[alsa-devel] [PATCH 01/11] sound: core: Add debug-print helper function

[Mark Brown]

On Tue, May 08, 2012 at 03:56:25PM +0200, Ola Lilja wrote:
> Adds a function getting the stream-name as a string for
> a specific stream.

Adding Takashi as this is an ALSA core thing.  Always CC maintainers on
patches and always try to use subject lines matching the standard for
the subsystem.  Not cutting any text for his benefit.

> 
> Signed-off-by: Ola Lilja <ola.o.lilja at stericsson.com>
> ---
>  include/sound/pcm.h |    2 ++
>  sound/core/pcm.c    |   10 ++++++++++
>  2 files changed, 12 insertions(+), 0 deletions(-)
> 
> diff --git a/include/sound/pcm.h b/include/sound/pcm.h
> index 0d11128..8a153e6 100644
> --- a/include/sound/pcm.h
> +++ b/include/sound/pcm.h
> @@ -1073,4 +1073,6 @@ static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
>  
>  const char *snd_pcm_format_name(snd_pcm_format_t format);
>  
> +const char *snd_pcm_stream_str(struct snd_pcm_substream *substream);
> +
>  #endif /* __SOUND_PCM_H */
> diff --git a/sound/core/pcm.c b/sound/core/pcm.c
> index 1a3070b..9e83f00 100644
> --- a/sound/core/pcm.c
> +++ b/sound/core/pcm.c
> @@ -1187,6 +1187,16 @@ static void snd_pcm_proc_done(void)
>  #define snd_pcm_proc_done()
>  #endif /* CONFIG_PROC_FS */
>  
> +/**
> + * Get a string naming the direction of a stream
> + */
> +const char *snd_pcm_stream_str(struct snd_pcm_substream *substream)
> +{
> +	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
> +		return "Playback";
> +	else
> +		return "Capture";
> +}

This needs to be exported for modular builds, or perhaps just made a
static inline in the header.

>  
>  /*
>   *  ENTRY functions
> -- 
> 1.7.8.3
> 
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