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140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/* GStreamer
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* Copyright (C) <2009> Руслан Ижбулатов <lrn1986 _at_ gmail _dot_ com>
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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; either
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* version 2.1 of the License, or (at your option) any later version.
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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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* 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,
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* Boston, MA 02110-1301 USA
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*/
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#ifndef __GST_SSIM_H__
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#define __GST_SSIM_H__
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads2.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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enum
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{
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PROP_0,
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PROP_SSIM_TYPE,
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PROP_WINDOW_TYPE,
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PROP_WINDOW_SIZE,
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PROP_GAUSS_SIGMA,
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};
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#define GST_TYPE_SSIM (gst_ssim_get_type())
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#define GST_SSIM(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), \
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GST_TYPE_SSIM,GstSSim))
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#define GST_IS_SSIM(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), \
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GST_TYPE_SSIM))
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#define GST_SSIM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) , \
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GST_TYPE_SSIM,GstSSimClass))
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#define GST_IS_SSIM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) , \
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GST_TYPE_SSIM))
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#define GST_SSIM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) , \
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GST_TYPE_SSIM,GstSSimClass))
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typedef struct _GstSSim GstSSim;
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typedef struct _GstSSimClass GstSSimClass;
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typedef struct _GstSSimWindowCache {
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gint x_window_start;
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gint x_weight_start;
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gint x_window_end;
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gint y_window_start;
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gint y_weight_start;
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gint y_window_end;
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gfloat element_summ;
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} GstSSimWindowCache;
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typedef void (*GstSSimFunction) (GstSSim *ssim, guint8 *org, gfloat *orgmu,
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guint8 *mod, guint8 *out, gfloat *mean, gfloat *lowest, gfloat *highest);
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typedef struct _GstSSimOutputContext GstSSimOutputContext;
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/* TODO: check if all fields are used */
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struct _GstSSimOutputContext {
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GstPad *pad;
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gboolean segment_pending;
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};
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/**
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* GstSSim:
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*
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* The ssim object structure.
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*/
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struct _GstSSim {
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GstElement element;
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/* Array of GstSSimOutputContext */
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GPtrArray *src;
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gint padcount;
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GstCollectPads2 *collect;
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GstPad *orig;
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gint frame_rate;
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gint frame_rate_base;
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gint width;
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gint height;
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GstCaps *sinkcaps;
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GstCaps *srccaps;
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/* SSIM type (0 - canonical; 1 - without mu) */
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gint ssimtype;
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/* Size of a window, windows are square */
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gint windowsize;
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/* Type of a weight-generator. 0 - no weighting. 1 - Gaussian weighting */
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gint windowtype;
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/* Array of width*height GstSSimWindowCaches */
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GstSSimWindowCache *windows;
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/* Array of windowsize*windowsize gfloats */
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gfloat *weights;
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/* For Gaussian function */
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gfloat sigma;
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GstSSimFunction func;
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gfloat const1;
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gfloat const2;
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/* counters to keep track of timestamps */
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gint64 timestamp;
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gint64 offset;
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/* sink event handling */
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GstPadEventFunction collect_event;
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GstSegment segment;
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guint64 segment_position;
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gdouble segment_rate;
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};
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struct _GstSSimClass {
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GstElementClass parent_class;
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};
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GType gst_ssim_get_type (void);
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G_END_DECLS
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#endif /* __GST_SSIM_H__ */
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