diff options
| author | Shengjiu Wang <shengjiu.wang@nxp.com> | 2024-12-12 15:45:04 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-12-13 08:57:06 +0000 |
| commit | f4425e3ab2f796d442a44f31262eade9b6427ff7 (patch) | |
| tree | d3230ddfc9796bd777951130890d119dfe2a2480 | |
| parent | fac04efc5c793dccbd07e2d59af9f90b7fc0dca4 (diff) | |
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@perex.cz>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://patch.msgid.link/20241212074509.3445859-2-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | include/uapi/sound/compress_params.h | 23 |
1 files 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 |