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| /* RetroArch - A frontend for libretro. | ||
| * Copyright (C) 2023 Jesse Talavera-Greenberg | ||
| * | ||
| * 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 Found- | ||
| * ation, 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 "verbosity.h" | ||
| #include "retro_assert.h" | ||
| #include "retro_math.h" | ||
| #include "audio/microphone_driver.h" | ||
| #include <rthreads/rthreads.h> | ||
| #include <queues/fifo_queue.h> | ||
|
|
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| #ifndef TARGET_OS_IPHONE | ||
| #include <CoreAudio/CoreAudio.h> | ||
| #endif | ||
|
|
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| #include <AudioToolbox/AudioToolbox.h> | ||
| #include <AudioUnit/AudioUnit.h> | ||
|
|
||
| typedef struct | ||
| { | ||
| bool nonblock; | ||
| } ca_mic_drv_t; | ||
|
|
||
| typedef struct | ||
| { | ||
| AudioQueueRef audioQueue; | ||
| AudioQueueBufferRef buffers[3]; | ||
| fifo_buffer_t *buffer; | ||
| slock_t *lock; | ||
| scond_t *cond; | ||
| bool running; | ||
| } ca_mic_t; | ||
|
|
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| static void *coreaudio_microphone_init(void) | ||
| { | ||
| ca_mic_drv_t *drv = (ca_mic_drv_t *)calloc(1, sizeof(*drv)); | ||
| return drv; | ||
| } | ||
|
|
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| static void coreaudio_microphone_free(void *drv) | ||
| { | ||
| if (drv) | ||
| free(drv); | ||
| } | ||
|
|
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| static int coreaudio_microphone_read(void *drv, void *m, void *buf, size_t sz) | ||
| { | ||
| ca_mic_drv_t *cadrv = (ca_mic_drv_t *)drv; | ||
| ca_mic_t *mic = (ca_mic_t *)m; | ||
| size_t read = 0; | ||
| slock_lock(mic->lock); | ||
| if (cadrv->nonblock) | ||
| { | ||
| size_t avail, read_amt; | ||
| avail = FIFO_READ_AVAIL(mic->buffer); | ||
| read_amt = avail > sz ? sz : avail; | ||
| if (read_amt > 0) | ||
| fifo_read(mic->buffer, buf, read_amt); | ||
| read = read_amt; | ||
| } | ||
| else | ||
| { | ||
| while (read < sz) | ||
| { | ||
| size_t avail = FIFO_READ_AVAIL(mic->buffer); | ||
| if (avail) | ||
| { | ||
| size_t read_amt = MIN(sz - read, avail); | ||
| fifo_read(mic->buffer, buf + read, read_amt); | ||
| read += read_amt; | ||
| } | ||
| // if (read != sz) | ||
| // scond_wait(mic->cond, mic->lock); | ||
| } | ||
| } | ||
| scond_signal(mic->cond); | ||
| slock_lock(mic->lock); | ||
| return (int)read; | ||
| } | ||
|
|
||
| static void coreaudio_microphone_set_nonblock_state(void *drv, bool nonblock) | ||
| { | ||
| ca_mic_drv_t *cadrv = (ca_mic_drv_t *)drv; | ||
| if (cadrv) | ||
| cadrv->nonblock = nonblock; | ||
| } | ||
|
|
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| static void AudioInputCallback(void *inUserData, AudioQueueRef inAQ, | ||
| AudioQueueBufferRef inBuffer, const AudioTimeStamp *inStartTime, | ||
| UInt32 inNumPackets, const AudioStreamPacketDescription *inPacketDesc) | ||
| { | ||
| ca_mic_t *mic = (ca_mic_t *)inUserData; | ||
|
|
||
| if (inNumPackets > 0) { | ||
| size_t read = 0; | ||
| slock_lock(mic->lock); | ||
| while (read < inBuffer->mAudioDataByteSize) | ||
| { | ||
| if (FIFO_WRITE_AVAIL(mic->buffer) >= inBuffer->mAudioDataByteSize) | ||
| { | ||
| fifo_write(mic->buffer, inBuffer->mAudioData, inBuffer->mAudioDataByteSize); | ||
| read += inBuffer->mAudioDataByteSize; | ||
| } | ||
| } | ||
| scond_signal(mic->cond); | ||
| slock_unlock(mic->lock); | ||
| } | ||
|
|
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| OSStatus status = AudioQueueEnqueueBuffer(inAQ, inBuffer, 0, NULL); | ||
| printf("%d\n", status); | ||
| } | ||
|
