253 lines
7.4 KiB
C++
253 lines
7.4 KiB
C++
/*************************************************************************/
|
|
/* audio_driver_bb10.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#include "audio_driver_bb10.h"
|
|
|
|
#include <errno.h>
|
|
|
|
Error AudioDriverBB10::init() {
|
|
return init(NULL);
|
|
};
|
|
|
|
Error AudioDriverBB10::init(const char *p_name) {
|
|
|
|
active = false;
|
|
thread_exited = false;
|
|
exit_thread = false;
|
|
pcm_open = false;
|
|
samples_in = NULL;
|
|
samples_out = NULL;
|
|
|
|
mix_rate = 44100;
|
|
output_format = OUTPUT_STEREO;
|
|
|
|
char *dev_name;
|
|
if (p_name == NULL) {
|
|
dev_name = "pcmPreferred";
|
|
} else {
|
|
dev_name = (char *)p_name;
|
|
}
|
|
printf("******** reconnecting to device %s\n", dev_name);
|
|
int ret = snd_pcm_open_name(&pcm_handle, dev_name, SND_PCM_OPEN_PLAYBACK);
|
|
ERR_FAIL_COND_V(ret < 0, FAILED);
|
|
pcm_open = true;
|
|
|
|
snd_pcm_channel_info_t cinfo;
|
|
zeromem(&cinfo, sizeof(cinfo));
|
|
cinfo.channel = SND_PCM_CHANNEL_PLAYBACK;
|
|
snd_pcm_plugin_info(pcm_handle, &cinfo);
|
|
|
|
printf("rates %i, %i, %i, %i, %i\n", cinfo.rates, cinfo.rates & SND_PCM_RATE_44100, cinfo.rates & SND_PCM_RATE_32000, cinfo.rates & SND_PCM_RATE_22050, cinfo.max_rate);
|
|
|
|
mix_rate = cinfo.max_rate;
|
|
|
|
printf("formats %i, %i, %i\n", cinfo.formats, cinfo.formats & SND_PCM_FMT_S16_BE, cinfo.formats & SND_PCM_FMT_S16_LE);
|
|
ERR_FAIL_COND_V(!(cinfo.formats & SND_PCM_FMT_S16_LE), FAILED);
|
|
|
|
printf("voices %i\n", cinfo.max_voices);
|
|
output_format = cinfo.max_voices >= 2 ? OUTPUT_STEREO : OUTPUT_MONO;
|
|
|
|
snd_pcm_channel_params_t cp;
|
|
zeromem(&cp, sizeof(cp));
|
|
cp.mode = SND_PCM_MODE_BLOCK;
|
|
cp.channel = SND_PCM_CHANNEL_PLAYBACK;
|
|
cp.start_mode = SND_PCM_START_DATA;
|
|
cp.stop_mode = SND_PCM_STOP_STOP;
|
|
//cp.buf.block.frag_size = cinfo.max_fragment_size;
|
|
cp.buf.block.frag_size = 512;
|
|
cp.buf.block.frags_max = 1;
|
|
cp.buf.block.frags_min = 1;
|
|
cp.format.interleave = 1;
|
|
cp.format.rate = mix_rate;
|
|
cp.format.voices = output_format == OUTPUT_MONO ? 1 : 2;
|
|
cp.format.format = SND_PCM_SFMT_S16_LE;
|
|
|
|
ret = snd_pcm_plugin_params(pcm_handle, &cp);
|
|
printf("ret is %i, %i\n", ret, cp.why_failed);
|
|
ERR_FAIL_COND_V(ret < 0, FAILED);
|
|
|
|
ret = snd_pcm_plugin_prepare(pcm_handle, SND_PCM_CHANNEL_PLAYBACK);
|
|
ERR_FAIL_COND_V(ret < 0, FAILED);
|
|
|
|
snd_mixer_group_t group;
|
|
zeromem(&group, sizeof(group));
|
|
snd_pcm_channel_setup_t setup;
|
|
zeromem(&setup, sizeof(setup));
|
|
setup.channel = SND_PCM_CHANNEL_PLAYBACK;
|
|
setup.mode = SND_PCM_MODE_BLOCK;
|
|
setup.mixer_gid = &group.gid;
|
|
ret = snd_pcm_plugin_setup(pcm_handle, &setup);
|
|
ERR_FAIL_COND_V(ret < 0, FAILED);
|
|
|
|
pcm_frag_size = setup.buf.block.frag_size;
|
|
pcm_max_frags = 1;
|
|
|
|
sample_buf_count = pcm_frag_size * pcm_max_frags / 2;
|
|
printf("sample count %i, %i, %i\n", sample_buf_count, pcm_frag_size, pcm_max_frags);
|
|
samples_in = memnew_arr(int32_t, sample_buf_count);
|
|
samples_out = memnew_arr(int16_t, sample_buf_count);
