimer *RecordingTimer;
87 |
88 | @end
89 |
--------------------------------------------------------------------------------
/Classes/VideoFrameExtractor.m:
--------------------------------------------------------------------------------
1 | //
2 | // Video.m
3 | // iFrameExtractor
4 | //
5 | // Created by lajos on 1/10/10.
6 | // Copyright 2010 www.codza.com. All rights reserved.
7 | //
8 |
9 | #import "VideoFrameExtractor.h"
10 | #import "Utilities.h"
11 | #import
12 |
13 | @interface VideoFrameExtractor (private)
14 | -(void)convertFrameToRGB;
15 | -(UIImage *)imageFromAVFrame:(AVFrame *)pFrame width:(int)width height:(int)height;
16 | -(void)saveFrame:(AVFrame *)pFrame width:(int)width height:(int)height index:(int)iFrame;
17 | -(void)setupScaler;
18 | @end
19 |
20 | @implementation VideoFrameExtractor
21 |
22 | #define RECORDING_AT_RTSP_START 0
23 | //#define RECORDING_AT_RTSP_START 1
24 |
25 | @synthesize outputWidth, outputHeight;
26 |
27 | @synthesize bSnapShot, veVideoRecordState, RecordingTimer;
28 |
29 |
30 | - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
31 | {
32 | NSLog(@"Snapshot save may fail...");
33 | }
34 |
35 | -(void)setOutputWidth:(int)newValue {
36 | if (outputWidth == newValue) return;
37 | outputWidth = newValue;
38 | [self setupScaler];
39 | }
40 |
41 | -(void)setOutputHeight:(int)newValue {
42 | if (outputHeight == newValue) return;
43 | outputHeight = newValue;
44 | [self setupScaler];
45 | }
46 |
47 |
48 | -(UIImage *)currentImage {
49 | if (!pYUVFrame->data[0]) return nil;
50 | [self convertFrameToRGB];
51 |
52 | // Save the image and clear the bSnapShot flag
53 | if(self.bSnapShot==YES)
54 | {
55 | UIImage *myimg=nil;
56 |
57 | struct SwsContext *pTempImgConvertCtx;
58 |
59 | AVFrame *pTmpAVFrame = av_frame_alloc();
60 | av_frame_unref(pTmpAVFrame);
61 |
62 | int bytes_num = av_image_get_buffer_size(AV_PIX_FMT_RGB24, pYUVFrame->width, pYUVFrame->height, 1);
63 | uint8_t* buff = (uint8_t*)av_malloc(bytes_num);
64 | av_image_fill_arrays((unsigned char **)(AVFrame *)pTmpAVFrame->data, pTmpAVFrame->linesize, buff, AV_PIX_FMT_RGB24, pYUVFrame->width, pYUVFrame->height, 1);
65 | pTmpAVFrame->width = outputWidth;
66 | pTmpAVFrame->height = outputHeight;
67 | pTmpAVFrame->format = AV_PIX_FMT_RGB24;
68 |
69 | pTempImgConvertCtx = sws_getContext(pCodecCtx->width,
70 | pCodecCtx->height,
71 | pCodecCtx->pix_fmt,
72 | pYUVFrame->width,
73 | pYUVFrame->height,
74 | AV_PIX_FMT_RGB24,
75 | SWS_FAST_BILINEAR,
76 | NULL,
77 | NULL,
78 | NULL);
79 |
80 | sws_scale (pTempImgConvertCtx, (const uint8_t **)pYUVFrame->data, pYUVFrame->linesize,
81 | 0, pCodecCtx->height,
82 | pTmpAVFrame->data, pTmpAVFrame->linesize);
83 |
84 | myimg = [self imageFromAVFrame:pTmpAVFrame width:pYUVFrame->width height:pYUVFrame->height];
85 |
86 |
87 | UIImageWriteToSavedPhotosAlbum(myimg, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
88 | self.bSnapShot = NO;
89 |
90 | return myimg;
91 |
92 | }
93 |
94 | return [self imageFromAVFrame:pRGBFrame width:outputWidth height:outputHeight];
95 | }
96 |
97 | -(double)duration {
98 | return (double)pFormatCtx->duration / AV_TIME_BASE;
99 | }
100 |
101 | -(double)currentTime {
102 | AVRational timeBase = pFormatCtx->streams[videoStream]->time_base;
103 | return packet.pts * (double)timeBase.num / timeBase.den;
104 | }
105 |
106 | -(int)sourceWidth {
107 | return pCodecCtx->width;
108 | }
109 |
110 | -(int)sourceHeight {
111 | return pCodecCtx->height;
112 | }
113 |
114 | -(id)initWithVideo:(NSString *)moviePath {
115 | if (!(self=[super init])) return nil;
116 |
117 | AVCodec *pCodec, *pAudioCodec;
118 |
119 | // Register all formats and codecs
120 | avcodec_register_all();
121 | av_register_all();
122 |
123 | avformat_network_init();
124 |
125 | // Open video file
126 | AVDictionary *opts = 0;
127 | av_dict_set(&opts, "rtsp_transport", "tcp", 0);
128 |
129 | if(avformat_open_input(&pFormatCtx, [moviePath cStringUsingEncoding:NSASCIIStringEncoding], NULL, &opts) != 0) {
130 | av_log(NULL, AV_LOG_ERROR, "Couldn't open file\n");
131 | goto initError;
132 | }
133 | av_dict_free(&opts);
134 |
135 | // Retrieve stream information
136 | if(avformat_find_stream_info(pFormatCtx,NULL) < 0) {
137 | av_log(NULL, AV_LOG_ERROR, "Couldn't find stream information\n");
138 | goto initError;
139 | }
140 |
141 | // Find the first video stream
142 | if ((videoStream = av_find_best_stream(pFormatCtx, AVMEDIA_TYPE_VIDEO, -1, -1, &pCodec, 0)) < 0) {
143 | av_log(NULL, AV_LOG_ERROR, "Cannot find a video stream in the input file\n");
144 | goto initError;
145 | }
