/** * @file media_plugin_gstreamer010.cpp * @brief GStreamer-0.10 plugin for LLMedia API plugin system * * @cond * $LicenseInfo:firstyear=2007&license=viewerlgpl$ * 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" #if LL_GSTREAMER010_ENABLED extern "C" { #include <gst/gst.h> } #include "llmediaimplgstreamer.h" #include "llmediaimplgstreamertriviallogging.h" #include "llmediaimplgstreamervidplug.h" #include "llmediaimplgstreamer_syms.h" ////////////////////////////////////////////////////////////////////////////// // class MediaPluginGStreamer010 : public MediaPluginBase { public: MediaPluginGStreamer010(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data); ~MediaPluginGStreamer010(); /* virtual */ void receiveMessage(const char *message_string); static bool startup(); static bool closedown(); gboolean processGSTEvents(GstBus *bus, GstMessage *message); private: std::string getVersion(); bool navigateTo( const std::string urlIn ); bool seek( double time_sec ); bool setVolume( float volume ); // misc bool pause(); bool stop(); bool play(double rate); bool getTimePos(double &sec_out); static const double MIN_LOOP_SEC = 1.0F; bool mIsLooping; enum ECommand { COMMAND_NONE, COMMAND_STOP, COMMAND_PLAY, COMMAND_FAST_FORWARD, COMMAND_FAST_REWIND, COMMAND_PAUSE, COMMAND_SEEK, }; ECommand mCommand; private: bool unload(); bool load(); bool update(int milliseconds); void mouseDown( int x, int y ); void mouseUp( int x, int y ); void mouseMove( int x, int y ); void sizeChanged(); static bool mDoneInit; guint mBusWatchID; float mVolume; int mDepth; // media NATURAL size int mNaturalWidth; int mNaturalHeight; // media current size int mCurrentWidth; int mCurrentHeight; int mCurrentRowbytes; // previous media size so we can detect changes int mPreviousWidth; int mPreviousHeight; // desired render size from host int mWidth; int mHeight; // padded texture size we need to write into int mTextureWidth; int mTextureHeight; int mTextureFormatPrimary; int mTextureFormatType; bool mSeekWanted; double mSeekDestination; // Very GStreamer-specific GMainLoop *mPump; // event pump for this media GstElement *mPlaybin; GstElement *mVisualizer; GstSLVideo *mVideoSink; }; //static bool MediaPluginGStreamer010::mDoneInit = false; MediaPluginGStreamer010::MediaPluginGStreamer010( LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data ) : MediaPluginBase(host_send_func, host_user_data), mBusWatchID ( 0 ), mCurrentRowbytes ( 4 ), mTextureFormatPrimary ( GL_RGBA ), mTextureFormatType ( GL_UNSIGNED_INT_8_8_8_8_REV ), mSeekWanted(false), mSeekDestination(0.0), mPump ( NULL ), mPlaybin ( NULL ), mVisualizer ( NULL ), mVideoSink ( NULL ), mCommand ( COMMAND_NONE ) { std::ostringstream str; INFOMSG("MediaPluginGStreamer010 constructor - my PID=%u", U32(getpid())); } /////////////////////////////////////////////////////////////////////////////// // //#define LL_GST_REPORT_STATE_CHANGES #ifdef LL_GST_REPORT_STATE_CHANGES static char* get_gst_state_name(GstState state) { switch (state) { case GST_STATE_VOID_PENDING: return "VOID_PENDING"; case GST_STATE_NULL: return "NULL"; case GST_STATE_READY: return "READY"; case GST_STATE_PAUSED: return "PAUSED"; case GST_STATE_PLAYING: return "PLAYING"; } return "(unknown)"; } #endif // LL_GST_REPORT_STATE_CHANGES gboolean MediaPluginGStreamer010::processGSTEvents(GstBus *bus, GstMessage *message) { if (!message) return TRUE; // shield against GStreamer bug if (GST_MESSAGE_TYPE(message) != GST_MESSAGE_STATE_CHANGED && GST_MESSAGE_TYPE(message) != GST_MESSAGE_BUFFERING) { DEBUGMSG("Got GST message type: %s", LLGST_MESSAGE_TYPE_NAME (message)); } else { // TODO: grok 'duration' message type DEBUGMSG("Got GST message type: %s", LLGST_MESSAGE_TYPE_NAME (message)); } switch (GST_MESSAGE_TYPE (message)) { case GST_MESSAGE_BUFFERING: { // NEEDS