c7bc44d5ad
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer with state-of-the-art rendering techniques tuned to work as low as middle end handheld devices - without compromising with the possibilities given for higher end desktop games of course. Great times ahead for the Godot community and the gamers that will play our games!
254 lines
7.3 KiB
C++
254 lines
7.3 KiB
C++
/*************************************************************************/
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/* audio_driver_bb10.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "audio_driver_bb10.h"
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#include <errno.h>
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Error AudioDriverBB10::init() {
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return init(NULL);
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};
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Error AudioDriverBB10::init(const char* p_name) {
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active=false;
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thread_exited=false;
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exit_thread=false;
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pcm_open = false;
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samples_in = NULL;
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samples_out = NULL;
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mix_rate = 44100;
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output_format = OUTPUT_STEREO;
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char* dev_name;
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if (p_name == NULL) {
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dev_name = "pcmPreferred";
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} else {
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dev_name = (char *) p_name;
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}
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printf("******** reconnecting to device %s\n", dev_name);
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int ret = snd_pcm_open_name(&pcm_handle, dev_name, SND_PCM_OPEN_PLAYBACK);
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ERR_FAIL_COND_V(ret < 0, FAILED);
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pcm_open = true;
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snd_pcm_channel_info_t cinfo;
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zeromem(&cinfo, sizeof (cinfo));
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cinfo.channel = SND_PCM_CHANNEL_PLAYBACK;
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snd_pcm_plugin_info(pcm_handle, &cinfo);
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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);
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mix_rate = cinfo.max_rate;
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printf("formats %i, %i, %i\n", cinfo.formats, cinfo.formats & SND_PCM_FMT_S16_BE, cinfo.formats & SND_PCM_FMT_S16_LE);
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ERR_FAIL_COND_V(!(cinfo.formats & SND_PCM_FMT_S16_LE), FAILED);
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printf("voices %i\n", cinfo.max_voices);
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output_format = cinfo.max_voices >= 2 ? OUTPUT_STEREO : OUTPUT_MONO;
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snd_pcm_channel_params_t cp;
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zeromem(&cp, sizeof(cp));
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cp.mode = SND_PCM_MODE_BLOCK;
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cp.channel = SND_PCM_CHANNEL_PLAYBACK;
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cp.start_mode = SND_PCM_START_DATA;
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cp.stop_mode = SND_PCM_STOP_STOP;
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//cp.buf.block.frag_size = cinfo.max_fragment_size;
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cp.buf.block.frag_size = 512;
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cp.buf.block.frags_max = 1;
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cp.buf.block.frags_min = 1;
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cp.format.interleave = 1;
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cp.format.rate = mix_rate;
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cp.format.voices = output_format == OUTPUT_MONO ? 1 : 2;
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cp.format.format = SND_PCM_SFMT_S16_LE;
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ret = snd_pcm_plugin_params(pcm_handle, &cp);
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printf("ret is %i, %i\n", ret, cp.why_failed);
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ERR_FAIL_COND_V(ret < 0, FAILED);
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ret = snd_pcm_plugin_prepare(pcm_handle, SND_PCM_CHANNEL_PLAYBACK);
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ERR_FAIL_COND_V(ret < 0, FAILED);
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snd_mixer_group_t group;
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zeromem(&group, sizeof(group));
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snd_pcm_channel_setup_t setup;
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zeromem(&setup, sizeof(setup));
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setup.channel = SND_PCM_CHANNEL_PLAYBACK;
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setup.mode = SND_PCM_MODE_BLOCK;
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setup.mixer_gid = &group.gid;
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ret = snd_pcm_plugin_setup(pcm_handle, &setup);
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ERR_FAIL_COND_V(ret < 0, FAILED);
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pcm_frag_size = setup.buf.block.frag_size;
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pcm_max_frags = 1;
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sample_buf_count = pcm_frag_size * pcm_max_frags / 2;
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printf("sample count %i, %i, %i\n", sample_buf_count, pcm_frag_size, pcm_max_frags);
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samples_in = memnew_arr(int32_t, sample_buf_count);
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samples_out = memnew_arr(int16_t, sample_buf_count);
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thread = Thread::create(AudioDriverBB10::thread_func, this);
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return OK;
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};
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void AudioDriverBB10::thread_func(void* p_udata) {
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AudioDriverBB10* ad = (AudioDriverBB10*)p_udata;
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int channels = (ad->output_format == OUTPUT_MONO ? 1 : 2);
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int frame_count = ad->sample_buf_count / channels;
