GST_END_TEST;
+
+GST_START_TEST (test_overlay_composition_global_alpha)
+{
+ GstVideoOverlayRectangle *rect1;
+ GstBuffer *pix1, *pix2, *pix3, *pix4, *pix5;
+ guint8 *data2, *data4, *data5;
+ guint w, h, stride, stride3, w4, h4, stride4, stride5;
+ guint seq1, seq2;
+ gfloat ga1, ga2;
+ GstVideoOverlayFormatFlags flags1;
+
+ pix1 = gst_buffer_new_and_alloc (200 * sizeof (guint32) * 50);
+ memset (GST_BUFFER_DATA (pix1), 0x80, GST_BUFFER_SIZE (pix1));
+
+ rect1 = gst_video_overlay_rectangle_new_argb (pix1, 200, 50, 200 * 4,
+ 600, 50, 300, 50, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
+ gst_buffer_unref (pix1);
+
+ /* same flags, unscaled, should be the same buffer */
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
+ fail_unless (pix1 == pix2);
+
+ /* same flags, but scaled */
+ pix3 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride3,
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
+ fail_if (pix3 == pix1 || pix3 == pix2);
+
+ /* get unscaled premultiplied data, new cached rectangle should be created */
+ pix4 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w4, &h4,
+ &stride4, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
+ fail_if (pix4 == pix2 || pix4 == pix3);
+ fail_unless_equals_int (stride, stride4);
+ fail_unless_equals_int (w, w4);
+ fail_unless_equals_int (h, h4);
+ fail_unless_equals_int (GST_BUFFER_SIZE (pix2), GST_BUFFER_SIZE (pix4));
+ data4 = GST_BUFFER_DATA (pix4);
+ fail_if (memcmp (data4, GST_BUFFER_DATA (pix1), GST_BUFFER_SIZE (pix1)) == 0);
+ /* make sure it actually did what we expected it to do (input=0x80808080) */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data4[0], 0x40);
+ fail_unless_equals_int (data4[1], 0x40);
+ fail_unless_equals_int (data4[2], 0x40);
+ fail_unless_equals_int (data4[3], 0x80);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data4[0], 0x80);
+ fail_unless_equals_int (data4[1], 0x40);
+ fail_unless_equals_int (data4[2], 0x40);
+ fail_unless_equals_int (data4[3], 0x40);
+#endif
+
+ /* now premultiplied and scaled, again a new cached rectangle should be cached */
+ pix5 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride5,
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
+ fail_if (pix5 == pix2 || pix5 == pix3 || pix5 == pix4);
+ /* stride and size should be equal to the first scaled rect */
+ fail_unless_equals_int (stride5, stride3);
+ fail_unless_equals_int (GST_BUFFER_SIZE (pix3), GST_BUFFER_SIZE (pix3));
+ data5 = GST_BUFFER_DATA (pix5);
+ /* data should be different (premutliplied) though */
+ fail_if (memcmp (data5, GST_BUFFER_DATA (pix3), GST_BUFFER_SIZE (pix3)) == 0);
+ /* make sure it actually did what we expected it to do (input=0x80808080) */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data5[0], 0x40);
+ fail_unless_equals_int (data5[1], 0x40);
+ fail_unless_equals_int (data5[2], 0x40);
+ fail_unless_equals_int (data5[3], 0x80);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data5[0], 0x80);
+ fail_unless_equals_int (data5[1], 0x40);
+ fail_unless_equals_int (data5[2], 0x40);
+ fail_unless_equals_int (data5[3], 0x40);
+#endif
+
+ /* global_alpha should initially be 1.0 */
+ ga1 = gst_video_overlay_rectangle_get_global_alpha (rect1);
+ fail_unless_equals_float (ga1, 1.0);
+
+ /* now set global_alpha */
+ seq1 = gst_video_overlay_rectangle_get_seqnum (rect1);
+ gst_video_overlay_rectangle_set_global_alpha (rect1, 0.5);
+ ga2 = gst_video_overlay_rectangle_get_global_alpha (rect1);
+ fail_unless_equals_float (ga2, 0.5);
+
+ /* seqnum should have changed */
+ seq2 = gst_video_overlay_rectangle_get_seqnum (rect1);
+ fail_unless (seq1 < seq2);
+
+ /* internal flags should have been set */
+ flags1 = gst_video_overlay_rectangle_get_flags (rect1);
+ fail_unless_equals_int (flags1, GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
+
+ /* request unscaled pixel-data, global-alpha not applied */
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
+ /* this should just return the same buffer */
+ fail_unless (pix2 == pix1);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
+ GST_BUFFER_SIZE (pix1)) == 0);
+ /* make sure we got the initial data (input=0x80808080) */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#endif
+
+ /* unscaled pixel-data, global-alpha applied */
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
+ /* this should be the same buffer with on-the-fly modified alpha-channel */
+ fail_unless (pix2 == pix1);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
+ GST_BUFFER_SIZE (pix1)) == 0);
+ /* make sure we got the initial data with adjusted alpha-channel */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x40);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x40);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#endif
+
+ /* adjust global_alpha once more */
+ gst_video_overlay_rectangle_set_global_alpha (rect1, 0.25);
+ ga2 = gst_video_overlay_rectangle_get_global_alpha (rect1);
+ fail_unless_equals_float (ga2, 0.25);
+ /* and again request unscaled pixel-data, global-alpha applied */
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
+ fail_unless (pix2 == pix1);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
+ GST_BUFFER_SIZE (pix1)) == 0);
+ /* make sure we got the initial data with adjusted alpha-channel */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x20);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x20);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#endif
+
+ /* again: unscaled pixel-data, global-alpha not applied,
+ * this should revert alpha-channel to initial values */
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
+ fail_unless (pix2 == pix1);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
+ GST_BUFFER_SIZE (pix1)) == 0);
+ /* make sure we got the initial data (input=0x80808080) */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#endif
+
+ /* now scaled, global-alpha not applied */
+ pix2 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride,
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
+ /* this should just return the rect/buffer, that was cached for these
+ * scaling dimensions */
+ fail_unless (pix2 == pix3);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix3),
+ GST_BUFFER_SIZE (pix3)) == 0);
+ /* make sure we got the initial data (input=0x80808080) */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#endif
+
+ /* scaled, global-alpha (0.25) applied */
+ pix2 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride,
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
+ /* this should just return the rect/buffer, that was cached for these
+ * scaling dimensions with modified alpha channel */
+ fail_unless (pix2 == pix3);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix3),
+ GST_BUFFER_SIZE (pix3)) == 0);
+ /* make sure we got the data we expect for global-alpha=0.25 */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x20);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x20);
+ fail_unless_equals_int (data2[1], 0x80);
+ fail_unless_equals_int (data2[2], 0x80);
+ fail_unless_equals_int (data2[3], 0x80);
+#endif
+
+ /* now unscaled premultiplied data, global-alpha not applied,
+ * is this really a valid use case?*/
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA |
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
+ /* this should just return the rect/buffer, that was cached for the
+ * premultiplied data */
+ fail_unless (pix2 == pix4);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix4),
+ GST_BUFFER_SIZE (pix4)) == 0);
+ /* make sure we got what we expected */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x40);
+ fail_unless_equals_int (data2[1], 0x40);
+ fail_unless_equals_int (data2[2], 0x40);
+ fail_unless_equals_int (data2[3], 0x80);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x40);
+ fail_unless_equals_int (data2[2], 0x40);
+ fail_unless_equals_int (data2[3], 0x40);
+#endif
+
+ /* unscaled premultiplied data, global-alpha (0.25) applied */
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
+ /* this should just return the rect/buffer, that was cached for the
+ * premultiplied data */
+ fail_unless (pix2 == pix4);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix4),
+ GST_BUFFER_SIZE (pix4)) == 0);
+ /* make sure we got what we expected:
+ * (0x40 / (0x80/0xFF) * (0x20/0xFF) = 0x10
+ * NOTE: unless we are using round() for the premultiplied case
+ * in gst_video_overlay_rectangle_apply_global_alpha() we get rounding
+ * error, i.e. 0x0F here */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x0F);
+ fail_unless_equals_int (data2[1], 0x0F);
+ fail_unless_equals_int (data2[2], 0x0F);
+ fail_unless_equals_int (data2[3], 0x20);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x20);
+ fail_unless_equals_int (data2[1], 0x0F);
+ fail_unless_equals_int (data2[2], 0x0F);
+ fail_unless_equals_int (data2[3], 0x0F);
+#endif
+
+ /* set global_alpha once more */
+ gst_video_overlay_rectangle_set_global_alpha (rect1, 0.75);
+ /* and verify that also premultiplied data is adjusted
+ * correspondingly (though with increasing rounding errors) */
+ pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
+ &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
+ /* this should just return the rect/buffer, that was cached for the
+ * premultiplied data */
+ fail_unless (pix2 == pix4);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix4),
+ GST_BUFFER_SIZE (pix4)) == 0);
+ /* make sure we got what we expected:
+ * (0x0F / (0x20/0xFF) * (0x60/0xFF) = 0x2D
+ * NOTE: using floats everywhere we would get 0x30
+ * here we will actually end up with 0x2C */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x2C);
+ fail_unless_equals_int (data2[1], 0x2C);
+ fail_unless_equals_int (data2[2], 0x2C);
+ fail_unless_equals_int (data2[3], 0x60);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x60);
+ fail_unless_equals_int (data2[1], 0x2C);
+ fail_unless_equals_int (data2[2], 0x2C);
+ fail_unless_equals_int (data2[3], 0x2C);
+#endif
+
+ /* now scaled and premultiplied data, global-alpha not applied,
+ * is this really a valid use case?*/
+ pix2 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride,
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA |
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
+ /* this should just return the rect/buffer, that was cached for the
+ * first premultiplied+scaled rect*/
+ fail_unless (pix2 == pix5);
+ fail_unless (stride == stride5);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix5),
+ GST_BUFFER_SIZE (pix5)) == 0);
+ /* make sure we got what we expected */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x40);
+ fail_unless_equals_int (data2[1], 0x40);
+ fail_unless_equals_int (data2[2], 0x40);
+ fail_unless_equals_int (data2[3], 0x80);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x80);
+ fail_unless_equals_int (data2[1], 0x40);
+ fail_unless_equals_int (data2[2], 0x40);
+ fail_unless_equals_int (data2[3], 0x40);
+#endif
+
+ /* scaled and premultiplied data, global-alpha applied */
+ pix2 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride,
+ GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
+ /* this should just return the rect/buffer, that was cached for the
+ * first premultiplied+scaled rect*/
+ fail_unless (pix2 == pix5);
+ fail_unless (stride == stride5);
+ data2 = GST_BUFFER_DATA (pix2);
+ fail_unless (memcmp (data2, GST_BUFFER_DATA (pix5),
+ GST_BUFFER_SIZE (pix5)) == 0);
+ /* make sure we got what we expected; see above note about rounding errors! */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+ /* B - G - R - A */
+ fail_unless_equals_int (data2[0], 0x2F);
+ fail_unless_equals_int (data2[1], 0x2F);
+ fail_unless_equals_int (data2[2], 0x2F);
+ fail_unless_equals_int (data2[3], 0x60);
+#else
+ /* A - R - G - B */
+ fail_unless_equals_int (data2[0], 0x60);
+ fail_unless_equals_int (data2[1], 0x2F);
+ fail_unless_equals_int (data2[2], 0x2F);
+ fail_unless_equals_int (data2[3], 0x2F);
+#endif
+
+ gst_video_overlay_rectangle_unref (rect1);
+}
+
+GST_END_TEST;
+
static Suite *
video_suite (void)
{
tcase_add_test (tc_chain, test_video_size_from_caps);
tcase_add_test (tc_chain, test_overlay_composition);
tcase_add_test (tc_chain, test_overlay_composition_premultiplied_alpha);
+ tcase_add_test (tc_chain, test_overlay_composition_global_alpha);
return s;
}