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avfilter/vf_thumbnail: allow to change stats log level

This commit is contained in:
Paul B Mahol 2022-12-05 15:46:29 +01:00
parent 46642ceeaf
commit 520111c610
2 changed files with 13 additions and 3 deletions
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4
doc/filters.texi
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@ -22193,6 +22193,10 @@ The filter accepts the following options:
Set the frames batch size to analyze; in a set of @var{n} frames, the filter
will pick one of them, and then handle the next batch of @var{n} frames until
the end. Default is @code{100}.
@item log
Set the log level to display picked frame stats.
Default is @code{info}.
@end table
Since the filter keeps track of the whole frames sequence, a bigger @var{n}

12
libavfilter/vf_thumbnail.c
View File

@ -42,6 +42,7 @@ struct thumb_frame {
typedef struct ThumbContext {
const AVClass *class;
int n; ///< current frame
int loglevel;
int n_frames; ///< number of frames for analysis
struct thumb_frame *frames; ///< the n_frames frames
AVRational tb; ///< copy of the input timebase to ease access
@ -58,6 +59,10 @@ typedef struct ThumbContext {
static const AVOption thumbnail_options[] = {
{ "n", "set the frames batch size", OFFSET(n_frames), AV_OPT_TYPE_INT, {.i64=100}, 2, INT_MAX, FLAGS },
{ "log", "force stats logging level", OFFSET(loglevel), AV_OPT_TYPE_INT, {.i64 = AV_LOG_INFO}, INT_MIN, INT_MAX, FLAGS, "level" },
{ "quiet", "logging disabled", 0, AV_OPT_TYPE_CONST, {.i64 = AV_LOG_QUIET}, 0, 0, FLAGS, "level" },
{ "info", "information logging level", 0, AV_OPT_TYPE_CONST, {.i64 = AV_LOG_INFO}, 0, 0, FLAGS, "level" },
{ "verbose", "verbose logging level", 0, AV_OPT_TYPE_CONST, {.i64 = AV_LOG_VERBOSE}, 0, 0, FLAGS, "level" },
{ NULL }
};
@ -127,9 +132,10 @@ static AVFrame *get_best_frame(AVFilterContext *ctx)
// raise the chosen one
picref = s->frames[best_frame_idx].buf;
av_log(ctx, AV_LOG_INFO, "frame id #%d (pts_time=%f) selected "
"from a set of %d images\n", best_frame_idx,
picref->pts * av_q2d(s->tb), nb_frames);
if (s->loglevel != AV_LOG_QUIET)
av_log(ctx, s->loglevel, "frame id #%d (pts_time=%f) selected "
"from a set of %d images\n", best_frame_idx,
picref->pts * av_q2d(s->tb), nb_frames);
s->frames[best_frame_idx].buf = NULL;
return picref;