1 /*
2 * Copyright (C) 2009 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 "TIOMXPlugin.h"
18
19 #include <dlfcn.h>
20
21 #include <HardwareAPI.h>
22
23 namespace android {
24
createOMXPlugin()25 OMXPluginBase *createOMXPlugin() {
26 return new TIOMXPlugin;
27 }
28
TIOMXPlugin()29 TIOMXPlugin::TIOMXPlugin()
30 : mLibHandle(dlopen("libOMX_Core.so", RTLD_NOW)),
31 mInit(NULL),
32 mDeinit(NULL),
33 mComponentNameEnum(NULL),
34 mGetHandle(NULL),
35 mFreeHandle(NULL),
36 mGetRolesOfComponentHandle(NULL) {
37 if (mLibHandle != NULL) {
38 mInit = (InitFunc)dlsym(mLibHandle, "TIOMX_Init");
39 mDeinit = (DeinitFunc)dlsym(mLibHandle, "TIOMX_Deinit");
40
41 mComponentNameEnum =
42 (ComponentNameEnumFunc)dlsym(mLibHandle, "TIOMX_ComponentNameEnum");
43
44 mGetHandle = (GetHandleFunc)dlsym(mLibHandle, "TIOMX_GetHandle");
45 mFreeHandle = (FreeHandleFunc)dlsym(mLibHandle, "TIOMX_FreeHandle");
46
47 mGetRolesOfComponentHandle =
48 (GetRolesOfComponentFunc)dlsym(
49 mLibHandle, "TIOMX_GetRolesOfComponent");
50
51 (*mInit)();
52 }
53 }
54
~TIOMXPlugin()55 TIOMXPlugin::~TIOMXPlugin() {
56 if (mLibHandle != NULL) {
57 (*mDeinit)();
58
59 dlclose(mLibHandle);
60 mLibHandle = NULL;
61 }
62 }
63
makeComponentInstance(const char * name,const OMX_CALLBACKTYPE * callbacks,OMX_PTR appData,OMX_COMPONENTTYPE ** component)64 OMX_ERRORTYPE TIOMXPlugin::makeComponentInstance(
65 const char *name,
66 const OMX_CALLBACKTYPE *callbacks,
67 OMX_PTR appData,
68 OMX_COMPONENTTYPE **component) {
69 if (mLibHandle == NULL) {
70 return OMX_ErrorUndefined;
71 }
72
73 return (*mGetHandle)(
74 reinterpret_cast<OMX_HANDLETYPE *>(component),
75 const_cast<char *>(name),
76 appData, const_cast<OMX_CALLBACKTYPE *>(callbacks));
77 }
78
destroyComponentInstance(OMX_COMPONENTTYPE * component)79 OMX_ERRORTYPE TIOMXPlugin::destroyComponentInstance(
80 OMX_COMPONENTTYPE *component) {
81 if (mLibHandle == NULL) {
82 return OMX_ErrorUndefined;
83 }
84
85 return (*mFreeHandle)(reinterpret_cast<OMX_HANDLETYPE *>(component));
86 }
87
enumerateComponents(OMX_STRING name,size_t size,OMX_U32 index)88 OMX_ERRORTYPE TIOMXPlugin::enumerateComponents(
89 OMX_STRING name,
90 size_t size,
91 OMX_U32 index) {
92 if (mLibHandle == NULL) {
93 return OMX_ErrorUndefined;
94 }
95
96 return (*mComponentNameEnum)(name, size, index);
97 }
98
getRolesOfComponent(const char * name,Vector<String8> * roles)99 OMX_ERRORTYPE TIOMXPlugin::getRolesOfComponent(
100 const char *name,
101 Vector<String8> *roles) {
102 roles->clear();
103
104 if (mLibHandle == NULL) {
105 return OMX_ErrorUndefined;
106 }
107
108 OMX_U32 numRoles;
109 OMX_ERRORTYPE err = (*mGetRolesOfComponentHandle)(
110 const_cast<OMX_STRING>(name), &numRoles, NULL);
111
112 if (err != OMX_ErrorNone) {
113 return err;
114 }
115
116 if (numRoles > 0) {
117 OMX_U8 **array = new OMX_U8 *[numRoles];
118 for (OMX_U32 i = 0; i < numRoles; ++i) {
119 array[i] = new OMX_U8[OMX_MAX_STRINGNAME_SIZE];
120 }
121
122 OMX_U32 numRoles2;
123 err = (*mGetRolesOfComponentHandle)(
124 const_cast<OMX_STRING>(name), &numRoles2, array);
125
126 if (err == OMX_ErrorNone && numRoles != numRoles2) {
127 err = OMX_ErrorUndefined;
128 }
129
130 for (OMX_U32 i = 0; i < numRoles; ++i) {
131 if (err == OMX_ErrorNone) {
132 String8 s((const char *)array[i]);
133 roles->push(s);
134 }
135
136 delete[] array[i];
137 array[i] = NULL;
138 }
139
140 delete[] array;
141 array = NULL;
142 }
143
144 return err;
145 }
146
147 } // namespace android
148