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Diffstat (limited to 'alsa-lib/src/mixer/simple.c')
| -rw-r--r-- | alsa-lib/src/mixer/simple.c | 1056 |
1 files changed, 0 insertions, 1056 deletions
diff --git a/alsa-lib/src/mixer/simple.c b/alsa-lib/src/mixer/simple.c deleted file mode 100644 index 39790b2..0000000 --- a/alsa-lib/src/mixer/simple.c +++ /dev/null @@ -1,1056 +0,0 @@ -/** - * \file mixer/simple.c - * \brief Mixer Simple Element Class Interface - * \author Jaroslav Kysela <perex@perex.cz> - * \author Abramo Bagnara <abramo@alsa-project.org> - * \date 2001-2004 - * - * Mixer simple element class interface. - */ -/* - * Mixer Interface - simple controls - * Copyright (c) 2000,2004 by Jaroslav Kysela <perex@perex.cz> - * Copyright (c) 2001 by Abramo Bagnara <abramo@alsa-project.org> - * - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation; either version 2.1 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <fcntl.h> -#include <sys/ioctl.h> -#include <math.h> -#include "mixer_local.h" -#include "mixer_simple.h" - -/** - * \brief Register mixer simple element class - * \param mixer Mixer handle - * \param options Options container - * \param classp Pointer to returned mixer simple element class handle (or NULL) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_register(snd_mixer_t *mixer, - struct snd_mixer_selem_regopt *options, - snd_mixer_class_t **classp) -{ - if (options && options->ver == 1) { - if (options->device != NULL && - (options->playback_pcm != NULL || - options->capture_pcm != NULL)) - return -EINVAL; - if (options->device == NULL && - options->playback_pcm == NULL && - options->capture_pcm == NULL) - return -EINVAL; - } - if (options == NULL || - (options->ver == 1 && options->abstract == SND_MIXER_SABSTRACT_NONE)) { - int err = snd_mixer_simple_none_register(mixer, options, classp); - if (err < 0) - return err; - if (options != NULL) { - err = snd_mixer_attach(mixer, options->device); - if (err < 0) - return err; - } - return 0; - } else if (options->ver == 1) { - if (options->abstract == SND_MIXER_SABSTRACT_BASIC) - return snd_mixer_simple_basic_register(mixer, options, classp); - } - return -ENXIO; -} - -#ifndef DOC_HIDDEN - -#define CHECK_BASIC(xelem) \ -{ \ - assert(xelem); \ - assert((xelem)->type == SND_MIXER_ELEM_SIMPLE); \ -} - -#define CHECK_DIR(xelem, xwhat) \ -{ \ - unsigned int xcaps = ((sm_selem_t *)(elem)->private_data)->caps; \ - if (! (xcaps & (xwhat))) \ - return -EINVAL; \ -} - -#define CHECK_DIR_CHN(xelem, xwhat, xjoin, xchannel) \ -{ \ - unsigned int xcaps = ((sm_selem_t *)(elem)->private_data)->caps; \ - if (! (xcaps & (xwhat))) \ - return -EINVAL; \ - if (xcaps & (xjoin)) \ - xchannel = 0; \ -} - -#define CHECK_ENUM(xelem) \ - if (!((sm_selem_t *)(elem)->private_data)->caps & (SM_CAP_PENUM|SM_CAP_CENUM)) \ - return -EINVAL; - -#define COND_CAPS(xelem, what) \ - !!(((sm_selem_t *)(elem)->private_data)->caps & (what)) - -#endif /* !DOC_HIDDEN */ - -#ifndef DOC_HIDDEN -int snd_mixer_selem_compare(const snd_mixer_elem_t *c1, const snd_mixer_elem_t *c2) -{ - sm_selem_t *s1 = c1->private_data; - sm_selem_t *s2 = c2->private_data; - int res = strcmp(s1->id->name, s2->id->name); - if (res) - return res; - return s1->id->index - s2->id->index; -} -#endif - -/** - * \brief Find a mixer simple element - * \param mixer Mixer handle - * \param id Mixer simple element identifier - * \return mixer simple element handle or NULL if not found - */ -snd_mixer_elem_t *snd_mixer_find_selem(snd_mixer_t *mixer, - const snd_mixer_selem_id_t *id) -{ - struct list_head *list; - snd_mixer_elem_t *e; - sm_selem_t *s; - - list_for_each(list, &mixer->elems) { - e = list_entry(list, snd_mixer_elem_t, list); - if (e->type != SND_MIXER_ELEM_SIMPLE) - continue; - s = e->private_data; - if (!strcmp(s->id->name, id->name) && s->id->index == id->index) - return e; - } - return NULL; -} - -/** - * \brief Get mixer simple element identifier - * \param elem Mixer simple element handle - * \param id returned mixer simple element identifier - */ -void snd_mixer_selem_get_id(snd_mixer_elem_t *elem, - snd_mixer_selem_id_t *id) -{ - sm_selem_t *s; - assert(id); - CHECK_BASIC(elem); - s = elem->private_data; - *id = *s->id; -} - -/** - * \brief Get name part of mixer simple element identifier - * \param elem Mixer simple element handle - * \return name part of simple element identifier - */ -const char *snd_mixer_selem_get_name(snd_mixer_elem_t *elem) -{ - sm_selem_t *s; - CHECK_BASIC(elem); - s = elem->private_data; - return s->id->name; -} - -/** - * \brief Get index part of mixer simple element identifier - * \param elem Mixer simple element handle - * \return index part of simple element identifier - */ -unsigned int snd_mixer_selem_get_index(snd_mixer_elem_t *elem) -{ - sm_selem_t *s; - CHECK_BASIC(elem); - s = elem->private_data; - return s->id->index; -} - -/** - * \brief Return true if mixer simple element has only one volume control for both playback and capture - * \param elem Mixer simple element handle - * \return 0 separated control, 1 common control - */ -int snd_mixer_selem_has_common_volume(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_GVOLUME); -} - -/** - * \brief Return true if mixer simple element has only one switch control for both playback and capture - * \param elem Mixer simple element handle - * \return 0 separated control, 1 common control - */ -int snd_mixer_selem_has_common_switch(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_GSWITCH); -} - -/** - * \brief Return name of mixer simple element channel - * \param channel mixer simple element channel identifier - * \return channel name - */ -const char *snd_mixer_selem_channel_name(snd_mixer_selem_channel_id_t channel) -{ - static const char *const array[SND_MIXER_SCHN_LAST + 1] = { - [SND_MIXER_SCHN_FRONT_LEFT] = "Front Left", - [SND_MIXER_SCHN_FRONT_RIGHT] = "Front Right", - [SND_MIXER_SCHN_REAR_LEFT] = "Rear Left", - [SND_MIXER_SCHN_REAR_RIGHT] = "Rear Right", - [SND_MIXER_SCHN_FRONT_CENTER] = "Front Center", - [SND_MIXER_SCHN_WOOFER] = "Woofer", - [SND_MIXER_SCHN_SIDE_LEFT] = "Side Left", - [SND_MIXER_SCHN_SIDE_RIGHT] = "Side Right", - [SND_MIXER_SCHN_REAR_CENTER] = "Rear Center" - }; - const char *p; - assert(channel <= SND_MIXER_SCHN_LAST); - p = array[channel]; - if (!p) - return "?"; - return p; -} - -/** - * \brief Get info about the active state of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if not active, 1 if active - */ -int snd_mixer_selem_is_active(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return sm_selem_ops(elem)->is(elem, SM_PLAY, SM_OPS_IS_ACTIVE, 0); -} - -/** - * \brief Get info about channels of playback stream of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if not mono, 1 if mono - */ -int snd_mixer_selem_is_playback_mono(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return sm_selem_ops(elem)->is(elem, SM_PLAY, SM_OPS_IS_MONO, 0); -} - -/** - * \brief Get info about channels of playback stream of a mixer simple element - * \param elem Mixer simple element handle - * \param channel Mixer simple element channel identifier - * \return 0 if channel is not present, 1 if present - */ -int snd_mixer_selem_has_playback_channel(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel) -{ - CHECK_BASIC(elem); - return sm_selem_ops(elem)->is(elem, SM_PLAY, SM_OPS_IS_CHANNEL, (int)channel); -} - -/** - * \brief Get range for playback volume of a mixer simple element - * \param elem Mixer simple element handle - * \param min Pointer to returned minimum - * \param max Pointer to returned maximum - */ -int snd_mixer_selem_get_playback_volume_range(snd_mixer_elem_t *elem, - long *min, long *max) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_PVOLUME); - return sm_selem_ops(elem)->get_range(elem, SM_PLAY, min, max); -} - -/** - * \brief Get range in dB for playback volume of a mixer simple element - * \param elem Mixer simple element handle - * \param min Pointer to returned minimum (dB * 100) - * \param max Pointer to returned maximum (dB * 100) - */ -int snd_mixer_selem_get_playback_dB_range(snd_mixer_elem_t *elem, - long *min, long *max) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_PVOLUME); - return sm_selem_ops(elem)->get_dB_range(elem, SM_PLAY, min, max); -} - -/** - * \brief Set range for playback volume of a mixer simple element - * \param elem Mixer simple element handle - * \param min minimum volume value - * \param max maximum volume value - */ -int snd_mixer_selem_set_playback_volume_range(snd_mixer_elem_t *elem, - long min, long max) -{ - CHECK_BASIC(elem); - assert(min < max); - CHECK_DIR(elem, SM_CAP_PVOLUME); - return sm_selem_ops(elem)->set_range(elem, SM_PLAY, min, max); -} - -/** - * \brief Return info about playback volume control of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if