On 12/6/22 08:53, Carlos Rafael Giani wrote:
These audio codecs are used in sound bars and digital TVs, and benefitThe question is "how is the stream transported". In most implementations
from off-loading to a DSP. In particular, Dolby Atmos and MPEG-H 3D audio
spatialization is done in dedicated DSPs. Thus, adding these codecs to
the Compress-Offload API makes sense.
for these formats, the DSP is on the receiver side and the transport
happens with an IEC61937 format - which does not require the use of the
compressed API.
Signed-off-by: Carlos Rafael Giani <crg7475@xxxxxxxxxxx>IIRC there are multiple flavors of DTS, off the top of my head DTS-ES,
---
include/uapi/sound/compress_params.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/uapi/sound/compress_params.h b/include/uapi/sound/compress_params.h
index ddc77322d571..7a58e2026be3 100644
--- a/include/uapi/sound/compress_params.h
+++ b/include/uapi/sound/compress_params.h
@@ -43,7 +43,13 @@
#define SND_AUDIOCODEC_BESPOKE ((__u32) 0x0000000E)
#define SND_AUDIOCODEC_ALAC ((__u32) 0x0000000F)
#define SND_AUDIOCODEC_APE ((__u32) 0x00000010)
-#define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_APE
+#define SND_AUDIOCODEC_AC3 ((__u32) 0x00000011)
+#define SND_AUDIOCODEC_EAC3 ((__u32) 0x00000012)
+#define SND_AUDIOCODEC_TRUEHD ((__u32) 0x00000013)
+#define SND_AUDIOCODEC_DTS ((__u32) 0x00000014)
96, HD, Master Audio. "DTS" only doesn't even begin to describe the
possible variants.
+/* MPEG-H 3D Audio Stream (MHAS) as defined in ISO/IEC 23008-3 */Doesn't this need the definition of profiles and various types of
+#define SND_AUDIOCODEC_MHAS ((__u32) 0x00000015)
formats - classic problem with designed-by-committee MPEG codecs.
+#define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_MHAS
/*
* Profile and modes are listed with bit masks. This allows for a