396 lines
13 KiB
C++
396 lines
13 KiB
C++
/**
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* @file media_plugin_example.cpp
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* @brief Example plugin for LLMedia API plugin system
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*
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* @cond
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* $LicenseInfo:firstyear=2008&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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* @endcond
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*/
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#include "linden_common.h"
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#include "llgl.h"
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#include "llplugininstance.h"
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#include "llpluginmessage.h"
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#include "llpluginmessageclasses.h"
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#include "media_plugin_base.h"
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#include <time.h>
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////////////////////////////////////////////////////////////////////////////////
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//
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class mediaPluginExample :
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public MediaPluginBase
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{
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public:
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mediaPluginExample(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data);
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~mediaPluginExample();
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/*virtual*/ void receiveMessage(const char* message_string);
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private:
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bool init();
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void update(F64 milliseconds);
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bool mFirstTime;
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time_t mLastUpdateTime;
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enum Constants { ENumObjects = 64 };
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unsigned char* mBackgroundPixels;
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int mColorR[ENumObjects];
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int mColorG[ENumObjects];
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int mColorB[ENumObjects];
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int mXpos[ENumObjects];
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int mYpos[ENumObjects];
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int mXInc[ENumObjects];
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int mYInc[ENumObjects];
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int mBlockSize[ENumObjects];
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};
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////////////////////////////////////////////////////////////////////////////////
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//
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mediaPluginExample::mediaPluginExample(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data) :
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MediaPluginBase(host_send_func, host_user_data)
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{
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mFirstTime = true;
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mTextureWidth = 0;
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mTextureHeight = 0;
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mWidth = 0;
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mHeight = 0;
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mDepth = 4;
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mPixels = 0;
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mLastUpdateTime = 0;
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mBackgroundPixels = 0;
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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mediaPluginExample::~mediaPluginExample()
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{
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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void mediaPluginExample::receiveMessage(const char* message_string)
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{
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// std::cerr << "MediaPluginWebKit::receiveMessage: received message: \"" << message_string << "\"" << std::endl;
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LLPluginMessage message_in;
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if (message_in.parse(message_string) >= 0)
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{
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std::string message_class = message_in.getClass();
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std::string message_name = message_in.getName();
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if (message_class == LLPLUGIN_MESSAGE_CLASS_BASE)
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{
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if (message_name == "init")
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{
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LLPluginMessage message("base", "init_response");
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LLSD versions = LLSD::emptyMap();
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versions[LLPLUGIN_MESSAGE_CLASS_BASE] = LLPLUGIN_MESSAGE_CLASS_BASE_VERSION;
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versions[LLPLUGIN_MESSAGE_CLASS_MEDIA] = LLPLUGIN_MESSAGE_CLASS_MEDIA_VERSION;
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versions[LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER] = LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER_VERSION;
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message.setValueLLSD("versions", versions);
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std::string plugin_version = "Example plugin 0.0.0";
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message.setValue("plugin_version", plugin_version);
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sendMessage(message);
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}
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else if (message_name == "idle")
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{
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// no response is necessary here.
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F64 time = message_in.getValueReal("time");
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// Convert time to milliseconds for update()
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update((int)(time * 1000.0f));
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}
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else if (message_name == "cleanup")
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{
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LLPluginMessage message("base", "goodbye");
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sendMessage(message);
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mDeleteMe = true;
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}
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else if (message_name == "force_exit")
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{
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mDeleteMe = true;
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}
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else if (message_name == "shm_added")
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{
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SharedSegmentInfo info;
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info.mAddress = message_in.getValuePointer("address");
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info.mSize = (size_t)message_in.getValueS32("size");
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std::string name = message_in.getValue("name");
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mSharedSegments.insert(SharedSegmentMap::value_type(name, info));
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}
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else if (message_name == "shm_remove")
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{
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std::string name = message_in.getValue("name");
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SharedSegmentMap::iterator iter = mSharedSegments.find(name);
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if (iter != mSharedSegments.end())
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{
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if (mPixels == iter->second.mAddress)
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{
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// This is the currently active pixel buffer. Make sure we stop drawing to it.
