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 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * 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 * 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 28 #ifndef _VC_AUDIO_DEFS_H_ 29 #define _VC_AUDIO_DEFS_H_ 30 31 #define VC_AUDIOSERV_MIN_VER 1 32 #define VC_AUDIOSERV_VER 2 33 34 // FourCC code used for VCHI connection 35 #define VC_AUDIO_SERVER_NAME MAKE_FOURCC("AUDS") 36 #define VC_AUDIO_WRITE_COOKIE1 MAKE_FOURCC("BCMA") 37 #define VC_AUDIO_WRITE_COOKIE2 MAKE_FOURCC("DATA") 38 39 // Maximum message length 40 #define VC_AUDIO_MAX_MSG_LEN (sizeof( VC_AUDIO_MSG_T )) 41 42 // List of screens that are currently supported 43 // All message types supported for HOST->VC direction 44 typedef enum 45 { 46 VC_AUDIO_MSG_TYPE_RESULT, // Generic result 47 VC_AUDIO_MSG_TYPE_COMPLETE, // playback of samples complete 48 VC_AUDIO_MSG_TYPE_CONFIG, // Configure 49 VC_AUDIO_MSG_TYPE_CONTROL, // control 50 VC_AUDIO_MSG_TYPE_OPEN, // open 51 VC_AUDIO_MSG_TYPE_CLOSE, // close/shutdown 52 VC_AUDIO_MSG_TYPE_START, // start output (i.e. resume) 53 VC_AUDIO_MSG_TYPE_STOP, // stop output (i.e. pause) 54 VC_AUDIO_MSG_TYPE_WRITE, // write samples 55 VC_AUDIO_MSG_TYPE_MAX 56 57 } VC_AUDIO_MSG_TYPE; 58 59 #if 0 60 static const char *vc_audio_msg_type_names[] = { 61 "VC_AUDIO_MSG_TYPE_RESULT", 62 "VC_AUDIO_MSG_TYPE_COMPLETE", 63 "VC_AUDIO_MSG_TYPE_CONFIG", 64 "VC_AUDIO_MSG_TYPE_CONTROL", 65 "VC_AUDIO_MSG_TYPE_OPEN", 66 "VC_AUDIO_MSG_TYPE_CLOSE", 67 "VC_AUDIO_MSG_TYPE_START", 68 "VC_AUDIO_MSG_TYPE_STOP", 69 "VC_AUDIO_MSG_TYPE_WRITE", 70 "VC_AUDIO_MSG_TYPE_MAX" 71 }; 72 #endif 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 // audio 91 typedef struct 92 { 93 uint32_t dummy; 94 95 } VC_AUDIO_OPEN_T; 96 97 // audio 98 typedef struct 99 { 100 uint32_t dummy; 101 102 } VC_AUDIO_CLOSE_T; 103 // audio 104 typedef struct 105 { 106 uint32_t dummy; 107 108 } VC_AUDIO_START_T; 109 // audio 110 typedef struct 111 { 112 uint32_t draining; 113 114 } VC_AUDIO_STOP_T; 115 116 // configure the write audio samples 117 typedef struct 118 { 119 uint32_t count; // in bytes 120 uint32_t cookie1; 121 uint32_t cookie2; 122 uint16_t silence; 123 uint16_t max_packet; 124 } VC_AUDIO_WRITE_T; 125 126 // Generic result for a request (VC->HOST) 127 typedef struct 128 { 129 int32_t success; // Success value 130 131 } VC_AUDIO_RESULT_T; 132 133 // Generic result for a request (VC->HOST) 134 typedef struct 135 { 136 int32_t count; // Success value 137 uint32_t cookie1; 138 uint32_t cookie2; 139 } VC_AUDIO_COMPLETE_T; 140 141 // Message header for all messages in HOST->VC direction 142 typedef struct 143 { 144 int32_t type; // Message type (VC_AUDIO_MSG_TYPE) 145 union 146 { 147 VC_AUDIO_CONFIG_T config; 148 VC_AUDIO_CONTROL_T control; 149 VC_AUDIO_OPEN_T open; 150 VC_AUDIO_CLOSE_T close; 151 VC_AUDIO_START_T start; 152 VC_AUDIO_STOP_T stop; 153 VC_AUDIO_WRITE_T write; 154 VC_AUDIO_RESULT_T result; 155 VC_AUDIO_COMPLETE_T complete; 156 } u; 157 } VC_AUDIO_MSG_T; 158 159 160 #endif // _VC_AUDIO_DEFS_H_ 161