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videotestsrc: Add pinwheel and spokes patterns

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This commit is contained in:
David Schleef 2013-07-31 11:26:58 -07:00
parent 965546192d
commit 0c4beda8f0
4 changed files with 117 additions and 2 deletions
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10
gst/videotestsrc/gstvideotestsrc.c
View file

@ -149,6 +149,8 @@ gst_video_test_src_pattern_get_type (void)
{GST_VIDEO_TEST_SRC_BALL, "Moving ball", "ball"},
{GST_VIDEO_TEST_SRC_SMPTE100, "SMPTE 100% color bars", "smpte100"},
{GST_VIDEO_TEST_SRC_BAR, "Bar", "bar"},
{GST_VIDEO_TEST_SRC_PINWHEEL, "Pinwheel", "pinwheel"},
{GST_VIDEO_TEST_SRC_SPOKES, "Spokes", "spokes"},
{0, NULL, NULL}
};
@ -341,7 +343,7 @@ gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc,
{
videotestsrc->pattern_type = pattern_type;
GST_DEBUG_OBJECT (videotestsrc, "setting pattern to %d", pattern_type);
GST_ERROR_OBJECT (videotestsrc, "setting pattern to %d", pattern_type);
switch (pattern_type) {
case GST_VIDEO_TEST_SRC_SMPTE:
@ -407,6 +409,12 @@ gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc,
case GST_VIDEO_TEST_SRC_BAR:
videotestsrc->make_image = gst_video_test_src_bar;
break;
case GST_VIDEO_TEST_SRC_PINWHEEL:
videotestsrc->make_image = gst_video_test_src_pinwheel;
break;
case GST_VIDEO_TEST_SRC_SPOKES:
videotestsrc->make_image = gst_video_test_src_spokes;
break;
default:
g_assert_not_reached ();
}

6
gst/videotestsrc/gstvideotestsrc.h
View file

@ -62,6 +62,8 @@ G_BEGIN_DECLS
* @GST_VIDEO_TEST_SRC_BALL: Moving ball
* @GST_VIDEO_TEST_SRC_SMPTE100: SMPTE test pattern (100% color bars)
* @GST_VIDEO_TEST_SRC_BAR: Bar with foreground color
* @GST_VIDEO_TEST_SRC_PINWHEEL: Pinwheel
* @GST_VIDEO_TEST_SRC_SPOKES: Spokes
*
* The test pattern to produce.
*
@ -103,7 +105,9 @@ typedef enum {
GST_VIDEO_TEST_SRC_SOLID,
GST_VIDEO_TEST_SRC_BALL,
GST_VIDEO_TEST_SRC_SMPTE100,
GST_VIDEO_TEST_SRC_BAR
GST_VIDEO_TEST_SRC_BAR,
GST_VIDEO_TEST_SRC_PINWHEEL,
GST_VIDEO_TEST_SRC_SPOKES
} GstVideoTestSrcPattern;
typedef struct _GstVideoTestSrc GstVideoTestSrc;

101
gst/videotestsrc/videotestsrc.c
View file

@ -1222,3 +1222,104 @@ convert_hline_bayer (paintinfo * p, GstVideoFrame * frame, int y)
}
}
}
void
gst_video_test_src_pinwheel (GstVideoTestSrc * v, GstVideoFrame * frame)
{
int i;
int j;
int k;
int t = v->n_frames;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = π
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
double c[20];
double s[20];
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (k = 0; k < 19; k++) {
double theta = M_PI / 19 * k + 0.001 * v->kt * t;
c[k] = cos (theta);
s[k] = sin (theta);
}
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
double v;
v = 0;
for (k = 0; k < 19; k++) {
double x, y;
x = c[k] * (i - 0.5 * w) + s[k] * (j - 0.5 * h);
x *= 1.0;
y = CLAMP (x, -1, 1);
if (k & 1)
y = -y;
v += y;
}
p->tmpline_u8[i] = CLAMP (rint (v * 128 + 128), 0, 255);
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}
void
gst_video_test_src_spokes (GstVideoTestSrc * v, GstVideoFrame * frame)
{
int i;
int j;
int k;
int t = v->n_frames;
paintinfo pi = PAINT_INFO_INIT;
paintinfo *p = &pi;
struct vts_color_struct color;
int w = frame->info.width, h = frame->info.height;
double c[20];
double s[20];
videotestsrc_setup_paintinfo (v, p, w, h);
color = p->colors[COLOR_BLACK];
p->color = &color;
for (k = 0; k < 19; k++) {
double theta = M_PI / 19 * k + 0.001 * v->kt * t;
c[k] = cos (theta);
s[k] = sin (theta);
}
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
double v;
v = 0;
for (k = 0; k < 19; k++) {
double x, y;
double sharpness = 1.0;
double linewidth = 2.0;
x = c[k] * (i - 0.5 * w) + s[k] * (j - 0.5 * h);
x = linewidth * 0.5 - fabs (x);
x *= sharpness;
y = CLAMP (x + 0.5, 0.0, 1.0);
v += y;
}
p->tmpline_u8[i] = CLAMP (rint (v * 255), 0, 255);
}
videotestsrc_blend_line (v, p->tmpline, p->tmpline_u8,
&p->foreground_color, &p->background_color, w);
videotestsrc_convert_tmpline (p, frame, j);
}
}

2
gst/videotestsrc/videotestsrc.h
View file

@ -80,5 +80,7 @@ void gst_video_test_src_chromazoneplate (GstVideoTestSrc * v, GstVideoFrame *
void gst_video_test_src_ball (GstVideoTestSrc * v, GstVideoFrame *frame);
void gst_video_test_src_smpte100 (GstVideoTestSrc * v, GstVideoFrame *frame);
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);
#endif