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RetroArch/audio/audio_driver.c
twinaphex 70b337782d Fix MSVC build
2021-10-15 00:11:52 +02:00

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/**
* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with RetroArch. If not, see <http://www.gnu.org/licenses/>.
**/
#include <math.h>
#include "audio_driver.h"
#include <string/stdstring.h>
#include <encodings/utf.h>
#include <clamping.h>
#include <retro_assert.h>
#include <memalign.h>
#include <audio/conversion/float_to_s16.h>
#include <audio/conversion/s16_to_float.h>
#ifdef HAVE_AUDIOMIXER
#include <audio/audio_mixer.h>
#include "../tasks/task_audio_mixer.h"
#endif
#ifdef HAVE_DSP_FILTER
#include <audio/dsp_filter.h>
#endif
#include <lists/dir_list.h>
#ifdef HAVE_THREADS
#include "audio_thread_wrapper.h"
#endif
#ifdef HAVE_MENU
#include "../menu/menu_driver.h"
#endif
#include "../configuration.h"
#include "../driver.h"
#include "../frontend/frontend_driver.h"
#include "../retroarch.h"
#include "../list_special.h"
#include "../file_path_special.h"
#include "../tasks/task_content.h"
#include "../verbosity.h"
#define MENU_SOUND_FORMATS "ogg|mod|xm|s3m|mp3|flac|wav"
/* Converts decibels to voltage gain. returns voltage gain value. */
#define DB_TO_GAIN(db) (powf(10.0f, (db) / 20.0f))
audio_driver_t audio_null = {
NULL, /* init */
NULL, /* write */
NULL, /* stop */
NULL, /* start */
NULL, /* alive */
NULL, /* set_nonblock_state */
NULL, /* free */
NULL, /* use_float */
"null",
NULL,
NULL,
NULL, /* write_avail */
NULL
};
audio_driver_t *audio_drivers[] = {
#ifdef HAVE_ALSA
&audio_alsa,
#if !defined(__QNX__) && defined(HAVE_THREADS)
&audio_alsathread,
#endif
#endif
#ifdef HAVE_TINYALSA
&audio_tinyalsa,
#endif
#if defined(HAVE_AUDIOIO)
&audio_audioio,
#endif
#if defined(HAVE_OSS) || defined(HAVE_OSS_BSD)
&audio_oss,
#endif
#ifdef HAVE_RSOUND
&audio_rsound,
#endif
#ifdef HAVE_COREAUDIO
&audio_coreaudio,
#endif
#ifdef HAVE_COREAUDIO3
&audio_coreaudio3,
#endif
#ifdef HAVE_AL
&audio_openal,
#endif
#ifdef HAVE_SL
&audio_opensl,
#endif
#ifdef HAVE_ROAR
&audio_roar,
#endif
#ifdef HAVE_JACK
&audio_jack,
#endif
#if defined(HAVE_SDL) || defined(HAVE_SDL2)
&audio_sdl,
#endif
#ifdef HAVE_XAUDIO
&audio_xa,
#endif
#ifdef HAVE_DSOUND
&audio_dsound,
#endif
#ifdef HAVE_WASAPI
&audio_wasapi,
#endif
#ifdef HAVE_PULSE
&audio_pulse,
#endif
#if defined(__PSL1GHT__) || defined(__PS3__)
&audio_ps3,
#endif
#ifdef XENON
&audio_xenon360,
#endif
#ifdef GEKKO
&audio_gx,
#endif
#ifdef WIIU
&audio_ax,
#endif
#ifdef EMSCRIPTEN
&audio_rwebaudio,
#endif
#if defined(PSP) || defined(VITA) || defined(ORBIS)
&audio_psp,
#endif
#if defined(PS2)
&audio_ps2,
#endif
#ifdef _3DS
&audio_ctr_csnd,
&audio_ctr_dsp,
#ifdef HAVE_THREADS
&audio_ctr_dsp_thread,
#endif
#endif
#ifdef SWITCH
&audio_switch,
&audio_switch_thread,
#ifdef HAVE_LIBNX
&audio_switch_libnx_audren,
&audio_switch_libnx_audren_thread,
#endif
#endif
&audio_null,
NULL,
};
static audio_driver_state_t audio_driver_st = {0}; /* double alignment */
/**************************************/
audio_driver_state_t *audio_state_get_ptr(void)
{
return &audio_driver_st;
}
#ifdef HAVE_TRANSLATE
/* TODO/FIXME - Doesn't currently work. Fix this. */
bool audio_driver_is_ai_service_speech_running(void)
{
#ifdef HAVE_AUDIOMIXER
enum audio_mixer_state res = audio_driver_mixer_get_stream_state(10);
bool ret = (res == AUDIO_STREAM_STATE_NONE) || (res == AUDIO_STREAM_STATE_STOPPED);
if (!ret)
return true;
#endif
return false;
}
#endif
static enum resampler_quality audio_driver_get_resampler_quality(
settings_t *settings)
{
if (settings)
return (enum resampler_quality)settings->uints.audio_resampler_quality;
return RESAMPLER_QUALITY_DONTCARE;
}
static bool audio_driver_free_devices_list(void)
{
audio_driver_state_t *audio_st = &audio_driver_st;
if (
!audio_st->current_audio
|| !audio_st->current_audio->device_list_free
|| !audio_st->context_audio_data)
return false;
audio_st->current_audio->device_list_free(
audio_st->context_audio_data,
audio_st->devices_list);
audio_st->devices_list = NULL;
return true;
}
#ifdef DEBUG
static void report_audio_buffer_statistics(void)
{
audio_statistics_t audio_stats;
audio_stats.samples = 0;
audio_stats.average_buffer_saturation = 0.0f;
audio_stats.std_deviation_percentage = 0.0f;
audio_stats.close_to_underrun = 0.0f;
audio_stats.close_to_blocking = 0.0f;
if (!audio_compute_buffer_statistics(&audio_stats))
return;
RARCH_LOG("[Audio]: Average audio buffer saturation: %.2f %%,"
" standard deviation (percentage points): %.2f %%.\n"
"[Audio]: Amount of time spent close to underrun: %.2f %%."
