078c34e951
* Track mute state, only call hw if actual change is needed * Don't unmute in audiohw_postinit() * sample rate tracking fixes * erosq: Don't start up muted Change-Id: I004f787a4b7ea73c16b6ec9818ec29a12c89f46b
187 lines
4 KiB
C
187 lines
4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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*
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* Copyright (c) 2018 Marcin Bukat
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* Copyright (c) 2020 Solomon Peachy
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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//#define LOGF_ENABLE
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#include "config.h"
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#include "audio.h"
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#include "audiohw.h"
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#include "button.h"
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#include "system.h"
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#include "kernel.h"
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#include "panic.h"
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#include "sysfs.h"
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#include "alsa-controls.h"
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#include "pcm-alsa.h"
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#include "pcm_sw_volume.h"
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#include "logf.h"
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static int fd_hw;
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static int inited = 0;
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static long int vol_l_hw = 255;
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static long int vol_r_hw = 255;
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static long int last_ps = -1;
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static void hw_open(void)
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{
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fd_hw = open("/dev/snd/controlC0", O_RDWR);
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if(fd_hw < 0)
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panicf("Cannot open '/dev/snd/controlC0'");
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}
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static void hw_close(void)
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{
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close(fd_hw);
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}
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static int muted = -1;
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void audiohw_mute(int mute)
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{
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logf("mute %d", mute);
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if (muted == mute)
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return;
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muted = mute;
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if(mute)
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{
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long int ps0 = 0;
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alsa_controls_set_ints("Output Port Switch", 1, &ps0);
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}
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else
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{
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erosq_get_outputs();
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}
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}
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int erosq_get_outputs(void) {
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long int ps = 0; // Muted, if nothing is plugged in!
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int status = 0;
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if (!inited) return ps;
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const char * const sysfs_lo_switch = "/sys/class/switch/lineout/state";
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const char * const sysfs_hs_switch = "/sys/class/switch/headset/state";
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sysfs_get_int(sysfs_lo_switch, &status);
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if (status) ps = 1; // lineout
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sysfs_get_int(sysfs_hs_switch, &status);
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if (status) ps = 2; // headset
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erosq_set_output(ps);
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return ps;
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}
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void erosq_set_output(int ps)
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{
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if (!inited || muted) return;
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if (last_ps != ps)
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{
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logf("set out %d/%d", ps, last_ps);
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/* Output port switch */
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last_ps = ps;
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alsa_controls_set_ints("Output Port Switch", 1, &last_ps);
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audiohw_set_volume(vol_l_hw, vol_r_hw);
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}
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}
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void audiohw_preinit(void)
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{
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logf("hw preinit");
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alsa_controls_init();
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hw_open();
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// audiohw_mute(true); /* Start muted to avoid the POP */
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audiohw_mute(false);
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inited = 1;
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}
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void audiohw_postinit(void)
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{
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logf("hw postinit");
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}
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void audiohw_close(void)
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{
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logf("hw close");
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inited = 0;
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hw_close();
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alsa_controls_close();
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}
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void audiohw_set_frequency(int fsel)
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{
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(void)fsel;
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}
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void audiohw_set_volume(int vol_l, int vol_r)
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{
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logf("hw vol %d %d", vol_l, vol_r);
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long l,r;
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vol_l_hw = vol_l;
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vol_r_hw = vol_r;
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if (lineout_inserted()) {
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l = 0;
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r = 0;
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} else {
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l = vol_l_hw;
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r = vol_r_hw;
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}
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/* SW volume for <= 1.0 gain, HW at unity, < -740 == MUTE */
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int sw_volume_l = l <= -740 ? PCM_MUTE_LEVEL : MIN(l, 0);
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int sw_volume_r = r <= -740 ? PCM_MUTE_LEVEL : MIN(r, 0);
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pcm_set_master_volume(sw_volume_l, sw_volume_r);
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}
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void audiohw_set_lineout_volume(int vol_l, int vol_r)
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{
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long l,r;
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logf("lo vol %d %d", vol_l, vol_r);
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(void)vol_l;
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(void)vol_r;
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if (lineout_inserted()) {
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l = 0;
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r = 0;
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} else {
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l = vol_l_hw;
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r = vol_r_hw;
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}
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int sw_volume_l = l <= -740 ? PCM_MUTE_LEVEL : MIN(l, 0);
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int sw_volume_r = r <= -740 ? PCM_MUTE_LEVEL : MIN(r, 0);
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pcm_set_master_volume(sw_volume_l, sw_volume_r);
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}
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