2 * Copyright (C) 2011 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #ifndef ANDROID_AUDIO_CORE_H
19 #define ANDROID_AUDIO_CORE_H
23 #include <sys/cdefs.h>
24 #include <sys/types.h>
26 #include <cutils/bitops.h>
30 /* The enums were moved here mostly from
31 * frameworks/base/include/media/AudioSystem.h
34 typedef int audio_io_handle_t
;
36 /* Audio stream types */
38 AUDIO_STREAM_DEFAULT
= -1,
39 AUDIO_STREAM_VOICE_CALL
= 0,
40 AUDIO_STREAM_SYSTEM
= 1,
41 AUDIO_STREAM_RING
= 2,
42 AUDIO_STREAM_MUSIC
= 3,
43 AUDIO_STREAM_ALARM
= 4,
44 AUDIO_STREAM_NOTIFICATION
= 5,
45 AUDIO_STREAM_BLUETOOTH_SCO
= 6,
46 AUDIO_STREAM_ENFORCED_AUDIBLE
= 7, /* Sounds that cannot be muted by user and must be routed to speaker */
47 AUDIO_STREAM_DTMF
= 8,
51 AUDIO_STREAM_MAX
= AUDIO_STREAM_CNT
- 1,
52 } audio_stream_type_t
;
54 /* Do not change these values without updating their counterparts
55 * in media/java/android/media/MediaRecorder.java!
58 AUDIO_SOURCE_DEFAULT
= 0,
60 AUDIO_SOURCE_VOICE_UPLINK
= 2,
61 AUDIO_SOURCE_VOICE_DOWNLINK
= 3,
62 AUDIO_SOURCE_VOICE_CALL
= 4,
63 AUDIO_SOURCE_CAMCORDER
= 5,
64 AUDIO_SOURCE_VOICE_RECOGNITION
= 6,
65 AUDIO_SOURCE_VOICE_COMMUNICATION
= 7,
66 AUDIO_SOURCE_REMOTE_SUBMIX
= 8, /* Source for the mix to be presented remotely. */
67 /* An example of remote presentation is Wifi Display */
68 /* where a dongle attached to a TV can be used to */
69 /* play the mix captured by this audio source. */
71 AUDIO_SOURCE_MAX
= AUDIO_SOURCE_CNT
- 1,
74 /* special audio session values
75 * (XXX: should this be living in the audio effects land?)
78 /* session for effects attached to a particular output stream
79 * (value must be less than 0)
81 AUDIO_SESSION_OUTPUT_STAGE
= -1,
83 /* session for effects applied to output mix. These effects can
84 * be moved by audio policy manager to another output stream
87 AUDIO_SESSION_OUTPUT_MIX
= 0,
90 /* Audio sub formats (see enum audio_format). */
94 AUDIO_FORMAT_PCM_SUB_16_BIT
= 0x1, /* DO NOT CHANGE - PCM signed 16 bits */
95 AUDIO_FORMAT_PCM_SUB_8_BIT
= 0x2, /* DO NOT CHANGE - PCM unsigned 8 bits */
96 AUDIO_FORMAT_PCM_SUB_32_BIT
= 0x3, /* PCM signed .31 fixed point */
97 AUDIO_FORMAT_PCM_SUB_8_24_BIT
= 0x4, /* PCM signed 7.24 fixed point */
98 } audio_format_pcm_sub_fmt_t
;
100 /* MP3 sub format field definition : can use 11 LSBs in the same way as MP3
101 * frame header to specify bit rate, stereo mode, version...
104 AUDIO_FORMAT_MP3_SUB_NONE
= 0x0,
105 } audio_format_mp3_sub_fmt_t
;
107 /* AMR NB/WB sub format field definition: specify frame block interleaving,
108 * bandwidth efficient or octet aligned, encoding mode for recording...
