mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-10-29 05:40:25 -04:00
Removed old mixer API functions.
Added simple control layer (experimental).
This commit is contained in:
Jaroslav Kysela
parent
3c9755bb7e
commit
273d115de0
11 changed files with 807 additions and 883 deletions
140
include/mixer.h
140
include/mixer.h
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@ -5,58 +5,108 @@
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* *
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****************************************************************************/
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typedef struct snd_mixer_callbacks {
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void *private_data; /* should be used with an application */
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void (*rebuild) (void *private_data);
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void (*element) (void *private_data, int cmd, snd_mixer_eid_t *eid);
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void (*group) (void *private_data, int cmd, snd_mixer_gid_t *gid);
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void *reserved[28]; /* reserved for the future use - must be NULL!!! */
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} snd_mixer_callbacks_t;
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typedef struct {
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char *name;
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int weight;
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} snd_mixer_weight_entry_t;
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typedef struct snd_mixer snd_mixer_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct snd_mixer snd_mixer_t;
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int snd_mixer_open(snd_mixer_t **handle, int card, int device);
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int snd_mixer_open(snd_mixer_t **handle, int card);
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int snd_mixer_close(snd_mixer_t *handle);
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int snd_mixer_file_descriptor(snd_mixer_t *handle);
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int snd_mixer_info(snd_mixer_t *handle, snd_mixer_info_t * info);
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int snd_mixer_elements(snd_mixer_t *handle, snd_mixer_elements_t * elements);
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int snd_mixer_routes(snd_mixer_t *handle, snd_mixer_routes_t * routes);
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int snd_mixer_groups(snd_mixer_t *handle, snd_mixer_groups_t * groups);
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int snd_mixer_group_read(snd_mixer_t *handle, snd_mixer_group_t * group);
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int snd_mixer_group_write(snd_mixer_t *handle, snd_mixer_group_t * group);
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int snd_mixer_element_info(snd_mixer_t *handle, snd_mixer_element_info_t * info);
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int snd_mixer_element_read(snd_mixer_t *handle, snd_mixer_element_t * element);
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int snd_mixer_element_write(snd_mixer_t *handle, snd_mixer_element_t * element);
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int snd_mixer_get_filter(snd_mixer_t *handle, snd_mixer_filter_t * filter);
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int snd_mixer_put_filter(snd_mixer_t *handle, snd_mixer_filter_t * filter);
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int snd_mixer_read(snd_mixer_t *handle, snd_mixer_callbacks_t * callbacks);
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void snd_mixer_set_bit(unsigned int *bitmap, int bit, int val);
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int snd_mixer_get_bit(unsigned int *bitmap, int bit);
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const char *snd_mixer_channel_name(int channel);
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int snd_mixer_element_has_info(snd_mixer_eid_t *eid);
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int snd_mixer_element_info_build(snd_mixer_t *handle, snd_mixer_element_info_t * info);
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int snd_mixer_element_info_free(snd_mixer_element_info_t * info);
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int snd_mixer_element_has_control(snd_mixer_eid_t *eid);
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int snd_mixer_element_build(snd_mixer_t *handle, snd_mixer_element_t * element);
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int snd_mixer_element_free(snd_mixer_element_t * element);
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void snd_mixer_sort_eid_name_index(snd_mixer_eid_t *list, int count);
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void snd_mixer_sort_eid_table(snd_mixer_eid_t *list, int count, snd_mixer_weight_entry_t *table);
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void snd_mixer_sort_gid_name_index(snd_mixer_gid_t *list, int count);
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void snd_mixer_sort_gid_table(snd_mixer_gid_t *list, int count, snd_mixer_weight_entry_t *table);
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extern snd_mixer_weight_entry_t *snd_mixer_default_weights;
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#ifdef __cplusplus
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}
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#endif
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/*
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* Simple (legacy) mixer API
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*/
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typedef enum {
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SND_MIXER_CHN_FRONT_LEFT = 0,
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SND_MIXER_CHN_FRONT_RIGHT,
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SND_MIXER_CHN_FRONT_CENTER,
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SND_MIXER_CHN_REAR_LEFT,
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SND_MIXER_CHN_REAR_RIGHT,
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SND_MIXER_CHN_WOOFER,
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SND_MIXER_CHN_LAST = 31,
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SND_MIXER_CHN_MONO = SND_MIXER_CHN_FRONT_LEFT
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} snd_mixer_channel_id_t;
