mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-11-08 13:30:03 -05:00
Mixer v2.0 merged to the main CVS tree...
This commit is contained in:
Jaroslav Kysela
parent
3f541735e3
commit
a5b307a711
10 changed files with 536 additions and 167 deletions
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@ -1,6 +1,6 @@
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EXTRA_LTLIBRARIES=libmixer.la
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libmixer_la_SOURCES = mixer.c
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libmixer_la_SOURCES = mixer.c elements.c
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all: libmixer.la
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314
src/mixer/elements.c
Normal file
314
src/mixer/elements.c
Normal file
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@ -0,0 +1,314 @@
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/*
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* Mixer Interface - elements
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* Copyright (c) 1999 by Jaroslav Kysela <perex@jcu.cz>
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*
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <stdlib.h>
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#include <errno.h>
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#include "asoundlib.h"
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static inline void safe_free(void **ptr)
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{
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if (*ptr)
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free(*ptr);
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*ptr = NULL;
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}
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int snd_mixer_element_has_info(snd_mixer_eid_t *eid)
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{
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if (!eid)
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return -EINVAL;
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switch (eid->type) {
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case SND_MIXER_ETYPE_INPUT:
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case SND_MIXER_ETYPE_OUTPUT:
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case SND_MIXER_ETYPE_CAPTURE:
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case SND_MIXER_ETYPE_PLAYBACK:
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case SND_MIXER_ETYPE_ADC:
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case SND_MIXER_ETYPE_DAC:
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case SND_MIXER_ETYPE_SWITCH3:
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case SND_MIXER_ETYPE_VOLUME1:
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case SND_MIXER_ETYPE_VOLUME2:
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case SND_MIXER_ETYPE_ACCU1:
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case SND_MIXER_ETYPE_ACCU2:
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case SND_MIXER_ETYPE_ACCU3:
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case SND_MIXER_ETYPE_MUX1:
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case SND_MIXER_ETYPE_MUX2:
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case SND_MIXER_ETYPE_TONE_CONTROL1:
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case SND_MIXER_ETYPE_3D_EFFECT1:
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case SND_MIXER_ETYPE_PRE_EFFECT1:
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return 1;
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}
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return 0;
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}
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int snd_mixer_element_info_build(void *handle, snd_mixer_element_info_t *element)
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{
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int err;
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if (!handle || !element)
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return -EINVAL;
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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switch (element->eid.type) {
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case SND_MIXER_ETYPE_INPUT:
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case SND_MIXER_ETYPE_OUTPUT:
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element->data.io.voices_size = element->data.io.voices_over;
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element->data.io.voices = element->data.io.voices_over = 0;
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element->data.io.pvoices = (snd_mixer_voice_t *)malloc(element->data.io.voices_size * sizeof(snd_mixer_voice_t));
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if (!element->data.io.pvoices)
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return -ENOMEM;
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_CAPTURE:
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case SND_MIXER_ETYPE_PLAYBACK:
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element->data.pcm.devices_size = element->data.pcm.devices_over;
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element->data.pcm.devices = element->data.pcm.devices_over = 0;
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element->data.pcm.pdevices = (int *)malloc(element->data.pcm.devices_size * sizeof(int));
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if (!element->data.pcm.pdevices)
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return -ENOMEM;
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_SWITCH3:
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element->data.switch3.voices_size = element->data.switch3.voices_over;
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element->data.switch3.voices = element->data.switch3.voices_over = 0;
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element->data.switch3.pvoices = (snd_mixer_voice_t *)malloc(element->data.switch3.voices_size * sizeof(snd_mixer_voice_t));
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if (!element->data.switch3.pvoices)
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return -ENOMEM;
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_VOLUME1:
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element->data.volume1.range_size = element->data.volume1.range_over;
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element->data.volume1.range = element->data.volume1.range_over = 0;
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element->data.volume1.prange = (struct snd_mixer_element_volume1_range *)malloc(element->data.volume1.range_size * sizeof(struct snd_mixer_element_volume1_range));
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if (!element->data.volume1.prange)
