Exemple #1
0
        private void Clear()
        {
            format_context     = null;
            p_avformat_context = IntPtr.Zero;

            p_video_codec = IntPtr.Zero;
            p_audio_codec = IntPtr.Zero;

            video_stream_index = -1;
            audio_stream_index = -1;

            video_codec_context = null;
            audio_codec_context = null;

            video_stream = null;
            audio_stream = null;

            p_frame     = IntPtr.Zero;
            p_frame_rgb = IntPtr.Zero;
            p_packet    = IntPtr.Zero;
            if (p_audio_buffer != IntPtr.Zero)
            {
                Marshal.FreeHGlobal(p_audio_buffer);
                p_audio_buffer = IntPtr.Zero;
            }

            video_buffer_manager_ = null;
            audio_buffer_manager_ = null;

            video_rate_  = 24;
            video_scale_ = 1;

            key_frame_list_ = new List <int>();
            key_dts_list_   = new List <long>();

            current_frame_ = 0;

            last_requested_frame_ = 0;

            audio_priority_times_ = 0;
            av_packet_queue_      = new Queue <PacketContainer>();

            thread_end_event_ = new ManualResetEvent(true);
            command_queue_    = new List <Command>();

            fixed_video_width_  = -1;
            fixed_video_height_ = -1;
        }
Exemple #2
0
        private void OpenCodec(string filename)
        {
            AVCodecAPI.av_register_all();

            int error_code = AVCodecAPI.av_open_input_file(out p_avformat_context, filename, IntPtr.Zero, 0, IntPtr.Zero);

            if (error_code != 0)
            {
                throw new AVCodecCannotOpenFileException();
            }
            error_code = AVCodecAPI.av_find_stream_info(p_avformat_context);
            if (error_code < 0)
            {
                throw new AVCodecException();
            }
            format_context = (AVFormatContext)Marshal.PtrToStructure(p_avformat_context, typeof(AVFormatContext));

            for (int i = 0; i < format_context.nb_streams; ++i)
            {
                AVStream       stream             = (AVStream)Marshal.PtrToStructure(format_context.streams[i], typeof(AVStream));
                AVCodecContext temp_codec_context = (AVCodecContext)Marshal.PtrToStructure(stream.codec,
                                                                                           typeof(AVCodecContext));
                if (temp_codec_context.codec_type == 0)
                {
                    if (video_stream_index < 0)
                    {
                        video_stream_index  = i;
                        video_stream        = stream;
                        video_codec_context = temp_codec_context;
                    }
                }
                else if (temp_codec_context.codec_type == 1)
                {
                    if (audio_stream_index < 0)
                    {
                        audio_stream_index  = i;
                        audio_stream        = stream;
                        audio_codec_context = temp_codec_context;
                    }
                }
            }

            if (video_stream_index >= 0)
            {
                p_video_codec = AVCodecAPI.avcodec_find_decoder(video_codec_context.codec_id);

                error_code = AVCodecAPI.avcodec_open(video_stream.codec, p_video_codec);
                if (error_code < 0)
                {
                    throw new AVCodecException();
                }
            }

            if (audio_stream_index >= 0)
            {
                p_audio_codec = AVCodecAPI.avcodec_find_decoder(audio_codec_context.codec_id);

                error_code = AVCodecAPI.avcodec_open(audio_stream.codec, p_audio_codec);
                if (error_code < 0)
                {
                    throw new AVCodecException();
                }
            }
        }