videotestsrc: add moving color bars pattern

This pattern is moving the color bars with a given
speed. Negative speed is inverting the moving direction.

https://bugzilla.gnome.org/show_bug.cgi?id=628500

diff --git a/gst/videotestsrc/gstvideotestsrc.c b/gst/videotestsrc/gstvideotestsrc.c
index fe3a99b..df9ab05 100644 (file)
--- a/gst/videotestsrc/gstvideotestsrc.c
+++ b/gst/videotestsrc/gstvideotestsrc.c
@@ -53,6 +53,7 @@ GST_DEBUG_CATEGORY_STATIC (video_test_src_debug);
 #define DEFAULT_COLOR_SPEC         GST_VIDEO_TEST_SRC_BT601
 #define DEFAULT_FOREGROUND_COLOR   0xffffffff
 #define DEFAULT_BACKGROUND_COLOR   0xff000000
+#define DEFAULT_MOVING_SPEED       1
 
 enum
 {
@@ -76,6 +77,7 @@ enum
   PROP_YOFFSET,
   PROP_FOREGROUND_COLOR,
   PROP_BACKGROUND_COLOR,
+  PROP_MOVING_SPEED,
   PROP_LAST
 };
 
@@ -132,6 +134,8 @@ gst_video_test_src_pattern_get_type (void)
         "chroma-zone-plate"},
     {GST_VIDEO_TEST_SRC_SOLID, "Solid color", "solid-color"},
     {GST_VIDEO_TEST_SRC_BALL, "Moving ball", "ball"},
+    {GST_VIDEO_TEST_SRC_MOVING_COLOR_BARS, "Moving color bars",
+        "moving-color-bars"},
     {0, NULL, NULL}
   };
 
@@ -293,6 +297,12 @@ gst_video_test_src_class_init (GstVideoTestSrcClass * klass)
           DEFAULT_BACKGROUND_COLOR,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+  g_object_class_install_property (gobject_class, PROP_MOVING_SPEED,
+      g_param_spec_int ("moving-speed", "Move color bars with this speed",
+          "Move bars every frame with this amount of pixels (negative is inverse direction)",
+          G_MININT32, G_MAXINT32, DEFAULT_MOVING_SPEED,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   gstbasesrc_class->get_caps = gst_video_test_src_getcaps;
   gstbasesrc_class->set_caps = gst_video_test_src_setcaps;
   gstbasesrc_class->is_seekable = gst_video_test_src_is_seekable;
@@ -316,6 +326,7 @@ gst_video_test_src_init (GstVideoTestSrc * src, GstVideoTestSrcClass * g_class)
   src->timestamp_offset = DEFAULT_TIMESTAMP_OFFSET;
   src->foreground_color = DEFAULT_FOREGROUND_COLOR;
   src->background_color = DEFAULT_BACKGROUND_COLOR;
+  src->moving_speed = DEFAULT_MOVING_SPEED;
 
   /* we operate in time */
   gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
@@ -411,6 +422,9 @@ gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc,
     case GST_VIDEO_TEST_SRC_BALL:
       videotestsrc->make_image = gst_video_test_src_ball;
       break;
+    case GST_VIDEO_TEST_SRC_MOVING_COLOR_BARS:
+      videotestsrc->make_image = gst_video_test_src_moving_color_bars;
+      break;
     default:
       g_assert_not_reached ();
   }
@@ -479,6 +493,8 @@ gst_video_test_src_set_property (GObject * object, guint prop_id,
     case PROP_BACKGROUND_COLOR:
       src->background_color = g_value_get_uint (value);
       break;
+    case PROP_MOVING_SPEED:
+      src->moving_speed = g_value_get_int (value);
     default:
       break;
   }
@@ -547,6 +563,9 @@ gst_video_test_src_get_property (GObject * object, guint prop_id,
     case PROP_BACKGROUND_COLOR:
       g_value_set_uint (value, src->background_color);
       break;
+    case PROP_MOVING_SPEED:
+      g_value_set_int (value, src->moving_speed);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;

diff --git a/gst/videotestsrc/gstvideotestsrc.h b/gst/videotestsrc/gstvideotestsrc.h
index 019de49..f532353 100644 (file)
--- a/gst/videotestsrc/gstvideotestsrc.h
+++ b/gst/videotestsrc/gstvideotestsrc.h
@@ -57,6 +57,7 @@ G_BEGIN_DECLS
  * @GST_VIDEO_TEST_SRC_GAMUT: Gamut checking pattern
  * @GST_VIDEO_TEST_SRC_CHROMA_ZONE_PLATE: Chroma zone plate
  * @GST_VIDEO_TEST_SRC_BALL: Moving ball
+ * @GST_VIDEO_TEST_SRC_MOVING_COLOR_BARS: Moving color bars
  *
  * The test pattern to produce.
  *
@@ -96,7 +97,8 @@ typedef enum {
   GST_VIDEO_TEST_SRC_GAMUT,
   GST_VIDEO_TEST_SRC_CHROMA_ZONE_PLATE,
   GST_VIDEO_TEST_SRC_SOLID,
-  GST_VIDEO_TEST_SRC_BALL
+  GST_VIDEO_TEST_SRC_BALL,
+  GST_VIDEO_TEST_SRC_MOVING_COLOR_BARS
 } GstVideoTestSrcPattern;
 
 /**
@@ -165,6 +167,10 @@ struct _GstVideoTestSrc {
 
   gint zoneplate_t;
   
+  /* moving color bars */
+  gint moving_offset;
+  gint moving_speed;
+
   void (*make_image) (GstVideoTestSrc *v, unsigned char *dest, int w, int h);
 };
 

diff --git a/gst/videotestsrc/videotestsrc.c b/gst/videotestsrc/videotestsrc.c
index d4c61a6..de25727 100644 (file)
--- a/gst/videotestsrc/videotestsrc.c
+++ b/gst/videotestsrc/videotestsrc.c
@@ -1638,6 +1638,60 @@ gst_video_test_src_ball (GstVideoTestSrc * v, unsigned char *dest, int w, int h)
   v->zoneplate_t++;
 }
 
+void
+gst_video_test_src_moving_color_bars (GstVideoTestSrc * v, unsigned char *dest,
+    int w, int h)
+{
+  int i, j;
+  paintinfo pi = { NULL, };
+  paintinfo *p = π
+  struct fourcc_list_struct *fourcc;
+  int offset;
+
+  videotestsrc_setup_paintinfo (v, p, w, h);
+
+  fourcc = v->fourcc;
+  if (fourcc == NULL)
+    return;
+
+  fourcc->paint_setup (p, dest);
+
+  offset = v->moving_offset;
+  v->moving_offset += v->moving_speed;
+  if (v->moving_offset >= w) {
+    v->moving_offset -= w;
+  } else if (v->moving_offset < 0) {
+    v->moving_offset += w;
+  }
+
+  /* color bars */
+  for (i = 0; i < 7; i++) {
+    int w1, w2 = 0;
+    int x1 = i * w / 7 + offset;
+    int x2 = (i + 1) * w / 7 + offset;
+
+    if (x1 > w) {
+      x1 -= w;
+      x2 -= w;
+    }
+
+    if (x2 > w) {
+      w1 = w - x1;
+      w2 = (x2 - x1) - w1;
+    } else {
+      w1 = x2 - x1;
+    }
+
+    p->color = p->colors + i;
+    for (j = 0; j < h; j++) {
+      if (x2 > w) {
+        p->paint_hline (p, 0, j, w2);
+      }
+      p->paint_hline (p, x1, j, w1);
+    }
+  }
+}
+
 
 static void
 paint_setup_I420 (paintinfo * p, unsigned char *dest)

diff --git a/gst/videotestsrc/videotestsrc.h b/gst/videotestsrc/videotestsrc.h
index 21c5c16..f4e221f 100644 (file)
--- a/gst/videotestsrc/videotestsrc.h
+++ b/gst/videotestsrc/videotestsrc.h
@@ -118,6 +118,8 @@ void    gst_video_test_src_chromazoneplate (GstVideoTestSrc * v,
                                         unsigned char *dest, int w, int h);
 void    gst_video_test_src_ball         (GstVideoTestSrc * v,
                                         unsigned char *dest, int w, int h);
+void gst_video_test_src_moving_color_bars (GstVideoTestSrc * v,
+                                 unsigned char *dest, int w, int h);
 extern struct fourcc_list_struct fourcc_list[];
 extern int n_fourccs;