forked from mia/Aegisub
425 lines
16 KiB
C++
425 lines
16 KiB
C++
#include "ffmpegsource.h"
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int FFBase::FrameFromDTS(int64_t ADTS) {
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for (int i = 0; i < (int)FrameToDTS.size(); i++)
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if (FrameToDTS[i].DTS == ADTS)
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return i;
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return -1;
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}
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int FFBase::ClosestFrameFromDTS(int64_t ADTS) {
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int Frame = 0;
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int64_t BestDiff = 0xFFFFFFFFFFFFFFLL;
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for (int i = 0; i < (int)FrameToDTS.size(); i++) {
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int64_t CurrentDiff = FFABS(FrameToDTS[i].DTS - ADTS);
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if (CurrentDiff < BestDiff) {
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BestDiff = CurrentDiff;
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Frame = i;
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}
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}
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return Frame;
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}
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int FFBase::FindClosestKeyFrame(int AFrame) {
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for (int i = AFrame; i > 0; i--)
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if (FrameToDTS[i].KeyFrame)
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return i;
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return 0;
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}
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bool FFBase::LoadFrameInfoFromFile(const char *AVideoCacheFile, const char *ASource, int AVideoTrack) {
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char DefaultCacheFilename[1024];
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sprintf(DefaultCacheFilename, "%s.ffv%dcache", ASource, AVideoTrack);
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if (!strcmp(AVideoCacheFile, ""))
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AVideoCacheFile = DefaultCacheFilename;
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FILE *CacheFile = fopen(AVideoCacheFile, "r");
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if (!CacheFile)
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return false;
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if (fscanf(CacheFile, "%d\r\n", &VI.num_frames) <= 0 || VI.num_frames <= 0) {
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VI.num_frames = 0;
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fclose(CacheFile);
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return false;
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}
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for (int i = 0; i < VI.num_frames; i++) {
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int64_t DTSTemp;
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int KFTemp;
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fscanf(CacheFile, "%lld %d\r\n", &DTSTemp, &KFTemp);
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FrameToDTS.push_back(FrameInfo(DTSTemp, KFTemp != 0));
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}
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fclose(CacheFile);
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return true;
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}
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bool FFBase::SaveFrameInfoToFile(const char *AVideoCacheFile, const char *ASource, int AVideoTrack) {
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char DefaultCacheFilename[1024];
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sprintf(DefaultCacheFilename, "%s.ffv%dcache", ASource, AVideoTrack);
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if (!strcmp(AVideoCacheFile, ""))
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AVideoCacheFile = DefaultCacheFilename;
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FILE *CacheFile = fopen(AVideoCacheFile, "wb");
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if (!CacheFile)
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return false;
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fprintf(CacheFile, "%d\r\n", VI.num_frames);
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for (int i = 0; i < VI.num_frames; i++)
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fprintf(CacheFile, "%lld %d\r\n", FrameToDTS[i].DTS, (int)(FrameToDTS[i].KeyFrame ? 1 : 0));
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fclose(CacheFile);
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return true;
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}
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bool FFBase::SaveTimecodesToFile(const char *ATimecodeFile, int64_t ScaleD, int64_t ScaleN) {
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if (!strcmp(ATimecodeFile, ""))
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return true;
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FILE *TimecodeFile = fopen(ATimecodeFile, "wb");
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if (!TimecodeFile)
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return false;
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for (int i = 0; i < VI.num_frames; i++)
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fprintf(TimecodeFile, "%f\r\n", (FrameToDTS[i].DTS * ScaleD) / (double)ScaleN);
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fclose(TimecodeFile);
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return true;
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}
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static FLAC__StreamDecoderReadStatus FLACStreamDecoderReadCallback(const FLAC__StreamDecoder *ADecoder, FLAC__byte ABuffer[], size_t *ABytes, FFBase *AOwner) {
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if(*ABytes > 0) {
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*ABytes = fread(ABuffer, sizeof(FLAC__byte), *ABytes, AOwner->FCFile);
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if(ferror(AOwner->FCFile))
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return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
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else if(*ABytes == 0)
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return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
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else
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return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