146 |
147 | // Get a pointer to the codec context for the video stream
148 | pCodecCtx = avcodec_alloc_context3(NULL);
149 | avcodec_parameters_to_context(pCodecCtx, pFormatCtx->streams[videoStream]->codecpar);
150 |
151 | // Find the decoder for the video stream
152 | pCodec = avcodec_find_decoder(pCodecCtx->codec_id);
153 | if(pCodec == NULL) {
154 | av_log(NULL, AV_LOG_ERROR, "Unsupported codec!\n");
155 | goto initError;
156 | }
157 |
158 | // Open codec
159 | if(avcodec_open2(pCodecCtx, pCodec, NULL) < 0) {
160 | av_log(NULL, AV_LOG_ERROR, "Cannot open video decoder\n");
161 | goto initError;
162 | }
163 |
164 | if ((audioStream = av_find_best_stream(pFormatCtx, AVMEDIA_TYPE_AUDIO, -1, -1, &pAudioCodec, 0)) < 0) {
165 | av_log(NULL, AV_LOG_ERROR, "Cannot find a video stream in the input file\n");
166 | }
167 | else
168 | {
169 | pAudioCodecCtx = avcodec_alloc_context3(NULL);
170 | avcodec_parameters_to_context(pAudioCodecCtx, pFormatCtx->streams[audioStream]->codecpar);
171 |
172 | // Find the decoder for the audio stream
173 | pAudioCodec = avcodec_find_decoder(pAudioCodecCtx->codec_id);
174 | if(pAudioCodec == NULL) {
175 | av_log(NULL, AV_LOG_ERROR, "Unsupported codec!\n");
176 | goto initError;
177 | }
178 |
179 | // Open codec
180 | if(avcodec_open2(pAudioCodecCtx, pAudioCodec, NULL) < 0) {
181 | av_log(NULL, AV_LOG_ERROR, "Cannot open audio decoder\n");
182 | goto initError;
183 | }
184 |
185 | }
186 |
187 | av_dump_format(pFormatCtx, 0, [moviePath cStringUsingEncoding:NSASCIIStringEncoding], 0);
188 |
189 | outputWidth = pCodecCtx->width;
190 | outputHeight = pCodecCtx->height;
191 |
192 | // Allocate video frame
193 | pYUVFrame = av_frame_alloc();
194 | int bytes_num = av_image_get_buffer_size(AV_PIX_FMT_YUV420P, outputWidth, outputHeight, 1);
195 | uint8_t* buff = (uint8_t*)av_malloc(bytes_num);
196 | av_image_fill_arrays((unsigned char **)(AVFrame *)pYUVFrame->data, pYUVFrame->linesize, buff, AV_PIX_FMT_YUV420P, outputWidth, outputHeight, 1);
197 | pYUVFrame->width = outputWidth;
198 | pYUVFrame->height = outputHeight;
199 | pYUVFrame->format = AV_PIX_FMT_YUV420P;
200 |
201 | return self;
202 |
203 | initError:
204 | [self release];
205 | return nil;
206 | }
207 |
208 |
209 | -(void)setupScaler {
210 |
211 | // Release old RGB frame and scaler
212 | av_free(pRGBFrame);
213 | sws_freeContext(pImgConvertCtx);
214 |
215 | // Allocate RGB frame
216 | pRGBFrame = av_frame_alloc();
217 | av_frame_unref(pRGBFrame);
218 |
219 | int bytes_num = av_image_get_buffer_size(AV_PIX_FMT_RGB24, pYUVFrame->width, pYUVFrame->height, 1);
220 | uint8_t* buff = (uint8_t*)av_malloc(bytes_num);
221 | av_image_fill_arrays((unsigned char **)(AVFrame *)pRGBFrame->data, pRGBFrame->linesize, buff, AV_PIX_FMT_RGB24, pYUVFrame->width, pYUVFrame->height, 1);
222 | pRGBFrame->width = outputWidth;
223 | pRGBFrame->height = outputHeight;
224 | pRGBFrame->format = AV_PIX_FMT_RGB24;
225 |
226 | // Setup scaler
227 | static int sws_flags = SWS_FAST_BILINEAR;
228 | pImgConvertCtx = sws_getContext(pCodecCtx->width,
229 | pCodecCtx->height,
230 | pCodecCtx->pix_fmt,
231 | outputWidth,
232 | outputHeight,
233 | AV_PIX_FMT_RGB24,
234 | sws_flags, NULL, NULL, NULL);
235 |
236 | }
237 |
238 | -(void)seekTime:(double)seconds {
239 | AVRational timeBase = pFormatCtx->streams[videoStream]->time_base;
240 | int64_t targetFrame = (int64_t)((double)timeBase.den / timeBase.num * seconds);
241 | avformat_seek_file(pFormatCtx, videoStream, targetFrame, targetFrame, targetFrame, AVSEEK_FLAG_FRAME);
242 | avcodec_flush_buffers(pCodecCtx);
243 | }
244 |
245 | -(void)dealloc {
246 |
247 | [aPlayer Stop:TRUE];
248 |
249 | // Free scaler
250 | sws_freeContext(pImgConvertCtx);
251 |
252 | // Free RGB frame
253 | av_free(pRGBFrame);
254 |
255 | // Free the packet that was allocated by av_read_frame
256 | av_packet_unref(&packet);
257 |
258 | // Free the YUV frame
259 | av_free(pYUVFrame);
260 |
261 | // Close the codec
262 | if (pCodecCtx) avcodec_close(pCodecCtx);
263 |
264 | // Close the video file
265 | if (pFormatCtx) avformat_close_input(&pFormatCtx);
266 |
267 | [super dealloc];
268 | }
269 |
270 | -(void)StopRecording:(NSTimer *)timer {
271 | veVideoRecordState = eH264RecClose;
272 | NSLog(@"eH264RecClose");
273 | [timer invalidate];
274 | }
275 |
276 | -(BOOL)stepFrame {
277 | int frameFinished=0;
278 | static bool bFirstIFrame=false;
279 | static int64_t vPTS=0, vDTS=0, vAudioPTS=0, vAudioDTS=0;
280 |
281 | while(!frameFinished && av_read_frame(pFormatCtx, &packet)>=0) {
282 | // Is this a packet from the video stream?
