+int hb_ff_layout_xlat(int64_t ff_channel_layout, int channels)
+{
+ int hb_layout;
+
+ switch (ff_channel_layout)
+ {
+ case CH_LAYOUT_MONO:
+ hb_layout = HB_INPUT_CH_LAYOUT_MONO;
+ break;
+ case CH_LAYOUT_STEREO:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ case CH_LAYOUT_SURROUND:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F;
+ break;
+ case CH_LAYOUT_4POINT0:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F1R;
+ break;
+ case CH_LAYOUT_2_2:
+ hb_layout = HB_INPUT_CH_LAYOUT_2F2R;
+ break;
+ case CH_LAYOUT_QUAD:
+ hb_layout = HB_INPUT_CH_LAYOUT_2F2R;
+ break;
+ case CH_LAYOUT_5POINT0:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R;
+ break;
+ case CH_LAYOUT_5POINT1:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case CH_LAYOUT_5POINT0_BACK:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R;
+ break;
+ case CH_LAYOUT_5POINT1_BACK:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case CH_LAYOUT_7POINT0:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R;
+ break;
+ case CH_LAYOUT_7POINT1:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case CH_LAYOUT_STEREO_DOWNMIX:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ default:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ }
+ // Now make sure the chosen layout agrees with the number of channels
+ // ffmpeg tells us there are. It seems ffmpeg is sometimes confused
+ // about this. So we will make a best guess based on the number
+ // of channels.
+ int chans = HB_INPUT_CH_LAYOUT_GET_DISCRETE_COUNT( hb_layout );
+ if ( chans == channels )
+ {
+ return hb_layout;
+ }
+ hb_log( "Channels reported by ffmpeg (%d) != computed layout channels (%d).", channels, chans );
+ switch (channels)
+ {
+ case 1:
+ hb_layout = HB_INPUT_CH_LAYOUT_MONO;
+ break;
+ case 2:
+ hb_layout = HB_INPUT_CH_LAYOUT_STEREO;
+ break;
+ case 3:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F;
+ break;
+ case 4:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F1R;
+ break;
+ case 5:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R;
+ break;
+ case 6:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F2R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ case 7:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R;
+ break;
+ case 8:
+ hb_layout = HB_INPUT_CH_LAYOUT_3F4R|HB_INPUT_CH_LAYOUT_HAS_LFE;
+ break;
+ default:
+ hb_log("Unsupported number of audio channels (%d).\n", channels);
+ hb_layout = 0;
+ break;
+ }
+ return hb_layout;
+}
+