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/*
* Copyright (c) 2012, Broadcom Europe Ltd
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _VC_AUDIO_DEFS_H_
#define _VC_AUDIO_DEFS_H_
#define VC_AUDIOSERV_MIN_VER 1
#define VC_AUDIOSERV_VER 2
/* FourCC code used for VCHI connection */
#define VC_AUDIO_SERVER_NAME MAKE_FOURCC("AUDS")
/* Maximum message length */
#define VC_AUDIO_MAX_MSG_LEN (sizeof( VC_AUDIO_MSG_T ))
/*
* List of screens that are currently supported
* All message types supported for HOST->VC direction
*/
typedef enum
{
VC_AUDIO_MSG_TYPE_RESULT, /* Generic result */
VC_AUDIO_MSG_TYPE_COMPLETE, /* playback of samples complete */
VC_AUDIO_MSG_TYPE_CONFIG, /* Configure */
VC_AUDIO_MSG_TYPE_CONTROL, /* control */
VC_AUDIO_MSG_TYPE_OPEN, /* open */
VC_AUDIO_MSG_TYPE_CLOSE, /* close/shutdown */
VC_AUDIO_MSG_TYPE_START, /* start output (i.e. resume) */
VC_AUDIO_MSG_TYPE_STOP, /* stop output (i.e. pause) */
VC_AUDIO_MSG_TYPE_WRITE, /* write samples */
VC_AUDIO_MSG_TYPE_MAX
} VC_AUDIO_MSG_TYPE;
static const char *vc_audio_msg_type_names[] = {
"VC_AUDIO_MSG_TYPE_RESULT",
"VC_AUDIO_MSG_TYPE_COMPLETE",
"VC_AUDIO_MSG_TYPE_CONFIG",
"VC_AUDIO_MSG_TYPE_CONTROL",
"VC_AUDIO_MSG_TYPE_OPEN",
"VC_AUDIO_MSG_TYPE_CLOSE",
"VC_AUDIO_MSG_TYPE_START",
"VC_AUDIO_MSG_TYPE_STOP",
"VC_AUDIO_MSG_TYPE_WRITE",
"VC_AUDIO_MSG_TYPE_MAX"
};
/* configure the audio */
typedef struct
{
uint32_t channels;
uint32_t samplerate;
uint32_t bps;
} VC_AUDIO_CONFIG_T;
typedef struct
{
uint32_t volume;
uint32_t dest;
} VC_AUDIO_CONTROL_T;
typedef struct
{
uint32_t dummy;
} VC_AUDIO_OPEN_T;
typedef struct
{
uint32_t dummy;
} VC_AUDIO_CLOSE_T;
typedef struct
{
uint32_t dummy;
} VC_AUDIO_START_T;
typedef struct
{
uint32_t draining;
} VC_AUDIO_STOP_T;
typedef struct
{
uint32_t count; /* in bytes */
void *callback;
void *cookie;
uint16_t silence;
uint16_t max_packet;
} VC_AUDIO_WRITE_T;
/* Generic result for a request (VC->HOST) */
typedef struct
{
int32_t success; /* Success value */
} VC_AUDIO_RESULT_T;
/* Generic result for a request (VC->HOST) */
typedef struct
{
int32_t count; /* Success value */
void *callback;
void *cookie;
} VC_AUDIO_COMPLETE_T;
/* Message header for all messages in HOST->VC direction */
typedef struct
{
int32_t type; /* Message type (VC_AUDIO_MSG_TYPE) */
union
{
VC_AUDIO_CONFIG_T config;
VC_AUDIO_CONTROL_T control;
VC_AUDIO_OPEN_T open;
VC_AUDIO_CLOSE_T close;
VC_AUDIO_START_T start;
VC_AUDIO_STOP_T stop;
VC_AUDIO_WRITE_T write;
VC_AUDIO_RESULT_T result;
VC_AUDIO_COMPLETE_T complete;
} u;
} VC_AUDIO_MSG_T;
#endif /* _VC_AUDIO_DEFS_H_ */
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