283 | int vRet = 0;
284 | if(packet.stream_index==videoStream) {
285 |
286 |
287 | // Initialize a new format context for writing file
288 | if(veVideoRecordState!=eH264RecIdle)
289 | {
290 | switch(veVideoRecordState)
291 | {
292 | case eH264RecInit:
293 | {
294 | if ( !pFormatCtx_Record )
295 | {
296 | int bFlag = 0;
297 | //NSString *videoPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/test.mp4"];
298 | NSString *videoPath = @"/Users/liaokuohsun/iFrameTest.mp4";
299 |
300 | const char *file = [videoPath UTF8String];
301 | //pFormatCtx_Record = avformat_alloc_context();
302 | avformat_alloc_output_context2(&pFormatCtx_Record, NULL, NULL, file);
303 | bFlag = h264_file_create(file, pFormatCtx_Record, pCodecCtx, pAudioCodecCtx,/*fps*/0.0, packet.data, packet.size );
304 |
305 | if(bFlag==true)
306 | {
307 | veVideoRecordState = eH264RecActive;
308 | fprintf(stderr, "h264_file_create success\n");
309 | }
310 | else
311 | {
312 | veVideoRecordState = eH264RecIdle;
313 | fprintf(stderr, "h264_file_create error\n");
314 | }
315 | }
316 | }
317 | //break;
318 |
319 | case eH264RecActive:
320 | {
321 | if((bFirstIFrame==false) &&(packet.flags&AV_PKT_FLAG_KEY)==AV_PKT_FLAG_KEY)
322 | {
323 | bFirstIFrame=true;
324 | vPTS = packet.pts ;
325 | vDTS = packet.dts ;
326 | #if 0
327 | NSRunLoop *pRunLoop = [NSRunLoop currentRunLoop];
328 | [pRunLoop addTimer:RecordingTimer forMode:NSDefaultRunLoopMode];
329 | #else
330 | [NSTimer scheduledTimerWithTimeInterval:5.0//2.0
331 | target:self
332 | selector:@selector(StopRecording:)
333 | userInfo:nil
334 | repeats:NO];
335 | #endif
336 | }
337 |
338 | // Record audio when 1st i-Frame is obtained
339 | if(bFirstIFrame==true)
340 | {
341 | if ( pFormatCtx_Record )
342 | {
343 | #if PTS_DTS_IS_CORRECT==1
344 | packet.pts = packet.pts - vPTS;
345 | packet.dts = packet.dts - vDTS;
346 |
347 | #endif
348 | // h264_file_write_frame2( pFormatCtx_Record, packet.stream_index, &packet);
349 | h264_file_write_frame( pFormatCtx_Record, packet.stream_index, packet.data, packet.size, packet.dts, packet.pts);
350 |
351 | }
352 | else
353 | {
354 | NSLog(@"pFormatCtx_Record no exist");
355 | }
356 | }
357 | }
358 | break;
359 |
360 | case eH264RecClose:
361 | {
362 | bFirstIFrame = false;
363 | veVideoRecordState = eH264RecIdle;
364 |
365 | if ( pFormatCtx_Record )
366 | {
367 | h264_file_close(pFormatCtx_Record);
368 | #if 0
369 | // 20130607 Test, TODO: remove me
370 | dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void)
371 | {
372 | ALAssetsLibrary *library = [[ALAssetsLibrary alloc]init];
373 | NSString *filePathString = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/test.mp4"];
374 | NSURL *filePathURL = [NSURL fileURLWithPath:filePathString isDirectory:NO];
375 | if(1)// ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:filePathURL])
376 | {
377 | [library writeVideoAtPathToSavedPhotosAlbum:filePathURL completionBlock:^(NSURL *assetURL, NSError *error){
378 | if (error) {
379 | // TODO: error handling
380 | NSLog(@"writeVideoAtPathToSavedPhotosAlbum error");
381 | } else {
382 | // TODO: success handling
383 | NSLog(@"writeVideoAtPathToSavedPhotosAlbum success");
384 | }
385 | }];
386 | }
387 | [library release];
388 | });
389 | #endif
390 | vPTS = 0;
391 | vDTS = 0;
392 | vAudioPTS = 0;
393 | vAudioDTS = 0;
394 | pFormatCtx_Record = NULL;
395 | NSLog(@"h264_file_close() is finished");
396 | }
397 | else
398 | {
399 | NSLog(@"fc no exist");
400 | }
401 | }
402 | break;
403 |
404 | default:
405 | if ( pFormatCtx_Record )
406 | {
407 | h264_file_close(pFormatCtx_Record);
408 | pFormatCtx_Record = NULL;
409 | }
410 | NSLog(@"[ERROR] unexpected veVideoRecordState!!");
411 | veVideoRecordState = eH264RecIdle;
412 | break;
413 | }
414 | }
415 |
416 | // Decode video frame
417 | avcodec_send_packet(pCodecCtx, &packet);
418 | do {
419 | vRet = avcodec_receive_frame(pCodecCtx, pYUVFrame);
420 | } while(vRet==EAGAIN);
421 |
422 | if(vRet==0) frameFinished=1;
423 | else frameFinished=0;
424 |
425 | }
426 | else if(packet.stream_index==audioStream)
427 | {
428 | static int vPktCount=0;
429 | BOOL bIsAACADTS = FALSE;
430 |
431 | if(aPlayer.vAACType == eAAC_UNDEFINED)
432 | {
433 | tAACADTSHeaderInfo vxAACADTSHeaderInfo = {0};
434 | bIsAACADTS = [AudioUtilities parseAACADTSHeader:(uint8_t *)packet.data ToHeader:&vxAACADTSHeaderInfo];
435 | }
436 |
437 | @synchronized(aPlayer)
438 | {
439 | if(aPlayer==nil)
440 | {
441 | aPlayer = [[AudioPlayer alloc]initAudio:nil withCodecCtx:(AVCodecContext *) pAudioCodecCtx];
442 | NSLog(@"aPlayer initAudio");
443 |
444 | if(bIsAACADTS)
445 | {
446 | aPlayer.vAACType = eAAC_ADTS;
447 | NSLog(@"is ADTS AAC");
448 | }
449 | }
450 | else
451 | {
452 | if(vPktCount<5) // The voice is listened once image is rendered
453 | {
454 | vPktCount++;
455 | }
456 | else
457 | {
458 | if([aPlayer getStatus]!=eAudioRunning)
459 | {
460 | NSLog(@"aPlayer start play");
461 | [aPlayer Play];
462 | }
463 | }
464 | }
465 | };
466 |
467 | @synchronized(aPlayer)
