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Add AudioPlayQueue

dds
PaulStoffregen před 10 roky
rodič
revize
493cbaa9d5
3 změnil soubory, kde provedl 118 přidání a 0 odebrání
  1. +1
    -0
      Audio.h
  2. +67
    -0
      play_queue.cpp
  3. +50
    -0
      play_queue.h

+ 1
- 0
Audio.h Zobrazit soubor

@@ -63,6 +63,7 @@
#include "output_i2s.h"
#include "output_pwm.h"
#include "play_memory.h"
#include "play_queue.h"
#include "play_sd_raw.h"
#include "play_sd_wav.h"
#include "synth_tonesweep.h"

+ 67
- 0
play_queue.cpp Zobrazit soubor

@@ -0,0 +1,67 @@
/* Audio Library for Teensy 3.X
* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
*
* Development of this audio library was funded by PJRC.COM, LLC by sales of
* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
* open source software by purchasing Teensy or other PJRC products.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice, development funding notice, and this permission
* notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

#include "play_queue.h"
#include "utility/dspinst.h"


int16_t * AudioPlayQueue::getBuffer(void)
{
while (1) {
userblock = allocate();
if (userblock) return userblock->data;
yield();
}
}

void AudioPlayQueue::playBuffer(void)
{
uint32_t h;

if (!userblock) return;
h = head + 1;
if (h >= 32) h = 0;
while (tail == h) ; // wait until space in the queue
queue[h] = userblock;
head = h;
userblock = NULL;
}

void AudioPlayQueue::update(void)
{
audio_block_t *block;
uint32_t t;

t = tail;
if (t != head) {
if (++t >= 32) t = 0;
block = queue[t];
tail = t;
transmit(block);
release(block);
}
}


+ 50
- 0
play_queue.h Zobrazit soubor

@@ -0,0 +1,50 @@
/* Audio Library for Teensy 3.X
* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
*
* Development of this audio library was funded by PJRC.COM, LLC by sales of
* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
* open source software by purchasing Teensy or other PJRC products.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice, development funding notice, and this permission
* notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

#ifndef play_queue_h_
#define play_queue_h_

#include "AudioStream.h"

class AudioPlayQueue : public AudioStream
{
public:
AudioPlayQueue(void) : AudioStream(0, NULL),
userblock(NULL), head(0), tail(0) { }
void play(int16_t data);
void play(const int16_t *data, uint32_t len);
int16_t * getBuffer(void);
void playBuffer(void);
void stop(void);
//bool isPlaying(void) { return playing; }
virtual void update(void);
private:
audio_block_t *queue[32];
audio_block_t *userblock;
volatile uint8_t head, tail;
};

#endif

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