Aegisub/aegisub/FFmpegSource2/ffms.cpp

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// Copyright (c) 2007-2009 Fredrik Mellbin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
extern "C" {
#include <libavcodec/avcodec.h>
}
#include "ffms.h"
#include "ffvideosource.h"
#include "ffaudiosource.h"
#include "indexing.h"
#ifdef __UNIX__
#define _snprintf snprintf
#endif
FFMS_API(void) FFMS_Init() {
static bool InitDone = false;
if (!InitDone) {
av_register_all();
av_log_set_level(AV_LOG_QUIET);
}
InitDone = true;
}
FFMS_API(int) FFMS_GetLogLevel() {
return av_log_get_level();
}
FFMS_API(void) FFMS_SetLogLevel(int Level) {
av_log_set_level(AV_LOG_QUIET);
}
FFMS_API(FFVideo *) FFMS_CreateVideoSource(const char *SourceFile, int Track, FFIndex *Index, const char *PP, int Threads, int SeekMode, char *ErrorMsg, unsigned MsgSize) {
try {
switch (Index->Decoder) {
case 0: return new FFLAVFVideo(SourceFile, Track, Index, PP, Threads, SeekMode, ErrorMsg, MsgSize);
case 1: return new FFMatroskaVideo(SourceFile, Track, Index, PP, Threads, ErrorMsg, MsgSize);
#ifdef HAALISOURCE
case 2: return new FFHaaliVideo(SourceFile, Track, Index, PP, Threads, 0, ErrorMsg, MsgSize);
case 3: return new FFHaaliVideo(SourceFile, Track, Index, PP, Threads, 1, ErrorMsg, MsgSize);
#endif
default:
_snprintf(ErrorMsg, MsgSize, "Unsupported format");
return NULL;
}
} catch (...) {
return NULL;
}
}
FFMS_API(FFAudio *) FFMS_CreateAudioSource(const char *SourceFile, int Track, FFIndex *Index, char *ErrorMsg, unsigned MsgSize) {
try {
switch (Index->Decoder) {
case 0: return new FFLAVFAudio(SourceFile, Track, Index, ErrorMsg, MsgSize);
case 1: return new FFMatroskaAudio(SourceFile, Track, Index, ErrorMsg, MsgSize);
default:
_snprintf(ErrorMsg, MsgSize, "Unsupported format");
return NULL;
}
} catch (...) {
return NULL;
}
}
FFMS_API(void) FFMS_DestroyVideoSource(FFVideo *V) {
delete V;
}
FFMS_API(void) FFMS_DestroyAudioSource(FFAudio *A) {
delete A;
}
FFMS_API(const TVideoProperties *) FFMS_GetVideoProperties(FFVideo *V) {
return &V->GetTVideoProperties();
}
FFMS_API(const TAudioProperties *) FFMS_GetAudioProperties(FFAudio *A) {
return &A->GetTAudioProperties();
}
FFMS_API(const TAVFrameLite *) FFMS_GetFrame(FFVideo *V, int n, char *ErrorMsg, unsigned MsgSize) {
return (TAVFrameLite *)V->GetFrame(n, ErrorMsg, MsgSize);
}
FFMS_API(const TAVFrameLite *) FFMS_GetFrameByTime(FFVideo *V, double Time, char *ErrorMsg, unsigned MsgSize) {
return (TAVFrameLite *)V->GetFrameByTime(Time, ErrorMsg, MsgSize);
}
FFMS_API(int) FFMS_GetAudio(FFAudio *A, void *Buf, int64_t Start, int64_t Count, char *ErrorMsg, unsigned MsgSize) {
return A->GetAudio(Buf, Start, Count, ErrorMsg, MsgSize);
}
FFMS_API(int) FFMS_SetOutputFormat(FFVideo *V, int TargetFormat, int Width, int Height, char *ErrorMsg, unsigned MsgSize) {
return V->SetOutputFormat(TargetFormat, Width, Height, ErrorMsg, MsgSize);
}
FFMS_API(void) FFMS_ResetOutputFormat(FFVideo *V) {
V->ResetOutputFormat();
}
FFMS_API(void) FFMS_DestroyFFIndex(FFIndex *Index) {
delete Index;
}
FFMS_API(int) FFMS_GetFirstTrackOfType(FFIndex *Index, int TrackType, char *ErrorMsg, unsigned MsgSize) {
for (int i = 0; i < static_cast<int>(Index->size()); i++)
if ((*Index)[i].TT == TrackType)
return i;
_snprintf(ErrorMsg, MsgSize, "No suitable, indexed track found");
return -1;
}
