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/*****************************************************************************
* Copyright 2011 Broadcom Corporation. All rights reserved.
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2, available at
* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a
* license other than the GPL, without Broadcom's express prior written
* consent.
*****************************************************************************/
#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
*/
enum vc_audio_msg_type {
VC_AUDIO_MSG_TYPE_RESULT, // Generic result
VC_AUDIO_MSG_TYPE_COMPLETE, // Generic result
VC_AUDIO_MSG_TYPE_CONFIG, // Configure audio
VC_AUDIO_MSG_TYPE_CONTROL, // Configure audio
VC_AUDIO_MSG_TYPE_OPEN, // Configure audio
VC_AUDIO_MSG_TYPE_CLOSE, // Configure audio
VC_AUDIO_MSG_TYPE_START, // Configure audio
VC_AUDIO_MSG_TYPE_STOP, // Configure audio
VC_AUDIO_MSG_TYPE_WRITE, // Configure audio
VC_AUDIO_MSG_TYPE_MAX
};
/* configure the audio */
struct vc_audio_config {
u32 channels;
u32 samplerate;
u32 bps;
};
struct vc_audio_control {
u32 volume;
u32 dest;
};
struct vc_audio_open {
u32 dummy;
};
struct vc_audio_close {
u32 dummy;
};
struct vc_audio_start {
u32 dummy;
};
struct vc_audio_stop {
u32 draining;
};
/* configure the write audio samples */
struct vc_audio_write {
u32 count; // in bytes
u32 cookie1;
u32 cookie2;
s16 silence;
s16 max_packet;
};
/* Generic result for a request (VC->HOST) */
struct vc_audio_result {
s32 success; // Success value
};
/* Generic result for a request (VC->HOST) */
struct vc_audio_complete {
s32 count; // Success value
u32 cookie1;
u32 cookie2;
};
/* Message header for all messages in HOST->VC direction */
struct vc_audio_msg {
s32 type; /* Message type (VC_AUDIO_MSG_TYPE) */
union {
struct vc_audio_config config;
struct vc_audio_control control;
struct vc_audio_open open;
struct vc_audio_close close;
struct vc_audio_start start;
struct vc_audio_stop stop;
struct vc_audio_write write;
struct vc_audio_result result;
struct vc_audio_complete complete;
} u;
};
#endif /* _VC_AUDIO_DEFS_H_ */
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