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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* aioloop.cc
*
* Thu Sep 25 11:25:30 CEST 2014
* Copyright 2014 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of LibAudioIO.
*
* LibAudioIO is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* LibAudioIO 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with LibAudioIO; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "device.h"
#include "mixer.h"
#include "source.h"
#include "sink.h"
#include <pthread.h>
#include <semaphore.h>
int pcm_size[2];
char *pcm[2];
volatile int buf_rcnt = 0;
volatile int buf_wcnt = 0;
struct semaphore_private_t;
class Semaphore {
public:
Semaphore(const char *name = "");
~Semaphore();
void post();
void wait();
private:
struct semaphore_private_t *prv;
const char *name;
};
struct semaphore_private_t {
sem_t semaphore;
};
Semaphore::Semaphore(const char *name)
{
prv = new struct semaphore_private_t();
sem_init(&prv->semaphore, 0, 0);
}
Semaphore::~Semaphore()
{
sem_destroy(&prv->semaphore);
if(prv) delete prv;
}
void Semaphore::post()
{
sem_post(&prv->semaphore);
}
void Semaphore::wait()
{
sem_wait(&prv->semaphore);
}
static void* thread_run(void *data);
class Thread {
public:
virtual ~Thread() {}
void run()
{
pthread_create(&tid, NULL, thread_run, this);
}
void wait_stop()
{
pthread_join(tid, NULL);
}
virtual void thread_main() = 0;
private:
pthread_t tid;
};
static void* thread_run(void *data)
{
Thread *t = (Thread*)data;
t->thread_main();
return 0;
}
char ringbuffer[4096 * 10];
class Player : public Thread {
public:
Player(Sink *sink)
{
this->sink = sink;
}
void thread_main()
{
int pos = sizeof(ringbuffer) / 2;
char pcm[940 * sizeof(short)];
while(1) {
for(unsigned int i = 0; i < sizeof(pcm); i++) {
pcm[i] = ringbuffer[pos % sizeof(ringbuffer)];
pos++;
}
int sz = sink->writeSamples(pcm, sizeof(pcm));
if(sz < 1) {
printf("write: %d\n", sz);
continue;
}
}
}
private:
Sink *sink;
};
int main(int argc, char *argv[])
{
if(argc < 4) {
printf("Usage: %s card input output\n", argv[0]);
return 1;
}
size_t buffer_size = 940 * sizeof(short);
pcm[0] = (char *)malloc(buffer_size);
pcm[1] = (char *)malloc(buffer_size);
pcm_size[0] = 0;
pcm_size[1] = 0;
Device device(argv[1]);
Source *src = device.getSource(argv[2], 44100, 1);
if(src == NULL) {
printf("Source '%s' failed!\n", argv[2]);
return 1;
}
Sink *sink = device.getSink(argv[3], 44100, 1);
if(sink == NULL) {
printf("Sink '%s' failed!\n", argv[3]);
return 1;
}
memset(ringbuffer, 0, sizeof(ringbuffer));
Player p(sink);
p.run();
int sz = 0;
int pos = sizeof(ringbuffer) / 2;
char pcm[940 * sizeof(short)];
while(1) {
sz = src->readSamples(pcm, sizeof(pcm));
for(int i = 0; i < sz; i++) {
ringbuffer[pos % sizeof(ringbuffer)] = pcm[i];
pos++;
}
if(sz < 1) {
printf("read: %d\n", sz);
continue;
}
}
delete src;
delete sink;
}
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