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//                           License Agreement
//                For Open Source Computer Vision Library
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#ifndef __CUVUD_VIDEO_SOURCE_H__
#define __CUVUD_VIDEO_SOURCE_H__

#include "precomp.hpp"

#if defined(HAVE_CUDA) && defined(HAVE_NVCUVID)

namespace cv { namespace gpu
{
    namespace detail
    {
        class CuvidVideoSource : public VideoReader_GPU::VideoSource
        {
        public:
            explicit CuvidVideoSource(const std::string& fname);
            ~CuvidVideoSource() { cuvidDestroyVideoSource(videoSource_); }

            VideoReader_GPU::FormatInfo format() const;
            void start();
            void stop();
            bool isStarted() const;
            bool hasError() const;

        private:
            CuvidVideoSource(const CuvidVideoSource&);
            CuvidVideoSource& operator =(const CuvidVideoSource&);

            // Callback for handling packages of demuxed video data.
            //
            // Parameters:
            //      pUserData - Pointer to user data. We must pass a pointer to a
            //          VideoSourceData struct here, that contains a valid CUvideoparser
            //          and FrameQueue.
            //      pPacket - video-source data packet.
            //
            // NOTE: called from a different thread that doesn't not have a cuda context
            //
            static int CUDAAPI HandleVideoData(void* pUserData, CUVIDSOURCEDATAPACKET* pPacket);

            CUvideosource videoSource_;
            VideoReader_GPU::FormatInfo format_;
        };
    }
}}

#endif // defined(HAVE_CUDA) && !defined(__APPLE__)

#endif // __CUVUD_VIDEO_SOURCE_H__
