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| author | Stefano Sabatini <stefasab@gmail.com> | 2013-12-23 18:24:57 +0100 |
|---|---|---|
| committer | Stefano Sabatini <stefasab@gmail.com> | 2013-12-25 18:25:53 +0100 |
| commit | 97aa554634044b84a498f41ac9bd88b688731c3b (patch) | |
| tree | 31ec381ccdd68888939b3e1655bb41fe167502b5 /libavfilter/af_volume.c | |
| parent | 7619a87cc8b9a1ac6ea6cf03b674f5a74b1ac90c (diff) | |
| download | ffmpeg-97aa554634044b84a498f41ac9bd88b688731c3b.tar.gz | |
lavfi/volume: implement process_command() callback, with the volume command
Address trac ticket #2868.
Diffstat (limited to 'libavfilter/af_volume.c')
| -rw-r--r-- | libavfilter/af_volume.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libavfilter/af_volume.c b/libavfilter/af_volume.c index b4ab6fee88..9dc868f91a 100644 --- a/libavfilter/af_volume.c +++ b/libavfilter/af_volume.c @@ -296,6 +296,22 @@ static int config_output(AVFilterLink *outlink) return set_volume(ctx); } +static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, + char *res, int res_len, int flags) +{ + VolumeContext *vol = ctx->priv; + int ret = AVERROR(ENOSYS); + + if (!strcmp(cmd, "volume")) { + if ((ret = set_expr(&vol->volume_pexpr, args, ctx)) < 0) + return ret; + if (vol->eval_mode == EVAL_MODE_ONCE) + set_volume(ctx); + } + + return ret; +} + #define D2TS(d) (isnan(d) ? AV_NOPTS_VALUE : (int64_t)(d)) #define TS2D(ts) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)) #define TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)*av_q2d(tb)) @@ -403,4 +419,5 @@ AVFilter ff_af_volume = { .inputs = avfilter_af_volume_inputs, .outputs = avfilter_af_volume_outputs, .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, + .process_command = process_command, }; |