forked from mia/Aegisub
293 lines
10 KiB
C++
293 lines
10 KiB
C++
// Copyright (c) 2007-2008 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.
|
|
|
|
#include "ffmpegsource.h"
|
|
|
|
int FFBase::FrameFromDTS(int64_t ADTS) {
|
|
for (int i = 0; i < (int)Frames.size(); i++)
|
|
if (Frames[i].DTS == ADTS)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
int FFBase::ClosestFrameFromDTS(int64_t ADTS) {
|
|
int Frame = 0;
|
|
int64_t BestDiff = 0xFFFFFFFFFFFFFFLL; // big number
|
|
for (int i = 0; i < (int)Frames.size(); i++) {
|
|
int64_t CurrentDiff = FFABS(Frames[i].DTS - ADTS);
|
|
if (CurrentDiff < BestDiff) {
|
|
BestDiff = CurrentDiff;
|
|
Frame = i;
|
|
}
|
|
}
|
|
return Frame;
|
|
}
|
|
|
|
int FFBase::FindClosestKeyFrame(int AFrame) {
|
|
for (int i = AFrame; i > 0; i--)
|
|
if (Frames[i].KeyFrame)
|
|
return i;
|
|
return 0;
|
|
}
|
|
|
|
bool FFBase::LoadFrameInfoFromFile(const char *AVideoCacheFile, const char *ASource, int AVideoTrack) {
|
|
char DefaultCacheFilename[1024];
|
|
sprintf(DefaultCacheFilename, "%s.ffv%dcache", ASource, AVideoTrack);
|
|
if (!strcmp(AVideoCacheFile, ""))
|
|
AVideoCacheFile = DefaultCacheFilename;
|
|
|
|
FILE *CacheFile = fopen(AVideoCacheFile, "r");
|
|
if (!CacheFile)
|
|
return false;
|
|
|
|
if (fscanf(CacheFile, "%d\r\n", &VI.num_frames) <= 0 || VI.num_frames <= 0) {
|
|
VI.num_frames = 0;
|
|
fclose(CacheFile);
|
|
return false;
|
|
}
|
|
|
|
for (int i = 0; i < VI.num_frames; i++) {
|
|
int64_t DTSTemp;
|
|
int KFTemp;
|
|
fscanf(CacheFile, "%lld %d\r\n", &DTSTemp, &KFTemp);
|
|
Frames.push_back(FrameInfo(DTSTemp, KFTemp != 0));
|
|
}
|
|
|
|
fclose(CacheFile);
|
|
return true;
|
|
}
|
|
|
|
bool FFBase::SaveFrameInfoToFile(const char *AVideoCacheFile, const char *ASource, int AVideoTrack) {
|
|
char DefaultCacheFilename[1024];
|
|
sprintf(DefaultCacheFilename, "%s.ffv%dcache", ASource, AVideoTrack);
|
|
if (!strcmp(AVideoCacheFile, ""))
|
|
AVideoCacheFile = DefaultCacheFilename;
|
|
|
|
FILE *CacheFile = fopen(AVideoCacheFile, "wb");
|
|
if (!CacheFile)
|
|
return false;
|
|
|
|
fprintf(CacheFile, "%d\r\n", VI.num_frames);
|
|
for (int i = 0; i < VI.num_frames; i++)
|
|
fprintf(CacheFile, "%lld %d\r\n", Frames[i].DTS, (int)(Frames[i].KeyFrame ? 1 : 0));
|
|
|
|
fclose(CacheFile);
|
|
return true;
|
|
}
|
|
|
|
bool FFBase::SaveTimecodesToFile(const char *ATimecodeFile, int64_t ScaleD, int64_t ScaleN) {
|
|
if (!strcmp(ATimecodeFile, ""))
|
|
return true;
|
|
|
|
FILE *TimecodeFile = fopen(ATimecodeFile, "wb");
|
|
if (!TimecodeFile)
|
|
return false;
|
|
|
|
std::set<int64_t> Timecodes;
|
|
for (int i = 0; i < VI.num_frames; i++)
|
|
Timecodes.insert(Frames[i].DTS);
|
|
|
|
fprintf(TimecodeFile, "# timecode format v2\r\n");
|
|
|
|
for (std::set<int64_t>::iterator Cur=Timecodes.begin(); Cur!=Timecodes.end(); Cur++)
|
|
fprintf(TimecodeFile, "%f\r\n", (*Cur * ScaleD) / (double)ScaleN);
|
|
|
|
fclose(TimecodeFile);
|
|
return true;
|
|
}
|
|
|
|
bool FFBase::OpenAudioCache(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
|
|
char DefaultCacheFilename[1024];
|
|
sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
|
|
if (!strcmp(AAudioCacheFile, ""))
|
|
AAudioCacheFile = DefaultCacheFilename;
|
|
|
|
// Is an empty file?
