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https://github.com/mpv-player/mpv
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06b1de2687
The mixer frontend code can now make use of a proper system mixer mute toggle, if the audio output driver supports it. The consequence is that, if support is available, mplayer will no longer temporarily set the system volume to 0 if mute is enabled. Generally, the code now deals with the following combinations of available AO features: - software volume control forced by user (--softvol / soft_vol flag) => if enabled, never touch the "hardware" controls - "hardware"/driver volume control available (whether AOCONTROL_GET/SET_VOLUME works) => if not available, enable volume controls by enabling softvol - "hardware"/driver mute control (AOCONTROL_GET/SET_MUTE) => if not available, emulate by setting volume to 0 - whether the volume+mute controls are kept or not when the AO is closed (indicated by ao->no_persistent_volume) => if not persistent, restore the volume/mute next time the AO is opened
143 lines
4.2 KiB
C
143 lines
4.2 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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#ifndef MPLAYER_AUDIO_OUT_H
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#define MPLAYER_AUDIO_OUT_H
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#include <stdbool.h>
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#include "bstr.h"
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typedef struct ao_info {
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/* driver name ("Matrox Millennium G200/G400" */
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const char *name;
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/* short name (for config strings) ("mga") */
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const char *short_name;
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/* author ("Aaron Holtzman <aholtzma@ess.engr.uvic.ca>") */
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const char *author;
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/* any additional comments */
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const char *comment;
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} ao_info_t;
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/* interface towards mplayer and */
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typedef struct ao_old_functions {
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int (*control)(int cmd, void *arg);
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int (*init)(int rate, int channels, int format, int flags);
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void (*uninit)(int immed);
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void (*reset)(void);
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int (*get_space)(void);
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int (*play)(void *data, int len, int flags);
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float (*get_delay)(void);
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void (*pause)(void);
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void (*resume)(void);
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} ao_functions_t;
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struct ao;
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struct ao_driver {
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bool is_new;
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const struct ao_info *info;
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const struct ao_old_functions *old_functions;
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int (*control)(struct ao *ao, int cmd, void *arg);
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int (*init)(struct ao *ao, char *params);
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void (*uninit)(struct ao *ao, bool cut_audio);
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void (*reset)(struct ao*ao);
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int (*get_space)(struct ao *ao);
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int (*play)(struct ao *ao, void *data, int len, int flags);
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float (*get_delay)(struct ao *ao);
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void (*pause)(struct ao *ao);
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void (*resume)(struct ao *ao);
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};
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/* global data used by mplayer and plugins */
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struct ao {
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int samplerate;
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int channels;
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int format;
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int bps;
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int outburst;
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int buffersize;
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int brokenpts;
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double pts;
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struct bstr buffer;
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int buffer_playable_size;
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bool initialized;
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bool untimed;
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bool no_persistent_volume;
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const struct ao_driver *driver;
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void *priv;
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};
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extern char *ao_subdevice;
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void list_audio_out(void);
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#define CONTROL_OK 1
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#define CONTROL_TRUE 1
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#define CONTROL_FALSE 0
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#define CONTROL_UNKNOWN -1
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#define CONTROL_ERROR -2
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#define CONTROL_NA -3
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#define AOCONTROL_SET_DEVICE 1
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#define AOCONTROL_GET_DEVICE 2
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#define AOCONTROL_QUERY_FORMAT 3 /* test for availabilty of a format */
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// Uses ao_control_vol_t* as arg.
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// If the volume controls are joint, the average of both volumes should be used.
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#define AOCONTROL_GET_VOLUME 4
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#define AOCONTROL_SET_VOLUME 5
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// Uses ao_control_vol_t* as arg.
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// left==0.0f means muted, left==1.0f means not muted (right likewise)
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// Other values between are invalid.
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// If the mtue controls are joint, the output should be muted if either of the
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// two channels are muted.
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#define AOCONTROL_GET_MUTE 6
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#define AOCONTROL_SET_MUTE 7
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#define AOCONTROL_SET_PLUGIN_DRIVER 8
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#define AOCONTROL_SET_PLUGIN_LIST 9
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#define AOPLAY_FINAL_CHUNK 1
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typedef struct ao_control_vol {
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float left;
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float right;
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} ao_control_vol_t;
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struct ao *ao_create(void);
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void ao_init(struct ao *ao, char **ao_list);
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void ao_uninit(struct ao *ao, bool cut_audio);
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int ao_play(struct ao *ao, void *data, int len, int flags);
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int ao_control(struct ao *ao, int cmd, void *arg);
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double ao_get_delay(struct ao *ao);
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int ao_get_space(struct ao *ao);
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void ao_reset(struct ao *ao);
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void ao_pause(struct ao *ao);
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void ao_resume(struct ao *ao);
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int old_ao_control(struct ao *ao, int cmd, void *arg);
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int old_ao_init(struct ao *ao, char *params);
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void old_ao_uninit(struct ao *ao, bool cut_audio);
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void old_ao_reset(struct ao*ao);
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int old_ao_get_space(struct ao *ao);
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int old_ao_play(struct ao *ao, void *data, int len, int flags);
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float old_ao_get_delay(struct ao *ao);
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void old_ao_pause(struct ao *ao);
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void old_ao_resume(struct ao *ao);
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#endif /* MPLAYER_AUDIO_OUT_H */
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