/* * GStreamer * Copyright (C) 2010 Robert Swain <robert.swain@collabora.co.uk> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Alternatively, the contents of this file may be used under the * GNU Lesser General Public License Version 2.1 (the "LGPL"), in * which case the following provisions apply instead of the ones * mentioned above: * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifndef __GST_FIELDANALYSIS_H__ #define __GST_FIELDANALYSIS_H__ #include <gst/gst.h> G_BEGIN_DECLS #define GST_TYPE_FIELDANALYSIS \ (gst_field_analysis_get_type()) #define GST_FIELDANALYSIS(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FIELDANALYSIS,GstFieldAnalysis)) #define GST_FIELDANALYSIS_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FIELDANALYSIS,GstFieldAnalysisClass)) #define GST_IS_FIELDANALYSIS(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FIELDANALYSIS)) #define GST_IS_FIELDANALYSIS_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FIELDANALYSIS)) typedef struct _GstFieldAnalysis GstFieldAnalysis; typedef struct _GstFieldAnalysisClass GstFieldAnalysisClass; typedef struct _FieldAnalysisFields FieldAnalysisFields; typedef struct _FieldAnalysisHistory FieldAnalysisHistory; typedef struct _FieldAnalysis FieldAnalysis; typedef enum { FIELD_ANALYSIS_PROGRESSIVE, FIELD_ANALYSIS_INTERLACED, FIELD_ANALYSIS_TELECINE_PROGRESSIVE, FIELD_ANALYSIS_TELECINE_MIXED } FieldAnalysisConclusion; enum FieldParity { TOP_FIELD, BOTTOM_FIELD, BOTH_FIELDS }; struct _FieldAnalysis { /* frame, top, bottom, top with prev bottom, bottom with prev top */ gfloat f, t, b, t_b, b_t; FieldAnalysisConclusion conclusion; /* -1 - unknown; 0 - holding none; 1 - top field; 2 - bottom field; 3 - both */ gint holding; gboolean drop; }; struct _FieldAnalysisFields { GstVideoFrame frame; gboolean parity; }; struct _FieldAnalysisHistory { GstVideoFrame frame; FieldAnalysis results; }; typedef enum { METHOD_32DETECT, METHOD_IS_COMBED, METHOD_5_TAP } FieldAnalysisCombMethod; struct _GstFieldAnalysis { GstElement element; GstPad *sinkpad, *srcpad; guint nframes; FieldAnalysisHistory frames[2]; GstVideoInfo vinfo; gfloat (*same_field) (GstFieldAnalysis *, FieldAnalysisFields (*)[2]); gfloat (*same_frame) (GstFieldAnalysis *, FieldAnalysisFields (*)[2]); guint64 (*block_score_for_row) (GstFieldAnalysis *, FieldAnalysisFields (*)[2], guint8 *, guint8 *); gboolean is_telecine; gboolean first_buffer; /* indicates the first buffer for which a buffer will be output * after a discont or flushing seek */ guint8 *comb_mask; guint *block_scores; gboolean flushing; /* indicates whether we are flushing or not */ /* properties */ guint32 noise_floor; /* threshold for the result of a metric to be valid */ gfloat field_thresh; /* threshold used for the same parity field metric */ gfloat frame_thresh; /* threshold used for the opposite parity field metric */ gint64 spatial_thresh; /* threshold used spatial comb detection */ guint64 block_width, block_height; /* width/height of window used for comb clusted detection */ guint64 block_thresh; guint64 ignored_lines; }; struct _GstFieldAnalysisClass { GstElementClass parent_class; }; GType gst_field_analysis_get_type (void); GST_ELEMENT_REGISTER_DECLARE (fieldanalysis); G_END_DECLS #endif /* __GST_FIELDANALYSIS_H__ */