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 <fcntl.h>
18 #include <errno.h>
19
20 #include <cutils/log.h>
21 #include <cutils/native_handle.h>
22
23 #include <hardware/tv_input.h>
24
25 /*****************************************************************************/
26
27 typedef struct tv_input_private {
28 tv_input_device_t device;
29
30 // Callback related data
31 const tv_input_callback_ops_t* callback;
32 void* callback_data;
33 } tv_input_private_t;
34
35 static int tv_input_device_open(const struct hw_module_t* module,
36 const char* name, struct hw_device_t** device);
37
38 static struct hw_module_methods_t tv_input_module_methods = {
39 open: tv_input_device_open
40 };
41
42 tv_input_module_t HAL_MODULE_INFO_SYM = {
43 common: {
44 tag: HARDWARE_MODULE_TAG,
45 version_major: 0,
46 version_minor: 1,
47 id: TV_INPUT_HARDWARE_MODULE_ID,
48 name: "Sample TV input module",
49 author: "The Android Open Source Project",
50 methods: &tv_input_module_methods,
51 }
52 };
53
54 /*****************************************************************************/
55
tv_input_initialize(struct tv_input_device * dev,const tv_input_callback_ops_t * callback,void * data)56 static int tv_input_initialize(struct tv_input_device* dev,
57 const tv_input_callback_ops_t* callback, void* data)
58 {
59 if (dev == NULL || callback == NULL) {
60 return -EINVAL;
61 }
62 tv_input_private_t* priv = (tv_input_private_t*)dev;
63 if (priv->callback != NULL) {
64 return -EEXIST;
65 }
66
67 priv->callback = callback;
68 priv->callback_data = data;
69
70 return 0;
71 }
72
tv_input_get_stream_configurations(const struct tv_input_device *,int,int *,const tv_stream_config_t **)73 static int tv_input_get_stream_configurations(
74 const struct tv_input_device*, int, int*, const tv_stream_config_t**)
75 {
76 return -EINVAL;
77 }
78
tv_input_open_stream(struct tv_input_device *,int,tv_stream_t *)79 static int tv_input_open_stream(struct tv_input_device*, int, tv_stream_t*)
80 {
81 return -EINVAL;
82 }
83
tv_input_close_stream(struct tv_input_device *,int,int)84 static int tv_input_close_stream(struct tv_input_device*, int, int)
85 {
86 return -EINVAL;
87 }
88
tv_input_request_capture(struct tv_input_device *,int,int,buffer_handle_t,uint32_t)89 static int tv_input_request_capture(
90 struct tv_input_device*, int, int, buffer_handle_t, uint32_t)
91 {
92 return -EINVAL;
93 }
94
tv_input_cancel_capture(struct tv_input_device *,int,int,uint32_t)95 static int tv_input_cancel_capture(struct tv_input_device*, int, int, uint32_t)
96 {
97 return -EINVAL;
98 }
99
100 /*****************************************************************************/
101
tv_input_device_close(struct hw_device_t * dev)102 static int tv_input_device_close(struct hw_device_t *dev)
103 {
104 tv_input_private_t* priv = (tv_input_private_t*)dev;
105 if (priv) {
106 free(priv);
107 }
108 return 0;
109 }
110
111 /*****************************************************************************/
112
tv_input_device_open(const struct hw_module_t * module,const char * name,struct hw_device_t ** device)113 static int tv_input_device_open(const struct hw_module_t* module,
114 const char* name, struct hw_device_t** device)
115 {
116 int status = -EINVAL;
117 if (!strcmp(name, TV_INPUT_DEFAULT_DEVICE)) {
118 tv_input_private_t* dev = (tv_input_private_t*)malloc(sizeof(*dev));
119
120 /* initialize our state here */
121 memset(dev, 0, sizeof(*dev));
122
123 /* initialize the procs */
124 dev->device.common.tag = HARDWARE_DEVICE_TAG;
125 dev->device.common.version = TV_INPUT_DEVICE_API_VERSION_0_1;
126 dev->device.common.module = const_cast<hw_module_t*>(module);
127 dev->device.common.close = tv_input_device_close;
128
129 dev->device.initialize = tv_input_initialize;
130 dev->device.get_stream_configurations =
131 tv_input_get_stream_configurations;
132 dev->device.open_stream = tv_input_open_stream;
133 dev->device.close_stream = tv_input_close_stream;
134 dev->device.request_capture = tv_input_request_capture;
135 dev->device.cancel_capture = tv_input_cancel_capture;
136
137 *device = &dev->device.common;
138 status = 0;
139 }
140 return status;
141 }
142