|
|
FILE *FCFile = fopen(AAudioCacheFile, "rb");
|
|
int64_t CacheSize;
|
|
if (FCFile) {
|
|
_fseeki64(FCFile, 0, SEEK_END);
|
|
CacheSize = _ftelli64(FCFile);
|
|
_fseeki64(FCFile, 0, SEEK_SET);
|
|
if (CacheSize <= 0) {
|
|
fclose(FCFile);
|
|
FCFile = NULL;
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
// Raw audio
|
|
VI.num_audio_samples = VI.AudioSamplesFromBytes(CacheSize);
|
|
AudioCacheType = acRaw;
|
|
RawAudioCache = FCFile;
|
|
FCFile = NULL;
|
|
return true;
|
|
}
|
|
|
|
FILE *FFBase::NewRawCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
|
|
char DefaultCacheFilename[1024];
|
|
sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
|
|
if (!strcmp(AAudioCacheFile, ""))
|
|
AAudioCacheFile = DefaultCacheFilename;
|
|
|
|
FILE *RCF = fopen(AAudioCacheFile, "wb");
|
|
if (RCF == NULL)
|
|
Env->ThrowError("FFmpegSource: Failed to open '%s' for writing", AAudioCacheFile);
|
|
return RCF;
|
|
}
|
|
|
|
void FFBase::CloseRawCacheWriter(FILE *ARawCache) {
|
|
fclose(ARawCache);
|
|
}
|
|
|
|
void FFBase::InitPP(int AWidth, int AHeight, const char *APPString, int AQuality, int APixelFormat, IScriptEnvironment *Env) {
|
|
if (!strcmp(APPString, ""))
|
|
return;
|
|
|
|
if (AQuality < 0 || AQuality > PP_QUALITY_MAX)
|
|
Env->ThrowError("FFmpegSource: Quality is out of range");
|
|
|
|
// Unsafe?
|
|
PPMode = pp_get_mode_by_name_and_quality(APPString, AQuality);
|
|
if (!PPMode)
|
|
Env->ThrowError("FFmpegSource: Invalid postprocesing settings");
|
|
|
|
int Flags = GetPPCPUFlags(Env);
|
|
|
|
switch (APixelFormat) {
|
|
case PIX_FMT_YUV420P: Flags |= PP_FORMAT_420; break;
|
|
case PIX_FMT_YUV422P: Flags |= PP_FORMAT_422; break;
|
|
case PIX_FMT_YUV411P: Flags |= PP_FORMAT_411; break;
|
|
case PIX_FMT_YUV444P: Flags |= PP_FORMAT_444; break;
|
|
default:
|
|
Env->ThrowError("FFmpegSource: Input format is not supported for postprocessing");
|
|
}
|
|
|
|
PPContext = pp_get_context(VI.width, VI.height, Flags);
|
|
|
|
if (avpicture_alloc(&PPPicture, APixelFormat, AWidth, AHeight) < 0)
|
|
Env->ThrowError("FFmpegSource: Failed to allocate picture");
|
|
}
|
|
|
|
void FFBase::SetOutputFormat(int ACurrentFormat, IScriptEnvironment *Env) {
|
|
int Loss;
|
|
int BestFormat = avcodec_find_best_pix_fmt((1 << PIX_FMT_YUVJ420P) | (1 << PIX_FMT_YUV420P) | (1 << PIX_FMT_YUYV422) | (1 << PIX_FMT_RGB32) | (1 << PIX_FMT_BGR24), ACurrentFormat, 1 /* Required to prevent pointless RGB32 => RGB24 conversion */, &Loss);
|
|
|
|
switch (BestFormat) {
|
|
case PIX_FMT_YUVJ420P: // stupid yv12 distinctions, also inexplicably completely undeniably incompatible with all other supported output formats
|
|
case PIX_FMT_YUV420P: VI.pixel_type = VideoInfo::CS_I420; break;
|
|
case PIX_FMT_YUYV422: VI.pixel_type = VideoInfo::CS_YUY2; break;
|
|
case PIX_FMT_RGB32: VI.pixel_type = VideoInfo::CS_BGR32; break;
|
|
case PIX_FMT_BGR24: VI.pixel_type = VideoInfo::CS_BGR24; break;
|
|
default:
|
|
Env->ThrowError("FFmpegSource: No suitable output format found");
|
|
}
|
|
|
|
if (BestFormat != ACurrentFormat) {
|
|
ConvertToFormat = BestFormat;
|
|
SWS = sws_getContext(VI.width, VI.height, ACurrentFormat, VI.width, VI.height, ConvertToFormat, GetSWSCPUFlags(Env) | SWS_BICUBIC, NULL, NULL, NULL);
|
|
}
|
|
|
|
if (BestFormat == PIX_FMT_YUVJ420P || BestFormat == PIX_FMT_YUV420P) {
|
|
VI.height -= VI.height & 1;
|
|
VI.width -= VI.width & 1;
|
|
}
|
|
|
|
if (BestFormat == PIX_FMT_YUYV422) {
|
|
VI.width -= VI.width & 1;
|
|
}
|
|
}
|
|
|
|
PVideoFrame FFBase::OutputFrame(AVFrame *AFrame, IScriptEnvironment *Env) {
|
|
AVPicture *SrcPicture = (AVPicture *)AFrame;
|
|
|
|
if (PPContext) {
|
|
pp_postprocess(const_cast<const uint8_t **>(AFrame->data), AFrame->linesize, PPPicture.data, PPPicture.linesize, VI.width, VI.height, AFrame->qscale_table, AFrame->qstride, PPMode, PPContext, AFrame->pict_type | (AFrame->qscale_type ? PP_PICT_TYPE_QP2 : 0));
|
|
SrcPicture = &PPPicture;
|
|
}
|
|
|
|
PVideoFrame Dst = Env->NewVideoFrame(VI);
|
|
|
|
if (ConvertToFormat != PIX_FMT_NONE && VI.pixel_type == VideoInfo::CS_I420) {
|
|
uint8_t *DstData[3] = {Dst->GetWritePtr(PLANAR_Y), Dst->GetWritePtr(PLANAR_U), Dst->GetWritePtr(PLANAR_V)};
|
|
int DstStride[3] = {Dst->GetPitch(PLANAR_Y), Dst->GetPitch(PLANAR_U), Dst->GetPitch(PLANAR_V)};
|
|
sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
|
|
} else if (ConvertToFormat != PIX_FMT_NONE) {
|
|
if (VI.IsRGB()) {
|
|
uint8_t *DstData[1] = {Dst->GetWritePtr() + Dst->GetPitch() * (Dst->GetHeight() - 1)};
|
|
int DstStride[1] = {-Dst->GetPitch()};
|
|
sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
|
|
} else {
|
|
uint8_t *DstData[1] = {Dst->GetWritePtr()};
|
|
int DstStride[1] = {Dst->GetPitch()};
|
|
sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
|
|
}
|
|
} else if (VI.pixel_type == VideoInfo::CS_I420) {
|
|
Env->BitBlt(Dst->GetWritePtr(PLANAR_Y), Dst->GetPitch(PLANAR_Y), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(PLANAR_Y), Dst->GetHeight(PLANAR_Y));
|
|
Env->BitBlt(Dst->GetWritePtr(PLANAR_U), Dst->GetPitch(PLANAR_U), SrcPicture->data[1], SrcPicture->linesize[1], Dst->GetRowSize(PLANAR_U), Dst->GetHeight(PLANAR_U));
|
|
Env->BitBlt(Dst->GetWritePtr(PLANAR_V), Dst->GetPitch(PLANAR_V), SrcPicture->data[2], SrcPicture->linesize[2], Dst->GetRowSize(PLANAR_V), Dst->GetHeight(PLANAR_V));
|
|
} else {
|
|
if (VI.IsRGB())
|
|
Env->BitBlt(Dst->GetWritePtr() + Dst->GetPitch() * (Dst->GetHeight() - 1), -Dst->GetPitch(), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(), Dst->GetHeight());
|
|
else
|
|
Env->BitBlt(Dst->GetWritePtr(), Dst->GetPitch(), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(), Dst->GetHeight());
|
|
}
|
|
|
|
return Dst;
|
|
}
|
|
|
|
void FFBase::GetAudio(void* Buf, __int64 Start, __int64 Count, IScriptEnvironment* Env) {
|
|
if (AudioCacheType == acRaw) {
|
|
_fseeki64(RawAudioCache, VI.BytesFromAudioSamples(Start), SEEK_SET);
|
|
fread(Buf, 1, static_cast<size_t>(VI.BytesFromAudioSamples(Count)), RawAudioCache);
|
|
} else {
|
|
Env->ThrowError("FFmpegSource: Audio requested but none available");
|
|
}
|
|
}
|
|
|
|
FFBase::FFBase() {
|
|
memset(&VI, 0, sizeof(VI));
|
|
AudioCacheType = acNone;
|
|
RawAudioCache = NULL;
|
|
PPContext = NULL;
|
|
PPMode = NULL;
|
|
SWS = NULL;
|
|
LastFrameNum = -1;
|
|
DecodingBuffer = new uint8_t[AVCODEC_MAX_AUDIO_FRAME_SIZE];
|
|
ConvertToFormat = PIX_FMT_NONE;
|
|
memset(&PPPicture, 0, sizeof(PPPicture));
|
|
DecodeFrame = avcodec_alloc_frame();
|
|
}
|
|
|
|
FFBase::~FFBase() {
|
|
delete [] DecodingBuffer;
|
|
if (RawAudioCache)
|
|
fclose(RawAudioCache);
|
|
if (SWS)
|
|
sws_freeContext(SWS);
|
|
if (PPMode)
|
|
pp_free_mode(PPMode);
|
|
if (PPContext)
|
|
pp_free_context(PPContext);
|
|
avpicture_free(&PPPicture);
|
|
av_free(DecodeFrame);
|
|
}
|