linux-kernel - [PATCH] ALSA: compress: Add AC3, EAC3, TrueHD, DTS, MPEG-H 3D Audio Stream (MHAS)

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Message-Id: <20221206145317.99934-1-crg7475@mailbox.org>
Date:   Tue,  6 Dec 2022 15:53:17 +0100
From:   Carlos Rafael Giani <crg7475@...lbox.org>
To:     Vinod Koul <vkoul@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ALSA: compress: Add AC3, EAC3, TrueHD, DTS, MPEG-H 3D Audio Stream (MHAS)

These audio codecs are used in sound bars and digital TVs, and benefit
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.

Signed-off-by: Carlos Rafael Giani <crg7475@...lbox.org>
---
 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)
+/* MPEG-H 3D Audio Stream (MHAS) as defined in ISO/IEC 23008-3 */
+#define SND_AUDIOCODEC_MHAS                  ((__u32) 0x00000015)
+#define SND_AUDIOCODEC_MAX                   SND_AUDIOCODEC_MHAS
 
 /*
  * Profile and modes are listed with bit masks. This allows for a
-- 
2.34.1