468 | {
469 | int ret = 0;
470 |
471 | // AVPacket vxPacket = {0};
472 | // uint8_t *pTmp = (uint8_t *) malloc(frameDataLength);
473 | // memcpy(pTmp, frameData, frameDataLength);
474 | // vxPacket.data = (uint8_t *)pTmp;
475 | // vxPacket.size = frameDataLength;
476 | // ret = [aPlayer putAVPacket:&vxPacket];
477 |
478 | ret = [aPlayer putAVPacket:&packet];
479 | if(ret <= 0)
480 | NSLog(@"Put Audio Packet Error!!");
481 |
482 | }
483 |
484 | if(bFirstIFrame==true)
485 | {
486 | switch(veVideoRecordState)
487 | {
488 | case eH264RecActive:
489 | {
490 | if ( pFormatCtx_Record )
491 | {
492 | h264_file_write_audio_frame(pFormatCtx_Record, pAudioCodecCtx, packet.stream_index, packet.data, packet.size, packet.dts, packet.pts);
493 |
494 | }
495 | else
496 | {
497 | NSLog(@"pFormatCtx_Record no exist");
498 | }
499 | }
500 | }
501 | }
502 | }
503 | else
504 | {
505 | //fprintf(stderr, "packet len=%d, Byte=%02X%02X%02X%02X%02X\n",\
506 | packet.size, packet.data[0],packet.data[1],packet.data[2],packet.data[3], packet.data[4]);
507 | }
508 | }
509 | return frameFinished!=0;
510 | }
511 |
512 | -(void)convertFrameToRGB {
513 | sws_scale (pImgConvertCtx, (const uint8_t **)pYUVFrame->data, pYUVFrame->linesize,
514 | 0, pCodecCtx->height,
515 | pRGBFrame->data, pRGBFrame->linesize);
516 | }
517 |
518 | -(UIImage *)imageFromAVFrame:(AVFrame *)frame width:(int)width height:(int)height {
519 | CGBitmapInfo bitmapInfo = kCGBitmapByteOrderDefault;
520 | CFDataRef data = CFDataCreateWithBytesNoCopy(kCFAllocatorDefault, frame->data[0], frame->linesize[0]*height,kCFAllocatorNull);
521 | CGDataProviderRef provider = CGDataProviderCreateWithCFData(data);
522 | CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
523 | CGImageRef cgImage = CGImageCreate(width,
524 | height,
525 | 8,
526 | 24,
527 | frame->linesize[0],
528 | colorSpace,
529 | bitmapInfo,
530 | provider,
531 | NULL,
532 | NO,
533 | kCGRenderingIntentDefault);
534 | CGColorSpaceRelease(colorSpace);
535 | UIImage *image = [UIImage imageWithCGImage:cgImage];
536 | CGImageRelease(cgImage);
537 | CGDataProviderRelease(provider);
538 | CFRelease(data);
539 |
540 | return image;
541 | }
542 |
543 | -(void)savePPMPicture:(AVFrame *)frame width:(int)width height:(int)height index:(int)iFrame {
544 | FILE *pFile;
545 | NSString *fileName;
546 | int y;
547 |
548 | fileName = [Utilities documentsPath:[NSString stringWithFormat:@"image%04d.ppm",iFrame]];
549 | // Open file
550 | NSLog(@"write image file: %@",fileName);
551 | pFile=fopen([fileName cStringUsingEncoding:NSASCIIStringEncoding], "wb");
552 | if(pFile==NULL)
553 | return;
554 |
555 | // Write header
556 | fprintf(pFile, "P6\n%d %d\n255\n", width, height);
557 |
558 | // Write pixel data
559 | for(y=0; ydata[0]+y*frame->linesize[0], 1, width*3, pFile);
561 |
562 | // Close file
563 | fclose(pFile);
564 | }
565 |
566 | @end
567 |
--------------------------------------------------------------------------------
/Classes/iFrameExtractorViewController.h:
--------------------------------------------------------------------------------
1 | //
2 | // iFrameExtractorViewController.h
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 2016/11/24.
6 | //
7 | //
8 |
9 | #import
10 |
11 | @class VideoFrameExtractor;
12 |
13 | #define RECORDING_AT_RTSP_START 0
14 | //#define RECORDING_AT_RTSP_START 1
15 | #define RECPRDING_SECONDS 5
16 |
17 | @interface iFrameExtractorViewController : UIViewController {
18 | //VideoFrameExtractor *video;
19 | float lastFrameTime;
20 | }
21 | @property (nonatomic, retain) IBOutlet UIImageView *imageView;
22 | @property (nonatomic, retain) IBOutlet UILabel *label;
23 | @property (nonatomic, retain) IBOutlet UIButton *playButton;
24 | @property (nonatomic, retain) VideoFrameExtractor *video;
25 | @property (retain, nonatomic) IBOutlet UIButton *RecordButton;
26 | @property (retain, nonatomic) IBOutlet UIButton *SnapShotButton;
27 | @property (retain, nonatomic) IBOutlet UILabel *RecordProgressLevel;
28 | @property (nonatomic) int vRecordSeconds;
29 |
30 |
31 | -(IBAction)playButtonAction:(id)sender;
32 | - (IBAction)SnapShotButtonAction:(id)sender;
33 | - (IBAction)RecordButtionAction:(id)sender;
34 |
35 | @end
36 |
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/Classes/iFrameExtractorViewController.m:
--------------------------------------------------------------------------------
1 | //
2 | // iFrameExtractorViewController.m
3 | // iFrameExtractor
4 | //
5 | // Created by Liao KuoHsun on 2016/11/24.
6 | //
7 | //
8 |
9 | #import "iFrameExtractorViewController.h"
10 |
11 | #import "VideoFrameExtractor.h"
12 | #import "Utilities.h"
13 | #include "H264_Save.h"
14 |
15 | @interface iFrameExtractorViewController ()
16 |
17 | @end
18 |
19 | @implementation iFrameExtractorViewController
20 | @synthesize imageView, label, playButton, video, RecordProgressLevel, vRecordSeconds;
21 |
22 | - (void)viewDidLoad {
23 | [super viewDidLoad];
24 | // Do any additional setup after loading the view.
