106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/**
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* @file llmediaimplgstreamervidplug.h
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* @brief Video-consuming static GStreamer plugin for gst-to-LLMediaImpl
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*
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* @cond
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* $LicenseInfo:firstyear=2007&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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* @endcond
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*/
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#ifndef __GST_SLVIDEO_H__
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#define __GST_SLVIDEO_H__
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#if LL_GSTREAMER010_ENABLED
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extern "C" {
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideosink.h>
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}
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G_BEGIN_DECLS
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/* #defines don't like whitespacey bits */
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#define GST_TYPE_SLVIDEO \
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(gst_slvideo_get_type())
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#define GST_SLVIDEO(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SLVIDEO,GstSLVideo))
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#define GST_SLVIDEO_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SLVIDEO,GstSLVideoClass))
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#define GST_IS_SLVIDEO(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SLVIDEO))
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#define GST_IS_SLVIDEO_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SLVIDEO))
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typedef struct _GstSLVideo GstSLVideo;
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typedef struct _GstSLVideoClass GstSLVideoClass;
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typedef enum {
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SLV_PF_UNKNOWN = 0,
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SLV_PF_RGBX = 1,
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SLV_PF_BGRX = 2,
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SLV__END = 3
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} SLVPixelFormat;
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const int SLVPixelFormatBytes[SLV__END] = {1, 4, 4};
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struct _GstSLVideo
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{
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GstVideoSink video_sink;
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GstCaps *caps;
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int fps_n, fps_d;
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int par_n, par_d;
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int height, width;
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SLVPixelFormat format;
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// SHARED WITH APPLICATION:
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// Access to the following should be protected by GST_OBJECT_LOCK() on
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// the GstSLVideo object, and should be totally consistent upon UNLOCK
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// (i.e. all written at once to reflect the current retained frame info
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// when the retained frame is updated.)
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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.)
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unsigned char* retained_frame_data;
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int retained_frame_allocbytes;
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int retained_frame_width, retained_frame_height;
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SLVPixelFormat retained_frame_format;
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// sticky resize info
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bool resize_forced_always;
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int resize_try_width;
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int resize_try_height;
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};
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struct _GstSLVideoClass
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{
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GstVideoSinkClass parent_class;
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};
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GType gst_slvideo_get_type (void);
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void gst_slvideo_init_class (void);
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G_END_DECLS
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#endif // LL_GSTREAMER010_ENABLED
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#endif /* __GST_SLVIDEO_H__ */
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