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FFmpegSource 1.11

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Originally committed to SVN as r1556.
This commit is contained in:
Fredrik Mellbin 2007-09-07 20:07:27 +00:00
parent 67d8412a9a
commit 4b87a7a9ad
9 changed files with 427 additions and 316 deletions
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21
FFmpegSource/ffbase.cpp
View file

@ -107,7 +107,7 @@ bool FFBase::SaveTimecodesToFile(const char *ATimecodeFile, int64_t ScaleD, int6
return true;
}
#ifdef FLAC_CACHE
static FLAC__StreamDecoderReadStatus FLACStreamDecoderReadCallback(const FLAC__StreamDecoder *ADecoder, FLAC__byte ABuffer[], size_t *ABytes, FFBase *AOwner) {
if(*ABytes > 0) {
*ABytes = fread(ABuffer, sizeof(FLAC__byte), *ABytes, AOwner->FCFile);
@ -182,6 +182,7 @@ static void FLACStreamDecoderMetadataCallback(const FLAC__StreamDecoder *ADecode
static void FLACStreamDecoderErrorCallback(const FLAC__StreamDecoder *ADecoder, FLAC__StreamDecoderErrorStatus AStatus, FFBase *AOwner) {
AOwner->FCError = true;
}
#endif // FLAC_CACHE
bool FFBase::OpenAudioCache(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
char DefaultCacheFilename[1024];
@ -205,7 +206,8 @@ bool FFBase::OpenAudioCache(const char *AAudioCacheFile, const char *ASource, in
return false;
}
// If FLAC?
#ifdef FLAC_CACHE
// is FLAC?
FLACAudioCache = FLAC__stream_decoder_new();
if (FLAC__stream_decoder_init_stream(FLACAudioCache,
&(FLAC__StreamDecoderReadCallback)FLACStreamDecoderReadCallback,
@ -225,6 +227,7 @@ bool FFBase::OpenAudioCache(const char *AAudioCacheFile, const char *ASource, in
}
FLAC__stream_decoder_delete(FLACAudioCache);
FLACAudioCache = NULL;
#endif // FLAC_CACHE
// Raw audio
VI.num_audio_samples = VI.AudioSamplesFromBytes(CacheSize);
@ -234,6 +237,7 @@ bool FFBase::OpenAudioCache(const char *AAudioCacheFile, const char *ASource, in
return true;
}
#ifdef FLAC_CACHE
static FLAC__StreamEncoderWriteStatus FLACStreamEncoderWriteCallback(const FLAC__StreamEncoder *ASncoder, const FLAC__byte ABuffer[], size_t ABytes, unsigned ABamples, unsigned ACurrentFrame, FFBase *AOwner) {
fwrite(ABuffer, sizeof(FLAC__byte), ABytes, AOwner->FCFile);
if(ferror(AOwner->FCFile))
@ -289,6 +293,7 @@ void FFBase::CloseFLACCacheWriter(FLAC__StreamEncoder *AFSE) {
fclose(FCFile);
FCFile = NULL;
}
#endif // FLAC_CACHE
FILE *FFBase::NewRawCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
char DefaultCacheFilename[1024];
@ -392,16 +397,18 @@ PVideoFrame FFBase::OutputFrame(AVFrame *AFrame, IScriptEnvironment *Env) {
return Dst;
}
void __stdcall FFBase::GetAudio(void* Buf, __int64 Start, __int64 Count, IScriptEnvironment* Env) {
void FFBase::GetAudio(void* Buf, __int64 Start, __int64 Count, IScriptEnvironment* Env) {
if (AudioCacheType == acRaw) {
_fseeki64(RawAudioCache, VI.BytesFromAudioSamples(Start), SEEK_SET);
fread(Buf, 1, VI.BytesFromAudioSamples(Count), RawAudioCache);
#ifdef FLAC_CACHE
} else if (AudioCacheType == acFLAC) {
FCCount = Count;
FCBuffer = Buf;
FLAC__stream_decoder_seek_absolute(FLACAudioCache, Start);
while (FCCount > 0)
FLAC__stream_decoder_process_single(FLACAudioCache);
#endif // FLAC_CACHE
} else {
Env->ThrowError("FFmpegSource: Audio requested but none available");
}
@ -412,12 +419,14 @@ FFBase::FFBase() {
AudioCacheType = acNone;
FCError = false;
RawAudioCache = NULL;
FLACAudioCache = NULL;
PPContext = NULL;
PPMode = NULL;
SWS = NULL;
DecodingBuffer = new uint8_t[AVCODEC_MAX_AUDIO_FRAME_SIZE];
#ifdef FLAC_CACHE
FLACAudioCache = NULL;
FLACBuffer = new FLAC__int32[AVCODEC_MAX_AUDIO_FRAME_SIZE];
#endif // FLAC_CACHE
FCFile = NULL;
ConvertToFormat = PIX_FMT_NONE;
memset(&PPPicture, 0, sizeof(PPPicture));
@ -426,13 +435,15 @@ FFBase::FFBase() {
FFBase::~FFBase() {
delete [] DecodingBuffer;
delete [] FLACBuffer;
if (RawAudioCache)
fclose(RawAudioCache);
#ifdef FLAC_CACHE
delete [] FLACBuffer;
if (FLACAudioCache) {
FLAC__stream_decoder_finish(FLACAudioCache);
FLAC__stream_decoder_delete(FLACAudioCache);
}
#endif // FLAC_CACHE
if (FCFile)
fclose(FCFile);
if (SWS)

