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ASoC: fsl: add memory to memory function for ASRC

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Merge series from Shengjiu Wang <shengjiu.wang@nxp.com>:

This function is base on the accelerator implementation
for compress API:
04177158cf ("ALSA: compress_offload: introduce accel operation mode")

Audio signal processing also has the requirement for memory to
memory similar as Video.

This asrc memory to memory (memory ->asrc->memory) case is a non
real time use case.

User fills the input buffer to the asrc module, after conversion, then asrc
sends back the output buffer to user. So it is not a traditional ALSA playback
and capture case.

Because we had implemented the "memory -> asrc ->i2s device-> codec"
use case in ALSA.  Now the "memory->asrc->memory" needs
to reuse the code in asrc driver, so the patch 1 and patch 2 is for refining
the code to make it can be shared by the "memory->asrc->memory"
driver.

Other change is to add memory to memory support for two kinds of i.MX ASRC
modules.
This commit is contained in:
Mark Brown
2024-12-13 17:33:09 +00:00
parent 94c545aa53 b62eaff065
commit 5ce3beed07
9 changed files with 1261 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/uapi/sound/compress_params.h
+21 -2
View File
@@ -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