[FFmpeg-devel] [PATCH 08/25] lavfi/af_extrastereo: convert to query_func2()

[Anton Khirnov]

Also, drop a redundant call that also happens implicitly in generic code.
---
 libavfilter/af_extrastereo.c | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/libavfilter/af_extrastereo.c b/libavfilter/af_extrastereo.c
index 6563b39402..dc5cc76fa4 100644
--- a/libavfilter/af_extrastereo.c
+++ b/libavfilter/af_extrastereo.c
@@ -42,19 +42,30 @@ static const AVOption extrastereo_options[] = {
 
 AVFILTER_DEFINE_CLASS(extrastereo);
 
-static int query_formats(AVFilterContext *ctx)
+static int query_formats(const AVFilterContext *ctx,
+                         AVFilterFormatsConfig **cfg_in,
+                         AVFilterFormatsConfig **cfg_out)
 {
-    AVFilterFormats *formats = NULL;
-    AVFilterChannelLayouts *layout = NULL;
+    static const enum AVSampleFormat formats[] = {
+        AV_SAMPLE_FMT_FLT,
+        AV_SAMPLE_FMT_NONE,
+    };
+    static const AVChannelLayout layouts[] = {
+        (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO,
+        (AVChannelLayout){ .nb_channels = 0 },
+    };
+
     int ret;
 
-    if ((ret = ff_add_format                 (&formats, AV_SAMPLE_FMT_FLT  )) < 0 ||
-        (ret = ff_set_common_formats         (ctx     , formats            )) < 0 ||
-        (ret = ff_add_channel_layout         (&layout , &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO)) < 0 ||
-        (ret = ff_set_common_channel_layouts (ctx     , layout             )) < 0)
+    ret = ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, formats);
+    if (ret < 0)
         return ret;
 
-    return ff_set_common_all_samplerates(ctx);
+    ret = ff_set_common_channel_layouts_from_list2(ctx, cfg_in, cfg_out, layouts);
+    if (ret < 0)
+        return ret;
+
+    return 0;
 }
 
 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
@@ -118,7 +129,7 @@ const AVFilter ff_af_extrastereo = {
     .priv_class     = &extrastereo_class,
     FILTER_INPUTS(inputs),
     FILTER_OUTPUTS(ff_audio_default_filterpad),
-    FILTER_QUERY_FUNC(query_formats),
+    FILTER_QUERY_FUNC2(query_formats),
     .flags          = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
     .process_command = ff_filter_process_command,
 };
-- 
2.43.0