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} else {
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return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
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}
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}
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static FLAC__StreamDecoderSeekStatus FLACStreamDecoderSeekCallback(const FLAC__StreamDecoder *ADecoder, FLAC__uint64 AAbsoluteByteOffset, FFBase *AOwner) {
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if(_fseeki64(AOwner->FCFile, AAbsoluteByteOffset, SEEK_SET) < 0)
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return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
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else
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return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
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}
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static FLAC__StreamDecoderTellStatus FLACStreamDecoderTellCallback(const FLAC__StreamDecoder *ADecoder, FLAC__uint64 *AAbsoluteByteOffset, FFBase *AOwner) {
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__int64 Pos;
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if ((Pos = _ftelli64(AOwner->FCFile)) < 0) {
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return FLAC__STREAM_DECODER_TELL_STATUS_ERROR;
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} else {
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*AAbsoluteByteOffset = (FLAC__uint64)Pos;
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return FLAC__STREAM_DECODER_TELL_STATUS_OK;
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}
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}
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static FLAC__StreamDecoderLengthStatus FLACStreamDecoderLengthCallback(const FLAC__StreamDecoder *ADecoder, FLAC__uint64 *AStreamLength, FFBase *AOwner) {
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__int64 OriginalPos;
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__int64 Length;
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if ((OriginalPos = _ftelli64(AOwner->FCFile)) < 0)
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return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
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_fseeki64(AOwner->FCFile, 0, SEEK_END);
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if ((Length = _ftelli64(AOwner->FCFile)) < 0)
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return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
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_fseeki64(AOwner->FCFile, OriginalPos, SEEK_SET);
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*AStreamLength = Length;
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return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
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}
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static FLAC__bool FLACStreamDecoderEofCallback(const FLAC__StreamDecoder *ADecoder, FFBase *AOwner) {
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return feof(AOwner->FCFile) ? true : false;
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}
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static FLAC__StreamDecoderWriteStatus FLACStreamDecoderWriteCallback(const FLAC__StreamDecoder *ADecoder, const FLAC__Frame *AFrame, const FLAC__int32 *const ABuffer[], FFBase *AOwner) {
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unsigned Blocksize = AFrame->header.blocksize;
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const VideoInfo VI = AOwner->GetVideoInfo();
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int16_t *Buffer = (int16_t *)AOwner->FCBuffer;
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int j = 0;
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while (AOwner->FCCount > 0 && Blocksize > 0) {
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for (int i = 0; i < VI.nchannels; i++)
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*Buffer++ = ABuffer[i][j];
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j++;
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AOwner->FCCount--;
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Blocksize--;
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}
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AOwner->FCBuffer = Buffer;
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return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
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}
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static void FLACStreamDecoderMetadataCallback(const FLAC__StreamDecoder *ADecoder, const FLAC__StreamMetadata *AMetadata, FFBase *AOwner) {
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AOwner->FCError = (AMetadata->data.stream_info.total_samples <= 0);
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}
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static void FLACStreamDecoderErrorCallback(const FLAC__StreamDecoder *ADecoder, FLAC__StreamDecoderErrorStatus AStatus, FFBase *AOwner) {
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AOwner->FCError = true;
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}
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bool FFBase::OpenAudioCache(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
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char DefaultCacheFilename[1024];
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sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
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if (!strcmp(AAudioCacheFile, ""))
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AAudioCacheFile = DefaultCacheFilename;
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// Is an empty file?
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FCFile = fopen(AAudioCacheFile, "rb");
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int64_t CacheSize;
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if (FCFile) {
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_fseeki64(FCFile, 0, SEEK_END);
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CacheSize = _ftelli64(FCFile);
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_fseeki64(FCFile, 0, SEEK_SET);
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if (CacheSize <= 0) {
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fclose(FCFile);
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FCFile = NULL;
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return false;
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}
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} else {
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return false;
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}
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// If FLAC?
