Add shorthands for audio channel maps

(cherry picked from commit 75977c876f7169e6e3da5605d86d78706bbfd130)

Add shorthands for audio channel maps
(cherry picked from commit 75977c876f7169e6e3da5605d86d78706bbfd130)
c9a595bc · Rémi Denis-Courmont · fef5548a · c9a595bc
Commit c9a595bc authored Mar 03, 2012 by Rémi Denis-Courmont
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include/vlc_aout.h include/vlc_aout.h +11 -0

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--- a/include/vlc_aout.h
+++ b/include/vlc_aout.h
@@ -120,6 +120,17 @@ typedef int32_t vlc_fixed_t;
 #define AOUT_CHAN_MIDDLERIGHT       0x200
 #define AOUT_CHAN_LFE               0x1000

+#define AOUT_CHANS_FRONT  (AOUT_CHAN_LEFT       | AOUT_CHAN_RIGHT)
+#define AOUT_CHANS_MIDDLE (AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT)
+#define AOUT_CHANS_REAR   (AOUT_CHAN_REARLEFT   | AOUT_CHAN_REARRIGHT)
+
+#define AOUT_CHANS_STEREO (AOUT_CHANS_FRONT)
+#define AOUT_CHANS_4_0    (AOUT_CHANS_FRONT | AOUT_CHANS_REAR)
+#define AOUT_CHANS_4_1    (AOUT_CHANS_4_0 | AOUT_CHAN_LFE)
+#define AOUT_CHANS_5_0    (AOUT_CHANS_4_0 | AOUT_CHAN_CENTER)
+#define AOUT_CHANS_5_1    (AOUT_CHANS_5_0 | AOUT_CHAN_LFE)
+#define AOUT_CHANS_7_1    (AOUT_CHANS_5_1 | AOUT_CHANS_MIDDLE)
+
 /* Values available for original channels only */
 #define AOUT_CHAN_DOLBYSTEREO       0x10000
 #define AOUT_CHAN_DUALMONO          0x20000