1 /*-------------------------------------------------------------------------- 2 Copyright (c) 2010, The Linux Foundation. All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions are met: 6 * Redistributions of source code must retain the above copyright 7 notice, this list of conditions and the following disclaimer. 8 * Redistributions in binary form must reproduce the above copyright 9 notice, this list of conditions and the following disclaimer in the 10 documentation and/or other materials provided with the distribution. 11 * Neither the name of The Linux Foundation nor 12 the names of its contributors may be used to endorse or promote 13 products derived from this software without specific prior written 14 permission. 15 16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 20 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 21 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 23 OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 25 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 26 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 --------------------------------------------------------------------------*/ 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 32 #include <fcntl.h> 33 #include <errno.h> 34 35 #include <aenc_svr.h> 36 37 /** 38 @brief This function processes posted messages 39 40 Once thread is being spawned, this function is run to 41 start processing commands posted by client 42 43 @param info pointer to context 44 45 */ 46 void *omx_aac_msg(void *info) 47 { 48 struct aac_ipc_info *aac_info = (struct aac_ipc_info*)info; 49 unsigned char id; 50 ssize_t n; 51 52 DEBUG_DETAIL("\n%s: message thread start\n", __FUNCTION__); 53 while (!aac_info->dead) 54 { 55 n = read(aac_info->pipe_in, &id, 1); 56 if (0 == n) break; 57 if (1 == n) 58 { 59 DEBUG_DETAIL("\n%s-->pipe_in=%d pipe_out=%d\n", 60 aac_info->thread_name, 61 aac_info->pipe_in, 62 aac_info->pipe_out); 63 64 aac_info->process_msg_cb(aac_info->client_data, id); 65 } 66 if ((n < 0) && (errno != EINTR)) break; 67 } 68 DEBUG_DETAIL("%s: message thread stop\n", __FUNCTION__); 69 70 return 0; 71 } 72 73 void *omx_aac_events(void *info) 74 { 75 struct aac_ipc_info *aac_info = (struct aac_ipc_info*)info; 76 unsigned char id = 0; 77 78 DEBUG_DETAIL("%s: message thread start\n", aac_info->thread_name); 79 aac_info->process_msg_cb(aac_info->client_data, id); 80 DEBUG_DETAIL("%s: message thread stop\n", aac_info->thread_name); 81 return 0; 82 } 83 84 /** 85 @brief This function starts command server 86 87 @param cb pointer to callback function from the client 88 @param client_data reference client wants to get back 89 through callback 90 @return handle to msging thread 91 */ 92 struct aac_ipc_info *omx_aac_thread_create( 93 message_func cb, 94 void* client_data, 95 char* th_name) 96 { 97 int r; 98 int fds[2]; 99 struct aac_ipc_info *aac_info; 100 101 aac_info = calloc(1, sizeof(struct aac_ipc_info)); 102 if (!aac_info) 103 { 104 return 0; 105 } 106 107 aac_info->client_data = client_data; 108 aac_info->process_msg_cb = cb; 109 strlcpy(aac_info->thread_name, th_name, sizeof(aac_info->thread_name)); 110 111 if (pipe(fds)) 112 { 113 DEBUG_PRINT_ERROR("\n%s: pipe creation failed\n", __FUNCTION__); 114 goto fail_pipe; 115 } 116 117 aac_info->pipe_in = fds[0]; 118 aac_info->pipe_out = fds[1]; 119 120 r = pthread_create(&aac_info->thr, 0, omx_aac_msg, aac_info); 121 if (r < 0) goto fail_thread; 122 123 DEBUG_DETAIL("Created thread for %s \n", aac_info->thread_name); 124 return aac_info; 125 126 127 fail_thread: 128 close(aac_info->pipe_in); 129 close(aac_info->pipe_out); 130 131 fail_pipe: 132 free(aac_info); 133 134 return 0; 135 } 136 137 /** 138 * @brief This function starts command server 139 * 140 * @param cb pointer to callback function from the client 141 * @param client_data reference client wants to get back 142 * through callback 143 * @return handle to msging thread 144 * */ 145 struct aac_ipc_info *omx_aac_event_thread_create( 146 message_func cb, 147 void* client_data, 148 char* th_name) 149 { 150 int r; 151 int fds[2]; 152 struct aac_ipc_info *aac_info; 153 154 aac_info = calloc(1, sizeof(struct aac_ipc_info)); 155 if (!aac_info) 156 { 157 return 0; 158 } 159 160 aac_info->client_data = client_data; 161 aac_info->process_msg_cb = cb; 162 strlcpy(aac_info->thread_name, th_name, sizeof(aac_info->thread_name)); 163 164 if (pipe(fds)) 165 { 166 DEBUG_PRINT("\n%s: pipe creation failed\n", __FUNCTION__); 167 goto fail_pipe; 168 } 169 170 aac_info->pipe_in = fds[0]; 171 aac_info->pipe_out = fds[1]; 172 173 r = pthread_create(&aac_info->thr, 0, omx_aac_events, aac_info); 174 if (r < 0) goto fail_thread; 175 176 DEBUG_DETAIL("Created thread for %s \n", aac_info->thread_name); 177 return aac_info; 178 179 180 fail_thread: 181 close(aac_info->pipe_in); 182 close(aac_info->pipe_out); 183 184 fail_pipe: 185 free(aac_info); 186 187 return 0; 188 } 189 190 void omx_aac_thread_stop(struct aac_ipc_info *aac_info) { 191 DEBUG_DETAIL("%s stop server\n", __FUNCTION__); 192 close(aac_info->pipe_in); 193 close(aac_info->pipe_out); 194 pthread_join(aac_info->thr,NULL); 195 aac_info->pipe_out = -1; 196 aac_info->pipe_in = -1; 197 DEBUG_DETAIL("%s: message thread close fds%d %d\n", aac_info->thread_name, 198 aac_info->pipe_in,aac_info->pipe_out); 199 free(aac_info); 200 } 201 202 void omx_aac_post_msg(struct aac_ipc_info *aac_info, unsigned char id) { 203 DEBUG_DETAIL("\n%s id=%d\n", __FUNCTION__,id); 204 205 write(aac_info->pipe_out, &id, 1); 206 } 207
