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