1 files changed, 15 insertions, 0 deletions
diff --git a/libavformat/oma.c b/libavformat/oma.c
index aaaf0b29a0..27b598857c 100644
--- a/libavformat/oma.c
+++ b/libavformat/oma.c
@@ -21,6 +21,7 @@
 #include "internal.h"
 #include "oma.h"
 #include "libavcodec/avcodec.h"
+#include "libavutil/channel_layout.h"
 
 const uint16_t ff_oma_srate_tab[8] = { 320, 441, 480, 882, 960, 0 };
 
@@ -31,3 +32,17 @@ const AVCodecTag ff_oma_codec_tags[] = {
     { AV_CODEC_ID_PCM_S16BE,   OMA_CODECID_LPCM    },
     { 0 },
 };
+
+/** map ATRAC-X channel id to internal channel layout */
+const uint64_t ff_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
+};
+
+/** map ATRAC-X channel id to total number of channels */
+const int ff_oma_chid_to_num_channels[7] = {1, 2, 3, 4, 6, 7, 8};