" Close to blocking: %.2f %%.\n",
audio_stats.average_buffer_saturation,
audio_stats.std_deviation_percentage,
audio_stats.close_to_underrun,
audio_stats.close_to_blocking);
}
#endif
static void audio_driver_deinit_resampler(void)
{
audio_driver_state_t *audio_st = &audio_driver_st;
if (audio_st->resampler && audio_st->resampler_data)
audio_st->resampler->free(audio_st->resampler_data);
audio_st->resampler = NULL;
audio_st->resampler_data = NULL;
audio_st->resampler_ident[0] = '\0';
audio_st->resampler_quality = RESAMPLER_QUALITY_DONTCARE;
}
static bool audio_driver_deinit_internal(bool audio_enable)
{
audio_driver_state_t *audio_st = &audio_driver_st;
if ( audio_st->current_audio
&& audio_st->current_audio->free)
{
if (audio_st->context_audio_data)
audio_st->current_audio->free(audio_st->context_audio_data);
audio_st->context_audio_data = NULL;
}
if (audio_st->output_samples_conv_buf)
memalign_free(audio_st->output_samples_conv_buf);
audio_st->output_samples_conv_buf = NULL;
if (audio_st->input_data)
memalign_free(audio_st->input_data);
audio_st->input_data = NULL;
audio_st->data_ptr = 0;
#ifdef HAVE_REWIND
if (audio_st->rewind_buf)
memalign_free(audio_st->rewind_buf);
audio_st->rewind_buf = NULL;
audio_st->rewind_size = 0;
#endif
if (!audio_enable)
{
audio_st->active = false;
return false;
}
audio_driver_deinit_resampler();
if (audio_st->output_samples_buf)
memalign_free(audio_st->output_samples_buf);
audio_st->output_samples_buf = NULL;
#ifdef HAVE_DSP_FILTER
audio_driver_dsp_filter_free();
#endif
#ifdef DEBUG
report_audio_buffer_statistics();
#endif
return true;
}
#ifdef HAVE_AUDIOMIXER
static void audio_driver_mixer_deinit(void)
{
unsigned i;
audio_driver_st.mixer_active = false;
for (i = 0; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
{
audio_driver_mixer_stop_stream(i);
audio_driver_mixer_remove_stream(i);
}
audio_mixer_done();
}
#endif
bool audio_driver_deinit(void *settings_data)
{
settings_t *settings = (settings_t*)settings_data;
#ifdef HAVE_AUDIOMIXER
audio_driver_mixer_deinit();
#endif
audio_driver_free_devices_list();
return audio_driver_deinit_internal(
settings->bools.audio_enable);
}
bool audio_driver_find_driver(
void *settings_data,
const char *prefix,
bool verbosity_enabled)
{
settings_t *settings = (settings_t*)settings_data;
int i = (int)driver_find_index(
"audio_driver",
settings->arrays.audio_driver);
if (i >= 0)
audio_driver_st.current_audio = (const audio_driver_t*)
audio_drivers[i];
else
{
const audio_driver_t *tmp = NULL;
if (verbosity_enabled)
{
unsigned d;
RARCH_ERR("Couldn't find any %s named \"%s\"\n", prefix,
settings->arrays.audio_driver);
RARCH_LOG_OUTPUT("Available %ss are:\n", prefix);
for (d = 0; audio_drivers[d]; d++)
{
if (audio_drivers[d])
RARCH_LOG_OUTPUT("\t%s\n", audio_drivers[d]->ident);
}
RARCH_WARN("Going to default to first %s...\n", prefix);
}
tmp = (const audio_driver_t*)audio_drivers[0];
if (!tmp)
return false;
audio_driver_st.current_audio = tmp;
}
return true;
}
/**
* audio_driver_flush:
* @data : pointer to audio buffer.
* @right : amount of samples to write.
*
* Writes audio samples to audio driver. Will first
* perform DSP processing (if enabled) and resampling.
**/
static void audio_driver_flush(
audio_driver_state_t *audio_st,
float slowmotion_ratio,
bool audio_fastforward_mute,
const int16_t *data, size_t samples,
bool is_slowmotion, bool is_fastmotion)
{
struct resampler_data src_data;
float audio_volume_gain = (audio_st->mute_enable ||
(audio_fastforward_mute && is_fastmotion))
? 0.0f
: audio_st->volume_gain;
src_data.data_out = NULL;
src_data.output_frames = 0;
convert_s16_to_float(audio_st->input_data, data, samples,
audio_volume_gain);
src_data.data_in = audio_st->input_data;
src_data.input_frames = samples >> 1;
#ifdef HAVE_DSP_FILTER
if (audio_st->dsp)
{
struct retro_dsp_data dsp_data;
dsp_data.input = NULL;
dsp_data.input_frames = 0;
dsp_data.output = NULL;
dsp_data.output_frames = 0;
dsp_data.input = audio_st->input_data;
dsp_data.input_frames = (unsigned)(samples >> 1);
retro_dsp_filter_process(audio_st->dsp, &dsp_data);
if (dsp_data.output)
{
src_data.data_in = dsp_data.output;
src_data.input_frames = dsp_data.output_frames;
}
}
#endif
src_data.data_out = audio_st->output_samples_buf;
if (audio_st->control)
{
/* Readjust the audio input rate. */
int half_size = (int)(audio_st->buffer_size / 2);
int avail =
(int)audio_st->current_audio->write_avail(
audio_st->context_audio_data);
int delta_mid = avail - half_size;
double direction = (double)delta_mid / half_size;
double adjust = 1.0 +
audio_st->rate_control_delta * direction;
unsigned write_idx =
audio_st->free_samples_count++ &
(AUDIO_BUFFER_FREE_SAMPLES_COUNT - 1);
audio_st->free_samples_buf[write_idx] = avail;
audio_st->source_ratio_current =
audio_st->source_ratio_original * adjust;
#if 0
if (verbosity_is_enabled())
{
RARCH_LOG_OUTPUT("[Audio]: Audio buffer is %u%% full\n",
(unsigned)(100 - (avail * 100) /
audio_st->buffer_size));
RARCH_LOG_OUTPUT("[Audio]: New rate: %lf, Orig rate: %lf\n",
audio_st->source_ratio_current,
audio_st->source_ratio_original);
}
#endif
}
src_data.ratio = audio_st->source_ratio_current;
if (is_slowmotion)
src_data.ratio *= slowmotion_ratio;
/* Note: Ideally we would divide by the user-configured
* 'fastforward_ratio' when fast forward is enabled,
* but in practice this doesn't work:
* - 'fastforward_ratio' is only a limit. If the host
* cannot push frames fast enough, the actual ratio
* will be lower - and crackling will ensue
* - Most of the time 'fastforward_ratio' will be
* zero (unlimited)
* So what we would need to do is measure the time since
* the last audio flush operation, and calculate a 'real'
* fast-forward ratio - but this doesn't work either.
* The measurement is inaccurate and the frame-by-frame
* fluctuations are too large, so crackling is unavoidable.