520
FFmpegSource/ffmatroskasource.cpp
View file

@ -19,165 +19,208 @@
// THE SOFTWARE.
#include "ffmpegsource.h"
#include "stdiostream.c"
class FFMatroskaSource : public FFBase {
private:
StdIoStream ST;
unsigned int BufferSize;
CompressedStream *VideoCS;
CompressedStream *AudioCS;
int FFMatroskaSource::GetTrackIndex(int Index, unsigned char ATrackType, IScriptEnvironment *Env) {
if (Index == -1)
for (unsigned int i = 0; i < mkv_GetNumTracks(MF); i++)
if (mkv_GetTrackInfo(MF, i)->Type == ATrackType) {
Index = i;
break;
}
AVCodecContext *VideoCodecContext;
if (Index == -1)
Env->ThrowError("FFmpegSource: No %s track found", (ATrackType & TT_VIDEO) ? "video" : "audio");
if (Index <= -2)
return -2;
MatroskaFile *MF;
char ErrorMessage[256];
uint8_t *Buffer;
if (Index >= (int)mkv_GetNumTracks(MF))
Env->ThrowError("FFmpegSource: Invalid %s track number", (ATrackType & TT_VIDEO) ? "video" : "audio");
int CurrentFrame;
TrackInfo *TI = mkv_GetTrackInfo(MF, Index);
int ReadFrame(uint64_t AFilePos, unsigned int AFrameSize, CompressedStream *ACS, IScriptEnvironment *Env);
int DecodeNextFrame(AVFrame *AFrame, int64_t *AFirstStartTime, IScriptEnvironment* Env);
if (TI->Type != ATrackType)
Env->ThrowError("FFmpegSource: Selected track is not %s", (ATrackType & TT_VIDEO) ? "video" : "audio");
int GetTrackIndex(int Index, unsigned char ATrackType, IScriptEnvironment *Env) {
if (Index == -1)
for (unsigned int i = 0; i < mkv_GetNumTracks(MF); i++)
if (mkv_GetTrackInfo(MF, i)->Type == ATrackType) {
Index = i;
break;
}
return Index;
}
if (Index == -1)
Env->ThrowError("FFmpegSource: No %s track found", (ATrackType & TT_VIDEO) ? "video" : "audio");
if (Index <= -2)
return -2;
FFMatroskaSource::FFMatroskaSource(const char *ASource, int AVideoTrack, int AAudioTrack, const char *ATimecodes, bool AVCache, const char *AVideoCache, const char *AAudioCache, int AACCompression, const char *APPString, int AQuality, IScriptEnvironment* Env) {
CurrentFrame = 0;
int VideoTrack;
int AudioTrack;
unsigned int TrackMask = ~0;
AVCodecContext *AudioCodecContext = NULL;
AVCodec *AudioCodec = NULL;
VideoCodecContext = NULL;
AVCodec *VideoCodec = NULL;
TrackInfo *VideoTI = NULL;
BufferSize = 0;
Buffer = NULL;
VideoCS = NULL;
AudioCS = NULL;
if (Index >= (int)mkv_GetNumTracks(MF))
Env->ThrowError("FFmpegSource: Invalid %s track number", (ATrackType & TT_VIDEO) ? "video" : "audio");
memset(&ST,0,sizeof(ST));
ST.base.read = (int (__cdecl *)(InputStream *,ulonglong,void *,int))StdIoRead;
ST.base.scan = (longlong (__cdecl *)(InputStream *,ulonglong,unsigned int))StdIoScan;
ST.base.getcachesize = (unsigned int (__cdecl *)(InputStream *))StdIoGetCacheSize;
ST.base.geterror = (const char *(__cdecl *)(InputStream *))StdIoGetLastError;
ST.base.memalloc = (void *(__cdecl *)(InputStream *,size_t))StdIoMalloc;
ST.base.memrealloc = (void *(__cdecl *)(InputStream *,void *,size_t))StdIoRealloc;
ST.base.memfree = (void (__cdecl *)(InputStream *,void *)) StdIoFree;
ST.base.progress = (int (__cdecl *)(InputStream *,ulonglong,ulonglong))StdIoProgress;
TrackInfo *TI = mkv_GetTrackInfo(MF, Index);
ST.fp = fopen(ASource, "rb");
if (ST.fp == NULL)
Env->ThrowError("FFmpegSource: Can't open '%s': %s", ASource, strerror(errno));
if (TI->Type != ATrackType)
Env->ThrowError("FFmpegSource: Selected track is not %s", (ATrackType & TT_VIDEO) ? "video" : "audio");
setvbuf(ST.fp, NULL, _IOFBF, CACHESIZE);
return Index;
MF = mkv_OpenEx(&ST.base, 0, 0, ErrorMessage, sizeof(ErrorMessage));
if (MF == NULL) {
fclose(ST.fp);
Env->ThrowError("FFmpegSource: Can't parse Matroska file: %s", ErrorMessage);
}
public:
FFMatroskaSource(const char *ASource, int AVideoTrack, int AAudioTrack, const char *ATimecodes, bool AVCache, const char *AVideoCache, const char *AAudioCache, int AACCompression, const char *APPString, int AQuality, IScriptEnvironment* Env) {
CurrentFrame = 0;
int VideoTrack;
int AudioTrack;
unsigned int TrackMask = ~0;
AVCodecContext *AudioCodecContext = NULL;
AVCodec *AudioCodec = NULL;
VideoCodecContext = NULL;
AVCodec *VideoCodec = NULL;
TrackInfo *VideoTI = NULL;
BufferSize = 0;
Buffer = NULL;
VideoCS = NULL;
AudioCS = NULL;
VideoTrack = GetTrackIndex(AVideoTrack, TT_VIDEO, Env);
AudioTrack = GetTrackIndex(AAudioTrack, TT_AUDIO, Env);
memset(&ST,0,sizeof(ST));
