diff options
Diffstat (limited to 'maemo/dsp-protocol.h')
| -rw-r--r-- | maemo/dsp-protocol.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/maemo/dsp-protocol.h b/maemo/dsp-protocol.h new file mode 100644 index 0000000..be5d554 --- /dev/null +++ b/maemo/dsp-protocol.h @@ -0,0 +1,88 @@ +/** + * @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 _GNU_SOURCE +#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 */ |