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/**
* @file llmediaimplgstreamer.h
* @author Tofu Linden
* @brief implementation that supports media playback via GStreamer.
*
* $LicenseInfo:firstyear=2007&license=viewergpl$
*
* Copyright (c) 2007-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
// header guard
#ifndef llmediaimplgstreamer_h
#define llmediaimplgstreamer_h
#include "llmediaimplcommon.h"
#include "llmediaimplfactory.h"
///#if LL_GSTREAMER_ENABLED
extern "C" {
#include <gst/gst.h>
}
#include <stdio.h>
#include "apr_pools.h"
#include "apr_dso.h"
#include "llmediaimplgstreamervidplug.h"
#include "llgstplaythread.h"
class LLMediaManagerData;
class LLMediaImplMaker;
///////////////////////////////////////////////////////////////////////////
class LLMediaImplGStreamer:
public LLMediaImplCommon
{
friend class LLGstPlayThread;
public:
LLMediaImplGStreamer ();
virtual ~LLMediaImplGStreamer ();
////////////////////////////////////////////////////////
// implementation of the media public interface
static bool startup( LLMediaManagerData* init_data );
static bool closedown();
// Sets GST_PLUGIN_PATH env var for GStreamer.
static void set_gst_plugin_path();
/* virtual */ bool setDebugLevel( LLMediaBase::EDebugLevel level );
// Function given to GStreamer for handling debug messages
static void gstreamer_log(GstDebugCategory *category,
GstDebugLevel level,
const gchar *file,
const gchar *function,
gint line,
GObject *object,
GstDebugMessage *message,
gpointer data)
#if __GNUC__
// recommended by the gstreamer docs
G_GNUC_NO_INSTRUMENT
#endif
;
/* virtual */ std::string getVersion();
/* virtual */ bool navigateTo( const std::string url );
/* virtual */ bool updateMedia();
/* virtual */ unsigned char* getMediaData();
/* virtual */ int getTextureFormatPrimary() const;
/* virtual */ int getTextureFormatType() const;
/* virtual */ int getTextureFormatInternal() const;
/* virtual */ bool seek( double time );
/* virtual */ bool setVolume( float volume );
LLMediaEmitter< LLMediaObserver > getEventEmitter() const {return mEventEmitter;};
protected:
void startPlay();
private:
// misc
bool unload();
bool pause();
bool stop();
bool play();
static gboolean bus_callback (GstBus *bus,
GstMessage *message,
gpointer data);
unsigned char* mediaData;
int mMediaRowbytes;
int mTextureFormatPrimary;
int mTextureFormatType;
// GStreamer-specific
GMainLoop *mPump; // event pump for this media
GstElement *mPlaybin;
GstSLVideo *mVideoSink;
std::string mLastTitle;
GstState mState;
GstState getState() const { return mState; }
LLGstPlayThread *mPlayThread;
};
class LLMediaImplGStreamerMaker : public LLMediaImplMaker
{
public:
LLMediaImplGStreamerMaker();
LLMediaImplGStreamer* create()
{
return new LLMediaImplGStreamer();
}
};
/////////////////////////////////////////////////////////////////////////
// Debug/Info/Warning macros.
#define STDERRMSG(...) do{\
fprintf(stderr, "%s:%d: ", __FUNCTION__, __LINE__);\
fprintf(stderr, __VA_ARGS__);\
fputc('\n',stderr);\
}while(0)
#define NULLMSG(...) do{}while(0)
#define DEBUGMSG NULLMSG
#define INFOMSG STDERRMSG
#define WARNMSG STDERRMSG
/////////////////////////////////////////////////////////////////////////
///#endif // LL_GSTREAMER_ENABLED
#endif // llmediaimplgstreamer_h
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