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Original commit message from CVS: * gst/videotestsrc/gstvideotestsrc.c: * gst/videotestsrc/gstvideotestsrc.h: * gst/videotestsrc/videotestsrc.c: * gst/videotestsrc/videotestsrc.h: Add a test pattern called "circular", which has concentric rings with varying radial frequency. The main purpose of this pattern is to test fidelity loss in a filter or scaler element. Notably, this pattern is scale invariant, and is optimally viewed with a width (and height) of 400.
113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* GStreamer
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* Copyright (C) <2002> David A. Schleef <ds@schleef.org>
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_VIDEO_TEST_SRC_H__
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#define __GST_VIDEO_TEST_SRC_H__
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#include <gst/gst.h>
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#include <gst/base/gstpushsrc.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_TEST_SRC \
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(gst_video_test_src_get_type())
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#define GST_VIDEO_TEST_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_TEST_SRC,GstVideoTestSrc))
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#define GST_VIDEO_TEST_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_TEST_SRC,GstVideoTestSrcClass))
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#define GST_IS_VIDEO_TEST_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_TEST_SRC))
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#define GST_IS_VIDEO_TEST_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_TEST_SRC))
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/**
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* GstVideoTestSrcPattern:
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* @GST_VIDEO_TEST_SRC_SMPTE: A standard SMPTE test pattern
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* @GST_VIDEO_TEST_SRC_SNOW: Random noise
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* @GST_VIDEO_TEST_SRC_BLACK: A black image
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* @GST_VIDEO_TEST_SRC_WHITE: A white image
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* @GST_VIDEO_TEST_SRC_RED: A red image
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* @GST_VIDEO_TEST_SRC_GREEN: A green image
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* @GST_VIDEO_TEST_SRC_BLUE: A blue image
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* @GST_VIDEO_TEST_SRC_CHECKERS1: Checkers pattern (1px)
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* @GST_VIDEO_TEST_SRC_CHECKERS2: Checkers pattern (2px)
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* @GST_VIDEO_TEST_SRC_CHECKERS4: Checkers pattern (4px)
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* @GST_VIDEO_TEST_SRC_CHECKERS8: Checkers pattern (8px)
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* @GST_VIDEO_TEST_SRC_CIRCULAR: Circular pattern
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*
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* The test pattern to produce.
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*/
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typedef enum {
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GST_VIDEO_TEST_SRC_SMPTE,
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GST_VIDEO_TEST_SRC_SNOW,
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GST_VIDEO_TEST_SRC_BLACK,
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GST_VIDEO_TEST_SRC_WHITE,
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GST_VIDEO_TEST_SRC_RED,
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GST_VIDEO_TEST_SRC_GREEN,
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GST_VIDEO_TEST_SRC_BLUE,
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GST_VIDEO_TEST_SRC_CHECKERS1,
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GST_VIDEO_TEST_SRC_CHECKERS2,
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GST_VIDEO_TEST_SRC_CHECKERS4,
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GST_VIDEO_TEST_SRC_CHECKERS8,
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GST_VIDEO_TEST_SRC_CIRCULAR
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} GstVideoTestSrcPattern;
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typedef struct _GstVideoTestSrc GstVideoTestSrc;
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typedef struct _GstVideoTestSrcClass GstVideoTestSrcClass;
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/**
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* GstVideoTestSrc:
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*
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* Opaque data structure.
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*/
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struct _GstVideoTestSrc {
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GstPushSrc element;
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/*< private >*/
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/* type of output */
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GstVideoTestSrcPattern pattern_type;
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/* video state */
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char *format_name;
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gint width;
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gint height;
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struct fourcc_list_struct *fourcc;
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gint bpp;
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gint rate_numerator;
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gint rate_denominator;
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/* private */
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gint64 timestamp_offset; /* base offset */
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GstClockTime running_time; /* total running time */
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gint64 n_frames; /* total frames sent */
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void (*make_image) (GstVideoTestSrc *v, unsigned char *dest, int w, int h);
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};
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struct _GstVideoTestSrcClass {
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GstPushSrcClass parent_class;
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};
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GType gst_video_test_src_get_type (void);
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G_END_DECLS
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#endif /* __GST_VIDEO_TEST_SRC_H__ */
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