* Since it's going to crackle anyway, there's no point
* trying to do anything. Just leave the ratio as-is,
* and hope for the best... */
audio_st->resampler->process(
audio_st->resampler_data, &src_data);
#ifdef HAVE_AUDIOMIXER
if (audio_st->mixer_active)
{
bool override = true;
float mixer_gain = 0.0f;
bool audio_driver_mixer_mute_enable = audio_st->mixer_mute_enable;
if (!audio_driver_mixer_mute_enable)
{
if (audio_st->mixer_volume_gain == 1.0f)
override = false;
mixer_gain = audio_st->mixer_volume_gain;
}
audio_mixer_mix(audio_st->output_samples_buf,
src_data.output_frames, mixer_gain, override);
}
#endif
{
const void *output_data = audio_st->output_samples_buf;
unsigned output_frames = (unsigned)src_data.output_frames;
if (audio_st->use_float)
output_frames *= sizeof(float);
else
{
convert_float_to_s16(audio_st->output_samples_conv_buf,
(const float*)output_data, output_frames * 2);
output_data = audio_st->output_samples_conv_buf;
output_frames *= sizeof(int16_t);
}
audio_st->current_audio->write(audio_st->context_audio_data,
output_data, output_frames * 2);
}
}
#ifdef HAVE_AUDIOMIXER
audio_mixer_stream_t *audio_driver_mixer_get_stream(unsigned i)
{
if (i > (AUDIO_MIXER_MAX_SYSTEM_STREAMS-1))
return NULL;
return &audio_driver_st.mixer_streams[i];
}
const char *audio_driver_mixer_get_stream_name(unsigned i)
{
if (i > (AUDIO_MIXER_MAX_SYSTEM_STREAMS-1))
return msg_hash_to_str(MENU_ENUM_LABEL_VALUE_NOT_AVAILABLE);
if (!string_is_empty(audio_driver_st.mixer_streams[i].name))
return audio_driver_st.mixer_streams[i].name;
return msg_hash_to_str(MENU_ENUM_LABEL_VALUE_NOT_AVAILABLE);
}
#endif
bool audio_driver_init_internal(
void *settings_data,
bool audio_cb_inited)
{
unsigned new_rate = 0;
float *samples_buf = NULL;
settings_t *settings = (settings_t*)settings_data;
size_t max_bufsamples = AUDIO_CHUNK_SIZE_NONBLOCKING * 2;
bool audio_enable = settings->bools.audio_enable;
bool audio_sync = settings->bools.audio_sync;
bool audio_rate_control = settings->bools.audio_rate_control;
float slowmotion_ratio = settings->floats.slowmotion_ratio;
runloop_state_t *runloop_st = runloop_state_get_ptr();
unsigned audio_latency = (runloop_st->audio_latency > settings->uints.audio_latency) ?
runloop_st->audio_latency : settings->uints.audio_latency;
#ifdef HAVE_REWIND
int16_t *rewind_buf = NULL;
#endif
/* Accomodate rewind since at some point we might have two full buffers. */
size_t outsamples_max = AUDIO_CHUNK_SIZE_NONBLOCKING * 2 * AUDIO_MAX_RATIO * slowmotion_ratio;
int16_t *conv_buf = (int16_t*)memalign_alloc(64, outsamples_max * sizeof(int16_t));
float *audio_buf = (float*)memalign_alloc(64, AUDIO_CHUNK_SIZE_NONBLOCKING * 2 * sizeof(float));
bool verbosity_enabled = verbosity_is_enabled();
convert_s16_to_float_init_simd();
convert_float_to_s16_init_simd();
/* Used for recording even if audio isn't enabled. */
retro_assert(conv_buf != NULL);
retro_assert(audio_buf != NULL);
if (!conv_buf || !audio_buf)
goto error;
memset(audio_buf, 0, AUDIO_CHUNK_SIZE_NONBLOCKING * 2 * sizeof(float));
audio_driver_st.input_data = audio_buf;
audio_driver_st.output_samples_conv_buf = conv_buf;
audio_driver_st.chunk_block_size = AUDIO_CHUNK_SIZE_BLOCKING;
audio_driver_st.chunk_nonblock_size = AUDIO_CHUNK_SIZE_NONBLOCKING;
audio_driver_st.chunk_size = audio_driver_st.chunk_block_size;
#ifdef HAVE_REWIND
/* Needs to be able to hold full content of a full max_bufsamples
* in addition to its own. */
rewind_buf = (int16_t*)memalign_alloc(64, max_bufsamples * sizeof(int16_t));
retro_assert(rewind_buf != NULL);
if (!rewind_buf)
goto error;
audio_driver_st.rewind_buf = rewind_buf;
audio_driver_st.rewind_size = max_bufsamples;
#endif
if (!audio_enable)
{
audio_driver_st.active = false;
return false;
}
if (!(audio_driver_find_driver(settings,
"audio driver", verbosity_enabled)))
{
RARCH_ERR("Failed to initialize audio driver.\n");
return false;
}
if (!audio_driver_st.current_audio || !audio_driver_st.current_audio->init)
{
RARCH_ERR("Failed to initialize audio driver. Will continue without audio.\n");
audio_driver_st.active = false;
return false;
}
#ifdef HAVE_THREADS
if (audio_cb_inited)
{
RARCH_LOG("[Audio]: Starting threaded audio driver ...\n");
if (!audio_init_thread(
&audio_driver_st.current_audio,
&audio_driver_st.context_audio_data,
*settings->arrays.audio_device
? settings->arrays.audio_device : NULL,
settings->uints.audio_output_sample_rate, &new_rate,
audio_latency,
settings->uints.audio_block_frames,
audio_driver_st.current_audio))
{
RARCH_ERR("Cannot open threaded audio driver ... Exiting ...\n");
return false;
}
}
else
#endif
{
audio_driver_st.context_audio_data =
audio_driver_st.current_audio->init(*settings->arrays.audio_device ?
settings->arrays.audio_device : NULL,
settings->uints.audio_output_sample_rate,
audio_latency,
settings->uints.audio_block_frames,
&new_rate);
}
if (new_rate != 0)
configuration_set_int(settings, settings->uints.audio_output_sample_rate, new_rate);
if (!audio_driver_st.context_audio_data)
{
RARCH_ERR("Failed to initialize audio driver. Will continue without audio.\n");
audio_driver_st.active = false;
}
audio_driver_st.use_float = false;
if ( audio_driver_st.active
&& audio_driver_st.current_audio->use_float(
audio_driver_st.context_audio_data))
audio_driver_st.use_float = true;
if (!audio_sync && audio_driver_st.active)
{
if (audio_driver_st.active &&
audio_driver_st.context_audio_data)
audio_driver_st.current_audio->set_nonblock_state(
audio_driver_st.context_audio_data, true);
audio_driver_st.chunk_size =
audio_driver_st.chunk_nonblock_size;
}
if (audio_driver_st.input <= 0.0f)
{
/* Should never happen. */
RARCH_WARN("[Audio]: Input rate is invalid (%.3f Hz)."
