2 * Copyright (C) 2013 Intel Corporation
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.
23 #include <hardware/audio.h>
24 #include <hardware/hardware.h>
28 static ssize_t out_write(struct audio_stream_out *stream, const void *buffer,
35 static uint32_t out_get_sample_rate(const struct audio_stream *stream)
41 static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
47 static size_t out_get_buffer_size(const struct audio_stream *stream)
53 static uint32_t out_get_channels(const struct audio_stream *stream)
59 static audio_format_t out_get_format(const struct audio_stream *stream)
65 static int out_set_format(struct audio_stream *stream, audio_format_t format)
71 static int out_standby(struct audio_stream *stream)
77 static int out_dump(const struct audio_stream *stream, int fd)
83 static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
89 static char *out_get_parameters(const struct audio_stream *stream,
96 static uint32_t out_get_latency(const struct audio_stream_out *stream)
102 static int out_set_volume(struct audio_stream_out *stream, float left,
106 /* volume controlled in audioflinger mixer (digital) */
110 static int out_get_render_position(const struct audio_stream_out *stream,
111 uint32_t *dsp_frames)
117 static int out_add_audio_effect(const struct audio_stream *stream,
118 effect_handle_t effect)
124 static int out_remove_audio_effect(const struct audio_stream *stream,
125 effect_handle_t effect)
131 static uint32_t in_get_sample_rate(const struct audio_stream *stream)
137 static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate)
143 static size_t in_get_buffer_size(const struct audio_stream *stream)
149 static uint32_t in_get_channels(const struct audio_stream *stream)
155 static audio_format_t in_get_format(const struct audio_stream *stream)
161 static int in_set_format(struct audio_stream *stream, audio_format_t format)
167 static int in_standby(struct audio_stream *stream)
173 static int in_dump(const struct audio_stream *stream, int fd)
179 static int in_set_parameters(struct audio_stream *stream, const char *kvpairs)
185 static char *in_get_parameters(const struct audio_stream *stream,
192 static int in_set_gain(struct audio_stream_in *stream, float gain)
198 static ssize_t in_read(struct audio_stream_in *stream, void *buffer,
205 static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream)
211 static int in_add_audio_effect(const struct audio_stream *stream,
212 effect_handle_t effect)
218 static int in_remove_audio_effect(const struct audio_stream *stream,
219 effect_handle_t effect)
225 static int audio_open_output_stream(struct audio_hw_device *dev,
226 audio_io_handle_t handle,
227 audio_devices_t devices,
228 audio_output_flags_t flags,
229 struct audio_config *config,
230 struct audio_stream_out **stream_out)
233 struct audio_stream_out *out;
235 out = calloc(1, sizeof(struct audio_stream_out));
241 out->common.get_sample_rate = out_get_sample_rate;
242 out->common.set_sample_rate = out_set_sample_rate;
243 out->common.get_buffer_size = out_get_buffer_size;
244 out->common.get_channels = out_get_channels;
245 out->common.get_format = out_get_format;
246 out->common.set_format = out_set_format;
247 out->common.standby = out_standby;
248 out->common.dump = out_dump;
249 out->common.set_parameters = out_set_parameters;
250 out->common.get_parameters = out_get_parameters;
251 out->common.add_audio_effect = out_add_audio_effect;
252 out->common.remove_audio_effect = out_remove_audio_effect;
253 out->get_latency = out_get_latency;
254 out->set_volume = out_set_volume;
255 out->write = out_write;
256 out->get_render_position = out_get_render_position;
263 static void audio_close_output_stream(struct audio_hw_device *dev,
264 struct audio_stream_out *stream)
269 static int audio_set_parameters(struct audio_hw_device *dev,
276 static char *audio_get_parameters(const struct audio_hw_device *dev,
283 static int audio_init_check(const struct audio_hw_device *dev)
289 static int audio_set_voice_volume(struct audio_hw_device *dev, float volume)
295 static int audio_set_master_volume(struct audio_hw_device *dev, float volume)
301 static int audio_set_mode(struct audio_hw_device *dev, int mode)
307 static int audio_set_mic_mute(struct audio_hw_device *dev, bool state)
313 static int audio_get_mic_mute(const struct audio_hw_device *dev, bool *state)
319 static size_t audio_get_input_buffer_size(const struct audio_hw_device *dev,
320 const struct audio_config *config)
326 static int audio_open_input_stream(struct audio_hw_device *dev,
327 audio_io_handle_t handle,
328 audio_devices_t devices,
329 struct audio_config *config,
330 struct audio_stream_in **stream_in)
332 struct audio_stream_in *in;
336 in = calloc(1, sizeof(struct audio_stream_in));
340 in->common.get_sample_rate = in_get_sample_rate;
341 in->common.set_sample_rate = in_set_sample_rate;
342 in->common.get_buffer_size = in_get_buffer_size;
343 in->common.get_channels = in_get_channels;
344 in->common.get_format = in_get_format;
345 in->common.set_format = in_set_format;
346 in->common.standby = in_standby;
347 in->common.dump = in_dump;
348 in->common.set_parameters = in_set_parameters;
349 in->common.get_parameters = in_get_parameters;
350 in->common.add_audio_effect = in_add_audio_effect;
351 in->common.remove_audio_effect = in_remove_audio_effect;
352 in->set_gain = in_set_gain;
354 in->get_input_frames_lost = in_get_input_frames_lost;
361 static void audio_close_input_stream(struct audio_hw_device *dev,
362 struct audio_stream_in *stream_in)
368 static int audio_dump(const audio_hw_device_t *device, int fd)
374 static int audio_close(hw_device_t *device)
381 static int audio_open(const hw_module_t *module, const char *name,
382 hw_device_t **device)
384 struct audio_hw_device *audio;
388 if (strcmp(name, AUDIO_HARDWARE_INTERFACE)) {
389 error("interface %s not matching [%s]", name,
390 AUDIO_HARDWARE_INTERFACE);
394 audio = calloc(1, sizeof(struct audio_hw_device));
398 audio->common.version = AUDIO_DEVICE_API_VERSION_CURRENT;
399 audio->common.module = (struct hw_module_t *) module;
400 audio->common.close = audio_close;
402 audio->init_check = audio_init_check;
403 audio->set_voice_volume = audio_set_voice_volume;
404 audio->set_master_volume = audio_set_master_volume;
405 audio->set_mode = audio_set_mode;
406 audio->set_mic_mute = audio_set_mic_mute;
407 audio->get_mic_mute = audio_get_mic_mute;
408 audio->set_parameters = audio_set_parameters;
409 audio->get_parameters = audio_get_parameters;
410 audio->get_input_buffer_size = audio_get_input_buffer_size;
411 audio->open_output_stream = audio_open_output_stream;
412 audio->close_output_stream = audio_close_output_stream;
413 audio->open_input_stream = audio_open_input_stream;
414 audio->close_input_stream = audio_close_input_stream;
415 audio->dump = audio_dump;
417 *device = &audio->common;
422 static struct hw_module_methods_t hal_module_methods = {
426 struct audio_module HAL_MODULE_INFO_SYM = {
428 .tag = HARDWARE_MODULE_TAG,
431 .id = AUDIO_HARDWARE_MODULE_ID,
432 .name = "A2DP Bluez HW HAL",
433 .author = "Intel Corporation",
434 .methods = &hal_module_methods,