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int bytes_out = frame_count * channels * 2;
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while (!ad->exit_thread) {
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if (!ad->active) {
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for (int i=0; i < ad->sample_buf_count; i++) {
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ad->samples_out[i] = 0;
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};
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} else {
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ad->lock();
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ad->audio_server_process(frame_count, ad->samples_in);
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ad->unlock();
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for(int i=0;i<frame_count*channels;i++) {
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ad->samples_out[i]=ad->samples_in[i]>>16;
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}
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};
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int todo = bytes_out;
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int total = 0;
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while (todo) {
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uint8_t* src = (uint8_t*)ad->samples_out;
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int wrote = snd_pcm_plugin_write(ad->pcm_handle, (void*)(src + total), todo);
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if (wrote < 0) {
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// error?
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break;
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};
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total += wrote;
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todo -= wrote;
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if (wrote < todo) {
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if (ad->thread_exited) {
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break;
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};
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printf("pcm_write underrun %i, errno %i\n", (int)ad->thread_exited, errno);
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snd_pcm_channel_status_t status;
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zeromem(&status, sizeof(status));
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// put in non-blocking mode
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snd_pcm_nonblock_mode(ad->pcm_handle, 1);
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status.channel = SND_PCM_CHANNEL_PLAYBACK;
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int ret = snd_pcm_plugin_status(ad->pcm_handle, &status);
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//printf("status return %i, %i, %i, %i, %i\n", ret, errno, status.status, SND_PCM_STATUS_READY, SND_PCM_STATUS_UNDERRUN);
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snd_pcm_nonblock_mode(ad->pcm_handle, 0);
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if (ret < 0) {
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break;
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};
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if (status.status == SND_PCM_STATUS_READY ||
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status.status == SND_PCM_STATUS_UNDERRUN) {
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snd_pcm_plugin_prepare(ad->pcm_handle, SND_PCM_CHANNEL_PLAYBACK);
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} else {
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break;
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};
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};
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};
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};
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snd_pcm_plugin_flush (ad->pcm_handle, SND_PCM_CHANNEL_PLAYBACK);
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ad->thread_exited=true;
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printf("**************** audio thread exit\n");
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};
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void AudioDriverBB10::start() {
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active = true;
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};
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int AudioDriverBB10::get_mix_rate() const {
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return mix_rate;
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};
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AudioDriverSW::OutputFormat AudioDriverBB10::get_output_format() const {
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return output_format;
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};
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void AudioDriverBB10::lock() {
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if (!thread)
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return;
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mutex->lock();
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};
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void AudioDriverBB10::unlock() {
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if (!thread)
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return;
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mutex->unlock();
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};
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void AudioDriverBB10::finish() {
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if (!thread)
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return;
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exit_thread = true;
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Thread::wait_to_finish(thread);
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if (pcm_open)
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snd_pcm_close(pcm_handle);
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if (samples_in) {
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memdelete_arr(samples_in);
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memdelete_arr(samples_out);
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};
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memdelete(thread);
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thread = NULL;
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};
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AudioDriverBB10::AudioDriverBB10() {
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mutex = Mutex::create();
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};
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AudioDriverBB10::~AudioDriverBB10() {
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memdelete(mutex);
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mutex = NULL;
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};
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