add pixman and libpngraylib

1 files changed, 264 insertions, 0 deletions

diff --git a/libs/pixman-0.40.0/pixman/pixman-general.c b/libs/pixman-0.40.0/pixman/pixman-general.c
new file mode 100644
index 0000000..7e5a0d0
--- /dev/null
+++ b/libs/pixman-0.40.0/pixman/pixman-general.c
@@ -0,0 +1,264 @@
+/*
+ * Copyright © 2009 Red Hat, Inc.
+ * Copyright © 2000 SuSE, Inc.
+ * Copyright © 2007 Red Hat, Inc.
+ * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ *             2005 Lars Knoll & Zack Rusin, Trolltech
+ *             2008 Aaron Plattner, NVIDIA Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Red Hat not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  Red Hat makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pixman-private.h"
+
+static void
+general_iter_init (pixman_iter_t *iter, const pixman_iter_info_t *info)
+{
+    pixman_image_t *image = iter->image;
+
+    switch (image->type)
+    {
+    case BITS:
+        if ((iter->iter_flags & ITER_SRC) == ITER_SRC)
+            _pixman_bits_image_src_iter_init (image, iter);
+        else
+            _pixman_bits_image_dest_iter_init (image, iter);
+        break;
+
+    case LINEAR:
+        _pixman_linear_gradient_iter_init (image, iter);
+        break;
+
+    case RADIAL:
+	_pixman_radial_gradient_iter_init (image, iter);
+        break;
+
+    case CONICAL:
+	_pixman_conical_gradient_iter_init (image, iter);
+        break;
+
+    case SOLID:
+        _pixman_log_error (FUNC, "Solid image not handled by noop");
+        break;
+
+    default:
+	_pixman_log_error (FUNC, "Pixman bug: unknown image type\n");
+        break;
+    }
+}
+
+static const pixman_iter_info_t general_iters[] =
+{
+    { PIXMAN_any, 0, 0, general_iter_init, NULL, NULL },
+    { PIXMAN_null },
+};
+
+typedef struct op_info_t op_info_t;
+struct op_info_t
+{
+    uint8_t src, dst;
+};
+
+#define ITER_IGNORE_BOTH						\
+    (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB | ITER_LOCALIZED_ALPHA)
+
+static const op_info_t op_flags[PIXMAN_N_OPERATORS] =
+{
+    /* Src                   Dst                   */
+    { ITER_IGNORE_BOTH,      ITER_IGNORE_BOTH      }, /* CLEAR */
+    { ITER_LOCALIZED_ALPHA,  ITER_IGNORE_BOTH      }, /* SRC */
+    { ITER_IGNORE_BOTH,      ITER_LOCALIZED_ALPHA  }, /* DST */
+    { 0,                     ITER_LOCALIZED_ALPHA  }, /* OVER */
+    { ITER_LOCALIZED_ALPHA,  0                     }, /* OVER_REVERSE */
+    { ITER_LOCALIZED_ALPHA,  ITER_IGNORE_RGB       }, /* IN */
+    { ITER_IGNORE_RGB,       ITER_LOCALIZED_ALPHA  }, /* IN_REVERSE */
+    { ITER_LOCALIZED_ALPHA,  ITER_IGNORE_RGB       }, /* OUT */
+    { ITER_IGNORE_RGB,       ITER_LOCALIZED_ALPHA  }, /* OUT_REVERSE */
+    { 0,                     0                     }, /* ATOP */
+    { 0,                     0                     }, /* ATOP_REVERSE */
+    { 0,                     0                     }, /* XOR */
+    { ITER_LOCALIZED_ALPHA,  ITER_LOCALIZED_ALPHA  }, /* ADD */
+    { 0,                     0                     }, /* SATURATE */
+};
+
+#define SCANLINE_BUFFER_LENGTH 8192
+
+static pixman_bool_t
+operator_needs_division (pixman_op_t op)
+{
+    static const uint8_t needs_division[] =
+    {
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, /* SATURATE */
+	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, /* DISJOINT */
+	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, /* CONJOINT */
+	0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, /* blend ops */
+    };
+
+    return needs_division[op];
+}
+
