static int v4l2_set_parameters(AVFormatContext *s1)

{

    struct video_data *s = s1->priv_data;

    struct v4l2_standard standard = { 0 };

    struct v4l2_streamparm streamparm = { 0 };

    struct v4l2_fract *tpf = &streamparm.parm.capture.timeperframe;

    AVRational framerate_q = { 0 };

    int i, ret;



    streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;



    if (s->framerate &&

        (ret = av_parse_video_rate(&framerate_q, s->framerate)) < 0) {

        av_log(s1, AV_LOG_ERROR, "Could not parse framerate '%s'.\n",

               s->framerate);

        return ret;

    }



    if (s->standard) {

        av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set standard: %s\n",

               s->standard);

        /* set tv standard */

        for(i=0;;i++) {

            standard.index = i;

            ret = v4l2_ioctl(s->fd, VIDIOC_ENUMSTD, &standard);

            if (ret < 0 || !av_strcasecmp(standard.name, s->standard))

                break;

        }

        if (ret < 0) {

            av_log(s1, AV_LOG_ERROR, "Unknown standard '%s'\n", s->standard);

            return ret;

        }



        av_log(s1, AV_LOG_DEBUG,

               "The V4L2 driver set standard: %s, id: %"PRIu64"\n",

               s->standard, (uint64_t)standard.id);

        if (v4l2_ioctl(s->fd, VIDIOC_S_STD, &standard.id) < 0) {

            av_log(s1, AV_LOG_ERROR,

                   "The V4L2 driver ioctl set standard(%s) failed\n",

                   s->standard);

            return AVERROR(EIO);

        }

    }



    if (framerate_q.num && framerate_q.den) {

        av_log(s1, AV_LOG_DEBUG, "Setting time per frame to %d/%d\n",

               framerate_q.den, framerate_q.num);

        tpf->numerator   = framerate_q.den;

        tpf->denominator = framerate_q.num;



        if (v4l2_ioctl(s->fd, VIDIOC_S_PARM, &streamparm) != 0) {

            av_log(s1, AV_LOG_ERROR,

                   "ioctl set time per frame(%d/%d) failed\n",

                   framerate_q.den, framerate_q.num);

            return AVERROR(EIO);

        }



        if (framerate_q.num != tpf->denominator ||

            framerate_q.den != tpf->numerator) {

            av_log(s1, AV_LOG_INFO,

                   "The driver changed the time per frame from "

                   "%d/%d to %d/%d\n",

                   framerate_q.den, framerate_q.num,

                   tpf->numerator, tpf->denominator);

        }

    } else {

        if (v4l2_ioctl(s->fd, VIDIOC_G_PARM, &streamparm) != 0) {

            av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_G_PARM): %s\n",

                   strerror(errno));

            return AVERROR(errno);

        }

    }

    s1->streams[0]->avg_frame_rate.num = tpf->denominator;

    s1->streams[0]->avg_frame_rate.den = tpf->numerator;



    return 0;

}

static int v4l2_set_parameters(AVFormatContext *s1)

{

    struct video_data *s = s1->priv_data;

    struct v4l2_standard standard = { 0 };

    struct v4l2_streamparm streamparm = { 0 };

    struct v4l2_fract *tpf = &streamparm.parm.capture.timeperframe;

    AVRational framerate_q = { 0 };

    int i, ret;



    streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;



    if (s->framerate &&

        (ret = av_parse_video_rate(&framerate_q, s->framerate)) < 0) {

        av_log(s1, AV_LOG_ERROR, "Could not parse framerate '%s'.\n",

               s->framerate);

        return ret;

    }



    if (s->standard) {

        av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set standard: %s\n",

               s->standard);

        

        for(i=0;;i++) {

            standard.index = i;

            ret = v4l2_ioctl(s->fd, VIDIOC_ENUMSTD, &standard);

            if (ret < 0 || !av_strcasecmp(standard.name, s->standard))

                break;

        }

        if (ret < 0) {

            av_log(s1, AV_LOG_ERROR, "Unknown standard '%s'\n", s->standard);

            return ret;

        }



        av_log(s1, AV_LOG_DEBUG,

               "The V4L2 driver set standard: %s, id: %"PRIu64"\n",

               s->standard, (uint64_t)standard.id);

        if (v4l2_ioctl(s->fd, VIDIOC_S_STD, &standard.id) < 0) {

            av_log(s1, AV_LOG_ERROR,

                   "The V4L2 driver ioctl set standard(%s) failed\n",

                   s->standard);

            return AVERROR(EIO);