GST 0.10.11+ if (llgst_message_parse_buffering) { gint percent = 0; llgst_message_parse_buffering(message, &percent); DEBUGMSG("GST buffering: %d%%", percent); } break; } case GST_MESSAGE_STATE_CHANGED: { GstState old_state; GstState new_state; GstState pending_state; llgst_message_parse_state_changed(message, &old_state, &new_state, &pending_state); #ifdef LL_GST_REPORT_STATE_CHANGES // not generally very useful, and rather spammy. DEBUGMSG("state change (old,<new>,pending): %s,<%s>,%s", get_gst_state_name(old_state), get_gst_state_name(new_state), get_gst_state_name(pending_state)); #endif // LL_GST_REPORT_STATE_CHANGES switch (new_state) { case GST_STATE_VOID_PENDING: break; case GST_STATE_NULL: break; case GST_STATE_READY: setStatus(STATUS_LOADED); break; case GST_STATE_PAUSED: setStatus(STATUS_PAUSED); break; case GST_STATE_PLAYING: setStatus(STATUS_PLAYING); break; } break; } case GST_MESSAGE_ERROR: { GError *err = NULL; gchar *debug = NULL; llgst_message_parse_error (message, &err, &debug); WARNMSG("GST error: %s", err?err->message:"(unknown)"); if (err) g_error_free (err); g_free (debug); mCommand = COMMAND_STOP; setStatus(STATUS_ERROR); break; } case GST_MESSAGE_INFO: { if (llgst_message_parse_info) { GError *err = NULL; gchar *debug = NULL; llgst_message_parse_info (message, &err, &debug); INFOMSG("GST info: %s", err?err->message:"(unknown)"); if (err) g_error_free (err); g_free (debug); } break; } case GST_MESSAGE_WARNING: { GError *err = NULL; gchar *debug = NULL; llgst_message_parse_warning (message, &err, &debug); WARNMSG("GST warning: %s", err?err->message:"(unknown)"); if (err) g_error_free (err); g_free (debug); break; } case GST_MESSAGE_EOS: /* end-of-stream */ DEBUGMSG("GST end-of-stream."); if (mIsLooping) { DEBUGMSG("looping media..."); double eos_pos_sec = 0.0F; bool got_eos_position = getTimePos(eos_pos_sec); if (got_eos_position && eos_pos_sec < MIN_LOOP_SEC) { // if we know that the movie is really short, don't // loop it else it can easily become a time-hog // because of GStreamer spin-up overhead DEBUGMSG("really short movie (%0.3fsec) - not gonna loop this, pausing instead.", eos_pos_sec); // inject a COMMAND_PAUSE mCommand = COMMAND_PAUSE; } else { #undef LLGST_LOOP_BY_SEEKING // loop with a stop-start instead of a seek, because it actually seems rather // faster than seeking on remote streams. #ifdef LLGST_LOOP_BY_SEEKING // first, try looping by an explicit rewind bool seeksuccess = seek(0.0); if (seeksuccess) { play(1.0); } else #endif // LLGST_LOOP_BY_SEEKING { // use clumsy stop-start to loop DEBUGMSG("didn't loop by rewinding - stopping and starting instead..."); stop(); play(1.0); } } } else // not a looping media { // inject a COMMAND_STOP mCommand = COMMAND_STOP; } break; default: /* unhandled message */ break; } /* we want to be notified again the next time there is a message * on the bus, so return true (false means we want to stop watching * for messages on the bus and our callback should not be called again) */ return TRUE; } extern "C" { gboolean llmediaimplgstreamer_bus_callback (GstBus *bus, GstMessage *message, gpointer data) { MediaPluginGStreamer010 *impl = (MediaPluginGStreamer010*)data; return impl->processGSTEvents(bus, message); } } // extern "C" bool MediaPluginGStreamer010::navigateTo ( const std::string urlIn ) { if (!mDoneInit) return false; // error setStatus(STATUS_LOADING); DEBUGMSG("Setting media URI: %s", urlIn.c_str()); mSeekWanted = false; if (NULL == mPump || NULL == mPlaybin) { setStatus(STATUS_ERROR); return false; // error } // set URI g_object_set (G_OBJECT (mPlaybin), "uri", urlIn.c_str(), NULL); //g_object_set (G_OBJECT (mPlaybin), "uri", "file:///tmp/movie", NULL); // navigateTo implicitly plays, too. play(1.0); return true; } bool MediaPluginGStreamer010::update(int