| 
									 
								 | Member name | Value | Description | 
|---|
 | LayoutNone | 0 | 
            None
             | 
 | LayoutUnsupported | 1 | 
            Unsupported
             | 
 | LayoutMono | 2 | 
            Front C
             | 
 | LayoutStereo | 3 | 
            Front L, Front R
             | 
 | Layout2_1 | 4 | 
            Front L, Front R, Back C
             | 
 | LayoutSurround | 5 | 
            Front L, Front R, Front C
             | 
 | Layout4_0 | 6 | 
            Front L, Front R, Front C, Back C
             | 
 | Layout2_2 | 7 | 
            Front L, Front R, Side L, Side R
             | 
 | LayoutQuad | 8 | 
            Front L, Front R, Back L, Back R
             | 
 | Layout5_0 | 9 | 
            Front L, Front R, Front C, Side L, Side R
             | 
 | Layout5_1 | 10 | 
            Front L, Front R, Front C, LFE, Side L, Side R
             | 
 | Layout5_0Back | 11 | 
            Front L, Front R, Front C, Back L, Back R
             | 
 | Layout5_1Back | 12 | 
            Front L, Front R, Front C, LFE, Back L, Back R
             | 
 | Layout7_0 | 13 | 
            Front L, Front R, Front C, Side L, Side R, Back L, Back R
             | 
 | Layout7_1 | 14 | 
            Front L, Front R, Front C, LFE, Side L, Side R, Back L, Back R
             | 
 | Layout7_1Wide | 15 | 
            Front L, Front R, Front C, LFE, Side L, Side R, Front LofC, Front RofC
             | 
 | LayoutStereoDownMix | 16 | 
            Stereo L, Stereo R
             | 
 | Layout2Point1 | 17 | 
            Stereo L, Stereo R, LFE
             | 
 | Layout3_1 | 18 | 
            Stereo L, Stereo R, Front C, LFE
             | 
 | Layout4_1 | 19 | 
            Stereo L, Stereo R, Front C, Rear C, LFE
             | 
 | Layout6_0 | 20 | 
            Stereo L, Stereo R, Front C, Side L, Side R, Back C
             | 
 | Layout6_0Front | 21 | 
            Stereo L, Stereo R, Side L, Side R, Front LofC, Front RofC
             | 
 | LayoutHexagonal | 22 | 
            Stereo L, Stereo R, Front C, Rear L, Rear R, Rear C
             | 
 | Layout6_1 | 23 | 
            Stereo L, Stereo R, Front C, LFE, Side L, Side R, Rear Center
             | 
 | Layout6_1Back | 24 | 
            Stereo L, Stereo R, Front C, LFE, Back L, Back R, Rear Center
             | 
 | Layout6_1Front | 25 | 
            Stereo L, Stereo R, Side L, Side R, Front LofC, Front RofC, LFE
             | 
 | Layout7_0Front | 26 | 
            Front L, Front R, Front C, Side L, Side R, Front LofC, Front RofC
             | 
 | Layout7_1WideBack | 27 | 
            Front L, Front R, Front C, LFE, Back L, Back R, Front LofC, Front RofC
             | 
 | LayoutOctagonal | 28 | 
            Front L, Front R, Front C, Side L, Side R, Rear L, Back R, Back C.
             | 
 | LayoutDiscrete | 29 | 
            Channels are not explicitly mapped to speakers.
             | 
 | LayoutStereoKeyboardAndMic | 30 | 
            Front L, Front R, Front C. Front C contains the keyboard mic audio. This
            layout is only intended for input for WebRTC. The Front C channel
            is stripped away in the WebRTC audio input pipeline and never seen outside
            of that.
             | 
 | Layout4_1QuadSize | 31 | 
            Front L, Front R, Side L, Side R, LFE
             | 
 | LayoutBitstream | 32 | 
            Actual channel layout is specified in the bitstream and the actual channel
            count is unknown at Chromium media pipeline level (useful for audio
            pass-through mode).
             | 
 | Layout5_1_4DownMix | 33 | 
            Front L, Front R, Front C, LFE, Side L, Side R,
            Front Height L, Front Height R, Rear Height L, Rear Height R
            Will be represented as six channels (5.1) due to eight channel limit
            kMaxConcurrentChannels
             | 
 | LayoutMax | 33 |  |