winamp/Src/Agave/DecodeFile/ifc_audiostream.h

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2024-09-24 12:54:57 +00:00
#ifndef NULLSOFT_AGAVE_IFC_AUDIOSTREAM_H
#define NULLSOFT_AGAVE_IFC_AUDIOSTREAM_H
#include <bfc/dispatch.h>
class ifc_audiostream : public Dispatchable
{
protected:
ifc_audiostream() {}
~ifc_audiostream() {}
public:
/* returns number of bytes written to buffer.
* a return value of 0 means EOF
*/
size_t ReadAudio(void *buffer, size_t sizeBytes);
size_t ReadAudio(void *buffer, size_t, int *killswitch, int *errorCode);
/* Seeks to a point in the stream in milliseconds
* returns TRUE if successful, FALSE otherwise
*/
int SeekToTimeMs(int millisecs);
/* returns 1 if this stream is seekable using SeekToTime, 0 otherwise
*/
int CanSeek();
public:
DISPATCH_CODES
{
IFC_AUDIOSTREAM_READAUDIO = 10,
IFC_AUDIOSTREAM_READAUDIO2 = 11,
IFC_AUDIOSTREAM_SEEKTOTIMEMS = 20,
IFC_AUDIOSTREAM_CANSEEK = 30,
};
};
inline size_t ifc_audiostream::ReadAudio(void *buffer, size_t sizeBytes)
{
return _call(IFC_AUDIOSTREAM_READAUDIO, (size_t)0, buffer, sizeBytes);
}
inline size_t ifc_audiostream::ReadAudio(void *buffer, size_t sizeBytes, int *killswitch, int *errorCode)
{
void *params[4] = { &buffer, &sizeBytes, &killswitch, &errorCode};
size_t retval;
if (_dispatch(IFC_AUDIOSTREAM_READAUDIO2, &retval, params, 4))
return retval;
else
{
*errorCode=0;
return ReadAudio(buffer, sizeBytes);
}
}
inline int ifc_audiostream::SeekToTimeMs(int millisecs)
{
return _call(IFC_AUDIOSTREAM_SEEKTOTIMEMS, (int)0, millisecs);
}
inline int ifc_audiostream::CanSeek()
{
return _call(IFC_AUDIOSTREAM_CANSEEK, (int)0);
}
#endif