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FLACAudioCache = FLAC__stream_decoder_new();
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if (FLAC__stream_decoder_init_stream(FLACAudioCache,
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&(FLAC__StreamDecoderReadCallback)FLACStreamDecoderReadCallback,
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&(FLAC__StreamDecoderSeekCallback)FLACStreamDecoderSeekCallback,
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&(FLAC__StreamDecoderTellCallback)FLACStreamDecoderTellCallback,
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&(FLAC__StreamDecoderLengthCallback)FLACStreamDecoderLengthCallback,
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&(FLAC__StreamDecoderEofCallback)FLACStreamDecoderEofCallback,
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&(FLAC__StreamDecoderWriteCallback)FLACStreamDecoderWriteCallback,
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&(FLAC__StreamDecoderMetadataCallback)FLACStreamDecoderMetadataCallback, &(FLAC__StreamDecoderErrorCallback)FLACStreamDecoderErrorCallback, this) == FLAC__STREAM_DECODER_INIT_STATUS_OK) {
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FCError = true;
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FLAC__stream_decoder_process_until_end_of_metadata(FLACAudioCache);
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if (!FCError) {
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VI.num_audio_samples = FLAC__stream_decoder_get_total_samples(FLACAudioCache);
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AudioCacheType = acFLAC;
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return true;
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}
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}
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FLAC__stream_decoder_delete(FLACAudioCache);
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FLACAudioCache = NULL;
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// Raw audio
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VI.num_audio_samples = VI.AudioSamplesFromBytes(CacheSize);
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AudioCacheType = acRaw;
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RawAudioCache = FCFile;
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FCFile = NULL;
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return true;
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}
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static FLAC__StreamEncoderWriteStatus FLACStreamEncoderWriteCallback(const FLAC__StreamEncoder *ASncoder, const FLAC__byte ABuffer[], size_t ABytes, unsigned ABamples, unsigned ACurrentFrame, FFBase *AOwner) {
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fwrite(ABuffer, sizeof(FLAC__byte), ABytes, AOwner->FCFile);
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if(ferror(AOwner->FCFile))
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return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
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else
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return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
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}
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static FLAC__StreamEncoderSeekStatus FLACStreamEncoderSeekCallback(const FLAC__StreamEncoder *AEncoder, FLAC__uint64 AAbsoluteByteOffset, FFBase *AOwner) {
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if(_fseeki64(AOwner->FCFile, AAbsoluteByteOffset, SEEK_SET) < 0)
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return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
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else
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return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
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}
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static FLAC__StreamEncoderTellStatus FLACStreamEncoderTellCallback(const FLAC__StreamEncoder *AEncoder, FLAC__uint64 *AAbsoluteByteOffset, FFBase *AOwner) {
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__int64 Pos;
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if((Pos = _ftelli64(AOwner->FCFile)) < 0) {
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return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
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} else {
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*AAbsoluteByteOffset = (FLAC__uint64)Pos;
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return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
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}
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}
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FLAC__StreamEncoder *FFBase::NewFLACCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, int ACompression, IScriptEnvironment *Env) {
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char DefaultCacheFilename[1024];
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sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
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if (!strcmp(AAudioCacheFile, ""))
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AAudioCacheFile = DefaultCacheFilename;
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FCFile = fopen(AAudioCacheFile, "wb");
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if (!FCFile)
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Env->ThrowError("FFmpegSource: Failed to open '%s' for writing", AAudioCacheFile);
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FLAC__StreamEncoder *FSE;
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FSE = FLAC__stream_encoder_new();
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FLAC__stream_encoder_set_channels(FSE, VI.nchannels);
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FLAC__stream_encoder_set_bits_per_sample(FSE, VI.BytesPerChannelSample() * 8);
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FLAC__stream_encoder_set_sample_rate(FSE, VI.audio_samples_per_second);
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FLAC__stream_encoder_set_compression_level(FSE, ACompression);
