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[FFmpeg-devel] avfilter/af_aderivative: add timeline support

Message ID 20220213194032.1562740-1-onemda@gmail.com
State Accepted
Commit 9e11a7e193255e40836ce7f74bfa6df9498c07bd
Headers show
Series [FFmpeg-devel] avfilter/af_aderivative: add timeline support | expand

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Commit Message

Paul B Mahol Feb. 13, 2022, 7:40 p.m. UTC 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
 libavfilter/af_aderivative.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/libavfilter/af_aderivative.c b/libavfilter/af_aderivative.c
index baa272d609..ca8af6cec8 100644
--- a/libavfilter/af_aderivative.c
+++ b/libavfilter/af_aderivative.c
@@ -16,6 +16,7 @@ 
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/opt.h"
 #include "audio.h"
 #include "avfilter.h"
 #include "internal.h"
@@ -103,8 +104,18 @@  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     AVFilterContext *ctx = inlink->dst;
     ADerivativeContext *s = ctx->priv;
     AVFilterLink *outlink = ctx->outputs[0];
-    AVFrame *out = ff_get_audio_buffer(outlink, in->nb_samples);
+    AVFrame *out;
 
+    if (ctx->is_disabled) {
+        if (s->prev)
+            av_samples_set_silence(s->prev->extended_data, 0, 1,
+                                   s->prev->channels,
+                                   s->prev->format);
+
+        return ff_filter_frame(outlink, in);
+    }
+
+    out = ff_get_audio_buffer(outlink, in->nb_samples);
     if (!out) {
         av_frame_free(&in);
         return AVERROR(ENOMEM);
@@ -149,23 +160,33 @@  static const AVFilterPad aderivative_outputs[] = {
     },
 };
 
+static const AVOption aderivative_options[] = {
+    { NULL }
+};
+
+AVFILTER_DEFINE_CLASS_EXT(aderivative, "aderivative/aintegral", aderivative_options);
+
 const AVFilter ff_af_aderivative = {
     .name          = "aderivative",
     .description   = NULL_IF_CONFIG_SMALL("Compute derivative of input audio."),
     .priv_size     = sizeof(ADerivativeContext),
+    .priv_class    = &aderivative_class,
     .uninit        = uninit,
     FILTER_INPUTS(aderivative_inputs),
     FILTER_OUTPUTS(aderivative_outputs),
     FILTER_SAMPLEFMTS(AV_SAMPLE_FMT_S16P, AV_SAMPLE_FMT_FLTP,
                       AV_SAMPLE_FMT_S32P, AV_SAMPLE_FMT_DBLP),
+    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
 };
 
 const AVFilter ff_af_aintegral = {
     .name          = "aintegral",
     .description   = NULL_IF_CONFIG_SMALL("Compute integral of input audio."),
     .priv_size     = sizeof(ADerivativeContext),
+    .priv_class    = &aderivative_class,
     .uninit        = uninit,
     FILTER_INPUTS(aderivative_inputs),
     FILTER_OUTPUTS(aderivative_outputs),
     FILTER_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_DBLP),
+    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
 };