25 |
26 | // Test URL
27 | // rtsp://184.72.239.149/vod/mp4://BigBuckBunny_175k.mov
28 | // http://210.65.250.18:8080/cam000b67014ff5001/20131023/090000.mp4
29 |
30 | // Test File
31 | // 7h800-2.mp4
32 | // h265_ex3.mp4
33 |
34 |
35 | NSLog(@"Try Connect: %f",video.duration);
36 | //video = [[VideoFrameExtractor alloc] initWithVideo:[Utilities bundlePath:@"7h800-2.mp4"]];
37 | video = [[VideoFrameExtractor alloc] initWithVideo:[Utilities bundlePath:@"h265_ex3.mp4"]];
38 | //video = [[VideoFrameExtractor alloc] initWithVideo:@"rtsp://192.168.11.2:8554/h265ESVideoTest"];
39 | //video = [[VideoFrameExtractor alloc] initWithVideo:@"rtsp://172.19.19.146/stream1"];
40 |
41 | // set output image size
42 | video.outputWidth = 1280-120; // reserver 120 pixel for control button
43 | video.outputHeight = 720;
44 |
45 | // print some info about the video
46 | NSLog(@"video duration: %f",video.duration);
47 | NSLog(@"video size: %d x %d", video.sourceWidth, video.sourceHeight);
48 |
49 | // set the initial value to progress level
50 | [RecordProgressLevel setHidden:YES];
51 |
52 | // If video images are landscape, so rotate image view 90 degrees
53 | //[imageView setTransform:CGAffineTransformMakeRotation(M_PI/2)];
54 |
55 | }
56 |
57 | - (void)didReceiveMemoryWarning {
58 | [super didReceiveMemoryWarning];
59 | // Dispose of any resources that can be recreated.
60 | }
61 |
62 |
63 | #if RECORDING_AT_RTSP_START==1
64 | -(void)StopRecording:(NSTimer *)timer {
65 | video.veVideoRecordState = eH264RecClose;
66 | NSLog(@"eH264RecClose");
67 | [timer invalidate];
68 | }
69 | #endif
70 |
71 | -(IBAction)playButtonAction:(id)sender {
72 | [playButton setEnabled:NO];
73 | lastFrameTime = -1;
74 |
75 | // seek to 0.0 seconds
76 | [video seekTime:0.0];
77 |
78 |
79 | #if RECORDING_AT_RTSP_START==1
80 | video.veVideoRecordState = eH264RecInit;
81 | [NSTimer scheduledTimerWithTimeInterval:10.0
82 | target:self
83 | selector:@selector(StopRecording:)
84 | userInfo:nil
85 | repeats:NO];
86 | #endif
87 |
88 | [NSTimer scheduledTimerWithTimeInterval:1.0/30
89 | target:self
90 | selector:@selector(displayNextFrame:)
91 | userInfo:nil
92 | repeats:YES];
93 | }
94 |
95 |
96 | - (IBAction)SnapShotButtonAction:(id)sender {
97 | video.bSnapShot = YES;
98 | }
99 |
100 |
101 | #define LERP(A,B,C) ((A)*(1.0-C)+(B)*C)
102 |
103 | -(void)displayNextFrame:(NSTimer *)timer {
104 | NSTimeInterval startTime = [NSDate timeIntervalSinceReferenceDate];
105 | if (![video stepFrame]) {
106 | [timer invalidate];
107 | [playButton setEnabled:YES];
108 | return;
109 | }
110 | imageView.image = video.currentImage;
111 | float frameTime = 1.0/([NSDate timeIntervalSinceReferenceDate]-startTime);
112 | if (lastFrameTime<0) {
113 | lastFrameTime = frameTime;
114 | } else {
115 | lastFrameTime = LERP(frameTime, lastFrameTime, 0.8);
116 | }
117 | [label setText:[NSString stringWithFormat:@"%.0f",lastFrameTime]];
118 | }
119 |
120 |
121 | #pragma mark - ffmpeg usage
122 | -(void)UpdateProgressLevel:(NSTimer *)timer {
123 | NSLog(@"RecordProgress:%d", vRecordSeconds);
124 |
125 | if(vRecordSeconds==0)
126 | {
127 | video.veVideoRecordState = eH264RecClose;
128 | [RecordProgressLevel setHidden:YES];
129 | [timer invalidate];
130 | }
131 | else
132 | {
133 | vRecordSeconds--;
134 | }
135 | NSString *vpTmp = [NSString stringWithFormat:@"Recording 00:%02d", vRecordSeconds];
136 | [RecordProgressLevel setText:vpTmp];
137 |
138 | }
139 |
140 | - (IBAction)RecordButtionAction:(id)sender {
141 | video.veVideoRecordState = eH264RecInit;
142 |
143 | // Update the recording progress
144 | vRecordSeconds = RECPRDING_SECONDS;
145 | NSString *vpTmp = [NSString stringWithFormat:@"Recording 00:%02d", vRecordSeconds];
146 | [RecordProgressLevel setText:vpTmp];
147 |
148 | [RecordProgressLevel setHidden:NO];
149 |
150 | [NSTimer scheduledTimerWithTimeInterval:1.0
151 | target:self
152 | selector:@selector(UpdateProgressLevel:)
153 | userInfo:nil
154 | repeats:YES];
155 | }
156 |
157 | - (void)dealloc {
158 | [super dealloc];
159 | }
160 | @end
161 |
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/README.markdown:
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1 | **original copyright**
2 | >This project extracts frames from video recorded by iPhone 3Gs
3 | using the LGPL FFmpeg libraries.
4 |
5 | >This software is licensed under the GNU-LGPL version 2.1 or later.
6 |
7 | >Copyright 2010 Lajos Kamocsay
8 |
9 | >lajos at codza dot com
10 |
11 | ## Introduction ##
12 |
13 | This project is forked from .
14 | I update the code for the latest ffmpeg and iOS version. The source code is tested on `Mac OS 10.7.4(Lion)` for `ffmpeg 0.11.1` and `iOS 5.1` with `Xcode 4.3.2`.
