player: Adapt to new ffmpeg channel layout API.

Bumps required ffmpeg version to at least 5.1.

2 files changed, 8 insertions, 7 deletions

diff --git a/INSTALL b/INSTALL
index e170823..fa18296 100644
--- a/INSTALL
+++ b/INSTALL
@@ -10,7 +10,7 @@ Dependencies
 - libcurl>=7.32.0
 - gcrypt[1]
 - json-c
-- ffmpeg>=3.3 [2]
+- ffmpeg>=5.1 [2]
 - UTF-8 console/locale
 
 [1] with blowfish cipher enabled
diff --git a/src/player.c b/src/player.c
index 94d3cee..3a9cefe 100644
--- a/src/player.c
+++ b/src/player.c
@@ -235,7 +235,7 @@ static bool openStream (player_t * const player) {
 		softfail ("avcodec_parameters_to_context");
 	}
 
-	AVCodec * const decoder = avcodec_find_decoder (cp->codec_id);
+	const AVCodec * const decoder = avcodec_find_decoder (cp->codec_id);
 	if (decoder == NULL) {
 		softfail ("find_decoder");
 	}
@@ -282,11 +282,13 @@ static bool openFilter (player_t * const player) {
 	/* abuffer */
 	AVRational time_base = player->st->time_base;
 
+	char channelLayout[128];
+	av_channel_layout_describe(&player->cctx->ch_layout, channelLayout, sizeof(channelLayout));
 	snprintf (strbuf, sizeof (strbuf),
-			"time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%"PRIx64, 
+			"time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=%s",
 			time_base.num, time_base.den, cp->sample_rate,
 			av_get_sample_fmt_name (player->cctx->sample_fmt),
-			cp->channel_layout);
+			channelLayout);
 	if ((ret = avfilter_graph_create_filter (&player->fabuf,
 			avfilter_get_by_name ("abuffer"), "source", strbuf, NULL,
 			player->fgraph)) < 0) {
@@ -340,7 +342,7 @@ static bool openDevice (player_t * const player) {
 	memset (&aoFmt, 0, sizeof (aoFmt));
 	aoFmt.bits = av_get_bytes_per_sample (avformat) * 8;
 	assert (aoFmt.bits > 0);
-	aoFmt.channels = cp->channels;
+	aoFmt.channels = cp->ch_layout.nb_channels;
 	aoFmt.rate = getSampleRate (player);
 	aoFmt.byte_format = AO_FMT_NATIVE;
 
@@ -585,8 +587,7 @@ void *BarAoPlayThread (void *data) {
 		}
 		pthread_mutex_unlock (&player->aoplayLock);
 
-		const int numChannels = av_get_channel_layout_nb_channels (
-				filteredFrame->channel_layout);
+		const int numChannels = filteredFrame->ch_layout.nb_channels;
 		const int bps = av_get_bytes_per_sample (filteredFrame->format);
 		ao_play (player->aoDev, (char *) filteredFrame->data[0],
 				filteredFrame->nb_samples * numChannels * bps);