[FFmpeg-devel] [PATCH] swresample: try to fix regression

[Paul B Mahol <onemda@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 27 bytes --]

This one should pass FATE.

[-- Attachment #2: 0001-swresample-do-not-attempt-to-rematrix-if-channel-map.patch --]
[-- Type: text/x-patch, Size: 2283 bytes --]

From ca54f241756e764f70c919acd0c99c811762dcb1 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Wed, 8 Feb 2023 18:35:38 +0100
Subject: [PATCH] swresample: do not attempt to rematrix if channel map is
 provided

Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
 libavfilter/af_pan.c       | 6 +-----
 libswresample/swresample.c | 4 ++--
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/libavfilter/af_pan.c b/libavfilter/af_pan.c
index 80c194b066..067f646805 100644
--- a/libavfilter/af_pan.c
+++ b/libavfilter/af_pan.c
@@ -313,9 +313,7 @@ static int config_props(AVFilterLink *link)
             pan->channel_map[i] = ch_id;
         }
 
-        av_opt_set_chlayout(pan->swr, "ichl", &link->ch_layout, 0);
-        av_opt_set_chlayout(pan->swr, "ochl", &pan->out_channel_layout, 0);
-        av_opt_set_int(pan->swr, "uch", link->ch_layout.nb_channels, 0);
+        av_opt_set_int(pan->swr, "uch", pan->nb_output_channels, 0);
         swr_set_channel_mapping(pan->swr, pan->channel_map);
     } else {
         // renormalize
@@ -335,8 +333,6 @@ static int config_props(AVFilterLink *link)
             for (j = 0; j < link->ch_layout.nb_channels; j++)
                 pan->gain[i][j] /= t;
         }
-        av_opt_set_chlayout(pan->swr, "ichl", &link->ch_layout, 0);
-        av_opt_set_chlayout(pan->swr, "ochl", &pan->out_channel_layout, 0);
         swr_set_matrix(pan->swr, pan->gain[0], pan->gain[1] - pan->gain[0]);
     }
 
diff --git a/libswresample/swresample.c b/libswresample/swresample.c
index 5884f8d533..7c8d9bfc97 100644
--- a/libswresample/swresample.c
+++ b/libswresample/swresample.c
@@ -312,9 +312,9 @@ av_cold int swr_init(struct SwrContext *s){
     if (s->out_ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
         av_channel_layout_default(&s->out_ch_layout, s->out.ch_count);
 
-    s->rematrix = av_channel_layout_compare(&s->out_ch_layout, &s->in_ch_layout) ||
+    s->rematrix = !s->channel_map && (av_channel_layout_compare(&s->out_ch_layout, &s->in_ch_layout) ||
                  s->rematrix_volume!=1.0 ||
-                 s->rematrix_custom;
+                 s->rematrix_custom);
 
     if(s->int_sample_fmt == AV_SAMPLE_FMT_NONE){
         if(   av_get_bytes_per_sample(s-> in_sample_fmt) <= 2
-- 
2.39.1


[-- Attachment #3: Type: text/plain, Size: 251 bytes --]

_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel

To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".