15 |
16 | ## Build steps ##
17 |
18 | - Download the code using
19 |
20 | `git clone git://github.com/PinkyJie/iFrameExtractor.git`
21 |
22 | - Download the latest ffmpeg (0.11.1 tested) using
23 |
24 | `git clone git://source.ffmpeg.org/ffmpeg.git`
25 |
26 | - Put the ffmpeg source code into the folder `ffmpeg`
27 |
28 | - Copy the perl script `gas-preprocessor.pl` into `/usr/local/bin` folder
29 |
30 | - Change directory to your `ffmpeg` folder, select your target platform and follow the scripts below
31 |
32 | ### Platforms ###
33 |
34 | - `armv7` (for iPhone 3GS and devices after 3GS)
35 |
36 | ##### configure #####
37 |
38 | >./configure \
39 |
40 | >--cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
41 |
42 | >--as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
43 |
44 | >--sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk \
45 |
46 | >--target-os=darwin \
47 |
48 | >--arch=arm \
49 |
50 | >--cpu=cortex-a8 \
51 |
52 | >--extra-cflags='-arch armv7' \
53 |
54 | >--extra-ldflags='-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk' \
55 |
56 | >--prefix=compiled/armv7 \
57 |
58 | >--enable-cross-compile \
59 |
60 | >--enable-nonfree \
61 |
62 | >--enable-gpl \
63 |
64 | >--disable-armv5te \
65 |
66 | >--disable-swscale-alpha \
67 |
68 | >--disable-doc \
69 |
70 | >--disable-ffmpeg \
71 |
72 | >--disable-ffplay \
73 |
74 | >--disable-ffprobe \
75 |
76 | >--disable-ffserver \
77 |
78 | >--disable-asm \
79 |
80 | >--disable-debug
81 |
82 | ##### make #####
83 |
84 | >make clean
85 |
86 | >make && make install
87 |
88 | - `armv6` (for devices before 3GS)
89 |
90 | ##### configure #####
91 |
92 | >./configure \
93 |
94 | >--cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
95 |
96 | >--as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
97 |
98 | >--sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk \
99 |
100 | >--target-os=darwin \
101 |
102 | >--arch=arm \
103 |
104 | >--cpu=arm1176jzf-s \
105 |
106 | >--extra-cflags='-arch armv6' \
107 |
108 | >--extra-ldflags='-arch armv6 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk' \
109 |
110 | >--prefix=compiled/armv6 \
111 |
112 | >--enable-cross-compile \
113 |
114 | >--enable-nonfree \
115 |
116 | >--enable-gpl \
117 |
118 | >--disable-armv5te \
119 |
120 | >--disable-swscale-alpha \
121 |
122 | >--disable-doc \
123 |
124 | >--disable-ffmpeg \
125 |
126 | >--disable-ffplay \
127 |
128 | >--disable-ffprobe \
129 |
130 | >--disable-ffserver \
131 |
132 | >--disable-asm \
133 |
134 | >--disable-debug
135 |
136 | ##### make #####
137 |
138 | >make clean
139 |
140 | >make && make install
141 |
142 | - `i386` (for simulator)
143 |
144 | ##### configure #####
145 |
146 | >./configure \
147 |
148 | >--cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc \
149 |
150 | >--as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc' \
151 |
152 | >--sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk \
153 |
154 | >--target-os=darwin \
155 |
156 | >--arch=i386 \
157 |
158 | >--cpu=i386 \
159 |
160 | >--extra-cflags='-arch i386' \
161 |
162 | >--extra-ldflags='-arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk' \
163 |
164 | >--prefix=compiled/i386 \
165 |
166 | >--enable-cross-compile \
167 |
168 | >--enable-nonfree \
169 |
170 | >--enable-gpl \
171 |
172 | >--disable-armv5te \
173 |
174 | >--disable-swscale-alpha \
175 |
176 | >--disable-doc \
177 |
178 | >--disable-ffmpeg \
179 |
180 | >--disable-ffplay \
181 |
182 | >--disable-ffprobe \
183 |
184 | >--disable-ffserver \
185 |
186 | >--disable-asm \
187 |
188 | >--disable-debug
189 |
190 | ##### make #####
191 |
192 | >make clean
193 |
194 | >make && make install
195 |
196 | - `universal` (using one *.a files for all platforms)
197 |
198 | >mkdir -p ./compiled/fat/lib
199 |
200 | >lipo -output ./compiled/fat/lib/libavcodec.a -create \
201 |
202 | >-arch armv6 ./compiled/armv6/lib/libavcodec.a \
203 |
204 | >-arch armv7 ./compiled/armv7/lib/libavcodec.a \
205 |
206 | >-arch i386 ./compiled/i386/lib/libavcodec.a
207 |
208 |
209 | >lipo -output ./compiled/fat/lib/libavdevice.a -create \
210 |
211 | >-arch armv6 ./compiled/armv6/lib/libavdevice.a \
212 |
213 | >-arch armv7 ./compiled/armv7/lib/libavdevice.a \
214 |
215 | >-arch i386 ./compiled/i386/lib/libavdevice.a
216 |
217 | >lipo -output ./compiled/fat/lib/libavformat.a -create \
218 |
219 | >-arch armv6 ./compiled/armv6/lib/libavformat.a \
220 |
221 | >-arch armv7 ./compiled/armv7/lib/libavformat.a \
222 |
223 | >-arch i386 ./compiled/i386/lib/libavformat.a
224 |
225 |
226 | >lipo -output ./compiled/fat/lib/libavutil.a -create \
227 |
228 | >-arch armv6 ./compiled/armv6/lib/libavutil.a \
229 |
230 | >-arch armv7 ./compiled/armv7/lib/libavutil.a \
231 |
232 | >-arch i386 ./compiled/i386/lib/libavutil.a
233 |
234 |
235 | >lipo -output ./compiled/fat/lib/libswresample.a -create \
236 |
237 | >-arch armv6 ./compiled/armv6/lib/libswresample.a \
238 |
239 | >-arch armv7 ./compiled/armv7/lib/libswresample.a \
240 |
241 | >-arch i386 ./compiled/i386/lib/libswresample.a
242 |
243 |
244 | >lipo -output ./compiled/fat/lib/libpostproc.a -create \
245 |
246 | >-arch armv6 ./compiled/armv6/lib/libpostproc.a \
247 |
248 | >-arch armv7 ./compiled/armv7/lib/libpostproc.a \
249 |
250 | >-arch i386 ./compiled/i386/lib/libpostproc.a
251 |
252 |
253 | >lipo -output ./compiled/fat/lib/libswscale.a -create \
254 |
255 | >-arch armv6 ./compiled/armv6/lib/libswscale.a \
256 |
257 | >-arch armv7 ./compiled/armv7/lib/libswscale.a \
258 |
259 | >-arch i386 ./compiled/i386/lib/libswscale.a
260 |
261 |
262 | >lipo -output ./compiled/fat/lib/libavfilter.a -create \
263 |
264 | >-arch armv6 ./compiled/armv6/lib/libavfilter.a \
265 |
266 | >-arch armv7 ./compiled/armv7/lib/libavfilter.a \
267 |
268 | >-arch i386 ./compiled/i386/lib/libavfilter.a
269 |
270 | #### The complied static libraries (*.a) lie in the`ffmpeg/compiled` folder. ####
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/gas-preprocessor.pl:
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1 | #!/usr/bin/env perl
2 | # by David Conrad
3 | # This code is licensed under GPLv2 or later; go to gnu.org to read it
4 | # (not that it much matters for an asm preprocessor)
5 | # usage: set your assembler to be something like "perl gas-preprocessor.pl gcc"
6 | use strict;
7 |
8 | # Apple's gas is ancient and doesn't support modern preprocessing features like
9 | # .rept and has ugly macro syntax, among other things. Thus, this script
10 | # implements the subset of the gas preprocessor used by x264 and ffmpeg
11 | # that isn't supported by Apple's gas.