111 AUDIO_FORMAT_AMR_SUB_NONE
= 0x0,
112 } audio_format_amr_sub_fmt_t
;
114 /* AAC sub format field definition: specify profile or bitrate for recording... */
116 AUDIO_FORMAT_AAC_SUB_NONE
= 0x0,
117 } audio_format_aac_sub_fmt_t
;
119 /* VORBIS sub format field definition: specify quality for recording... */
121 AUDIO_FORMAT_VORBIS_SUB_NONE
= 0x0,
122 } audio_format_vorbis_sub_fmt_t
;
124 /* Audio format consists in a main format field (upper 8 bits) and a sub format
125 * field (lower 24 bits).
127 * The main format indicates the main codec type. The sub format field
128 * indicates options and parameters for each format. The sub format is mainly
129 * used for record to indicate for instance the requested bitrate or profile.
130 * It can also be used for certain formats to give informations not present in
131 * the encoded audio stream (e.g. octet alignement for AMR).
134 AUDIO_FORMAT_INVALID
= 0xFFFFFFFFUL
,
135 AUDIO_FORMAT_DEFAULT
= 0,
136 AUDIO_FORMAT_PCM
= 0x00000000UL
, /* DO NOT CHANGE */
137 AUDIO_FORMAT_MP3
= 0x01000000UL
,
138 AUDIO_FORMAT_AMR_NB
= 0x02000000UL
,
139 AUDIO_FORMAT_AMR_WB
= 0x03000000UL
,
140 AUDIO_FORMAT_AAC
= 0x04000000UL
,
141 AUDIO_FORMAT_HE_AAC_V1
= 0x05000000UL
,
142 AUDIO_FORMAT_HE_AAC_V2
= 0x06000000UL
,
143 AUDIO_FORMAT_VORBIS
= 0x07000000UL
,
144 AUDIO_FORMAT_MAIN_MASK
= 0xFF000000UL
,
145 AUDIO_FORMAT_SUB_MASK
= 0x00FFFFFFUL
,
148 AUDIO_FORMAT_PCM_16_BIT
= (AUDIO_FORMAT_PCM
|
149 AUDIO_FORMAT_PCM_SUB_16_BIT
),
150 AUDIO_FORMAT_PCM_8_BIT
= (AUDIO_FORMAT_PCM
|
151 AUDIO_FORMAT_PCM_SUB_8_BIT
),
152 AUDIO_FORMAT_PCM_32_BIT
= (AUDIO_FORMAT_PCM
|
153 AUDIO_FORMAT_PCM_SUB_32_BIT
),
154 AUDIO_FORMAT_PCM_8_24_BIT
= (AUDIO_FORMAT_PCM
|
155 AUDIO_FORMAT_PCM_SUB_8_24_BIT
),
159 /* output channels */
160 AUDIO_CHANNEL_OUT_FRONT_LEFT
= 0x1,
161 AUDIO_CHANNEL_OUT_FRONT_RIGHT
= 0x2,
162 AUDIO_CHANNEL_OUT_FRONT_CENTER
= 0x4,
163 AUDIO_CHANNEL_OUT_LOW_FREQUENCY
= 0x8,
164 AUDIO_CHANNEL_OUT_BACK_LEFT
= 0x10,
165 AUDIO_CHANNEL_OUT_BACK_RIGHT
= 0x20,
166 AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER
= 0x40,
167 AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER
= 0x80,
168 AUDIO_CHANNEL_OUT_BACK_CENTER
= 0x100,
169 AUDIO_CHANNEL_OUT_SIDE_LEFT
= 0x200,
170 AUDIO_CHANNEL_OUT_SIDE_RIGHT
= 0x400,
171 AUDIO_CHANNEL_OUT_TOP_CENTER
= 0x800,
172 AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT
= 0x1000,
173 AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER
= 0x2000,
174 AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT
= 0x4000,
175 AUDIO_CHANNEL_OUT_TOP_BACK_LEFT
= 0x8000,
176 AUDIO_CHANNEL_OUT_TOP_BACK_CENTER
= 0x10000,