        }

    }



    if (framerate_q.num && framerate_q.den) {

        av_log(s1, AV_LOG_DEBUG, "Setting time per frame to %d/%d\n",

               framerate_q.den, framerate_q.num);

        tpf->numerator   = framerate_q.den;

        tpf->denominator = framerate_q.num;



        if (v4l2_ioctl(s->fd, VIDIOC_S_PARM, &streamparm) != 0) {

            av_log(s1, AV_LOG_ERROR,

                   "ioctl set time per frame(%d/%d) failed\n",

                   framerate_q.den, framerate_q.num);

            return AVERROR(EIO);

        }



        if (framerate_q.num != tpf->denominator ||

            framerate_q.den != tpf->numerator) {

            av_log(s1, AV_LOG_INFO,

                   "The driver changed the time per frame from "

                   "%d/%d to %d/%d\n",

                   framerate_q.den, framerate_q.num,

                   tpf->numerator, tpf->denominator);

        }

    } else {

        if (v4l2_ioctl(s->fd, VIDIOC_G_PARM, &streamparm) != 0) {

            av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_G_PARM): %s\n",

                   strerror(errno));

            return AVERROR(errno);

        }

    }

    s1->streams[0]->avg_frame_rate.num = tpf->denominator;

    s1->streams[0]->avg_frame_rate.den = tpf->numerator;



    return 0;

}

static int FUNC_0(AVFormatContext *VAR_0)

{

    struct video_data *VAR_1 = VAR_0->priv_data;

    struct v4l2_standard VAR_2 = { 0 };

    struct v4l2_streamparm VAR_3 = { 0 };

    struct v4l2_fract *VAR_4 = &VAR_3.parm.capture.timeperframe;

    AVRational framerate_q = { 0 };

    int VAR_5, VAR_6;



    VAR_3.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;



    if (VAR_1->framerate &&

        (VAR_6 = av_parse_video_rate(&framerate_q, VAR_1->framerate)) < 0) {

        av_log(VAR_0, AV_LOG_ERROR, "Could not parse framerate '%VAR_1'.\n",

               VAR_1->framerate);

        return VAR_6;

    }



    if (VAR_1->VAR_2) {

        av_log(VAR_0, AV_LOG_DEBUG, "The V4L2 driver set VAR_2: %VAR_1\n",

               VAR_1->VAR_2);

        

        for(VAR_5=0;;VAR_5++) {

            VAR_2.index = VAR_5;

            VAR_6 = v4l2_ioctl(VAR_1->fd, VIDIOC_ENUMSTD, &VAR_2);

            if (VAR_6 < 0 || !av_strcasecmp(VAR_2.name, VAR_1->VAR_2))

                break;

        }

        if (VAR_6 < 0) {

            av_log(VAR_0, AV_LOG_ERROR, "Unknown VAR_2 '%VAR_1'\n", VAR_1->VAR_2);

            return VAR_6;

        }



        av_log(VAR_0, AV_LOG_DEBUG,

               "The V4L2 driver set VAR_2: %VAR_1, id: %"PRIu64"\n",

               VAR_1->VAR_2, (uint64_t)VAR_2.id);

        if (v4l2_ioctl(VAR_1->fd, VIDIOC_S_STD, &VAR_2.id) < 0) {

            av_log(VAR_0, AV_LOG_ERROR,

                   "The V4L2 driver ioctl set VAR_2(%VAR_1) failed\n",

                   VAR_1->VAR_2);

            return AVERROR(EIO);

        }

    }



    if (framerate_q.num && framerate_q.den) {

        av_log(VAR_0, AV_LOG_DEBUG, "Setting time per frame to %d/%d\n",

               framerate_q.den, framerate_q.num);

        VAR_4->numerator   = framerate_q.den;

        VAR_4->denominator = framerate_q.num;



        if (v4l2_ioctl(VAR_1->fd, VIDIOC_S_PARM, &VAR_3) != 0) {

            av_log(VAR_0, AV_LOG_ERROR,

                   "ioctl set time per frame(%d/%d) failed\n",

                   framerate_q.den, framerate_q.num);

            return AVERROR(EIO);

