[alsa-devel] [PATCH] ALSA: compress: Add DSP private metadata interface

[Takashi Iwai]

Add Vinod to Cc.

On Mon, 22 Feb 2016 18:54:31 +0100,
Tim Sheridan wrote:
> 
> Provides an area to communicate with a DSP to implement support for
> weird and wonderful features of DSP hardware that aren't supported in
> the compress offload API.
> 
> Signed-off-by: Tim Sheridan <tim.sheridan at imgtec.com>

Don't you have the code actually implement this ioctl?
Or, is there anything I miss?


thanks,

Takashi

> ---
>  include/uapi/sound/compress_offload.h |    6 +++++-
>  1 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/include/uapi/sound/compress_offload.h b/include/uapi/sound/compress_offload.h
> index e00d8cb..65ac445 100644
> --- a/include/uapi/sound/compress_offload.h
> +++ b/include/uapi/sound/compress_offload.h
> @@ -30,7 +30,7 @@
>  #include <sound/compress_params.h>
>  
>  
> -#define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 1, 2)
> +#define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 1, 3)
>  /**
>   * struct snd_compressed_buffer - compressed buffer
>   * @fragment_size: size of buffer fragment in bytes
> @@ -150,6 +150,8 @@ struct snd_compr_metadata {
>   * SNDRV_COMPRESS_SET_PARAMS: Set codec and stream parameters
>   * Note: only codec params can be changed runtime and stream params cant be
>   * SNDRV_COMPRESS_GET_PARAMS: Query codec params
> + * SNDRV_COMPRESS_SET_DSP_PRIV: Set private DSP metadata
> + * SNDRV_COMPRESS_GET_DSP_PRIV: Get private DSP metadata
>   * SNDRV_COMPRESS_TSTAMP: get the current timestamp value
>   * SNDRV_COMPRESS_AVAIL: get the current buffer avail value.
>   * This also queries the tstamp properties
> @@ -171,6 +173,8 @@ struct snd_compr_metadata {
>  						 struct snd_compr_metadata)
>  #define SNDRV_COMPRESS_GET_METADATA	_IOWR('C', 0x15,\
>  						 struct snd_compr_metadata)
> +#define SNDRV_COMPRESS_SET_DSP_PRIV	_IOW('C', 0x16, struct snd_compr_metadata)
> +#define SNDRV_COMPRESS_GET_DSP_PRIV	_IOWR('C', 0x17, struct snd_compr_metadata)
>  #define SNDRV_COMPRESS_TSTAMP		_IOR('C', 0x20, struct snd_compr_tstamp)
>  #define SNDRV_COMPRESS_AVAIL		_IOR('C', 0x21, struct snd_compr_avail)
>  #define SNDRV_COMPRESS_PAUSE		_IO('C', 0x30)
> -- 
> 1.7.1
> 
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