177 AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT
= 0x20000,
179 AUDIO_CHANNEL_OUT_MONO
= AUDIO_CHANNEL_OUT_FRONT_LEFT
,
180 AUDIO_CHANNEL_OUT_STEREO
= (AUDIO_CHANNEL_OUT_FRONT_LEFT
|
181 AUDIO_CHANNEL_OUT_FRONT_RIGHT
),
182 AUDIO_CHANNEL_OUT_QUAD
= (AUDIO_CHANNEL_OUT_FRONT_LEFT
|
183 AUDIO_CHANNEL_OUT_FRONT_RIGHT
|
184 AUDIO_CHANNEL_OUT_BACK_LEFT
|
185 AUDIO_CHANNEL_OUT_BACK_RIGHT
),
186 AUDIO_CHANNEL_OUT_SURROUND
= (AUDIO_CHANNEL_OUT_FRONT_LEFT
|
187 AUDIO_CHANNEL_OUT_FRONT_RIGHT
|
188 AUDIO_CHANNEL_OUT_FRONT_CENTER
|
189 AUDIO_CHANNEL_OUT_BACK_CENTER
),
190 AUDIO_CHANNEL_OUT_5POINT1
= (AUDIO_CHANNEL_OUT_FRONT_LEFT
|
191 AUDIO_CHANNEL_OUT_FRONT_RIGHT
|
192 AUDIO_CHANNEL_OUT_FRONT_CENTER
|
193 AUDIO_CHANNEL_OUT_LOW_FREQUENCY
|
194 AUDIO_CHANNEL_OUT_BACK_LEFT
|
195 AUDIO_CHANNEL_OUT_BACK_RIGHT
),
196 // matches the correct AudioFormat.CHANNEL_OUT_7POINT1_SURROUND definition for 7.1
197 AUDIO_CHANNEL_OUT_7POINT1
= (AUDIO_CHANNEL_OUT_FRONT_LEFT
|
198 AUDIO_CHANNEL_OUT_FRONT_RIGHT
|
199 AUDIO_CHANNEL_OUT_FRONT_CENTER
|
200 AUDIO_CHANNEL_OUT_LOW_FREQUENCY
|
201 AUDIO_CHANNEL_OUT_BACK_LEFT
|
202 AUDIO_CHANNEL_OUT_BACK_RIGHT
|
203 AUDIO_CHANNEL_OUT_SIDE_LEFT
|
204 AUDIO_CHANNEL_OUT_SIDE_RIGHT
),
205 AUDIO_CHANNEL_OUT_ALL
= (AUDIO_CHANNEL_OUT_FRONT_LEFT
|
206 AUDIO_CHANNEL_OUT_FRONT_RIGHT
|
207 AUDIO_CHANNEL_OUT_FRONT_CENTER
|
208 AUDIO_CHANNEL_OUT_LOW_FREQUENCY
|
209 AUDIO_CHANNEL_OUT_BACK_LEFT
|
210 AUDIO_CHANNEL_OUT_BACK_RIGHT
|
211 AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER
|
212 AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER
|
213 AUDIO_CHANNEL_OUT_BACK_CENTER
|
214 AUDIO_CHANNEL_OUT_SIDE_LEFT
|
215 AUDIO_CHANNEL_OUT_SIDE_RIGHT
|
216 AUDIO_CHANNEL_OUT_TOP_CENTER
|
217 AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT
|
218 AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER
|
219 AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT
|
220 AUDIO_CHANNEL_OUT_TOP_BACK_LEFT
|
221 AUDIO_CHANNEL_OUT_TOP_BACK_CENTER
|
222 AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT
),
225 AUDIO_CHANNEL_IN_LEFT
= 0x4,
226 AUDIO_CHANNEL_IN_RIGHT
= 0x8,
227 AUDIO_CHANNEL_IN_FRONT
= 0x10,
228 AUDIO_CHANNEL_IN_BACK
= 0x20,
229 AUDIO_CHANNEL_IN_LEFT_PROCESSED
= 0x40,
230 AUDIO_CHANNEL_IN_RIGHT_PROCESSED
= 0x80,
231 AUDIO_CHANNEL_IN_FRONT_PROCESSED
= 0x100,
232 AUDIO_CHANNEL_IN_BACK_PROCESSED
= 0x200,
233 AUDIO_CHANNEL_IN_PRESSURE
= 0x400,
234 AUDIO_CHANNEL_IN_X_AXIS
= 0x800,
235 AUDIO_CHANNEL_IN_Y_AXIS
= 0x1000,
236 AUDIO_CHANNEL_IN_Z_AXIS
= 0x2000,
237 AUDIO_CHANNEL_IN_VOICE_UPLINK
= 0x4000,
238 AUDIO_CHANNEL_IN_VOICE_DNLINK
= 0x8000,
240 AUDIO_CHANNEL_IN_MONO
= AUDIO_CHANNEL_IN_FRONT
,
241 AUDIO_CHANNEL_IN_STEREO
= (AUDIO_CHANNEL_IN_LEFT
| AUDIO_CHANNEL_IN_RIGHT
),
242 AUDIO_CHANNEL_IN_ALL
= (AUDIO_CHANNEL_IN_LEFT
|
243 AUDIO_CHANNEL_IN_RIGHT
|
244 AUDIO_CHANNEL_IN_FRONT
|
245 AUDIO_CHANNEL_IN_BACK
|
246 AUDIO_CHANNEL_IN_LEFT_PROCESSED
|
247 AUDIO_CHANNEL_IN_RIGHT_PROCESSED
|
248 AUDIO_CHANNEL_IN_FRONT_PROCESSED
|
249 AUDIO_CHANNEL_IN_BACK_PROCESSED
|
250 AUDIO_CHANNEL_IN_PRESSURE
|
251 AUDIO_CHANNEL_IN_X_AXIS
|
252 AUDIO_CHANNEL_IN_Y_AXIS
|
253 AUDIO_CHANNEL_IN_Z_AXIS
|
254 AUDIO_CHANNEL_IN_VOICE_UPLINK
|
255 AUDIO_CHANNEL_IN_VOICE_DNLINK
),
258 typedef uint32_t audio_channel_mask_t
;
261 AUDIO_MODE_INVALID
= -2,
262 AUDIO_MODE_CURRENT
= -1,
263 AUDIO_MODE_NORMAL
= 0,
264 AUDIO_MODE_RINGTONE
= 1,
265 AUDIO_MODE_IN_CALL
= 2,
266 AUDIO_MODE_IN_COMMUNICATION
= 3,
269 AUDIO_MODE_MAX
= AUDIO_MODE_CNT
- 1,
273 AUDIO_IN_ACOUSTICS_AGC_ENABLE
= 0x0001,
274 AUDIO_IN_ACOUSTICS_AGC_DISABLE
= 0,
275 AUDIO_IN_ACOUSTICS_NS_ENABLE
= 0x0002,
276 AUDIO_IN_ACOUSTICS_NS_DISABLE
= 0,
277 AUDIO_IN_ACOUSTICS_TX_IIR_ENABLE
= 0x0004,
278 AUDIO_IN_ACOUSTICS_TX_DISABLE
= 0,
279 } audio_in_acoustics_t
;
282 AUDIO_DEVICE_NONE
= 0x0,
284 AUDIO_DEVICE_BIT_IN
= 0x80000000,
285 AUDIO_DEVICE_BIT_DEFAULT
= 0x40000000,
287 AUDIO_DEVICE_OUT_EARPIECE
= 0x1,
288 AUDIO_DEVICE_OUT_SPEAKER
= 0x2,
289 AUDIO_DEVICE_OUT_WIRED_HEADSET
= 0x4,
290 AUDIO_DEVICE_OUT_WIRED_HEADPHONE
= 0x8,
291 AUDIO_DEVICE_OUT_BLUETOOTH_SCO
= 0x10,
292 AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET
= 0x20,
293 AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT
= 0x40,
294 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP
= 0x80,
295 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES
= 0x100,
296 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER
= 0x200,
297 AUDIO_DEVICE_OUT_AUX_DIGITAL
= 0x400,
298 AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET
= 0x800,
299 AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET
= 0x1000,
300 AUDIO_DEVICE_OUT_USB_ACCESSORY
= 0x2000,
301 AUDIO_DEVICE_OUT_USB_DEVICE
= 0x4000,
302 AUDIO_DEVICE_OUT_REMOTE_SUBMIX
= 0x8000,
303 AUDIO_DEVICE_OUT_DEFAULT
= AUDIO_DEVICE_BIT_DEFAULT
,
304 AUDIO_DEVICE_OUT_ALL
= (AUDIO_DEVICE_OUT_EARPIECE
|
305 AUDIO_DEVICE_OUT_SPEAKER
|
306 AUDIO_DEVICE_OUT_WIRED_HEADSET
|
307 AUDIO_DEVICE_OUT_WIRED_HEADPHONE
|
308 AUDIO_DEVICE_OUT_BLUETOOTH_SCO
|
309 AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET
|
310 AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT
|
311 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP
|
312 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES
|
313 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER
|
314 AUDIO_DEVICE_OUT_AUX_DIGITAL
|
315 AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET
|
316 AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET
|
317 AUDIO_DEVICE_OUT_USB_ACCESSORY
|
318 AUDIO_DEVICE_OUT_USB_DEVICE
|
319 AUDIO_DEVICE_OUT_REMOTE_SUBMIX
|
320 AUDIO_DEVICE_OUT_DEFAULT
),
321 AUDIO_DEVICE_OUT_ALL_A2DP
= (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP
|
322 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES
|
323 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER
),
324 AUDIO_DEVICE_OUT_ALL_SCO
= (AUDIO_DEVICE_OUT_BLUETOOTH_SCO
|
325 AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET
|
326 AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT
),
327 AUDIO_DEVICE_OUT_ALL_USB
= (AUDIO_DEVICE_OUT_USB_ACCESSORY
|
328 AUDIO_DEVICE_OUT_USB_DEVICE
),
331 AUDIO_DEVICE_IN_COMMUNICATION
= AUDIO_DEVICE_BIT_IN
| 0x1,
332 AUDIO_DEVICE_IN_AMBIENT
= AUDIO_DEVICE_BIT_IN
| 0x2,
333 AUDIO_DEVICE_IN_BUILTIN_MIC
= AUDIO_DEVICE_BIT_IN
| 0x4,
334 AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET
= AUDIO_DEVICE_BIT_IN
| 0x8,
335 AUDIO_DEVICE_IN_WIRED_HEADSET
= AUDIO_DEVICE_BIT_IN
| 0x10,
336 AUDIO_DEVICE_IN_AUX_DIGITAL
= AUDIO_DEVICE_BIT_IN
| 0x20,
337 AUDIO_DEVICE_IN_VOICE_CALL
= AUDIO_DEVICE_BIT_IN
| 0x40,
338 AUDIO_DEVICE_IN_BACK_MIC
= AUDIO_DEVICE_BIT_IN
| 0x80,
339 AUDIO_DEVICE_IN_REMOTE_SUBMIX
= AUDIO_DEVICE_BIT_IN
| 0x100,
340 AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET
= AUDIO_DEVICE_BIT_IN
| 0x200,
341 AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET
= AUDIO_DEVICE_BIT_IN
| 0x400,
342 AUDIO_DEVICE_IN_USB_ACCESSORY
= AUDIO_DEVICE_BIT_IN
| 0x800,
343 AUDIO_DEVICE_IN_USB_DEVICE
= AUDIO_DEVICE_BIT_IN
| 0x1000,
344 AUDIO_DEVICE_IN_DEFAULT
= AUDIO_DEVICE_BIT_IN
| AUDIO_DEVICE_BIT_DEFAULT
,
346 AUDIO_DEVICE_IN_ALL
= (AUDIO_DEVICE_IN_COMMUNICATION
|
347 AUDIO_DEVICE_IN_AMBIENT
|
348 AUDIO_DEVICE_IN_BUILTIN_MIC
|
349 AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET
|
350 AUDIO_DEVICE_IN_WIRED_HEADSET
|
351 AUDIO_DEVICE_IN_AUX_DIGITAL
|
352 AUDIO_DEVICE_IN_VOICE_CALL
|
353 AUDIO_DEVICE_IN_BACK_MIC
|
354 AUDIO_DEVICE_IN_REMOTE_SUBMIX
|
355 AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET
|
356 AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET
|
357 AUDIO_DEVICE_IN_USB_ACCESSORY
|
358 AUDIO_DEVICE_IN_USB_DEVICE
|
359 AUDIO_DEVICE_IN_DEFAULT
),
360 AUDIO_DEVICE_IN_ALL_SCO
= AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET
,
363 typedef uint32_t audio_devices_t
;
365 /* the audio output flags serve two purposes:
366 * - when an AudioTrack is created they indicate a "wish" to be connected to an
367 * output stream with attributes corresponding to the specified flags
368 * - when present in an output profile descriptor listed for a particular audio
369 * hardware module, they indicate that an output stream can be opened that
370 * supports the attributes indicated by the flags.
371 * the audio policy manager will try to match the flags in the request
372 * (when getOuput() is called) to an available output stream.
375 AUDIO_OUTPUT_FLAG_NONE
= 0x0, // no attributes
376 AUDIO_OUTPUT_FLAG_DIRECT
= 0x1, // this output directly connects a track
377 // to one output stream: no software mixer
378 AUDIO_OUTPUT_FLAG_PRIMARY
= 0x2, // this output is the primary output of
379 // the device. It is unique and must be
380 // present. It is opened by default and
381 // receives routing, audio mode and volume
382 // controls related to voice calls.
383 AUDIO_OUTPUT_FLAG_FAST
= 0x4, // output supports "fast tracks",
385 AUDIO_OUTPUT_FLAG_DEEP_BUFFER
= 0x8 // use deep audio buffers
386 } audio_output_flags_t
;
388 static inline bool audio_is_output_device(audio_devices_t device
)
390 if (((device
& AUDIO_DEVICE_BIT_IN
) == 0) &&
391 (popcount(device
) == 1) && ((device
& ~AUDIO_DEVICE_OUT_ALL
) == 0))
397 static inline bool audio_is_input_device(audio_devices_t device
)
399 if ((device
& AUDIO_DEVICE_BIT_IN
) != 0) {
400 device
&= ~AUDIO_DEVICE_BIT_IN
;
401 if ((popcount(device
) == 1) && ((device
& ~AUDIO_DEVICE_IN_ALL
) == 0))
407 static inline bool audio_is_output_devices(audio_devices_t device
)
409 return (device
& AUDIO_DEVICE_BIT_IN
) == 0;
413 static inline bool audio_is_a2dp_device(audio_devices_t device
)
415 if ((popcount(device
) == 1) && (device
& AUDIO_DEVICE_OUT_ALL_A2DP
))
421 static inline bool audio_is_bluetooth_sco_device(audio_devices_t device
)
423 device
&= ~AUDIO_DEVICE_BIT_IN
;
424 if ((popcount(device
) == 1) && (device
& (AUDIO_DEVICE_OUT_ALL_SCO
|
425 AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET
)))
431 static inline bool audio_is_usb_device(audio_devices_t device
)
433 if ((popcount(device
) == 1) && (device
& AUDIO_DEVICE_OUT_ALL_USB
))
439 static inline bool audio_is_remote_submix_device(audio_devices_t device
)
441 if ((popcount(device
) == 1) && (device
& AUDIO_DEVICE_OUT_REMOTE_SUBMIX
))
447 static inline bool audio_is_input_channel(uint32_t channel
)
449 if ((channel
& ~AUDIO_CHANNEL_IN_ALL
) == 0)
455 static inline bool audio_is_output_channel(uint32_t channel
)
457 if ((channel
& ~AUDIO_CHANNEL_OUT_ALL
) == 0)
463 /* Derive an output channel mask from a channel count.