" Using output rate (%u Hz).\n",
audio_driver_st.input, settings->uints.audio_output_sample_rate);
audio_driver_st.input = settings->uints.audio_output_sample_rate;
}
audio_driver_st.source_ratio_original =
audio_driver_st.source_ratio_current =
(double)settings->uints.audio_output_sample_rate / audio_driver_st.input;
if (!string_is_empty(settings->arrays.audio_resampler))
strlcpy(audio_driver_st.resampler_ident,
settings->arrays.audio_resampler,
sizeof(audio_driver_st.resampler_ident));
else
audio_driver_st.resampler_ident[0] = '\0';
audio_driver_st.resampler_quality =
audio_driver_get_resampler_quality(settings);
if (!retro_resampler_realloc(
&audio_driver_st.resampler_data,
&audio_driver_st.resampler,
audio_driver_st.resampler_ident,
audio_driver_st.resampler_quality,
audio_driver_st.source_ratio_original))
{
RARCH_ERR("Failed to initialize resampler \"%s\".\n",
audio_driver_st.resampler_ident);
audio_driver_st.active = false;
}
audio_driver_st.data_ptr = 0;
retro_assert(settings->uints.audio_output_sample_rate <
audio_driver_st.input * AUDIO_MAX_RATIO);
samples_buf = (float*)memalign_alloc(64, outsamples_max * sizeof(float));
retro_assert(samples_buf != NULL);
if (!samples_buf)
goto error;
audio_driver_st.output_samples_buf = (float*)samples_buf;
audio_driver_st.control = false;
if (
!audio_cb_inited
&& audio_driver_st.active
&& audio_rate_control
)
{
/* Audio rate control requires write_avail
* and buffer_size to be implemented. */
if (audio_driver_st.current_audio->buffer_size)
{
audio_driver_st.buffer_size =
audio_driver_st.current_audio->buffer_size(
audio_driver_st.context_audio_data);
audio_driver_st.control = true;
}
else
RARCH_WARN("[Audio]: Rate control was desired, but driver does not support needed features.\n");
}
command_event(CMD_EVENT_DSP_FILTER_INIT, NULL);
audio_driver_st.free_samples_count = 0;
#ifdef HAVE_AUDIOMIXER
audio_mixer_init(settings->uints.audio_output_sample_rate);
#endif
/* Threaded driver is initially stopped. */
if (
audio_driver_st.active
&& audio_cb_inited
)
audio_driver_start(false);
return true;
error:
return audio_driver_deinit(settings);
}
void audio_driver_sample(int16_t left, int16_t right)
{
audio_driver_state_t *audio_st = &audio_driver_st;
recording_state_t *recording_st = NULL;
runloop_state_t *runloop_st = NULL;
if (audio_st->suspended)
return;
audio_st->output_samples_conv_buf[audio_st->data_ptr++] = left;
audio_st->output_samples_conv_buf[audio_st->data_ptr++] = right;
if (audio_st->data_ptr < audio_st->chunk_size)
return;
runloop_st = runloop_state_get_ptr();
recording_st = recording_state_get_ptr();
if ( recording_st->data &&
recording_st->driver &&
recording_st->driver->push_audio)
{
struct record_audio_data ffemu_data;
ffemu_data.data = audio_st->output_samples_conv_buf;
ffemu_data.frames = audio_st->data_ptr / 2;
recording_st->driver->push_audio(recording_st->data, &ffemu_data);
}
if (!( runloop_st->paused
|| !audio_st->active
|| !audio_st->output_samples_buf))
audio_driver_flush(audio_st,
config_get_ptr()->floats.slowmotion_ratio,
config_get_ptr()->bools.audio_fastforward_mute,
audio_st->output_samples_conv_buf,
audio_st->data_ptr,
runloop_st->slowmotion,
runloop_st->fastmotion);
audio_st->data_ptr = 0;
}
size_t audio_driver_sample_batch(const int16_t *data, size_t frames)
{
recording_state_t *record_st = recording_state_get_ptr();
runloop_state_t *runloop_st = runloop_state_get_ptr();
audio_driver_state_t *audio_st = &audio_driver_st;
if (frames > (AUDIO_CHUNK_SIZE_NONBLOCKING >> 1))
frames = AUDIO_CHUNK_SIZE_NONBLOCKING >> 1;
if (audio_st->suspended)
return frames;
if ( record_st->data
&& record_st->driver
&& record_st->driver->push_audio)
{
struct record_audio_data ffemu_data;
ffemu_data.data = data;
ffemu_data.frames = (frames << 1) / 2;
record_st->driver->push_audio(record_st->data, &ffemu_data);
}
if (!(
runloop_st->paused
|| !audio_st->active
|| !audio_st->output_samples_buf))
audio_driver_flush(audio_st,
config_get_ptr()->floats.slowmotion_ratio,
config_get_ptr()->bools.audio_fastforward_mute,
data,
frames << 1,
runloop_st->slowmotion,
runloop_st->fastmotion);
return frames;
}
#ifdef HAVE_REWIND
void audio_driver_sample_rewind(int16_t left, int16_t right)
{
audio_driver_state_t *audio_st = &audio_driver_st;
if (audio_st->rewind_ptr == 0)
return;
audio_st->rewind_buf[--audio_st->rewind_ptr] = right;
audio_st->rewind_buf[--audio_st->rewind_ptr] = left;
}
size_t audio_driver_sample_batch_rewind(
const int16_t *data, size_t frames)
{
size_t i;
audio_driver_state_t *audio_st = &audio_driver_st;
size_t samples = frames << 1;
for (i = 0; i < samples; i++)
{
if (audio_st->rewind_ptr > 0)
audio_st->rewind_buf[--audio_st->rewind_ptr] = data[i];
}
return frames;
}
#endif
#ifdef HAVE_DSP_FILTER
void audio_driver_dsp_filter_free(void)
{
audio_driver_state_t *audio_st = &audio_driver_st;
if (audio_st->dsp)
retro_dsp_filter_free(audio_st->dsp);
audio_st->dsp = NULL;
}
bool audio_driver_dsp_filter_init(const char *device)
{
retro_dsp_filter_t *audio_driver_dsp = NULL;
struct string_list *plugs = NULL;
#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
char basedir[PATH_MAX_LENGTH];
char ext_name[PATH_MAX_LENGTH];
basedir[0] = ext_name[0] = '\0';
fill_pathname_basedir(basedir, device, sizeof(basedir));
if (!frontend_driver_get_core_extension(ext_name, sizeof(ext_name)))
return false;
plugs = dir_list_new(basedir, ext_name, false, true, false, false);
if (!plugs)
return false;
#endif
audio_driver_dsp = retro_dsp_filter_new(
device, plugs, audio_driver_st.input);
if (!audio_driver_dsp)
return false;
audio_driver_st.dsp = audio_driver_dsp;
return true;
}
#endif
void audio_driver_set_buffer_size(size_t bufsize)
{
audio_driver_st.buffer_size = bufsize;
}
float audio_driver_monitor_adjust_system_rates(
double input_sample_rate,
double input_fps,
float video_refresh_rate,
unsigned video_swap_interval,
float audio_max_timing_skew)
{