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return -ENOMEM;
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_VOLUME2:
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element->data.volume2.svoices_size = element->data.volume2.svoices_over;
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element->data.volume2.svoices = element->data.volume2.svoices_over = 0;
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element->data.volume2.psvoices = (snd_mixer_voice_t *)malloc(element->data.volume2.svoices_size * sizeof(snd_mixer_voice_t));
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if (!element->data.volume2.psvoices)
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return -ENOMEM;
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element->data.volume2.range_size = element->data.volume2.range_over;
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element->data.volume2.range = element->data.volume2.range_over = 0;
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element->data.volume2.prange = (struct snd_mixer_element_volume2_range *)malloc(element->data.volume2.range_size * sizeof(struct snd_mixer_element_volume2_range));
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if (!element->data.volume1.prange) {
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safe_free((void **)&element->data.volume2.psvoices);
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return -ENOMEM;
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}
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_ACCU3:
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element->data.accu3.range_size = element->data.accu3.range_over;
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element->data.accu3.range = element->data.accu3.range_over = 0;
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element->data.accu3.prange = (struct snd_mixer_element_accu3_range *)malloc(element->data.accu3.range_size * sizeof(struct snd_mixer_element_accu3_range));
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if (!element->data.accu3.prange)
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return -ENOMEM;
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_PRE_EFFECT1:
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element->data.peffect1.items_size = element->data.peffect1.items_over;
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element->data.peffect1.items = element->data.peffect1.items_over = 0;
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element->data.peffect1.pitems = (struct snd_mixer_element_pre_effect1_info_item *)malloc(element->data.peffect1.items_size * sizeof(struct snd_mixer_element_pre_effect1_info_item));
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if (!element->data.peffect1.pitems)
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return -ENOMEM;
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element->data.peffect1.parameters_size = element->data.peffect1.parameters_over;
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element->data.peffect1.parameters = element->data.peffect1.parameters_over = 0;
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element->data.peffect1.pparameters = (struct snd_mixer_element_pre_effect1_info_parameter *)malloc(element->data.peffect1.parameters_size * sizeof(struct snd_mixer_element_pre_effect1_info_parameter));
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if (!element->data.peffect1.pparameters) {
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safe_free((void **)&element->data.peffect1.pitems);
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return -ENOMEM;
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}
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if ((err = snd_mixer_element_info(handle, element)) < 0)
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return err;
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break;
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}
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return 0;
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}
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int snd_mixer_element_info_free(snd_mixer_element_info_t *element)
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{
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if (!element)
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return -EINVAL;
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switch (element->eid.type) {
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case SND_MIXER_ETYPE_INPUT:
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case SND_MIXER_ETYPE_OUTPUT:
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safe_free((void **)&element->data.io.pvoices);
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break;
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case SND_MIXER_ETYPE_CAPTURE:
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case SND_MIXER_ETYPE_PLAYBACK:
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safe_free((void **)&element->data.pcm.pdevices);
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break;
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case SND_MIXER_ETYPE_SWITCH3:
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safe_free((void **)&element->data.switch3.pvoices);
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break;
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case SND_MIXER_ETYPE_VOLUME1:
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safe_free((void **)&element->data.volume1.prange);
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break;
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case SND_MIXER_ETYPE_VOLUME2:
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safe_free((void **)&element->data.volume2.psvoices);
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safe_free((void **)&element->data.volume1.prange);
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break;
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case SND_MIXER_ETYPE_ACCU3:
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safe_free((void **)&element->data.accu3.prange);
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break;
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case SND_MIXER_ETYPE_PRE_EFFECT1:
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safe_free((void **)&element->data.peffect1.pitems);
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safe_free((void **)&element->data.peffect1.pparameters);
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break;
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}
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return 0;
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}
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int snd_mixer_element_has_control(snd_mixer_eid_t *eid)
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{
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if (!eid)