464 * This is to be used when the content channel mask is unknown. The 1, 2, 4, 5, 6, 7 and 8 channel
465 * cases are mapped to the standard game/home-theater layouts, but note that 4 is mapped to quad,
466 * and not stereo + FC + mono surround. A channel count of 3 is arbitrarily mapped to stereo + FC
467 * for continuity with stereo.
468 * Returns the matching channel mask, or 0 if the number of channels exceeds that of the
469 * configurations for which a default channel mask is defined.
471 static inline audio_channel_mask_t
audio_channel_out_mask_from_count(uint32_t channel_count
)
473 switch(channel_count
) {
475 return AUDIO_CHANNEL_OUT_MONO
;
477 return AUDIO_CHANNEL_OUT_STEREO
;
479 return (AUDIO_CHANNEL_OUT_STEREO
| AUDIO_CHANNEL_OUT_FRONT_CENTER
);
481 return AUDIO_CHANNEL_OUT_QUAD
;
483 return (AUDIO_CHANNEL_OUT_QUAD
| AUDIO_CHANNEL_OUT_FRONT_CENTER
);
485 return AUDIO_CHANNEL_OUT_5POINT1
;
487 return (AUDIO_CHANNEL_OUT_5POINT1
| AUDIO_CHANNEL_OUT_BACK_CENTER
);
489 return AUDIO_CHANNEL_OUT_7POINT1
;
495 /* Similar to above, but for input. Currently handles only mono and stereo. */
496 static inline audio_channel_mask_t
audio_channel_in_mask_from_count(uint32_t channel_count
)
498 switch (channel_count
) {
500 return AUDIO_CHANNEL_IN_MONO
;
502 return AUDIO_CHANNEL_IN_STEREO
;
508 static inline bool audio_is_valid_format(audio_format_t format
)
510 switch (format
& AUDIO_FORMAT_MAIN_MASK
) {
511 case AUDIO_FORMAT_PCM
:
512 if (format
!= AUDIO_FORMAT_PCM_16_BIT
&&
513 format
!= AUDIO_FORMAT_PCM_8_BIT
) {
516 case AUDIO_FORMAT_MP3
:
517 case AUDIO_FORMAT_AMR_NB
:
518 case AUDIO_FORMAT_AMR_WB
:
519 case AUDIO_FORMAT_AAC
:
520 case AUDIO_FORMAT_HE_AAC_V1
:
521 case AUDIO_FORMAT_HE_AAC_V2
:
522 case AUDIO_FORMAT_VORBIS
:
529 static inline bool audio_is_linear_pcm(audio_format_t format
)
531 return ((format
& AUDIO_FORMAT_MAIN_MASK
) == AUDIO_FORMAT_PCM
);
534 static inline size_t audio_bytes_per_sample(audio_format_t format
)
539 case AUDIO_FORMAT_PCM_32_BIT
:
540 case AUDIO_FORMAT_PCM_8_24_BIT
:
541 size
= sizeof(int32_t);
543 case AUDIO_FORMAT_PCM_16_BIT
:
544 size
= sizeof(int16_t);
546 case AUDIO_FORMAT_PCM_8_BIT
:
547 size
= sizeof(uint8_t);
557 #endif // ANDROID_AUDIO_CORE_H