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tests: add unit test for video overlay composition global alpha support
https://bugzilla.gnome.org/show_bug.cgi?id=668483
This commit is contained in:
Holger Kaelberer
Tim-Philipp Müller
parent
76c0881549
commit
9d1b331004
1 changed files with 381 additions and 0 deletions
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@ -1037,6 +1037,386 @@ GST_START_TEST (test_overlay_composition_premultiplied_alpha)
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GST_END_TEST;
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GST_START_TEST (test_overlay_composition_global_alpha)
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{
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GstVideoOverlayRectangle *rect1;
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GstBuffer *pix1, *pix2, *pix3, *pix4, *pix5;
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guint8 *data2, *data4, *data5;
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guint w, h, stride, stride3, w4, h4, stride4, stride5;
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guint seq1, seq2;
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gfloat ga1, ga2;
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GstVideoOverlayFormatFlags flags1;
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pix1 = gst_buffer_new_and_alloc (200 * sizeof (guint32) * 50);
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memset (GST_BUFFER_DATA (pix1), 0x80, GST_BUFFER_SIZE (pix1));
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rect1 = gst_video_overlay_rectangle_new_argb (pix1, 200, 50, 200 * 4,
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600, 50, 300, 50, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
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gst_buffer_unref (pix1);
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/* same flags, unscaled, should be the same buffer */
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
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fail_unless (pix1 == pix2);
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/* same flags, but scaled */
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pix3 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride3,
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GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
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fail_if (pix3 == pix1 || pix3 == pix2);
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/* get unscaled premultiplied data, new cached rectangle should be created */
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pix4 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w4, &h4,
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&stride4, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
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fail_if (pix4 == pix2 || pix4 == pix3);
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fail_unless_equals_int (stride, stride4);
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fail_unless_equals_int (w, w4);
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fail_unless_equals_int (h, h4);
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fail_unless_equals_int (GST_BUFFER_SIZE (pix2), GST_BUFFER_SIZE (pix4));
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data4 = GST_BUFFER_DATA (pix4);
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fail_if (memcmp (data4, GST_BUFFER_DATA (pix1), GST_BUFFER_SIZE (pix1)) == 0);
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/* make sure it actually did what we expected it to do (input=0x80808080) */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data4[0], 0x40);
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fail_unless_equals_int (data4[1], 0x40);
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fail_unless_equals_int (data4[2], 0x40);
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fail_unless_equals_int (data4[3], 0x80);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data4[0], 0x80);
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fail_unless_equals_int (data4[1], 0x40);
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fail_unless_equals_int (data4[2], 0x40);
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fail_unless_equals_int (data4[3], 0x40);
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#endif
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/* now premultiplied and scaled, again a new cached rectangle should be cached */
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pix5 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride5,
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GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
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fail_if (pix5 == pix2 || pix5 == pix3 || pix5 == pix4);
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/* stride and size should be equal to the first scaled rect */
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fail_unless_equals_int (stride5, stride3);
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fail_unless_equals_int (GST_BUFFER_SIZE (pix3), GST_BUFFER_SIZE (pix3));
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data5 = GST_BUFFER_DATA (pix5);
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/* data should be different (premutliplied) though */
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fail_if (memcmp (data5, GST_BUFFER_DATA (pix3), GST_BUFFER_SIZE (pix3)) == 0);
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/* make sure it actually did what we expected it to do (input=0x80808080) */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data5[0], 0x40);
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fail_unless_equals_int (data5[1], 0x40);
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fail_unless_equals_int (data5[2], 0x40);
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fail_unless_equals_int (data5[3], 0x80);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data5[0], 0x80);
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fail_unless_equals_int (data5[1], 0x40);
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fail_unless_equals_int (data5[2], 0x40);
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fail_unless_equals_int (data5[3], 0x40);
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#endif
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/* global_alpha should initially be 1.0 */
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ga1 = gst_video_overlay_rectangle_get_global_alpha (rect1);
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fail_unless_equals_float (ga1, 1.0);
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/* now set global_alpha */
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seq1 = gst_video_overlay_rectangle_get_seqnum (rect1);
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gst_video_overlay_rectangle_set_global_alpha (rect1, 0.5);
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ga2 = gst_video_overlay_rectangle_get_global_alpha (rect1);
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fail_unless_equals_float (ga2, 0.5);
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/* seqnum should have changed */
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seq2 = gst_video_overlay_rectangle_get_seqnum (rect1);
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fail_unless (seq1 < seq2);
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/* internal flags should have been set */
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flags1 = gst_video_overlay_rectangle_get_flags (rect1);
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fail_unless_equals_int (flags1, GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
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/* request unscaled pixel-data, global-alpha not applied */
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
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/* this should just return the same buffer */
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fail_unless (pix2 == pix1);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
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GST_BUFFER_SIZE (pix1)) == 0);
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/* make sure we got the initial data (input=0x80808080) */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#endif
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/* unscaled pixel-data, global-alpha applied */
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
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/* this should be the same buffer with on-the-fly modified alpha-channel */
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fail_unless (pix2 == pix1);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
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GST_BUFFER_SIZE (pix1)) == 0);
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/* make sure we got the initial data with adjusted alpha-channel */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x40);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x40);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#endif
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/* adjust global_alpha once more */
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gst_video_overlay_rectangle_set_global_alpha (rect1, 0.25);
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ga2 = gst_video_overlay_rectangle_get_global_alpha (rect1);
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fail_unless_equals_float (ga2, 0.25);
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/* and again request unscaled pixel-data, global-alpha applied */
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
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fail_unless (pix2 == pix1);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
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GST_BUFFER_SIZE (pix1)) == 0);
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/* make sure we got the initial data with adjusted alpha-channel */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x20);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x20);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#endif
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/* again: unscaled pixel-data, global-alpha not applied,
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* this should revert alpha-channel to initial values */
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
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fail_unless (pix2 == pix1);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix1),
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GST_BUFFER_SIZE (pix1)) == 0);
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/* make sure we got the initial data (input=0x80808080) */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#endif
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/* now scaled, global-alpha not applied */
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pix2 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride,
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GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
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/* this should just return the rect/buffer, that was cached for these
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* scaling dimensions */
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fail_unless (pix2 == pix3);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix3),
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GST_BUFFER_SIZE (pix3)) == 0);
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/* make sure we got the initial data (input=0x80808080) */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#endif
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/* scaled, global-alpha (0.25) applied */
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pix2 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride,
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GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
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/* this should just return the rect/buffer, that was cached for these
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* scaling dimensions with modified alpha channel */
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fail_unless (pix2 == pix3);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix3),
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GST_BUFFER_SIZE (pix3)) == 0);
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/* make sure we got the data we expect for global-alpha=0.25 */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x20);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x20);
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fail_unless_equals_int (data2[1], 0x80);
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fail_unless_equals_int (data2[2], 0x80);
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fail_unless_equals_int (data2[3], 0x80);
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#endif
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/* now unscaled premultiplied data, global-alpha not applied,
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* is this really a valid use case?*/
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA |
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GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
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/* this should just return the rect/buffer, that was cached for the
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* premultiplied data */
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fail_unless (pix2 == pix4);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix4),
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GST_BUFFER_SIZE (pix4)) == 0);
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/* make sure we got what we expected */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x40);
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fail_unless_equals_int (data2[1], 0x40);
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fail_unless_equals_int (data2[2], 0x40);
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fail_unless_equals_int (data2[3], 0x80);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x80);
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fail_unless_equals_int (data2[1], 0x40);
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fail_unless_equals_int (data2[2], 0x40);
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fail_unless_equals_int (data2[3], 0x40);
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#endif
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/* unscaled premultiplied data, global-alpha (0.25) applied */
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
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/* this should just return the rect/buffer, that was cached for the
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* premultiplied data */
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fail_unless (pix2 == pix4);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix4),
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GST_BUFFER_SIZE (pix4)) == 0);
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/* make sure we got what we expected:
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* (0x40 / (0x80/0xFF) * (0x20/0xFF) = 0x10
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* NOTE: unless we are using round() for the premultiplied case
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* in gst_video_overlay_rectangle_apply_global_alpha() we get rounding
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* error, i.e. 0x0F here */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x0F);
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fail_unless_equals_int (data2[1], 0x0F);
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fail_unless_equals_int (data2[2], 0x0F);
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fail_unless_equals_int (data2[3], 0x20);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x20);
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fail_unless_equals_int (data2[1], 0x0F);
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fail_unless_equals_int (data2[2], 0x0F);
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fail_unless_equals_int (data2[3], 0x0F);
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#endif
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/* set global_alpha once more */
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gst_video_overlay_rectangle_set_global_alpha (rect1, 0.75);
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/* and verify that also premultiplied data is adjusted
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* correspondingly (though with increasing rounding errors) */
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pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h,
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&stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
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/* this should just return the rect/buffer, that was cached for the
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* premultiplied data */
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fail_unless (pix2 == pix4);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix4),
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GST_BUFFER_SIZE (pix4)) == 0);
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/* make sure we got what we expected:
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* (0x0F / (0x20/0xFF) * (0x60/0xFF) = 0x2D
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* NOTE: using floats everywhere we would get 0x30
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* here we will actually end up with 0x2C */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x2C);
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fail_unless_equals_int (data2[1], 0x2C);
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fail_unless_equals_int (data2[2], 0x2C);
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fail_unless_equals_int (data2[3], 0x60);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x60);
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fail_unless_equals_int (data2[1], 0x2C);
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fail_unless_equals_int (data2[2], 0x2C);
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fail_unless_equals_int (data2[3], 0x2C);
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#endif
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/* now scaled and premultiplied data, global-alpha not applied,
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* is this really a valid use case?*/
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pix2 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride,
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GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA |
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GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
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/* this should just return the rect/buffer, that was cached for the
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* first premultiplied+scaled rect*/
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fail_unless (pix2 == pix5);
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fail_unless (stride == stride5);
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data2 = GST_BUFFER_DATA (pix2);
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fail_unless (memcmp (data2, GST_BUFFER_DATA (pix5),
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GST_BUFFER_SIZE (pix5)) == 0);
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/* make sure we got what we expected */
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/* B - G - R - A */
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fail_unless_equals_int (data2[0], 0x40);
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fail_unless_equals_int (data2[1], 0x40);
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fail_unless_equals_int (data2[2], 0x40);
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fail_unless_equals_int (data2[3], 0x80);
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#else
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/* A - R - G - B */
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fail_unless_equals_int (data2[0], 0x80);
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||||
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)
|
||||
{
|
||||
|
|
@ -1055,6 +1435,7 @@ 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;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue