FISLib_Old/Vinno.vCloud.FIS.CrossPlatform.Windows/LiveVideo/AVFrameOperateUtil.cs

using FFmpeg.AutoGen;

namespace Vinno.vCloud.FIS.CrossPlatform.Windows.LiveVideo
{
    public class AvFrameOperateUtil
    {
        /// <summary>
        /// 创建AVFrame
        /// </summary>
        /// <param name="width"></param>
        /// <param name="height"></param>
        /// <param name="format"></param>
        /// <returns></returns>
        public static unsafe AVFrame* Create(int width, int height, AVPixelFormat format)
        {
            AVFrame* frame = ffmpeg.av_frame_alloc();
            frame->width = width;
            frame->height = height;
            frame->format = (int)format;
            frame->pts = 0;

            var tmpData = new byte_ptrArray4();
            var linesize = new int_array4();
            ffmpeg.av_image_alloc(ref tmpData, ref linesize, frame->width, frame->height, format, 1);

            frame->data.UpdateFrom(tmpData);
            frame->linesize.UpdateFrom(linesize);

            return frame;
        }

        /// <summary>
        /// 销毁AVFrame
        /// </summary>
        /// <param name="frame"></param>
        public static unsafe void Destory(AVFrame* frame)
        {
            if (frame != null)
            {
                ffmpeg.av_frame_unref(frame);
            }
        }
    }
}