mirror of
https://github.com/python-pillow/Pillow.git
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Merge pull request #994 from homm/add-transpose
Add transpose and cache aware rotation
This commit is contained in:
wiredfool
commit
cfbe49f124
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@ -150,6 +150,7 @@ FLIP_TOP_BOTTOM = 1
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ROTATE_90 = 2
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ROTATE_180 = 3
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ROTATE_270 = 4
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TRANSPOSE = 5
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# transforms
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AFFINE = 0
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@ -1920,13 +1921,13 @@ class Image:
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:param method: One of :py:attr:`PIL.Image.FLIP_LEFT_RIGHT`,
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:py:attr:`PIL.Image.FLIP_TOP_BOTTOM`, :py:attr:`PIL.Image.ROTATE_90`,
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:py:attr:`PIL.Image.ROTATE_180`, or :py:attr:`PIL.Image.ROTATE_270`.
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:py:attr:`PIL.Image.ROTATE_180`, :py:attr:`PIL.Image.ROTATE_270` or
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:py:attr:`PIL.Image.TRANSPOSE`.
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:returns: Returns a flipped or rotated copy of this image.
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"""
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self.load()
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im = self.im.transpose(method)
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return self._new(im)
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return self._new(self.im.transpose(method))
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def effect_spread(self, distance):
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"""
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@ -1,30 +1,114 @@
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from helper import unittest, PillowTestCase, hopper
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from PIL import Image
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FLIP_LEFT_RIGHT = Image.FLIP_LEFT_RIGHT
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FLIP_TOP_BOTTOM = Image.FLIP_TOP_BOTTOM
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ROTATE_90 = Image.ROTATE_90
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ROTATE_180 = Image.ROTATE_180
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ROTATE_270 = Image.ROTATE_270
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from PIL.Image import (FLIP_LEFT_RIGHT, FLIP_TOP_BOTTOM, ROTATE_90, ROTATE_180,
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ROTATE_270, TRANSPOSE)
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class TestImageTranspose(PillowTestCase):
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def test_sanity(self):
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hopper = {
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'L': hopper('L').crop((0, 0, 121, 127)).copy(),
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'RGB': hopper('RGB').crop((0, 0, 121, 127)).copy(),
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}
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im = hopper()
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def test_flip_left_right(self):
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def transpose(mode):
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im = self.hopper[mode]
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out = im.transpose(FLIP_LEFT_RIGHT)
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self.assertEqual(out.mode, mode)
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self.assertEqual(out.size, im.size)
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im.transpose(FLIP_LEFT_RIGHT)
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im.transpose(FLIP_TOP_BOTTOM)
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x, y = im.size
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self.assertEqual(im.getpixel((1, 1)), out.getpixel((x-2, 1)))
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self.assertEqual(im.getpixel((x-2, 1)), out.getpixel((1, 1)))
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self.assertEqual(im.getpixel((1, y-2)), out.getpixel((x-2, y-2)))
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self.assertEqual(im.getpixel((x-2, y-2)), out.getpixel((1, y-2)))
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im.transpose(ROTATE_90)
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im.transpose(ROTATE_180)
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im.transpose(ROTATE_270)
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for mode in ("L", "RGB"):
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transpose(mode)
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def test_flip_top_bottom(self):
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def transpose(mode):
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im = self.hopper[mode]
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out = im.transpose(FLIP_TOP_BOTTOM)
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self.assertEqual(out.mode, mode)
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self.assertEqual(out.size, im.size)
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x, y = im.size
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self.assertEqual(im.getpixel((1, 1)), out.getpixel((1, y-2)))
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self.assertEqual(im.getpixel((x-2, 1)), out.getpixel((x-2, y-2)))
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self.assertEqual(im.getpixel((1, y-2)), out.getpixel((1, 1)))
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self.assertEqual(im.getpixel((x-2, y-2)), out.getpixel((x-2, 1)))
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for mode in ("L", "RGB"):
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transpose(mode)
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def test_rotate_90(self):
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def transpose(mode):
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im = self.hopper[mode]
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out = im.transpose(ROTATE_90)
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self.assertEqual(out.mode, mode)
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self.assertEqual(out.size, im.size[::-1])
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x, y = im.size
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self.assertEqual(im.getpixel((1, 1)), out.getpixel((1, x-2)))
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self.assertEqual(im.getpixel((x-2, 1)), out.getpixel((1, 1)))
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self.assertEqual(im.getpixel((1, y-2)), out.getpixel((y-2, x-2)))
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self.assertEqual(im.getpixel((x-2, y-2)), out.getpixel((y-2, 1)))
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for mode in ("L", "RGB"):
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transpose(mode)
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def test_rotate_180(self):
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def transpose(mode):
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im = self.hopper[mode]
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out = im.transpose(ROTATE_180)
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self.assertEqual(out.mode, mode)
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self.assertEqual(out.size, im.size)
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x, y = im.size
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self.assertEqual(im.getpixel((1, 1)), out.getpixel((x-2, y-2)))
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self.assertEqual(im.getpixel((x-2, 1)), out.getpixel((1, y-2)))
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self.assertEqual(im.getpixel((1, y-2)), out.getpixel((x-2, 1)))
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self.assertEqual(im.getpixel((x-2, y-2)), out.getpixel((1, 1)))
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for mode in ("L", "RGB"):
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transpose(mode)
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def test_rotate_270(self):
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def transpose(mode):
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im = self.hopper[mode]
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out = im.transpose(ROTATE_270)
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self.assertEqual(out.mode, mode)
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self.assertEqual(out.size, im.size[::-1])
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x, y = im.size
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self.assertEqual(im.getpixel((1, 1)), out.getpixel((y-2, 1)))
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self.assertEqual(im.getpixel((x-2, 1)), out.getpixel((y-2, x-2)))
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self.assertEqual(im.getpixel((1, y-2)), out.getpixel((1, 1)))
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self.assertEqual(im.getpixel((x-2, y-2)), out.getpixel((1, x-2)))
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for mode in ("L", "RGB"):
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transpose(mode)
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def test_transpose(self):
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def transpose(mode):
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im = self.hopper[mode]
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out = im.transpose(TRANSPOSE)
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self.assertEqual(out.mode, mode)
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self.assertEqual(out.size, im.size[::-1])
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x, y = im.size
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self.assertEqual(im.getpixel((1, 1)), out.getpixel((1, 1)))
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self.assertEqual(im.getpixel((x-2, 1)), out.getpixel((1, x-2)))
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self.assertEqual(im.getpixel((1, y-2)), out.getpixel((y-2, 1)))
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self.assertEqual(im.getpixel((x-2, y-2)), out.getpixel((y-2, x-2)))
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for mode in ("L", "RGB"):
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transpose(mode)
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def test_roundtrip(self):
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im = hopper()
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im = self.hopper['L']
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def transpose(first, second):
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return im.transpose(first).transpose(second)
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@ -33,12 +117,13 @@ class TestImageTranspose(PillowTestCase):
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im, transpose(FLIP_LEFT_RIGHT, FLIP_LEFT_RIGHT))
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self.assert_image_equal(
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im, transpose(FLIP_TOP_BOTTOM, FLIP_TOP_BOTTOM))
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self.assert_image_equal(im, transpose(ROTATE_90, ROTATE_270))
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self.assert_image_equal(im, transpose(ROTATE_180, ROTATE_180))
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self.assert_image_equal(
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im.transpose(TRANSPOSE), transpose(ROTATE_90, FLIP_TOP_BOTTOM))
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self.assert_image_equal(
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im.transpose(TRANSPOSE), transpose(ROTATE_270, FLIP_LEFT_RIGHT))
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if __name__ == '__main__':
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unittest.main()
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# End of file
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@ -1750,6 +1750,7 @@ _transpose(ImagingObject* self, PyObject* args)
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break;
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case 2: /* rotate 90 */
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case 4: /* rotate 270 */
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case 5: /* transpose */
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imOut = ImagingNew(imIn->mode, imIn->ysize, imIn->xsize);
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break;
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default:
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@ -1774,6 +1775,9 @@ _transpose(ImagingObject* self, PyObject* args)
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case 4:
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(void) ImagingRotate270(imOut, imIn);
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break;
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case 5:
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(void) ImagingTranspose(imOut, imIn);
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break;
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}
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return PyImagingNew(imOut);
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@ -30,11 +30,18 @@
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/* Undef if you don't need resampling filters */
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#define WITH_FILTERS
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/* For large images rotation is an inefficient operation in terms of CPU cache.
