mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-29 14:13:19 +00:00
300 lines
8.4 KiB
C
300 lines
8.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2013 - Daniel De Matteis
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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 "../driver.h"
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#include "../general.h"
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#include "../thread.h"
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#include <SLES/OpenSLES.h>
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#ifdef ANDROID
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#include <SLES/OpenSLES_Android.h>
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#endif
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// Helper macros, COM-style!
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#define SLObjectItf_Realize(a, ...) ((*(a))->Realize(a, __VA_ARGS__))
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#define SLObjectItf_GetInterface(a, ...) ((*(a))->GetInterface(a, __VA_ARGS__))
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#define SLObjectItf_Destroy(a) ((*(a))->Destroy((a)))
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#define SLEngineItf_CreateOutputMix(a, ...) ((*(a))->CreateOutputMix(a, __VA_ARGS__))
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#define SLEngineItf_CreateAudioPlayer(a, ...) ((*(a))->CreateAudioPlayer(a, __VA_ARGS__))
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#define SLPlayItf_SetPlayState(a, ...) ((*(a))->SetPlayState(a, __VA_ARGS__))
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typedef struct sl
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{
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uint8_t **buffer;
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uint8_t *buffer_chunk;
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unsigned buffer_index;
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unsigned buffer_ptr;
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volatile unsigned buffered_blocks;
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SLObjectItf engine_object;
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SLEngineItf engine;
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SLObjectItf output_mix;
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SLObjectItf buffer_queue_object;
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SLAndroidSimpleBufferQueueItf buffer_queue;
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SLPlayItf player;
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slock_t *lock;
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scond_t *cond;
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bool nonblock;
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unsigned buf_size;
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unsigned buf_count;
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} sl_t;
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static void opensl_callback(SLAndroidSimpleBufferQueueItf bq, void *ctx)
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{
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sl_t *sl = (sl_t*)ctx;
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__sync_fetch_and_sub(&sl->buffered_blocks, 1);
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scond_signal(sl->cond);
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}
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#define GOTO_IF_FAIL(x) do { \
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if ((res = (x)) != SL_RESULT_SUCCESS) \
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goto error; \
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} while(0)
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static void sl_free(void *data)
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{
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sl_t *sl = (sl_t*)data;
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if (!sl)
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return;
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if (sl->player)
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SLPlayItf_SetPlayState(sl->player, SL_PLAYSTATE_STOPPED);
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if (sl->buffer_queue_object)
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SLObjectItf_Destroy(sl->buffer_queue_object);
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if (sl->output_mix)
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SLObjectItf_Destroy(sl->output_mix);
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if (sl->engine_object)
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SLObjectItf_Destroy(sl->engine_object);
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if (sl->lock)
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slock_free(sl->lock);
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if (sl->cond)
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scond_free(sl->cond);
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free(sl->buffer);
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free(sl->buffer_chunk);
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free(sl);
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}
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static void *sl_init(const char *device, unsigned rate, unsigned latency)
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{
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unsigned i;
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(void)device;
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SLDataFormat_PCM fmt_pcm = {0};
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SLDataSource audio_src = {0};
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SLDataSink audio_sink = {0};
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SLDataLocator_AndroidSimpleBufferQueue loc_bufq = {0};
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SLDataLocator_OutputMix loc_outmix = {0};
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SLInterfaceID id = SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
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SLboolean req = SL_BOOLEAN_TRUE;
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SLresult res = 0;
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sl_t *sl = (sl_t*)calloc(1, sizeof(sl_t));
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if (!sl)
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goto error;
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RARCH_LOG("[SLES]: Requested audio latency: %d ms.", latency);
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GOTO_IF_FAIL(slCreateEngine(&sl->engine_object, 0, NULL, 0, NULL, NULL));
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GOTO_IF_FAIL(SLObjectItf_Realize(sl->engine_object, SL_BOOLEAN_FALSE));
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GOTO_IF_FAIL(SLObjectItf_GetInterface(sl->engine_object, SL_IID_ENGINE, &sl->engine));
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GOTO_IF_FAIL(SLEngineItf_CreateOutputMix(sl->engine, &sl->output_mix, 0, NULL, NULL));
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GOTO_IF_FAIL(SLObjectItf_Realize(sl->output_mix, SL_BOOLEAN_FALSE));
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if (g_settings.audio.block_frames)
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sl->buf_size = g_settings.audio.block_frames * 4;
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else
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sl->buf_size = next_pow2(32 * latency);
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sl->buf_count = (latency * 4 * out_rate + 500) / 1000;
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sl->buf_count = (sl->buf_count + sl->buf_size / 2) / sl->buf_size;
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sl->buffer = (uint8_t**)calloc(sizeof(uint8_t*), sl->buf_count);
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if (!sl->buffer)
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goto error;
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sl->buffer_chunk = (uint8_t*)calloc(sl->buf_count, sl->buf_size);
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if (!sl->buffer_chunk)
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goto error;
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for (i = 0; i < sl->buf_count; i++)
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sl->buffer[i] = sl->buffer_chunk + i * sl->buf_size;
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RARCH_LOG("[SLES]: Setting audio latency: Block size = %u, Blocks = %u, Total = %u ...\n",
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sl->buf_size, sl->buf_count, sl->buf_size * sl->buf_count);
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fmt_pcm.formatType = SL_DATAFORMAT_PCM;
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fmt_pcm.numChannels = 2;
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fmt_pcm.samplesPerSec = rate * 1000; // Samplerate is in milli-Hz.