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if (FLAC__stream_encoder_init_stream(FSE, &(FLAC__StreamEncoderWriteCallback)FLACStreamEncoderWriteCallback,
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&(FLAC__StreamEncoderSeekCallback)FLACStreamEncoderSeekCallback,
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&(FLAC__StreamEncoderTellCallback)FLACStreamEncoderTellCallback, NULL, this)
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!= FLAC__STREAM_ENCODER_INIT_STATUS_OK)
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Env->ThrowError("FFmpegSource: Failed to initialize the FLAC encoder for '%s'", AAudioCacheFile);
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return FSE;
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}
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void FFBase::CloseFLACCacheWriter(FLAC__StreamEncoder *AFSE) {
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FLAC__stream_encoder_finish(AFSE);
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FLAC__stream_encoder_delete(AFSE);
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fclose(FCFile);
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FCFile = NULL;
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}
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FILE *FFBase::NewRawCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
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char DefaultCacheFilename[1024];
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sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
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if (!strcmp(AAudioCacheFile, ""))
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AAudioCacheFile = DefaultCacheFilename;
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FILE *RCF = fopen(AAudioCacheFile, "wb");
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if (RCF == NULL)
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Env->ThrowError("FFmpegSource: Failed to open '%s' for writing", AAudioCacheFile);
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return RCF;
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}
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void FFBase::CloseRawCacheWriter(FILE *ARawCache) {
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fclose(ARawCache);
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}
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void FFBase::InitPP(int AWidth, int AHeight, const char *APPString, int AQuality, int APixelFormat, IScriptEnvironment *Env) {
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if (!strcmp(APPString, ""))
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return;
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if (AQuality < 0 || AQuality > PP_QUALITY_MAX)
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Env->ThrowError("FFmpegSource: Quality is out of range");
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PPMode = pp_get_mode_by_name_and_quality((char *)APPString, AQuality);
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if (!PPMode)
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Env->ThrowError("FFmpegSource: Invalid postprocesing settings");
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int Flags = GetPPCPUFlags(Env);
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switch (APixelFormat) {
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case PIX_FMT_YUV420P: Flags |= PP_FORMAT_420; break;
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case PIX_FMT_YUV422P: Flags |= PP_FORMAT_422; break;
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case PIX_FMT_YUV411P: Flags |= PP_FORMAT_411; break;
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case PIX_FMT_YUV444P: Flags |= PP_FORMAT_444; break;
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default:
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Env->ThrowError("FFmpegSource: Input format is not supported for postprocessing");
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}
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PPContext = pp_get_context(VI.width, VI.height, Flags);
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if (avpicture_alloc(&PPPicture, APixelFormat, AWidth, AHeight) < 0)
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Env->ThrowError("FFmpegSource: Failed to allocate picture");
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}
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void FFBase::SetOutputFormat(int ACurrentFormat, IScriptEnvironment *Env) {
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int Loss;
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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);
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switch (BestFormat) {
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case PIX_FMT_YUVJ420P: // stupid yv12 distinctions, also inexplicably completely undeniably incompatible with all other supported output formats
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case PIX_FMT_YUV420P: VI.pixel_type = VideoInfo::CS_I420; break;
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case PIX_FMT_YUYV422: VI.pixel_type = VideoInfo::CS_YUY2; break;
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case PIX_FMT_RGB32: VI.pixel_type = VideoInfo::CS_BGR32; break;
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case PIX_FMT_BGR24: VI.pixel_type = VideoInfo::CS_BGR24; break;
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default:
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Env->ThrowError("FFmpegSource: No suitable output format found");
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}
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if (BestFormat != ACurrentFormat) {
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ConvertToFormat = BestFormat;
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SWS = sws_getContext(VI.width, VI.height, ACurrentFormat, VI.width, VI.height, ConvertToFormat, GetSWSCPUFlags(Env) | SWS_BICUBIC, NULL, NULL, NULL);
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}
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}
