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 //#define LOG_NDEBUG 0
18 #define LOG_TAG "OMXMaster"
19 #include <utils/Log.h>
20
21 #include "OMXMaster.h"
22
23 #include "SoftOMXPlugin.h"
24
25 #include <dlfcn.h>
26
27 #include <media/stagefright/foundation/ADebug.h>
28
29 namespace android {
30
OMXMaster()31 OMXMaster::OMXMaster()
32 : mVendorLibHandle(NULL) {
33 addVendorPlugin();
34 addPlugin(new SoftOMXPlugin);
35 }
36
~OMXMaster()37 OMXMaster::~OMXMaster() {
38 clearPlugins();
39
40 if (mVendorLibHandle != NULL) {
41 dlclose(mVendorLibHandle);
42 mVendorLibHandle = NULL;
43 }
44 }
45
addVendorPlugin()46 void OMXMaster::addVendorPlugin() {
47 addPlugin("libstagefrighthw.so");
48 }
49
addPlugin(const char * libname)50 void OMXMaster::addPlugin(const char *libname) {
51 mVendorLibHandle = dlopen(libname, RTLD_NOW);
52
53 if (mVendorLibHandle == NULL) {
54 return;
55 }
56
57 typedef OMXPluginBase *(*CreateOMXPluginFunc)();
58 CreateOMXPluginFunc createOMXPlugin =
59 (CreateOMXPluginFunc)dlsym(
60 mVendorLibHandle, "createOMXPlugin");
61 if (!createOMXPlugin)
62 createOMXPlugin = (CreateOMXPluginFunc)dlsym(
63 mVendorLibHandle, "_ZN7android15createOMXPluginEv");
64
65 if (createOMXPlugin) {
66 addPlugin((*createOMXPlugin)());
67 }
68 }
69
addPlugin(OMXPluginBase * plugin)70 void OMXMaster::addPlugin(OMXPluginBase *plugin) {
71 Mutex::Autolock autoLock(mLock);
72
73 mPlugins.push_back(plugin);
74
75 OMX_U32 index = 0;
76
77 char name[128];
78 OMX_ERRORTYPE err;
79 while ((err = plugin->enumerateComponents(
80 name, sizeof(name), index++)) == OMX_ErrorNone) {
81 String8 name8(name);
82
83 if (mPluginByComponentName.indexOfKey(name8) >= 0) {
84 ALOGE("A component of name '%s' already exists, ignoring this one.",
85 name8.string());
86
87 continue;
88 }
89
90 mPluginByComponentName.add(name8, plugin);
91 }
92
93 if (err != OMX_ErrorNoMore) {
94 ALOGE("OMX plugin failed w/ error 0x%08x after registering %zu "
95 "components", err, mPluginByComponentName.size());
96 }
97 }
98
clearPlugins()99 void OMXMaster::clearPlugins() {
100 Mutex::Autolock autoLock(mLock);
101
102 typedef void (*DestroyOMXPluginFunc)(OMXPluginBase*);
103 DestroyOMXPluginFunc destroyOMXPlugin =
104 (DestroyOMXPluginFunc)dlsym(
105 mVendorLibHandle, "destroyOMXPlugin");
106
107 mPluginByComponentName.clear();
108
109 for (List<OMXPluginBase *>::iterator it = mPlugins.begin();
110 it != mPlugins.end(); ++it) {
111 if (destroyOMXPlugin)
112 destroyOMXPlugin(*it);
113 else
114 delete *it;
115 *it = NULL;
116 }
117
118 mPlugins.clear();
119 }
120
makeComponentInstance(const char * name,const OMX_CALLBACKTYPE * callbacks,OMX_PTR appData,OMX_COMPONENTTYPE ** component)121 OMX_ERRORTYPE OMXMaster::makeComponentInstance(
122 const char *name,
123 const OMX_CALLBACKTYPE *callbacks,
124 OMX_PTR appData,
125 OMX_COMPONENTTYPE **component) {
126 Mutex::Autolock autoLock(mLock);
127
128 *component = NULL;
129
130 ssize_t index = mPluginByComponentName.indexOfKey(String8(name));
131
132 if (index < 0) {
133 return OMX_ErrorInvalidComponentName;
134 }
135
136 OMXPluginBase *plugin = mPluginByComponentName.valueAt(index);
137 OMX_ERRORTYPE err =
138 plugin->makeComponentInstance(name, callbacks, appData, component);
139
140 if (err != OMX_ErrorNone) {
141 return err;
142 }
143
144 mPluginByInstance.add(*component, plugin);
145
146 return err;
147 }
148
destroyComponentInstance(OMX_COMPONENTTYPE * component)149 OMX_ERRORTYPE OMXMaster::destroyComponentInstance(
150 OMX_COMPONENTTYPE *component) {
151 Mutex::Autolock autoLock(mLock);
152
153 ssize_t index = mPluginByInstance.indexOfKey(component);
154
155 if (index < 0) {
156 return OMX_ErrorBadParameter;
157 }
158
159 OMXPluginBase *plugin = mPluginByInstance.valueAt(index);
160 mPluginByInstance.removeItemsAt(index);
161
162 return plugin->destroyComponentInstance(component);
163 }
164
enumerateComponents(OMX_STRING name,size_t size,OMX_U32 index)165 OMX_ERRORTYPE OMXMaster::enumerateComponents(
166 OMX_STRING name,
167 size_t size,
168 OMX_U32 index) {
169 Mutex::Autolock autoLock(mLock);
170
171 size_t numComponents = mPluginByComponentName.size();
172
173 if (index >= numComponents) {
174 return OMX_ErrorNoMore;
175 }
176
177 const String8 &name8 = mPluginByComponentName.keyAt(index);
178
179 CHECK(size >= 1 + name8.size());
180 strcpy(name, name8.string());
181
182 return OMX_ErrorNone;
183 }
184
getRolesOfComponent(const char * name,Vector<String8> * roles)185 OMX_ERRORTYPE OMXMaster::getRolesOfComponent(
186 const char *name,
187 Vector<String8> *roles) {
188 Mutex::Autolock autoLock(mLock);
189
190 roles->clear();
191
192 ssize_t index = mPluginByComponentName.indexOfKey(String8(name));
193
194 if (index < 0) {
195 return OMX_ErrorInvalidComponentName;
196 }
197
198 OMXPluginBase *plugin = mPluginByComponentName.valueAt(index);
199 return plugin->getRolesOfComponent(name, roles);
200 }
201
202 } // namespace android
203