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#define SND_MIXER_CHN_MASK_MONO (1<<SND_MIXER_CHN_MONO)
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#define SND_MIXER_CHN_MASK_FRONT_LEFT (1<<SND_MIXER_CHN_FRONT_LEFT)
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#define SND_MIXER_CHN_MASK_FRONT_RIGHT (1<<SND_MIXER_CHN_FRONT_RIGHT)
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#define SND_MIXER_CHN_MASK_FRONT_CENTER (1<<SND_MIXER_CHN_FRONT_CENTER)
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#define SND_MIXER_CHN_MASK_REAR_LEFT (1<<SND_MIXER_CHN_REAR_LEFT)
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#define SND_MIXER_CHN_MASK_REAR_RIGHT (1<<SND_MIXER_CHN_REAR_RIGHT)
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#define SND_MIXER_CHN_MASK_WOOFER (1<<SND_MIXER_CHN_WOOFER)
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#define SND_MIXER_CHN_MASK_STEREO (SND_MIXER_CHN_MASK_FRONT_LEFT|SND_MIXER_CHN_MASK_FRONT_RIGHT)
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#define SND_MIXER_SCTCAP_VOLUME (1<<0)
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#define SND_MIXER_SCTCAP_JOINTLY_VOLUME (1<<1)
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#define SND_MIXER_SCTCAP_MUTE (1<<2)
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#define SND_MIXER_SCTCAP_JOINTLY_MUTE (1<<3)
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#define SND_MIXER_SCTCAP_CAPTURE (1<<4)
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#define SND_MIXER_SCTCAP_JOINTLY_CAPTURE (1<<5)
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#define SND_MIXER_SCTCAP_EXCL_CAPTURE (1<<6)
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typedef struct snd_mixer_sid {
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unsigned char name[60];
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unsigned int index;
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} snd_mixer_sid_t;
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typedef struct snd_mixer_simple_control_list {
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unsigned int controls_offset; /* W: first control ID to get */
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unsigned int controls_request; /* W: count of control IDs to get */
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unsigned int controls_count; /* R: count of available (set) IDs */
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unsigned int controls; /* R: count of all available controls */
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snd_mixer_sid_t *pids; /* W: IDs */
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char reserved[50];
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} snd_mixer_simple_control_list_t;
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typedef struct snd_mixer_simple_control {
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snd_mixer_sid_t sid; /* WR: simple control identification */
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unsigned int caps; /* RO: capabilities */
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unsigned int channels; /* RO: bitmap of active channels */
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unsigned int mute; /* RW: bitmap of muted channels */
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unsigned int capture; /* RW: bitmap of capture channels */
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int capture_group; /* RO: capture group (for exclusive capture) */
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long min; /* RO: minimum value */
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long max; /* RO: maximum value */
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char reserved[32];
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union {
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struct {
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long front_left; /* front left value */
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long front_right; /* front right value */
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long front_center; /* front center */
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long rear_left; /* left rear */
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long rear_right; /* right rear */
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long woofer; /* woofer */
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} names;
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long values[32];
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} volume; /* RW */
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} snd_mixer_simple_control_t;
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typedef struct snd_mixer_simple_callbacks {
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void *private_data; /* may be used by an application */
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void (*rebuild) (snd_mixer_t *handle, void *private_data);
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void (*value) (snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *id);
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void (*change) (snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *id);
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void (*add) (snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *id);
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void (*remove) (snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *id);
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void *reserved[58]; /* reserved for future use - must be NULL!!! */
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} snd_mixer_simple_callbacks_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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const char *snd_mixer_simple_channel_name(int channel);
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int snd_mixer_simple_control_list(snd_mixer_t *handle, snd_mixer_simple_control_list_t *list);
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int snd_mixer_simple_control_read(snd_mixer_t *handle, snd_mixer_simple_control_t *simple);
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int snd_mixer_simple_control_write(snd_mixer_t *handle, snd_mixer_simple_control_t *simple);
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int snd_mixer_simple_read(snd_mixer_t *handle, snd_mixer_simple_callbacks_t *callbacks);
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#ifdef __cplusplus
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}
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