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avfilter/af_channelmap: fix error message if FL source channel was missing 

FL channel ID is 0, so for an unset value we must check for ID < 0.

Regression since 1f96db959c.

Signed-off-by: Marton Balint <cus@passwd.hu>
(cherry picked from commit 9a5627ea9a)
This commit is contained in:
Marton Balint 2024-03-18 21:56:58 +01:00
parent f4a6db1222
commit 88127b743f
1 changed files with 2 additions and 2 deletions
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4
libavfilter/af_channelmap.c
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@ -167,7 +167,7 @@ static av_cold int channelmap_init(AVFilterContext *ctx)
for (i = 0; i < map_entries; i++) {
int in_ch_idx = -1, out_ch_idx = -1;
int in_ch = 0, out_ch = 0;
int in_ch = -1, out_ch = -1;
static const char err[] = "Failed to parse channel map\n";
switch (mode) {
case MAP_ONE_INT:
@ -382,7 +382,7 @@ static int channelmap_config_input(AVFilterLink *inlink)
if (m->in_channel_idx < 0 || m->in_channel_idx >= nb_channels) {
av_channel_layout_describe(&inlink->ch_layout, layout_name, sizeof(layout_name));
if (m->in_channel) {
if (m->in_channel >= 0) {
av_channel_name(channel_name, sizeof(channel_name), m->in_channel);
av_log(ctx, AV_LOG_ERROR,
"input channel '%s' not available from input layout '%s'\n",