1 /* 2 * Copyright (c) 2017 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 6 * 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 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation. nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #ifndef QHDMI_CEC_H 30 #define QHDMI_CEC_H 31 32 #include <hardware/hdmi_cec.h> 33 #include <sys/poll.h> 34 #include <sys/prctl.h> 35 #include <sys/socket.h> 36 #include <sys/resource.h> 37 #include <linux/netlink.h> 38 #include <thread> 39 #include <vector> 40 41 namespace qhdmicec { 42 43 static const int MAX_STRING_LENGTH = 1024; 44 45 struct cec_callback_t { 46 // Function in HDMI service to call back on CEC messages 47 event_callback_t callback_func; 48 // This stores the object to pass back to the framework 49 void* callback_arg; 50 51 }; 52 53 struct eventData; 54 55 struct cec_context_t { 56 hdmi_cec_device_t device; // Device for HW module 57 cec_callback_t callback; // Struct storing callback object 58 bool enabled; 59 bool arc_enabled; 60 bool system_control; // If true, HAL/driver handle CEC messages 61 int fb_num; // Framebuffer node for HDMI 62 std::string fb_sysfs_path; 63 hdmi_port_info *port_info; // HDMI port info 64 65 // Logical address is stored in an array, the index of the array is the 66 // logical address and the value in the index shows whether it is set or not 67 int logical_address[CEC_ADDR_BROADCAST]; 68 int version; 69 uint32_t vendor_id; 70 71 std::vector<pollfd> poll_fds; // poll fds for cec message monitor and exit signal 72 // on cec message monitor thread 73 int exit_fd = -1; 74 bool cec_exit_thread = false; 75 std::thread hdmi_cec_monitor; // hdmi plugin monitor thread variable 76 char data[MAX_STRING_LENGTH] = {0}; 77 78 std::vector<std::string> node_list = {}; 79 std::vector<eventData> event_data_list = {}; 80 }; 81 82 struct eventData { 83 const char* event_name = NULL; 84 void (*event_parser)(cec_context_t* ctx, uint32_t node_event) = NULL; 85 }; 86 87 void cec_receive_message(cec_context_t *ctx, char *msg, ssize_t len); 88 void cec_hdmi_hotplug(cec_context_t *ctx, int connected); 89 90 }; //namespace 91 #endif /* end of include guard: QHDMI_CEC_H */ 92