milliseconds) { if (!mDoneInit) return false; // error DEBUGMSG("updating media..."); // sanity check if (NULL == mPump || NULL == mPlaybin) { DEBUGMSG("dead media..."); return false; } // see if there's an outstanding seek wanted if (mSeekWanted && // bleh, GST has to be happy that the movie is really truly playing // or it may quietly ignore the seek (with rtsp:// at least). (GST_STATE(mPlaybin) == GST_STATE_PLAYING)) { seek(mSeekDestination); mSeekWanted = false; } // *TODO: time-limit - but there isn't a lot we can do here, most // time is spent in gstreamer's own opaque worker-threads. maybe // we can do something sneaky like only unlock the video object // for 'milliseconds' and otherwise hold the lock. while (g_main_context_pending(g_main_loop_get_context(mPump))) { g_main_context_iteration(g_main_loop_get_context(mPump), FALSE); } // check for availability of a new frame if (mVideoSink) { GST_OBJECT_LOCK(mVideoSink); if (mVideoSink->retained_frame_ready) { DEBUGMSG("NEW FRAME READY"); if (mVideoSink->retained_frame_width != mCurrentWidth || mVideoSink->retained_frame_height != mCurrentHeight) // *TODO: also check for change in format { // just resize container, don't consume frame int neww = mVideoSink->retained_frame_width; int newh = mVideoSink->retained_frame_height; int newd = 4; mTextureFormatPrimary = GL_RGBA; mTextureFormatType = GL_UNSIGNED_INT_8_8_8_8_REV; /* int newd = SLVPixelFormatBytes[mVideoSink->retained_frame_format]; if (SLV_PF_BGRX == mVideoSink->retained_frame_format) { mTextureFormatPrimary = GL_BGRA; mTextureFormatType = GL_UNSIGNED_INT_8_8_8_8_REV; } else { mTextureFormatPrimary = GL_RGBA; mTextureFormatType = GL_UNSIGNED_INT_8_8_8_8_REV; } */ GST_OBJECT_UNLOCK(mVideoSink); mCurrentRowbytes = neww * newd; DEBUGMSG("video container resized to %dx%d", neww, newh); mDepth = newd; mCurrentWidth = neww; mCurrentHeight = newh; sizeChanged(); return true; } if (mPixels && mCurrentHeight <= mHeight && mCurrentWidth <= mWidth && !mTextureSegmentName.empty()) { // we're gonna totally consume this frame - reset 'ready' flag mVideoSink->retained_frame_ready = FALSE; int destination_rowbytes = mWidth * mDepth; for (int row=0; row<mCurrentHeight; ++row) { memcpy(&mPixels [destination_rowbytes * row], &mVideoSink->retained_frame_data [mCurrentRowbytes * row], mCurrentRowbytes); } GST_OBJECT_UNLOCK(mVideoSink); DEBUGMSG("NEW FRAME REALLY TRULY CONSUMED, TELLING HOST"); setDirty(0,0,mCurrentWidth,mCurrentHeight); } else { // new frame ready, but we're not ready to // consume it. GST_OBJECT_UNLOCK(mVideoSink); DEBUGMSG("NEW FRAME not consumed, still waiting for a shm segment and/or shm resize"); } return true; } else { // nothing to do yet. GST_OBJECT_UNLOCK(mVideoSink); return true; } } return true; } void MediaPluginGStreamer010::mouseDown( int x, int y ) { // do nothing } void MediaPluginGStreamer010::mouseUp( int x, int y ) { // do nothing } void MediaPluginGStreamer010::mouseMove( int x, int y ) { // do nothing } bool MediaPluginGStreamer010::pause() { DEBUGMSG("pausing media..."); // todo: error-check this? if (mDoneInit && mPlaybin) { llgst_element_set_state(mPlaybin, GST_STATE_PAUSED); return true; } return false; } bool MediaPluginGStreamer010::stop() { DEBUGMSG("stopping media..."); // todo: error-check this? if (mDoneInit && mPlaybin) { llgst_element_set_state(mPlaybin, GST_STATE_READY); return true; } return false; } bool MediaPluginGStreamer010::play(double rate) { // NOTE: we don't actually support non-natural rate. DEBUGMSG("playing media... rate=%f", rate); // todo: error-check this? if (mDoneInit && mPlaybin) { llgst_element_set_state(mPlaybin, GST_STATE_PLAYING); return true; } return false; } bool MediaPluginGStreamer010::setVolume( float volume ) { // we try to only update volume as conservatively as // possible, as