+/** 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
+};
+
+/** 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 };
+