12 |
13 | # FIXME: doesn't work if the path has spaces, but oh well...
14 | my $gcc_cmd = join(' ', @ARGV);
15 | my $preprocess_c_cmd;
16 |
17 | if ($gcc_cmd =~ /\S+\.c/) {
18 | # C file (inline asm?) - compile
19 | $preprocess_c_cmd = "$gcc_cmd -S";
20 | $gcc_cmd =~ s/\S+\.c/-x assembler -/g;
21 | } elsif ($gcc_cmd =~ /\S+\.S/) {
22 | # asm file, just do C preprocessor
23 | $preprocess_c_cmd = "$gcc_cmd -E";
24 | $gcc_cmd =~ s/\S+\.S/-x assembler -/g;
25 | } else {
26 | die "Unrecognized input filetype";
27 | }
28 |
29 | $preprocess_c_cmd =~ s/\S+\.o/-/g;
30 |
31 | open(ASMFILE, "-|", $preprocess_c_cmd) || die "Error running preprocessor";
32 |
33 | my $current_macro = '';
34 | my %macro_lines;
35 | my %macro_args;
36 | my %macro_args_default;
37 |
38 | my @pass1_lines;
39 |
40 | # pass 1: parse .macro
41 | # note that the handling of arguments is probably overly permissive vs. gas
42 | # but it should be the same for valid cases
43 | while () {
44 | # comment out unsupported directives
45 | s/\.type/@.type/x;
46 | s/\.func/@.func/x;
47 | s/\.endfunc/@.endfunc/x;
48 | s/\.ltorg/@.ltorg/x;
49 | s/\.size/@.size/x;
50 | s/\.fpu/@.fpu/x;
51 |
52 | # the syntax for these is a little different
53 | s/\.global/.globl/x;
54 | # also catch .section .rodata since the equivalent to .const_data is .section __DATA,__const
55 | s/(.*)\.rodata/.const_data/x;
56 | s/\.int/.long/x;
57 | s/\.float/.single/x;
58 |
59 | # catch unknown section names that aren't mach-o style (with a comma)
60 | if (/.section ([^,]*)$/) {
61 | die ".section $1 unsupported; figure out the mach-o section name and add it";
62 | }
63 |
64 | # macros creating macros is not handled (is that valid?)
65 | if (/\.macro\s+([\d\w\.]+)\s*(.*)/) {
66 | $current_macro = $1;
67 |
68 | # commas in the argument list are optional, so only use whitespace as the separator
69 | my $arglist = $2;
70 | $arglist =~ s/,/ /g;
71 |
72 | my @args = split(/\s+/, $arglist);
73 | foreach my $i (0 .. $#args) {
74 | my @argpair = split(/=/, $args[$i]);
75 | $macro_args{$current_macro}[$i] = $argpair[0];
76 | $argpair[0] =~ s/:vararg$//;
77 | $macro_args_default{$current_macro}{$argpair[0]} = $argpair[1];
78 | }
79 | # ensure %macro_lines has the macro name added as a key
80 | $macro_lines{$current_macro} = [];
81 | } elsif (/\.endm/) {
82 | if (!$current_macro) {
83 | die "ERROR: .endm without .macro";
84 | }
85 | $current_macro = '';
86 | } elsif ($current_macro) {
87 | push(@{$macro_lines{$current_macro}}, $_);
88 | } else {
89 | expand_macros($_);
90 | }
91 | }
92 |
93 | sub expand_macros {
94 | my $line = @_[0];
95 | if ($line =~ /(\S+:|)\s*([\w\d\.]+)\s*(.*)/ && exists $macro_lines{$2}) {
96 | push(@pass1_lines, $1);
97 | my $macro = $2;
98 |
99 | # commas are optional here too, but are syntactically important because
100 | # parameters can be blank
101 | my @arglist = split(/,/, $3);
102 | my @args;
103 | foreach (@arglist) {
104 | my @whitespace_split = split(/\s+/, $_);
105 | if (!@whitespace_split) {
106 | push(@args, '');
107 | } else {
108 | foreach (@whitespace_split) {
109 | if (length($_)) {
110 | push(@args, $_);
111 | }
112 | }
113 | }
114 | }
115 |
116 | my %replacements;
117 | if ($macro_args_default{$macro}){
118 | %replacements = %{$macro_args_default{$macro}};
119 | }
120 |
121 | # construct hashtable of text to replace
122 | foreach my $i (0 .. $#args) {
123 | my $argname = $macro_args{$macro}[$i];
124 |
125 | if ($args[$i] =~ m/=/) {
126 | # arg=val references the argument name
127 | # XXX: I'm not sure what the expected behaviour if a lot of
128 | # these are mixed with unnamed args
129 | my @named_arg = split(/=/, $args[$i]);
130 | $replacements{$named_arg[0]} = $named_arg[1];
131 | } elsif ($i > $#{$macro_args{$macro}}) {
132 | # more args given than the macro has named args
133 | # XXX: is vararg allowed on arguments before the last?