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mPixels = NULL;
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mTextureSegmentName.clear();
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}
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mSharedSegments.erase(iter);
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}
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else
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{
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// std::cerr << "MediaPluginWebKit::receiveMessage: unknown shared memory region!" << std::endl;
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}
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// Send the response so it can be cleaned up.
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LLPluginMessage message("base", "shm_remove_response");
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message.setValue("name", name);
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sendMessage(message);
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}
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else
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{
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// std::cerr << "MediaPluginWebKit::receiveMessage: unknown base message: " << message_name << std::endl;
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}
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}
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else if (message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA)
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{
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if (message_name == "init")
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{
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// Plugin gets to decide the texture parameters to use.
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mDepth = 4;
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LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "texture_params");
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message.setValueS32("default_width", 1024);
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message.setValueS32("default_height", 1024);
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message.setValueS32("depth", mDepth);
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message.setValueU32("internalformat", GL_RGB);
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message.setValueU32("format", GL_RGBA);
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message.setValueU32("type", GL_UNSIGNED_BYTE);
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message.setValueBoolean("coords_opengl", true);
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sendMessage(message);
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}
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else if (message_name == "size_change")
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{
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std::string name = message_in.getValue("name");
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S32 width = message_in.getValueS32("width");
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S32 height = message_in.getValueS32("height");
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S32 texture_width = message_in.getValueS32("texture_width");
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S32 texture_height = message_in.getValueS32("texture_height");
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if (!name.empty())
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{
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// Find the shared memory region with this name
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SharedSegmentMap::iterator iter = mSharedSegments.find(name);
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if (iter != mSharedSegments.end())
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{
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mPixels = (unsigned char*)iter->second.mAddress;
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mWidth = width;
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mHeight = height;
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mTextureWidth = texture_width;
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mTextureHeight = texture_height;
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};
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};
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LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "size_change_response");
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message.setValue("name", name);
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message.setValueS32("width", width);
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message.setValueS32("height", height);
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message.setValueS32("texture_width", texture_width);
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message.setValueS32("texture_height", texture_height);
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sendMessage(message);
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mFirstTime = true;
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mLastUpdateTime = 0;
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}
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else if (message_name == "load_uri")
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{
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}
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else if (message_name == "mouse_event")
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{
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std::string event = message_in.getValue("event");
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if (event == "down")
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{
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}
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else if (event == "up")
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{
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}
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else if (event == "double_click")
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{
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}
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}
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}
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else
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{
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};
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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void mediaPluginExample::update(F64 milliseconds)
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{
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if (mWidth < 1 || mWidth > 2048 || mHeight < 1 || mHeight > 2048)
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return;
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if (mPixels == 0)
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return;
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if (mFirstTime)
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{
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for (int n = 0; n < ENumObjects; ++n)
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{
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mXpos[n] = (mWidth / 2) + rand() % (mWidth / 16) - (mWidth / 32);
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mYpos[n] = (mHeight / 2) + rand() % (mHeight / 16) - (mHeight / 32);
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mColorR[n] = rand() % 0x60 + 0x60;
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mColorG[n] = rand() % 0x60 + 0x60;
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mColorB[n] = rand() % 0x60 + 0x60;
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mXInc[n] = 0;
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while (mXInc[n] == 0)
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mXInc[n] = rand() % 7 - 3;