|
|
|
|
thread = Thread::create(AudioDriverBB10::thread_func, this);
|
|
|
|
return OK;
|
|
};
|
|
|
|
void AudioDriverBB10::thread_func(void *p_udata) {
|
|
|
|
AudioDriverBB10 *ad = (AudioDriverBB10 *)p_udata;
|
|
|
|
int channels = (ad->output_format == OUTPUT_MONO ? 1 : 2);
|
|
int frame_count = ad->sample_buf_count / channels;
|
|
int bytes_out = frame_count * channels * 2;
|
|
|
|
while (!ad->exit_thread) {
|
|
|
|
if (!ad->active) {
|
|
|
|
for (int i = 0; i < ad->sample_buf_count; i++) {
|
|
|
|
ad->samples_out[i] = 0;
|
|
};
|
|
} else {
|
|
|
|
ad->lock();
|
|
|
|
ad->audio_server_process(frame_count, ad->samples_in);
|
|
|
|
ad->unlock();
|
|
|
|
for (int i = 0; i < frame_count * channels; i++) {
|
|
|
|
ad->samples_out[i] = ad->samples_in[i] >> 16;
|
|
}
|
|
};
|
|
|
|
int todo = bytes_out;
|
|
int total = 0;
|
|
|
|
while (todo) {
|
|
|
|
uint8_t *src = (uint8_t *)ad->samples_out;
|
|
int wrote = snd_pcm_plugin_write(ad->pcm_handle, (void *)(src + total), todo);
|
|
if (wrote < 0) {
|
|
// error?
|
|
break;
|
|
};
|
|
total += wrote;
|
|
todo -= wrote;
|
|
if (wrote < todo) {
|
|
if (ad->thread_exited) {
|
|
break;
|
|
};
|
|
printf("pcm_write underrun %i, errno %i\n", (int)ad->thread_exited, errno);
|
|
snd_pcm_channel_status_t status;
|
|
zeromem(&status, sizeof(status));
|
|
// put in non-blocking mode
|
|
snd_pcm_nonblock_mode(ad->pcm_handle, 1);
|
|
status.channel = SND_PCM_CHANNEL_PLAYBACK;
|
|
int ret = snd_pcm_plugin_status(ad->pcm_handle, &status);
|
|
//printf("status return %i, %i, %i, %i, %i\n", ret, errno, status.status, SND_PCM_STATUS_READY, SND_PCM_STATUS_UNDERRUN);
|
|
snd_pcm_nonblock_mode(ad->pcm_handle, 0);
|
|
if (ret < 0) {
|
|
break;
|
|
};
|
|
if (status.status == SND_PCM_STATUS_READY ||
|
|
status.status == SND_PCM_STATUS_UNDERRUN) {
|
|
snd_pcm_plugin_prepare(ad->pcm_handle, SND_PCM_CHANNEL_PLAYBACK);
|
|
} else {
|
|
break;
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|
|
snd_pcm_plugin_flush(ad->pcm_handle, SND_PCM_CHANNEL_PLAYBACK);
|
|
|
|
ad->thread_exited = true;
|
|
printf("**************** audio thread exit\n");
|
|
};
|
|
|
|
void AudioDriverBB10::start() {
|
|
|
|
active = true;
|
|
};
|
|
|
|
int AudioDriverBB10::get_mix_rate() const {
|
|
|
|
return mix_rate;
|
|
};
|
|
|
|
AudioDriverSW::OutputFormat AudioDriverBB10::get_output_format() const {
|
|
|
|
return output_format;
|
|
};
|
|
void AudioDriverBB10::lock() {
|
|
|
|
if (!thread)
|
|
return;
|
|
mutex->lock();
|
|
};
|
|
void AudioDriverBB10::unlock() {
|
|
|
|
if (!thread)
|
|
return;
|
|
mutex->unlock();
|
|
};
|
|
|
|
void AudioDriverBB10::finish() {
|
|
|
|
if (!thread)
|
|
return;
|
|
|
|
exit_thread = true;
|
|
Thread::wait_to_finish(thread);
|
|
|
|
if (pcm_open)
|
|
snd_pcm_close(pcm_handle);
|
|
|
|
if (samples_in) {
|
|
memdelete_arr(samples_in);
|
|
memdelete_arr(samples_out);
|
|
};
|
|
|
|
memdelete(thread);
|
|
thread = NULL;
|
|
};
|
|
|
|
AudioDriverBB10::AudioDriverBB10() {
|
|
|
|
mutex = Mutex::create();
|
|
};
|
|
|
|
AudioDriverBB10::~AudioDriverBB10() {
|
|
|
|
memdelete(mutex);
|
|
mutex = NULL;
|
|
};
|