ST.base.read = (int (__cdecl *)(InputStream *,ulonglong,void *,int))StdIoRead;
ST.base.scan = (longlong (__cdecl *)(InputStream *,ulonglong,unsigned int))StdIoScan;
ST.base.getcachesize = (unsigned int (__cdecl *)(InputStream *))StdIoGetCacheSize;
ST.base.geterror = (const char *(__cdecl *)(InputStream *))StdIoGetLastError;
ST.base.memalloc = (void *(__cdecl *)(InputStream *,size_t))StdIoMalloc;
ST.base.memrealloc = (void *(__cdecl *)(InputStream *,void *,size_t))StdIoRealloc;
ST.base.memfree = (void (__cdecl *)(InputStream *,void *)) StdIoFree;
ST.base.progress = (int (__cdecl *)(InputStream *,ulonglong,ulonglong))StdIoProgress;
bool VCacheIsValid = true;
bool ACacheIsValid = true;
ST.fp = fopen(ASource, "rb");
if (ST.fp == NULL)
Env->ThrowError("FFmpegSource: Can't open '%s': %s", ASource, strerror(errno));
if (VideoTrack >= 0) {
VCacheIsValid = LoadFrameInfoFromFile(AVideoCache, ASource, VideoTrack);
setvbuf(ST.fp, NULL, _IOFBF, CACHESIZE);
VideoTI = mkv_GetTrackInfo(MF, VideoTrack);
MF = mkv_OpenEx(&ST.base, 0, 0, ErrorMessage, sizeof(ErrorMessage));
if (MF == NULL) {
fclose(ST.fp);
Env->ThrowError("FFmpegSource: Can't parse Matroska file: %s", ErrorMessage);
if (VideoTI->CompEnabled) {
VideoCS = cs_Create(MF, VideoTrack, ErrorMessage, sizeof(ErrorMessage));
if (VideoCS == NULL)
Env->ThrowError("FFmpegSource: Can't create decompressor: %s", ErrorMessage);
}
VideoTrack = GetTrackIndex(AVideoTrack, TT_VIDEO, Env);
AudioTrack = GetTrackIndex(AAudioTrack, TT_AUDIO, Env);
VideoCodecContext = avcodec_alloc_context();
VideoCodecContext->extradata = (uint8_t *)VideoTI->CodecPrivate;
VideoCodecContext->extradata_size = VideoTI->CodecPrivateSize;
bool VCacheIsValid = true;
bool ACacheIsValid = true;
VideoCodec = avcodec_find_decoder(MatroskaToFFCodecID(VideoTI));
if (VideoCodec == NULL)
Env->ThrowError("FFmpegSource: Video codec not found");
if (VideoTrack >= 0) {
VCacheIsValid = LoadFrameInfoFromFile(AVideoCache, ASource, VideoTrack);
if (avcodec_open(VideoCodecContext, VideoCodec) < 0)
Env->ThrowError("FFmpegSource: Could not open video codec");
VideoTI = mkv_GetTrackInfo(MF, VideoTrack);
if (VideoTI->CompEnabled) {
VideoCS = cs_Create(MF, VideoTrack, ErrorMessage, sizeof(ErrorMessage));
if (VideoCS == NULL)
Env->ThrowError("FFmpegSource: Can't create decompressor: %s", ErrorMessage);
}
VideoCodecContext = avcodec_alloc_context();
VideoCodecContext->extradata = (uint8_t *)VideoTI->CodecPrivate;
VideoCodecContext->extradata_size = VideoTI->CodecPrivateSize;
VideoCodec = avcodec_find_decoder(MatroskaToFFCodecID(VideoTI));
if (VideoCodec == NULL)
Env->ThrowError("FFmpegSource: Video codec not found");
if (avcodec_open(VideoCodecContext, VideoCodec) < 0)
Env->ThrowError("FFmpegSource: Could not open video codec");
// Fix for mpeg2 and other formats where decoding a frame is necessary to get information about the stream
if (VideoCodecContext->pix_fmt == PIX_FMT_NONE) {
mkv_SetTrackMask(MF, ~(1 << VideoTrack));
int64_t Dummy;
DecodeNextFrame(DecodeFrame, &Dummy, Env);
mkv_Seek(MF, 0, MKVF_SEEK_TO_PREV_KEYFRAME);
}
VI.image_type = VideoInfo::IT_TFF;
VI.width = VideoTI->AV.Video.PixelWidth;
VI.height = VideoTI->AV.Video.PixelHeight;
VI.fps_denominator = 1;
VI.fps_numerator = 30;
SetOutputFormat(VideoCodecContext->pix_fmt, Env);
InitPP(VI.width, VI.height, APPString, AQuality, VideoCodecContext->pix_fmt, Env);
if (!VCacheIsValid)
TrackMask &= ~(1 << VideoTrack);
// Fix for mpeg2 and other formats where decoding a frame is necessary to get information about the stream
if (VideoCodecContext->pix_fmt == PIX_FMT_NONE) {
mkv_SetTrackMask(MF, ~(1 << VideoTrack));
int64_t Dummy;
DecodeNextFrame(DecodeFrame, &Dummy, Env);
mkv_Seek(MF, 0, MKVF_SEEK_TO_PREV_KEYFRAME);
}
if (AudioTrack >= 0) {
TrackInfo *AudioTI = mkv_GetTrackInfo(MF, AudioTrack);
VI.image_type = VideoInfo::IT_TFF;
VI.width = VideoTI->AV.Video.PixelWidth;
VI.height = VideoTI->AV.Video.PixelHeight;
VI.fps_denominator = 1;
VI.fps_numerator = 30;
if (AudioTI->CompEnabled) {
AudioCS = cs_Create(MF, AudioTrack, ErrorMessage, sizeof(ErrorMessage));
if (AudioCS == NULL)
Env->ThrowError("FFmpegSource: Can't create decompressor: %s", ErrorMessage);
SetOutputFormat(VideoCodecContext->pix_fmt, Env);
InitPP(VI.width, VI.height, APPString, AQuality, VideoCodecContext->pix_fmt, Env);
if (!VCacheIsValid)
