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Message-Id: <20241029022057.816402-2-shengjiu.wang@nxp.com>
Date: Tue, 29 Oct 2024 10:20:52 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: vkoul@...nel.org,
perex@...ex.cz,
tiwai@...e.com,
alsa-devel@...a-project.org,
linux-sound@...r.kernel.org,
linux-kernel@...r.kernel.org,
shengjiu.wang@...il.com,
Xiubo.Lee@...il.com,
festevam@...il.com,
nicoleotsuka@...il.com,
lgirdwood@...il.com,
broonie@...nel.org,
linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v5 1/6] ALSA: compress: Add output rate and output format support
Add 'pcm_format' for struct snd_codec, add 'pcm_formats' for
struct snd_codec_desc, these are used for accelerator usage.
Current accelerator example is sample rate converter (SRC).
Define struct snd_codec_desc_src for descript minmum and maxmum
sample rates. And add 'src_d' in union snd_codec_options
structure. These are mainly used for capbility query.
Signed-off-by: Jaroslav Kysela <perex@...ex.cz>
Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
Acked-by: Jaroslav Kysela <perex@...ex.cz>
---
include/uapi/sound/compress_params.h | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/include/uapi/sound/compress_params.h b/include/uapi/sound/compress_params.h
index ddc77322d571..bc7648a30746 100644
--- a/include/uapi/sound/compress_params.h
+++ b/include/uapi/sound/compress_params.h
@@ -334,6 +334,14 @@ union snd_codec_options {
struct snd_dec_wma wma_d;
struct snd_dec_alac alac_d;
struct snd_dec_ape ape_d;
+ struct {
+ __u32 out_sample_rate;
+ } src_d;
+} __attribute__((packed, aligned(4)));
+
+struct snd_codec_desc_src {
+ __u32 out_sample_rate_min;
+ __u32 out_sample_rate_max;
} __attribute__((packed, aligned(4)));
/** struct snd_codec_desc - description of codec capabilities
@@ -347,6 +355,9 @@ union snd_codec_options {
* @modes: Supported modes. See SND_AUDIOMODE defines
* @formats: Supported formats. See SND_AUDIOSTREAMFORMAT defines
* @min_buffer: Minimum buffer size handled by codec implementation
+ * @pcm_formats: Output (for decoders) or input (for encoders)
+ * PCM formats (required to accel mode, 0 for other modes)
+ * @u_space: union space (for codec dependent data)
* @reserved: reserved for future use
*
* This structure provides a scalar value for profiles, modes and stream
@@ -370,7 +381,12 @@ struct snd_codec_desc {
__u32 modes;
__u32 formats;
__u32 min_buffer;
- __u32 reserved[15];
+ __u32 pcm_formats;
+ union {
+ __u32 u_space[6];
+ struct snd_codec_desc_src src;
+ } __attribute__((packed, aligned(4)));
+ __u32 reserved[8];
} __attribute__((packed, aligned(4)));
/** struct snd_codec
@@ -395,6 +411,8 @@ struct snd_codec_desc {
* @align: Block alignment in bytes of an audio sample.
* Only required for PCM or IEC formats.
* @options: encoder-specific settings
+ * @pcm_format: Output (for decoders) or input (for encoders)
+ * PCM formats (required to accel mode, 0 for other modes)
* @reserved: reserved for future use
*/
@@ -411,7 +429,8 @@ struct snd_codec {
__u32 format;
__u32 align;
union snd_codec_options options;
- __u32 reserved[3];
+ __u32 pcm_format;
+ __u32 reserved[2];
} __attribute__((packed, aligned(4)));
#endif
--
2.34.1
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