Update of /cvsroot/alsa/alsa-lib/include
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv23677/include
Modified Files:
mixer.h
Log Message:
Initial proposal for selection of abstraction in simple mixer API.
Added dB related functions (no implementation yet).
Index: mixer.h
===================================================================
RCS file: /cvsroot/alsa/alsa-lib/include/mixer.h,v
retrieving revision 1.49
retrieving revision 1.50
diff -u -r1.49 -r1.50
--- mixer.h 9 Sep 2002 14:24:56 -0000 1.49
+++ mixer.h 14 Mar 2004 18:39:58 -0000 1.50
@@ -139,12 +139,33 @@
SND_MIXER_SCHN_MONO = SND_MIXER_SCHN_FRONT_LEFT
} snd_mixer_selem_channel_id_t;
+/** Mixer simple element - register options - abstraction level */
+enum snd_mixer_selem_regopt_abstract {
+ /** no abstraction - try use all universal controls from driver */
+ SND_MIXER_SABSTRACT_NONE = 0,
+ /** basic abstraction - Master,PCM,CD,Aux,Record-Gain etc. */
+ SND_MIXER_SABSTRACT_BASIC,
+};
+
+/** Mixer simple element - register options */
+struct snd_mixer_selem_regopt {
+ /** structure version */
+ int ver;
+ /** v1: abstract layer selection */
+ enum snd_mixer_selem_regopt_abstract abstract;
+ /** v1: playback PCM connected to mixer device */
+ snd_pcm_t *playback_pcm;
+ /** v1: playback PCM connected to mixer device */
+ snd_pcm_t *capture_pcm;
+};
+
/** Mixer simple element identifier */
typedef struct _snd_mixer_selem_id snd_mixer_selem_id_t;
const char *snd_mixer_selem_channel_name(snd_mixer_selem_channel_id_t channel);
-int snd_mixer_selem_register(snd_mixer_t *mixer, void *arg,
+int snd_mixer_selem_register(snd_mixer_t *mixer,
+ struct snd_mixer_selem_regopt *options,
snd_mixer_class_t **classp);
void snd_mixer_selem_get_id(snd_mixer_elem_t *element,
snd_mixer_selem_id_t *id);
@@ -173,22 +194,32 @@
int snd_mixer_selem_get_playback_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long *value);
int snd_mixer_selem_get_capture_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long *value);
+int snd_mixer_selem_get_playback_dB(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long *value);
+int snd_mixer_selem_get_capture_dB(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long *value);
int snd_mixer_selem_get_playback_switch(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, int *value);
int snd_mixer_selem_get_capture_switch(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, int *value);
int snd_mixer_selem_set_playback_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long value);
int snd_mixer_selem_set_capture_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long value);
+int snd_mixer_selem_set_playback_dB(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long value, int dir);
+int snd_mixer_selem_set_capture_dB(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, long value, int dir);
int snd_mixer_selem_set_playback_volume_all(snd_mixer_elem_t *elem, long value);
int snd_mixer_selem_set_capture_volume_all(snd_mixer_elem_t *elem, long value);
+int snd_mixer_selem_set_playback_volume_dB(snd_mixer_elem_t *elem, long value, int
dir);
+int snd_mixer_selem_set_capture_volume_dB(snd_mixer_elem_t *elem, long value, int
dir);
int snd_mixer_selem_set_playback_switch(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, int value);
int snd_mixer_selem_set_capture_switch(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel, int value);
int snd_mixer_selem_set_playback_switch_all(snd_mixer_elem_t *elem, int value);
int snd_mixer_selem_set_capture_switch_all(snd_mixer_elem_t *elem, int value);
void snd_mixer_selem_get_playback_volume_range(snd_mixer_elem_t *elem,
long *min, long *max);
+void snd_mixer_selem_get_playback_dB_range(snd_mixer_elem_t *elem,
+ long *min, long *max);
void snd_mixer_selem_set_playback_volume_range(snd_mixer_elem_t *elem,
long min, long max);
void snd_mixer_selem_get_capture_volume_range(snd_mixer_elem_t *elem,
long *min, long *max);
+void snd_mixer_selem_get_capture_dB_range(snd_mixer_elem_t *elem,
+ long *min, long *max);
void snd_mixer_selem_set_capture_volume_range(snd_mixer_elem_t *elem,
long min, long max);
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