134 | $argname = $macro_args{$macro}[-1];
135 | if ($argname =~ s/:vararg$//) {
136 | $replacements{$argname} .= ", $args[$i]";
137 | } else {
138 | die "Too many arguments to macro $macro";
139 | }
140 | } else {
141 | $argname =~ s/:vararg$//;
142 | $replacements{$argname} = $args[$i];
143 | }
144 | }
145 |
146 | # apply replacements as regex
147 | foreach (@{$macro_lines{$macro}}) {
148 | my $macro_line = $_;
149 | # do replacements by longest first, this avoids wrong replacement
150 | # when argument names are subsets of each other
151 | foreach (reverse sort {length $a <=> length $b} keys %replacements) {
152 | $macro_line =~ s/\\$_/$replacements{$_}/g;
153 | }
154 | $macro_line =~ s/\\\(\)//g; # remove \()
155 | expand_macros($macro_line);
156 | }
157 | } else {
158 | push(@pass1_lines, $line);
159 | }
160 | }
161 |
162 | close(ASMFILE) or exit 1;
163 | open(ASMFILE, "|-", $gcc_cmd) or die "Error running assembler";
164 |
165 | my @sections;
166 | my $num_repts;
167 | my $rept_lines;
168 |
169 | my %literal_labels; # for ldr , =
170 | my $literal_num = 0;
171 |
172 | # pass 2: parse .rept and .if variants
173 | # NOTE: since we don't implement a proper parser, using .rept with a
174 | # variable assigned from .set is not supported
175 | foreach my $line (@pass1_lines) {
176 | # textual comparison .if
177 | # this assumes nothing else on the same line
178 | if ($line =~ /\.ifnb\s+(.*)/) {
179 | if ($1) {
180 | $line = ".if 1\n";
181 | } else {
182 | $line = ".if 0\n";
183 | }
184 | } elsif ($line =~ /\.ifb\s+(.*)/) {
185 | if ($1) {
186 | $line = ".if 0\n";
187 | } else {
188 | $line = ".if 1\n";
189 | }
190 | } elsif ($line =~ /\.ifc\s+(.*)\s*,\s*(.*)/) {
191 | if ($1 eq $2) {
192 | $line = ".if 1\n";
193 | } else {
194 | $line = ".if 0\n";
195 | }
196 | }
197 |
198 | # handle .previous (only with regard to .section not .subsection)
199 | if ($line =~ /\.(section|text|const_data)/) {
200 | push(@sections, $line);
201 | } elsif ($line =~ /\.previous/) {
202 | if (!$sections[-2]) {
203 | die ".previous without a previous section";
204 | }
205 | $line = $sections[-2];
206 | push(@sections, $line);
207 | }
208 |
209 | # handle ldr , =
210 | if ($line =~ /(.*)\s*ldr([\w\s\d]+)\s*,\s*=(.*)/) {
211 | my $label = $literal_labels{$3};
212 | if (!$label) {
213 | $label = ".Literal_$literal_num";
214 | $literal_num++;
215 | $literal_labels{$3} = $label;
216 | }
217 | $line = "$1 ldr$2, $label\n";
218 | } elsif ($line =~ /\.ltorg/) {
219 | foreach my $literal (keys %literal_labels) {
220 | $line .= "$literal_labels{$literal}:\n .word $literal\n";
221 | }
222 | %literal_labels = ();
223 | }
224 |
225 | # @l -> lo16() @ha -> ha16()
226 | $line =~ s/,\s+([^,]+)\@l(\s)/, lo16($1)$2/g;
227 | $line =~ s/,\s+([^,]+)\@ha(\s)/, ha16($1)$2/g;
228 |
229 | if ($line =~ /\.rept\s+(.*)/) {
230 | $num_repts = $1;
231 | $rept_lines = "\n";
232 |
233 | # handle the possibility of repeating another directive on the same line
234 | # .endr on the same line is not valid, I don't know if a non-directive is
235 | if ($num_repts =~ s/(\.\w+.*)//) {
236 | $rept_lines .= "$1\n";
237 | }
238 | $num_repts = eval($num_repts);
239 | } elsif ($line =~ /\.endr/) {
240 | for (1 .. $num_repts) {
241 | print ASMFILE $rept_lines;
242 | }
243 | $rept_lines = '';
244 | } elsif ($rept_lines) {
245 | $rept_lines .= $line;
246 | } else {
247 | print ASMFILE $line;
248 | }
249 | }
250 |
251 | print ASMFILE ".text\n";
252 | foreach my $literal (keys %literal_labels) {
253 | print ASMFILE "$literal_labels{$literal}:\n .word $literal\n";
254 | }
255 |
256 | close(ASMFILE) or exit 1;
257 |
--------------------------------------------------------------------------------
/h265_ex3.mp4:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/alb423/iFrameExtractor/c64609dd34c2064e8e2680c1f2441aeed628c500/h265_ex3.mp4
--------------------------------------------------------------------------------
/iFrameExtractor-Info.plist:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 | CFBundleDevelopmentRegion
6 | English
7 | CFBundleDisplayName
8 | ${PRODUCT_NAME}
9 | CFBundleExecutable
10 | ${EXECUTABLE_NAME}
11 | CFBundleIconFile
12 |
13 | CFBundleIdentifier
14 | $(PRODUCT_BUNDLE_IDENTIFIER)
15 | CFBundleInfoDictionaryVersion
16 | 6.0
17 | CFBundleName
18 | ${PRODUCT_NAME}
19 | CFBundlePackageType
20 | APPL
21 | CFBundleVersion
22 | 1.0
23 | LSRequiresIPhoneOS
24 |
25 | NSPhotoLibraryUsageDescription
26 | Save SnapShot Image
27 | UIMainStoryboardFile
28 | Storyboard
29 | UIRequiresFullScreen
30 |
31 | UIStatusBarHidden
32 |
33 | UISupportedInterfaceOrientations
34 |
35 | UIInterfaceOrientationLandscapeLeft
36 |
37 |
38 |
39 |
--------------------------------------------------------------------------------
/iFrameExtractor.xcodeproj/project.pbxproj:
--------------------------------------------------------------------------------
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/iFrameExtractor_Prefix.pch:
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1 | //
2 | // Prefix header for all source files of the 'frameExtractor' target in the 'frameExtractor' project
3 | //
4 |
5 | #ifdef __OBJC__
6 | #import
7 | #import
8 | #endif
9 |
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/main.m:
--------------------------------------------------------------------------------
1 | //
2 | // main.m
3 | // iFrameExtractor
4 | //
5 | // Created by lajos on 1/8/10.
6 | //
7 | // Copyright 2010 Lajos Kamocsay
8 | //
9 | // lajos at codza dot com
10 | //
11 | // iFrameExtractor is free software; you can redistribute it and/or
12 | // modify it under the terms of the GNU Lesser General Public
13 | // License as published by the Free Software Foundation; either
14 | // version 2.1 of the License, or (at your option) any later version.
15 | //
16 | // iFrameExtractor is distributed in the hope that it will be useful,
17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 | // Lesser General Public License for more details.
20 | //
21 |
22 | #import
23 |
24 | int main(int argc, char *argv[]) {
25 |
26 | NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
27 | //int retVal = UIApplicationMain(argc, argv, nil, nil);
28 | int retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate");
29 |
30 | [pool release];
31 | return retVal;
32 | }
33 |
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