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| static void *coreaudio_microphone_open_mic(void *drv, const char *device, unsigned rate, unsigned latency, unsigned *new_rate) | ||
| { | ||
| ca_mic_t *mic = (ca_mic_t *)calloc(1, sizeof(*mic)); | ||
| if (!mic) | ||
| return NULL; | ||
|
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| int frames = next_pow2(rate * latency / 1000); | ||
| AudioStreamBasicDescription audioFormat; | ||
| memset(&audioFormat, 0, sizeof(audioFormat)); | ||
| audioFormat.mSampleRate = rate; | ||
| audioFormat.mFormatID = kAudioFormatLinearPCM; | ||
| audioFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked; | ||
| audioFormat.mFramesPerPacket = 1; | ||
| audioFormat.mChannelsPerFrame = 1; | ||
| audioFormat.mBitsPerChannel = 16; | ||
| audioFormat.mBytesPerPacket = 2; | ||
| audioFormat.mBytesPerFrame = 2; | ||
|
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| AudioQueueRef audioQueue; | ||
| AudioQueueNewInput(&audioFormat, AudioInputCallback, mic, NULL, kCFRunLoopCommonModes, 0, &audioQueue); | ||
|
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| const int bufferByteSize = frames * 2; | ||
|
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| for (int i = 0; i < 3; ++i) | ||
| AudioQueueAllocateBuffer(audioQueue, bufferByteSize, &mic->buffers[i]); | ||
|
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| mic->audioQueue = audioQueue; | ||
| mic->buffer = fifo_new(frames << 3); | ||
| mic->lock = slock_new(); | ||
| mic->cond = scond_new(); | ||
| mic->running = false; | ||
| return mic; | ||
| } | ||
|
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| static void coreaudio_microphone_close_mic(void *drv, void *m) | ||
| { | ||
| ca_mic_t *mic = (ca_mic_t *)m; | ||
| AudioQueueDispose(mic->audioQueue, true); | ||
| fifo_free(mic->buffer); | ||
| slock_free(mic->lock); | ||
| scond_free(mic->cond); | ||
| free(mic); | ||
| } | ||
|
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| static bool coreaudio_microphone_mic_alive(const void *drv, const void *m) | ||
| { | ||
| ca_mic_t *mic = (ca_mic_t *)m; | ||
| return mic && mic->running; | ||
| } | ||
|
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| static bool coreaudio_microphone_start_mic(void *drv, void *m) | ||
| { | ||
| ca_mic_t *mic = (ca_mic_t *)m; | ||
| if (!mic->running) | ||
| { | ||
| for (int i = 0; i < 3; i++) | ||
| AudioQueueEnqueueBuffer(mic->audioQueue, mic->buffers[i], 0, NULL); | ||
| OSStatus status = AudioQueueStart(mic->audioQueue, NULL); | ||
| mic->running = (status == 0); | ||
| } | ||
| return mic->running; | ||
| } | ||
|
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| static bool coreaudio_microphone_stop_mic(void *drv, void *m) | ||
| { | ||
| ca_mic_t *mic = (ca_mic_t *)m; | ||
| AudioQueueStop(mic->audioQueue, true); | ||
| mic->running = false; | ||
| return true; | ||
| } | ||
|
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| static bool coreaudio_microphone_mic_use_float(const void *drv, const void *mic) | ||
| { | ||
| return false; | ||
| } | ||
|
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| microphone_driver_t microphone_coreaudio = { | ||
| coreaudio_microphone_init, | ||
| coreaudio_microphone_free, | ||
| coreaudio_microphone_read, | ||
| coreaudio_microphone_set_nonblock_state, | ||
| "coreaudio", | ||
| NULL, | ||
| NULL, | ||
| coreaudio_microphone_open_mic, | ||
| coreaudio_microphone_close_mic, | ||
| coreaudio_microphone_mic_alive, | ||
| coreaudio_microphone_start_mic, | ||
| coreaudio_microphone_stop_mic, | ||
| coreaudio_microphone_mic_use_float, | ||
| }; |
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