246 static void do_in_standby(struct stream_in *in)  in do_in_standby()  argument
248     struct audio_device *adev = in->dev;  in do_in_standby()
250     if (!in->standby) {  in do_in_standby()
251         pcm_close(in->pcm);  in do_in_standby()
252         in->pcm = NULL;  in do_in_standby()
254         if (in->resampler) {  in do_in_standby()
255             release_resampler(in->resampler);  in do_in_standby()
256             in->resampler = NULL;  in do_in_standby()
258         if (in->buffer) {  in do_in_standby()
259             free(in->buffer);  in do_in_standby()
260             in->buffer = NULL;  in do_in_standby()
262         in->standby = true;  in do_in_standby()
296         struct stream_in *in = adev->active_in;  in start_output_stream()  local
297         pthread_mutex_lock(&in->lock);  in start_output_stream()
299                  (in->pcm_config->rate % 8000) != 0) ||  in start_output_stream()
301                  (in->pcm_config->rate % 11025) != 0))  in start_output_stream()
302             do_in_standby(in);  in start_output_stream()
303         pthread_mutex_unlock(&in->lock);  in start_output_stream()
337 static int start_input_stream(struct stream_in *in)  in start_input_stream()  argument
339     struct audio_device *adev = in->dev;  in start_input_stream()
350         in->pcm_config = &pcm_config_sco;  in start_input_stream()
353         in->pcm_config = in->pcm_config_non_sco;  in start_input_stream()
366         if (((in->pcm_config->rate % 8000 == 0) &&  in start_input_stream()
368                  ((in->pcm_config->rate % 11025 == 0) &&  in start_input_stream()
374     in->pcm = pcm_open(PCM_CARD, device, PCM_IN, in->pcm_config);  in start_input_stream()
376     if (in->pcm && !pcm_is_ready(in->pcm)) {  in start_input_stream()
377         ALOGE("pcm_open(in) failed: %s", pcm_get_error(in->pcm));  in start_input_stream()
378         pcm_close(in->pcm);  in start_input_stream()
386     if (in_get_sample_rate(&in->stream.common) != in->pcm_config->rate) {  in start_input_stream()
387         in->buf_provider.get_next_buffer = get_next_buffer;  in start_input_stream()
388         in->buf_provider.release_buffer = release_buffer;  in start_input_stream()
390         ret = create_resampler(in->pcm_config->rate,  in start_input_stream()
391                                in_get_sample_rate(&in->stream.common),  in start_input_stream()
394                                &in->buf_provider,  in start_input_stream()
395                                &in->resampler);  in start_input_stream()
397     in->buffer_size = pcm_frames_to_bytes(in->pcm,  in start_input_stream()
398                                           in->pcm_config->period_size);  in start_input_stream()
399     in->buffer = malloc(in->buffer_size);  in start_input_stream()
400     in->frames_in = 0;  in start_input_stream()
402     adev->active_in = in;  in start_input_stream()
410     struct stream_in *in;  in get_next_buffer()  local
415     in = (struct stream_in *)((char *)buffer_provider -  in get_next_buffer()
418     if (in->pcm == NULL) {  in get_next_buffer()
421         in->read_status = -ENODEV;  in get_next_buffer()
425     if (in->frames_in == 0) {  in get_next_buffer()
426         in->read_status = pcm_read(in->pcm,  in get_next_buffer()
427                                    (void*)in->buffer,  in get_next_buffer()
428                                    in->buffer_size);  in get_next_buffer()
429         if (in->read_status != 0) {  in get_next_buffer()
430             ALOGE("get_next_buffer() pcm_read error %d", in->read_status);  in get_next_buffer()
433             return in->read_status;  in get_next_buffer()
435         in->frames_in = in->pcm_config->period_size;  in get_next_buffer()
436         if (in->pcm_config->channels == 2) {  in get_next_buffer()
440             for (i = 1; i < in->frames_in; i++)  in get_next_buffer()
441                 in->buffer[i] = in->buffer[i * 2];  in get_next_buffer()
445     buffer->frame_count = (buffer->frame_count > in->frames_in) ?  in get_next_buffer()
446                                 in->frames_in : buffer->frame_count;  in get_next_buffer()
447     buffer->i16 = in->buffer + (in->pcm_config->period_size - in->frames_in);  in get_next_buffer()
449     return in->read_status;  in get_next_buffer()
456     struct stream_in *in;  in release_buffer()  local
461     in = (struct stream_in *)((char *)buffer_provider -  in release_buffer()
464     in->frames_in -= buffer->frame_count;  in release_buffer()
469 static ssize_t read_frames(struct stream_in *in, void *buffer, ssize_t frames)  in read_frames()  argument
475         if (in->resampler != NULL) {  in read_frames()
