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avfilter/vf_ssim: Add support for writing stats to stdout

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Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Tobias Rapp 2015-10-20 15:34:36 +02:00 committed by Michael Niedermayer
parent 98da061461
commit 18e8fac531
2 changed files with 6 additions and 3 deletions
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3
doc/filters.texi
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@ -10226,7 +10226,8 @@ The description of the accepted parameters follows.
@table @option @table @option
@item stats_file, f @item stats_file, f
If specified the filter will use the named file to save the SSIM of If specified the filter will use the named file to save the SSIM of
each individual frame. each individual frame. When filename equals "-" the data is sent to
standard output.
@end table @end table
The file printed if @var{stats_file} is selected, contains a sequence of The file printed if @var{stats_file} is selected, contains a sequence of

6
libavfilter/vf_ssim.c
View File

@ -223,7 +223,9 @@ static av_cold int init(AVFilterContext *ctx)
{ {
SSIMContext *s = ctx->priv; SSIMContext *s = ctx->priv;
if (s->stats_file_str) { if (!strcmp(s->stats_file_str, "-")) {
s->stats_file = stdout;
} else if (s->stats_file_str) {
s->stats_file = fopen(s->stats_file_str, "w"); s->stats_file = fopen(s->stats_file_str, "w");
if (!s->stats_file) { if (!s->stats_file) {
int err = AVERROR(errno); int err = AVERROR(errno);
@ -354,7 +356,7 @@ static av_cold void uninit(AVFilterContext *ctx)
ff_dualinput_uninit(&s->dinput); ff_dualinput_uninit(&s->dinput);
if (s->stats_file) if (s->stats_file && s->stats_file != stdout)
fclose(s->stats_file); fclose(s->stats_file);
av_freep(&s->temp); av_freep(&s->temp);