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mYInc[n] = 0;
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while (mYInc[n] == 0)
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mYInc[n] = rand() % 9 - 4;
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mBlockSize[n] = rand() % 0x30 + 0x10;
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};
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delete[] mBackgroundPixels;
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mBackgroundPixels = new unsigned char[mWidth * mHeight * mDepth];
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mFirstTime = false;
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};
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if (time(NULL) > mLastUpdateTime + 3)
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{
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const int num_squares = rand() % 20 + 4;
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int sqr1_r = rand() % 0x80 + 0x20;
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int sqr1_g = rand() % 0x80 + 0x20;
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int sqr1_b = rand() % 0x80 + 0x20;
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int sqr2_r = rand() % 0x80 + 0x20;
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int sqr2_g = rand() % 0x80 + 0x20;
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int sqr2_b = rand() % 0x80 + 0x20;
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for (int y1 = 0; y1 < num_squares; ++y1)
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{
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for (int x1 = 0; x1 < num_squares; ++x1)
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{
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int px_start = mWidth * x1 / num_squares;
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int px_end = (mWidth * (x1 + 1)) / num_squares;
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int py_start = mHeight * y1 / num_squares;
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int py_end = (mHeight * (y1 + 1)) / num_squares;
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for (int y2 = py_start; y2 < py_end; ++y2)
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{
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for (int x2 = px_start; x2 < px_end; ++x2)
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{
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int rowspan = mWidth * mDepth;
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if ((y1 % 2) ^ (x1 % 2))
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{
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mBackgroundPixels[y2 * rowspan + x2 * mDepth + 0] = sqr1_r;
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mBackgroundPixels[y2 * rowspan + x2 * mDepth + 1] = sqr1_g;
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mBackgroundPixels[y2 * rowspan + x2 * mDepth + 2] = sqr1_b;
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}
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else
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{
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mBackgroundPixels[y2 * rowspan + x2 * mDepth + 0] = sqr2_r;
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mBackgroundPixels[y2 * rowspan + x2 * mDepth + 1] = sqr2_g;
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mBackgroundPixels[y2 * rowspan + x2 * mDepth + 2] = sqr2_b;
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};
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};
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};
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};
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};
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time(&mLastUpdateTime);
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};
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memcpy(mPixels, mBackgroundPixels, mWidth * mHeight * mDepth);
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for (int n = 0; n < ENumObjects; ++n)
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{
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if (rand() % 50 == 0)
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{
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mXInc[n] = 0;
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while (mXInc[n] == 0)
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mXInc[n] = rand() % 7 - 3;
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mYInc[n] = 0;
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while (mYInc[n] == 0)
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mYInc[n] = rand() % 9 - 4;
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};
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if (mXpos[n] + mXInc[n] < 0 || mXpos[n] + mXInc[n] >= mWidth - mBlockSize[n])
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mXInc[n] = -mXInc[n];
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if (mYpos[n] + mYInc[n] < 0 || mYpos[n] + mYInc[n] >= mHeight - mBlockSize[n])
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mYInc[n] = -mYInc[n];
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mXpos[n] += mXInc[n];
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mYpos[n] += mYInc[n];
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for (int y = 0; y < mBlockSize[n]; ++y)
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{
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for (int x = 0; x < mBlockSize[n]; ++x)
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{
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mPixels[(mXpos[n] + x) * mDepth + (mYpos[n] + y) * mDepth * mWidth + 0] = mColorR[n];
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mPixels[(mXpos[n] + x) * mDepth + (mYpos[n] + y) * mDepth * mWidth + 1] = mColorG[n];
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mPixels[(mXpos[n] + x) * mDepth + (mYpos[n] + y) * mDepth * mWidth + 2] = mColorB[n];
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};
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};
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};
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setDirty(0, 0, mWidth, mHeight);
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};
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////////////////////////////////////////////////////////////////////////////////
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//
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bool mediaPluginExample::init()
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{
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LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "name_text");
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message.setValue("name", "Example Plugin");
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sendMessage(message);
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return true;
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};
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////////////////////////////////////////////////////////////////////////////////
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//
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int init_media_plugin(LLPluginInstance::sendMessageFunction host_send_func,
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void* host_user_data,
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LLPluginInstance::sendMessageFunction *plugin_send_func,
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void **plugin_user_data)
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{
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mediaPluginExample* self = new mediaPluginExample(host_send_func, host_user_data);
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*plugin_send_func = mediaPluginExample::staticReceiveMessage;
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*plugin_user_data = (void*)self;
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return 0;
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}
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