no control is present, 1 if it's present - */ -int snd_mixer_selem_has_playback_volume(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_PVOLUME); -} - -/** - * \brief Return info about playback volume control of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if control is separated per channel, 1 if control acts on all channels together - */ -int snd_mixer_selem_has_playback_volume_joined(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_PVOLUME_JOIN); -} - -/** - * \brief Return info about playback switch control existence of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if no control is present, 1 if it's present - */ -int snd_mixer_selem_has_playback_switch(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_PSWITCH); -} - -/** - * \brief Return info about playback switch control of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if control is separated per channel, 1 if control acts on all channels together - */ -int snd_mixer_selem_has_playback_switch_joined(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_PSWITCH_JOIN); -} - -/** - * \brief Return corresponding dB value to an integer playback volume for a mixer simple element - * \param elem Mixer simple element handle - * \param value value to be converted to dB range - * \param dBvalue pointer to returned dB value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_ask_playback_vol_dB(snd_mixer_elem_t *elem, long value, long *dBvalue) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_PVOLUME); - return sm_selem_ops(elem)->ask_vol_dB(elem, SM_PLAY, value, dBvalue); -} - -/** - * \brief Return corresponding integer playback volume for given dB value for a mixer simple element - * \param elem Mixer simple element handle - * \param value value to be converted to dB range - * \param dir select direction (-1 = accurate or first bellow, 0 = accurate, 1 = accurate or first above) - * \param dBvalue pointer to returned dB value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_ask_playback_dB_vol(snd_mixer_elem_t *elem, long dBvalue, int dir, long *value) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_PVOLUME); - return sm_selem_ops(elem)->ask_dB_vol(elem, SM_PLAY, dBvalue, value, dir); -} - -/** - * \brief Return value of playback volume control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value pointer to returned value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_get_playback_volume(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long *value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_PVOLUME, SM_CAP_PVOLUME_JOIN, channel); - return sm_selem_ops(elem)->get_volume(elem, SM_PLAY, channel, value); -} - -/** - * \brief Return value of playback volume in dB control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value pointer to returned value (dB * 100) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_get_playback_dB(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long *value) -{ - unsigned int caps; - - CHECK_BASIC(elem); - caps = ((sm_selem_t *)elem->private_data)->caps; - if (!(caps & SM_CAP_PVOLUME)) - return -EINVAL; - if (caps & SM_CAP_PVOLUME_JOIN) - channel = 0; - return sm_selem_ops(elem)->get_dB(elem, SM_PLAY, channel, value); -} - -/** - * \brief Return value of playback switch control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value pointer to returned value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_get_playback_switch(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, int *value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_PSWITCH, SM_CAP_PSWITCH_JOIN, channel); - return sm_selem_ops(elem)->get_switch(elem, SM_PLAY, channel, value); -} - -/** - * \brief Set value of playback volume control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_playback_volume(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_PVOLUME, SM_CAP_PVOLUME_JOIN, channel); - return sm_selem_ops(elem)->set_volume(elem, SM_PLAY, channel, value); -} - -/** - * \brief Set value in dB of playback volume control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value control value in dB * 100 - * \param dir select direction (-1 = accurate or first bellow, 0 = accurate, 1 = accurate or first above) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_playback_dB(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long value, int