int FFDecHWAccel::decode(Packet &encodedPacket, QByteArray &decoded, bool flush, unsigned)
{
int frameFinished = 0;
decodeFirstStep(encodedPacket, flush);
const int bytes_consumed = avcodec_decode_video2(codec_ctx, frame, &frameFinished, packet);
if (frameFinished)
{
VideoFrame::create(decoded, frame->data, frame->linesize, frame->interlaced_frame, frame->top_field_first);
decodeLastStep(encodedPacket, frame);
}
else
encodedPacket.ts.setInvalid();
return bytes_consumed > 0 ? bytes_consumed : 0;
}
int FFDecSW::decode( Packet &encodedPacket, QByteArray &decoded, bool flush, unsigned hurry_up )
{
int bytes_consumed = 0, frameFinished = 0;
AVPacket packet;
decodeFirstStep( packet, encodedPacket, flush );
switch ( codec_ctx->codec_type )
{
case AVMEDIA_TYPE_AUDIO:
bytes_consumed = avcodec_decode_audio4( codec_ctx, frame, &frameFinished, &packet );
if ( frameFinished )
{
const int samples_with_channels = frame->nb_samples * codec_ctx->channels;
const int decoded_size = samples_with_channels * sizeof( float );
if ( decoded.size() != decoded_size )
decoded.resize( decoded_size );
float *decoded_data = ( float * )decoded.data();
switch ( codec_ctx->sample_fmt )
{
case AV_SAMPLE_FMT_U8:
{
uint8_t *data = ( uint8_t * )*frame->data;
for ( int i = 0 ; i < samples_with_channels ; i++ )
decoded_data[ i ] = ( data[ i ] - 0x7F ) / 128.0f;
} break;
case AV_SAMPLE_FMT_S16:
{
int16_t *data = ( int16_t * )*frame->data;
for ( int i = 0 ; i < samples_with_channels ; i++ )
decoded_data[ i ] = data[ i ] / 32768.0f;
} break;
case AV_SAMPLE_FMT_S32:
{
int32_t *data = ( int32_t * )*frame->data;
for ( int i = 0 ; i < samples_with_channels ; i++ )
decoded_data[ i ] = data[ i ] / 2147483648.0f;
} break;
case AV_SAMPLE_FMT_FLT:
memcpy( decoded_data, *frame->data, decoded_size );
break;
case AV_SAMPLE_FMT_DBL:
{
double *data = ( double * )*frame->data;
for ( int i = 0 ; i < samples_with_channels ; i++ )
decoded_data[ i ] = data[ i ];
} break;
/* Thanks Wang Bin for this patch */
case AV_SAMPLE_FMT_U8P:
{
uint8_t **data = ( uint8_t ** )frame->extended_data;
for ( int i = 0 ; i < frame->nb_samples ; ++i )
for ( int ch = 0; ch < codec_ctx->channels; ++ch )
*decoded_data++ = ( data[ ch ][ i ] - 0x7F ) / 128.0f;
} break;
case AV_SAMPLE_FMT_S16P:
{
int16_t **data = ( int16_t ** )frame->extended_data;
for ( int i = 0; i < frame->nb_samples ; ++i )
for ( int ch = 0 ; ch < codec_ctx->channels ; ++ch )
*decoded_data++ = data[ ch ][ i ] / 32768.0f;
} break;
case AV_SAMPLE_FMT_S32P:
{
int32_t **data = ( int32_t ** )frame->extended_data;
for ( int i = 0 ; i < frame->nb_samples ; ++i )
for ( int ch = 0 ; ch < codec_ctx->channels ; ++ch )
*decoded_data++ = data[ ch ][ i ] / 2147483648.0f;
} break;
case AV_SAMPLE_FMT_FLTP:
{
float **data = ( float ** )frame->extended_data;
for ( int i = 0 ; i < frame->nb_samples ; ++i )
for ( int ch = 0 ; ch < codec_ctx->channels ; ++ch )
*decoded_data++ = data[ ch ][ i ];
} break;
case AV_SAMPLE_FMT_DBLP:
{
double **data = ( double ** )frame->extended_data;
for ( int i = 0 ; i < frame->nb_samples ; ++i )
for ( int ch = 0 ; ch < codec_ctx->channels ; ++ch )
*decoded_data++ = data[ ch ][ i ];
} break;
/**/
default:
decoded.clear();
break;
}
}
break;
case AVMEDIA_TYPE_VIDEO:
{
if ( respectHurryUP && hurry_up )
{
if ( skipFrames && !forceSkipFrames && hurry_up > 1 )
codec_ctx->skip_frame = AVDISCARD_NONREF;
codec_ctx->skip_loop_filter = AVDISCARD_ALL;
if ( hurry_up > 1 )
codec_ctx->skip_idct = AVDISCARD_NONREF;
codec_ctx->flags2 |= CODEC_FLAG2_FAST;
}
else
{
if ( !forceSkipFrames )
codec_ctx->skip_frame = AVDISCARD_DEFAULT;
codec_ctx->skip_loop_filter = codec_ctx->skip_idct = AVDISCARD_DEFAULT;
codec_ctx->flags2 &= ~CODEC_FLAG2_FAST;
}
bytes_consumed = avcodec_decode_video2( codec_ctx, frame, &frameFinished, &packet );
if ( forceSkipFrames ) //Nie możemy pomijać na pierwszej klatce, ponieważ wtedy może nie być odczytany przeplot
codec_ctx->skip_frame = AVDISCARD_NONREF;
if ( frameFinished && ~hurry_up )
{
VideoFrame *videoFrame = VideoFrame::create( decoded, streamInfo->W, streamInfo->H, frame->interlaced_frame, frame->top_field_first );
sws_scale( sws_ctx, frame->data, frame->linesize, 0, frame->height, videoFrame->data, videoFrame->linesize );
}
} break;
default:
break;
}
if ( frameFinished )
{
if ( frame->best_effort_timestamp != QMPLAY2_NOPTS_VALUE )
encodedPacket.ts = frame->best_effort_timestamp * time_base;
}
else
encodedPacket.ts.setInvalid();
if ( bytes_consumed < 0 )
bytes_consumed = 0;
return bytes_consumed;
}
