mirror of
https://github.com/libretro/RetroArch
synced 2024-07-03 08:48:42 +00:00
e7f182811a
* Split up audio code into new file audio/audio_driver.c * Fix build issues #1 * Small cleanup * Fix typo
442 lines
11 KiB
C
442 lines
11 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2019 - p-sam
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <malloc.h>
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#include <stdint.h>
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#include <switch.h>
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#include <queues/fifo_queue.h>
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#include "../audio_driver.h"
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#include "../../verbosity.h"
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#include "../../tasks/tasks_internal.h"
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#define BUFFER_COUNT 5
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static const int sample_rate = 48000;
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static const int num_channels = 2;
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static const uint8_t sink_channels[] = { 0, 1 };
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static const size_t thread_stack_size = 1024 * 8;
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static const int thread_preferred_cpu = 2;
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static const AudioRendererConfig audio_renderer_config =
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{
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.output_rate = AudioRendererOutputRate_48kHz,
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.num_voices = 24,
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.num_effects = 0,
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.num_sinks = 1,
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.num_mix_objs = 1,
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.num_mix_buffers = 2,
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};
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typedef struct
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{
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AudioDriver drv;
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void* mempool;
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AudioDriverWaveBuf wavebufs[BUFFER_COUNT];
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size_t buffer_size;
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size_t samples;
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bool nonblock;
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fifo_buffer_t* fifo;
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Mutex fifo_lock;
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CondVar fifo_condvar;
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Mutex fifo_condlock;
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Thread thread;
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volatile bool running;
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volatile bool paused;
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} libnx_audren_thread_t;
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static void thread_job(void* data)
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{
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unsigned i;
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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size_t available = 0;
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size_t current_size = 0;
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size_t written_tmp = 0;
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AudioDriverWaveBuf* current_wavebuf = NULL;
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void* current_pool_ptr = NULL;
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void* dstbuf = NULL;
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if (!aud)
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return;
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while (aud->running)
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{
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if (!current_wavebuf)
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{
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for (i = 0; i < BUFFER_COUNT; i++)
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{
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if (aud->wavebufs[i].state == AudioDriverWaveBufState_Free
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|| aud->wavebufs[i].state == AudioDriverWaveBufState_Done)
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{
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current_wavebuf = &aud->wavebufs[i];
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current_pool_ptr = aud->mempool + (i * aud->buffer_size);
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current_size = 0;
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break;
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}
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}
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}
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if (current_wavebuf)
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{
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mutexLock(&aud->fifo_lock);
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available = aud->paused ? 0 : FIFO_READ_AVAIL(aud->fifo);
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written_tmp = MIN(available, aud->buffer_size - current_size);
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dstbuf = current_pool_ptr + current_size;
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if (written_tmp > 0)
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fifo_read(aud->fifo, dstbuf, written_tmp);
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mutexUnlock(&aud->fifo_lock);
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if (written_tmp > 0)
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{
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condvarWakeAll(&aud->fifo_condvar);
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current_size += written_tmp;
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armDCacheFlush(dstbuf, written_tmp);
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}
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if (current_size == aud->buffer_size)
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{
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audrvVoiceAddWaveBuf(&aud->drv, 0, current_wavebuf);
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audrvUpdate(&aud->drv);
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if (!audrvVoiceIsPlaying(&aud->drv, 0))
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{
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audrvVoiceStart(&aud->drv, 0);
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}
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current_wavebuf = NULL;
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}
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svcSleepThread(1000UL);
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}
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else
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{
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audrvUpdate(&aud->drv);
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audrenWaitFrame();
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}
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}
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}
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static void *libnx_audren_thread_audio_init(const char *device, unsigned rate, unsigned latency,
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unsigned block_frames,
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unsigned *new_rate)
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{
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unsigned i, j;
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libnx_audren_thread_t *aud;
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Result rc;
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int mpid;
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size_t mempool_size;
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unsigned real_latency;
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int32_t thread_priority;
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RARCH_LOG("[Audio]: Using libnx_audren_thread driver\n");
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aud = (libnx_audren_thread_t*)calloc(1, sizeof(libnx_audren_thread_t));
