225 static void do_out_standby(struct stream_out *out)  in do_out_standby()  argument
227     struct audio_device *adev = out->dev;  in do_out_standby()
229     if (!out->standby) {  in do_out_standby()
230         pcm_close(out->pcm);  in do_out_standby()
231         out->pcm = NULL;  in do_out_standby()
233         if (out->resampler) {  in do_out_standby()
234             release_resampler(out->resampler);  in do_out_standby()
235             out->resampler = NULL;  in do_out_standby()
237         if (out->buffer) {  in do_out_standby()
238             free(out->buffer);  in do_out_standby()
239             out->buffer = NULL;  in do_out_standby()
241         out->standby = true;  in do_out_standby()
267 static int start_output_stream(struct stream_out *out)  in start_output_stream()  argument
269     struct audio_device *adev = out->dev;  in start_output_stream()
281         out->pcm_config = &pcm_config_sco;  in start_output_stream()
284         out->pcm_config = &pcm_config_out;  in start_output_stream()
285         out->buffer_type = OUT_BUFFER_TYPE_UNKNOWN;  in start_output_stream()
298         if (((out->pcm_config->rate % 8000 == 0) &&  in start_output_stream()
300                  ((out->pcm_config->rate % 11025 == 0) &&  in start_output_stream()
306     out->pcm = pcm_open(PCM_CARD, device, PCM_OUT | PCM_NORESTART | PCM_MONOTONIC, out->pcm_config);  in start_output_stream()
308     if (out->pcm && !pcm_is_ready(out->pcm)) {  in start_output_stream()
309         ALOGE("pcm_open(out) failed: %s", pcm_get_error(out->pcm));  in start_output_stream()
310         pcm_close(out->pcm);  in start_output_stream()
318     if (out_get_sample_rate(&out->stream.common) != out->pcm_config->rate) {  in start_output_stream()
319         ret = create_resampler(out_get_sample_rate(&out->stream.common),  in start_output_stream()
320                                out->pcm_config->rate,  in start_output_stream()
321                                out->pcm_config->channels,  in start_output_stream()
324                                &out->resampler);  in start_output_stream()
325         out->buffer_frames = (pcm_config_out.period_size * out->pcm_config->rate) /  in start_output_stream()
326                 out_get_sample_rate(&out->stream.common) + 1;  in start_output_stream()
328         out->buffer = malloc(pcm_frames_to_bytes(out->pcm, out->buffer_frames));  in start_output_stream()
331     adev->active_out = out;  in start_output_stream()
364         struct stream_out *out = adev->active_out;  in start_input_stream()  local
365         pthread_mutex_lock(&out->lock);  in start_input_stream()
367                  (out->pcm_config->rate % 8000) != 0) ||  in start_input_stream()
369                  (out->pcm_config->rate % 11025) != 0))  in start_input_stream()
370             do_out_standby(out);  in start_input_stream()
371         pthread_mutex_unlock(&out->lock);  in start_input_stream()
540     struct stream_out *out = (struct stream_out *)stream;  in out_standby()  local
542     pthread_mutex_lock(&out->dev->lock);  in out_standby()
543     pthread_mutex_lock(&out->lock);  in out_standby()
544     do_out_standby(out);  in out_standby()
545     pthread_mutex_unlock(&out->lock);  in out_standby()
546     pthread_mutex_unlock(&out->dev->lock);  in out_standby()
558     struct stream_out *out = (struct stream_out *)stream;  in out_set_parameters()  local
559     struct audio_device *adev = out->dev;  in out_set_parameters()
579                 pthread_mutex_lock(&out->lock);  in out_set_parameters()
580                 do_out_standby(out);  in out_set_parameters()
581                 pthread_mutex_unlock(&out->lock);  in out_set_parameters()
601     struct stream_out *out = (struct stream_out *)stream;  in out_get_latency()  local
602     struct audio_device *adev = out->dev;  in out_get_latency()
627     struct stream_out *out = (struct stream_out *)stream;  in out_write()  local
628     struct audio_device *adev = out->dev;  in out_write()
644     pthread_mutex_lock(&out->lock);  in out_write()
645     if (out->standby) {  in out_write()
646         ret = start_output_stream(out);  in out_write()
651         out->standby = false;  in out_write()
660     if (!sco_on && (buffer_type != out->buffer_type)) {  in out_write()
668         out->write_threshold = out->pcm_config->period_size * period_count;  in out_write()
670         if (out->buffer_type == OUT_BUFFER_TYPE_UNKNOWN)  in out_write()
671             out->cur_write_threshold = out->write_threshold;  in out_write()
672         out->buffer_type = buffer_type;  in out_write()
677                  (int)out->pcm_config->channels) {  in out_write()
689     if (out_get_sample_rate(&stream->common) != out->pcm_config->rate) {  in out_write()
690         out_frames = out->buffer_frames;  in out_write()
691         out->resampler->resample_from_input(out->resampler,  in out_write()
693                                             out->buffer, &out_frames);  in out_write()
