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avcodec/setts_bsf: add sample rate for expressions

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This commit is contained in:
Paul B Mahol 2021-02-15 20:51:21 +01:00
parent 5f0e3b549a
commit 6941d93faa
2 changed files with 6 additions and 0 deletions
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3
doc/bitstream_filters.texi
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@ -727,6 +727,9 @@ The previous output PTS.
@item TB
The timebase of stream packet belongs.
@item SR
The sample rate of stream packet belongs.
@end table
@anchor{text2movsub}

3
libavcodec/setts_bsf.c
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@ -43,6 +43,7 @@ static const char *const var_names[] = {
"STARTPTS", ///< PTS at start of movie
"STARTDTS", ///< DTS at start of movie
"TB", ///< timebase of the stream
"SR", ///< sample rate of the stream
NULL
};
@ -59,6 +60,7 @@ enum var_name {
VAR_STARTPTS,
VAR_STARTDTS,
VAR_TB,
VAR_SR,
VAR_VARS_NB
};
@ -151,6 +153,7 @@ static int setts_filter(AVBSFContext *ctx, AVPacket *pkt)
s->var_values[VAR_STARTPTS] = s->start_pts;
s->var_values[VAR_STARTDTS] = s->start_dts;
s->var_values[VAR_TB] = av_q2d(ctx->time_base_out);
s->var_values[VAR_SR] = ctx->par_in->sample_rate;
new_ts = llrint(av_expr_eval(s->ts_expr, s->var_values, NULL));