dir) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_PVOLUME, SM_CAP_PVOLUME_JOIN, channel); - return sm_selem_ops(elem)->set_dB(elem, SM_PLAY, channel, value, dir); -} - -/** - * \brief Set value of playback volume control for all channels of a mixer simple element - * \param elem Mixer simple element handle - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_playback_volume_all(snd_mixer_elem_t *elem, long value) -{ - snd_mixer_selem_channel_id_t chn; - int err; - - for (chn = 0; chn < 32; chn++) { - if (!snd_mixer_selem_has_playback_channel(elem, chn)) - continue; - err = snd_mixer_selem_set_playback_volume(elem, chn, value); - if (err < 0) - return err; - if (chn == 0 && snd_mixer_selem_has_playback_volume_joined(elem)) - return 0; - } - return 0; -} - -/** - * \brief Set value in dB of playback volume control for all channels of a mixer simple element - * \param elem Mixer simple element handle - * \param value control value in dB * 100 - * \param dir select direction (-1 = accurate or first bellow, 0 = accurate, 1 = accurate or first above) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_playback_dB_all(snd_mixer_elem_t *elem, long value, int dir) -{ - snd_mixer_selem_channel_id_t chn; - int err; - - for (chn = 0; chn < 32; chn++) { - if (!snd_mixer_selem_has_playback_channel(elem, chn)) - continue; - err = snd_mixer_selem_set_playback_dB(elem, chn, value, dir); - if (err < 0) - return err; - if (chn == 0 && snd_mixer_selem_has_playback_volume_joined(elem)) - return 0; - } - return 0; -} - -/** - * \brief Set value of playback switch control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_playback_switch(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, int value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_PSWITCH, SM_CAP_PSWITCH_JOIN, channel); - return sm_selem_ops(elem)->set_switch(elem, SM_PLAY, channel, value); -} - -/** - * \brief Set value of playback switch control for all channels of a mixer simple element - * \param elem Mixer simple element handle - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_playback_switch_all(snd_mixer_elem_t *elem, int value) -{ - snd_mixer_selem_channel_id_t chn; - int err; - - CHECK_BASIC(elem); - for (chn = 0; chn < 32; chn++) { - if (!snd_mixer_selem_has_playback_channel(elem, chn)) - continue; - err = snd_mixer_selem_set_playback_switch(elem, chn, value); - if (err < 0) - return err; - if (chn == 0 && snd_mixer_selem_has_playback_switch_joined(elem)) - return 0; - } - return 0; -} - -/** - * \brief Get info about channels of capture stream of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if not mono, 1 if mono - */ -int snd_mixer_selem_is_capture_mono(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_CVOLUME|SM_CAP_CSWITCH); - return sm_selem_ops(elem)->is(elem, SM_CAPT, SM_OPS_IS_MONO, 0); -} - -/** - * \brief Get info about channels of capture stream of a mixer simple element - * \param elem Mixer simple element handle - * \param channel Mixer simple element channel identifier - * \return 0 if channel is not present, 1 if present - */ -int snd_mixer_selem_has_capture_channel(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_CVOLUME|SM_CAP_CSWITCH); - return sm_selem_ops(elem)->is(elem, SM_CAPT, SM_OPS_IS_CHANNEL, channel); -} - -/** - * \brief Get range for capture volume of a mixer simple element - * \param elem Mixer simple element handle - * \param min Pointer to returned minimum - * \param max Pointer to returned maximum - */ -int snd_mixer_selem_get_capture_volume_range(snd_mixer_elem_t *elem, - long *min, long *max) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_CVOLUME); - return sm_selem_ops(elem)->get_range(elem, SM_CAPT, min, max); -} - -/** - * \brief Get range in dB for capture volume of a mixer simple element - * \param elem Mixer simple element handle - * \param min Pointer to returned minimum (dB * 100) - * \param max Pointer to returned maximum (dB * 100) - */ -int snd_mixer_selem_get_capture_dB_range(snd_mixer_elem_t *elem, - long *min, long *max) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_CVOLUME); - return sm_selem_ops(elem)->get_dB_range(elem, SM_CAPT, min, max); -} - -/** - * \brief Set range for capture volume of a mixer simple element - * \param elem Mixer simple element handle - * \param min minimum volume value - * \param max maximum volume value - */ -int snd_mixer_selem_set_capture_volume_range(snd_mixer_elem_t *elem, - long min, long max) -{ - CHECK_BASIC(elem); - assert(min < max); - CHECK_DIR(elem, SM_CAP_CVOLUME); - return sm_selem_ops(elem)->set_range(elem, SM_CAPT, min, max); -} - -/** - * \brief Return info about capture volume control of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if no control is present, 1 if it's present - */ -int snd_mixer_selem_has_capture_volume(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_CVOLUME); -} - -/** - * \brief Return info about capture volume control of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if control is separated per channel, 1 if control acts on all channels together - */ -int snd_mixer_selem_has_capture_volume_joined(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_CVOLUME_JOIN); -} - -/** - * \brief Return info about capture switch control existence of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if no control is present, 1 if it's present - */ -int snd_mixer_selem_has_capture_switch(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_CSWITCH); -} - -/** - * \brief Return info about capture switch control of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if control is separated per channel, 1 if control acts on all channels together - */ -int snd_mixer_selem_has_capture_switch_joined(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_CSWITCH_JOIN); -} - -/** - * \brief Return info about capture switch control of a mixer simple element - * \param elem Mixer simple element handle - * \return 0 if control is separated per element, 1 if control acts on other elements too (i.e. only one active at a time inside a group) - */ -int snd_mixer_selem_has_capture_switch_exclusive(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - return COND_CAPS(elem, SM_CAP_CSWITCH_EXCL); -} - -/** - * \brief Return info about capture switch control of a mixer simple element - * \param elem Mixer simple element handle - * \return group for switch exclusivity (see #snd_mixer_selem_has_capture_switch_exclusive) - */ -int snd_mixer_selem_get_capture_group(snd_mixer_elem_t *elem) -{ - sm_selem_t *s; - CHECK_BASIC(elem); - s = elem->private_data; - if (! (s->caps & SM_CAP_CSWITCH_EXCL)) - return -EINVAL; - return s->capture_group; -} - -/** - * \brief Return corresponding dB value to an integer capture volume for a mixer simple element - * \param elem Mixer simple element handle - * \param value value to be converted to dB range - * \param dBvalue pointer to returned dB value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_ask_capture_vol_dB(snd_mixer_elem_t *elem, long value, long *dBvalue) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_CVOLUME); - return sm_selem_ops(elem)->ask_vol_dB(elem, SM_CAPT, value, dBvalue); -} - -/** - * \brief Return corresponding integer capture volume for given dB value for a mixer simple element - * \param elem Mixer simple element handle - * \param dBvalue dB value to be converted to integer range - * \param value pointer to returned integer value - * \param dir select direction (-1 = accurate or first bellow, 0 = accurate, 1 = accurate or first above) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_ask_capture_dB_vol(snd_mixer_elem_t *elem, long dBvalue, int dir, long *value) -{ - CHECK_BASIC(elem); - CHECK_DIR(elem, SM_CAP_CVOLUME); - return sm_selem_ops(elem)->ask_dB_vol(elem, SM_CAPT, dBvalue, value, dir); -} - -/** - * \brief Return value of capture volume control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value pointer to returned value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_get_capture_volume(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long *value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_CVOLUME, SM_CAP_CVOLUME_JOIN, channel); - return sm_selem_ops(elem)->get_volume(elem, SM_CAPT, channel, value); -} - -/** - * \brief Return value of capture volume in dB control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value pointer to returned value (dB * 100) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_get_capture_dB(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long *value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_CVOLUME, SM_CAP_CVOLUME_JOIN, channel); - return sm_selem_ops(elem)->get_dB(elem, SM_CAPT, channel, value); -} - -/** - * \brief Return value of capture switch control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value pointer