694         in_buffer = out->buffer;  in out_write()
701         size_t period_size = out->pcm_config->period_size;  in out_write()
707             if (pcm_get_htimestamp(out->pcm,  in out_write()
711             kernel_frames = pcm_get_buffer_size(out->pcm) - kernel_frames;  in out_write()
713             if (kernel_frames > out->cur_write_threshold) {  in out_write()
715                     (int)(((int64_t)(kernel_frames - out->cur_write_threshold)  in out_write()
716                                     * 1000000) / out->pcm_config->rate);  in out_write()
729         } while ((kernel_frames > out->cur_write_threshold) &&  in out_write()
739         if (out->cur_write_threshold > out->write_threshold) {  in out_write()
740             out->cur_write_threshold -= period_size / 4;  in out_write()
741             if (out->cur_write_threshold < out->write_threshold) {  in out_write()
742                 out->cur_write_threshold = out->write_threshold;  in out_write()
744         } else if (out->cur_write_threshold < out->write_threshold) {  in out_write()
745             out->cur_write_threshold += period_size / 4;  in out_write()
746             if (out->cur_write_threshold > out->write_threshold) {  in out_write()
747                 out->cur_write_threshold = out->write_threshold;  in out_write()
749         } else if ((kernel_frames < out->write_threshold) &&  in out_write()
750             ((out->write_threshold - kernel_frames) >  in out_write()
752             out->cur_write_threshold = (kernel_frames / period_size + 1) * period_size;  in out_write()
753             out->cur_write_threshold += period_size / 4;  in out_write()
757     ret = pcm_write(out->pcm, in_buffer, out_frames * frame_size);  in out_write()
760         pthread_mutex_unlock(&out->lock);  in out_write()
764         out->written += out_frames;  in out_write()
768     pthread_mutex_unlock(&out->lock);  in out_write()
803     struct stream_out *out = (struct stream_out *)stream;  in out_get_presentation_position()  local
806     pthread_mutex_lock(&out->lock);  in out_get_presentation_position()
809     if (pcm_get_htimestamp(out->pcm, &avail, timestamp) == 0) {  in out_get_presentation_position()
810         size_t kernel_buffer_size = out->pcm_config->period_size * out->pcm_config->period_count;  in out_get_presentation_position()
812         int64_t signed_frames = out->written - kernel_buffer_size + avail;  in out_get_presentation_position()
820     pthread_mutex_unlock(&out->lock);  in out_get_presentation_position()
1030     struct stream_out *out;  in adev_open_output_stream()  local
1033     out = (struct stream_out *)calloc(1, sizeof(struct stream_out));  in adev_open_output_stream()
1034     if (!out)  in adev_open_output_stream()
1037     out->stream.common.get_sample_rate = out_get_sample_rate;  in adev_open_output_stream()
1038     out->stream.common.set_sample_rate = out_set_sample_rate;  in adev_open_output_stream()
1039     out->stream.common.get_buffer_size = out_get_buffer_size;  in adev_open_output_stream()
1040     out->stream.common.get_channels = out_get_channels;  in adev_open_output_stream()
1041     out->stream.common.get_format = out_get_format;  in adev_open_output_stream()
1042     out->stream.common.set_format = out_set_format;  in adev_open_output_stream()
1043     out->stream.common.standby = out_standby;  in adev_open_output_stream()
1044     out->stream.common.dump = out_dump;  in adev_open_output_stream()
1045     out->stream.common.set_parameters = out_set_parameters;  in adev_open_output_stream()
1046     out->stream.common.get_parameters = out_get_parameters;  in adev_open_output_stream()
1047     out->stream.common.add_audio_effect = out_add_audio_effect;  in adev_open_output_stream()
1048     out->stream.common.remove_audio_effect = out_remove_audio_effect;  in adev_open_output_stream()
1049     out->stream.get_latency = out_get_latency;  in adev_open_output_stream()
1050     out->stream.set_volume = out_set_volume;  in adev_open_output_stream()
1051     out->stream.write = out_write;  in adev_open_output_stream()
1052     out->stream.get_render_position = out_get_render_position;  in adev_open_output_stream()
1053     out->stream.get_next_write_timestamp = out_get_next_write_timestamp;  in adev_open_output_stream()
1054     out->stream.get_presentation_position = out_get_presentation_position;  in adev_open_output_stream()
1056     out->dev = adev;  in adev_open_output_stream()
1058     config->format = out_get_format(&out->stream.common);  in adev_open_output_stream()
1059     config->channel_mask = out_get_channels(&out->stream.common);  in adev_open_output_stream()
1060     config->sample_rate = out_get_sample_rate(&out->stream.common);  in adev_open_output_stream()
1062     out->standby = true;  in adev_open_output_stream()
1065     *stream_out = &out->stream;  in adev_open_output_stream()
1069     free(out);  in adev_open_output_stream()