channelmap: Add 2.1 surround

[pulseaudio] / src / pulse / channelmap.c

diff --git a/src/pulse/channelmap.c b/src/pulse/channelmap.c
index fec062385f4a9f111e86693b82ffc8c4c9ffdda3..e1b173a187f67b54386d930dac5a6a2e23eacaed 100644 (file)
--- a/src/pulse/channelmap.c
+++ b/src/pulse/channelmap.c
@@ -199,8 +199,7 @@ pa_channel_map* pa_channel_map_init_stereo(pa_channel_map *m) {
 
 pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def) {
     pa_assert(m);
-    pa_assert(channels > 0);
-    pa_assert(channels <= PA_CHANNELS_MAX);
+    pa_assert(pa_channels_valid(channels));
     pa_assert(def < PA_CHANNEL_MAP_DEF_MAX);
 
     pa_channel_map_init(m);
@@ -401,8 +400,7 @@ pa_channel_map* pa_channel_map_init_extend(pa_channel_map *m, unsigned channels,
     unsigned c;
 
     pa_assert(m);
-    pa_assert(channels > 0);
-    pa_assert(channels <= PA_CHANNELS_MAX);
+    pa_assert(pa_channels_valid(channels));
     pa_assert(def < PA_CHANNEL_MAP_DEF_MAX);
 
     pa_channel_map_init(m);
@@ -538,6 +536,12 @@ pa_channel_map *pa_channel_map_parse(pa_channel_map *rmap, const char *s) {
         map.map[0] = PA_CHANNEL_POSITION_LEFT;
         map.map[1] = PA_CHANNEL_POSITION_RIGHT;
         goto finish;
+    } else if (pa_streq(s, "surround-21")) {
+        map.channels = 3;
+        map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+        map.map[2] = PA_CHANNEL_POSITION_LFE;
+        goto finish;
     } else if (pa_streq(s, "surround-40")) {
         map.channels = 4;
         map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
@@ -617,7 +621,7 @@ int pa_channel_map_valid(const pa_channel_map *map) {
 
     pa_assert(map);
 
-    if (map->channels <= 0 || map->channels > PA_CHANNELS_MAX)
+    if (!pa_channels_valid(map->channels))
         return 0;
 
     for (c = 0; c < map->channels; c++)