vorbis: convert to new channel layout API

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

libavcodec/vorbisdec.c

@@ -1077,12 +1077,14 @@ static av_cold int vorbis_decode_init(AVCodecContext *avctx)
         return ret;
     }
 
-    if (vc->audio_channels > 8)
-        avctx->channel_layout = 0;
-    else
-        avctx->channel_layout = ff_vorbis_channel_layouts[vc->audio_channels - 1];
+    av_channel_layout_uninit(&avctx->ch_layout);
+    if (vc->audio_channels > 8) {
+        avctx->ch_layout.order       = AV_CHANNEL_ORDER_UNSPEC;
+        avctx->ch_layout.nb_channels = vc->audio_channels;
+    } else {
+        av_channel_layout_copy(&avctx->ch_layout, &ff_vorbis_ch_layouts[vc->audio_channels - 1]);
+    }
 
-    avctx->channels    = vc->audio_channels;
     avctx->sample_rate = vc->audio_samplerate;
 
     return 0;
@@ -1788,12 +1790,14 @@ static int vorbis_decode_frame(AVCodecContext *avctx, void *data,
             return ret;
         }
 
-        if (vc->audio_channels > 8)
-            avctx->channel_layout = 0;
-        else
-            avctx->channel_layout = ff_vorbis_channel_layouts[vc->audio_channels - 1];
+        av_channel_layout_uninit(&avctx->ch_layout);
+        if (vc->audio_channels > 8) {
+            avctx->ch_layout.order       = AV_CHANNEL_ORDER_UNSPEC;
+            avctx->ch_layout.nb_channels = vc->audio_channels;
+        } else {
+            av_channel_layout_copy(&avctx->ch_layout, &ff_vorbis_ch_layouts[vc->audio_channels - 1]);
+        }
 
-        avctx->channels    = vc->audio_channels;
         avctx->sample_rate = vc->audio_samplerate;
         return buf_size;
     }
@@ -1892,7 +1896,10 @@ const AVCodec ff_vorbis_decoder = {
     .flush           = vorbis_decode_flush,
     .capabilities    = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
     .caps_internal   = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
+#if FF_API_OLD_CHANNEL_LAYOUT
     .channel_layouts = ff_vorbis_channel_layouts,
+#endif
+    .ch_layouts      = ff_vorbis_ch_layouts,
     .sample_fmts     = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
                                                        AV_SAMPLE_FMT_NONE },
 };

libavcodec/vorbisenc.c

@@ -276,7 +276,7 @@ static int create_vorbis_context(vorbis_enc_context *venc,
     const uint8_t *clens, *quant;
     int i, book, ret;
 
-    venc->channels    = avctx->channels;
+    venc->channels    = avctx->ch_layout.nb_channels;
     venc->sample_rate = avctx->sample_rate;
     venc->log2_blocksize[0] = venc->log2_blocksize[1] = 11;
 
@@ -1038,7 +1038,8 @@ static AVFrame *spawn_empty_frame(AVCodecContext *avctx, int channels)
 
     f->format = avctx->sample_fmt;
     f->nb_samples = avctx->frame_size;
-    f->channel_layout = avctx->channel_layout;
+    f->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
+    f->ch_layout.nb_channels = channels;
 
     if (av_frame_get_buffer(f, 4)) {
         av_frame_free(&f);
@@ -1267,7 +1268,7 @@ static av_cold int vorbis_encode_init(AVCodecContext *avctx)
     vorbis_enc_context *venc = avctx->priv_data;
     int ret;
 
-    if (avctx->channels != 2) {
+    if (avctx->ch_layout.nb_channels != 2) {
         av_log(avctx, AV_LOG_ERROR, "Current FFmpeg Vorbis encoder only supports 2 channels.\n");
         return -1;
     }