TrackMask &= ~(1 << VideoTrack);
}
if (AudioTrack >= 0) {
TrackInfo *AudioTI = mkv_GetTrackInfo(MF, AudioTrack);
if (AudioTI->CompEnabled) {
AudioCS = cs_Create(MF, AudioTrack, ErrorMessage, sizeof(ErrorMessage));
if (AudioCS == NULL)
Env->ThrowError("FFmpegSource: Can't create decompressor: %s", ErrorMessage);
}
AudioCodecContext = avcodec_alloc_context();
AudioCodecContext->extradata = (uint8_t *)AudioTI->CodecPrivate;
AudioCodecContext->extradata_size = AudioTI->CodecPrivateSize;
AudioCodec = avcodec_find_decoder(MatroskaToFFCodecID(AudioTI));
if (AudioCodec == NULL)
Env->ThrowError("FFmpegSource: Audio codec not found");
if (avcodec_open(AudioCodecContext, AudioCodec) < 0)
Env->ThrowError("FFmpegSource: Could not open audio codec");
// Fix for ac3 and other codecs where decoding a block of audio is required to get information about it
if (AudioCodecContext->channels == 0 || AudioCodecContext->sample_rate == 0) {
mkv_SetTrackMask(MF, ~(1 << AudioTrack));
uint64_t StartTime, EndTime, FilePos;
unsigned int Track, FrameFlags, FrameSize;
mkv_ReadFrame(MF, 0, &Track, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags);
uint8_t DecodingBuffer[AVCODEC_MAX_AUDIO_FRAME_SIZE];
int Size = ReadFrame(FilePos, FrameSize, AudioCS, Env);
uint8_t *Data = Buffer;
while (Size > 0) {
int TempOutputBufSize = AVCODEC_MAX_AUDIO_FRAME_SIZE;
int Ret = avcodec_decode_audio2(AudioCodecContext, (int16_t *)DecodingBuffer, &TempOutputBufSize, Data, Size);
if (Ret < 0)
Env->ThrowError("FFmpegSource: Audio decoding error");
Size -= Ret;
Data += Ret;
}
AudioCodecContext = avcodec_alloc_context();
AudioCodecContext->extradata = (uint8_t *)AudioTI->CodecPrivate;
AudioCodecContext->extradata_size = AudioTI->CodecPrivateSize;
mkv_Seek(MF, 0, MKVF_SEEK_TO_PREV_KEYFRAME);
}
AudioCodec = avcodec_find_decoder(MatroskaToFFCodecID(AudioTI));
if (AudioCodec == NULL)
Env->ThrowError("FFmpegSource: Audio codec not found");
VI.nchannels = AudioCodecContext->channels;
VI.audio_samples_per_second = AudioCodecContext->sample_rate;
if (avcodec_open(AudioCodecContext, AudioCodec) < 0)
Env->ThrowError("FFmpegSource: Could not open audio codec");
switch (AudioCodecContext->sample_fmt) {
case SAMPLE_FMT_U8: VI.sample_type = SAMPLE_INT8; AACCompression = -1; break;
case SAMPLE_FMT_S16: VI.sample_type = SAMPLE_INT16; break;
case SAMPLE_FMT_S24: VI.sample_type = SAMPLE_INT24; AACCompression = -1; break;
case SAMPLE_FMT_S32: VI.sample_type = SAMPLE_INT32; AACCompression = -1; break;
case SAMPLE_FMT_FLT: VI.sample_type = SAMPLE_FLOAT; AACCompression = -1; break;
default:
Env->ThrowError("FFmpegSource: Unsupported/unknown sample format");
}
// Fix for ac3 and other codecs where decoding a block of audio is required to get information about it
if (AudioCodecContext->channels == 0 || AudioCodecContext->sample_rate == 0) {
mkv_SetTrackMask(MF, ~(1 << AudioTrack));
uint64_t StartTime, EndTime, FilePos;
unsigned int Track, FrameFlags, FrameSize;
mkv_ReadFrame(MF, 0, &Track, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags);
ACacheIsValid = OpenAudioCache(AAudioCache, ASource, AudioTrack, Env);
if (!ACacheIsValid)
TrackMask &= ~(1 << AudioTrack);
}
uint8_t DecodingBuffer[AVCODEC_MAX_AUDIO_FRAME_SIZE];
mkv_SetTrackMask(MF, TrackMask);
// Needs to be indexed?
if (!ACacheIsValid || !VCacheIsValid) {
#ifdef FLAC_CACHE
FLAC__StreamEncoder *FSE = NULL;
#endif // FLAC_CACHE
FILE *RawCache = NULL;
if (!ACacheIsValid)
if (AACCompression >= 0)
AudioCacheType = acFLAC;
else
AudioCacheType = acRaw;
switch (AudioCacheType) {
#ifdef FLAC_CACHE
case acFLAC: FSE = NewFLACCacheWriter(AAudioCache, ASource, AudioTrack, AACCompression, Env); break;
#endif // FLAC_CACHE
case acRaw: RawCache = NewRawCacheWriter(AAudioCache, ASource, AudioTrack, Env); break;
}
uint64_t StartTime, EndTime, FilePos;
unsigned int Track, FrameFlags, FrameSize;
while (mkv_ReadFrame(MF, 0, &Track, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags) == 0)
if (Track == VideoTrack && !VCacheIsValid) {
FrameToDTS.push_back(FrameInfo(StartTime, (FrameFlags & FRAME_KF) != 0));
VI.num_frames++;
} else if (Track == AudioTrack && !ACacheIsValid) {
int Size = ReadFrame(FilePos, FrameSize, AudioCS, Env);
uint8_t *Data = Buffer;
@ -187,138 +230,79 @@ public:
if (Ret < 0)
Env->ThrowError("FFmpegSource: Audio decoding error");
int DecodedSamples = VI.AudioSamplesFromBytes(TempOutputBufSize);
Size -= Ret;
Data += Ret;
}
VI.num_audio_samples += DecodedSamples;
mkv_Seek(MF, 0, MKVF_SEEK_TO_PREV_KEYFRAME);
if (AudioCacheType == acRaw) {
fwrite(DecodingBuffer, 1, TempOutputBufSize, RawCache);
#ifdef FLAC_CACHE
} else if (AudioCacheType == acFLAC) {
for (int i = 0; i < DecodedSamples * VI.nchannels; i++)
FLACBuffer[i] = ((int16_t *)DecodingBuffer)[i];
FLAC__stream_encoder_process_interleaved(FSE, FLACBuffer, DecodedSamples);
#endif // FLAC_CACHE
}
}
}
VI.nchannels = AudioCodecContext->channels;
VI.audio_samples_per_second = AudioCodecContext->sample_rate;
switch (AudioCodecContext->sample_fmt) {
case SAMPLE_FMT_U8: VI.sample_type = SAMPLE_INT8; AACCompression = -1; break;
case SAMPLE_FMT_S16: VI.sample_type = SAMPLE_INT16; break;
case SAMPLE_FMT_S24: VI.sample_type = SAMPLE_INT24; AACCompression = -1; break;
case SAMPLE_FMT_S32: VI.sample_type = SAMPLE_INT32; AACCompression = -1; break;
case SAMPLE_FMT_FLT: VI.sample_type = SAMPLE_FLOAT; AACCompression = -1; break;
default:
Env->ThrowError("FFmpegSource: Unsupported/unknown sample format");
if (!ACacheIsValid) {
switch (AudioCacheType) {
#ifdef FLAC_CACHE
case acFLAC: CloseFLACCacheWriter(FSE); break;
#endif // FLAC_CACHE
case acRaw: CloseRawCacheWriter(RawCache); break;
}
ACacheIsValid = OpenAudioCache(AAudioCache, ASource, AudioTrack, Env);
if (!ACacheIsValid)
TrackMask &= ~(1 << AudioTrack);
Env->ThrowError("FFmpegSource: Failed to open newly created audio cache for reading");
}
mkv_SetTrackMask(MF, TrackMask);
if (VideoTrack >= 0 && VI.num_frames == 0)
Env->ThrowError("FFmpegSource: Video track contains no frames");
// Needs to be indexed?
if (!ACacheIsValid || !VCacheIsValid) {
if (AudioTrack >= 0 && VI.num_audio_samples == 0)
Env->ThrowError("FFmpegSource: Audio track contains no samples");
FLAC__StreamEncoder *FSE = NULL;
FILE *RawCache = NULL;
if (!ACacheIsValid)
if (AACCompression >= 0)
AudioCacheType = acFLAC;
else
AudioCacheType = acRaw;
if (VideoTrack >= 0)
mkv_Seek(MF, FrameToDTS.front().DTS, MKVF_SEEK_TO_PREV_KEYFRAME);
switch (AudioCacheType) {
case acFLAC: FSE = NewFLACCacheWriter(AAudioCache, ASource, AudioTrack, AACCompression, Env); break;
case acRaw: RawCache = NewRawCacheWriter(AAudioCache, ASource, AudioTrack, Env); break;
}
uint64_t StartTime, EndTime, FilePos;
unsigned int Track, FrameFlags, FrameSize;
while (mkv_ReadFrame(MF, 0, &Track, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags) == 0)
if (Track == VideoTrack && !VCacheIsValid) {
FrameToDTS.push_back(FrameInfo(StartTime, (FrameFlags & FRAME_KF) != 0));
VI.num_frames++;
} else if (Track == AudioTrack && !ACacheIsValid) {
int Size = ReadFrame(FilePos, FrameSize, AudioCS, Env);
uint8_t *Data = Buffer;
while (Size > 0) {
int TempOutputBufSize = AVCODEC_MAX_AUDIO_FRAME_SIZE;
int Ret = avcodec_decode_audio2(AudioCodecContext, (int16_t *)DecodingBuffer, &TempOutputBufSize, Data, Size);
if (Ret < 0)
Env->ThrowError("FFmpegSource: Audio decoding error");
int DecodedSamples = VI.AudioSamplesFromBytes(TempOutputBufSize);
Size -= Ret;
Data += Ret;
VI.num_audio_samples += DecodedSamples;
if (AudioCacheType == acFLAC) {
for (int i = 0; i < DecodedSamples * VI.nchannels; i++)
FLACBuffer[i] = ((int16_t *)DecodingBuffer)[i];
FLAC__stream_encoder_process_interleaved(FSE, FLACBuffer, DecodedSamples);
} else if (AudioCacheType == acRaw) {
fwrite(DecodingBuffer, 1, TempOutputBufSize, RawCache);
}
}
}
if (!ACacheIsValid) {
switch (AudioCacheType) {
case acFLAC: CloseFLACCacheWriter(FSE); break;
case acRaw: CloseRawCacheWriter(RawCache); break;
}
ACacheIsValid = OpenAudioCache(AAudioCache, ASource, AudioTrack, Env);
if (!ACacheIsValid)
Env->ThrowError("FFmpegSource: Failed to open newly created audio cache for reading");
}
if (VideoTrack >= 0 && VI.num_frames == 0)
Env->ThrowError("FFmpegSource: Video track contains no frames");
if (AudioTrack >= 0 && VI.num_audio_samples == 0)
Env->ThrowError("FFmpegSource: Audio track contains no samples");
if (VideoTrack >= 0)
mkv_Seek(MF, FrameToDTS.front().DTS, MKVF_SEEK_TO_PREV_KEYFRAME);
if (AVCache && !VCacheIsValid)
if (!SaveFrameInfoToFile(AVideoCache, ASource, VideoTrack))
Env->ThrowError("FFmpegSource: Failed to write video cache info");
}
if (AudioTrack >= 0) {
avcodec_close(AudioCodecContext);
av_free(AudioCodecContext);
}
if (VideoTrack >= 0) {
mkv_SetTrackMask(MF, ~(1 << VideoTrack));
// Calculate the average framerate
if (FrameToDTS.size() >= 2) {
double DTSDiff = (double)(FrameToDTS.back().DTS - FrameToDTS.front().DTS);
VI.fps_denominator = (unsigned int)(DTSDiff * mkv_TruncFloat(VideoTI->TimecodeScale) / (double)1000 / (double)(VI.num_frames - 1) + 0.5);
VI.fps_numerator = 1000000;
}
if (!SaveTimecodesToFile(ATimecodes, mkv_TruncFloat(VideoTI->TimecodeScale), 1000000))
Env->ThrowError("FFmpegSource: Failed to write timecodes");
}
if (AVCache && !VCacheIsValid)
if (!SaveFrameInfoToFile(AVideoCache, ASource, VideoTrack))
Env->ThrowError("FFmpegSource: Failed to write video cache info");
}
~FFMatroskaSource() {
free(Buffer);
mkv_Close(MF);
fclose(ST.fp);
if (VideoCodecContext)
avcodec_close(VideoCodecContext);
av_free(VideoCodecContext);
if (AudioTrack >= 0) {
avcodec_close(AudioCodecContext);
av_free(AudioCodecContext);
}
PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* Env);
};
if (VideoTrack >= 0) {
mkv_SetTrackMask(MF, ~(1 << VideoTrack));
// Calculate the average framerate
if (FrameToDTS.size() >= 2) {
double DTSDiff = (double)(FrameToDTS.back().DTS - FrameToDTS.front().DTS);
VI.fps_denominator = (unsigned int)(DTSDiff * mkv_TruncFloat(VideoTI->TimecodeScale) / (double)1000 / (double)(VI.num_frames - 1) + 0.5);
VI.fps_numerator = 1000000;
}
if (!SaveTimecodesToFile(ATimecodes, mkv_TruncFloat(VideoTI->TimecodeScale), 1000000))
Env->ThrowError("FFmpegSource: Failed to write timecodes");
}
}
FFMatroskaSource::~FFMatroskaSource() {
free(Buffer);
mkv_Close(MF);
fclose(ST.fp);
if (VideoCodecContext)
avcodec_close(VideoCodecContext);
av_free(VideoCodecContext);
}
int FFMatroskaSource::ReadFrame(uint64_t AFilePos, unsigned int AFrameSize, CompressedStream *ACS, IScriptEnvironment *Env) {
if (ACS) {
@ -401,7 +385,7 @@ Done:
return Ret;
}
PVideoFrame __stdcall FFMatroskaSource::GetFrame(int n, IScriptEnvironment* Env) {
PVideoFrame FFMatroskaSource::GetFrame(int n, IScriptEnvironment* Env) {
bool HasSeeked = false;
if (n < CurrentFrame || FindClosestKeyFrame(n) > CurrentFrame) {
@ -426,53 +410,3 @@ PVideoFrame __stdcall FFMatroskaSource::GetFrame(int n, IScriptEnvironment* Env)
return OutputFrame(DecodeFrame, Env);
}
AVSValue __cdecl CreateFFmpegSource(AVSValue Args, void* UserData, IScriptEnvironment* Env) {
if (!UserData) {
av_register_all();
UserData = (void *)-1;
}
if (!Args[0].Defined())
Env->ThrowError("FFmpegSource: No source specified");
const char *Source = Args[0].AsString();
int VTrack = Args[1].AsInt(-1);
int ATrack = Args[2].AsInt(-2);
const char *Timecodes = Args[3].AsString("");
bool VCache = Args[4].AsBool(true);
const char *VCacheFile = Args[5].AsString("");
const char *ACacheFile = Args[6].AsString("");
int ACCompression = Args[7].AsInt(-1);
const char *PPString = Args[8].AsString("");
int PPQuality = Args[9].AsInt(PP_QUALITY_MAX);
int SeekMode = Args[10].AsInt(1);
if (VTrack <= -2 && ATrack <= -2)
Env->ThrowError("FFmpegSource: No tracks selected");
if (ACCompression < -1 || ACCompression > 8)
Env->ThrowError("FFmpegSource: Invalid audio cache compression selected");
AVFormatContext *FormatContext;
if (av_open_input_file(&FormatContext, Source, NULL, 0, NULL) != 0)
Env->ThrowError("FFmpegSource: Couldn't open %s", Args[0].AsString());
bool IsMatroska = !strcmp(FormatContext->iformat->name, "matroska");
av_close_input_file(FormatContext);
if (IsMatroska)
return new FFMatroskaSource(Source, VTrack, ATrack, Timecodes, VCache, VCacheFile, ACacheFile, ACCompression, PPString, PPQuality, Env);
else
return new FFmpegSource(Source, VTrack, ATrack, Timecodes, VCache, VCacheFile, ACacheFile, ACCompression, PPString, PPQuality, SeekMode, Env);
}
AVSValue __cdecl CreateFFPP(AVSValue Args, void* UserData, IScriptEnvironment* Env) {
return new FFPP(Args[0].AsClip(), Args[1].AsString(""), Args[2].AsInt(PP_QUALITY_MAX), Env);
}
extern "C" __declspec(dllexport) const char* __stdcall AvisynthPluginInit2(IScriptEnvironment* Env) {
Env->AddFunction("FFmpegSource", "[source]s[vtrack]i[atrack]i[timecodes]s[vcache]b[vcachefile]s[acachefile]s[accompression]i[pp]s[ppquality]i[seekmode]i", CreateFFmpegSource, 0);
Env->AddFunction("FFPP", "c[pp]s[ppquality]i", CreateFFPP, 0);
return "FFmpegSource";
};

19
FFmpegSource/ffmpegsource.cpp
View file

@ -126,8 +126,9 @@ FFmpegSource::FFmpegSource(const char *ASource, int AVideoTrack, int AAudioTrack
// Needs to be indexed?
if (!ACacheIsValid || !VCacheIsValid) {
#ifdef FLAC_CACHE
FLAC__StreamEncoder *FSE = NULL;
#endif // FLAC_CACHE
FILE *RawCache = NULL;
if (!ACacheIsValid)
if (AACCompression >= 0)
@ -136,7 +137,9 @@ FFmpegSource::FFmpegSource(const char *ASource, int AVideoTrack, int AAudioTrack
AudioCacheType = acRaw;
switch (AudioCacheType) {
#ifdef FLAC_CACHE
case acFLAC: FSE = NewFLACCacheWriter(AAudioCache, ASource, AudioTrack, AACCompression, Env); break;
#endif // FLAC_CACHE
case acRaw: RawCache = NewRawCacheWriter(AAudioCache, ASource, AudioTrack, Env); break;
}
@ -161,12 +164,14 @@ FFmpegSource::FFmpegSource(const char *ASource, int AVideoTrack, int AAudioTrack
Data += Ret;
VI.num_audio_samples += DecodedSamples;
if (AudioCacheType == acFLAC) {
if (AudioCacheType == acRaw) {
fwrite(DecodingBuffer, 1, TempOutputBufSize, RawCache);
#ifdef FLAC_CACHE
} else if (AudioCacheType == acFLAC) {
for (int i = 0; i < DecodedSamples * VI.nchannels; i++)
FLACBuffer[i] = ((int16_t *)DecodingBuffer)[i];
FLAC__stream_encoder_process_interleaved(FSE, FLACBuffer, DecodedSamples);
} else if (AudioCacheType == acRaw) {
fwrite(DecodingBuffer, 1, TempOutputBufSize, RawCache);
FLAC__stream_encoder_process_interleaved(FSE, FLACBuffer, DecodedSamples);
#endif // FLAC_CACHE
}
}
}
@ -176,7 +181,9 @@ FFmpegSource::FFmpegSource(const char *ASource, int AVideoTrack, int AAudioTrack
if (!ACacheIsValid) {
switch (AudioCacheType) {
#ifdef FLAC_CACHE
case acFLAC: CloseFLACCacheWriter(FSE); break;
#endif // FLAC_CACHE
case acRaw: CloseRawCacheWriter(RawCache); break;
}
@ -249,7 +256,7 @@ Done:
return Ret;
}
PVideoFrame __stdcall FFmpegSource::GetFrame(int n, IScriptEnvironment* Env) {
PVideoFrame FFmpegSource::GetFrame(int n, IScriptEnvironment* Env) {
bool HasSeeked = false;
int ClosestKF = FindClosestKeyFrame(n);

63
FFmpegSource/ffmpegsource.h
View file

@ -1,3 +1,28 @@
// Copyright (c) 2007 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 FFMPEGSOURCE_H
#define FFMPEGSOURCE_H
#define FLAC_CACHE
#include <windows.h>
#include <stdio.h>
#include <vector>
@ -7,14 +32,18 @@
#include <fcntl.h>
#include <io.h>
#ifdef FLAC_CACHE
#include <stream_decoder.h>
#include <stream_encoder.h>
#endif // FLAC_CACHE
extern "C" {
#include <ffmpeg\avformat.h>
#include <ffmpeg\avcodec.h>
#include <ffmpeg\swscale.h>
#include <postproc\postprocess.h>
#include "stdiostream.h"
}
#include "MatroskaParser.h"
@ -50,12 +79,15 @@ private:
protected:
VideoInfo VI;
AVFrame *DecodeFrame;
FILE *RawAudioCache;
FLAC__StreamDecoder *FLACAudioCache;
AudioCacheFormat AudioCacheType;
FILE *RawAudioCache;
#ifdef FLAC_CACHE
FLAC__StreamDecoder *FLACAudioCache;
FLAC__int32 *FLACBuffer;
#endif // FLAC_CACHE
uint8_t *DecodingBuffer;
FLAC__int32 *FLACBuffer;
struct FrameInfo {
int64_t DTS;
@ -73,8 +105,10 @@ protected:
bool SaveTimecodesToFile(const char *ATimecodeFile, int64_t ScaleD, int64_t ScaleN);
bool OpenAudioCache(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env);
#ifdef FLAC_CACHE
FLAC__StreamEncoder *FFBase::NewFLACCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, int ACompression, IScriptEnvironment *Env);
void FFBase::CloseFLACCacheWriter(FLAC__StreamEncoder *AFSE);
#endif // FLAC_CACHE
FILE *FFBase::NewRawCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env);
void FFBase::CloseRawCacheWriter(FILE *ARawCache);
@ -113,3 +147,26 @@ public:
~FFmpegSource();
PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* Env);
};
class FFMatroskaSource : public FFBase {
private:
StdIoStream ST;
unsigned int BufferSize;
CompressedStream *VideoCS;
CompressedStream *AudioCS;
AVCodecContext *VideoCodecContext;
MatroskaFile *MF;
char ErrorMessage[256];
uint8_t *Buffer;
int CurrentFrame;
int ReadFrame(uint64_t AFilePos, unsigned int AFrameSize, CompressedStream *ACS, IScriptEnvironment *Env);
int DecodeNextFrame(AVFrame *AFrame, int64_t *AFirstStartTime, IScriptEnvironment* Env);
int GetTrackIndex(int Index, unsigned char ATrackType, IScriptEnvironment *Env);
public:
FFMatroskaSource(const char *ASource, int AVideoTrack, int AAudioTrack, const char *ATimecodes, bool AVCache, const char *AVideoCache, const char *AAudioCache, int AACCompression, const char *APPString, int AQuality, IScriptEnvironment* Env);
~FFMatroskaSource();
PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* Env);
};
#endif

9
FFmpegSource/ffmpegsource.html
View file

@ -11,9 +11,12 @@ FFmpegSource Documentation
<ul>
<li>1.11<ul>
<li>Now officially uses the MIT license</li>
<li>Much cleaner source</li>
<li>Can be compiled without support for compressing the audio cache with FLAC</li>
<li>Supports more audio formats in matroska</li>
<li>RGB24 output no longer has swapped colors if the video is converted to it for output</li>
<li>RGB24 output no longer has swapped colors if the video is converted to it for output (there still seems to be some bugs lurking when conversion is done with libswscale)</li>
<li>Fixed an access violation on close when no audio is opened (introduced in 1.10)</li>
<li>Updated FFmpeg to rev 10423</li>
</ul></li>
<li>1.10<ul>
@ -222,7 +225,9 @@ tn:64:128:256
<p><b>FFmpeg svn</b> from http://ffmpeg.mplayerhq.hu/</p>
<p><b>Required Configuration:</b>
<p><b>FLAC (optional)</b> from http://flac.sourceforge.net/</p>
<p><b>Required FFmpeg Configuration:</b>
./configure --enable-shared --disable-static --enable-memalign-hack --enable-gpl --enable-swscaler</p>
<p><b>Suggested Additional Options:</b>

2
FFmpegSource/ffpp.cpp
View file

@ -70,7 +70,7 @@ FFPP::~FFPP() {
avpicture_free(&OutputPicture);
}
PVideoFrame __stdcall FFPP::GetFrame(int n, IScriptEnvironment* Env) {
PVideoFrame FFPP::GetFrame(int n, IScriptEnvironment* Env) {
PVideoFrame Src = child->GetFrame(n, Env);
PVideoFrame Dst = Env->NewVideoFrame(vi);

57
FFmpegSource/ffshared.cpp
View file

@ -46,4 +46,59 @@ int GetSWSCPUFlags(IScriptEnvironment *Env) {
CPUFlags |= SWS_CPU_CAPS_3DNOW;
return Flags;
}
}
AVSValue __cdecl CreateFFmpegSource(AVSValue Args, void* UserData, IScriptEnvironment* Env) {
if (!UserData) {
av_register_all();
UserData = (void *)-1;
}
if (!Args[0].Defined())
Env->ThrowError("FFmpegSource: No source specified");
const char *Source = Args[0].AsString();
int VTrack = Args[1].AsInt(-1);
int ATrack = Args[2].AsInt(-2);
const char *Timecodes = Args[3].AsString("");
bool VCache = Args[4].AsBool(true);
const char *VCacheFile = Args[5].AsString("");
const char *ACacheFile = Args[6].AsString("");
int ACCompression = Args[7].AsInt(-1);
const char *PPString = Args[8].AsString("");
int PPQuality = Args[9].AsInt(PP_QUALITY_MAX);
int SeekMode = Args[10].AsInt(1);
if (VTrack <= -2 && ATrack <= -2)
Env->ThrowError("FFmpegSource: No tracks selected");
#ifdef FLAC_CACHE
if (ACCompression < -1 || ACCompression > 8)
#else
if (ACCompression != -1)
#endif // FLAC_CACHE
Env->ThrowError("FFmpegSource: Invalid audio cache compression selected");
AVFormatContext *FormatContext;
if (av_open_input_file(&FormatContext, Source, NULL, 0, NULL) != 0)
Env->ThrowError("FFmpegSource: Couldn't open %s", Args[0].AsString());
bool IsMatroska = !strcmp(FormatContext->iformat->name, "matroska");
av_close_input_file(FormatContext);
if (IsMatroska)
return new FFMatroskaSource(Source, VTrack, ATrack, Timecodes, VCache, VCacheFile, ACacheFile, ACCompression, PPString, PPQuality, Env);
else
return new FFmpegSource(Source, VTrack, ATrack, Timecodes, VCache, VCacheFile, ACacheFile, ACCompression, PPString, PPQuality, SeekMode, Env);
}
AVSValue __cdecl CreateFFPP(AVSValue Args, void* UserData, IScriptEnvironment* Env) {
return new FFPP(Args[0].AsClip(), Args[1].AsString(""), Args[2].AsInt(PP_QUALITY_MAX), Env);
}
extern "C" __declspec(dllexport) const char* __stdcall AvisynthPluginInit2(IScriptEnvironment* Env) {
Env->AddFunction("FFmpegSource", "[source]s[vtrack]i[atrack]i[timecodes]s[vcache]b[vcachefile]s[acachefile]s[accompression]i[pp]s[ppquality]i[seekmode]i", CreateFFmpegSource, 0);
Env->AddFunction("FFPP", "c[pp]s[ppquality]i", CreateFFPP, 0);
return "FFmpegSource";
};

22
FFmpegSource/stdiostream.c
View file

@ -1,6 +1,24 @@
#include "stdiostream.h"
// Copyright (c) 2007 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.
#define CACHESIZE 65536
#include "stdiostream.h"
/* StdIoStream methods */

30
FFmpegSource/stdiostream.h
View file

@ -1,14 +1,40 @@
// Copyright (c) 2007 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 STDIOSTREAM_H
#define STDIOSTREAM_H
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <io.h>
#include "MatroskaParser.h"
#define CACHESIZE 65536
/************\
* Structures *
\************/
/* first we need to create an I/O object that the parser will use to read the
* source file
*/
@ -20,8 +46,6 @@ struct StdIoStream {
typedef struct StdIoStream StdIoStream;
/***********\
* Functions *
\***********/