diff options
| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2014-12-09 00:10:42 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-12-10 10:47:37 +0100 |
| commit | 5cd1d3f47a6321612a51ab88ffe8ef65120fcbe0 (patch) | |
| tree | f2f537e9ec9185754441c37f7896788a76795312 /sound/firewire/oxfw/oxfw.h | |
| parent | 5b59d8098d2a3fa8ea4ad07b96f62c00c3b3e8d3 (diff) | |
ALSA: oxfw: Change the way to make PCM rules/constraints
In previous commit, this driver can get to know stream formations at
each supported sampling rates. This commit uses it to make PCM
rules/constraints and obsoletes hard-coded rules/constraints.
For this purpose, this commit adds 'struct snd_oxfw_stream_formation' and
snd_oxfw_stream_parse_format() to parse data channel formation of data
block.
According to datasheet of OXFW970/971, they support 32.0kHz to 196.0kHz.
As long as developers investigate, some devices are confirmed to have
several formats for the same sampling rate.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/oxfw/oxfw.h')
| -rw-r--r-- | sound/firewire/oxfw/oxfw.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/sound/firewire/oxfw/oxfw.h b/sound/firewire/oxfw/oxfw.h index a7031d414441..9c3d3e352665 100644 --- a/sound/firewire/oxfw/oxfw.h +++ b/sound/firewire/oxfw/oxfw.h @@ -30,19 +30,24 @@ struct device_info { const char *driver_name; const char *vendor_name; const char *model_name; - int (*pcm_constraints)(struct snd_pcm_runtime *runtime); unsigned int mixer_channels; u8 mute_fb_id; u8 volume_fb_id; }; +/* This is an arbitrary number for convinience. */ +#define SND_OXFW_STREAM_FORMAT_ENTRIES 10 struct snd_oxfw { struct snd_card *card; struct fw_unit *unit; const struct device_info *device_info; struct mutex mutex; + + u8 *rx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES]; + bool assumed; struct cmp_connection in_conn; struct amdtp_stream rx_stream; + bool mute; s16 volume[6]; s16 volume_min; @@ -88,8 +93,18 @@ void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw); void snd_oxfw_stream_destroy_simplex(struct snd_oxfw *oxfw); void snd_oxfw_stream_update_simplex(struct snd_oxfw *oxfw); -int firewave_constraints(struct snd_pcm_runtime *runtime); -int lacie_speakers_constraints(struct snd_pcm_runtime *runtime); +struct snd_oxfw_stream_formation { + unsigned int rate; + unsigned int pcm; + unsigned int midi; +}; +int snd_oxfw_stream_parse_format(u8 *format, + struct snd_oxfw_stream_formation *formation); +int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw, + enum avc_general_plug_dir dir, + struct snd_oxfw_stream_formation *formation); +int snd_oxfw_stream_discover(struct snd_oxfw *oxfw); + int snd_oxfw_create_pcm(struct snd_oxfw *oxfw); int snd_oxfw_create_mixer(struct snd_oxfw *oxfw); |