4 * Copyright (c) 2015 - 2016 Samsung Electronics Co., Ltd. All rights reserved.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
20 #ifndef footizenaudiofoo
21 #define footizenaudiofoo
27 * @brief This file contains the Audio Hardware Abstraction Layer Interfaces.
31 * @addtogroup TIZEN_AUDIO_HAL_MODULE
36 * @brief Enumeration for return codes.
39 typedef enum audio_return {
41 AUDIO_ERR_UNDEFINED = (int32_t)0x80001000,
42 AUDIO_ERR_RESOURCE = (int32_t)0x80001001,
43 AUDIO_ERR_PARAMETER = (int32_t)0x80001002,
44 AUDIO_ERR_IOCTL = (int32_t)0x80001003,
45 AUDIO_ERR_INVALID_STATE = (int32_t)0x80001004,
46 AUDIO_ERR_INTERNAL = (int32_t)0x80001005,
47 /* add new enemerator here */
48 AUDIO_ERR_NOT_IMPLEMENTED = (int32_t)0x80001100,
52 * @brief Enumeration for audio direction.
55 typedef enum audio_direction {
56 AUDIO_DIRECTION_IN, /**< Capture */
57 AUDIO_DIRECTION_OUT, /**< Playback */
61 * @brief Device information including type, direction and id.
64 typedef struct device_info {
71 * @brief Volume information including type, gain and direction.
74 typedef struct audio_volume_info {
78 } audio_volume_info_t ;
81 * @brief Route information including role and device.
84 typedef struct audio_route_info {
86 device_info_t *device_infos;
87 uint32_t num_of_devices;
91 * @brief Route option including role, name and value.
94 typedef struct audio_route_option {
98 } audio_route_option_t;
101 * @brief Stream information including role, direction and index.
104 typedef struct audio_stream_info {
108 } audio_stream_info_t ;
111 * @brief Called when audio hal implementation needs to send a message.
113 * @param[in] name The message name
114 * @param[in] value The message value
115 * @param[in] user_data The user data passed from the callback registration function
117 * @see audio_add_message_cb()
118 * @see audio_remove_message_cb()
120 typedef void (*message_cb)(const char *name, int value, void *user_data);
123 typedef struct audio_interface {
124 /* Initialization & de-initialization */
125 audio_return_t (*init)(void **audio_handle);
126 audio_return_t (*deinit)(void *audio_handle);
128 audio_return_t (*get_volume_level_max)(void *audio_handle, audio_volume_info_t *info, uint32_t *level);
129 audio_return_t (*get_volume_level)(void *audio_handle, audio_volume_info_t *info, uint32_t *level);
130 audio_return_t (*set_volume_level)(void *audio_handle, audio_volume_info_t *info, uint32_t level);
131 audio_return_t (*get_volume_value)(void *audio_handle, audio_volume_info_t *info, uint32_t level, double *value);
132 audio_return_t (*get_volume_mute)(void *audio_handle, audio_volume_info_t *info, uint32_t *mute);
133 audio_return_t (*set_volume_mute)(void *audio_handle, audio_volume_info_t *info, uint32_t mute);
135 audio_return_t (*update_route)(void *audio_handle, audio_route_info_t *info);
136 audio_return_t (*update_route_option)(void *audio_handle, audio_route_option_t *option);
138 audio_return_t (*notify_stream_connection_changed)(void *audio_handle, audio_stream_info_t *info, uint32_t is_connected);
140 audio_return_t (*pcm_open)(void *audio_handle, const char *card, const char *device, uint32_t direction, void *sample_spec, uint32_t period_size, uint32_t periods, void **pcm_handle);
141 audio_return_t (*pcm_start)(void *audio_handle, void *pcm_handle);
142 audio_return_t (*pcm_stop)(void *audio_handle, void *pcm_handle);
143 audio_return_t (*pcm_close)(void *audio_handle, void *pcm_handle);
144 audio_return_t (*pcm_avail)(void *audio_handle, void *pcm_handle, uint32_t *avail);
145 audio_return_t (*pcm_write)(void *audio_handle, void *pcm_handle, const void *buffer, uint32_t frames);
146 audio_return_t (*pcm_read)(void *audio_handle, void *pcm_handle, void *buffer, uint32_t frames);
147 audio_return_t (*pcm_get_fd)(void *audio_handle, void *pcm_handle, int *fd);
148 audio_return_t (*pcm_recover)(void *audio_handle, void *pcm_handle, int revents);
149 audio_return_t (*pcm_get_params)(void *audio_handle, void *pcm_handle, uint32_t direction, void **sample_spec, uint32_t *period_size, uint32_t *periods);
150 audio_return_t (*pcm_set_params)(void *audio_handle, void *pcm_handle, uint32_t direction, void *sample_spec, uint32_t period_size, uint32_t periods);
151 /* Message callback */
152 audio_return_t (*add_message_cb)(void *audio_handle, message_cb callback, void *user_data);
153 audio_return_t (*remove_message_cb)(void *audio_handle, message_cb callback);
157 * @brief Initializes audio hal.