FFMS_API(int) FFMS_GetFirstIndexedTrackOfType(FFIndex *Index, int TrackType, char *ErrorMsg, unsigned MsgSize) {
for (int i = 0; i < static_cast<int>(Index->size()); i++)
if ((*Index)[i].TT == TrackType && (*Index)[i].size() > 0)
return i;
_snprintf(ErrorMsg, MsgSize, "No suitable, indexed track found");
return -1;
}
FFMS_API(int) FFMS_GetNumTracks(FFIndex *Index) {
return Index->size();
}
FFMS_API(int) FFMS_GetNumTracksI(FFIndexer *Indexer, int Track) {
return Indexer->GetNumberOfTracks();
}
FFMS_API(FFMS_TrackType) FFMS_GetTrackType(FFTrack *T) {
return T->TT;
}
FFMS_API(FFMS_TrackType) FFMS_GetTrackTypeI(FFIndexer *Indexer, int Track) {
return Indexer->GetTrackType(Track);
}
FFMS_API(int) FFMS_GetNumFrames(FFTrack *T) {
return T->size();
}
FFMS_API(const FFFrameInfo *) FFMS_GetFrameInfo(FFTrack *T, int Frame, char *ErrorMsg, unsigned MsgSize) {
if (Frame < 0 || Frame >= static_cast<int>(T->size())) {
_snprintf(ErrorMsg, MsgSize, "Invalid frame specified");
return NULL;
} else {
return reinterpret_cast<FFFrameInfo *>(&(*T)[Frame]);
}
}
FFMS_API(FFTrack *) FFMS_GetTrackFromIndex(FFIndex *Index, int Track, char *ErrorMsg, unsigned MsgSize) {
if (Track < 0 || Track >= static_cast<int>(Index->size())) {
_snprintf(ErrorMsg, MsgSize, "Invalid track specified");
return NULL;
} else {
return &(*Index)[Track];
}
}
FFMS_API(FFTrack *) FFMS_GetTrackFromVideo(FFVideo *V) {
return V->GetFFTrack();
}
FFMS_API(FFTrack *) FFMS_GetTrackFromAudio(FFAudio *A) {
return A->GetFFTrack();
}
FFMS_API(const TTrackTimeBase *) FFMS_GetTimeBase(FFTrack *T) {
return &T->TB;
}
FFMS_API(int) FFMS_WriteTimecodes(FFTrack *T, const char *TimecodeFile, char *ErrorMsg, unsigned MsgSize) {
return T->WriteTimecodes(TimecodeFile, ErrorMsg, MsgSize);
}
FFMS_API(FFIndexer *) FFMS_CreateIndexer(const char *SourceFile, char *ErrorMsg, unsigned MsgSize) {
try {
return FFIndexer::CreateFFIndexer(SourceFile, ErrorMsg, MsgSize);
} catch (...) {
return NULL;
}
}
FFMS_API(FFIndex *) FFMS_DoIndexing(FFIndexer *Indexer, int IndexMask, int DumpMask, const char *AudioFile, bool IgnoreDecodeErrors, TIndexCallback IC, void *Private, char *ErrorMsg, unsigned MsgSize) {
Indexer->SetIndexMask(IndexMask);
Indexer->SetDumpMask(DumpMask);
Indexer->SetIgnoreDecodeErrors(IgnoreDecodeErrors);
Indexer->SetProgressCallback(IC, Private);
FFIndex *Index = Indexer->DoIndexing(AudioFile, ErrorMsg, MsgSize);
delete Indexer;
return Index;
}
FFMS_API(void) FFMS_CancelIndexing(FFIndexer *Indexer) {
delete Indexer;
}
FFMS_API(FFIndex *) FFMS_ReadIndex(const char *IndexFile, char *ErrorMsg, unsigned MsgSize) {
FFIndex *Index = new FFIndex();
if (Index->ReadIndex(IndexFile, ErrorMsg, MsgSize)) {
delete Index;
return NULL;
} else {
return Index;
}
}
FFMS_API(int) FFMS_WriteIndex(const char *IndexFile, FFIndex *Index, char *ErrorMsg, unsigned MsgSize) {
return Index->WriteIndex(IndexFile, ErrorMsg, MsgSize);
}
FFMS_API(int) FFMS_GetPixFmt(const char *Name) {
return avcodec_get_pix_fmt(Name);
}
FFMS_API(FFIndex *) FFMS_MakeIndex(const char *SourceFile, int IndexMask, int DumpMask, const char *AudioFile, bool IgnoreDecodeErrors, TIndexCallback IC, void *Private, char *ErrorMsg, unsigned MsgSize) {
FFIndexer *Indexer = FFMS_CreateIndexer(SourceFile, ErrorMsg, MsgSize);
if (!Indexer)
return NULL;
return FFMS_DoIndexing(Indexer, IndexMask, DumpMask, AudioFile, IgnoreDecodeErrors, IC, Private, ErrorMsg, MsgSize);
}