
/*
 * CINELERRA
 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
 * Copyright (C) 2003-2016 Cinelerra CV contributors
 *
 * This program 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 Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef AUDIOOSS_H
#define AUDIOOSS_H

#include "audiodevice.h"
#include "condition.inc"
#include "playbackconfig.inc"

#ifdef HAVE_OSS
#include <sys/soundcard.h>

class OSSThread : public Thread
{
public:
	OSSThread(AudioOSS *device);
	~OSSThread();

	void run();
	void write_data(int fd, unsigned char *data, int bytes);
	void read_data(int fd, unsigned char *data, int bytes);
// Must synchronize reads and writes
	void wait_read();
	void wait_write();
	int64_t device_position();

	Condition *input_lock;
	Condition *output_lock;
	Condition *read_lock;
	Condition *write_lock;
	int rd, wr, fd;
	unsigned char *data;
	int bytes;
	int done;
	AudioOSS *device;

	int64_t bytes_written;
	Timer *timer;
	int delay;
	Mutex *timer_lock;

};

class AudioOSS : public AudioLowLevel
{
public:
	AudioOSS(AudioDevice *device);
	~AudioOSS();

	int open_input();
	int open_output();
	int write_buffer(char *buffer, int bytes);
	int read_buffer(char *buffer, int bytes);
	int close_all();
	int64_t device_position();
	int flush_device();
	int interrupt_playback();
	int stop_output() { return interrupt_playback(); }
	int64_t samples_output();

private:
	int get_fmt(int bits);
	int sizetofrag(int samples, int channels, int bits);
	int set_cloexec_flag(int desc, int value);
	int get_output(int number);
	int get_input(int number);
	int dsp_in[MAXDEVICES], dsp_out[MAXDEVICES];
	OSSThread *thread[MAXDEVICES];
// Temp for each device, Bytes allocated
	unsigned char *data[MAXDEVICES];
	int data_allocated[MAXDEVICES];
};

#endif

#endif
