/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
*/
+/** @file test/image_test.cc
+ * @brief Tests of the Image class.
+ *
+ * @see test/make_black_test.cc, test/pixel_formats_test.cc
+ */
+
#include <boost/test/unit_test.hpp>
#include <Magick++.h>
#include "lib/image.h"
#include "lib/scaler.h"
using std::string;
+using std::list;
using std::cout;
using boost::shared_ptr;
boost::shared_ptr<Image> image (new Image (PIX_FMT_RGB24, size, true));
+#ifdef DCPOMATIC_IMAGE_MAGICK
using namespace MagickCore;
+#endif
uint8_t* p = image->data()[0];
for (int y = 0; y < size.height; ++y) {
uint8_t* q = p;
for (int x = 0; x < size.width; ++x) {
Magick::Color c = magick_image.pixelColor (x, y);
+#ifdef DCPOMATIC_IMAGE_MAGICK
*q++ = c.redQuantum() * 255 / QuantumRange;
*q++ = c.greenQuantum() * 255 / QuantumRange;
*q++ = c.blueQuantum() * 255 / QuantumRange;
+#else
+ *q++ = c.redQuantum() * 255 / MaxRGB;
+ *q++ = c.greenQuantum() * 255 / MaxRGB;
+ *q++ = c.blueQuantum() * 255 / MaxRGB;
+#endif
}
p += image->stride()[0];
}
void
write_file (shared_ptr<Image> image, string file)
{
+#ifdef DCPOMATIC_IMAGE_MAGICK
using namespace MagickCore;
+#endif
Magick::Image magick_image (Magick::Geometry (image->size().width, image->size().height), Magick::Color (0, 0, 0));
uint8_t*p = image->data()[0];
for (int y = 0; y < image->size().height; ++y) {
uint8_t* q = p;
for (int x = 0; x < image->size().width; ++x) {
+#ifdef DCPOMATIC_IMAGE_MAGICK
Magick::Color c (q[0] * QuantumRange / 256, q[1] * QuantumRange / 256, q[2] * QuantumRange / 256);
+#else
+ Magick::Color c (q[0] * MaxRGB / 256, q[1] * MaxRGB / 256, q[2] * MaxRGB / 256);
+#endif
magick_image.pixelColor (x, y, c);
q += 3;
}
crop_scale_window_single (AV_PIX_FMT_RGB24, dcp::Size (1000, 800), Crop (0, 0, 0, 0), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
crop_scale_window_single (AV_PIX_FMT_RGB24, dcp::Size (1000, 800), Crop (55, 0, 1, 9), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
}
+
+/** Test Image::alpha_blend */
+BOOST_AUTO_TEST_CASE (alpha_blend_test)
+{
+ int const stride = 48 * 4;
+
+ shared_ptr<Image> A (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 48), false));
+ A->make_black ();
+ uint8_t* a = A->data()[0];
+
+ for (int y = 0; y < 48; ++y) {
+ uint8_t* p = a + y * stride;
+ for (int x = 0; x < 16; ++x) {
+ p[x * 4] = 255;
+ p[(x + 16) * 4 + 1] = 255;
+ p[(x + 32) * 4 + 2] = 255;
+ }
+ }
+
+ shared_ptr<Image> B (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 48), true));
+ B->make_transparent ();
+ uint8_t* b = B->data()[0];
+
+ for (int y = 32; y < 48; ++y) {
+ uint8_t* p = b + y * stride;
+ for (int x = 0; x < 48; ++x) {
+ p[x * 4] = 255;
+ p[x * 4 + 1] = 255;
+ p[x * 4 + 2] = 255;
+ p[x * 4 + 3] = 255;
+ }
+ }
+
+ A->alpha_blend (B, Position<int> (0, 0));
+
+ for (int y = 0; y < 32; ++y) {
+ uint8_t* p = a + y * stride;
+ for (int x = 0; x < 16; ++x) {
+ BOOST_CHECK_EQUAL (p[x * 4], 255);
+ BOOST_CHECK_EQUAL (p[(x + 16) * 4 + 1], 255);
+ BOOST_CHECK_EQUAL (p[(x + 32) * 4 + 2], 255);
+ }
+ }
+
+ for (int y = 32; y < 48; ++y) {
+ uint8_t* p = a + y * stride;
+ for (int x = 0; x < 48; ++x) {
+ BOOST_CHECK_EQUAL (p[x * 4], 255);
+ BOOST_CHECK_EQUAL (p[x * 4 + 1], 255);
+ BOOST_CHECK_EQUAL (p[x * 4 + 2], 255);
+ BOOST_CHECK_EQUAL (p[x * 4 + 3], 255);
+ }
+ }
+}
+
+/** Test merge (list<PositionImage>) with a single image */
+BOOST_AUTO_TEST_CASE (merge_test1)
+{
+ int const stride = 48 * 4;
+
+ shared_ptr<Image> A (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 48), false));
+ A->make_transparent ();
+ uint8_t* a = A->data()[0];
+
+ for (int y = 0; y < 48; ++y) {
+ uint8_t* p = a + y * stride;
+ for (int x = 0; x < 16; ++x) {
+ /* red */
+ p[x * 4] = 255;
+ /* opaque */
+ p[x * 4 + 3] = 255;
+ }
+ }
+
+ list<PositionImage> all;
+ all.push_back (PositionImage (A, Position<int> (0, 0)));
+ PositionImage merged = merge (all);
+
+ BOOST_CHECK (merged.position == Position<int> (0, 0));
+ BOOST_CHECK_EQUAL (memcmp (merged.image->data()[0], A->data()[0], stride * 48), 0);
+}
+
+/** Test merge (list<PositionImage>) with two images */
+BOOST_AUTO_TEST_CASE (merge_test2)
+{
+ shared_ptr<Image> A (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 1), false));
+ A->make_transparent ();
+ uint8_t* a = A->data()[0];
+ for (int x = 0; x < 16; ++x) {
+ /* red */
+ a[x * 4] = 255;
+ /* opaque */
+ a[x * 4 + 3] = 255;
+ }
+
+ shared_ptr<Image> B (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 1), false));
+ B->make_transparent ();
+ uint8_t* b = B->data()[0];
+ for (int x = 0; x < 16; ++x) {
+ /* blue */
+ b[(x + 32) * 4 + 2] = 255;
+ /* opaque */
+ b[(x + 32) * 4 + 3] = 255;
+ }
+
+ list<PositionImage> all;
+ all.push_back (PositionImage (A, Position<int> (0, 0)));
+ all.push_back (PositionImage (B, Position<int> (0, 0)));
+ PositionImage merged = merge (all);
+
+ BOOST_CHECK (merged.position == Position<int> (0, 0));
+
+ uint8_t* m = merged.image->data()[0];
+
+ for (int x = 0; x < 16; ++x) {
+ BOOST_CHECK_EQUAL (m[x * 4], 255);
+ BOOST_CHECK_EQUAL (m[x * 4 + 3], 255);
+ BOOST_CHECK_EQUAL (m[(x + 16) * 4 + 3], 0);
+ BOOST_CHECK_EQUAL (m[(x + 32) * 4 + 2], 255);
+ BOOST_CHECK_EQUAL (m[(x + 32) * 4 + 3], 255);
+ }
+}