float inp_sample_rate = input_sample_rate;
const float target_video_sync_rate = video_refresh_rate
/ video_swap_interval;
float timing_skew =
fabs(1.0f - input_fps / target_video_sync_rate);
if (timing_skew <= audio_max_timing_skew)
return (inp_sample_rate * target_video_sync_rate / input_fps);
return inp_sample_rate;
}
#ifdef HAVE_REWIND
void audio_driver_setup_rewind(void)
{
unsigned i;
audio_driver_state_t *audio_st = &audio_driver_st;
/* Push audio ready to be played. */
audio_st->rewind_ptr = audio_st->rewind_size;
for (i = 0; i < audio_st->data_ptr; i += 2)
{
if (audio_st->rewind_ptr > 0)
audio_st->rewind_buf[--audio_st->rewind_ptr] =
audio_st->output_samples_conv_buf[i + 1];
if (audio_st->rewind_ptr > 0)
audio_st->rewind_buf[--audio_st->rewind_ptr] =
audio_st->output_samples_conv_buf[i + 0];
}
audio_st->data_ptr = 0;
}
#endif
bool audio_driver_get_devices_list(void **data)
{
struct string_list**ptr = (struct string_list**)data;
if (!ptr)
return false;
*ptr = audio_driver_st.devices_list;
return true;
}
#ifdef HAVE_AUDIOMIXER
bool audio_driver_mixer_extension_supported(const char *ext)
{
unsigned i;
struct string_list str_list;
union string_list_elem_attr attr;
bool ret = false;
attr.i = 0;
if (!string_list_initialize(&str_list))
return false;
#ifdef HAVE_STB_VORBIS
string_list_append(&str_list, "ogg", attr);
#endif
#ifdef HAVE_IBXM
string_list_append(&str_list, "mod", attr);
string_list_append(&str_list, "s3m", attr);
string_list_append(&str_list, "xm", attr);
#endif
#ifdef HAVE_DR_FLAC
string_list_append(&str_list, "flac", attr);
#endif
#ifdef HAVE_DR_MP3
string_list_append(&str_list, "mp3", attr);
#endif
string_list_append(&str_list, "wav", attr);
for (i = 0; i < str_list.size; i++)
{
const char *str_ext = str_list.elems[i].data;
if (string_is_equal_noncase(str_ext, ext))
{
ret = true;
break;
}
}
string_list_deinitialize(&str_list);
return ret;
}
static int audio_mixer_find_index(
audio_mixer_sound_t *sound)
{
unsigned i;
for (i = 0; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
{
audio_mixer_sound_t *handle = audio_driver_st.mixer_streams[i].handle;
if (handle == sound)
return i;
}
return -1;
}
static void audio_mixer_play_stop_cb(
audio_mixer_sound_t *sound, unsigned reason)
{
int idx = audio_mixer_find_index(sound);
switch (reason)
{
case AUDIO_MIXER_SOUND_FINISHED:
audio_mixer_destroy(sound);
if (idx >= 0)
{
unsigned i = (unsigned)idx;
if (!string_is_empty(audio_driver_st.mixer_streams[i].name))
free(audio_driver_st.mixer_streams[i].name);
audio_driver_st.mixer_streams[i].name = NULL;
audio_driver_st.mixer_streams[i].state = AUDIO_STREAM_STATE_NONE;
audio_driver_st.mixer_streams[i].volume = 0.0f;
audio_driver_st.mixer_streams[i].buf = NULL;
audio_driver_st.mixer_streams[i].stop_cb = NULL;
audio_driver_st.mixer_streams[i].handle = NULL;
audio_driver_st.mixer_streams[i].voice = NULL;
}
break;
case AUDIO_MIXER_SOUND_STOPPED:
break;
case AUDIO_MIXER_SOUND_REPEATED:
break;
}
}
static void audio_mixer_menu_stop_cb(
audio_mixer_sound_t *sound, unsigned reason)
{
int idx = audio_mixer_find_index(sound);
switch (reason)
{
case AUDIO_MIXER_SOUND_FINISHED:
if (idx >= 0)
{
unsigned i = (unsigned)idx;
audio_driver_st.mixer_streams[i].state = AUDIO_STREAM_STATE_STOPPED;
audio_driver_st.mixer_streams[i].volume = 0.0f;
}
break;
case AUDIO_MIXER_SOUND_STOPPED:
break;
case AUDIO_MIXER_SOUND_REPEATED:
break;
}
}
static void audio_mixer_play_stop_sequential_cb(
audio_mixer_sound_t *sound, unsigned reason)
{
int idx = audio_mixer_find_index(sound);
switch (reason)
{
case AUDIO_MIXER_SOUND_FINISHED:
audio_mixer_destroy(sound);
if (idx >= 0)
{
unsigned i = (unsigned)idx;
if (!string_is_empty(audio_driver_st.mixer_streams[i].name))
free(audio_driver_st.mixer_streams[i].name);
if (i < AUDIO_MIXER_MAX_STREAMS)
audio_driver_st.mixer_streams[i].stream_type = AUDIO_STREAM_TYPE_USER;
else
audio_driver_st.mixer_streams[i].stream_type = AUDIO_STREAM_TYPE_SYSTEM;
audio_driver_st.mixer_streams[i].name = NULL;
audio_driver_st.mixer_streams[i].state = AUDIO_STREAM_STATE_NONE;
audio_driver_st.mixer_streams[i].volume = 0.0f;
audio_driver_st.mixer_streams[i].buf = NULL;
audio_driver_st.mixer_streams[i].stop_cb = NULL;
audio_driver_st.mixer_streams[i].handle = NULL;
audio_driver_st.mixer_streams[i].voice = NULL;
i++;
for (; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
{
if (audio_driver_st.mixer_streams[i].state
== AUDIO_STREAM_STATE_STOPPED)
{
audio_driver_mixer_play_stream_sequential(i);
break;
}
}
}
break;
case AUDIO_MIXER_SOUND_STOPPED:
break;
case AUDIO_MIXER_SOUND_REPEATED:
break;
}
}
static bool audio_driver_mixer_get_free_stream_slot(
unsigned *id, enum audio_mixer_stream_type type)
{
unsigned i = AUDIO_MIXER_MAX_STREAMS;
unsigned count = AUDIO_MIXER_MAX_SYSTEM_STREAMS;
if (type == AUDIO_STREAM_TYPE_USER)
{
i = 0;
count = AUDIO_MIXER_MAX_STREAMS;
}
for (; i < count; i++)
{
if (audio_driver_st.mixer_streams[i].state == AUDIO_STREAM_STATE_NONE)
{
*id = i;
return true;
}
}
return false;
}
bool audio_driver_mixer_add_stream(audio_mixer_stream_params_t *params)
{
unsigned free_slot = 0;
audio_mixer_voice_t *voice = NULL;
audio_mixer_sound_t *handle = NULL;
audio_mixer_stop_cb_t stop_cb = audio_mixer_play_stop_cb;
bool looped = false;
void *buf = NULL;
if (params->stream_type == AUDIO_STREAM_TYPE_NONE)
return false;
switch (params->slot_selection_type)
{
case AUDIO_MIXER_SLOT_SELECTION_MANUAL:
free_slot = params->slot_selection_idx;
/* If we are using a manually specified
* slot, must free any existing stream
* before assigning the new one */
audio_driver_mixer_stop_stream(free_slot);
audio_driver_mixer_remove_stream(free_slot);
break;
case AUDIO_MIXER_SLOT_SELECTION_AUTOMATIC:
default:
if (!audio_driver_mixer_get_free_stream_slot(
&free_slot, params->stream_type))
return false;
break;
}
if (params->state == AUDIO_STREAM_STATE_NONE)
return false;
buf = malloc(params->bufsize);
if (!buf)
return false;