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One row in the source image affects each column in destination.
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Rotating in chunks that fit in the cache can speed up rotation
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8x on a modern CPU. A chunk size of 128 requires only 65k and is large enough
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that the overhead from the extra loops are not apparent. */
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#define ROTATE_CHUNK 128
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#define COORD(v) ((v) < 0.0 ? -1 : ((int)(v)))
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#define FLOOR(v) ((v) < 0.0 ? ((int)floor(v)) : ((int)(v)))
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/* -------------------------------------------------------------------- */
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/* Transpose operations */
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/* Transpose operations */
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Imaging
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ImagingFlipLeftRight(Imaging imOut, Imaging imIn)
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@ -43,25 +50,25 @@ ImagingFlipLeftRight(Imaging imOut, Imaging imIn)
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int x, y, xr;
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if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
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return (Imaging) ImagingError_ModeError();
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return (Imaging) ImagingError_ModeError();
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if (imIn->xsize != imOut->xsize || imIn->ysize != imOut->ysize)
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return (Imaging) ImagingError_Mismatch();
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return (Imaging) ImagingError_Mismatch();
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ImagingCopyInfo(imOut, imIn);
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#define FLIP_HORIZ(image)\
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#define FLIP_HORIZ(image)\
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for (y = 0; y < imIn->ysize; y++) {\
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xr = imIn->xsize-1;\
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for (x = 0; x < imIn->xsize; x++, xr--)\
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imOut->image[y][x] = imIn->image[y][xr];\
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xr = imIn->xsize-1;\
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for (x = 0; x < imIn->xsize; x++, xr--)\
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imOut->image[y][x] = imIn->image[y][xr];\
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}
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ImagingSectionEnter(&cookie);
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if (imIn->image8)
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FLIP_HORIZ(image8)
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FLIP_HORIZ(image8)
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else
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FLIP_HORIZ(image32)
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FLIP_HORIZ(image32)
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ImagingSectionLeave(&cookie);
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@ -76,9 +83,9 @@ ImagingFlipTopBottom(Imaging imOut, Imaging imIn)
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int y, yr;
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if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
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return (Imaging) ImagingError_ModeError();
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return (Imaging) ImagingError_ModeError();
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if (imIn->xsize != imOut->xsize || imIn->ysize != imOut->ysize)
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return (Imaging) ImagingError_Mismatch();
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return (Imaging) ImagingError_Mismatch();
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ImagingCopyInfo(imOut, imIn);
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@ -86,7 +93,7 @@ ImagingFlipTopBottom(Imaging imOut, Imaging imIn)
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yr = imIn->ysize-1;
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for (y = 0; y < imIn->ysize; y++, yr--)
