avfilter: Constify all AVFilters

[ffmpeg] / libavfilter / asrc_anullsrc.c

diff --git a/libavfilter/asrc_anullsrc.c b/libavfilter/asrc_anullsrc.c
index dabdb43f1844711b319588447840c6bd1551bfde..45d830e3a22c263ae2e39336e45fdc760a913791 100644 (file)
--- a/libavfilter/asrc_anullsrc.c
+++ b/libavfilter/asrc_anullsrc.c
@@ -115,19 +115,14 @@ static int activate(AVFilterContext *ctx)
 
     if (ff_outlink_frame_wanted(outlink)) {
         AVFrame *samplesref = ff_get_audio_buffer(outlink, null->duration >= 0 ? FFMIN(null->nb_samples, null->duration - null->pts) : null->nb_samples);
-        int ret;
 
         if (!samplesref)
             return AVERROR(ENOMEM);
 
         samplesref->pts = null->pts;
+        null->pts += samplesref->nb_samples;
 
-        ret = ff_filter_frame(outlink, samplesref);
-        if (ret < 0)
-            return ret;
-
-        null->pts += null->nb_samples;
-        return 0;
+        return ff_filter_frame(outlink, samplesref);
     }
 
     return FFERROR_NOT_READY;
@@ -142,7 +137,7 @@ static const AVFilterPad avfilter_asrc_anullsrc_outputs[] = {
     { NULL }
 };
 
-AVFilter ff_asrc_anullsrc = {
+const AVFilter ff_asrc_anullsrc = {
     .name          = "anullsrc",
     .description   = NULL_IF_CONFIG_SMALL("Null audio source, return empty audio frames."),
     .init          = init,