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return -EINVAL;
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switch (eid->type) {
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case SND_MIXER_ETYPE_SWITCH1:
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case SND_MIXER_ETYPE_SWITCH2:
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case SND_MIXER_ETYPE_SWITCH3:
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case SND_MIXER_ETYPE_VOLUME1:
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case SND_MIXER_ETYPE_VOLUME2:
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case SND_MIXER_ETYPE_ACCU3:
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case SND_MIXER_ETYPE_MUX1:
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case SND_MIXER_ETYPE_MUX2:
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case SND_MIXER_ETYPE_TONE_CONTROL1:
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case SND_MIXER_ETYPE_3D_EFFECT1:
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case SND_MIXER_ETYPE_PRE_EFFECT1:
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return 1;
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}
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return 0;
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}
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int snd_mixer_element_build(void *handle, snd_mixer_element_t *element)
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{
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int err;
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if (!handle || !element)
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return -EINVAL;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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switch (element->eid.type) {
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case SND_MIXER_ETYPE_SWITCH1:
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element->data.switch1.sw_size = element->data.switch1.sw_over;
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element->data.switch1.sw = element->data.switch1.sw_over = 0;
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element->data.switch1.psw = (unsigned int *)malloc(((element->data.switch1.sw_size + 31) / 32) * sizeof(unsigned int));
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if (!element->data.switch1.psw)
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return -ENOMEM;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_SWITCH3:
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element->data.switch3.rsw_size = element->data.switch3.rsw_over;
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element->data.switch3.rsw = element->data.switch3.rsw_over = 0;
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element->data.switch3.prsw = (unsigned int *)malloc(((element->data.switch3.rsw_size + 31) / 32) * sizeof(unsigned int));
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if (!element->data.switch3.prsw)
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return -ENOMEM;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_VOLUME1:
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element->data.volume1.voices_size = element->data.volume1.voices_over;
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element->data.volume1.voices = element->data.volume1.voices_over = 0;
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element->data.volume1.pvoices = (int *)malloc(element->data.volume1.voices_size * sizeof(int));
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if (!element->data.volume1.pvoices)
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return -ENOMEM;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_VOLUME2:
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element->data.volume2.avoices_size = element->data.volume2.avoices_over;
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element->data.volume2.avoices = element->data.volume2.avoices_over = 0;
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element->data.volume2.pavoices = (int *)malloc(element->data.volume2.avoices_size * sizeof(int));
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if (!element->data.volume2.pavoices)
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return -ENOMEM;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_ACCU3:
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element->data.accu3.voices_size = element->data.accu3.voices_over;
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element->data.accu3.voices = element->data.accu3.voices_over = 0;
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element->data.accu3.pvoices = (int *)malloc(element->data.accu3.voices_size * sizeof(int));
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if (!element->data.accu3.pvoices)
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return -ENOMEM;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_MUX1:
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element->data.mux1.output_size = element->data.mux1.output_over;
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element->data.mux1.output = element->data.mux1.output_over = 0;
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element->data.mux1.poutput = (snd_mixer_eid_t *)malloc(element->data.mux1.output_size * sizeof(snd_mixer_eid_t));
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if (!element->data.mux1.poutput)
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return -ENOMEM;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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break;
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case SND_MIXER_ETYPE_PRE_EFFECT1:
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if (element->data.peffect1.item < 0) {
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element->data.peffect1.parameters_size = element->data.peffect1.parameters_over;
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element->data.peffect1.parameters = element->data.peffect1.parameters_over = 0;
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element->data.peffect1.pparameters = (int *)malloc(element->data.peffect1.parameters_size * sizeof(int));
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if (!element->data.peffect1.pparameters)
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return -ENOMEM;
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if ((err = snd_mixer_element_read(handle, element)) < 0)
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return err;
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}
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break;
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}
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return 0;
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}
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int snd_mixer_element_free(snd_mixer_element_t *element)