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PVideoFrame FFBase::OutputFrame(AVFrame *AFrame, IScriptEnvironment *Env) {
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AVPicture *SrcPicture = (AVPicture *)AFrame;
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if (PPContext) {
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pp_postprocess(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));
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SrcPicture = &PPPicture;
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}
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PVideoFrame Dst = Env->NewVideoFrame(VI);
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if (ConvertToFormat != PIX_FMT_NONE && VI.pixel_type == VideoInfo::CS_I420) {
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uint8_t *DstData[3] = {Dst->GetWritePtr(PLANAR_Y), Dst->GetWritePtr(PLANAR_U), Dst->GetWritePtr(PLANAR_V)};
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int DstStride[3] = {Dst->GetPitch(PLANAR_Y), Dst->GetPitch(PLANAR_U), Dst->GetPitch(PLANAR_V)};
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sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
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} else if (ConvertToFormat != PIX_FMT_NONE) {
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if (VI.IsRGB()) {
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uint8_t *DstData[1] = {Dst->GetWritePtr() + Dst->GetPitch() * (Dst->GetHeight() - 1)};
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int DstStride[1] = {-Dst->GetPitch()};
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sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
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} else {
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uint8_t *DstData[1] = {Dst->GetWritePtr()};
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int DstStride[1] = {Dst->GetPitch()};
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sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
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}
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} else if (VI.pixel_type == VideoInfo::CS_I420) {
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Env->BitBlt(Dst->GetWritePtr(PLANAR_Y), Dst->GetPitch(PLANAR_Y), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(PLANAR_Y), Dst->GetHeight(PLANAR_Y));
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Env->BitBlt(Dst->GetWritePtr(PLANAR_U), Dst->GetPitch(PLANAR_U), SrcPicture->data[1], SrcPicture->linesize[1], Dst->GetRowSize(PLANAR_U), Dst->GetHeight(PLANAR_U));
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Env->BitBlt(Dst->GetWritePtr(PLANAR_V), Dst->GetPitch(PLANAR_V), SrcPicture->data[2], SrcPicture->linesize[2], Dst->GetRowSize(PLANAR_V), Dst->GetHeight(PLANAR_V));
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} else {
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if (VI.IsRGB())
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Env->BitBlt(Dst->GetWritePtr() + Dst->GetPitch() * (Dst->GetHeight() - 1), -Dst->GetPitch(), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(), Dst->GetHeight());
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else
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Env->BitBlt(Dst->GetWritePtr(), Dst->GetPitch(), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(), Dst->GetHeight());
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}
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return Dst;
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}
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void __stdcall FFBase::GetAudio(void* Buf, __int64 Start, __int64 Count, IScriptEnvironment* Env) {
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if (AudioCacheType == acRaw) {
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_fseeki64(RawAudioCache, VI.BytesFromAudioSamples(Start), SEEK_SET);
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fread(Buf, 1, VI.BytesFromAudioSamples(Count), RawAudioCache);
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} else if (AudioCacheType == acFLAC) {
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FCCount = Count;
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FCBuffer = Buf;
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FLAC__stream_decoder_seek_absolute(FLACAudioCache, Start);
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while (FCCount > 0)
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FLAC__stream_decoder_process_single(FLACAudioCache);
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} else {
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Env->ThrowError("FFmpegSource: Audio requested but none available");
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}
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}
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FFBase::FFBase() {
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memset(&VI, 0, sizeof(VI));
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AudioCacheType = acNone;
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FCError = false;
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RawAudioCache = NULL;
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FLACAudioCache = NULL;
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PPContext = NULL;
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PPMode = NULL;
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SWS = NULL;
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DecodingBuffer = new uint8_t[AVCODEC_MAX_AUDIO_FRAME_SIZE];
|
|
FLACBuffer = new FLAC__int32[AVCODEC_MAX_AUDIO_FRAME_SIZE];
|
|
ConvertToFormat = PIX_FMT_NONE;
|
|
memset(&PPPicture, 0, sizeof(PPPicture));
|
|
DecodeFrame = avcodec_alloc_frame();
|
|
}
|
|
|
|
FFBase::~FFBase() {
|
|
delete [] DecodingBuffer;
|
|
delete [] FLACBuffer;
|
|
if (RawAudioCache)
|
|
fclose(RawAudioCache);
|
|
if (FLACAudioCache) {
|
|
FLAC__stream_decoder_finish(FLACAudioCache);
|
|
FLAC__stream_decoder_delete(FLACAudioCache);
|
|
}
|
|
if (FCFile)
|
|
fclose(FCFile);
|
|
if (SWS)
|
|
sws_freeContext(SWS);
|
|
if (PPMode)
|
|
pp_free_mode(PPMode);
|
|
if (PPContext)
|
|
pp_free_context(PPContext);
|
|
avpicture_free(&PPPicture);
|
|
av_free(DecodeFrame);
|
|
}
|