159 * @param[out] audio_handle The audio hal handle
161 * @return @c 0 on success,
162 * otherwise a negative error value
163 * @retval #AUDIO_RET_OK Success
164 * @see audio_deinit()
166 audio_return_t audio_init(void **audio_handle);
169 * @brief De-initializes audio hal.
171 * @param[in] audio_handle The audio hal handle
173 * @return @c 0 on success,
174 * otherwise a negative error value
175 * @retval #AUDIO_RET_OK Success
178 audio_return_t audio_deinit(void *audio_handle);
181 * @brief Gets the maximum volume level supported for a particular volume information.
183 * @param[in] audio_handle The audio hal handle
184 * @param[in] info The audio volume information
185 * @param[out] level The maximum volume level
187 * @return @c 0 on success,
188 * otherwise a negative error value
189 * @retval #AUDIO_RET_OK Success
190 * @see audio_set_volume_level()
191 * @see audio_get_volume_level()
192 * @see audio_get_volume_value()
194 audio_return_t audio_get_volume_level_max(void *audio_handle, audio_volume_info_t *info, uint32_t *level);
197 * @brief Gets the volume level specified for a particular volume information.
199 * @param[in] audio_handle The audio hal handle
200 * @param[in] info The audio volume information
201 * @param[out] level The current volume level
203 * @return @c 0 on success,
204 * otherwise a negative error value
205 * @retval #AUDIO_RET_OK Success
206 * @see audio_set_volume_level()
207 * @see audio_get_volume_level_max()
208 * @see audio_get_volume_value()
210 audio_return_t audio_get_volume_level(void *audio_handle, audio_volume_info_t *info, uint32_t *level);
213 * @brief Sets the volume level specified for a particular volume information.
215 * @param[in] audio_handle The audio hal handle
216 * @param[in] info The audio volume information
217 * @param[in] level The volume level to be set
219 * @return @c 0 on success,
220 * otherwise a negative error value
221 * @retval #AUDIO_RET_OK Success
222 * @see audio_get_volume_level()
223 * @see audio_get_volume_level_max()
224 * @see audio_get_volume_value()
226 audio_return_t audio_set_volume_level(void *audio_handle, audio_volume_info_t *info, uint32_t level);
229 * @brief Gets the volume value specified for a particular volume information and level.
231 * @param[in] audio_handle The audio hal handle
232 * @param[in] info The audio volume information
233 * @param[in] level The volume level
234 * @param[out] value The volume value (range is from 0.0 to 1.0 inclusive, 1.0 = 100%)
236 * @return @c 0 on success,
237 * otherwise a negative error value
238 * @retval #AUDIO_RET_OK Success
239 * @see audio_set_volume_level()
240 * @see audio_get_volume_level()
241 * @see audio_get_volume_level_max()
243 audio_return_t audio_get_volume_value(void *audio_handle, audio_volume_info_t *info, uint32_t level, double *value);
246 * @brief Gets the volume mute specified for a particular volume information.
248 * @param[in] audio_handle The audio hal handle
249 * @param[in] info The audio volume information
250 * @param[out] mute The volume mute state : (@c 0 = unmute, @c 1 = mute)
252 * @return @c 0 on success,
253 * otherwise a negative error value
254 * @retval #AUDIO_RET_OK Success
255 * @see audio_set_volume_mute()
257 audio_return_t audio_get_volume_mute(void *audio_handle, audio_volume_info_t *info, uint32_t *mute);
260 * @brief Sets the volume mute specified for a particular volume information.