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fmt_pcm.bitsPerSample = 16;
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fmt_pcm.containerSize = 16;
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fmt_pcm.channelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
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fmt_pcm.endianness = SL_BYTEORDER_LITTLEENDIAN; // Android only.
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audio_src.pLocator = &loc_bufq;
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audio_src.pFormat = &fmt_pcm;
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loc_bufq.locatorType = SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE;
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loc_bufq.numBuffers = sl->buf_count;
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loc_outmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
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loc_outmix.outputMix = sl->output_mix;
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audio_sink.pLocator = &loc_outmix;
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GOTO_IF_FAIL(SLEngineItf_CreateAudioPlayer(sl->engine, &sl->buffer_queue_object,
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&audio_src, &audio_sink,
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1, &id, &req));
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GOTO_IF_FAIL(SLObjectItf_Realize(sl->buffer_queue_object, SL_BOOLEAN_FALSE));
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GOTO_IF_FAIL(SLObjectItf_GetInterface(sl->buffer_queue_object, SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
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&sl->buffer_queue));
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sl->cond = scond_new();
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sl->lock = slock_new();
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(*sl->buffer_queue)->RegisterCallback(sl->buffer_queue, opensl_callback, sl);
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// Enqueue a bit to get stuff rolling.
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sl->buffered_blocks = sl->buf_count;
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sl->buffer_index = 0;
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for (i = 0; i < sl->buf_count; i++)
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(*sl->buffer_queue)->Enqueue(sl->buffer_queue, sl->buffer[i], sl->buf_size);
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GOTO_IF_FAIL(SLObjectItf_GetInterface(sl->buffer_queue_object, SL_IID_PLAY, &sl->player));
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GOTO_IF_FAIL(SLPlayItf_SetPlayState(sl->player, SL_PLAYSTATE_PLAYING));
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return sl;
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error:
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RARCH_ERR("Couldn't initialize OpenSL ES driver, error code: [%d].\n", (int)res);
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sl_free(sl);
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return NULL;
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}
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static bool sl_stop(void *data)
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{
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sl_t *sl = (sl_t*)data;
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return SLPlayItf_SetPlayState(sl->player, SL_PLAYSTATE_STOPPED) == SL_RESULT_SUCCESS;
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}
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static void sl_set_nonblock_state(void *data, bool state)
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{
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sl_t *sl = (sl_t*)data;
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sl->nonblock = state;
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}
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static bool sl_start(void *data)
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{
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sl_t *sl = (sl_t*)data;
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return SLPlayItf_SetPlayState(sl->player, SL_PLAYSTATE_PLAYING) == SL_RESULT_SUCCESS;
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}
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static ssize_t sl_write(void *data, const void *buf_, size_t size)
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{
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sl_t *sl = (sl_t*)data;
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size_t written = 0;
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const uint8_t *buf = (const uint8_t*)buf_;
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while (size)
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{
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if (sl->nonblock)
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{
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if (sl->buffered_blocks == sl->buf_count)
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break;
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}
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else
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{
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slock_lock(sl->lock);
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while (sl->buffered_blocks == sl->buf_count)
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scond_wait(sl->cond, sl->lock);
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slock_unlock(sl->lock);
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}
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size_t avail_write = min(sl->buf_size - sl->buffer_ptr, size);
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if (avail_write)
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{
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memcpy(sl->buffer[sl->buffer_index] + sl->buffer_ptr, buf, avail_write);
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sl->buffer_ptr += avail_write;
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buf += avail_write;
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size -= avail_write;
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written += avail_write;
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}
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if (sl->buffer_ptr >= sl->buf_size)
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{
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SLresult res = (*sl->buffer_queue)->Enqueue(sl->buffer_queue, sl->buffer[sl->buffer_index], sl->buf_size);
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sl->buffer_index = (sl->buffer_index + 1) % sl->buf_count;
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__sync_fetch_and_add(&sl->buffered_blocks, 1);
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sl->buffer_ptr = 0;
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if (res != SL_RESULT_SUCCESS)
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{
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RARCH_ERR("[OpenSL]: Failed to write! (Error: 0x%x)\n", (unsigned)res);
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return -1;
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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 size_t sl_write_avail(void *data)
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{
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sl_t *sl = (sl_t*)data;
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size_t avail = (sl->buf_count - (int)sl->buffered_blocks - 1) * sl->buf_size + (sl->buf_size - (int)sl->buffer_ptr);
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return avail;
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}
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static size_t sl_buffer_size(void *data)
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{
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sl_t *sl = (sl_t*)data;
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return sl->buf_size * sl->buf_count;
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}
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static bool sl_use_float(void *data)
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{
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(void)data;
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return false;
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}
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const audio_driver_t audio_opensl = {
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sl_init,
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sl_write,
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sl_stop,
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sl_start,
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sl_set_nonblock_state,
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sl_free,
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sl_use_float,
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"opensl",
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sl_write_avail,
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sl_buffer_size,
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};
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