Aegisub/aegisub/FFmpegSource2/ffms.cpp
Fredrik Mellbin ab8f6e6239 FFMS2:
Rename lots of things, THIS BREAKS THE AEGISUB BUILD because of changed exported type and function names.
Fixed an uninitialized memory bug that would make it crash on unindexed audio tracks in mastroska.
Made ffms.h C-friendlier.
Exports the start time of an audio track in the audio properties.
Less signedness and type conversion warnings.

Originally committed to SVN as r2940.
2009-05-15 23:11:18 +00:00

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7.1 KiB
C++

// 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
TFrameInfo::TFrameInfo(int64_t DTS, bool KeyFrame) {
this->DTS = DTS;
this->SampleStart = 0;
this->FilePos = 0;
this->FrameSize = 0;
this->KeyFrame = KeyFrame;
}
TFrameInfo::TFrameInfo(int64_t DTS, int64_t SampleStart, bool KeyFrame) {
this->DTS = DTS;
this->SampleStart = SampleStart;
this->FilePos = 0;
this->FrameSize = 0;
this->KeyFrame = KeyFrame;
}
TFrameInfo::TFrameInfo(int64_t SampleStart, int64_t FilePos, unsigned int FrameSize, bool KeyFrame) {
this->DTS = 0;
this->SampleStart = SampleStart;
this->FilePos = FilePos;
this->FrameSize = FrameSize;
this->KeyFrame = KeyFrame;
}
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 FFVideoSource(SourceFile, Track, Index, PP, Threads, SeekMode, ErrorMsg, MsgSize);
case 1: return new MatroskaVideoSource(SourceFile, Track, Index, PP, Threads, ErrorMsg, MsgSize);
#ifdef HAALISOURCE
case 2: return new HaaliVideoSource(SourceFile, Track, Index, PP, Threads, 0, ErrorMsg, MsgSize);
case 3: return new HaaliVideoSource(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 FFAudioSource(SourceFile, Track, Index, ErrorMsg, MsgSize);
case 1: return new MatroskaAudioSource(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_GetTVideoProperties(FFVideo *V) {
return &V->GetTVideoProperties();
}
FFMS_API(const TAudioProperties *) FFMS_GetTAudioProperties(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 track found");
return -1;
}
FFMS_API(int) FFMS_GetNumTracks(FFIndex *Index) {
return Index->size();
}
FFMS_API(int) FFMS_GetTrackType(FFTrack *T) {
return T->TT;
}
FFMS_API(int) FFMS_GetNumFrames(FFTrack *T) {
return T->size();
}
FFMS_API(const TFrameInfo *) FFMS_GetTFrameInfo(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 &(*T)[Frame];
}
}
FFMS_API(FFTrack *) FFMS_GetTITrackIndex(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_GetVSTrackIndex(FFVideo *V) {
return V->GetFFTrack();
}
FFMS_API(int) FFMS_FindClosestKeyFrame(FFTrack *T, int Frame, char *ErrorMsg, unsigned MsgSize) {
if (Frame < 0 || Frame >= static_cast<int>(T->size())) {
_snprintf(ErrorMsg, MsgSize, "Out of range frame specified");
return -1;
} else {
return T->FindClosestKeyFrame(Frame);
}
}
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(FFIndex *) FFMS_MakeIndex(const char *SourceFile, int IndexMask, int DumpMask, const char *AudioFile, bool IgnoreDecodeErrors, TIndexCallback IP, void *Private, char *ErrorMsg, unsigned MsgSize) {
return MakeIndex(SourceFile, IndexMask, DumpMask, AudioFile, IgnoreDecodeErrors, IP, Private, ErrorMsg, MsgSize);
}
FFMS_API(FFIndex *) FFMS_ReadIndex(const char *IndexFile, char *ErrorMsg, unsigned MsgSize) {
return ReadIndex(IndexFile, ErrorMsg, MsgSize);
}
FFMS_API(int) FFMS_WriteIndex(const char *IndexFile, FFIndex *Index, char *ErrorMsg, unsigned MsgSize) {
return WriteIndex(IndexFile, Index, ErrorMsg, MsgSize);
}
FFMS_API(int) FFMS_GetPixFmt(const char *Name) {
return avcodec_get_pix_fmt(Name);
}
FFMS_API(int) FFMS_DefaultAudioName(const char *SourceFile, int Track, const TAudioProperties *AP, char *FileName, unsigned FNSize) {
return 0;
}