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{
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if (!element)
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return -EINVAL;
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switch (element->eid.type) {
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case SND_MIXER_ETYPE_SWITCH1:
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safe_free((void **)&element->data.switch1.psw);
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break;
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case SND_MIXER_ETYPE_SWITCH3:
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safe_free((void **)&element->data.switch3.prsw);
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break;
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case SND_MIXER_ETYPE_VOLUME1:
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safe_free((void **)&element->data.volume1.pvoices);
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break;
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case SND_MIXER_ETYPE_VOLUME2:
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safe_free((void **)&element->data.volume2.pavoices);
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break;
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case SND_MIXER_ETYPE_ACCU3:
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safe_free((void **)&element->data.accu3.pvoices);
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break;
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case SND_MIXER_ETYPE_MUX1:
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safe_free((void **)&element->data.mux1.poutput);
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break;
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case SND_MIXER_ETYPE_PRE_EFFECT1:
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if (element->data.peffect1.item < 0)
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safe_free((void **)&element->data.peffect1.pparameters);
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break;
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}
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return 0;
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}
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@ -29,7 +29,7 @@
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#include "asoundlib.h"
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#define SND_FILE_MIXER "/dev/snd/mixerC%iD%i"
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#define SND_MIXER_VERSION_MAX SND_PROTOCOL_VERSION( 1, 1, 0 )
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#define SND_MIXER_VERSION_MAX SND_PROTOCOL_VERSION(2, 0, 0)
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typedef struct {
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int card;
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@ -96,19 +96,6 @@ int snd_mixer_file_descriptor(void *handle)
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return mixer->fd;
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}
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int snd_mixer_channels(void *handle)
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{
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snd_mixer_t *mixer;
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int result;
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mixer = (snd_mixer_t *) handle;
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if (!mixer)
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return -EINVAL;
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if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNELS, &result) < 0)
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return -errno;
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return result;
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}
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int snd_mixer_info(void *handle, snd_mixer_info_t * info)
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{
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snd_mixer_t *mixer;
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@ -121,156 +108,87 @@ int snd_mixer_info(void *handle, snd_mixer_info_t * info)
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return 0;
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}
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int snd_mixer_exact_mode(void *handle, int enable)
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int snd_mixer_elements(void *handle, snd_mixer_elements_t * elements)
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{
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snd_mixer_t *mixer;
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mixer = (snd_mixer_t *) handle;
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if (!mixer)
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return -EINVAL;
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if (ioctl(mixer->fd, SND_MIXER_IOCTL_EXACT, &enable) < 0)
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if (ioctl(mixer->fd, SND_MIXER_IOCTL_ELEMENTS, elements) < 0)
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return -errno;
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return 0;
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}
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int snd_mixer_channel(void *handle, const char *channel_id)
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{
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snd_mixer_t *mixer;
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snd_mixer_channel_info_t info;
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int idx, channels, err;
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mixer = (snd_mixer_t *) handle;
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if (!mixer || !channel_id)
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return -EINVAL;
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/* bellow implementation isn't optimized for speed */
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/* info about channels should be cached in the snd_mixer_t structure */
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if ((channels = snd_mixer_channels(handle)) < 0)
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return channels;
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for (idx = 0; idx < channels; idx++) {
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if ((err = snd_mixer_channel_info(handle, idx, &info)) < 0)
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return err;
|
||||
if (!strncmp(channel_id, info.name, sizeof(info.name)))
|
||||
return idx;
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_info(void *handle, int channel, snd_mixer_channel_info_t * info)
|
