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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
|
/*************************************************************************/
/* audio_server.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef AUDIO_SERVER_H
#define AUDIO_SERVER_H
#include "variant.h"
#include "object.h"
class AudioMixer {
protected:
void audio_mixer_chunk_call(int p_frames);
public:
enum {
INVALID_CHANNEL=0xFFFFFFFF
};
typedef uint32_t ChannelID;
/* CHANNEL API */
enum FilterType {
FILTER_NONE,
FILTER_LOWPASS,
FILTER_BANDPASS,
FILTER_HIPASS,
FILTER_NOTCH,
FILTER_PEAK,
FILTER_BANDLIMIT, ///< cutoff is LP resonace is HP
FILTER_LOW_SHELF,
FILTER_HIGH_SHELF
};
enum ReverbRoomType {
REVERB_SMALL,
REVERB_MEDIUM,
REVERB_LARGE,
REVERB_HALL,
MAX_REVERBS
};
virtual ChannelID channel_alloc(RID p_sample)=0;
virtual void channel_set_volume(ChannelID p_channel, float p_gain)=0;
virtual void channel_set_pan(ChannelID p_channel, float p_pan, float p_depth=0,float height=0)=0; //pan and depth go from -1 to 1
virtual void channel_set_filter(ChannelID p_channel, FilterType p_type, float p_cutoff, float p_resonance, float p_gain=1.0)=0;
virtual void channel_set_chorus(ChannelID p_channel, float p_chorus )=0;
virtual void channel_set_reverb(ChannelID p_channel, ReverbRoomType p_room_type, float p_reverb)=0;
virtual void channel_set_mix_rate(ChannelID p_channel, int p_mix_rate)=0;
virtual void channel_set_positional(ChannelID p_channel, bool p_positional)=0;
virtual float channel_get_volume(ChannelID p_channel) const=0;
virtual float channel_get_pan(ChannelID p_channel) const=0; //pan and depth go from -1 to 1
virtual float channel_get_pan_depth(ChannelID p_channel) const=0; //pan and depth go from -1 to 1
virtual float channel_get_pan_height(ChannelID p_channel) const=0; //pan and depth go from -1 to 1
virtual FilterType channel_get_filter_type(ChannelID p_channel) const=0;
virtual float channel_get_filter_cutoff(ChannelID p_channel) const=0;
virtual float channel_get_filter_resonance(ChannelID p_channel) const=0;
virtual float channel_get_filter_gain(ChannelID p_channel) const=0;
virtual float channel_get_chorus(ChannelID p_channel) const=0;
virtual ReverbRoomType channel_get_reverb_type(ChannelID p_channel) const=0;
virtual float channel_get_reverb(ChannelID p_channel) const=0;
virtual int channel_get_mix_rate(ChannelID p_channel) const=0;
virtual bool channel_is_positional(ChannelID p_channel) const=0;
virtual bool channel_is_valid(ChannelID p_channel) const=0;
virtual void channel_free(ChannelID p_channel)=0;
virtual void set_mixer_volume(float p_volume)=0;
virtual ~AudioMixer() {}
};
class AudioServer : public Object {
OBJ_TYPE( AudioServer, Object );
static AudioServer *singleton;
protected:
friend class AudioStream;
friend class EventStream;
friend class AudioMixer;
virtual AudioMixer *get_mixer()=0;
virtual void audio_mixer_chunk_callback(int p_frames)=0;
static void _bind_methods();
public:
class EventStream {
protected:
AudioMixer *get_mixer() const;
public:
virtual void update(uint64_t p_usec)=0;
virtual ~EventStream() {}
};
class AudioStream {
public:
virtual int get_channel_count() const=0;
virtual void set_mix_rate(int p_rate)=0; //notify the stream of the mix rate
virtual bool mix(int32_t *p_buffer,int p_frames)=0;
virtual void update()=0;
virtual bool can_update_mt() const { return true; }
virtual ~AudioStream() {}
};
enum SampleFormat {
SAMPLE_FORMAT_PCM8,
SAMPLE_FORMAT_PCM16,
SAMPLE_FORMAT_IMA_ADPCM
};
enum SampleLoopFormat {
SAMPLE_LOOP_NONE,
SAMPLE_LOOP_FORWARD,
SAMPLE_LOOP_PING_PONG // not supported in every platform
};
/* SAMPLE API */
virtual RID sample_create(SampleFormat p_format, bool p_stereo, int p_length)=0;
virtual void sample_set_description(RID p_sample, const String& p_description)=0;
virtual String sample_get_description(RID p_sample) const=0;
virtual SampleFormat sample_get_format(RID p_sample) const=0;
virtual bool sample_is_stereo(RID p_sample) const=0;
virtual int sample_get_length(RID p_sample) const=0;
virtual const void* sample_get_data_ptr(RID p_sample) const=0;
