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videotestsrc: add gradient pattern

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Makes a gradient between background and foreground color.
This commit is contained in:
Wim Taymans 2014-10-08 11:26:24 +02:00
parent e115e5059b
commit 042b25542c
4 changed files with 33 additions and 1 deletions
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4
gst/videotestsrc/gstvideotestsrc.c
View file

@ -151,6 +151,7 @@ gst_video_test_src_pattern_get_type (void)
{GST_VIDEO_TEST_SRC_BAR, "Bar", "bar"},
{GST_VIDEO_TEST_SRC_PINWHEEL, "Pinwheel", "pinwheel"},
{GST_VIDEO_TEST_SRC_SPOKES, "Spokes", "spokes"},
{GST_VIDEO_TEST_SRC_GRADIENT, "Gradient", "gradient"},
{0, NULL, NULL}
};
@ -423,6 +424,9 @@ gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc,
case GST_VIDEO_TEST_SRC_SPOKES:
videotestsrc->make_image = gst_video_test_src_spokes;
break;
case GST_VIDEO_TEST_SRC_GRADIENT:
videotestsrc->make_image = gst_video_test_src_gradient;
break;
default:
g_assert_not_reached ();
}

3
gst/videotestsrc/gstvideotestsrc.h
View file

@ -107,7 +107,8 @@ typedef enum {
GST_VIDEO_TEST_SRC_SMPTE100,
GST_VIDEO_TEST_SRC_BAR,
GST_VIDEO_TEST_SRC_PINWHEEL,
GST_VIDEO_TEST_SRC_SPOKES
GST_VIDEO_TEST_SRC_SPOKES,
GST_VIDEO_TEST_SRC_GRADIENT
} GstVideoTestSrcPattern;
typedef struct _GstVideoTestSrc GstVideoTestSrc;

26
gst/videotestsrc/videotestsrc.c
View file

@ -1336,3 +1336,29 @@ gst_video_test_src_spokes (GstVideoTestSrc * v, GstVideoFrame * frame)
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_gradient (GstVideoTestSrc * v, GstVideoFrame * frame)
{
int i;
int j;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = π
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (j = 0; j < h; j++) {
int y = j * 255.0 / h;
for (i = 0; i < w; i++) {
p->tmpline_u8[i] = y;
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}

1
gst/videotestsrc/videotestsrc.h
View file

@ -82,5 +82,6 @@ void gst_video_test_src_smpte100 (GstVideoTestSrc * v, GstVideoFrame *fra
void gst_video_test_src_bar (GstVideoTestSrc * v, GstVideoFrame *frame);
void gst_video_test_src_pinwheel (GstVideoTestSrc * v, GstVideoFrame * frame);
void gst_video_test_src_spokes (GstVideoTestSrc * v, GstVideoFrame * frame);
void gst_video_test_src_gradient (GstVideoTestSrc * v, GstVideoFrame * frame);
#endif