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/**
* @file media_plugin_libvlc.cpp
* @brief LibVLC plugin for LLMedia API plugin system
*
* @cond
* $LicenseInfo:firstyear=2008&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
* @endcond
*/
#include "linden_common.h"
#include "llgl.h"
#include "llplugininstance.h"
#include "llpluginmessage.h"
#include "llpluginmessageclasses.h"
#include "media_plugin_base.h"
#include "vlc/vlc.h"
#include "vlc/libvlc_version.h"
////////////////////////////////////////////////////////////////////////////////
//
class MediaPluginLibVLC :
public MediaPluginBase
{
public:
MediaPluginLibVLC( LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data );
~MediaPluginLibVLC();
/*virtual*/ void receiveMessage( const char* message_string );
private:
bool init();
void initVLC();
void playMedia();
void resetVLC();
static void* lock(void* data, void** p_pixels);
static void unlock(void* data, void* id, void* const* raw_pixels);
static void display(void* data, void* id);
libvlc_instance_t* gLibVLC;
libvlc_media_t* gLibVLCMedia;
libvlc_media_player_t* gLibVLCMediaPlayer;
struct gVLCContext
{
unsigned char* texture_pixels;
libvlc_media_player_t* mp;
MediaPluginLibVLC* parent;
};
struct gVLCContext gVLCCallbackContext;
std::string mURL;
};
////////////////////////////////////////////////////////////////////////////////
//
MediaPluginLibVLC::MediaPluginLibVLC( LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data ) :
MediaPluginBase( host_send_func, host_user_data )
{
mTextureWidth = 0;
mTextureHeight = 0;
mWidth = 0;
mHeight = 0;
mDepth = 4;
mPixels = 0;
gLibVLC = 0;
gLibVLCMedia = 0;
gLibVLCMediaPlayer = 0;
mURL = std::string();
}
////////////////////////////////////////////////////////////////////////////////
//
MediaPluginLibVLC::~MediaPluginLibVLC()
{
}
/////////////////////////////////////////////////////////////////////////////////
//
void* MediaPluginLibVLC::lock(void* data, void** p_pixels)
{
struct gVLCContext* context = (gVLCContext*)data;
*p_pixels = context->texture_pixels;
return NULL;
}
/////////////////////////////////////////////////////////////////////////////////
//
void MediaPluginLibVLC::unlock(void* data, void* id, void* const* raw_pixels)
{
// nothing to do here for the moment.
// we can modify the raw_pixels here if we want to.
}
////////////////////////////////////////////////////////////////////////////////
//
void MediaPluginLibVLC::display(void* data, void* id)
{
struct gVLCContext* context = (gVLCContext*)data;
context->parent->setDirty(0, 0, context->parent->mWidth, context->parent->mHeight);
}
////////////////////////////////////////////////////////////////////////////////
//
void MediaPluginLibVLC::initVLC()
{
char const* vlc_argv[] =
{
"--no-xlib",
};
int vlc_argc = sizeof(vlc_argv) / sizeof(*vlc_argv);
gLibVLC = libvlc_new(vlc_argc, vlc_argv);
if (!gLibVLC)
{
// for the moment, if this fails, the plugin will fail and
// the media sub-system will tell the viewer something went wrong.
}
}
////////////////////////////////////////////////////////////////////////////////
//
void MediaPluginLibVLC::resetVLC()
{
libvlc_media_player_stop(gLibVLCMediaPlayer);
libvlc_media_player_release(gLibVLCMediaPlayer);
libvlc_release(gLibVLC);
}
////////////////////////////////////////////////////////////////////////////////
//
void MediaPluginLibVLC::playMedia()
{
if (mURL.length() == 0)
{
return;
}
if (gLibVLCMediaPlayer)
{
libvlc_media_player_stop(gLibVLCMediaPlayer);
libvlc_media_player_release(gLibVLCMediaPlayer);
}
gLibVLCMedia = libvlc_media_new_location(gLibVLC, mURL.c_str());
if (!gLibVLCMedia)
{
gLibVLCMediaPlayer = 0;
return;
}
gLibVLCMediaPlayer = libvlc_media_player_new_from_media(gLibVLCMedia);
if (!gLibVLCMediaPlayer)
{
return;
}
libvlc_media_release(gLibVLCMedia);
gVLCCallbackContext.parent = this;
gVLCCallbackContext.texture_pixels = mPixels;
gVLCCallbackContext.mp = gLibVLCMediaPlayer;
libvlc_video_set_callbacks(gLibVLCMediaPlayer, lock, unlock, display, &gVLCCallbackContext);
libvlc_video_set_format(gLibVLCMediaPlayer, "RV32", mWidth, mHeight, mWidth * mDepth);
libvlc_media_player_play(gLibVLCMediaPlayer);
}
////////////////////////////////////////////////////////////////////////////////
//
void MediaPluginLibVLC::receiveMessage( const char* message_string )
{
LLPluginMessage message_in;
if(message_in.parse(message_string) >= 0)
{
std::string message_class = message_in.getClass();
std::string message_name = message_in.getName();
if(message_class == LLPLUGIN_MESSAGE_CLASS_BASE)
{
if(message_name == "init")
{
initVLC();
LLPluginMessage message("base", "init_response");
LLSD versions = LLSD::emptyMap();
versions[LLPLUGIN_MESSAGE_CLASS_BASE] = LLPLUGIN_MESSAGE_CLASS_BASE_VERSION;