virtual void sample_set_signed_data(RID p_sample, const DVector<float>& p_buffer);
virtual void sample_set_data(RID p_sample, const DVector<uint8_t>& p_buffer)=0;
virtual DVector<uint8_t> sample_get_data(RID p_sample) const=0;
virtual void sample_set_mix_rate(RID p_sample,int p_rate)=0;
virtual int sample_get_mix_rate(RID p_sample) const=0;
virtual void sample_set_loop_format(RID p_sample,SampleLoopFormat p_format)=0;
virtual SampleLoopFormat sample_get_loop_format(RID p_sample) const=0;
virtual void sample_set_loop_begin(RID p_sample,int p_pos)=0;
virtual int sample_get_loop_begin(RID p_sample) const=0;
virtual void sample_set_loop_end(RID p_sample,int p_pos)=0;
virtual int sample_get_loop_end(RID p_sample) const=0;
/* VOICE API */
enum FilterType {
FILTER_NONE,
FILTER_LOWPASS,
FILTER_BANDPASS,
FILTER_HIPASS,
FILTER_NOTCH,
FILTER_PEAK,
FILTER_BANDLIMIT, ///< cutoff is LP resonace is HP
FILTER_LOW_SHELF,
FILTER_HIGH_SHELF
};
enum ReverbRoomType {
REVERB_SMALL,
REVERB_MEDIUM,
REVERB_LARGE,
REVERB_HALL
};
virtual RID voice_create()=0;
virtual void voice_play(RID p_voice, RID p_sample)=0;
virtual void voice_set_volume(RID p_voice, float p_volume)=0;
virtual void voice_set_pan(RID p_voice, float p_pan, float p_depth=0,float height=0)=0; //pan and depth go from -1 to 1
virtual void voice_set_filter(RID p_voice, FilterType p_type, float p_cutoff, float p_resonance, float p_gain=0)=0;
virtual void voice_set_chorus(RID p_voice, float p_chorus )=0;
virtual void voice_set_reverb(RID p_voice, ReverbRoomType p_room_type, float p_reverb)=0;
virtual void voice_set_mix_rate(RID p_voice, int p_mix_rate)=0;
virtual void voice_set_positional(RID p_voice, bool p_positional)=0;
virtual float voice_get_volume(RID p_voice) const=0;
virtual float voice_get_pan(RID p_voice) const=0; //pan and depth go from -1 to 1
virtual float voice_get_pan_depth(RID p_voice) const=0; //pan and depth go from -1 to 1
virtual float voice_get_pan_height(RID p_voice) const=0; //pan and depth go from -1 to 1
virtual FilterType voice_get_filter_type(RID p_voice) const=0;
virtual float voice_get_filter_cutoff(RID p_voice) const=0;
virtual float voice_get_filter_resonance(RID p_voice) const=0;
virtual float voice_get_chorus(RID p_voice) const=0;
virtual ReverbRoomType voice_get_reverb_type(RID p_voice) const=0;
virtual float voice_get_reverb(RID p_voice) const=0;
virtual int voice_get_mix_rate(RID p_voice) const=0;
virtual bool voice_is_positional(RID p_voice) const=0;
virtual void voice_stop(RID p_voice)=0;
virtual bool voice_is_active(RID p_voice) const=0;
/* STREAM API */
virtual RID audio_stream_create(AudioStream *p_stream)=0;
virtual RID event_stream_create(EventStream *p_stream)=0;
virtual void stream_set_active(RID p_stream, bool p_active)=0;
virtual bool stream_is_active(RID p_stream) const=0;
virtual void stream_set_volume_scale(RID p_stream, float p_scale)=0;
virtual float stream_set_volume_scale(RID p_stream) const=0;
/* Audio Physics API */
virtual void free(RID p_id)=0;
virtual void init()=0;
virtual void finish()=0;
virtual void update()=0;
/* MISC config */
virtual void lock()=0;
virtual void unlock()=0;
virtual int get_default_channel_count() const=0;
virtual int get_default_mix_rate() const=0;
virtual void set_stream_global_volume_scale(float p_volume)=0;
virtual void set_fx_global_volume_scale(float p_volume)=0;
virtual void set_event_voice_global_volume_scale(float p_volume)=0;
virtual float get_stream_global_volume_scale() const=0;
virtual float get_fx_global_volume_scale() const=0;
virtual float get_event_voice_global_volume_scale() const=0;
virtual uint32_t read_output_peak() const=0;
static AudioServer *get_singleton();
virtual double get_mix_time() const=0; //useful for video -> audio sync
virtual double get_output_delay() const=0;
AudioServer();
virtual ~AudioServer();
};
VARIANT_ENUM_CAST( AudioServer::SampleFormat );
VARIANT_ENUM_CAST( AudioServer::SampleLoopFormat );
VARIANT_ENUM_CAST( AudioServer::FilterType );
VARIANT_ENUM_CAST( AudioServer::ReverbRoomType );
typedef AudioServer AS;
#endif // AUDIO_SERVER_H
|