static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
size_t bytes)
{
int ret;
struct stream_out *out = (struct stream_out *)stream;
pthread_mutex_lock(&out->dev->lock);
pthread_mutex_lock(&out->lock);
if (out->standby) {
ret = start_output_stream(out);
if (ret != 0) {
goto err;
}
out->standby = false;
}
pcm_write(out->pcm, (void *)buffer, bytes);
pthread_mutex_unlock(&out->lock);
pthread_mutex_unlock(&out->dev->lock);
return bytes;
err:
pthread_mutex_unlock(&out->lock);
if (ret != 0) {
usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) /
out_get_sample_rate(&stream->common));
}
return bytes;
}
static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
size_t bytes)
{
/* XXX: fake timing for audio output */
usleep(bytes * 1000000 / audio_stream_out_frame_size(stream) /
out_get_sample_rate(&stream->common));
return bytes;
}
static ssize_t out_write(struct audio_stream_out *stream, const void* buffer, size_t bytes)
{
int ret;
struct stream_out *out = (struct stream_out *)stream;
pthread_mutex_lock(&out->dev->lock);
pthread_mutex_lock(&out->lock);
if (out->standby) {
ret = start_output_stream(out);
if (ret != 0) {
pthread_mutex_unlock(&out->dev->lock);
goto err;
}
out->standby = false;
}
pthread_mutex_unlock(&out->dev->lock);
alsa_device_proxy* proxy = &out->proxy;
const void * write_buff = buffer;
int num_write_buff_bytes = bytes;
const int num_device_channels = proxy_get_channel_count(proxy); /* what we told alsa */
const int num_req_channels = out->hal_channel_count; /* what we told AudioFlinger */
if (num_device_channels != num_req_channels) {
/* allocate buffer */
const size_t required_conversion_buffer_size =
bytes * num_device_channels / num_req_channels;
if (required_conversion_buffer_size > out->conversion_buffer_size) {
out->conversion_buffer_size = required_conversion_buffer_size;
out->conversion_buffer = realloc(out->conversion_buffer,
out->conversion_buffer_size);
}
/* convert data */
const audio_format_t audio_format = out_get_format(&(out->stream.common));
const unsigned sample_size_in_bytes = audio_bytes_per_sample(audio_format);
num_write_buff_bytes =
adjust_channels(write_buff, num_req_channels,
out->conversion_buffer, num_device_channels,
sample_size_in_bytes, num_write_buff_bytes);
write_buff = out->conversion_buffer;
}
if (write_buff != NULL && num_write_buff_bytes != 0) {
proxy_write(&out->proxy, write_buff, num_write_buff_bytes);
}
pthread_mutex_unlock(&out->lock);
return bytes;
err:
pthread_mutex_unlock(&out->lock);
if (ret != 0) {
usleep(bytes * 1000000 / audio_stream_out_frame_size(stream) /
out_get_sample_rate(&stream->common));
}
return bytes;
}
static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
size_t bytes)
{
int ret = 0;
struct stream_out *out = (struct stream_out *)stream;
struct audio_device *adev = out ? out->dev : NULL;
if(adev == NULL) return -ENOSYS;
ALOGV("%s enter",__func__);
pthread_mutex_lock(&out->dev->lock);
pthread_mutex_lock(&out->lock);
// there is a possibility that the HD interface is open
// and normal pcm stream is still active. Feed the new
// interface to normal pcm stream
if(adev->active_pcm) {
if(adev->active_pcm != out->pcm)
out->pcm = adev->active_pcm;
}
if ((out->standby) || (!adev->active_pcm)) {
ret = start_output_stream(out);
if (ret != 0) {
goto err;
}
out->standby = false;
}
if(!out->pcm){
ALOGD("%s: null handle to write - device already closed",__func__);
goto err;
}
ret = pcm_write(out->pcm, (void *)buffer, bytes);
ALOGVV("%s: pcm_write returned = %d rate = %d",__func__,ret,out->pcm_config.rate);
err:
pthread_mutex_unlock(&out->lock);
pthread_mutex_unlock(&out->dev->lock);
if (ret != 0) {
uint64_t duration_ms = ((bytes * 1000)/
(audio_stream_frame_size(&stream->common)) /
(out_get_sample_rate(&stream->common)));
ALOGV("%s : silence written", __func__);
usleep(duration_ms * 1000);
}
ALOGV("%s exit",__func__);
return bytes;
}
static int adev_open_output_stream(struct audio_hw_device *dev,
audio_io_handle_t handle,
audio_devices_t devices,
audio_output_flags_t flags,
struct audio_config *config,
struct audio_stream_out **stream_out)
{
struct audio_device *adev = (struct audio_device *)dev;
struct stream_out *out;
int ret;
out = (struct stream_out *)calloc(1, sizeof(struct stream_out));
if (!out)
return -ENOMEM;
out->stream.common.get_sample_rate = out_get_sample_rate;
out->stream.common.set_sample_rate = out_set_sample_rate;
out->stream.common.get_buffer_size = out_get_buffer_size;
out->stream.common.get_channels = out_get_channels;
out->stream.common.get_format = out_get_format;
out->stream.common.set_format = out_set_format;
out->stream.common.standby = out_standby;
out->stream.common.dump = out_dump;
out->stream.common.set_parameters = out_set_parameters;
out->stream.common.get_parameters = out_get_parameters;
out->stream.common.add_audio_effect = out_add_audio_effect;
out->stream.common.remove_audio_effect = out_remove_audio_effect;
out->stream.get_latency = out_get_latency;
out->stream.set_volume = out_set_volume;
out->stream.write = out_write;
out->stream.get_render_position = out_get_render_position;
