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/**
* @file dsp-protocol.h - Definition of functions whose represents
* an interface to the DSP PCM Task node protocol.
* <p>
* Copyright (C) 2006 Nokia Corporation
* <p>
* Contact: Eduardo Bezerra Valentin <eduardo.valentin@indt.org.br>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
* */
#ifndef _DSP_PROTOCOL_H
#define _DSP_PROTOCOL_H
#define __USE_GNU
#include <features.h>
#include <pthread.h>
#include <semaphore.h>
#include "types.h"
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
typedef struct {
int fd;
char *device;
int state;
int mute;
unsigned int stream_id;
unsigned int bridge_buffer_size; /* in bytes */
unsigned int mmap_buffer_size; /* in bytes */
short int *mmap_buffer;
pthread_mutex_t mutex;
int sem_set_id;
#ifdef USE_RESOURCE_MANAGER
void *dbus_connection;
#endif
} dsp_protocol_t;
/* Initialisation phase */
int dsp_protocol_create(dsp_protocol_t ** dsp_protocol);
int dsp_protocol_open_node(dsp_protocol_t * dsp_protocol, const char *device);
int dsp_protocol_send_audio_params(dsp_protocol_t * dsp_protocol,
audio_params_data_t * audio_params_data);
int dsp_protocol_send_speech_params(dsp_protocol_t * dsp_protocol,
speech_params_data_t * audio_params_data);
/* Execution phase */
int dsp_protocol_send_play(dsp_protocol_t * dsp_protocol);
int dsp_protocol_send_audio_data(dsp_protocol_t * dsp_protocol,
void *data, unsigned short int count);
int dsp_protocol_receive_audio_data(dsp_protocol_t * dsp_protocol,
void *data, int count);
int dsp_protocol_send_pause(dsp_protocol_t * dsp_protocol);
int dsp_protocol_send_stop(dsp_protocol_t * dsp_protocol);
/* Deletion phase */
int dsp_protocol_close_node(dsp_protocol_t * dsp_protocol);
int dsp_protocol_destroy(dsp_protocol_t ** dsp_protocol);
/* controls */
int dsp_protocol_set_volume(dsp_protocol_t * dsp_protocol,
unsigned char left, unsigned char right);
int dsp_protocol_get_volume(dsp_protocol_t * dsp_protocol,
unsigned char *left, unsigned char *right);
int dsp_protocol_set_mute(dsp_protocol_t * dsp_protocol, unsigned char mute);
int dsp_protocol_get_mute(dsp_protocol_t * dsp_protocol);
/*miscelaneos*/
int dsp_protocol_set_mic_enabled(dsp_protocol_t * dsp_protocol, int enabled);
int dsp_protocol_probe_node(dsp_protocol_t * dsp_protocol, const char *device);
int safe_strtol(const char *str, long *val);
#endif /* _DSP_PROTOCOL_H */
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