to returned value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_get_capture_switch(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, int *value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_CSWITCH, SM_CAP_CSWITCH_JOIN, channel); - return sm_selem_ops(elem)->get_switch(elem, SM_CAPT, channel, value); -} - -/** - * \brief Set value of capture volume control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_capture_volume(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_CVOLUME, SM_CAP_CVOLUME_JOIN, channel); - return sm_selem_ops(elem)->set_volume(elem, SM_CAPT, channel, value); -} - -/** - * \brief Set value in dB of capture volume control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value control value in dB * 100 - * \param dir select direction (-1 = accurate or first bellow, 0 = accurate, 1 = accurate or first above) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_capture_dB(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, long value, int dir) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_CVOLUME, SM_CAP_CVOLUME_JOIN, channel); - return sm_selem_ops(elem)->set_dB(elem, SM_CAPT, channel, value, dir); -} - -/** - * \brief Set value of capture volume control for all channels of a mixer simple element - * \param elem Mixer simple element handle - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_capture_volume_all(snd_mixer_elem_t *elem, long value) -{ - snd_mixer_selem_channel_id_t chn; - int err; - - for (chn = 0; chn < 32; chn++) { - if (!snd_mixer_selem_has_capture_channel(elem, chn)) - continue; - err = snd_mixer_selem_set_capture_volume(elem, chn, value); - if (err < 0) - return err; - if (chn == 0 && snd_mixer_selem_has_capture_volume_joined(elem)) - return 0; - } - return 0; -} - -/** - * \brief Set value in dB of capture volume control for all channels of a mixer simple element - * \param elem Mixer simple element handle - * \param value control value in dB * 100 - * \param dir select direction (-1 = accurate or first bellow, 0 = accurate, 1 = accurate or first above) - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_capture_dB_all(snd_mixer_elem_t *elem, long value, int dir) -{ - snd_mixer_selem_channel_id_t chn; - int err; - - for (chn = 0; chn < 32; chn++) { - if (!snd_mixer_selem_has_capture_channel(elem, chn)) - continue; - err = snd_mixer_selem_set_capture_dB(elem, chn, value, dir); - if (err < 0) - return err; - if (chn == 0 && snd_mixer_selem_has_capture_volume_joined(elem)) - return 0; - } - return 0; -} - -/** - * \brief Set value of capture switch control of a mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_capture_switch(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t channel, int value) -{ - CHECK_BASIC(elem); - CHECK_DIR_CHN(elem, SM_CAP_CSWITCH, SM_CAP_CSWITCH_JOIN, channel); - return sm_selem_ops(elem)->set_switch(elem, SM_CAPT, channel, value); -} - -/** - * \brief Set value of capture switch control for all channels of a mixer simple element - * \param elem Mixer simple element handle - * \param value control value - * \return 0 on success otherwise a negative error code - */ -int snd_mixer_selem_set_capture_switch_all(snd_mixer_elem_t *elem, int value) -{ - snd_mixer_selem_channel_id_t chn; - int err; - - for (chn = 0; chn < 32; chn++) { - if (!snd_mixer_selem_has_capture_channel(elem, chn)) - continue; - err = snd_mixer_selem_set_capture_switch(elem, chn, value); - if (err < 0) - return err; - if (chn == 0 && snd_mixer_selem_has_capture_switch_joined(elem)) - return 0; - } - return 0; -} - -/** - * \brief Return true if mixer simple element is an enumerated control - * \param elem Mixer simple element handle - * \return 0 normal volume/switch control, 1 enumerated control - */ -int snd_mixer_selem_is_enumerated(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - CHECK_ENUM(elem); - return sm_selem_ops(elem)->is(elem, SM_PLAY, SM_OPS_IS_ENUMERATED, 0); -} - -/** - * \brief Return true if mixer simple enumerated element belongs to the playback direction - * \param elem Mixer simple element handle - * \return 0 no playback direction, 1 playback direction - */ -int snd_mixer_selem_is_enum_playback(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - CHECK_ENUM(elem); - return sm_selem_ops(elem)->is(elem, SM_PLAY, SM_OPS_IS_ENUMERATED, 1); -} - -/** - * \brief Return true if mixer simple enumerated element belongs to the capture direction - * \param elem Mixer simple element handle - * \return 0 no capture direction, 1 capture direction - */ -int snd_mixer_selem_is_enum_capture(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - CHECK_ENUM(elem); - return sm_selem_ops(elem)->is(elem, SM_CAPT, SM_OPS_IS_ENUMERATED, 1); -} - -/** - * \brief Return the number of enumerated items of the given mixer simple element - * \param elem Mixer simple element handle - * \return the number of enumerated items, otherwise a negative error code - */ -int snd_mixer_selem_get_enum_items(snd_mixer_elem_t *elem) -{ - CHECK_BASIC(elem); - CHECK_ENUM(elem); - return sm_selem_ops(elem)->is(elem, SM_PLAY, SM_OPS_IS_ENUMCNT, 0); -} - -/** - * \brief get the enumerated item string for the given mixer simple element - * \param elem Mixer simple element handle - * \param item the index of the enumerated item to query - * \param maxlen the maximal length to be stored - * \param buf the buffer to store the name string - * \return 0 if successful, otherwise a negative error code - */ -int snd_mixer_selem_get_enum_item_name(snd_mixer_elem_t *elem, - unsigned int item, - size_t maxlen, char *buf) -{ - CHECK_BASIC(elem); - CHECK_ENUM(elem); - return sm_selem_ops(elem)->enum_item_name(elem, item, maxlen, buf); -} - -/** - * \brief get the current selected enumerated item for the given mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param itemp the pointer to store the index of the enumerated item - * \return 0 if successful, otherwise a negative error code - */ -int snd_mixer_selem_get_enum_item(snd_mixer_elem_t *elem, - snd_mixer_selem_channel_id_t channel, - unsigned int *itemp) -{ - CHECK_BASIC(elem); - CHECK_ENUM(elem); - return sm_selem_ops(elem)->get_enum_item(elem, channel, itemp); -} - -/** - * \brief set the current selected enumerated item for the given mixer simple element - * \param elem Mixer simple element handle - * \param channel mixer simple element channel identifier - * \param item the enumerated item index - * \return 0 if successful, otherwise a negative error code - */ -int snd_mixer_selem_set_enum_item(snd_mixer_elem_t *elem, - snd_mixer_selem_channel_id_t channel, - unsigned int item) -{ - CHECK_BASIC(elem); - CHECK_ENUM(elem); - return sm_selem_ops(elem)->set_enum_item(elem, channel, item); -} - -/** - * \brief get size of #snd_mixer_selem_id_t - * \return size in bytes - */ -size_t snd_mixer_selem_id_sizeof() -{ - return sizeof(snd_mixer_selem_id_t); -} - -/** - * \brief allocate an invalid #snd_mixer_selem_id_t using standard malloc - * \param ptr returned pointer - * \return 0 on success otherwise negative error code - */ -int snd_mixer_selem_id_malloc(snd_mixer_selem_id_t **ptr) -{ - assert(ptr); - *ptr = calloc(1, sizeof(snd_mixer_selem_id_t)); - if (!*ptr) - return -ENOMEM; - return 0; -} - -/** - * \brief frees a previously allocated #snd_mixer_selem_id_t - * \param obj pointer to object to free - */ -void snd_mixer_selem_id_free(snd_mixer_selem_id_t *obj) -{ - free(obj); -} - -/** - * \brief copy one #snd_mixer_selem_id_t to another - * \param dst pointer to destination - * \param src pointer to source - */ -void snd_mixer_selem_id_copy(snd_mixer_selem_id_t *dst, const snd_mixer_selem_id_t *src) -{ - assert(dst && src); - *dst = *src; -} - -/** - * \brief Get name part of a mixer simple element identifier - * \param obj Mixer simple element identifier - * \return name part - */ -const char *snd_mixer_selem_id_get_name(const snd_mixer_selem_id_t *obj) -{ - assert(obj); - return obj->name; -} - -/** - * \brief Get index part of a mixer simple element identifier - * \param obj Mixer simple element identifier - * \return index part - */ -unsigned int snd_mixer_selem_id_get_index(const snd_mixer_selem_id_t *obj) -{ - assert(obj); - return obj->index; -} - -/** - * \brief Set name part of a mixer simple element identifier - * \param obj Mixer simple element identifier - * \param val name part - */ -void snd_mixer_selem_id_set_name(snd_mixer_selem_id_t *obj, const char *val) -{ - assert(obj); - strncpy(obj->name, val, sizeof(obj->name)); - obj->name[sizeof(obj->name)-1] = '\0'; -} - -/** - * \brief Set index part of a mixer simple element identifier - * \param obj Mixer simple element identifier - * \param val index part - */ -void snd_mixer_selem_id_set_index(snd_mixer_selem_id_t *obj, unsigned int val) -{ - assert(obj); - obj->index = val; -} |