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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "OMXMaster"
#include <utils/Log.h>
#include "OMXMaster.h"
#include "SoftOMXPlugin.h"
#include <dlfcn.h>
#include <media/stagefright/foundation/ADebug.h>
namespace android {
OMXMaster::OMXMaster()
: mVendorLibHandle(NULL) {
addVendorPlugin();
addPlugin(new SoftOMXPlugin);
}
OMXMaster::~OMXMaster() {
clearPlugins();
if (mVendorLibHandle != NULL) {
dlclose(mVendorLibHandle);
mVendorLibHandle = NULL;
}
}
void OMXMaster::addVendorPlugin() {
addPlugin("libstagefrighthw.so");
}
void OMXMaster::addPlugin(const char *libname) {
mVendorLibHandle = dlopen(libname, RTLD_NOW);
if (mVendorLibHandle == NULL) {
return;
}
typedef OMXPluginBase *(*CreateOMXPluginFunc)();
CreateOMXPluginFunc createOMXPlugin =
(CreateOMXPluginFunc)dlsym(
mVendorLibHandle, "createOMXPlugin");
if (!createOMXPlugin)
createOMXPlugin = (CreateOMXPluginFunc)dlsym(
mVendorLibHandle, "_ZN7android15createOMXPluginEv");
if (createOMXPlugin) {
addPlugin((*createOMXPlugin)());
}
}
void OMXMaster::addPlugin(OMXPluginBase *plugin) {
Mutex::Autolock autoLock(mLock);
mPlugins.push_back(plugin);
OMX_U32 index = 0;
char name[128];
OMX_ERRORTYPE err;
while ((err = plugin->enumerateComponents(
name, sizeof(name), index++)) == OMX_ErrorNone) {
String8 name8(name);
if (mPluginByComponentName.indexOfKey(name8) >= 0) {
ALOGE("A component of name '%s' already exists, ignoring this one.",
name8.string());
continue;
}
mPluginByComponentName.add(name8, plugin);
}
if (err != OMX_ErrorNoMore) {
ALOGE("OMX plugin failed w/ error 0x%08x after registering %zu "
"components", err, mPluginByComponentName.size());
}
}
void OMXMaster::clearPlugins() {
Mutex::Autolock autoLock(mLock);
typedef void (*DestroyOMXPluginFunc)(OMXPluginBase*);
DestroyOMXPluginFunc destroyOMXPlugin =
(DestroyOMXPluginFunc)dlsym(
mVendorLibHandle, "destroyOMXPlugin");
mPluginByComponentName.clear();
for (List<OMXPluginBase *>::iterator it = mPlugins.begin();
it != mPlugins.end(); ++it) {
if (destroyOMXPlugin)
destroyOMXPlugin(*it);
else
delete *it;
*it = NULL;
}
mPlugins.clear();
}
OMX_ERRORTYPE OMXMaster::makeComponentInstance(
const char *name,
const OMX_CALLBACKTYPE *callbacks,
OMX_PTR appData,
OMX_COMPONENTTYPE **component) {
Mutex::Autolock autoLock(mLock);
*component = NULL;
ssize_t index = mPluginByComponentName.indexOfKey(String8(name));
if (index < 0) {
return OMX_ErrorInvalidComponentName;
}
OMXPluginBase *plugin = mPluginByComponentName.valueAt(index);
OMX_ERRORTYPE err =
plugin->makeComponentInstance(name, callbacks, appData, component);
if (err != OMX_ErrorNone) {
return err;
}
mPluginByInstance.add(*component, plugin);
return err;
}
OMX_ERRORTYPE OMXMaster::destroyComponentInstance(
OMX_COMPONENTTYPE *component) {
Mutex::Autolock autoLock(mLock);
ssize_t index = mPluginByInstance.indexOfKey(component);
if (index < 0) {
return OMX_ErrorBadParameter;
}
OMXPluginBase *plugin = mPluginByInstance.valueAt(index);
mPluginByInstance.removeItemsAt(index);
return plugin->destroyComponentInstance(component);
}
OMX_ERRORTYPE OMXMaster::enumerateComponents(
OMX_STRING name,
size_t size,
OMX_U32 index) {
Mutex::Autolock autoLock(mLock);
size_t numComponents = mPluginByComponentName.size();
if (index >= numComponents) {
return OMX_ErrorNoMore;
}
const String8 &name8 = mPluginByComponentName.keyAt(index);
CHECK(size >= 1 + name8.size());
strcpy(name, name8.string());
return OMX_ErrorNone;
}
OMX_ERRORTYPE OMXMaster::getRolesOfComponent(
const char *name,
Vector<String8> *roles) {
Mutex::Autolock autoLock(mLock);
roles->clear();
ssize_t index = mPluginByComponentName.indexOfKey(String8(name));
if (index < 0) {
return OMX_ErrorInvalidComponentName;
}
OMXPluginBase *plugin = mPluginByComponentName.valueAt(index);
return plugin->getRolesOfComponent(name, roles);
}
} // namespace android
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