diff --git a/libavformat/oma.h b/libavformat/oma.h
index 85d5932f1d..1a8e16f6d6 100644
--- a/libavformat/oma.h
+++ b/libavformat/oma.h
@@ -23,6 +23,8 @@
 
 #include <stdint.h>
 
+#include "libavutil/channel_layout.h"
+
 #include "internal.h"
 
 #define EA3_HEADER_SIZE 96
diff --git a/libavformat/omadec.c b/libavformat/omadec.c
index 4c418a5ff2..066b2d85bd 100644
--- a/libavformat/omadec.c
+++ b/libavformat/omadec.c
@@ -60,19 +60,16 @@ static const uint64_t leaf_table[] = {
 };
 
 /** map ATRAC-X channel id to internal channel layout */
-static const uint64_t oma_chid_to_native_layout[7] = {
-    AV_CH_LAYOUT_MONO,
-    AV_CH_LAYOUT_STEREO,
-    AV_CH_LAYOUT_SURROUND,
-    AV_CH_LAYOUT_4POINT0,
-    AV_CH_LAYOUT_5POINT1_BACK,
-    AV_CH_LAYOUT_6POINT1_BACK,
-    AV_CH_LAYOUT_7POINT1
+static const AVChannelLayout  oma_chid_to_native_layout[7] = {
+    AV_CHANNEL_LAYOUT_MONO,
+    AV_CHANNEL_LAYOUT_STEREO,
+    AV_CHANNEL_LAYOUT_SURROUND,
+    AV_CHANNEL_LAYOUT_4POINT0,
+    AV_CHANNEL_LAYOUT_5POINT1_BACK,
+    AV_CHANNEL_LAYOUT_6POINT1_BACK,
+    AV_CHANNEL_LAYOUT_7POINT1
 };
 
-/** map ATRAC-X channel id to total number of channels */
-static const int oma_chid_to_num_channels[7] = { 1, 2, 3, 4, 6, 7, 8 };
-
 typedef struct OMAContext {
     uint64_t content_start;
     int encrypted;
@@ -474,8 +471,7 @@ static int oma_read_header(AVFormatContext *s)
         /* get stereo coding mode, 1 for joint-stereo */
         jsflag = (codec_params >> 17) & 1;
 
-        st->codecpar->channels    = 2;
-        st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
+        st->codecpar->ch_layout   = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
         st->codecpar->sample_rate = samplerate;
         st->codecpar->bit_rate    = st->codecpar->sample_rate * framesize / (1024 / 8);
 
@@ -501,8 +497,8 @@ static int oma_read_header(AVFormatContext *s)
                    "Invalid ATRAC-X channel id: %"PRIu32"\n", channel_id);
             return AVERROR_INVALIDDATA;
         }
-        st->codecpar->channel_layout = oma_chid_to_native_layout[channel_id - 1];
-        st->codecpar->channels       = oma_chid_to_num_channels[channel_id - 1];
+        av_channel_layout_copy(&st->codecpar->ch_layout,
+                               &oma_chid_to_native_layout[channel_id - 1]);
         framesize = ((codec_params & 0x3FF) * 8) + 8;
         samplerate = ff_oma_srate_tab[(codec_params >> 13) & 7] * 100;
         if (!samplerate) {
@@ -519,8 +515,7 @@ static int oma_read_header(AVFormatContext *s)
         break;
     case OMA_CODECID_LPCM:
         /* PCM 44.1 kHz 16 bit stereo big-endian */
-        st->codecpar->channels = 2;
-        st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
+        st->codecpar->ch_layout   = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
         st->codecpar->sample_rate = 44100;
         framesize = 1024;
         /* bit rate = sample rate x PCM block align (= 4) x 8 */
@@ -530,16 +525,14 @@ static int oma_read_header(AVFormatContext *s)
         avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
         break;
     case OMA_CODECID_ATRAC3AL:
-        st->codecpar->channels    = 2;
-        st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
+        st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
         st->codecpar->sample_rate = 44100;
         avpriv_set_pts_info(st, 64, 1, 44100);
         oc->read_packet = aal_read_packet;
         framesize = 4096;
         break;
     case OMA_CODECID_ATRAC3PAL:
-        st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
-        st->codecpar->channels       = 2;
+        st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
         st->codecpar->sample_rate = 44100;
         avpriv_set_pts_info(st, 64, 1, 44100);
         oc->read_packet = aal_read_packet;
diff --git a/libavformat/omaenc.c b/libavformat/omaenc.c
index 1c4edcac5c..246f5195fb 100644
--- a/libavformat/omaenc.c
+++ b/libavformat/omaenc.c
@@ -58,7 +58,7 @@ static av_cold int oma_write_header(AVFormatContext *s)
 
     switch (par->codec_tag) {
     case OMA_CODECID_ATRAC3:
-        if (par->channels != 2) {
+        if (par->ch_layout.nb_channels != 2) {
             av_log(s, AV_LOG_ERROR, "ATRAC3 in OMA is only supported with 2 channels\n");
             return AVERROR(EINVAL);
         }
@@ -78,7 +78,7 @@ static av_cold int oma_write_header(AVFormatContext *s)
     case OMA_CODECID_ATRAC3P:
         avio_wb32(s->pb, (OMA_CODECID_ATRAC3P << 24) |
                          (srate_index << 13) |
-                         (par->channels << 10) |
+                         (par->ch_layout.nb_channels << 10) |
                          (par->block_align/8 - 1));
         break;
     default: