Merge branch 'develop' into rlva/base

1 files changed, 0 insertions, 1266 deletions

diff --git a/indra/media_plugins/gstreamer010/media_plugin_gstreamer010.cpp b/indra/media_plugins/gstreamer010/media_plugin_gstreamer010.cpp
deleted file mode 100644
index 97d1d7d7b5..0000000000
--- a/indra/media_plugins/gstreamer010/media_plugin_gstreamer010.cpp
+++ /dev/null
@@ -1,1266 +0,0 @@
-/**
- * @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, &micro, &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