262 * @param[in] audio_handle The audio hal handle
263 * @param[in] info The audio volume information
264 * @param[in] mute The volume mute state to be set : (@c 0 = unmute, @c 1 = mute)
266 * @return @c 0 on success,
267 * otherwise a negative error value
268 * @retval #AUDIO_RET_OK Success
269 * @see audio_get_volume_mute()
271 audio_return_t audio_set_volume_mute(void *audio_handle, audio_volume_info_t *info, uint32_t mute);
274 * @brief Updates the audio routing according to audio route information.
276 * @param[in] audio_handle The audio hal handle
277 * @param[in] info The audio route information including role and devices
279 * @return @c 0 on success,
280 * otherwise a negative error value
281 * @retval #AUDIO_RET_OK Success
282 * @see audio_update_route_option()
284 audio_return_t audio_update_route(void *audio_handle, audio_route_info_t *info);
287 * @brief Updates audio routing option according to audio route option.
289 * @param[in] audio_handle The audio hal handle
290 * @param[in] option The option that can be used for audio routing including role, name and value
292 * @remarks This option can be used for audio routing.\n
293 * It is recommended to apply this option for routing per each role.
295 * @return @c 0 on success,
296 * otherwise a negative error value
297 * @retval #AUDIO_RET_OK Success
298 * @see audio_update_route()
300 audio_return_t audio_update_route_option(void *audio_handle, audio_route_option_t *option);
303 * @brief Gets notified when a stream is connected and disconnected.
305 * @param[in] audio_handle The audio hal handle
306 * @param[in] info The stream information including role, direction, index
307 * @param[in] is_connected The connection state of this stream (@c true = connected, @c false = disconnected)
309 * @remarks This information can be used for audio routing, volume controls and so on.
311 * @return @c 0 on success,
312 * otherwise a negative error value
313 * @retval #AUDIO_RET_OK Success
315 audio_return_t audio_notify_stream_connection_changed(void *audio_handle, audio_stream_info_t *info, uint32_t is_connected);
318 * @brief Opens a PCM device.
320 * @param[in] audio_handle The audio hal handle
321 * @param[in] card The card of PCM
322 * @param[in] device The device of PCM
323 * @param[in] direction The direction of PCM
324 * @param[in] sample_spec The sample specification
325 * @param[in] period_size The period size
326 * @param[in] periods The periods
327 * @param[out] pcm_handle The PCM handle
329 * @return @c 0 on success,
330 * otherwise a negative error value
331 * @retval #AUDIO_RET_OK Success
332 * @see audio_pcm_close()
334 audio_return_t audio_pcm_open(void *audio_handle, const char *card, const char *device, uint32_t direction, void *sample_spec, uint32_t period_size, uint32_t periods, void **pcm_handle);
337 * @brief Starts a PCM device.
339 * @param[in] audio_handle The audio hal handle
340 * @param[in] pcm_handle The PCM handle to be started
342 * @return @c 0 on success,
343 * otherwise a negative error value
344 * @retval #AUDIO_RET_OK Success
345 * @see audio_pcm_avail()
346 * @see audio_pcm_write()
347 * @see audio_pcm_read()
348 * @see audio_pcm_stop()
349 * @see audio_pcm_recover()
351 audio_return_t audio_pcm_start(void *audio_handle, void *pcm_handle);
354 * @brief Stops a PCM device.
356 * @param[in] audio_handle The audio hal handle
357 * @param[in] pcm_handle The PCM handle to be stopped
359 * @return @c 0 on success,
360 * otherwise a negative error value
361 * @retval #AUDIO_RET_OK Success
362 * @see audio_pcm_start()
364 audio_return_t audio_pcm_stop(void *audio_handle, void *pcm_handle);
367 * @brief Closes a PCM device.
369 * @param[in] audio_handle The audio hal handle
370 * @param[in] pcm_handle The PCM handle to be closed
372 * @return @c 0 on success,
373 * otherwise a negative error value
374 * @retval #AUDIO_RET_OK Success
375 * @see audio_pcm_open()
377 audio_return_t audio_pcm_close(void *audio_handle, void *pcm_handle);
380 * @brief Gets available number of frames.
382 * @param[in] audio_handle The audio hal handle
383 * @param[in] pcm_handle The PCM handle
384 * @param[out] avail The available number of frames
386 * @return @c 0 on success,
387 * otherwise a negative error value
388 * @retval #AUDIO_RET_OK Success
389 * @see audio_pcm_write()
390 * @see audio_pcm_read()
392 audio_return_t audio_pcm_avail(void *audio_handle, void *pcm_handle, uint32_t *avail);
395 * @brief Writes frames to a PCM device.
