diff options
| author | Takashi Iwai <tiwai@suse.de> | 2014-07-10 09:50:19 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-07-10 16:58:15 +0200 |
| commit | 5646eda5851e6cfdfa22d41895e3f5daffa643d3 (patch) | |
| tree | 833064daee079d8c84874a4ec7cf1e7d025ac460 | |
| parent | 0ac8a52d4541adc284a4f3e8a1f6847236de1d8a (diff) | |
ALSA: pcm: Add timestamp type to sw_params
For allowing adjusting the timestamp type on the fly, add it to
sw_params. The existing ioctl is still kept for compatibility.
Along with this, increment the PCM protocol version.
The extension was suggested by Clemens Ladisch.
Acked-by: Jaroslav Kysela <perex@perex.cz>
Reviewed-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/uapi/sound/asound.h | 6 | ||||
| -rw-r--r-- | sound/core/pcm_native.c | 3 |
2 files changed, 7 insertions, 2 deletions
diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h index cbf7dc850a46..a7e062f91f39 100644 --- a/include/uapi/sound/asound.h +++ b/include/uapi/sound/asound.h @@ -139,7 +139,7 @@ struct snd_hwdep_dsp_image { * * *****************************************************************************/ -#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 11) +#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 12) typedef unsigned long snd_pcm_uframes_t; typedef signed long snd_pcm_sframes_t; @@ -391,7 +391,9 @@ struct snd_pcm_sw_params { snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */ snd_pcm_uframes_t silence_size; /* silence block size */ snd_pcm_uframes_t boundary; /* pointers wrap point */ - unsigned char reserved[64]; /* reserved for future */ + unsigned int tstamp_type; /* timestamp type */ + int pads; /* alignment, reserved */ + unsigned char reserved[56]; /* reserved for future */ }; struct snd_pcm_channel_info { diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 2372c49a8e84..81dedc381efd 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -543,6 +543,8 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream, if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) return -EINVAL; + if (params->tstamp_type > SNDRV_PCM_TSTAMP_TYPE_LAST) + return -EINVAL; if (params->avail_min == 0) return -EINVAL; if (params->silence_size >= runtime->boundary) { @@ -557,6 +559,7 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream, err = 0; snd_pcm_stream_lock_irq(substream); runtime->tstamp_mode = params->tstamp_mode; + runtime->tstamp_type = params->tstamp_type; runtime->period_step = params->period_step; runtime->control->avail_min = params->avail_min; runtime->start_threshold = params->start_threshold; |