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Message-ID: <832026c0-e14b-e09d-02e2-d5cd2d24c560@gmail.com>
Date: Tue, 15 Feb 2022 09:27:37 -0300
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To: ffmpeg-devel@ffmpeg.org
References: <20220113015101.4-1-jamrial@gmail.com>
 <20220113020913.870-6-jamrial@gmail.com>
 <164492580482.19727.5709579514076305797@lain.red.khirnov.net>
From: James Almer <jamrial@gmail.com>
In-Reply-To: <164492580482.19727.5709579514076305797@lain.red.khirnov.net>
Subject: Re: [FFmpeg-devel] [PATCH 275/281] avfilter: convert to new channel
 layout API
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On 2/15/2022 8:50 AM, Anton Khirnov wrote:
> Quoting James Almer (2022-01-13 03:09:07)
>> @@ -212,31 +212,31 @@ static int config_input(AVFilterLink *inlink)
>>           return AVERROR(ENOMEM);
>>       for (ch = 0;  ch < s->nb_in_channels; ch++)
>>           s->input_levels[ch] = s->level_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_FRONT_CENTER);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_FRONT_CENTER);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->fc_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_FRONT_LEFT);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_FRONT_LEFT);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->fl_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_FRONT_RIGHT);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_FRONT_RIGHT);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->fr_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_SIDE_LEFT);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_SIDE_LEFT);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->sl_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_SIDE_RIGHT);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_SIDE_RIGHT);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->sr_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_BACK_LEFT);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_BACK_LEFT);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->bl_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_BACK_RIGHT);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_BACK_RIGHT);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->br_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_BACK_CENTER);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_BACK_CENTER);
>>       if (ch >= 0)
>>           s->input_levels[ch] *= s->bc_in;
>> -    ch = av_get_channel_layout_channel_index(inlink->channel_layout, AV_CH_LOW_FREQUENCY);
>> +    ch = av_channel_layout_index_from_channel(&inlink->ch_layout, AV_CHAN_LOW_FREQUENCY);
>>       if (ch >= 0)
> 
> Make all those compare to AV_CHAN_NONE

ch is an index, so either >= 0, or EINVAL.
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