1/* 2 * Copyright 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <errno.h> 18#include <fcntl.h> 19#include <malloc.h> 20 21#include <cutils/native_handle.h> 22#include <log/log.h> 23 24#include <hardware/tv_input.h> 25 26/*****************************************************************************/ 27 28typedef struct tv_input_private { 29 tv_input_device_t device; 30 31 // Callback related data 32 const tv_input_callback_ops_t* callback; 33 void* callback_data; 34} tv_input_private_t; 35 36static int tv_input_device_open(const struct hw_module_t* module, 37 const char* name, struct hw_device_t** device); 38 39static struct hw_module_methods_t tv_input_module_methods = { 40 .open = tv_input_device_open 41}; 42 43tv_input_module_t HAL_MODULE_INFO_SYM = { 44 .common = { 45 .tag = HARDWARE_MODULE_TAG, 46 .version_major = 0, 47 .version_minor = 1, 48 .id = TV_INPUT_HARDWARE_MODULE_ID, 49 .name = "Sample TV input module", 50 .author = "The Android Open Source Project", 51 .methods = &tv_input_module_methods, 52 } 53}; 54 55/*****************************************************************************/ 56 57static int tv_input_initialize(struct tv_input_device* dev, 58 const tv_input_callback_ops_t* callback, void* data) 59{ 60 if (dev == NULL || callback == NULL) { 61 return -EINVAL; 62 } 63 tv_input_private_t* priv = (tv_input_private_t*)dev; 64 if (priv->callback != NULL) { 65 return -EEXIST; 66 } 67 68 priv->callback = callback; 69 priv->callback_data = data; 70 71 return 0; 72} 73 74static int tv_input_get_stream_configurations( 75 const struct tv_input_device*, int, int*, const tv_stream_config_t**) 76{ 77 return -EINVAL; 78} 79 80static int tv_input_open_stream(struct tv_input_device*, int, tv_stream_t*) 81{ 82 return -EINVAL; 83} 84 85static int tv_input_close_stream(struct tv_input_device*, int, int) 86{ 87 return -EINVAL; 88} 89 90static int tv_input_request_capture( 91 struct tv_input_device*, int, int, buffer_handle_t, uint32_t) 92{ 93 return -EINVAL; 94} 95 96static int tv_input_cancel_capture(struct tv_input_device*, int, int, uint32_t) 97{ 98 return -EINVAL; 99} 100 101/*****************************************************************************/ 102 103static int tv_input_device_close(struct hw_device_t *dev) 104{ 105 tv_input_private_t* priv = (tv_input_private_t*)dev; 106 if (priv) { 107 free(priv); 108 } 109 return 0; 110} 111 112/*****************************************************************************/ 113 114static int tv_input_device_open(const struct hw_module_t* module, 115 const char* name, struct hw_device_t** device) 116{ 117 int status = -EINVAL; 118 if (!strcmp(name, TV_INPUT_DEFAULT_DEVICE)) { 119 tv_input_private_t* dev = (tv_input_private_t*)malloc(sizeof(*dev)); 120 121 /* initialize our state here */ 122 memset(dev, 0, sizeof(*dev)); 123 124 /* initialize the procs */ 125 dev->device.common.tag = HARDWARE_DEVICE_TAG; 126 dev->device.common.version = TV_INPUT_DEVICE_API_VERSION_0_1; 127 dev->device.common.module = const_cast<hw_module_t*>(module); 128 dev->device.common.close = tv_input_device_close; 129 130 dev->device.initialize = tv_input_initialize; 131 dev->device.get_stream_configurations = 132 tv_input_get_stream_configurations; 133 dev->device.open_stream = tv_input_open_stream; 134 dev->device.close_stream = tv_input_close_stream; 135 dev->device.request_capture = tv_input_request_capture; 136 dev->device.cancel_capture = tv_input_cancel_capture; 137 138 *device = &dev->device.common; 139 status = 0; 140 } 141 return status; 142} 143