This patch provides helper macros to get, set and init-in-struct both
frequency and bitrate fields in codec info structs for MPEG-2,4 AAC.
---
profiles/audio/a2dp-codecs.h | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/profiles/audio/a2dp-codecs.h b/profiles/audio/a2dp-codecs.h
index e2e1a77..1106bd2 100644
--- a/profiles/audio/a2dp-codecs.h
+++ b/profiles/audio/a2dp-codecs.h
@@ -106,6 +106,30 @@
#define AAC_CHANNELS_1 0x02
#define AAC_CHANNELS_2 0x01
+#define AAC_GET_BITRATE(a) ((a).bitrate1 << 16 | \
+ (a).bitrate2 << 8 | (a).bitrate3)
+#define AAC_GET_FREQUENCY(a) ((a).frequency1 << 4 | (a).frequency2)
+
+#define AAC_SET_BITRATE(a, b) \
+ do { \
+ (a).bitrate1 = (b >> 16) & 0x7f; \
+ (a).bitrate2 = (b >> 8) & 0xff; \
+ (a).bitrate3 = b & 0xff; \
+ } while (0)
+#define AAC_SET_FREQUENCY(a, f) \
+ do { \
+ (a).frequency1 = (f >> 4) & 0xff; \
+ (a).frequency2 = f & 0x0f; \
+ } while (0)
+
+#define AAC_INIT_BITRATE(b) \
+ .bitrate1 = (b >> 16) & 0x7f, \
+ .bitrate2 = (b >> 8) & 0xff, \
+ .bitrate3 = b & 0xff,
+#define AAC_INIT_FREQUENCY(f) \
+ .frequency1 = (f >> 4) & 0xff, \
+ .frequency2 = f & 0x0f,
+
#if __BYTE_ORDER == __LITTLE_ENDIAN
typedef struct {
--
1.9.3
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