memcpy(buf, params->buf, params->bufsize);
switch (params->type)
{
case AUDIO_MIXER_TYPE_WAV:
handle = audio_mixer_load_wav(buf, (int32_t)params->bufsize,
audio_driver_st.resampler_ident,
audio_driver_st.resampler_quality);
/* WAV is a special case - input buffer is not
* free()'d when sound playback is complete (it is
* converted to a PCM buffer, which is free()'d instead),
* so have to do it here */
free(buf);
buf = NULL;
break;
case AUDIO_MIXER_TYPE_OGG:
handle = audio_mixer_load_ogg(buf, (int32_t)params->bufsize);
break;
case AUDIO_MIXER_TYPE_MOD:
handle = audio_mixer_load_mod(buf, (int32_t)params->bufsize);
break;
case AUDIO_MIXER_TYPE_FLAC:
#ifdef HAVE_DR_FLAC
handle = audio_mixer_load_flac(buf, (int32_t)params->bufsize);
#endif
break;
case AUDIO_MIXER_TYPE_MP3:
#ifdef HAVE_DR_MP3
handle = audio_mixer_load_mp3(buf, (int32_t)params->bufsize);
#endif
break;
case AUDIO_MIXER_TYPE_NONE:
break;
}
if (!handle)
{
free(buf);
return false;
}
switch (params->state)
{
case AUDIO_STREAM_STATE_PLAYING_LOOPED:
looped = true;
voice = audio_mixer_play(handle, looped, params->volume,
audio_driver_st.resampler_ident,
audio_driver_st.resampler_quality, stop_cb);
break;
case AUDIO_STREAM_STATE_PLAYING:
voice = audio_mixer_play(handle, looped, params->volume,
audio_driver_st.resampler_ident,
audio_driver_st.resampler_quality, stop_cb);
break;
case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
stop_cb = audio_mixer_play_stop_sequential_cb;
voice = audio_mixer_play(handle, looped, params->volume,
audio_driver_st.resampler_ident,
audio_driver_st.resampler_quality, stop_cb);
break;
default:
break;
}
audio_driver_st.mixer_active = true;
audio_driver_st.mixer_streams[free_slot].name =
!string_is_empty(params->basename) ? strdup(params->basename) : NULL;
audio_driver_st.mixer_streams[free_slot].buf = buf;
audio_driver_st.mixer_streams[free_slot].handle = handle;
audio_driver_st.mixer_streams[free_slot].voice = voice;
audio_driver_st.mixer_streams[free_slot].stream_type = params->stream_type;
audio_driver_st.mixer_streams[free_slot].type = params->type;
audio_driver_st.mixer_streams[free_slot].state = params->state;
audio_driver_st.mixer_streams[free_slot].volume = params->volume;
audio_driver_st.mixer_streams[free_slot].stop_cb = stop_cb;
return true;
}
enum audio_mixer_state audio_driver_mixer_get_stream_state(unsigned i)
{
if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
return AUDIO_STREAM_STATE_NONE;
return audio_driver_st.mixer_streams[i].state;
}
static void audio_driver_mixer_play_stream_internal(
unsigned i, unsigned type)
{
if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
return;
switch (audio_driver_st.mixer_streams[i].state)
{
case AUDIO_STREAM_STATE_STOPPED:
audio_driver_st.mixer_streams[i].voice =
audio_mixer_play(audio_driver_st.mixer_streams[i].handle,
(type == AUDIO_STREAM_STATE_PLAYING_LOOPED) ? true : false,
1.0f, audio_driver_st.resampler_ident,
audio_driver_st.resampler_quality,
audio_driver_st.mixer_streams[i].stop_cb);
audio_driver_st.mixer_streams[i].state = (enum audio_mixer_state)type;
break;
case AUDIO_STREAM_STATE_PLAYING:
case AUDIO_STREAM_STATE_PLAYING_LOOPED:
case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
case AUDIO_STREAM_STATE_NONE:
break;
}
}
static void audio_driver_load_menu_bgm_callback(retro_task_t *task,
void *task_data, void *user_data, const char *error)
{
bool contentless = false;
bool is_inited = false;
content_get_status(&contentless, &is_inited);
if (!is_inited)
audio_driver_mixer_play_menu_sound_looped(AUDIO_MIXER_SYSTEM_SLOT_BGM);
}
void audio_driver_load_system_sounds(void)
{
char sounds_path[PATH_MAX_LENGTH];
char sounds_fallback_path[PATH_MAX_LENGTH];
char basename_noext[PATH_MAX_LENGTH];
settings_t *settings = config_get_ptr();
const char *dir_assets = settings->paths.directory_assets;
const bool audio_enable_menu = settings->bools.audio_enable_menu;
const bool audio_enable_menu_ok = audio_enable_menu && settings->bools.audio_enable_menu_ok;
const bool audio_enable_menu_cancel = audio_enable_menu && settings->bools.audio_enable_menu_cancel;
const bool audio_enable_menu_notice = audio_enable_menu && settings->bools.audio_enable_menu_notice;
const bool audio_enable_menu_bgm = audio_enable_menu && settings->bools.audio_enable_menu_bgm;
const bool audio_enable_cheevo_unlock = settings->bools.cheevos_unlock_sound_enable;
const char *path_ok = NULL;
const char *path_cancel = NULL;
const char *path_notice = NULL;
const char *path_bgm = NULL;
const char *path_cheevo_unlock = NULL;
struct string_list *list = NULL;
struct string_list *list_fallback = NULL;
unsigned i = 0;
if (!audio_enable_menu && !audio_enable_cheevo_unlock)
goto end;
sounds_path[0] = sounds_fallback_path[0] =
basename_noext[0] ='\0';
fill_pathname_join(
sounds_fallback_path,
dir_assets,
"sounds",
sizeof(sounds_fallback_path));
fill_pathname_application_special(
sounds_path,
sizeof(sounds_path),
APPLICATION_SPECIAL_DIRECTORY_ASSETS_SOUNDS);
list = dir_list_new(sounds_path, MENU_SOUND_FORMATS, false, false, false, false);
list_fallback = dir_list_new(sounds_fallback_path, MENU_SOUND_FORMATS, false, false, false, false);
if (!list)
{
list = list_fallback;
list_fallback = NULL;
}
if (!list || list->size == 0)
goto end;
if (list_fallback && list_fallback->size > 0)
{
for (i = 0; i < list_fallback->size; i++)
{
if (list->size == 0 || !string_list_find_elem(list, list_fallback->elems[i].data))
{
union string_list_elem_attr attr = {0};
string_list_append(list, list_fallback->elems[i].data, attr);
}
}
}
for (i = 0; i < list->size; i++)
{
const char *path = list->elems[i].data;
const char *ext = path_get_extension(path);
if (audio_driver_mixer_extension_supported(ext))
{
basename_noext[0] = '\0';
fill_pathname_base_noext(basename_noext, path, sizeof(basename_noext));
if (string_is_equal_noncase(basename_noext, "ok"))
path_ok = path;
else if (string_is_equal_noncase(basename_noext, "cancel"))