out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
out->dev = adev;
config->format = out_get_format(&out->stream.common);
config->channel_mask = out_get_channels(&out->stream.common);
config->sample_rate = out_get_sample_rate(&out->stream.common);
out->standby = true;
adev->card = -1;
adev->device = -1;
*stream_out = &out->stream;
return 0;
err_open:
free(out);
*stream_out = NULL;
return ret;
}
static uint32_t out_get_latency(const struct audio_stream_out *stream)
{
return (pcm_config.period_size * pcm_config.period_count * 1000) /
out_get_sample_rate(&stream->common);
}
static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
size_t bytes)
{
//ALOGV("out_write(bytes=%d)", bytes);
ssize_t written_frames = 0;
struct submix_stream_out *out = reinterpret_cast<struct submix_stream_out *>(stream);
const size_t frame_size = audio_stream_frame_size(&stream->common);
const size_t frames = bytes / frame_size;
pthread_mutex_lock(&out->dev->lock);
out->dev->output_standby = false;
sp<MonoPipe> sink = out->dev->rsxSink.get();
if (sink != 0) {
if (sink->isShutdown()) {
sink.clear();
pthread_mutex_unlock(&out->dev->lock);
// the pipe has already been shutdown, this buffer will be lost but we must
// simulate timing so we don't drain the output faster than realtime
usleep(frames * 1000000 / out_get_sample_rate(&stream->common));
return bytes;
}
} else {
pthread_mutex_unlock(&out->dev->lock);
ALOGE("out_write without a pipe!");
ALOG_ASSERT("out_write without a pipe!");
return 0;
}
pthread_mutex_unlock(&out->dev->lock);
written_frames = sink->write(buffer, frames);
if (written_frames < 0) {
if (written_frames == (ssize_t)NEGOTIATE) {
ALOGE("out_write() write to pipe returned NEGOTIATE");
pthread_mutex_lock(&out->dev->lock);
sink.clear();
pthread_mutex_unlock(&out->dev->lock);
written_frames = 0;
return 0;
} else {
// write() returned UNDERRUN or WOULD_BLOCK, retry
ALOGE("out_write() write to pipe returned unexpected %16lx", written_frames);
written_frames = sink->write(buffer, frames);
}
}
pthread_mutex_lock(&out->dev->lock);
sink.clear();
pthread_mutex_unlock(&out->dev->lock);
if (written_frames < 0) {
ALOGE("out_write() failed writing to pipe with %16lx", written_frames);
return 0;
} else {
ALOGV("out_write() wrote %lu bytes)", written_frames * frame_size);
return written_frames * frame_size;
}
}
static int adev_open_output_stream(struct audio_hw_device *dev,
audio_io_handle_t handle,
audio_devices_t devices,
audio_output_flags_t flags,
struct audio_config *config,
struct audio_stream_out **stream_out)
{
struct audio_device *adev = (struct audio_device *)dev;
struct stream_out *out;
int ret;
ALOGV("%s enter card %d device %d ",__func__, adev->card, adev->device);
out = (struct stream_out *)calloc(1, sizeof(struct stream_out));
if (!out)
return -ENOMEM;
out->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
if (flags & AUDIO_OUTPUT_FLAG_DIRECT) {
ALOGV("%s: USB Audio (device mode) HD",__func__);
if (config->format == 0)
config->format = pcm_config_HD_default.format;
if (config->channel_mask == 0)
config->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
if (config->sample_rate == 0)
config->sample_rate = pcm_config_HD_default.rate;
out->pcm_config.period_size = pcm_config_HD_default.period_size;
out->flags |= flags;
} else {
ALOGV("%s: USB Audio (device mode) Stereo",__func__);
if (config->format == 0)
config->format = pcm_config_default.format;
if (config->channel_mask == 0)
config->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
if (config->sample_rate == 0)
config->sample_rate = pcm_config_default.rate;
out->pcm_config.period_size = pcm_config_default.period_size;
}
out->channel_mask = config->channel_mask;
out->pcm_config.channels = popcount(config->channel_mask);
out->pcm_config.rate = config->sample_rate;
out->pcm_config.format = config->format;
out->pcm_config.period_count = pcm_config_default.period_count;
out->stream.common.get_sample_rate = out_get_sample_rate;
out->stream.common.set_sample_rate = out_set_sample_rate;
out->stream.common.get_buffer_size = out_get_buffer_size;
out->stream.common.get_channels = out_get_channels;
out->stream.common.get_format = out_get_format;
out->stream.common.set_format = out_set_format;
out->stream.common.standby = out_standby;
out->stream.common.dump = out_dump;
out->stream.common.set_parameters = out_set_parameters;
out->stream.common.get_parameters = out_get_parameters;
out->stream.common.add_audio_effect = out_add_audio_effect;
out->stream.common.remove_audio_effect = out_remove_audio_effect;
out->stream.get_latency = out_get_latency;
out->stream.set_volume = out_set_volume;
out->stream.write = out_write;
out->stream.get_render_position = out_get_render_position;
out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
out->dev = adev;
config->format = out_get_format(&out->stream.common);
config->channel_mask = out_get_channels(&out->stream.common);
config->sample_rate = out_get_sample_rate(&out->stream.common);
out->standby = true;
adev->card = -1;
adev->device = -1;
*stream_out = &out->stream;
ALOGV("%s exit",__func__);
return 0;
}