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if (!aud)
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{
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RARCH_ERR("[Audio]: struct alloc failed\n");
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goto fail;
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}
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real_latency = MAX(latency, 5);
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RARCH_LOG("[Audio]: real_latency is %u\n", real_latency);
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aud->running = true;
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aud->paused = false;
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aud->nonblock = !block_frames;
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aud->buffer_size = (real_latency * sample_rate / 1000);
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aud->samples = (aud->buffer_size / num_channels / sizeof(int16_t));
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mempool_size = (aud->buffer_size * BUFFER_COUNT +
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(AUDREN_MEMPOOL_ALIGNMENT-1)) &~ (AUDREN_MEMPOOL_ALIGNMENT-1);
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aud->mempool = memalign(AUDREN_MEMPOOL_ALIGNMENT, mempool_size);
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if (!aud->mempool)
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{
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RARCH_ERR("[Audio]: mempool alloc failed\n");
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goto fail;
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}
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rc = audrenInitialize(&audio_renderer_config);
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if (R_FAILED(rc))
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{
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RARCH_ERR("[Audio]: audrenInitialize: %x\n", rc);
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goto fail;
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}
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rc = audrvCreate(&aud->drv, &audio_renderer_config, num_channels);
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if (R_FAILED(rc))
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{
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RARCH_ERR("[Audio]: audrvCreate: %x\n", rc);
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goto fail_init;
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}
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for (i = 0; i < BUFFER_COUNT; i++)
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{
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aud->wavebufs[i].data_raw = aud->mempool;
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aud->wavebufs[i].size = mempool_size;
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aud->wavebufs[i].start_sample_offset = i * aud->samples;
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aud->wavebufs[i].end_sample_offset = aud->wavebufs[i].start_sample_offset + aud->samples;
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}
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mpid = audrvMemPoolAdd(&aud->drv, aud->mempool, mempool_size);
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audrvMemPoolAttach(&aud->drv, mpid);
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audrvDeviceSinkAdd(&aud->drv, AUDREN_DEFAULT_DEVICE_NAME,
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num_channels, sink_channels);
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rc = audrenStartAudioRenderer();
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if (R_FAILED(rc))
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{
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RARCH_ERR("[Audio]: audrenStartAudioRenderer: %x\n", rc);
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}
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audrvVoiceInit(&aud->drv, 0, num_channels, PcmFormat_Int16, sample_rate);
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audrvVoiceSetDestinationMix(&aud->drv, 0, AUDREN_FINAL_MIX_ID);
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for (i = 0; i < num_channels; i++)
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{
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for (j = 0; j < num_channels; j++)
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{
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audrvVoiceSetMixFactor(&aud->drv, 0, i == j ? 1.0f : 0.0f, i, j);
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}
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}
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aud->fifo = fifo_new(aud->buffer_size);
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if (!aud->fifo)
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{
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RARCH_ERR("[Audio]: fifo alloc failed\n");
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goto fail_drv;
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}
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mutexInit(&aud->fifo_lock);
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condvarInit(&aud->fifo_condvar);
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mutexInit(&aud->fifo_condlock);
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svcGetThreadPriority(&thread_priority, CUR_THREAD_HANDLE);
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rc = threadCreate(&aud->thread, &thread_job,
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(void*)aud, NULL, thread_stack_size,
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thread_priority - 1, thread_preferred_cpu);
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if (R_FAILED(rc))
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{
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RARCH_ERR("[Audio]: threadCreate: %x\n", rc);
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goto fail_drv;
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}
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rc = threadStart(&aud->thread);
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if (R_FAILED(rc))
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{
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RARCH_ERR("[Audio]: threadStart: %x\n", rc);
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threadClose(&aud->thread);
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goto fail_drv;
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}
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*new_rate = sample_rate;
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return aud;
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fail_drv:
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audrvClose(&aud->drv);
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fail_init:
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audrenExit();
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fail:
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if (aud)
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{
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if (aud->mempool)
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free(aud->mempool);
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free(aud);
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}
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return NULL;
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}
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static size_t libnx_audren_thread_audio_buffer_size(void *data)
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{
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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if (!aud)
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return 0;
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return aud->buffer_size;
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}
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static ssize_t libnx_audren_thread_audio_write(void *data,
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const void *buf, size_t size)
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{
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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size_t available, written, written_tmp;
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if (!aud || !aud->running)
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return -1;
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if (aud->paused)
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return 0;
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if (aud->nonblock)
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{
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mutexLock(&aud->fifo_lock);
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available = FIFO_WRITE_AVAIL(aud->fifo);
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written = MIN(available, size);
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if (written > 0)
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fifo_write(aud->fifo, buf, written);
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mutexUnlock(&aud->fifo_lock);
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}
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else
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{
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written = 0;
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while (written < size && aud->running)
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{
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mutexLock(&aud->fifo_lock);
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available = FIFO_WRITE_AVAIL(aud->fifo);
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if (available)
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{
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written_tmp = MIN(size - written, available);
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fifo_write(aud->fifo, (const char*)buf + written, written_tmp);
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mutexUnlock(&aud->fifo_lock);
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written += written_tmp;
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}
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else
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{
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mutexUnlock(&aud->fifo_lock);
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mutexLock(&aud->fifo_condlock);
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condvarWait(&aud->fifo_condvar, &aud->fifo_condlock);
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mutexUnlock(&aud->fifo_condlock);
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}
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}
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}
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return written;
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}
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static bool libnx_audren_thread_audio_stop(void *data)
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{
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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if (!aud)
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return false;
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aud->paused = true;
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return true;
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}
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static bool libnx_audren_thread_audio_start(void *data, bool is_shutdown)
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{
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(void)is_shutdown;
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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if (!aud)
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return false;
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aud->paused = false;
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return true;
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}
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static bool libnx_audren_thread_audio_alive(void *data)
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{
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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if (!aud)
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return false;
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return true;
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}
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static void libnx_audren_thread_audio_free(void *data)
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{
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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if (!aud)
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return;
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aud->running = false;
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mutexUnlock(&aud->fifo_lock);
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threadWaitForExit(&aud->thread);
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threadClose(&aud->thread);
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audrvVoiceStop(&aud->drv, 0);
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audrvClose(&aud->drv);
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audrenExit();
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if (aud->mempool)
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{
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free(aud->mempool);
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}
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if (aud->fifo)
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{
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fifo_clear(aud->fifo);
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fifo_free(aud->fifo);
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}
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free(aud);
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}
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static bool libnx_audren_thread_audio_use_float(void *data)
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{
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(void)data;
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return false; /* force S16 */
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}
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static size_t libnx_audren_thread_audio_write_avail(void *data)
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{
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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size_t available;
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if (!aud)
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return 0;
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mutexLock(&aud->fifo_lock);
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available = FIFO_WRITE_AVAIL(aud->fifo);
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mutexUnlock(&aud->fifo_lock);
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return available;
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}
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static void libnx_audren_thread_audio_set_nonblock_state(void *data, bool state)
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{
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libnx_audren_thread_t *aud = (libnx_audren_thread_t*)data;
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if (!aud)
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return;
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aud->nonblock = state;
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}
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audio_driver_t audio_switch_libnx_audren_thread = {
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libnx_audren_thread_audio_init,
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libnx_audren_thread_audio_write,
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libnx_audren_thread_audio_stop,
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libnx_audren_thread_audio_start,
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libnx_audren_thread_audio_alive,
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libnx_audren_thread_audio_set_nonblock_state,
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libnx_audren_thread_audio_free,
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libnx_audren_thread_audio_use_float,
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"switch_audren_thread",
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NULL, /* device_list_new */
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NULL, /* device_list_free */
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libnx_audren_thread_audio_write_avail,
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libnx_audren_thread_audio_buffer_size,
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};
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