path_cancel = path;
else if (string_is_equal_noncase(basename_noext, "notice"))
path_notice = path;
else if (string_is_equal_noncase(basename_noext, "bgm"))
path_bgm = path;
else if (string_is_equal_noncase(basename_noext, "unlock"))
path_cheevo_unlock = path;
}
}
if (path_ok && audio_enable_menu_ok)
task_push_audio_mixer_load(path_ok, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_OK);
if (path_cancel && audio_enable_menu_cancel)
task_push_audio_mixer_load(path_cancel, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_CANCEL);
if (path_notice && audio_enable_menu_notice)
task_push_audio_mixer_load(path_notice, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_NOTICE);
if (path_bgm && audio_enable_menu_bgm)
task_push_audio_mixer_load(path_bgm, audio_driver_load_menu_bgm_callback, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_BGM);
if (path_cheevo_unlock && audio_enable_cheevo_unlock)
task_push_audio_mixer_load(path_cheevo_unlock, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_ACHIEVEMENT_UNLOCK);
end:
if (list)
string_list_free(list);
if (list_fallback)
string_list_free(list_fallback);
}
void audio_driver_mixer_play_stream(unsigned i)
{
audio_driver_st.mixer_streams[i].stop_cb = audio_mixer_play_stop_cb;
audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING);
}
void audio_driver_mixer_play_menu_sound_looped(unsigned i)
{
audio_driver_st.mixer_streams[i].stop_cb = audio_mixer_menu_stop_cb;
audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_LOOPED);
}
void audio_driver_mixer_play_menu_sound(unsigned i)
{
audio_driver_st.mixer_streams[i].stop_cb = audio_mixer_menu_stop_cb;
audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING);
}
void audio_driver_mixer_play_stream_looped(unsigned i)
{
audio_driver_st.mixer_streams[i].stop_cb = audio_mixer_play_stop_cb;
audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_LOOPED);
}
void audio_driver_mixer_play_stream_sequential(unsigned i)
{
audio_driver_st.mixer_streams[i].stop_cb = audio_mixer_play_stop_sequential_cb;
audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL);
}
float audio_driver_mixer_get_stream_volume(unsigned i)
{
if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
return 0.0f;
return audio_driver_st.mixer_streams[i].volume;
}
void audio_driver_mixer_set_stream_volume(unsigned i, float vol)
{
audio_mixer_voice_t *voice = NULL;
if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
return;
audio_driver_st.mixer_streams[i].volume = vol;
voice =
audio_driver_st.mixer_streams[i].voice;
if (voice)
audio_mixer_voice_set_volume(voice, DB_TO_GAIN(vol));
}
void audio_driver_mixer_stop_stream(unsigned i)
{
bool set_state = false;
if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
return;
switch (audio_driver_st.mixer_streams[i].state)
{
case AUDIO_STREAM_STATE_PLAYING:
case AUDIO_STREAM_STATE_PLAYING_LOOPED:
case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
set_state = true;
break;
case AUDIO_STREAM_STATE_STOPPED:
case AUDIO_STREAM_STATE_NONE:
break;
}
if (set_state)
{
audio_mixer_voice_t *voice = audio_driver_st.mixer_streams[i].voice;
if (voice)
audio_mixer_stop(voice);
audio_driver_st.mixer_streams[i].state = AUDIO_STREAM_STATE_STOPPED;
audio_driver_st.mixer_streams[i].volume = 1.0f;
}
}
void audio_driver_mixer_remove_stream(unsigned i)
{
bool destroy = false;
if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
return;
switch (audio_driver_st.mixer_streams[i].state)
{
case AUDIO_STREAM_STATE_PLAYING:
case AUDIO_STREAM_STATE_PLAYING_LOOPED:
case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
audio_driver_mixer_stop_stream(i);
destroy = true;
break;
case AUDIO_STREAM_STATE_STOPPED:
destroy = true;
break;
case AUDIO_STREAM_STATE_NONE:
break;
}
if (destroy)
{
audio_mixer_sound_t *handle = audio_driver_st.mixer_streams[i].handle;
if (handle)
audio_mixer_destroy(handle);
if (!string_is_empty(audio_driver_st.mixer_streams[i].name))
free(audio_driver_st.mixer_streams[i].name);
audio_driver_st.mixer_streams[i].state = AUDIO_STREAM_STATE_NONE;
audio_driver_st.mixer_streams[i].stop_cb = NULL;
audio_driver_st.mixer_streams[i].volume = 0.0f;
audio_driver_st.mixer_streams[i].handle = NULL;
audio_driver_st.mixer_streams[i].voice = NULL;
audio_driver_st.mixer_streams[i].name = NULL;
}
}
bool audio_driver_mixer_toggle_mute(void)
{
audio_driver_st.mixer_mute_enable =
!audio_driver_st.mixer_mute_enable;
return true;
}
#endif
bool audio_driver_enable_callback(void)
{
if (!audio_driver_st.callback.callback)
return false;
if (audio_driver_st.callback.set_state)
audio_driver_st.callback.set_state(true);
return true;
}
bool audio_driver_disable_callback(void)
{
if (!audio_driver_st.callback.callback)
return false;
if (audio_driver_st.callback.set_state)
audio_driver_st.callback.set_state(false);
return true;
}
bool audio_driver_callback(void)
{
settings_t *settings = config_get_ptr();
bool runloop_paused = runloop_state_get_ptr()->paused;
#ifdef HAVE_MENU
bool core_paused = runloop_paused || (settings->bools.menu_pause_libretro && menu_state_get_ptr()->alive);
#else
bool core_paused = runloop_paused;
#endif
if (!audio_driver_st.callback.callback)
return false;
if (!core_paused && audio_driver_st.callback.callback)
audio_driver_st.callback.callback();
return true;
}
bool audio_driver_has_callback(void)
{
return audio_driver_st.callback.callback != NULL;
}
static INLINE bool audio_driver_alive(void)
{
audio_driver_state_t *audio_st = &audio_driver_st;
if ( audio_st->current_audio
&& audio_st->current_audio->alive
&& audio_st->context_audio_data)
return audio_st->current_audio->alive(audio_st->context_audio_data);
return false;
}
bool audio_driver_start(bool is_shutdown)
{
audio_driver_state_t *audio_st = &audio_driver_st;
if (
!audio_st->current_audio
|| !audio_st->current_audio->start
|| !audio_st->context_audio_data)
goto error;
if (!audio_st->current_audio->start(
