extern DllExport dirac_decoder_state_t dirac_parse (dirac_decoder_t *decoder)
{
TEST (decoder != NULL);
TEST (decoder->parser != NULL);
DiracParser *parser = static_cast<DiracParser *>(decoder->parser);
while(true)
{
try
{
decoder->state = parser->Parse();
switch (decoder->state)
{
case STATE_BUFFER:
return decoder->state;
break;
case STATE_SEQUENCE:
set_sequence_params(parser, decoder);
decoder->frame_avail = 0;
return decoder->state;
break;
case STATE_PICTURE_START:
/* frame params of the frame being decoded in coding order */
set_frame_params (parser->GetNextFrameParams(), decoder);
decoder->frame_avail = 0;
return decoder->state;
break;
case STATE_PICTURE_AVAIL:
/* frame params of the frame available for display */
set_frame_params (parser->GetNextFrame().GetFparams(), decoder);
set_frame_data (parser, decoder);
if (!parser->GetDecoderParams().FieldCoding() ||
decoder->frame_params.fnum%2)
{
decoder->frame_avail = 1;
return decoder->state;
}
break;
case STATE_INVALID:
return decoder->state;
break;
default:
break;
}
}//try
catch (const DiracException& e)
{
return STATE_INVALID;
}
}
return decoder->state;
}
extern DllExport void dirac_buffer (dirac_decoder_t *decoder, unsigned char *start, unsigned char *end)
{
TEST (decoder != NULL);
TEST (decoder->parser != NULL);
DiracParser *parser = static_cast<DiracParser *>(decoder->parser);
parser->SetBuffer((char *)start, (char *)end);
}
extern DllExport void dirac_skip (dirac_decoder_t *decoder, int skip)
{
TEST (decoder != NULL);
TEST (decoder->parser != NULL);
DiracParser *parser = static_cast<DiracParser *>(decoder->parser);
parser->SetSkip(skip > 0 ? true : false);
}
extern DllExport dirac_decoder_state_t dirac_parse (dirac_decoder_t *decoder)
{
TEST (decoder != NULL);
TEST (decoder->parser != NULL);
DiracParser *parser = static_cast<DiracParser *>(decoder->parser);
decoder->state = parser->Parse();
switch (decoder->state)
{
case STATE_BUFFER:
break;
case STATE_SEQUENCE:
set_sequence_params(parser, decoder);
decoder->frame_avail = 0;
break;
case STATE_PICTURE_START:
/* frame params of the frame being decoded in coding order */
set_frame_params (parser->GetNextFrameParams(), decoder);
decoder->frame_avail = 0;
break;
case STATE_PICTURE_AVAIL:
decoder->frame_avail = 1;
/* frame params of the frame available for display */
set_frame_params (parser->GetNextFrame().GetFparams(), decoder);
set_frame_data (parser, decoder);
break;
case STATE_INVALID:
break;
default:
break;
}
return decoder->state;
}
extern DllExport dirac_decoder_state_t dirac_parse (dirac_decoder_t *decoder)
{
TEST (decoder != NULL);
TEST (decoder->parser != NULL);
DiracParser *parser = static_cast<DiracParser *>(decoder->parser);
unsigned int pic_num;
while(true)
{
try
{
decoder->state = parser->Parse();
switch (decoder->state)
{
case STATE_BUFFER:
return decoder->state;
break;
case STATE_SEQUENCE:
set_sequence_params(parser, decoder);
decoder->frame_avail = 0;
return decoder->state;
break;
case STATE_PICTURE_AVAIL:
{
const Picture *my_picture = parser->GetNextPicture();
if (my_picture)
{
pic_num = parser->GetNextPicture()->GetPparams().PictureNum();
decoder->frame_num = pic_num;
set_frame_data (parser, decoder);
/* A full frame is only available if we're doing
* progressive coding or have decoded the second field.
* Will only return when a full frame is available
*/
if (!parser->GetDecoderParams().FieldCoding() ||
pic_num%2)
{
/* Frame number currently available for display */
decoder->frame_num = pic_num;
if (parser->GetDecoderParams().FieldCoding())
decoder->frame_num = pic_num>>1;
decoder->frame_avail = 1;
return decoder->state;
}
}
break;
}
case STATE_INVALID:
return decoder->state;
break;
case STATE_SEQUENCE_END:
return decoder->state;
break;
default:
break;
}
}//try
catch (const DiracException& e)
{
return STATE_INVALID;
}
}
return decoder->state;
}
