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116 lines
2.8 KiB
116 lines
2.8 KiB
/* Audio Library for Teensy 3.X
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* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
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*
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* Development of this audio library was funded by PJRC.COM, LLC by sales of
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
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* open source software by purchasing Teensy or other PJRC products.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice, development funding notice, and this permission
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* notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "record_queue_f32.h"
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#include "utility/dspinst.h"
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int AudioRecordQueue_F32::available(void)
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{
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uint32_t h, t;
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h = head;
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t = tail;
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if (h >= t) return h - t;
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return 53 + h - t;
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}
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void AudioRecordQueue_F32::clear(void)
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{
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uint32_t t;
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if (userblock) {
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AudioStream_F32::release(userblock);
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userblock = NULL;
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}
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t = tail;
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while (t != head) {
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if (++t >= 53) t = 0;
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AudioStream_F32::release(queue[t]);
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}
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tail = t;
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}
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float32_t * AudioRecordQueue_F32::readBuffer(void)
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{
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// uint32_t t;
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//
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// if (userblock) return NULL;
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// t = tail;
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// if (t == head) return NULL;
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// if (++t >= 53) t = 0;
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// userblock = queue[t];
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// tail = t;
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// return userblock->data;
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return getAudioBlock()->data;
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}
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audio_block_f32_t * AudioRecordQueue_F32::getAudioBlock(void)
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{
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uint32_t t;
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if (userblock != NULL) return NULL;
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t = tail;
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if (t == head) return NULL;
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if (++t >= 53) t = 0;
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userblock = queue[t];
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tail = t;
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return userblock;
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}
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void AudioRecordQueue_F32::freeBuffer(void)
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{
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if (userblock == NULL) return;
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AudioStream_F32::release(userblock);
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userblock = NULL;
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}
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void AudioRecordQueue_F32::freeAudioBlock(void) {
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freeBuffer();
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}
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void AudioRecordQueue_F32::update(void)
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{
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audio_block_f32_t *block;
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uint32_t h;
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block = receiveReadOnly_f32();
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if (block==NULL) return;
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if (!enabled) {
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AudioStream_F32::release(block);
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return;
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}
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h = head + 1;
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if (h >= 53) h = 0;
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if (h == tail) {
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AudioStream_F32::release(block);
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} else {
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queue[h] = block;
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head = h;
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}
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}
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