many gst-plugins-base versions up to at least // November 2008 have critical race-conditions in setting volume - sigh if (mVolume == volume) return true; // nothing to do, everything's fine mVolume = volume; if (mDoneInit && mPlaybin) { g_object_set(mPlaybin, "volume", mVolume, NULL); return true; } return false; } bool MediaPluginGStreamer010::seek(double time_sec) { bool success = false; if (mDoneInit && mPlaybin) { success = llgst_element_seek(mPlaybin, 1.0F, GST_FORMAT_TIME, GstSeekFlags(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT), GST_SEEK_TYPE_SET, gint64(time_sec*GST_SECOND), GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE); } DEBUGMSG("MEDIA SEEK REQUEST to %fsec result was %d", float(time_sec), int(success)); return success; } bool MediaPluginGStreamer010::getTimePos(double &sec_out) { bool got_position = false; if (mDoneInit && mPlaybin) { gint64 pos; GstFormat timefmt = GST_FORMAT_TIME; got_position = llgst_element_query_position && llgst_element_query_position(mPlaybin, &timefmt, &pos); got_position = got_position && (timefmt == GST_FORMAT_TIME); // GStreamer may have other ideas, but we consider the current position // undefined if not PLAYING or PAUSED got_position = got_position && (GST_STATE(mPlaybin) == GST_STATE_PLAYING || GST_STATE(mPlaybin) == GST_STATE_PAUSED); if (got_position && !GST_CLOCK_TIME_IS_VALID(pos)) { if (GST_STATE(mPlaybin) == GST_STATE_PLAYING) { // if we're playing then we treat an invalid clock time // as 0, for complicated reasons (insert reason here) pos = 0; } else { got_position = false; } } // If all the preconditions succeeded... we can trust the result. if (got_position) { sec_out = double(pos) / double(GST_SECOND); // gst to sec } } return got_position; } bool MediaPluginGStreamer010::load() { if (!mDoneInit) return false; // error setStatus(STATUS_LOADING); DEBUGMSG("setting up media..."); mIsLooping = false; mVolume = 0.1234567; // minor hack to force an initial volume update // Create a pumpable main-loop for this media mPump = g_main_loop_new (NULL, FALSE); if (!mPump) { setStatus(STATUS_ERROR); return false; // error } // instantiate a playbin element to do the hard work mPlaybin = llgst_element_factory_make ("playbin", "play"); if (!mPlaybin) { setStatus(STATUS_ERROR); return false; // error } // get playbin's bus GstBus *bus = llgst_pipeline_get_bus (GST_PIPELINE (mPlaybin)); if (!bus) { setStatus(STATUS_ERROR); return false; // error } mBusWatchID = llgst_bus_add_watch (bus, llmediaimplgstreamer_bus_callback, this); llgst_object_unref (bus); #if 0 // not quite stable/correct yet // get a visualizer element (bonus feature!) char* vis_name = getenv("LL_GST_VIS_NAME"); if (!vis_name || (vis_name && std::string(vis_name)!="none")) { if (vis_name) { mVisualizer = llgst_element_factory_make (vis_name, "vis"); } if (!mVisualizer) { mVisualizer = llgst_element_factory_make ("libvisual_jess", "vis"); if (!mVisualizer) { mVisualizer = llgst_element_factory_make ("goom", "vis"); if (!mVisualizer) { mVisualizer = llgst_element_factory_make ("libvisual_lv_scope", "vis"); if (!mVisualizer) { // That's okay, we don't NEED this. } } } } } #endif if (NULL == getenv("LL_GSTREAMER_EXTERNAL")) { // instantiate a custom video sink mVideoSink = GST_SLVIDEO(llgst_element_factory_make ("private-slvideo", "slvideo")); if (!mVideoSink) { WARNMSG("Could not instantiate private-slvideo element."); // todo: cleanup. setStatus(STATUS_ERROR); return false; // error } // connect the pieces g_object_set(mPlaybin, "video-sink", mVideoSink, NULL); } if (mVisualizer) { g_object_set(mPlaybin, "vis-plugin", mVisualizer, NULL); } return true; } bool MediaPluginGStreamer010::unload () { if (!mDoneInit) return false; // error DEBUGMSG("unloading media..."); // stop getting callbacks for this bus g_source_remove(mBusWatchID); mBusWatchID = 0; if (mPlaybin) { llgst_element_set_state (mPlaybin, GST_STATE_NULL); llgst_object_unref (GST_OBJECT (mPlaybin)); mPlaybin = NULL; } if (mVisualizer) { llgst_object_unref (GST_OBJECT (mVisualizer)); mVisualizer = NULL; } if (mPump) { g_main_loop_quit(mPump); mPump = NULL; } mVideoSink = NULL; setStatus(STATUS_NONE); return true; } //static bool MediaPluginGStreamer010::startup() { // first - check if GStreamer is explicitly disabled if (NULL != getenv("LL_DISABLE_GSTREAMER")) return false; // only do global GStreamer initialization once. if (!mDoneInit) { g_thread_init(NULL); // Init the glib type system - we need it. g_type_init(); // Get symbols! #if LL_DARWIN if (! grab_gst_syms("libgstreamer-0.10.dylib", "libgstvideo-0.10.dylib") ) #elseif LL_WINDOWS if (! grab_gst_syms("libgstreamer-0.10.dll", "libgstvideo-0.10.dll") ) #else // linux or other ELFy unixoid if (! grab_gst_syms("libgstreamer-0.10.so.0", "libgstvideo-0.10.so.0") ) #endif { WARNMSG("Couldn't find suitable GStreamer 0.10 support on this system - video playback disabled."); return false; } if (llgst_segtrap_set_enabled) { llgst_segtrap_set_enabled(FALSE); } else { WARNMSG("gst_segtrap_set_enabled() is not available; plugin crashes won't be caught."); } #if LL_LINUX // Gstreamer tries a fork during init, waitpid-ing on it, // which conflicts with any installed SIGCHLD handler... struct sigaction tmpact, oldact; if (llgst_registry_fork_set_enabled) { // if we can disable SIGCHLD-using forking behaviour, // do it. llgst_registry_fork_set_enabled(false); } else { // else temporarily install default SIGCHLD handler // while GStreamer initialises tmpact.sa_handler = SIG_DFL; sigemptyset( &tmpact.sa_mask ); tmpact.sa_flags = SA_SIGINFO; sigaction(SIGCHLD, &tmpact, &oldact); } #endif // LL_LINUX // Protect against GStreamer resetting the locale, yuck. static std::string saved_locale; saved_locale = setlocale(LC_ALL, NULL); // finally, try to initialize GStreamer! GError *err = NULL; gboolean init_gst_success = llgst_init_check(NULL, NULL, &err); // restore old locale setlocale(LC_ALL, saved_locale.c_str() ); #if LL_LINUX // restore old SIGCHLD handler if (!llgst_registry_fork_set_enabled) sigaction(SIGCHLD, &oldact, NULL); #endif // LL_LINUX if (!init_gst_success) // fail { if (err) { WARNMSG("GST init failed: %s", err->message); g_error_free(err); } else { WARNMSG("GST init failed for unspecified reason."); } return false; } // Init our custom plugins - only really need do this once. gst_slvideo_init_class(); mDoneInit = true; } return true; } void MediaPluginGStreamer010::sizeChanged() { // the shared writing space has possibly changed size/location/whatever // Check to see whether the movie's NATURAL size has been set yet if (1 == mNaturalWidth && 1 == mNaturalHeight) { mNaturalWidth = mCurrentWidth; mNaturalHeight = mCurrentHeight; DEBUGMSG("Media NATURAL size better detected as %dx%d", mNaturalWidth, mNaturalHeight); } // if the size has changed then the shm has changed and the app needs telling if (mCurrentWidth != mPreviousWidth || mCurrentHeight != mPreviousHeight) { mPreviousWidth = mCurrentWidth; mPreviousHeight = mCurrentHeight; LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "size_change_request"); message.setValue("name", mTextureSegmentName); message.setValueS32("width", mNaturalWidth); message.setValueS32("height", mNaturalHeight); DEBUGMSG("<--- Sending size change request to application with name: '%s' - natural size is %d x %d", mTextureSegmentName.c_str(), mNaturalWidth, mNaturalHeight); sendMessage(message); } } //static bool MediaPluginGStreamer010::closedown() { if (!mDoneInit) return false; // error ungrab_gst_syms(); mDoneInit = false; return true; } MediaPluginGStreamer010::~MediaPluginGStreamer010() { DEBUGMSG("MediaPluginGStreamer010 destructor"); closedown(); DEBUGMSG("GStreamer010 closing down"); } std::string MediaPluginGStreamer010::getVersion() { std::string plugin_version = "GStreamer010 media plugin, GStreamer version "; if (mDoneInit && llgst_version) { guint major, minor, micro, nano; llgst_version(&major, &minor, µ, &nano); plugin_version += llformat("%u.