summaryrefslogtreecommitdiffstats
path: root/audio/out/ao.h
blob: 4a7c928824d2ce3612567a66f98aa4b839e3493d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 * This file is part of MPlayer.
 *
 * MPlayer is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MPlayer 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef MPLAYER_AUDIO_OUT_H
#define MPLAYER_AUDIO_OUT_H

#include <stdbool.h>

#include "core/bstr.h"
#include "core/mp_common.h"

enum aocontrol {
    // _VOLUME commands take struct ao_control_vol pointer for input/output.
    // If there's only one volume, SET should use average of left/right.
    AOCONTROL_GET_VOLUME,
    AOCONTROL_SET_VOLUME,
    // _MUTE commands take a pointer to bool
    AOCONTROL_GET_MUTE,
    AOCONTROL_SET_MUTE,
};

#define AOPLAY_FINAL_CHUNK 1

typedef struct ao_control_vol {
    float left;
    float right;
} ao_control_vol_t;

typedef struct ao_info {
    /* driver name ("Matrox Millennium G200/G400" */
    const char *name;
    /* short name (for config strings) ("mga") */
    const char *short_name;
    /* author ("Aaron Holtzman <aholtzma@ess.engr.uvic.ca>") */
    const char *author;
    /* any additional comments */
    const char *comment;
} ao_info_t;

/* interface towards mplayer and */
typedef struct ao_old_functions {
    int (*control)(int cmd, void *arg);
    int (*init)(int rate, int channels, int format, int flags);
    void (*uninit)(int immed);
    void (*reset)(void);
    int (*get_space)(void);
    int (*play)(void *data, int len, int flags);
    float (*get_delay)(void);
    void (*pause)(void);
    void (*resume)(void);
} ao_functions_t;

struct ao;

struct ao_driver {
    bool is_new;
    bool encode;
    const struct ao_info *info;
    const struct ao_old_functions *old_functions;
    int (*control)(struct ao *ao, enum aocontrol cmd, void *arg);
    int (*init)(struct ao *ao, char *params);
    void (*uninit)(struct ao *ao, bool cut_audio);
    void (*reset)(struct ao*ao);
    int (*get_space)(struct ao *ao);
    int (*play)(struct ao *ao, void *data, int len, int flags);
    float (*get_delay)(struct ao *ao);
    void (*pause)(struct ao *ao);
    void (*resume)(struct ao *ao);
};

/* global data used by mplayer and plugins */
struct ao {
    int samplerate;
    int channels;
    int format;
    int bps;
    int outburst;
    int buffersize;
    double pts;
    struct bstr buffer;
    int buffer_playable_size;
    bool probing;
    bool initialized;
    bool untimed;
    bool no_persistent_volume;  // the AO does the equivalent of af_volume
    bool per_application_mixer; // like above, but volume persists (per app)
    const struct ao_driver *driver;
    void *priv;
    struct encode_lavc_context *encode_lavc_ctx;
    struct MPOpts *opts;
    struct input_ctx *input_ctx;
};

extern char *ao_subdevice;

void list_audio_out(void);

struct ao *ao_create(struct MPOpts *opts, struct input_ctx *input);
void ao_init(struct ao *ao, char **ao_list);
void ao_uninit(struct ao *ao, bool cut_audio);
int ao_play(struct ao *ao, void *data, int len, int flags);
int ao_control(struct ao *ao, enum aocontrol cmd, void *arg);
double ao_get_delay(struct ao *ao);
int ao_get_space(struct ao *ao);
void ao_reset(struct ao *ao);
void ao_pause(struct ao *ao);
void ao_resume(struct ao *ao);

int old_ao_control(struct ao *ao, enum aocontrol cmd, void *arg);
int old_ao_init(struct ao *ao, char *params);
void old_ao_uninit(struct ao *ao, bool cut_audio);
void old_ao_reset(struct ao*ao);
int old_ao_get_space(struct ao *ao);
int old_ao_play(struct ao *ao, void *data, int len, int flags);
float old_ao_get_delay(struct ao *ao);
void old_ao_pause(struct ao *ao);
void old_ao_resume(struct ao *ao);

#endif /* MPLAYER_AUDIO_OUT_H */