2012-10-17 15:12:04 +08:00
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#include "cuvid_video_source.h"
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#include "cu_safe_call.h"
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#if defined(HAVE_CUDA) && !defined(__APPLE__)
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cv::gpu::detail::CuvidVideoSource::CuvidVideoSource(const std::string& fname)
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{
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CUVIDSOURCEPARAMS params;
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std::memset(¶ms, 0, sizeof(CUVIDSOURCEPARAMS));
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// Fill parameter struct
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params.pUserData = this; // will be passed to data handlers
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params.pfnVideoDataHandler = HandleVideoData; // our local video-handler callback
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params.pfnAudioDataHandler = 0;
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// now create the actual source
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CUresult res = cuvidCreateVideoSource(&videoSource_, fname.c_str(), ¶ms);
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if (res == CUDA_ERROR_INVALID_SOURCE)
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throw std::runtime_error("Unsupported video source");
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cuSafeCall( res );
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CUVIDEOFORMAT vidfmt;
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cuSafeCall( cuvidGetSourceVideoFormat(videoSource_, &vidfmt, 0) );
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format_.codec = static_cast<VideoReader_GPU::Codec>(vidfmt.codec);
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format_.chromaFormat = static_cast<VideoReader_GPU::ChromaFormat>(vidfmt.chroma_format);
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format_.width = vidfmt.coded_width;
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format_.height = vidfmt.coded_height;
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}
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cv::gpu::VideoReader_GPU::FormatInfo cv::gpu::detail::CuvidVideoSource::format() const
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{
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return format_;
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}
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void cv::gpu::detail::CuvidVideoSource::start()
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{
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cuSafeCall( cuvidSetVideoSourceState(videoSource_, cudaVideoState_Started) );
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}
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void cv::gpu::detail::CuvidVideoSource::stop()
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{
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cuSafeCall( cuvidSetVideoSourceState(videoSource_, cudaVideoState_Stopped) );
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}
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bool cv::gpu::detail::CuvidVideoSource::isStarted() const
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{
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return (cuvidGetVideoSourceState(videoSource_) == cudaVideoState_Started);
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}
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bool cv::gpu::detail::CuvidVideoSource::hasError() const
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{
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return (cuvidGetVideoSourceState(videoSource_) == cudaVideoState_Error);
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}
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int CUDAAPI cv::gpu::detail::CuvidVideoSource::HandleVideoData(void* userData, CUVIDSOURCEDATAPACKET* packet)
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{
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CuvidVideoSource* thiz = static_cast<CuvidVideoSource*>(userData);
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return thiz->parseVideoData(packet->payload, packet->payload_size, (packet->flags & CUVID_PKT_ENDOFSTREAM) != 0);
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}
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#endif // defined(HAVE_CUDA) && !defined(__APPLE__)
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