scd: convert to new channel layout API

Signed-off-by: James Almer <jamrial@gmail.com>

libavformat/scd.c

@@ -194,7 +194,7 @@ static int scd_read_track(AVFormatContext *s, SCDTrackHeader *track, int index)
 
     par               = st->codecpar;
     par->codec_type   = AVMEDIA_TYPE_AUDIO;
-    par->channels     = (int)track->num_channels;
+    par->ch_layout.nb_channels = (int)track->num_channels;
     par->sample_rate  = (int)track->sample_rate;
     st->index         = index;
     st->start_time    = 0;
@@ -218,7 +218,7 @@ static int scd_read_track(AVFormatContext *s, SCDTrackHeader *track, int index)
         case SCD_TRACK_ID_PCM:
             par->codec_id              = AV_CODEC_ID_PCM_S16BE;
             par->bits_per_coded_sample = 16;
-            par->block_align           = par->bits_per_coded_sample * par->channels / 8;
+            par->block_align           = par->bits_per_coded_sample * par->ch_layout.nb_channels / 8;
             break;
         case SCD_TRACK_ID_MP3:
             par->codec_id              = AV_CODEC_ID_MP3;
@@ -325,8 +325,8 @@ static int scd_read_packet(AVFormatContext *s, AVPacket *pkt)
         }
 
         if (trk->data_type == SCD_TRACK_ID_PCM) {
-            pkt->pts      = trk->bytes_read / (par->channels * sizeof(uint16_t));
-            pkt->duration = size / (par->channels * sizeof(int16_t));
+            pkt->pts      = trk->bytes_read / (par->ch_layout.nb_channels * sizeof(uint16_t));
+            pkt->duration = size / (par->ch_layout.nb_channels * sizeof(int16_t));
         }
 
         trk->bytes_read   += ret;