Aegisub/aegisub/FFmpegSource2/ffms.h

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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.
#ifndef FFMS_H
#define FFMS_H
#include <stdint.h>
#include <libavutil/pixfmt.h>
#ifdef __cplusplus
# define EXTERN_C extern "C"
#else
# define EXTERN_C
#endif
#ifdef _WIN32
# define FFMS_CC __stdcall
# ifdef FFMS_EXPORTS
# define FFMS_API(ret) EXTERN_C __declspec(dllexport) ret FFMS_CC
# else
# define FFMS_API(ret) EXTERN_C __declspec(dllimport) ret FFMS_CC
# endif
#else
# define FFMS_CC
# define FFMS_API(ret) EXTERN_C ret FFMS_CC
#endif
class VideoBase;
class AudioBase;
class FrameIndex;
class FrameInfoVector;
typedef int (FFMS_CC *IndexCallback)(int State, int64_t Current, int64_t Total, void *Private);
enum TrackType {
FFMS_TYPE_VIDEO = 0,
FFMS_TYPE_AUDIO = 1,
};
// This is a subset of the original AVFrame only containing the most used parts.
// Even if it might seem like a good idea to cast it back to a full AVFrame to
// access a few more values you really shouldn't do that. Only the values present
// in AVFrameLite are actually updated when postprocessing is used.
struct AVFrameLite {
uint8_t *Data[4];
int Linesize[4];
uint8_t *Base[4];
int KeyFrame;
int PictType;
};
struct TrackTimeBase {
int64_t Num;
int64_t Den;
};
class FrameInfo {
public:
int64_t DTS;
int64_t SampleStart;
int64_t FilePos;
unsigned int FrameSize;
bool KeyFrame;
FrameInfo(int64_t DTS, bool KeyFrame);
FrameInfo(int64_t DTS, int64_t SampleStart, bool KeyFrame);
FrameInfo(int64_t SampleStart, int64_t FilePos, unsigned int FrameSize, bool KeyFrame);
};
struct VideoProperties {
int Width;
int Height;
int FPSDenominator;
int FPSNumerator;
int NumFrames;
PixelFormat VPixelFormat;
int SARNum;
int SARDen;
int CropTop;
int CropBottom;
int CropLeft;
int CropRight;
double FirstTime;
double LastTime;
};
struct AudioProperties {
int SampleRate;
int Channels;
int BitsPerSample;
bool Float;
int64_t NumSamples;
};
// Most functions return 0 on success
// Functions without error message output can be assumed to never fail
FFMS_API(void) FFMS_Init();
FFMS_API(void) FFMS_NoLog();
FFMS_API(VideoBase *) FFMS_CreateVideoSource(const char *SourceFile, int Track, FrameIndex *TrackIndices, const char *PP, int Threads, int SeekMode, char *ErrorMsg, unsigned MsgSize);
FFMS_API(AudioBase *) FFMS_CreateAudioSource(const char *SourceFile, int Track, FrameIndex *TrackIndices, char *ErrorMsg, unsigned MsgSize);
FFMS_API(void) FFMS_DestroyVideoSource(VideoBase *VB);
FFMS_API(void) FFMS_DestroyAudioSource(AudioBase *AB);
FFMS_API(const VideoProperties *) FFMS_GetVideoProperties(VideoBase *VB);
FFMS_API(const AudioProperties *) FFMS_GetAudioProperties(AudioBase *AB);
FFMS_API(const AVFrameLite *) FFMS_GetFrame(VideoBase *VB, int n, char *ErrorMsg, unsigned MsgSize);
FFMS_API(const AVFrameLite *) FFMS_GetFrameByTime(VideoBase *VB, double Time, char *ErrorMsg, unsigned MsgSize);
FFMS_API(int) FFMS_GetAudio(AudioBase *AB, void *Buf, int64_t Start, int64_t Count, char *ErrorMsg, unsigned MsgSize);
FFMS_API(int) FFMS_SetOutputFormat(VideoBase *VB, int TargetFormat, int Width, int Height, char *ErrorMsg, unsigned MsgSize);
FFMS_API(void) FFMS_ResetOutputFormat(VideoBase *VB);
FFMS_API(void) FFMS_DestroyFrameIndex(FrameIndex *FI);
FFMS_API(int) FFMS_GetFirstTrackOfType(FrameIndex *TrackIndices, int TrackType, char *ErrorMsg, unsigned MsgSize);
FFMS_API(int) FFMS_GetNumTracks(FrameIndex *TrackIndices);
FFMS_API(int) FFMS_GetTrackType(FrameInfoVector *FIV);
FFMS_API(int) FFMS_GetNumFrames(FrameInfoVector *FIV);
FFMS_API(const FrameInfo *) FFMS_GetFrameInfo(FrameInfoVector *FIV, int Frame, char *ErrorMsg, unsigned MsgSize);
FFMS_API(FrameInfoVector *) FFMS_GetTITrackIndex(FrameIndex *TrackIndices, int Track, char *ErrorMsg, unsigned MsgSize);
FFMS_API(FrameInfoVector *) FFMS_GetVSTrackIndex(VideoBase *VB);
FFMS_API(FrameInfoVector *) FFMS_GetASTrackIndex(AudioBase *AB);
FFMS_API(int) FFMS_FindClosestKeyFrame(FrameInfoVector *FIV, int Frame, char *ErrorMsg, unsigned MsgSize);
FFMS_API(int) FFMS_FrameFromDTS(FrameInfoVector *FIV, int64_t DTS);
FFMS_API(int) FFMS_ClosestFrameFromDTS(FrameInfoVector *FIV, int64_t DTS);
FFMS_API(const TrackTimeBase *) FFMS_GetTimeBase(FrameInfoVector *FIV);
FFMS_API(int) FFMS_WriteTimecodes(FrameInfoVector *FIV, const char *TimecodeFile, char *ErrorMsg, unsigned MsgSize);
FFMS_API(FrameIndex *) FFMS_MakeIndex(const char *SourceFile, int IndexMask, int DumpMask, const char *AudioFile, bool IgnoreDecodeErrors, IndexCallback IP, void *Private, char *ErrorMsg, unsigned MsgSize);
FFMS_API(FrameIndex *) FFMS_ReadIndex(const char *IndexFile, char *ErrorMsg, unsigned MsgSize);
FFMS_API(int) FFMS_WriteIndex(const char *IndexFile, FrameIndex *TrackIndices, char *ErrorMsg, unsigned MsgSize);
#endif