add new channel mapping standard PA_CHANNEL_MAP_OSS

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@895 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/polyp/channelmap.c

@@ -273,6 +273,41 @@ pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels, p
                     return NULL;
             }
 
+        case PA_CHANNEL_MAP_OSS:
+
+            switch (channels) {
+                case 1:
+                    m->map[0] = PA_CHANNEL_POSITION_MONO;
+                    return m;
+                    
+                case 8:
+                    m->map[6] = PA_CHANNEL_POSITION_REAR_LEFT;
+                    m->map[7] = PA_CHANNEL_POSITION_REAR_RIGHT;
+                    /* Fall through */
+                    
+                case 6:
+                    m->map[4] = PA_CHANNEL_POSITION_SIDE_LEFT;
+                    m->map[5] = PA_CHANNEL_POSITION_SIDE_RIGHT;
+                    /* Fall through */
+
+                case 4:
+                    m->map[3] = PA_CHANNEL_POSITION_LFE;
+                    /* Fall through */
+                    
+                case 3:
+                    m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER;
+                    /* Fall through */
+                    
+                case 2:
+                    m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+                    m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+                    return m;
+                    
+                default:
+                    return NULL;
+            }
+            
+
         default:
             return NULL;
     }

src/polyp/channelmap.h

@@ -126,6 +126,7 @@ typedef enum pa_channel_map_def {
     PA_CHANNEL_MAP_ALSA,   /**< The default mapping used by ALSA */
     PA_CHANNEL_MAP_AUX,    /**< Only aux channels */
     PA_CHANNEL_MAP_WAVEEX, /**< Microsoft's WAVEFORMATEXTENSIBLE mapping */
+    PA_CHANNEL_MAP_OSS,    /**< The default channel mapping used by OSS as defined in the OSS 4.0 API specs */
     
     PA_CHANNEL_MAP_DEFAULT = PA_CHANNEL_MAP_AIFF /**< The default channel map */
 } pa_channel_map_def_t;