Esempio n. 1
0
        /// <summary>
        /// Version of <see cref="AVISaveOptions(IntPtr, int, int, IntPtr[], IntPtr[])"/> for one stream only.
        /// </summary>
        ///
        /// <param name="stream">Stream to configure.</param>
        /// <param name="options">Stream options.</param>
        ///
        /// <returns>Returns TRUE if the user pressed OK, FALSE for CANCEL, or an error otherwise.</returns>
        public static int AVISaveOptions(IntPtr stream, ref AVICOMPRESSOPTIONS options, IntPtr parentWindow)
        {
            IntPtr[] streams = new IntPtr[1];
            IntPtr[] infPtrs = new IntPtr[1];

            // alloc unmanaged memory
            IntPtr mem = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(AVICOMPRESSOPTIONS)));

            // copy from managed structure to unmanaged memory
            Marshal.StructureToPtr(options, mem, false);

            streams[0] = stream;
            infPtrs[0] = mem;

            // show dialog with a list of available compresors and configuration
            int ret = AVISaveOptions(parentWindow, 0, 1, streams, infPtrs);

            // copy from unmanaged memory to managed structure
            options = (AVICOMPRESSOPTIONS)Marshal.PtrToStructure(mem, typeof(AVICOMPRESSOPTIONS));

            // free AVI compression options
            AVISaveOptionsFree(1, infPtrs);

            // clear it, because the information already freed by AVISaveOptionsFree
            options.format = 0;
            options.parameters = 0;

            // free unmanaged memory
            Marshal.FreeHGlobal(mem);

            return ret;
        }
Esempio n. 2
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 public static extern int AVIMakeCompressedStream(out IntPtr compressedStream, IntPtr sourceStream, ref AVICOMPRESSOPTIONS options, IntPtr clsidHandler);