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memcpy(imOut->image[yr], imIn->image[y], imIn->linesize);
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memcpy(imOut->image[yr], imIn->image[y], imIn->linesize);
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ImagingSectionLeave(&cookie);
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@ -98,28 +105,35 @@ Imaging
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ImagingRotate90(Imaging imOut, Imaging imIn)
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{
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ImagingSectionCookie cookie;
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int x, y, xr;
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int x, y, xx, yy, xr, xxsize, yysize;
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if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
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return (Imaging) ImagingError_ModeError();
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return (Imaging) ImagingError_ModeError();
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if (imIn->xsize != imOut->ysize || imIn->ysize != imOut->xsize)
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return (Imaging) ImagingError_Mismatch();
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return (Imaging) ImagingError_Mismatch();
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ImagingCopyInfo(imOut, imIn);
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#define ROTATE_90(image)\
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for (y = 0; y < imIn->ysize; y++) {\
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xr = imIn->xsize-1;\
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for (x = 0; x < imIn->xsize; x++, xr--)\
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imOut->image[xr][y] = imIn->image[y][x];\
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#define ROTATE_90(image) \
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for (y = 0; y < imIn->ysize; y += ROTATE_CHUNK) { \
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for (x = 0; x < imIn->xsize; x += ROTATE_CHUNK) { \
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yysize = y + ROTATE_CHUNK < imIn->ysize ? y + ROTATE_CHUNK : imIn->ysize; \
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xxsize = x + ROTATE_CHUNK < imIn->xsize ? x + ROTATE_CHUNK : imIn->xsize; \
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for (yy = y; yy < yysize; yy++) { \
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xr = imIn->xsize - 1 - x; \
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for (xx = x; xx < xxsize; xx++, xr--) { \
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imOut->image[xr][yy] = imIn->image[yy][xx]; \
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} \
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} \
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} \
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}
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ImagingSectionEnter(&cookie);
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if (imIn->image8)
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ROTATE_90(image8)
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ROTATE_90(image8)
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else
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ROTATE_90(image32)
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ROTATE_90(image32)
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ImagingSectionLeave(&cookie);
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@ -127,6 +141,43 @@ ImagingRotate90(Imaging imOut, Imaging imIn)
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}
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Imaging
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ImagingTranspose(Imaging imOut, Imaging imIn)
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{
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ImagingSectionCookie cookie;
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int x, y, xx, yy, xxsize, yysize;
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if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
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return (Imaging) ImagingError_ModeError();
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if (imIn->xsize != imOut->ysize || imIn->ysize != imOut->xsize)
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return (Imaging) ImagingError_Mismatch();
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#define TRANSPOSE(image) \
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for (y = 0; y < imIn->ysize; y += ROTATE_CHUNK) { \
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for (x = 0; x < imIn->xsize; x += ROTATE_CHUNK) { \
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yysize = y + ROTATE_CHUNK < imIn->ysize ? y + ROTATE_CHUNK : imIn->ysize; \
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xxsize = x + ROTATE_CHUNK < imIn->xsize ? x + ROTATE_CHUNK : imIn->xsize; \
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for (yy = y; yy < yysize; yy++) { \
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for (xx = x; xx < xxsize; xx++) { \
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imOut->image[xx][yy] = imIn->image[yy][xx]; \
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} \
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} \
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} \
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}
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ImagingCopyInfo(imOut, imIn);
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ImagingSectionEnter(&cookie);
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if (imIn->image8)
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TRANSPOSE(image8)
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else
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TRANSPOSE(image32)
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ImagingSectionLeave(&cookie);
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return imOut;
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}
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Imaging
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ImagingRotate180(Imaging imOut, Imaging imIn)
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{
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@ -134,27 +185,27 @@ ImagingRotate180(Imaging imOut, Imaging imIn)
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int x, y, xr, yr;
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if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
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return (Imaging) ImagingError_ModeError();
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return (Imaging) ImagingError_ModeError();
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if (imIn->xsize != imOut->xsize || imIn->ysize != imOut->ysize)
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return (Imaging) ImagingError_Mismatch();
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return (Imaging) ImagingError_Mismatch();
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ImagingCopyInfo(imOut, imIn);
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yr = imIn->ysize-1;
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#define ROTATE_180(image)\
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#define ROTATE_180(image)\
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for (y = 0; y < imIn->ysize; y++, yr--) {\
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xr = imIn->xsize-1;\
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for (x = 0; x < imIn->xsize; x++, xr--)\
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imOut->image[y][x] = imIn->image[yr][xr];\
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xr = imIn->xsize-1;\
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for (x = 0; x < imIn->xsize; x++, xr--)\
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imOut->image[y][x] = imIn->image[yr][xr];\
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}
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ImagingSectionEnter(&cookie);
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if (imIn->image8)
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ROTATE_180(image8)
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ROTATE_180(image8)
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else
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ROTATE_180(image32)
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ROTATE_180(image32)
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ImagingSectionLeave(&cookie);
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@ -166,28 +217,35 @@ Imaging
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ImagingRotate270(Imaging imOut, Imaging imIn)
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{
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ImagingSectionCookie cookie;
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int x, y, yr;
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int x, y, xx, yy, yr, xxsize, yysize;
