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/* $Id: HBMpeg2Decoder.cpp,v 1.25 2003/08/23 19:38:47 titer Exp $ */
#include "HBCommon.h"
#include "HBManager.h"
#include "HBMpeg2Decoder.h"
#include "HBFifo.h"
extern "C" {
#include <mpeg2dec/mpeg2.h>
}
#include <ffmpeg/avcodec.h>
HBMpeg2Decoder::HBMpeg2Decoder( HBManager * manager, HBTitleInfo * titleInfo )
: HBThread( "mpeg2decoder" )
{
fManager = manager;
fTitleInfo = titleInfo;
}
void HBMpeg2Decoder::DoWork()
{
/* Statistics */
uint32_t framesSinceLast = 0;
uint32_t framesSinceBegin = 0;
uint64_t lastTime = 0;
uint64_t beginTime = 0;
/* Init buffers */
HBBuffer * mpeg2Buffer = NULL;
HBBuffer * rawBuffer = NULL;
HBBuffer * deinterlacedBuffer = NULL;
HBBuffer * resizedBuffer = NULL;
AVPicture * rawPicture = (AVPicture*) malloc( sizeof( AVPicture ) );
AVPicture * deinterlacedPicture = (AVPicture*) malloc( sizeof( AVPicture ) );
AVPicture * resizedPicture = (AVPicture*) malloc( sizeof( AVPicture ) );
/* Init libmpeg2 */
mpeg2dec_t * handle = mpeg2_init();
const mpeg2_info_t * info = mpeg2_info( handle );
/* libavcodec */
ImgReSampleContext * resampleContext = NULL;
/* NTSC 3:2 pulldown kludge - UGLY ! */
if( fTitleInfo->fScale == 900900 )
{
fTitleInfo->fScale = 1125000;
}
/* Resizing & cropping initializations */
resampleContext = img_resample_full_init( fTitleInfo->fOutWidth, fTitleInfo->fOutHeight,
fTitleInfo->fInWidth, fTitleInfo->fInHeight,
fTitleInfo->fTopCrop, fTitleInfo->fBottomCrop,
fTitleInfo->fLeftCrop, fTitleInfo->fRightCrop );
rawBuffer = new HBBuffer( 3 * fTitleInfo->fInWidth * fTitleInfo->fInHeight / 2 );
deinterlacedBuffer = new HBBuffer( 3 * fTitleInfo->fInWidth * fTitleInfo->fInHeight / 2 );
avpicture_fill( rawPicture, rawBuffer->fData,
PIX_FMT_YUV420P, fTitleInfo->fInWidth, fTitleInfo->fInHeight );
avpicture_fill( deinterlacedPicture, deinterlacedBuffer->fData,
PIX_FMT_YUV420P, fTitleInfo->fInWidth, fTitleInfo->fInHeight );
/* Init statistics */
lastTime = system_time();
beginTime = system_time();
Log( "HBMpeg2Decoder : %dx%d -> %dx%d, %.2f fps",
fTitleInfo->fInWidth, fTitleInfo->fInHeight,
fTitleInfo->fOutWidth, fTitleInfo->fOutHeight,
(float) fTitleInfo->fRate / fTitleInfo->fScale );
/* Main loop */
mpeg2_state_t state;
for( ;; )
{
state = mpeg2_parse( handle );
if( state == STATE_BUFFER )
{
/* Free the previous buffer */
if( mpeg2Buffer )
delete mpeg2Buffer;
/* Get a new one */
if( !( mpeg2Buffer = fTitleInfo->fMpeg2Fifo->Pop() ) )
break;
/* Feed libmpeg2 */
mpeg2_buffer( handle, mpeg2Buffer->fData,
mpeg2Buffer->fData + mpeg2Buffer->fSize );
}
else if( ( state == STATE_SLICE || state == STATE_END ) &&
info->display_fbuf )
{
/* Got a raw picture */
/* Copy it */
/* TODO : make libmpeg2 write directly in our buffer */
memcpy( rawBuffer->fData,
info->display_fbuf->buf[0],
fTitleInfo->fInWidth * fTitleInfo->fInHeight );
memcpy( rawBuffer->fData + fTitleInfo->fInWidth * fTitleInfo->fInHeight,
info->display_fbuf->buf[1],
fTitleInfo->fInWidth * fTitleInfo->fInHeight / 4 );
memcpy( rawBuffer->fData + fTitleInfo->fInWidth * fTitleInfo->fInHeight +
fTitleInfo->fInWidth * fTitleInfo->fInHeight / 4,
info->display_fbuf->buf[2],
fTitleInfo->fInWidth * fTitleInfo->fInHeight / 4 );
resizedBuffer = new HBBuffer( 3 * fTitleInfo->fOutWidth * fTitleInfo->fOutHeight / 2 );
avpicture_fill( resizedPicture, resizedBuffer->fData, PIX_FMT_YUV420P,
fTitleInfo->fOutWidth, fTitleInfo->fOutHeight );
if( fTitleInfo->fDeinterlace )
{
avpicture_deinterlace( deinterlacedPicture, rawPicture, PIX_FMT_YUV420P,
fTitleInfo->fInWidth, fTitleInfo->fInHeight );
img_resample( resampleContext, resizedPicture,
deinterlacedPicture );
}
else
{
img_resample( resampleContext, resizedPicture, rawPicture );
}
/* Send it to the encoder */
if( !( fTitleInfo->fRawFifo->Push( resizedBuffer ) ) )
{
break;
}
/* Update GUI position */
fManager->SetPosition( mpeg2Buffer->fPosition );
/* Statistics every 0.5 second */
framesSinceLast++;
framesSinceBegin++;
if( system_time() - lastTime > 500000 )
{
fManager->SetFrameRate( 1000000 * (float) framesSinceLast /
(float) ( system_time() - lastTime ),
1000000 * (float) framesSinceBegin /
(float) ( system_time() - beginTime ) );
lastTime = system_time();
framesSinceLast = 0;
}
}
else if( state == STATE_INVALID )
{
/* Shouldn't happen on a DVD */
Log( "HBMpeg2Decoder : STATE_INVALID" );
}
}
/* Close libmpeg2 */
mpeg2_close( handle );
/* Close libavcodec */
img_resample_close( resampleContext );
/* Free structures & buffers */
if( mpeg2Buffer ) delete mpeg2Buffer;
if( rawBuffer ) delete rawBuffer;
if( deinterlacedBuffer ) delete deinterlacedBuffer;
if( rawPicture ) free( rawPicture );
if( deinterlacedPicture ) free( deinterlacedPicture );
if( resizedPicture ) free( resizedPicture );
}
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