1 /* 2 * Copyright (c) 2012, Broadcom Europe Ltd 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. Neither the name of the copyright holder nor the 13 * names of its contributors may be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY 20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _VC_AUDIO_DEFS_H_ 31 #define _VC_AUDIO_DEFS_H_ 32 33 #define VC_AUDIOSERV_MIN_VER 1 34 #define VC_AUDIOSERV_VER 2 35 36 /* FourCC code used for VCHI connection */ 37 #define VC_AUDIO_SERVER_NAME MAKE_FOURCC("AUDS") 38 39 /* Maximum message length */ 40 #define VC_AUDIO_MAX_MSG_LEN (sizeof( VC_AUDIO_MSG_T )) 41 42 /* 43 * List of screens that are currently supported 44 * All message types supported for HOST->VC direction 45 */ 46 typedef enum 47 { 48 VC_AUDIO_MSG_TYPE_RESULT, /* Generic result */ 49 VC_AUDIO_MSG_TYPE_COMPLETE, /* playback of samples complete */ 50 VC_AUDIO_MSG_TYPE_CONFIG, /* Configure */ 51 VC_AUDIO_MSG_TYPE_CONTROL, /* control */ 52 VC_AUDIO_MSG_TYPE_OPEN, /* open */ 53 VC_AUDIO_MSG_TYPE_CLOSE, /* close/shutdown */ 54 VC_AUDIO_MSG_TYPE_START, /* start output (i.e. resume) */ 55 VC_AUDIO_MSG_TYPE_STOP, /* stop output (i.e. pause) */ 56 VC_AUDIO_MSG_TYPE_WRITE, /* write samples */ 57 VC_AUDIO_MSG_TYPE_MAX 58 59 } VC_AUDIO_MSG_TYPE; 60 61 static const char *vc_audio_msg_type_names[] = { 62 "VC_AUDIO_MSG_TYPE_RESULT", 63 "VC_AUDIO_MSG_TYPE_COMPLETE", 64 "VC_AUDIO_MSG_TYPE_CONFIG", 65 "VC_AUDIO_MSG_TYPE_CONTROL", 66 "VC_AUDIO_MSG_TYPE_OPEN", 67 "VC_AUDIO_MSG_TYPE_CLOSE", 68 "VC_AUDIO_MSG_TYPE_START", 69 "VC_AUDIO_MSG_TYPE_STOP", 70 "VC_AUDIO_MSG_TYPE_WRITE", 71 "VC_AUDIO_MSG_TYPE_MAX" 72 }; 73 74 /* configure the audio */ 75 typedef struct 76 { 77 uint32_t channels; 78 uint32_t samplerate; 79 uint32_t bps; 80 81 } VC_AUDIO_CONFIG_T; 82 83 typedef struct 84 { 85 uint32_t volume; 86 uint32_t dest; 87 88 } VC_AUDIO_CONTROL_T; 89 90 typedef struct 91 { 92 uint32_t dummy; 93 94 } VC_AUDIO_OPEN_T; 95 96 typedef struct 97 { 98 uint32_t dummy; 99 100 } VC_AUDIO_CLOSE_T; 101 102 typedef struct 103 { 104 uint32_t dummy; 105 106 } VC_AUDIO_START_T; 107 108 typedef struct 109 { 110 uint32_t draining; 111 112 } VC_AUDIO_STOP_T; 113 114 typedef struct 115 { 116 uint32_t count; /* in bytes */ 117 void *callback; 118 void *cookie; 119 uint16_t silence; 120 uint16_t max_packet; 121 } VC_AUDIO_WRITE_T; 122 123 /* Generic result for a request (VC->HOST) */ 124 typedef struct 125 { 126 int32_t success; /* Success value */ 127 128 } VC_AUDIO_RESULT_T; 129 130 /* Generic result for a request (VC->HOST) */ 131 typedef struct 132 { 133 int32_t count; /* Success value */ 134 void *callback; 135 void *cookie; 136 } VC_AUDIO_COMPLETE_T; 137 138 /* Message header for all messages in HOST->VC direction */ 139 typedef struct 140 { 141 int32_t type; /* Message type (VC_AUDIO_MSG_TYPE) */ 142 union 143 { 144 VC_AUDIO_CONFIG_T config; 145 VC_AUDIO_CONTROL_T control; 146 VC_AUDIO_OPEN_T open; 147 VC_AUDIO_CLOSE_T close; 148 VC_AUDIO_START_T start; 149 VC_AUDIO_STOP_T stop; 150 VC_AUDIO_WRITE_T write; 151 VC_AUDIO_RESULT_T result; 152 VC_AUDIO_COMPLETE_T complete; 153 } u; 154 } VC_AUDIO_MSG_T; 155 156 #endif /* _VC_AUDIO_DEFS_H_ */ 157