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#ifndef __VIDEO_DECODER_HPP__
#define __VIDEO_DECODER_HPP__
#include <nvcuvid.h>
#include "opencv2/core/private.cuda.hpp"
#include "opencv2/cudacodec.hpp"
namespace cv { namespace cudacodec { namespace detail
{
class VideoDecoder
{
public:
VideoDecoder(const FormatInfo& videoFormat, CUvideoctxlock lock) : lock_(lock), decoder_(0)
{
create(videoFormat);
}
~VideoDecoder()
{
release();
}
void create(const FormatInfo& videoFormat);
void release();
// Get the code-type currently used.
cudaVideoCodec codec() const { return createInfo_.CodecType; }
unsigned long maxDecodeSurfaces() const { return createInfo_.ulNumDecodeSurfaces; }
unsigned long frameWidth() const { return createInfo_.ulWidth; }
unsigned long frameHeight() const { return createInfo_.ulHeight; }
unsigned long targetWidth() const { return createInfo_.ulTargetWidth; }
unsigned long targetHeight() const { return createInfo_.ulTargetHeight; }
cudaVideoChromaFormat chromaFormat() const { return createInfo_.ChromaFormat; }
bool decodePicture(CUVIDPICPARAMS* picParams)
{
return cuvidDecodePicture(decoder_, picParams) == CUDA_SUCCESS;
}
cuda::GpuMat mapFrame(int picIdx, CUVIDPROCPARAMS& videoProcParams)
{
CUdeviceptr ptr;
unsigned int pitch;
cuSafeCall( cuvidMapVideoFrame(decoder_, picIdx, &ptr, &pitch, &videoProcParams) );
return cuda::GpuMat(targetHeight() * 3 / 2, targetWidth(), CV_8UC1, (void*) ptr, pitch);
}
void unmapFrame(cuda::GpuMat& frame)
{
cuSafeCall( cuvidUnmapVideoFrame(decoder_, (CUdeviceptr) frame.data) );
frame.release();
}
private:
CUvideoctxlock lock_;
CUVIDDECODECREATEINFO createInfo_;
CUvideodecoder decoder_;
};
}}}
#endif // __VIDEO_DECODER_HPP__