397 * @param[in] audio_handle The audio hal handle
398 * @param[in] pcm_handle The PCM handle
399 * @param[in] buffer The buffer containing frames
400 * @param[in] frames The number of frames to be written
402 * @return @c 0 on success,
403 * otherwise a negative error value
404 * @retval #AUDIO_RET_OK Success
405 * @see audio_pcm_avail()
406 * @see audio_pcm_recover()
408 audio_return_t audio_pcm_write(void *audio_handle, void *pcm_handle, const void *buffer, uint32_t frames);
411 * @brief Reads frames from a PCM device.
413 * @param[in] audio_handle The audio hal handle
414 * @param[in] pcm_handle The PCM handle
415 * @param[out] buffer The buffer containing frames
416 * @param[in] frames The number of frames to be read
418 * @return @c 0 on success,
419 * otherwise a negative error value
420 * @retval #AUDIO_RET_OK Success
421 * @see audio_pcm_avail()
422 * @see audio_pcm_recover()
424 audio_return_t audio_pcm_read(void *audio_handle, void *pcm_handle, void *buffer, uint32_t frames);
427 * @brief Gets poll descriptor for a PCM handle.
429 * @param[in] audio_handle The audio hal handle
430 * @param[in] pcm_handle The PCM handle
431 * @param[out] fd The poll descriptor
433 * @return @c 0 on success,
434 * otherwise a negative error value
435 * @retval #AUDIO_RET_OK Success
436 * @see audio_pcm_open()
437 * @see audio_pcm_recover()
439 audio_return_t audio_pcm_get_fd(void *audio_handle, void *pcm_handle, int *fd);
442 * @brief Recovers the PCM state.
444 * @param[in] audio_handle The audio hal handle
445 * @param[in] pcm_handle The PCM handle
446 * @param[in] revents The returned event from pollfd
448 * @return @c 0 on success,
449 * otherwise a negative error value
450 * @retval #AUDIO_RET_OK Success
451 * @see audio_pcm_start()
452 * @see audio_pcm_write()
453 * @see audio_pcm_read()
454 * @see audio_pcm_get_fd()
456 audio_return_t audio_pcm_recover(void *audio_handle, void *pcm_handle, int revents);
459 * @brief Gets parameters of a PCM device.
461 * @param[in] audio_handle The audio hal handle
462 * @param[in] pcm_handle The PCM handle
463 * @param[in] direction The direction of PCM
464 * @param[out] sample_spec The sample specification
465 * @param[out] period_size The period size
466 * @param[out] periods The periods
468 * @return @c 0 on success,
469 * otherwise a negative error value
470 * @retval #AUDIO_RET_OK Success
471 * @see audio_pcm_set_params()
473 audio_return_t audio_pcm_get_params(void *audio_handle, void *pcm_handle, uint32_t direction, void **sample_spec, uint32_t *period_size, uint32_t *periods);
476 * @brief Sets hardware and software parameters of a PCM device.
478 * @param[in] audio_handle The audio hal handle
479 * @param[in] pcm_handle The PCM handle
480 * @param[in] direction The direction of PCM
481 * @param[in] sample_spec The sample specification
482 * @param[in] period_size The period size
483 * @param[in] periods The periods
485 * @return @c 0 on success,
486 * otherwise a negative error value
487 * @retval #AUDIO_RET_OK Success
488 * @see audio_pcm_set_params()
490 audio_return_t audio_pcm_set_params(void *audio_handle, void *pcm_handle, uint32_t direction, void *sample_spec, uint32_t period_size, uint32_t periods);
493 * @brief Adds the message callback function.
495 * @param[in] audio_handle The audio hal handle
496 * @param[in] message_cb The message callback function
497 * @param[in] user_data The user data passed to the callback function
500 * @see audio_remove_message_cb()
502 audio_return_t audio_add_message_cb(void *audio_handle, message_cb callback, void *user_data);
505 * @brief Removes the message callback function.
507 * @param[in] audio_handle The audio hal handle
508 * @param[in] message_cb The message callback function to be removed
511 * @see audio_add_message_cb()
513 audio_return_t audio_remove_message_cb(void *audio_handle, message_cb callback);