%u.%u.%u (runtime), %u.%u.%u.%u (headers)", (unsigned int)major, (unsigned int)minor, (unsigned int)micro, (unsigned int)nano, (unsigned int)GST_VERSION_MAJOR, (unsigned int)GST_VERSION_MINOR, (unsigned int)GST_VERSION_MICRO, (unsigned int)GST_VERSION_NANO); } else { plugin_version += "(unknown)"; } return plugin_version; } void MediaPluginGStreamer010::receiveMessage(const char *message_string) { //std::cerr << "MediaPluginGStreamer010::receiveMessage: received message: \"" << message_string << "\"" << std::endl; 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") { 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_TIME] = LLPLUGIN_MESSAGE_CLASS_MEDIA_TIME_VERSION; message.setValueLLSD("versions", versions); if ( load() ) { DEBUGMSG("GStreamer010 media instance set up"); } else { WARNMSG("GStreamer010 media instance failed to set up"); } message.setValue("plugin_version", getVersion()); sendMessage(message); } else if(message_name == "idle") { // no response is necessary here. double time = message_in.getValueReal("time"); // Convert time to milliseconds for update() update((int)(time * 1000.0f)); } else if(message_name == "cleanup") { unload(); closedown(); } 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"); std::ostringstream str; INFOMSG("MediaPluginGStreamer010::receiveMessage: shared memory added, name: %s, size: %d, address: %p", name.c_str(), int(info.mSize), info.mAddress); mSharedSegments.insert(SharedSegmentMap::value_type(name, info)); } else if(message_name == "shm_remove") { std::string name = message_in.getValue("name"); DEBUGMSG("MediaPluginGStreamer010::receiveMessage: shared memory remove, name = %s", name.c_str()); SharedSegmentMap::iterator iter = mSharedSegments.find(name); if(iter != mSharedSegments.end()) { if(mPixels == iter->second.mAddress) { // This is the currently active pixel buffer. Make sure we stop drawing to it. mPixels = NULL; mTextureSegmentName.clear(); // Make sure the movie decoder is no longer pointed at the shared segment. sizeChanged(); } mSharedSegments.erase(iter); } else { WARNMSG("MediaPluginGStreamer010::receiveMessage: unknown shared memory region!"); } // Send the response so it can be cleaned up. LLPluginMessage message("base", "shm_remove_response"); message.setValue("name", name); sendMessage(message); } else { std::ostringstream str; INFOMSG("MediaPluginGStreamer010::receiveMessage: unknown base message: %s", message_name.c_str()); } } else if(message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA) { if(message_name == "init") { // Plugin gets to decide the texture parameters to use. LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_MEDIA, "texture_params"); // lame to have to decide this now, it depends on the movie. Oh well. mDepth = 4; mCurrentWidth = 1; mCurrentHeight = 1; mPreviousWidth = 1; mPreviousHeight = 1; mNaturalWidth = 1; mNaturalHeight = 1; mWidth = 1; mHeight = 1; mTextureWidth = 1; mTextureHeight = 1; message.setValueU32("format", GL_RGBA); message.setValueU32("type", GL_UNSIGNED_INT_8_8_8_8_REV); message.setValueS32("depth", mDepth); message.setValueS32("default_width", mWidth); message.setValueS32("default_height", mHeight); message.setValueU32("internalformat", GL_RGBA8); message.setValueBoolean("coords_opengl", true); // true == use OpenGL-style coordinates, false == (0,0) is upper left. message.setValueBoolean("allow_downsample", true); // we respond with grace and performance if asked to