versions[LLPLUGIN_MESSAGE_CLASS_MEDIA] = LLPLUGIN_MESSAGE_CLASS_MEDIA_VERSION;
versions[LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER] = LLPLUGIN_MESSAGE_CLASS_MEDIA_BROWSER_VERSION;
message.setValueLLSD("versions", versions);
std::ostringstream s;
s << "LibVLC plugin ";
s << LIBVLC_VERSION_MAJOR;
s << ".";
s << LIBVLC_VERSION_MINOR;
s << ".";
s << LIBVLC_VERSION_REVISION;
message.setValue("plugin_version", s.str());
sendMessage(message);
}
else if(message_name == "idle")
{
}
else if(message_name == "cleanup")
{
resetVLC();
}
else if(message_name == "shm_added")
{
SharedSegmentInfo info;
info.mAddress = message_in.getValuePointer("address");
info.mSize = (size_t)message_in.getValueS32("size");
std::string name = message_in.getValue("name");
mSharedSegments.insert(SharedSegmentMap::value_type(name, info));
}
else if(message_name == "shm_remove")
{
std::string name = message_in.getValue("name");
SharedSegmentMap::iterator iter = mSharedSegments.find(name);
if(iter != mSharedSegments.end())
{
if(mPixels == iter->second.mAddress)
{
libvlc_media_player_stop(gLibVLCMediaPlayer);
libvlc_media_player_release(gLibVLCMediaPlayer);
gLibVLCMediaPlayer = 0;
mPixels = NULL;
mTextureSegmentName.clear();
}
mSharedSegments.erase(iter);
}
else
{
//std::cerr << "MediaPluginWebKit::receiveMessage: unknown shared memory region!" << std::endl;
}
// Send the response so it can be cleaned up.
LLPluginMessage message("base", "shm_remove_response");
message.setValue("name", name);
sendMessage(message);
}
else
{
//std::cerr << "MediaPluginWebKit::receiveMessage: unknown base message: " << message_name << std::endl;
}
}
else if(message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA)
{
if(message_name == "init")
{
LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "texture_params");
message.setValueS32("default_width", 1024);
message.setValueS32("default_height", 1024);
message.setValueS32("depth", mDepth);
message.setValueU32("internalformat", GL_RGB);
message.setValueU32("format", GL_BGRA_EXT);
message.setValueU32("type", GL_UNSIGNED_BYTE);
message.setValueBoolean("coords_opengl", false);
sendMessage(message);
}
else if(message_name == "size_change")
{
std::string name = message_in.getValue("name");
S32 width = message_in.getValueS32("width");
S32 height = message_in.getValueS32("height");
S32 texture_width = message_in.getValueS32("texture_width");
S32 texture_height = message_in.getValueS32("texture_height");
if(!name.empty())
{
// Find the shared memory region with this name
SharedSegmentMap::iterator iter = mSharedSegments.find(name);
if(iter != mSharedSegments.end())
{
mPixels = (unsigned char*)iter->second.mAddress;
mWidth = width;
mHeight = height;
mTextureWidth = texture_width;
mTextureHeight = texture_height;
playMedia();
};
};
LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "size_change_response");
message.setValue("name", name);
message.setValueS32("width", width);
message.setValueS32("height", height);
message.setValueS32("texture_width", texture_width);
message.setValueS32("texture_height", texture_height);
sendMessage(message);
}
else if(message_name == "load_uri")
{
mURL = message_in.getValue("uri");
playMedia();
}
}
else
if (message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA_TIME)
{
if (message_name == "stop")
{
if (gLibVLCMediaPlayer)
{
libvlc_media_player_stop(gLibVLCMediaPlayer);
}
}
else if (message_name == "start")
{
if (gLibVLCMediaPlayer)
{
libvlc_media_player_play(gLibVLCMediaPlayer);
}
}
else if (message_name == "pause")
{
if (gLibVLCMediaPlayer)
{
libvlc_media_player_pause(gLibVLCMediaPlayer);
}
}
else if (message_name == "seek")
{
}
else if (message_name == "set_loop")
{
}
else if (message_name == "set_volume")
{
if (gLibVLCMediaPlayer)
{
F64 volume = message_in.getValueReal("volume");
libvlc_audio_set_volume(gLibVLCMediaPlayer, (int)(volume * 100));
}
}
}
}
}
////////////////////////////////////////////////////////////////////////////////
//
bool MediaPluginLibVLC::init()
{
LLPluginMessage message( LLPLUGIN_MESSAGE_CLASS_MEDIA, "name_text" );
message.setValue( "name", "LibVLC Plugin" );
sendMessage( message );
return true;
};
////////////////////////////////////////////////////////////////////////////////
//
int init_media_plugin( LLPluginInstance::sendMessageFunction host_send_func,
void* host_user_data,
LLPluginInstance::sendMessageFunction *plugin_send_func,
void **plugin_user_data )
{
MediaPluginLibVLC* self = new MediaPluginLibVLC( host_send_func, host_user_data );
*plugin_send_func = MediaPluginLibVLC::staticReceiveMessage;
*plugin_user_data = ( void* )self;
return 0;
}
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