        }



        if (framerate_q.num != VAR_4->denominator ||

            framerate_q.den != VAR_4->numerator) {

            av_log(VAR_0, AV_LOG_INFO,

                   "The driver changed the time per frame from "

                   "%d/%d to %d/%d\n",

                   framerate_q.den, framerate_q.num,

                   VAR_4->numerator, VAR_4->denominator);

        }

    } else {

        if (v4l2_ioctl(VAR_1->fd, VIDIOC_G_PARM, &VAR_3) != 0) {

            av_log(VAR_0, AV_LOG_ERROR, "ioctl(VIDIOC_G_PARM): %VAR_1\n",

                   strerror(errno));

            return AVERROR(errno);

        }

    }

    VAR_0->streams[0]->avg_frame_rate.num = VAR_4->denominator;

    VAR_0->streams[0]->avg_frame_rate.den = VAR_4->numerator;



    return 0;

}

static int FUNC_0(AVFormatContext *VAR_0)
{ struct video_data *VAR_1 = VAR_0->priv_data; struct v4l2_standard VAR_2 = { 0 }; struct v4l2_streamparm VAR_3 = { 0 }; struct v4l2_fract *VAR_4 = &VAR_3.parm.capture.timeperframe; AVRational framerate_q = { 0 }; int VAR_5, VAR_6; VAR_3.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; if (VAR_1->framerate &&
(VAR_6 = av_parse_video_rate(&framerate_q, VAR_1->framerate)) < 0) { av_log(VAR_0, AV_LOG_ERROR, "Could not parse framerate '%VAR_1'.\n",
VAR_1->framerate); return VAR_6; } if (VAR_1->VAR_2) { av_log(VAR_0, AV_LOG_DEBUG, "The V4L2 driver set VAR_2: %VAR_1\n",
VAR_1->VAR_2); for(VAR_5=0;;VAR_5++) { VAR_2.index = VAR_5; VAR_6 = v4l2_ioctl(VAR_1->fd, VIDIOC_ENUMSTD, &VAR_2); if (VAR_6 < 0 || !av_strcasecmp(VAR_2.name, VAR_1->VAR_2))
break; } if (VAR_6 < 0) { av_log(VAR_0, AV_LOG_ERROR, "Unknown VAR_2 '%VAR_1'\n", VAR_1->VAR_2); return VAR_6; } av_log(VAR_0, AV_LOG_DEBUG,
"The V4L2 driver set VAR_2: %VAR_1, id: %"PRIu64"\n",
VAR_1->VAR_2, (uint64_t)VAR_2.id); if (v4l2_ioctl(VAR_1->fd, VIDIOC_S_STD, &VAR_2.id) < 0) { av_log(VAR_0, AV_LOG_ERROR,
"The V4L2 driver ioctl set VAR_2(%VAR_1) failed\n",
VAR_1->VAR_2); return AVERROR(EIO); } } if (framerate_q.num && framerate_q.den) { av_log(VAR_0, AV_LOG_DEBUG, "Setting time per frame to %d/%d\n",
framerate_q.den, framerate_q.num); VAR_4->numerator   = framerate_q.den; VAR_4->denominator = framerate_q.num; if (v4l2_ioctl(VAR_1->fd, VIDIOC_S_PARM, &VAR_3) != 0) { av_log(VAR_0, AV_LOG_ERROR,
"ioctl set time per frame(%d/%d) failed\n",
framerate_q.den, framerate_q.num); return AVERROR(EIO); } if (framerate_q.num != VAR_4->denominator ||
framerate_q.den != VAR_4->numerator) { av_log(VAR_0, AV_LOG_INFO,
"The driver changed the time per frame from "
"%d/%d to %d/%d\n",
framerate_q.den, framerate_q.num,
VAR_4->numerator, VAR_4->denominator); } } else { if (v4l2_ioctl(VAR_1->fd, VIDIOC_G_PARM, &VAR_3) != 0) { av_log(VAR_0, AV_LOG_ERROR, "ioctl(VIDIOC_G_PARM): %VAR_1\n",
strerror(errno)); return AVERROR(errno); } } VAR_0->streams[0]->avg_frame_rate.num = VAR_4->denominator; VAR_0->streams[0]->avg_frame_rate.den = VAR_4->numerator; return 0; }