diff options
| author | Paul B Mahol <onemda@gmail.com> | 2020-03-13 17:19:33 +0100 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2020-03-13 17:19:33 +0100 |
| commit | 8f222573e9b1d98a38fcc5578676b109592ac982 (patch) | |
| tree | ba3b9828646d77ace1da1541a30261d00159fbc0 /libavfilter | |
| parent | 86e599d9f41b6e0a4cc5e8030215efb68be6f4b5 (diff) | |
avfilter/f_sendcmd: add more useful variables
Diffstat (limited to 'libavfilter')
| -rw-r--r-- | libavfilter/f_sendcmd.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/libavfilter/f_sendcmd.c b/libavfilter/f_sendcmd.c index 5a62a338ee..0ac87e07ef 100644 --- a/libavfilter/f_sendcmd.c +++ b/libavfilter/f_sendcmd.c @@ -43,6 +43,9 @@ static const char *const var_names[] = { "T", /* frame time in seconds */ "POS", /* original position in the file of the frame */ "PTS", /* frame pts */ + "TS", /* interval start time in seconds */ + "TE", /* interval end time in seconds */ + "TI", /* interval interpolated value: TI = (T - TS) / (TE - TS) */ NULL }; @@ -51,6 +54,9 @@ enum var_name { VAR_T, VAR_POS, VAR_PTS, + VAR_TS, + VAR_TE, + VAR_TI, VAR_VARS_NB }; @@ -517,11 +523,17 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *ref) if (cmd->flags & flags) { if (cmd->flags & COMMAND_FLAG_EXPR) { double var_values[VAR_VARS_NB], res; + double start = TS2T(interval->start_ts, AV_TIME_BASE_Q); + double end = TS2T(interval->end_ts, AV_TIME_BASE_Q); + double current = TS2T(ref->pts, inlink->time_base); var_values[VAR_N] = inlink->frame_count_in; var_values[VAR_POS] = ref->pkt_pos == -1 ? NAN : ref->pkt_pos; var_values[VAR_PTS] = TS2D(ref->pts); - var_values[VAR_T] = TS2T(ref->pts, inlink->time_base); + var_values[VAR_T] = current; + var_values[VAR_TS] = start; + var_values[VAR_TE] = end; + var_values[VAR_TI] = (current - start) / (end - start); if ((ret = av_expr_parse_and_eval(&res, cmd->arg, var_names, var_values, NULL, NULL, NULL, NULL, NULL, 0, NULL)) < 0) { |