static void mmap_release_buffer(AVPacket *pkt)
{
    struct v4l2_buffer buf;
    int res, fd;
    struct buff_data *buf_descriptor = pkt->priv;
    memset(&buf, 0, sizeof(struct v4l2_buffer));
    buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
    buf.memory = V4L2_MEMORY_MMAP;
    buf.index = buf_descriptor->index;
    fd = buf_descriptor->fd;
    av_free(buf_descriptor);
    res = ioctl (fd, VIDIOC_QBUF, &buf);
    if (res < 0) {
        av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n");
    pkt->data = NULL;
    pkt->size = 0;
static void mmap_release_buffer(AVPacket *pkt)
{
    struct v4l2_buffer buf;
    int res, fd;
    struct buff_data *buf_descriptor = pkt->priv;
    memset(&buf, 0, sizeof(struct v4l2_buffer));
    buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
    buf.memory = V4L2_MEMORY_MMAP;
    buf.index = buf_descriptor->index;
    fd = buf_descriptor->fd;
    av_free(buf_descriptor);
    res = ioctl (fd, VIDIOC_QBUF, &buf);
    if (res < 0) {
        av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n");
    pkt->data = NULL;
    pkt->size = 0;
static void FUNC_0(AVPacket *VAR_0)
{
    struct v4l2_buffer VAR_1;
    int VAR_2, VAR_3;
    struct buff_data *VAR_4 = VAR_0->priv;
    memset(&VAR_1, 0, sizeof(struct v4l2_buffer));
    VAR_1.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
    VAR_1.memory = V4L2_MEMORY_MMAP;
    VAR_1.index = VAR_4->index;
    VAR_3 = VAR_4->VAR_3;
    av_free(VAR_4);
    VAR_2 = ioctl (VAR_3, VIDIOC_QBUF, &VAR_1);
    if (VAR_2 < 0) {
        av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n");
    VAR_0->data = NULL;
    VAR_0->size = 0;
static void FUNC_0(AVPacket *VAR_0)
{ struct v4l2_buffer VAR_1; int VAR_2, VAR_3; struct buff_data *VAR_4 = VAR_0->priv; memset(&VAR_1, 0, sizeof(struct v4l2_buffer)); VAR_1.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; VAR_1.memory = V4L2_MEMORY_MMAP; VAR_1.index = VAR_4->index; VAR_3 = VAR_4->VAR_3; av_free(VAR_4); VAR_2 = ioctl (VAR_3, VIDIOC_QBUF, &VAR_1); if (VAR_2 < 0) { av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n"); VAR_0->data = NULL; VAR_0->size = 0;