476             in->resampler->resample_from_provider(in->resampler,  in read_frames()
478                             frames_wr * audio_stream_in_frame_size(&in->stream)),  in read_frames()
485             get_next_buffer(&in->buf_provider, &buf);  in read_frames()
488                            frames_wr * audio_stream_in_frame_size(&in->stream),  in read_frames()
490                         buf.frame_count * audio_stream_in_frame_size(&in->stream));  in read_frames()
493             release_buffer(&in->buf_provider, &buf);  in read_frames()
497         if (in->read_status != 0)  in read_frames()
498             return in->read_status;  in read_frames()
828     struct stream_in *in = (struct stream_in *)stream;  in in_get_sample_rate()  local
830     return in->requested_rate;  in in_get_sample_rate()
840     struct stream_in *in = (struct stream_in *)stream;  in in_get_buffer_size()  local
848     size = (in->pcm_config->period_size * in_get_sample_rate(stream)) /  in in_get_buffer_size()
849             in->pcm_config->rate;  in in_get_buffer_size()
852     return size * audio_stream_in_frame_size(&in->stream);  in in_get_buffer_size()
872     struct stream_in *in = (struct stream_in *)stream;  in in_standby()  local
874     pthread_mutex_lock(&in->dev->lock);  in in_standby()
875     pthread_mutex_lock(&in->lock);  in in_standby()
876     do_in_standby(in);  in in_standby()
877     pthread_mutex_unlock(&in->lock);  in in_standby()
878     pthread_mutex_unlock(&in->dev->lock);  in in_standby()
890     struct stream_in *in = (struct stream_in *)stream;  in in_set_parameters()  local
891     struct audio_device *adev = in->dev;  in in_set_parameters()
911                 pthread_mutex_lock(&in->lock);  in in_set_parameters()
912                 do_in_standby(in);  in in_set_parameters()
913                 pthread_mutex_unlock(&in->lock);  in in_set_parameters()
941     struct stream_in *in = (struct stream_in *)stream;  in in_read()  local
942     struct audio_device *adev = in->dev;  in in_read()
952     pthread_mutex_lock(&in->lock);  in in_read()
953     if (in->standby) {  in in_read()
954         ret = start_input_stream(in);  in in_read()
956             in->standby = 0;  in in_read()
965     } else */if (in->resampler != NULL) {  in in_read()
966         ret = read_frames(in, buffer, frames_rq);  in in_read()
967     } else if (in->pcm_config->channels == 2) {  in in_read()
975         ret = pcm_read(in->pcm, in->buffer, bytes * 2);  in in_read()
979             in_buffer[i] = in->buffer[i * 2];  in in_read()
981         ret = pcm_read(in->pcm, buffer, bytes);  in in_read()
999     pthread_mutex_unlock(&in->lock);  in in_read()
1201     struct stream_in *in;  in adev_open_input_stream()  local
1212     in = (struct stream_in *)calloc(1, sizeof(struct stream_in));  in adev_open_input_stream()
1213     if (!in)  in adev_open_input_stream()
1216     in->stream.common.get_sample_rate = in_get_sample_rate;  in adev_open_input_stream()
1217     in->stream.common.set_sample_rate = in_set_sample_rate;  in adev_open_input_stream()
1218     in->stream.common.get_buffer_size = in_get_buffer_size;  in adev_open_input_stream()
1219     in->stream.common.get_channels = in_get_channels;  in adev_open_input_stream()
1220     in->stream.common.get_format = in_get_format;  in adev_open_input_stream()
1221     in->stream.common.set_format = in_set_format;  in adev_open_input_stream()
1222     in->stream.common.standby = in_standby;  in adev_open_input_stream()
1223     in->stream.common.dump = in_dump;  in adev_open_input_stream()
1224     in->stream.common.set_parameters = in_set_parameters;  in adev_open_input_stream()
1225     in->stream.common.get_parameters = in_get_parameters;  in adev_open_input_stream()
1226     in->stream.common.add_audio_effect = in_add_audio_effect;  in adev_open_input_stream()
1227     in->stream.common.remove_audio_effect = in_remove_audio_effect;  in adev_open_input_stream()
1228     in->stream.set_gain = in_set_gain;  in adev_open_input_stream()
1229     in->stream.read = in_read;  in adev_open_input_stream()
1230     in->stream.get_input_frames_lost = in_get_input_frames_lost;  in adev_open_input_stream()
1232     in->dev = adev;  in adev_open_input_stream()
1233     in->standby = true;  in adev_open_input_stream()
1234     in->requested_rate = config->sample_rate;  in adev_open_input_stream()
1236     in->pcm_config = (config->sample_rate == IN_SAMPLING_RATE) && (flags & AUDIO_INPUT_FLAG_FAST) ?  in adev_open_input_stream()
1238     in->pcm_config_non_sco = in->pcm_config;  in adev_open_input_stream()
1240     *stream_in = &in->stream;  in adev_open_input_stream()
1247     struct stream_in *in = (struct stream_in *)stream;  in adev_close_input_stream()  local