downscale 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"); std::ostringstream str; INFOMSG("---->Got size change instruction from application with shm name: %s - size is %d x %d", name.c_str(), width, height); 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); if(!name.empty()) { // Find the shared memory region with this name SharedSegmentMap::iterator iter = mSharedSegments.find(name); if(iter != mSharedSegments.end()) { INFOMSG("*** Got size change with matching shm, new size is %d x %d", width, height); INFOMSG("*** Got size change with matching shm, texture size size is %d x %d", texture_width, texture_height); mPixels = (unsigned char*)iter->second.mAddress; mTextureSegmentName = name; mWidth = width; mHeight = height; if (texture_width > 1 || texture_height > 1) // not a dummy size from the app, a real explicit forced size { INFOMSG("**** = REAL RESIZE REQUEST FROM APP"); GST_OBJECT_LOCK(mVideoSink); mVideoSink->resize_forced_always = true; mVideoSink->resize_try_width = texture_width; mVideoSink->resize_try_height = texture_height; GST_OBJECT_UNLOCK(mVideoSink); } mTextureWidth = texture_width; mTextureHeight = texture_height; } } } else if(message_name == "load_uri") { std::string uri = message_in.getValue("uri"); navigateTo( uri ); sendStatus(); } else if(message_name == "mouse_event") { std::string event = message_in.getValue("event"); S32 x = message_in.getValueS32("x"); S32 y = message_in.getValueS32("y"); if(event == "down") { mouseDown(x, y); } else if(event == "up") { mouseUp(x, y); } else if(event == "move") { mouseMove(x, y); }; }; } else if(message_class == LLPLUGIN_MESSAGE_CLASS_MEDIA_TIME) { if(message_name == "stop") { stop(); } else if(message_name == "start") { double rate = 0.0; if(message_in.hasValue("rate")) { rate = message_in.getValueReal("rate"); } // NOTE: we don't actually support rate. play(rate); } else if(message_name == "pause") { pause(); } else if(message_name == "seek") { double time = message_in.getValueReal("time"); // defer the actual seek in case we haven't // really truly started yet in which case there // is nothing to seek upon mSeekWanted = true; mSeekDestination = time; } else if(message_name == "set_loop") { bool loop = message_in.getValueBoolean("loop"); mIsLooping = loop; } else if(message_name == "set_volume") { double volume = message_in.getValueReal("volume"); setVolume(volume); } } else { INFOMSG("MediaPluginGStreamer010::receiveMessage: unknown message class: %s", message_class.c_str()); } } } int init_media_plugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data) { if (MediaPluginGStreamer010::startup()) { MediaPluginGStreamer010 *self = new MediaPluginGStreamer010(host_send_func, host_user_data); *plugin_send_func = MediaPluginGStreamer010::staticReceiveMessage; *plugin_user_data = (void*)self; return 0; // okay } else { return -1; // failed to init } } #else // LL_GSTREAMER010_ENABLED // Stubbed-out class with constructor/destructor (necessary or windows linker // will just think its dead code and optimize it all out) class MediaPluginGStreamer010 : public MediaPluginBase { public: MediaPluginGStreamer010(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data); ~MediaPluginGStreamer010(); /* virtual */ void receiveMessage(const char *message_string); }; MediaPluginGStreamer010::MediaPluginGStreamer010( LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data ) : MediaPluginBase(host_send_func, host_user_data) { // no-op } MediaPluginGStreamer010::~MediaPluginGStreamer010() { // no-op } void MediaPluginGStreamer010::receiveMessage(const char *message_string) { // no-op } // We're building without GStreamer enabled. Just refuse to initialize. int init_media_plugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data) { return -1; } #endif // LL_GSTREAMER010_ENABLED