85cc8cb9
 Hu Chunming
ๅ็ไปฃ็
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/*
* Copyright 1993-2015 NVIDIA Corporation. All rights reserved.
*
* Please refer to the NVIDIA end user license agreement (EULA) associated
* with this source code for terms and conditions that govern your use of
* this software. Any use, reproduction, disclosure, or distribution of
* this software and related documentation outside the terms of the EULA
* is strictly prohibited.
*
*/
#include "VideoParser.h"
#include "VideoDecoder.h"
#include "FrameQueue.h"
#include <cstring>
#include <cassert>
VideoParser::VideoParser(VideoDecoder *pVideoDecoder, FrameQueue *pFrameQueue): hParser_(0)
{
assert(0 != pFrameQueue);
oParserData_.pFrameQueue = pFrameQueue;
assert(0 != pVideoDecoder);
oParserData_.pVideoDecoder = pVideoDecoder;
CUVIDPARSERPARAMS oVideoParserParameters;
memset(&oVideoParserParameters, 0, sizeof(CUVIDPARSERPARAMS));
oVideoParserParameters.CodecType = pVideoDecoder->codec();
oVideoParserParameters.ulMaxNumDecodeSurfaces = pVideoDecoder->maxDecodeSurfaces();
oVideoParserParameters.ulMaxDisplayDelay = 1; // this flag is needed so the parser will push frames out to the decoder as quickly as it can
oVideoParserParameters.pUserData = &oParserData_;
oVideoParserParameters.pfnSequenceCallback = HandleVideoSequence; // Called before decoding frames and/or whenever there is a format change
oVideoParserParameters.pfnDecodePicture = HandlePictureDecode; // Called when a picture is ready to be decoded (decode order)
oVideoParserParameters.pfnDisplayPicture = HandlePictureDisplay; // Called whenever a picture is ready to be displayed (display order)
CUresult oResult = cuvidCreateVideoParser(&hParser_, &oVideoParserParameters);
assert(CUDA_SUCCESS == oResult);
}
VideoParser::~VideoParser()
{
if ( hParser_ )
{
cuvidDestroyVideoParser( hParser_ );
hParser_ = NULL;
}
return;
}
int VideoParser::ParseVideoData( CUVIDSOURCEDATAPACKET * pkt )
{
CUresult rlt = CUDA_SUCCESS;
rlt = cuvidParseVideoData( hParser_, pkt );
return 0;
}
int
CUDAAPI
VideoParser::HandleVideoSequence(void *pUserData, CUVIDEOFORMAT *pFormat)
{
VideoParserData *pParserData = reinterpret_cast<VideoParserData *>(pUserData);
if ((pFormat->codec != pParserData->pVideoDecoder->codec()) // codec-type
|| (pFormat->coded_width != pParserData->pVideoDecoder->frameWidth())
|| (pFormat->coded_height != pParserData->pVideoDecoder->frameHeight())
|| (pFormat->chroma_format != pParserData->pVideoDecoder->chromaFormat()))
{
// We don't deal with dynamic changes in video format
return 0;
}
return 1;
}
int
CUDAAPI
VideoParser::HandlePictureDecode(void *pUserData, CUVIDPICPARAMS *pPicParams)
{
VideoParserData *pParserData = reinterpret_cast<VideoParserData *>(pUserData);
bool bFrameAvailable = pParserData->pFrameQueue->waitUntilFrameAvailable(pPicParams->CurrPicIdx);
if (!bFrameAvailable)
return false;
pParserData->pVideoDecoder->decodePicture(pPicParams);
return true;
}
int
CUDAAPI
VideoParser::HandlePictureDisplay(void *pUserData, CUVIDPARSERDISPINFO *pPicParams)
{
// std::cout << *pPicParams << std::endl;
VideoParserData *pParserData = reinterpret_cast<VideoParserData *>(pUserData);
pParserData->pFrameQueue->enqueue(pPicParams);
return 1;
}
std::ostream &
operator << (std::ostream &rOutputStream, const CUVIDPARSERDISPINFO &rParserDisplayInfo)
{
rOutputStream << "Picture Index: " << rParserDisplayInfo.picture_index << "\n";
rOutputStream << "Progressive frame: ";
if (rParserDisplayInfo.progressive_frame)
rOutputStream << "true\n";
else
rOutputStream << "false\n";
rOutputStream << "Top field first: ";
if (rParserDisplayInfo.top_field_first)
rOutputStream << "true\n";
else
rOutputStream << "false\n";
rOutputStream << "Repeat first field: ";
if (rParserDisplayInfo.repeat_first_field)
rOutputStream << "true\n";
else
rOutputStream << "false\n";
rOutputStream << "Time stamp: " << rParserDisplayInfo.timestamp << "\n";
return rOutputStream;
}
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