AVIStreamWrite() private method

private AVIStreamWrite ( IntPtr aviStream, Int32 lStart, Int32 lSamples, IntPtr lpBuffer, Int32 cbBuffer, Int32 dwFlags, Int32 dummy1, Int32 dummy2 ) : int
aviStream System.IntPtr
lStart System.Int32
lSamples System.Int32
lpBuffer System.IntPtr
cbBuffer System.Int32
dwFlags System.Int32
dummy1 System.Int32
dummy2 System.Int32
return int
Avi Class Documentation
Exemplo n.º 1
0
        /// <summary>Add an existing wave audio stream to the file</summary>
        /// <param name="waveData">The new stream's data</param>
        /// <param name="streamInfo">Header info for the new stream</param>
        /// <param name="streamFormat">The new stream' format info</param>
        /// <param name="streamLength">Length of the new stream</param>
        public void AddAudioStream(IntPtr waveData, Avi.AVISTREAMINFO streamInfo, Avi.PCMWAVEFORMAT streamFormat, int streamLength)
        {
            IntPtr aviStream;
            int    result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref streamInfo);

            if (result != 0)
            {
                throw new Exception("Exception in AVIFileCreateStream: " + result.ToString());
            }

            result = Avi.AVIStreamSetFormat(aviStream, 0, ref streamFormat, Marshal.SizeOf(streamFormat));
            if (result != 0)
            {
                throw new Exception("Exception in AVIStreamSetFormat: " + result.ToString());
            }

            result = Avi.AVIStreamWrite(aviStream, 0, streamLength, waveData, streamLength, Avi.AVIIF_KEYFRAME, 0, 0);
            if (result != 0)
            {
                throw new Exception("Exception in AVIStreamWrite: " + result.ToString());
            }

            result = Avi.AVIStreamRelease(aviStream);
            if (result != 0)
            {
                throw new Exception("Exception in AVIStreamRelease: " + result.ToString());
            }
        }
Exemplo n.º 2
0
        /// <summary>Add an existing wave audio stream to the file</summary>
        /// <param name="newStream">The stream to add</param>
        /// <param name="startAtFrameIndex">
        /// The index of the video frame at which the sound is going to start.
        /// '0' inserts the sound at the beginning of the video.
        /// </param>
        public void AddAudioStream(AudioStream newStream, int startAtFrameIndex)
        {
            Avi.AVISTREAMINFO streamInfo   = new Avi.AVISTREAMINFO();
            Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT();
            int streamLength = 0;

            IntPtr rawData  = newStream.GetStreamData(ref streamInfo, ref streamFormat, ref streamLength);
            IntPtr waveData = rawData;

            if (startAtFrameIndex > 0)
            {
                //not supported
                //streamInfo.dwStart = startAtFrameIndex;

                double framesPerSecond  = GetVideoStream().FrameRate;
                double samplesPerSecond = newStream.CountSamplesPerSecond;
                double startAtSecond    = startAtFrameIndex / framesPerSecond;
                int    startAtSample    = (int)(samplesPerSecond * startAtSecond);

                waveData = InsertSilence(startAtSample - 1, waveData, streamLength, ref streamInfo);
            }

            IntPtr aviStream;
            int    result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref streamInfo);

            if (result != 0)
            {
                throw new Exception("Exception in AVIFileCreateStream: " + result.ToString());
            }

            result = Avi.AVIStreamSetFormat(aviStream, 0, ref streamFormat, Marshal.SizeOf(streamFormat));
            if (result != 0)
            {
                throw new Exception("Exception in AVIStreamSetFormat: " + result.ToString());
            }

            result = Avi.AVIStreamWrite(aviStream, 0, streamLength, waveData, streamLength, Avi.AVIIF_KEYFRAME, 0, 0);
            if (result != 0)
            {
                throw new Exception("Exception in AVIStreamWrite: " + result.ToString());
            }

            result = Avi.AVIStreamRelease(aviStream);
            if (result != 0)
            {
                throw new Exception("Exception in AVIStreamRelease: " + result.ToString());
            }

            Marshal.FreeHGlobal(waveData);
        }
Exemplo n.º 3
0
        /// <summary>Add one frame to a new stream</summary>
        /// <param name="bmp"></param>
        /// <remarks>
        /// This works only with uncompressed streams,
        /// and compressed streams that have not been saved yet.
        /// Use DecompressToNewFile to edit saved compressed streams.
        /// </remarks>
        public void AddFrame(Bitmap bmp)
        {
            bmp.RotateFlip(RotateFlipType.RotateNoneFlipY);

            BitmapData bmpDat = bmp.LockBits(
                new Rectangle(
                    0, 0, bmp.Width, bmp.Height),
                ImageLockMode.ReadOnly, bmp.PixelFormat);

            int result = Avi.AVIStreamWrite(writeCompressed ? compressedStream : StreamPointer,
                                            countFrames, 1,
                                            bmpDat.Scan0,
                                            (Int32)(bmpDat.Stride * bmpDat.Height),
                                            0, 0, 0);

            if (result != 0)
            {
                throw new Exception("Exception in VideoStreamWrite: " + result.ToString());
            }

            bmp.UnlockBits(bmpDat);

            countFrames++;
        }