audio_st->context_audio_data, is_shutdown))
goto error;
return true;
error:
RARCH_ERR("%s\n",
msg_hash_to_str(MSG_FAILED_TO_START_AUDIO_DRIVER));
audio_driver_st.active = false;
return false;
}
bool audio_driver_stop(void)
{
if ( !audio_driver_st.current_audio
|| !audio_driver_st.current_audio->stop
|| !audio_driver_st.context_audio_data
|| !audio_driver_alive()
)
return false;
return audio_driver_st.current_audio->stop(
audio_driver_st.context_audio_data);
}
#ifdef HAVE_REWIND
void audio_driver_frame_is_reverse(void)
{
audio_driver_state_t *audio_st = &audio_driver_st;
recording_state_t *recording_st = recording_state_get_ptr();
runloop_state_t *runloop_st = runloop_state_get_ptr();
/* We just rewound. Flush rewind audio buffer. */
if ( recording_st->data &&
recording_st->driver &&
recording_st->driver->push_audio)
{
struct record_audio_data ffemu_data;
ffemu_data.data = audio_st->rewind_buf +
audio_st->rewind_ptr;
ffemu_data.frames = (audio_st->rewind_size -
audio_st->rewind_ptr) / 2;
recording_st->driver->push_audio(
recording_st->data,
&ffemu_data);
}
if (!(
runloop_st->paused
|| !audio_st->active
|| !audio_st->output_samples_buf))
if (!audio_st->suspended)
{
settings_t *settings = config_get_ptr();
audio_driver_flush(audio_st,
settings->floats.slowmotion_ratio,
settings->bools.audio_fastforward_mute,
audio_st->rewind_buf +
audio_st->rewind_ptr,
audio_st->rewind_size -
audio_st->rewind_ptr,
runloop_st->slowmotion,
runloop_st->fastmotion);
}
}
#endif
void audio_set_float(enum audio_action action, float val)
{
switch (action)
{
case AUDIO_ACTION_VOLUME_GAIN:
audio_driver_st.volume_gain = DB_TO_GAIN(val);
break;
case AUDIO_ACTION_MIXER_VOLUME_GAIN:
#ifdef HAVE_AUDIOMIXER
audio_driver_st.mixer_volume_gain = DB_TO_GAIN(val);
#endif
break;
case AUDIO_ACTION_RATE_CONTROL_DELTA:
audio_driver_st.rate_control_delta = val;
break;
case AUDIO_ACTION_NONE:
default:
break;
}
}
float *audio_get_float_ptr(enum audio_action action)
{
switch (action)
{
case AUDIO_ACTION_RATE_CONTROL_DELTA:
return &audio_driver_st.rate_control_delta;
case AUDIO_ACTION_NONE:
default:
break;
}
return NULL;
}
bool *audio_get_bool_ptr(enum audio_action action)
{
switch (action)
{
case AUDIO_ACTION_MIXER_MUTE_ENABLE:
#ifdef HAVE_AUDIOMIXER
return &audio_driver_st.mixer_mute_enable;
#else
break;
#endif
case AUDIO_ACTION_MUTE_ENABLE:
return &audio_driver_st.mute_enable;
case AUDIO_ACTION_NONE:
default:
break;
}
return NULL;
}
bool audio_compute_buffer_statistics(audio_statistics_t *stats)
{
unsigned i, low_water_size, high_water_size, avg, stddev;
uint64_t accum = 0;
uint64_t accum_var = 0;
unsigned low_water_count = 0;
unsigned high_water_count = 0;
audio_driver_state_t *audio_st = &audio_driver_st;
unsigned samples = MIN(
(unsigned)audio_st->free_samples_count,
AUDIO_BUFFER_FREE_SAMPLES_COUNT);
if (samples < 3)
return false;
stats->samples = (unsigned)
audio_st->free_samples_count;
#ifdef WARPUP
/* uint64 to double not implemented, fair chance
* signed int64 to double doesn't exist either */
/* https://forums.libretro.com/t/unsupported-platform-help/13903/ */
(void)stddev;
#elif defined(_MSC_VER) && _MSC_VER <= 1200
/* FIXME: error C2520: conversion from unsigned __int64
* to double not implemented, use signed __int64 */
(void)stddev;
#else
for (i = 1; i < samples; i++)
accum += audio_st->free_samples_buf[i];
avg = (unsigned)accum / (samples - 1);
for (i = 1; i < samples; i++)
{
int diff = avg - audio_st->free_samples_buf[i];
accum_var += diff * diff;
}
stddev = (unsigned)
sqrt((double)accum_var / (samples - 2));
stats->average_buffer_saturation = (1.0f - (float)avg
/ audio_st->buffer_size) * 100.0;
stats->std_deviation_percentage = ((float)stddev
/ audio_st->buffer_size) * 100.0;
#endif
low_water_size = (unsigned)(audio_st->buffer_size * 3 / 4);
high_water_size = (unsigned)(audio_st->buffer_size / 4);
for (i = 1; i < samples; i++)
{
if (audio_st->free_samples_buf[i] >= low_water_size)
low_water_count++;
else if (audio_st->free_samples_buf[i] <= high_water_size)
high_water_count++;
}
stats->close_to_underrun = (100.0f * low_water_count) / (samples - 1);
stats->close_to_blocking = (100.0f * high_water_count) / (samples - 1);
return true;
}
#ifdef HAVE_MENU
void audio_driver_menu_sample(void)
{
static int16_t samples_buf[1024] = {0};
settings_t *settings = config_get_ptr();
video_driver_state_t *video_st = video_state_get_ptr();
runloop_state_t *runloop_st = runloop_state_get_ptr();
recording_state_t *recording_st = recording_state_get_ptr();
struct retro_system_av_info *av_info = &video_st->av_info;
const struct retro_system_timing *info =
(const struct retro_system_timing*)&av_info->timing;
unsigned sample_count = (info->sample_rate / info->fps) * 2;
audio_driver_state_t *audio_st = audio_state_get_ptr();
bool check_flush = !(
runloop_st->paused
|| !audio_st->active
|| !audio_st->output_samples_buf);
if (audio_st->suspended)
check_flush = false;
while (sample_count > 1024)
{
if ( recording_st->data &&
recording_st->driver &&
recording_st->driver->push_audio)
{
struct record_audio_data ffemu_data;
ffemu_data.data = samples_buf;
ffemu_data.frames = 1024 / 2;
recording_st->driver->push_audio(
recording_st->data, &ffemu_data);
}
if (check_flush)
audio_driver_flush(audio_st,
settings->floats.slowmotion_ratio,
settings->bools.audio_fastforward_mute,
samples_buf,
1024,
runloop_st->slowmotion,
runloop_st->fastmotion);
sample_count -= 1024;
}
if ( recording_st->data &&
recording_st->driver &&
recording_st->driver->push_audio)
{
struct record_audio_data ffemu_data;
ffemu_data.data = samples_buf;
ffemu_data.frames = sample_count / 2;
recording_st->driver->push_audio(
recording_st->data, &ffemu_data);
}
if (check_flush)
audio_driver_flush(audio_st,
settings->floats.slowmotion_ratio,
settings->bools.audio_fastforward_mute,
samples_buf,
sample_count,
runloop_st->slowmotion,
runloop_st->fastmotion);
}
#endif
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