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Add function for setting chapter info
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| /* | ||
| * MetaEditor.h | ||
| * AudioBookBinder | ||
| * | ||
| * Created by Oleksandr Tymoshenko on 10-06-09. | ||
| * Copyright 2010 Bluezbox Software. All rights reserved. | ||
| * | ||
| */ | ||
| #ifndef __METAEDITOR__ | ||
| #define __METAEDITOR__ | ||
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| typedef struct { | ||
| uint32_t duration; // milliseconds | ||
| char title[1024]; | ||
| } Chapter; | ||
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| int addChapters(const char *mp4, Chapter *chapters, int count); | ||
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| #endif // __METAEDITOR__ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| /* | ||
| * MetaEditor.cpp | ||
| * AudioBookBinder | ||
| * | ||
| * Created by Oleksandr Tymoshenko on 10-06-09. | ||
| * Copyright 2010 Bluezbox Software. All rights reserved. | ||
| * | ||
| */ | ||
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| extern "C" { | ||
| #include "MetaEditor.h" | ||
| }; | ||
| #include <vector> | ||
| #include <mp4v2/mp4v2.h> | ||
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| using namespace std; | ||
| const double CHAPTERTIMESCALE = 1000.0; | ||
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| extern "C" int setBookInfo(const char *mp4, const char *author, const char *title) | ||
| { | ||
| MP4FileHandle h = MP4Modify( mp4 ); | ||
| fprintf( stderr, "Begin\n"); | ||
| if ( h == MP4_INVALID_FILE_HANDLE ) { | ||
| fprintf( stderr, "Could not open '%s'... aborting\n", mp4 ); | ||
| return -1; | ||
| } | ||
| /* Read out the existing metadata */ | ||
| const MP4Tags* mdata = MP4TagsAlloc(); | ||
| MP4TagsFetch(mdata, h); | ||
| MP4TagsSetArtist(mdata, author); | ||
| /* Write out all tag modifications, free and close */ | ||
| MP4TagsStore( mdata, h ); | ||
| MP4TagsFree( mdata ); | ||
| MP4Close( h ); | ||
| fprintf( stderr, "Done\n"); | ||
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| return 0; | ||
| } | ||
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| int addChapters(const char *mp4, Chapter *chapters, int count) | ||
| { | ||
| MP4FileHandle h = MP4Modify( mp4 ); | ||
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| if( h == MP4_INVALID_FILE_HANDLE ) | ||
| return -1; | ||
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| MP4TrackId refTrackId = MP4_INVALID_TRACK_ID; | ||
| uint32_t trackCount = MP4GetNumberOfTracks( h ); | ||
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| for( uint32_t i = 0; i < trackCount; ++i ) | ||
| { | ||
| MP4TrackId id = MP4FindTrackId( h, i ); | ||
| const char* type = MP4GetTrackType( h, id ); | ||
| if( MP4_IS_AUDIO_TRACK_TYPE( type ) ) | ||
| { | ||
| refTrackId = id; | ||
| break; | ||
| } | ||
| } | ||
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| if( !MP4_IS_VALID_TRACK_ID(refTrackId) ) | ||
| return -1; | ||
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| MP4Duration trackDuration = MP4GetTrackDuration( h, refTrackId ); | ||
| uint32_t trackTimeScale = MP4GetTrackTimeScale( h, refTrackId ); | ||
| NSLog(@"duration: %ld scale: %d", trackDuration, trackTimeScale); | ||
| trackDuration /= trackTimeScale; | ||
| vector<MP4Chapter_t> mp4chapters; | ||
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| for (int i = 0; i < count; i++) | ||
| { | ||
| MP4Chapter_t chap; | ||
| chap.duration = chapters[i].duration; | ||
| strncpy(chap.title, chapters[i].title, sizeof(chap.title)-1); | ||
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| mp4chapters.push_back( chap ); | ||
| } | ||
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| MP4SetChapters(h, &mp4chapters[0], mp4chapters.size(), MP4ChapterTypeQt); | ||
| MP4Close(h); | ||
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| return 0; | ||
| } |