Add names for more channel layouts to the channel layout map.

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

libavutil/audioconvert.c

@@ -64,16 +64,34 @@ static const struct {
 } channel_layout_map[] = {
     { "mono",        1,  AV_CH_LAYOUT_MONO },
     { "stereo",      2,  AV_CH_LAYOUT_STEREO },
+    { "stereo",      2,  AV_CH_LAYOUT_STEREO_DOWNMIX },
+    { "2.1",         3,  AV_CH_LAYOUT_2POINT1 },
+    { "3.0",         3,  AV_CH_LAYOUT_SURROUND },
+    { "3.0(back)",   3,  AV_CH_LAYOUT_2_1 },
+    { "3.1",         4,  AV_CH_LAYOUT_3POINT1 },
     { "4.0",         4,  AV_CH_LAYOUT_4POINT0 },
     { "quad",        4,  AV_CH_LAYOUT_QUAD },
+    { "quad(side)",  4,  AV_CH_LAYOUT_2_2 },
+    { "4.1",         5,  AV_CH_LAYOUT_4POINT1 },
     { "5.0",         5,  AV_CH_LAYOUT_5POINT0 },
     { "5.0",         5,  AV_CH_LAYOUT_5POINT0_BACK },
     { "5.1",         6,  AV_CH_LAYOUT_5POINT1 },
     { "5.1",         6,  AV_CH_LAYOUT_5POINT1_BACK },
     { "5.1+downmix", 8,  AV_CH_LAYOUT_5POINT1|AV_CH_LAYOUT_STEREO_DOWNMIX, },
+    { "6.0",         6,  AV_CH_LAYOUT_6POINT0 },
+    { "6.0(front)",  6,  AV_CH_LAYOUT_6POINT0_FRONT },
+    { "hexagonal",   6,  AV_CH_LAYOUT_HEXAGONAL },
+    { "6.1",         7,  AV_CH_LAYOUT_6POINT1 },
+    { "6.1",         7,  AV_CH_LAYOUT_6POINT1_BACK },
+    { "6.1(front)",  7,  AV_CH_LAYOUT_6POINT1_FRONT },
+    { "6.1+downmix", 9,  AV_CH_LAYOUT_6POINT1|AV_CH_LAYOUT_STEREO_DOWNMIX, },
+    { "7.0",         7,  AV_CH_LAYOUT_7POINT0 },
+    { "7.0(front)",  7,  AV_CH_LAYOUT_7POINT0_FRONT },
     { "7.1",         8,  AV_CH_LAYOUT_7POINT1 },
     { "7.1(wide)",   8,  AV_CH_LAYOUT_7POINT1_WIDE },
+    { "7.1(wide)",   8,  AV_CH_LAYOUT_7POINT1_WIDE_BACK },
     { "7.1+downmix", 10, AV_CH_LAYOUT_7POINT1|AV_CH_LAYOUT_STEREO_DOWNMIX, },
+    { "octagonal",   8,  AV_CH_LAYOUT_OCTAGONAL },
     { 0 }
 };