||||
int snd_mixer_routes(void *handle, snd_mixer_routes_t * routes)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !info || channel < 0)
|
||||
if (!mixer)
|
||||
return -EINVAL;
|
||||
info->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_INFO, info) < 0)
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_ROUTES, routes) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_output_info(void *handle, int channel, snd_mixer_channel_direction_info_t * info)
|
||||
int snd_mixer_groups(void *handle, snd_mixer_groups_t * groups)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !info || channel < 0)
|
||||
if (!mixer)
|
||||
return -EINVAL;
|
||||
info->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_OINFO, info) < 0)
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_GROUPS, groups) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_input_info(void *handle, int channel, snd_mixer_channel_direction_info_t * info)
|
||||
int snd_mixer_group(void *handle, snd_mixer_group_t * group)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !info || channel < 0)
|
||||
if (!mixer)
|
||||
return -EINVAL;
|
||||
info->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_IINFO, info) < 0)
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_GROUP, group) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_read(void *handle, int channel, snd_mixer_channel_t * data)
|
||||
int snd_mixer_element_info(void *handle, snd_mixer_element_info_t * info)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !data || channel < 0)
|
||||
if (!mixer)
|
||||
return -EINVAL;
|
||||
bzero(data, sizeof(snd_mixer_channel_t));
|
||||
data->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_READ, data) < 0)
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_ELEMENT_INFO, info) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_write(void *handle, int channel, snd_mixer_channel_t * data)
|
||||
|
||||
int snd_mixer_element_read(void *handle, snd_mixer_element_t * element)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !data)
|
||||
if (!mixer)
|
||||
return -EINVAL;
|
||||
data->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_WRITE, data) < 0)
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_ELEMENT_READ, element) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_output_read(void *handle, int channel, snd_mixer_channel_direction_t * data)
|
||||
int snd_mixer_element_write(void *handle, snd_mixer_element_t * element)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !data || channel < 0)
|
||||
if (!mixer)
|
||||
return -EINVAL;
|
||||
bzero(data, sizeof(snd_mixer_channel_t));
|
||||
data->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_OREAD, data) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_output_write(void *handle, int channel, snd_mixer_channel_direction_t * data)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !data || channel < 0)
|
||||
return -EINVAL;
|
||||
data->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_OWRITE, data) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_input_read(void *handle, int channel, snd_mixer_channel_direction_t * data)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !data || channel < 0)
|
||||
return -EINVAL;
|
||||
bzero(data, sizeof(snd_mixer_channel_t));
|
||||
data->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_IREAD, data) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int snd_mixer_channel_input_write(void *handle, int channel, snd_mixer_channel_direction_t * data)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer || !data || channel < 0)
|
||||
return -EINVAL;
|
||||
data->channel = channel;
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_IWRITE, data) < 0)
|
||||
if (ioctl(mixer->fd, SND_MIXER_IOCTL_ELEMENT_WRITE, element) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -314,40 +232,60 @@ int snd_mixer_switch_write(void *handle, snd_switch_t * sw)
|
|||
int snd_mixer_read(void *handle, snd_mixer_callbacks_t * callbacks)
|
||||
{
|
||||
snd_mixer_t *mixer;
|
||||
int idx, result, count;
|
||||
unsigned int cmd, tmp;
|
||||
unsigned char buffer[64];
|
||||
int result, count;
|
||||
snd_mixer_read_t r;
|
||||
|
||||
mixer = (snd_mixer_t *) handle;
|
||||
if (!mixer)
|
||||
return -EINVAL;
|
||||
count = 0;
|
||||
while ((result = read(mixer->fd, &buffer, sizeof(buffer))) > 0) {
|
||||
if (result & 7)
|
||||
while ((result = read(mixer->fd, &r, sizeof(r))) > 0) {
|
||||
if (result != sizeof(r))
|
||||
return -EIO;
|
||||
if (!callbacks)
|
||||
continue;
|
||||
for (idx = 0; idx < result; idx += 8) {
|
||||
cmd = *(unsigned int *) &buffer[idx];
|
||||
tmp = *(unsigned int *) &buffer[idx + 4];
|
||||
if (cmd == SND_MIXER_CHANGED &&
|
||||
callbacks->channel_was_changed) {
|
||||
callbacks->channel_was_changed(callbacks->private_data, (int) tmp);
|
||||
}
|
||||
if (cmd == SND_MIXER_OUTPUT_CHANGED &&
|
||||
callbacks->output_channel_was_changed) {
|
||||
callbacks->output_channel_was_changed(callbacks->private_data, (int) tmp);
|
||||
}
|
||||
if (cmd == SND_MIXER_INPUT_CHANGED &&
|
||||
callbacks->input_channel_was_changed) {
|
||||
callbacks->input_channel_was_changed(callbacks->private_data, (int) tmp);
|
||||
}
|
||||
if (cmd == SND_MIXER_SWITCH_CHANGED &&
|
||||
callbacks->switch_was_changed) {
|
||||
callbacks->switch_was_changed(callbacks->private_data, (int) tmp);
|
||||
}
|
||||
switch (r.cmd) {
|
||||
case SND_MIXER_READ_REBUILD:
|
||||
if (callbacks->rebuild)
|
||||
callbacks->rebuild(callbacks->private_data);
|
||||
break;
|
||||
case SND_MIXER_READ_ELEMENT_VALUE:
|
||||
case SND_MIXER_READ_ELEMENT_CHANGE:
|
||||
case SND_MIXER_READ_ELEMENT_ROUTE:
|
||||
case SND_MIXER_READ_ELEMENT_ADD:
|
||||
case SND_MIXER_READ_ELEMENT_REMOVE:
|
||||
if (callbacks->element)
|
||||
callbacks->element(callbacks->private_data, r.cmd, &r.data.eid);
|
||||
break;
|
||||
case SND_MIXER_READ_GROUP_CHANGE:
|
||||
case SND_MIXER_READ_GROUP_ADD:
|
||||
case SND_MIXER_READ_GROUP_REMOVE:
|
||||
if (callbacks->group)
|
||||
callbacks->group(callbacks->private_data, r.cmd, &r.data.gid);
|
||||
break;
|
||||
case SND_MIXER_READ_SWITCH_VALUE:
|
||||
case SND_MIXER_READ_SWITCH_CHANGE:
|
||||
case SND_MIXER_READ_SWITCH_ADD:
|
||||
case SND_MIXER_READ_SWITCH_REMOVE:
|
||||
if (callbacks->xswitch)
|
||||
callbacks->xswitch(callbacks->private_data, r.cmd, &r.data.switem);
|
||||
break;
|
||||
}
|
||||
count += result >> 3; /* return only number of changes */
|
||||
count++;
|
||||
}
|
||||
return result >= 0 ? count : -errno;
|
||||
}
|
||||
|
||||
void snd_mixer_set_bit(unsigned int *bitmap, int bit, int val)
|
||||
{
|
||||
if (val) {
|
||||
bitmap[bit >> 5] |= 1 << (bit & 31);
|
||||
} else {
|
||||
bitmap[bit >> 5] &= ~(1 << (bit & 31));
|
||||
}
|
||||
}
|
||||
|
||||
int snd_mixer_get_bit(unsigned int *bitmap, int bit)
|
||||
{
|
||||
return (bitmap[bit >> 5] & (1 << (bit & 31))) ? 1 : 0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue