From: Tim-Philipp Müller Date: Wed, 14 Mar 2012 17:59:31 +0000 (+0000) Subject: tests: add unit test for premultiplied alpha handling of video overlay rectangles X-Git-Tag: RELEASE-0.11.3~1^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=87a9e5634e3c44a02bb1dad9233a2cbd2c4f5311;p=platform%2Fupstream%2Fgst-plugins-base.git tests: add unit test for premultiplied alpha handling of video overlay rectangles https://bugzilla.gnome.org/show_bug.cgi?id=668483 --- diff --git a/tests/check/libs/video.c b/tests/check/libs/video.c index 3e13341..bc24451 100644 --- a/tests/check/libs/video.c +++ b/tests/check/libs/video.c @@ -3,6 +3,7 @@ * Copyright (C) <2003> David A. Schleef * Copyright (C) <2006> Jan Schmidt * Copyright (C) <2008,2011> Tim-Philipp Müller + * Copyright (C) <2012> Collabora Ltd. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -924,6 +925,118 @@ GST_START_TEST (test_overlay_composition) GST_END_TEST; +GST_START_TEST (test_overlay_composition_premultiplied_alpha) +{ + GstVideoOverlayRectangle *rect1; + GstBuffer *pix1, *pix2, *pix3, *pix4, *pix5; + GstBuffer *pix6, *pix7, *pix8, *pix9, *pix10; + guint8 *data5, *data7; + guint w, h, stride, w2, h2, stride2; + + 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, &stride, + GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE); + fail_if (pix3 == pix1 || pix3 == pix2); + + /* same again, should hopefully get the same (cached) buffer as before */ + pix4 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride, + GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE); + fail_unless (pix4 == pix3); + + /* just to update the vars */ + pix2 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w, &h, + &stride, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE); + + /* now, let's try to get premultiplied alpha from the unpremultiplied input */ + pix5 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w2, &h2, + &stride2, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA); + fail_if (pix5 == pix1 || pix5 == pix2 || pix5 == pix3); + fail_unless_equals_int (stride, stride2); + fail_unless_equals_int (w, w2); + fail_unless_equals_int (h, h2); + fail_unless_equals_int (GST_BUFFER_SIZE (pix2), GST_BUFFER_SIZE (pix5)); + data5 = GST_BUFFER_DATA (pix5); + fail_if (memcmp (data5, GST_BUFFER_DATA (pix2), GST_BUFFER_SIZE (pix5)) == 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], 0x40); + fail_unless_equals_int (data5[1], 0x40); + fail_unless_equals_int (data5[2], 0x40); + fail_unless_equals_int (data5[3], 0x80); +#endif + + /* same again, now we should be getting back the same buffer as before, + * as it should have been cached */ + pix6 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w2, &h2, + &stride2, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA); + fail_unless (pix6 == pix5); + + /* just to update the stride var */ + pix3 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride, + GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE); + fail_unless (pix3 == pix4); + + /* now try to get scaled premultiplied alpha from unpremultiplied input */ + pix7 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride2, + GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA); + fail_if (pix7 == pix1 || pix7 == pix2 || pix7 == pix3 || pix7 == pix5); + fail_unless_equals_int (stride, stride2); + + data7 = GST_BUFFER_DATA (pix7); + /* make sure it actually did what we expected it to do (input=0x80808080) + * hoping that the scaling didn't mess up our values */ +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + /* B - G - R - A */ + fail_unless_equals_int (data7[0], 0x40); + fail_unless_equals_int (data7[1], 0x40); + fail_unless_equals_int (data7[2], 0x40); + fail_unless_equals_int (data7[3], 0x80); +#else + /* A - R - G - B */ + fail_unless_equals_int (data7[0], 0x40); + fail_unless_equals_int (data7[1], 0x40); + fail_unless_equals_int (data7[2], 0x40); + fail_unless_equals_int (data7[3], 0x80); +#endif + + /* and the same again, it should be cached now */ + pix8 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride2, + GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA); + fail_unless (pix8 == pix7); + + /* make sure other cached stuff is still there */ + pix9 = gst_video_overlay_rectangle_get_pixels_argb (rect1, &stride, + GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE); + fail_unless (pix9 == pix3); + pix10 = gst_video_overlay_rectangle_get_pixels_unscaled_argb (rect1, &w2, &h2, + &stride2, GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA); + fail_unless (pix10 == pix5); + + gst_video_overlay_rectangle_unref (rect1); +} + +GST_END_TEST; + static Suite * video_suite (void) { @@ -941,6 +1054,7 @@ video_suite (void) tcase_add_test (tc_chain, test_convert_frame_async); 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); return s; }