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if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
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return (Imaging) ImagingError_ModeError();
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return (Imaging) ImagingError_ModeError();
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if (imIn->xsize != imOut->ysize || imIn->ysize != imOut->xsize)
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return (Imaging) ImagingError_Mismatch();
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return (Imaging) ImagingError_Mismatch();
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ImagingCopyInfo(imOut, imIn);
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yr = imIn->ysize - 1;
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#define ROTATE_270(image)\
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for (y = 0; y < imIn->ysize; y++, yr--)\
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for (x = 0; x < imIn->xsize; x++)\
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imOut->image[x][y] = imIn->image[yr][x];
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#define ROTATE_270(image) \
|
||||
for (y = 0; y < imIn->ysize; y += ROTATE_CHUNK) { \
|
||||
for (x = 0; x < imIn->xsize; x += ROTATE_CHUNK) { \
|
||||
yysize = y + ROTATE_CHUNK < imIn->ysize ? y + ROTATE_CHUNK : imIn->ysize; \
|
||||
xxsize = x + ROTATE_CHUNK < imIn->xsize ? x + ROTATE_CHUNK : imIn->xsize; \
|
||||
yr = imIn->ysize - 1 - y; \
|
||||
for (yy = y; yy < yysize; yy++, yr--) { \
|
||||
for (xx = x; xx < xxsize; xx++) { \
|
||||
imOut->image[xx][yr] = imIn->image[yy][xx]; \
|
||||
} \
|
||||
} \
|
||||
} \
|
||||
}
|
||||
|
||||
ImagingSectionEnter(&cookie);
|
||||
|
||||
if (imIn->image8)
|
||||
ROTATE_270(image8)
|
||||
ROTATE_270(image8)
|
||||
else
|
||||
ROTATE_270(image32)
|
||||
ROTATE_270(image32)
|
||||
|
||||
ImagingSectionLeave(&cookie);
|
||||
|
||||
|
|
@ -196,7 +254,7 @@ ImagingRotate270(Imaging imOut, Imaging imIn)
|
|||
|
||||
|
||||
/* -------------------------------------------------------------------- */
|
||||
/* Transforms */
|
||||
/* Transforms */
|
||||
|
||||
/* transform primitives (ImagingTransformMap) */
|
||||
|
||||
|
|
@ -597,7 +655,7 @@ ImagingTransform(
|
|||
double xx, yy;
|
||||
|
||||
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
|
||||
return (Imaging) ImagingError_ModeError();
|
||||
return (Imaging) ImagingError_ModeError();
|
||||
|
||||
ImagingCopyInfo(imOut, imIn);
|
||||
|
||||
|
|
@ -613,15 +671,15 @@ ImagingTransform(
|
|||
y1 = imOut->ysize;
|
||||
|
||||
for (y = y0; y < y1; y++) {
|
||||
out = imOut->image[y] + x0*imOut->pixelsize;
|
||||
for (x = x0; x < x1; x++) {
|
||||
if (!transform(&xx, &yy, x-x0, y-y0, transform_data) ||
|
||||
out = imOut->image[y] + x0*imOut->pixelsize;
|
||||
for (x = x0; x < x1; x++) {
|
||||
if (!transform(&xx, &yy, x-x0, y-y0, transform_data) ||
|
||||
!filter(out, imIn, xx, yy, filter_data)) {
|
||||
if (fill)
|
||||
memset(out, 0, imOut->pixelsize);
|
||||
}
|
||||
out += imOut->pixelsize;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ImagingSectionLeave(&cookie);
|
||||
|
|
@ -644,7 +702,7 @@ ImagingScaleAffine(Imaging imOut, Imaging imIn,
|
|||
int *xintab;
|
||||
|
||||
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
|
||||
return (Imaging) ImagingError_ModeError();
|
||||
return (Imaging) ImagingError_ModeError();
|
||||
|
||||
ImagingCopyInfo(imOut, imIn);
|
||||
|
||||
|
|
@ -659,8 +717,8 @@ ImagingScaleAffine(Imaging imOut, Imaging imIn,
|
|||
|
||||
xintab = (int*) malloc(imOut->xsize * sizeof(int));
|
||||
if (!xintab) {
|
||||
ImagingDelete(imOut);
|
||||
return (Imaging) ImagingError_MemoryError();
|
||||
ImagingDelete(imOut);
|
||||
return (Imaging) ImagingError_MemoryError();
|
||||
}
|
||||
|
||||
xo = a[0];
|
||||
|
|
@ -671,29 +729,29 @@ ImagingScaleAffine(Imaging imOut, Imaging imIn,
|
|||
|
||||
/* Pretabulate horizontal pixel positions */
|
||||
for (x = x0; x < x1; x++) {
|
||||
xin = COORD(xo);
|
||||
if (xin >= 0 && xin < (int) imIn->xsize) {
|
||||
xmax = x+1;
|
||||
if (x < xmin)
|
||||
xmin = x;
|
||||
xintab[x] = xin;
|
||||
}
|
||||
xo += a[1];
|
||||
xin = COORD(xo);
|
||||
if (xin >= 0 && xin < (int) imIn->xsize) {
|
||||
xmax = x+1;
|
||||
if (x < xmin)
|
||||
xmin = x;
|
||||
xintab[x] = xin;
|
||||
}
|
||||
xo += a[1];
|
||||
}
|
||||
|
||||
#define AFFINE_SCALE(pixel, image)\
|
||||
#define AFFINE_SCALE(pixel, image)\
|
||||
for (y = y0; y < y1; y++) {\
|
||||
int yi = COORD(yo);\
|
||||
pixel *in, *out;\
|
||||
out = imOut->image[y];\
|
||||
int yi = COORD(yo);\
|
||||
pixel *in, *out;\
|
||||
out = imOut->image[y];\
|
||||
if (fill && x1 > x0)\
|
||||
memset(out+x0, 0, (x1-x0)*sizeof(pixel));\
|
||||
if (yi >= 0 && yi < imIn->ysize) {\
|
||||
in = imIn->image[yi];\
|
||||
for (x = xmin; x < xmax; x++)\
|
||||
out[x] = in[xintab[x]];\
|
||||
}\
|
||||
yo += a[5];\
|
||||
if (yi >= 0 && yi < imIn->ysize) {\
|
||||
in = imIn->image[yi];\
|
||||
for (x = xmin; x < xmax; x++)\
|
||||
out[x] = in[xintab[x]];\
|
||||
}\
|
||||
yo += a[5];\
|
||||
}
|
||||
|
||||
ImagingSectionEnter(&cookie);
|
||||
|
|
@ -743,32 +801,32 @@ affine_fixed(Imaging imOut, Imaging imIn,
|
|||
a0 = FIX(a[0]); a1 = FIX(a[1]); a2 = FIX(a[2]);
|
||||
a3 = FIX(a[3]); a4 = FIX(a[4]); a5 = FIX(a[5]);
|
||||
|
||||
#define AFFINE_TRANSFORM_FIXED(pixel, image)\
|
||||
#define AFFINE_TRANSFORM_FIXED(pixel, image)\
|
||||
for (y = y0; y < y1; y++) {\
|
||||
pixel *out;\
|
||||
xx = a0;\
|
||||
yy = a3;\
|
||||
out = imOut->image[y];\
|
||||
pixel *out;\
|
||||
xx = a0;\
|
||||
yy = a3;\
|
||||
out = imOut->image[y];\
|
||||
if (fill && x1 > x0)\
|
||||
memset(out+x0, 0, (x1-x0)*sizeof(pixel));\
|
||||
for (x = x0; x < x1; x++, out++) {\
|
||||
xin = xx >> 16;\
|
||||
if (xin >= 0 && xin < xsize) {\
|
||||
yin = yy >> 16;\
|
||||
if (yin >= 0 && yin < ysize)\
|
||||
xin = xx >> 16;\
|
||||
if (xin >= 0 && xin < xsize) {\
|
||||
yin = yy >> 16;\
|
||||
if (yin >= 0 && yin < ysize)\
|
||||
*out = imIn->image[yin][xin];\
|
||||
}\
|
||||
xx += a1;\
|
||||
yy += a4;\
|
||||
}\
|
||||
a0 += a2;\
|
||||
a3 += a5;\
|
||||
xx += a1;\
|
||||
yy += a4;\
|
||||
}\
|
||||
a0 += a2;\
|
||||
a3 += a5;\
|
||||
}
|
||||
|
||||
if (imIn->image8)
|
||||
AFFINE_TRANSFORM_FIXED(UINT8, image8)
|
||||
AFFINE_TRANSFORM_FIXED(UINT8, image8)
|
||||
else
|
||||
AFFINE_TRANSFORM_FIXED(INT32, image32)
|
||||
AFFINE_TRANSFORM_FIXED(INT32, image32)
|
||||
|
||||
return imOut;
|
||||
}
|
||||
|
|
@ -801,11 +859,11 @@ ImagingTransformAffine(Imaging imOut, Imaging imIn,
|
|||
}
|
||||
|
||||
if (a[2] == 0 && a[4] == 0)
|
||||
/* Scaling */
|
||||
return ImagingScaleAffine(imOut, imIn, x0, y0, x1, y1, a, fill);
|
||||
/* Scaling */
|
||||
return ImagingScaleAffine(imOut, imIn, x0, y0, x1, y1, a, fill);
|
||||
|
||||
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
|
||||
return (Imaging) ImagingError_ModeError();
|
||||
return (Imaging) ImagingError_ModeError();
|
||||
|
||||
if (x0 < 0)
|
||||
x0 = 0;
|
||||
|
|
@ -835,34 +893,34 @@ ImagingTransformAffine(Imaging imOut, Imaging imIn,
|
|||
xo = a[0];
|
||||
yo = a[3];
|
||||
|
||||
#define AFFINE_TRANSFORM(pixel, image)\
|
||||
#define AFFINE_TRANSFORM(pixel, image)\
|
||||
for (y = y0; y < y1; y++) {\
|
||||
pixel *out;\
|
||||
xx = xo;\
|
||||
yy = yo;\
|
||||
out = imOut->image[y];\
|
||||
pixel *out;\
|
||||
xx = xo;\
|
||||
yy = yo;\
|
||||
out = imOut->image[y];\
|
||||
if (fill && x1 > x0)\
|
||||
memset(out+x0, 0, (x1-x0)*sizeof(pixel));\
|
||||
for (x = x0; x < x1; x++, out++) {\
|
||||
xin = COORD(xx);\
|
||||
if (xin >= 0 && xin < xsize) {\
|
||||
yin = COORD(yy);\
|
||||
if (yin >= 0 && yin < ysize)\
|
||||
xin = COORD(xx);\
|
||||
if (xin >= 0 && xin < xsize) {\
|
||||
yin = COORD(yy);\
|
||||
if (yin >= 0 && yin < ysize)\
|
||||
*out = imIn->image[yin][xin];\
|
||||
}\
|
||||
xx += a[1];\
|
||||
yy += a[4];\
|
||||
}\
|
||||
xo += a[2];\
|
||||
yo += a[5];\
|
||||
xx += a[1];\
|
||||
yy += a[4];\
|
||||
}\
|
||||
xo += a[2];\
|
||||
yo += a[5];\
|
||||
}
|
||||
|
||||
ImagingSectionEnter(&cookie);
|
||||
|
||||
if (imIn->image8)
|
||||
AFFINE_TRANSFORM(UINT8, image8)
|
||||
AFFINE_TRANSFORM(UINT8, image8)
|
||||
else
|
||||
AFFINE_TRANSFORM(INT32, image32)
|
||||
AFFINE_TRANSFORM(INT32, image32)
|
||||
|
||||
ImagingSectionLeave(&cookie);
|
||||
|
||||
|
|
@ -912,7 +970,7 @@ ImagingResize(Imaging imOut, Imaging imIn, int filterid)
|
|||
double a[6];
|
||||
|
||||
if (imOut->xsize == imIn->xsize && imOut->ysize == imIn->ysize)
|
||||
return ImagingCopy2(imOut, imIn);
|
||||
return ImagingCopy2(imOut, imIn);
|
||||
|
||||
memset(a, 0, sizeof a);
|
||||
a[1] = (double) imIn->xsize / imOut->xsize;
|
||||
|
|
|
|||
|
|
@ -292,6 +292,7 @@ extern Imaging ImagingRotate90(Imaging imOut, Imaging imIn);
|
|||
extern Imaging ImagingRotate180(Imaging imOut, Imaging imIn);
|
||||
extern Imaging ImagingRotate270(Imaging imOut, Imaging imIn);
|
||||
extern Imaging ImagingStretch(Imaging imOut, Imaging imIn, int filter);
|
||||
extern Imaging ImagingTranspose(Imaging imOut, Imaging imIn);
|
||||
extern Imaging ImagingTransformPerspective(
|
||||
Imaging imOut, Imaging imIn, int x0, int y0, int x1, int y1,
|
||||
double a[8], int filter, int fill);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user