mirror of https://github.com/mpv-player/mpv
254 lines
7.5 KiB
C
254 lines
7.5 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <string.h>
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#ifndef __MINGW32__
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#include <sys/ioctl.h>
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#endif
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "config.h"
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#include "libao2/audio_out.h"
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#include "libaf/af.h"
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#include "mixer.h"
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char *mixer_device = NULL;
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char *mixer_channel = NULL;
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int soft_vol = 0;
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float soft_vol_max = 110.0;
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// Called after the audio filter chain is built or rebuilt.
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void mixer_reinit(mixer_t *mixer)
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{
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if (!mixer->ao)
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return;
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if (mixer->restore_volume) {
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int muted = mixer->muted;
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mixer_setvolume(mixer, mixer->restore_vol_l, mixer->restore_vol_r);
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mixer->muted = muted;
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}
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if (mixer->muted) {
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// undo mixer_uninit()
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mixer_setvolume(mixer, 0, 0);
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mixer->muted = true;
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}
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if (mixer->restore_balance) {
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mixer_setbalance(mixer, mixer->balance);
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}
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}
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// Called before the audio output is uninitialized.
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// Note that this doesn't necessarily terminate the mixer_t instance, and it's
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// possible that mixer_reinit() will be called later.
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void mixer_uninit(mixer_t *mixer)
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{
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if (!mixer->ao)
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return;
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// The player is supposed to turn off the mute state when the player
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// terminates. No other attempts at restoring the volume are done.
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// One complication is that the mute state should survive audio
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// reinitialization (e.g. when switching to a new file), so we have to be
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// sure mixer_reinit() will restore the mute state.
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if (mixer->muted) {
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// avoid playing the rest of the audio buffer at restored volume
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ao_reset(mixer->ao);
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mixer_setmuted(mixer, false);
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mixer->muted = true;
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}
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}
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void mixer_getvolume(mixer_t *mixer, float *l, float *r)
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{
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ao_control_vol_t vol;
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*l = 0;
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*r = 0;
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if (mixer->ao) {
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if (soft_vol ||
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CONTROL_OK != ao_control(mixer->ao, AOCONTROL_GET_VOLUME, &vol))
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{
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if (!mixer->afilter)
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return;
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float db_vals[AF_NCH];
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if (!af_control_any_rev(mixer->afilter,
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AF_CONTROL_VOLUME_LEVEL | AF_CONTROL_GET, db_vals))
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{
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db_vals[0] = db_vals[1] = 1.0;
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} else {
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af_from_dB(2, db_vals, db_vals, 20.0, -200.0, 60.0);
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}
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vol.left = (db_vals[0] / (soft_vol_max / 100.0)) * 100.0;
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vol.right = (db_vals[1] / (soft_vol_max / 100.0)) * 100.0;
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}
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*r = vol.right;
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*l = vol.left;
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}
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}
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void mixer_setvolume(mixer_t *mixer, float l, float r)
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{
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ao_control_vol_t vol;
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vol.right = r;
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vol.left = l;
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if (mixer->ao) {
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bool use_softvol = soft_vol;
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if (!use_softvol) {
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if (CONTROL_OK != ao_control(mixer->ao, AOCONTROL_SET_VOLUME, &vol))
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{
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use_softvol = true;
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} else {
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mixer->restore_volume = mixer->ao->no_persistent_volume;
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}
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}
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if (use_softvol) {
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if (!mixer->afilter)
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return;
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// af_volume uses values in dB
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float db_vals[AF_NCH];
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int i;
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db_vals[0] = (l / 100.0) * (soft_vol_max / 100.0);
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db_vals[1] = (r / 100.0) * (soft_vol_max / 100.0);
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for (i = 2; i < AF_NCH; i++)
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db_vals[i] = ((l + r) / 100.0) * (soft_vol_max / 100.0) / 2.0;
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af_to_dB(AF_NCH, db_vals, db_vals, 20.0);
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if (!af_control_any_rev(mixer->afilter,
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AF_CONTROL_VOLUME_LEVEL | AF_CONTROL_SET, db_vals))
