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/**
* @file llmediaimplgstreamervidplug.h
* @brief Video-consuming static GStreamer plugin for gst-to-LLMediaImpl
*
* $LicenseInfo:firstyear=2007&license=viewergpl$
*
* 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.
* $/LicenseInfo$
*/
#ifndef __GST_SLVIDEO_H__
#define __GST_SLVIDEO_H__
#if LL_GSTREAMER_ENABLED
extern "C" {
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideosink.h>
}
G_BEGIN_DECLS
/* #defines don't like whitespacey bits */
#define GST_TYPE_SLVIDEO \
(gst_slvideo_get_type())
#define GST_SLVIDEO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SLVIDEO,GstSLVideo))
#define GST_SLVIDEO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SLVIDEO,GstSLVideoClass))
#define GST_IS_SLVIDEO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SLVIDEO))
#define GST_IS_SLVIDEO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SLVIDEO))
typedef struct _GstSLVideo GstSLVideo;
typedef struct _GstSLVideoClass GstSLVideoClass;
typedef enum {
SLV_PF_UNKNOWN = 0,
SLV_PF_RGBX = 1,
SLV_PF_BGRX = 2,
SLV__END = 3
} SLVPixelFormat;
const int SLVPixelFormatBytes[SLV__END] = {1, 4, 4};
struct _GstSLVideo
{
GstVideoSink video_sink;
GstCaps *caps;
int fps_n, fps_d;
int par_n, par_d;
int height, width;
SLVPixelFormat format;
// SHARED WITH APPLICATION:
// Access to the following should be protected by GST_OBJECT_LOCK() on
// the GstSLVideo object, and should be totally consistent upon UNLOCK
// (i.e. all written at once to reflect the current retained frame info
// when the retained frame is updated.)
bool retained_frame_ready; // new frame ready since flag last reset. (*TODO: could get the writer to wait on a semaphore instead of having the reader poll, potentially making dropped frames somewhat cheaper.)
unsigned char* retained_frame_data;
int retained_frame_allocbytes;
int retained_frame_width, retained_frame_height;
SLVPixelFormat retained_frame_format;
};
struct _GstSLVideoClass
{
GstVideoSinkClass parent_class;
};
GType gst_slvideo_get_type (void);
void gst_slvideo_init_class (void);
G_END_DECLS
#endif // LL_GSTREAMER_ENABLED
#endif /* __GST_SLVIDEO_H__ */
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