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avdevice/v4l2: add option to ignore input error (-ignore_input_error).

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Some device returns error with VIDIOC_S_INPUT, VIDIOC_G_INPUT.
This commit is contained in:
rigaya
2023-04-08 09:48:45 +09:00
committed by nyanmisaka
parent 9ba8e4821a
commit d55d23bfaa
1 changed files with 6 additions and 2 deletions
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8
libavdevice/v4l2.c
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@@ -89,6 +89,7 @@ struct video_data {
int top_field_first;
int multi_planer;
int ts_mode;
int ignore_input_error;
TimeFilter *timefilter;
int64_t last_time_m;
@@ -940,8 +941,10 @@ static int v4l2_read_header(AVFormatContext *ctx)
av_log(ctx, AV_LOG_DEBUG, "Selecting input_channel: %d\n", s->channel);
if (v4l2_ioctl(s->fd, VIDIOC_S_INPUT, &s->channel) < 0) {
res = AVERROR(errno);
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_S_INPUT): %s\n", av_err2str(res));
goto fail;
av_log(ctx, (s->ignore_input_error) ? AV_LOG_WARNING : AV_LOG_ERROR, "ioctl(VIDIOC_S_INPUT): %s\n", av_err2str(res));
if (!s->ignore_input_error) {
goto fail;
}
}
} else {
/* get current video input */
@@ -1183,6 +1186,7 @@ static const AVOption options[] = {
{ "pixel_format", "set preferred pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "input_format", "set preferred pixel format (for raw video) or codec name", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "framerate", "set frame rate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "ignore_input_error", "ignore input error", OFFSET(ignore_input_error), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC },
{ "list_formats", "list available formats and exit", OFFSET(list_format), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC, .unit = "list_formats" },
{ "all", "show all available formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.i64 = V4L_ALLFORMATS }, 0, INT_MAX, DEC, .unit = "list_formats" },