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{
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mp_tmsg(MSGT_GLOBAL, MSGL_INFO,
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"[Mixer] No hardware mixing, inserting volume filter.\n");
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if (!(af_add(mixer->afilter, "volume")
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&& af_control_any_rev(mixer->afilter,
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AF_CONTROL_VOLUME_LEVEL | AF_CONTROL_SET, db_vals)))
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{
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mp_tmsg(MSGT_GLOBAL, MSGL_ERR,
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"[Mixer] No volume control available.\n");
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return;
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}
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}
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mixer->restore_volume = true;
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}
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if (mixer->restore_volume) {
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mixer->restore_vol_l = l;
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mixer->restore_vol_r = r;
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}
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}
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mixer->muted = false;
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}
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void mixer_incvolume(mixer_t *mixer)
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{
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float mixer_l, mixer_r;
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mixer_getvolume(mixer, &mixer_l, &mixer_r);
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mixer_l += mixer->volstep;
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if (mixer_l > 100)
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mixer_l = 100;
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mixer_r += mixer->volstep;
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if (mixer_r > 100)
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mixer_r = 100;
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mixer_setvolume(mixer, mixer_l, mixer_r);
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}
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void mixer_decvolume(mixer_t *mixer)
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{
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float mixer_l, mixer_r;
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mixer_getvolume(mixer, &mixer_l, &mixer_r);
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mixer_l -= mixer->volstep;
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if (mixer_l < 0)
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mixer_l = 0;
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mixer_r -= mixer->volstep;
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if (mixer_r < 0)
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mixer_r = 0;
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mixer_setvolume(mixer, mixer_l, mixer_r);
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}
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void mixer_getbothvolume(mixer_t *mixer, float *b)
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{
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float mixer_l, mixer_r;
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mixer_getvolume(mixer, &mixer_l, &mixer_r);
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*b = (mixer_l + mixer_r) / 2;
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}
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void mixer_mute(mixer_t *mixer)
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{
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mixer_setmuted(mixer, !mixer->muted);
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}
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void mixer_setmuted(mixer_t *mixer, bool mute)
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{
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if (mute == mixer->muted)
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return;
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if (mixer->muted) {
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mixer_setvolume(mixer, mixer->last_l, mixer->last_r);
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} else {
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mixer_getvolume(mixer, &mixer->last_l, &mixer->last_r);
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mixer_setvolume(mixer, 0, 0);
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mixer->muted = true;
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}
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}
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void mixer_getbalance(mixer_t *mixer, float *val)
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{
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*val = 0.f;
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if (!mixer->afilter)
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return;
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af_control_any_rev(mixer->afilter, AF_CONTROL_PAN_BALANCE | AF_CONTROL_GET,
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val);
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}
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void mixer_setbalance(mixer_t *mixer, float val)
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{
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float level[AF_NCH];
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int i;
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af_control_ext_t arg_ext = { .arg = level };
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af_instance_t *af_pan_balance;
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if (!mixer->afilter)
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return;
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mixer->balance = val;
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mixer->restore_balance = true;
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if (af_control_any_rev(mixer->afilter,
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AF_CONTROL_PAN_BALANCE | AF_CONTROL_SET, &val))
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return;
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if (!(af_pan_balance = af_add(mixer->afilter, "pan"))) {
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mp_tmsg(MSGT_GLOBAL, MSGL_ERR,
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"[Mixer] No balance control available.\n");
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mixer->restore_balance = false;
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return;
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}
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af_init(mixer->afilter);
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/* make all other channels pass thru since by default pan blocks all */
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memset(level, 0, sizeof(level));
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for (i = 2; i < AF_NCH; i++) {
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arg_ext.ch = i;
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level[i] = 1.f;
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af_pan_balance->control(af_pan_balance,
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AF_CONTROL_PAN_LEVEL | AF_CONTROL_SET,
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&arg_ext);
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level[i] = 0.f;
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}
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af_pan_balance->control(af_pan_balance,
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AF_CONTROL_PAN_BALANCE | AF_CONTROL_SET, &val);
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}
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