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added on-demand support for non-seeking loading of FFmpeg files. This feature is not on, controlled by ifdefs via the #define EXPERIMENTAL_OD_FFMPEG in Experimental.h

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mchinen
2010-03-19 14:57:10 +00:00
parent 8d25578c63
commit b07f23d6de
8 changed files with 762 additions and 5 deletions
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26
src/FFmpeg.h
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@@ -57,6 +57,8 @@ extern "C" {
#include <wx/checkbox.h>
#include <wx/textctrl.h>
#include "Experimental.h"
// if you needed them, any other audacity header files would go here
/* These defines apply whether or not ffmpeg is available */
@@ -397,6 +399,30 @@ void DropFFmpegLibs();
int ufile_fopen(ByteIOContext **s, const wxString & name, int flags);
int ufile_fopen_input(AVFormatContext **ic_ptr, wxString & name);
//moving from ImportFFmpeg.cpp to FFMpeg.h so other cpp files can use this struct.
#ifdef EXPERIMENTAL_OD_FFMPEG
typedef struct _streamContext
{
bool m_use; // TRUE = this stream will be loaded into Audacity
AVStream *m_stream; // an AVStream *
AVCodecContext *m_codecCtx; // pointer to m_stream->codec
AVPacket m_pkt; // the last AVPacket we read for this stream
int m_pktValid; // is m_pkt valid?
uint8_t *m_pktDataPtr; // pointer into m_pkt.data
int m_pktRemainingSiz;
int64_t m_pts; // the current presentation time of the input stream
int64_t m_ptsOffset; // packets associated with stream are relative to this
int m_frameValid; // is m_decodedVideoFrame/m_decodedAudioSamples valid?
int16_t *m_decodedAudioSamples; // decoded audio samples stored here
unsigned int m_decodedAudioSamplesSiz; // current size of m_decodedAudioSamples
int m_decodedAudioSamplesValidSiz; // # valid bytes in m_decodedAudioSamples
int m_initialchannels; // number of channels allocated when we begin the importing. Assumes that number of channels doesn't change on the fly.
} streamContext;
#endif
#endif // USE_FFMPEG
#endif // __AUDACITY_FFMPEG__