+static void
+general_composite_rect  (pixman_implementation_t *imp,
+                         pixman_composite_info_t *info)
+{
+    PIXMAN_COMPOSITE_ARGS (info);
+    uint8_t stack_scanline_buffer[3 * SCANLINE_BUFFER_LENGTH];
+    uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
+    uint8_t *src_buffer, *mask_buffer, *dest_buffer;
+    pixman_iter_t src_iter, mask_iter, dest_iter;
+    pixman_combine_32_func_t compose;
+    pixman_bool_t component_alpha;
+    iter_flags_t width_flag, src_iter_flags;
+    int Bpp;
+    int i;
+
+    if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT)		     &&
+	(!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT)  &&
+	(dest_image->common.flags & FAST_PATH_NARROW_FORMAT)		     &&
+	!(operator_needs_division (op))                                      &&
+	(dest_image->bits.dither == PIXMAN_DITHER_NONE))
+    {
+	width_flag = ITER_NARROW;
+	Bpp = 4;
+    }
+    else
+    {
+	width_flag = ITER_WIDE;
+	Bpp = 16;
+    }
+
+#define ALIGN(addr)							\
+    ((uint8_t *)((((uintptr_t)(addr)) + 15) & (~15)))
+
+    if (width <= 0 || _pixman_multiply_overflows_int (width, Bpp * 3))
+	return;
+
+    if (width * Bpp * 3 > sizeof (stack_scanline_buffer) - 15 * 3)
+    {
+	scanline_buffer = pixman_malloc_ab_plus_c (width, Bpp * 3, 15 * 3);
+
+	if (!scanline_buffer)
+	    return;
+
+	memset (scanline_buffer, 0, width * Bpp * 3 + 15 * 3);
+    }
+    else
+    {
+	memset (stack_scanline_buffer, 0, sizeof (stack_scanline_buffer));
+    }
+
+    src_buffer = ALIGN (scanline_buffer);
+    mask_buffer = ALIGN (src_buffer + width * Bpp);
+    dest_buffer = ALIGN (mask_buffer + width * Bpp);
+
+    if (width_flag == ITER_WIDE)
+    {
+	/* To make sure there aren't any NANs in the buffers */
+	memset (src_buffer, 0, width * Bpp);
+	memset (mask_buffer, 0, width * Bpp);
+	memset (dest_buffer, 0, width * Bpp);
+    }
+    
+    /* src iter */
+    src_iter_flags = width_flag | op_flags[op].src | ITER_SRC;
+
+    _pixman_implementation_iter_init (imp->toplevel, &src_iter, src_image,
+                                      src_x, src_y, width, height,
+                                      src_buffer, src_iter_flags,
+                                      info->src_flags);
+
+    /* mask iter */
+    if ((src_iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
+	(ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
+    {
+	/* If it doesn't matter what the source is, then it doesn't matter
+	 * what the mask is
+	 */
+	mask_image = NULL;
+    }
+
+    component_alpha = mask_image && mask_image->common.component_alpha;
+
+    _pixman_implementation_iter_init (
+	imp->toplevel, &mask_iter,
+	mask_image, mask_x, mask_y, width, height, mask_buffer,
+	ITER_SRC | width_flag | (component_alpha? 0 : ITER_IGNORE_RGB),
+	info->mask_flags);
+
+    /* dest iter */
+    _pixman_implementation_iter_init (
+	imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height,
+	dest_buffer, ITER_DEST | width_flag | op_flags[op].dst, info->dest_flags);
+
+    compose = _pixman_implementation_lookup_combiner (
+	imp->toplevel, op, component_alpha, width_flag != ITER_WIDE);
+
+    for (i = 0; i < height; ++i)
+    {
+	uint32_t *s, *m, *d;
+
+	m = mask_iter.get_scanline (&mask_iter, NULL);
+	s = src_iter.get_scanline (&src_iter, m);
+	d = dest_iter.get_scanline (&dest_iter, NULL);
+
+	compose (imp->toplevel, op, d, s, m, width);
+
+	dest_iter.write_back (&dest_iter);
+    }
+
+    if (src_iter.fini)
+	src_iter.fini (&src_iter);
+    if (mask_iter.fini)
+	mask_iter.fini (&mask_iter);
+    if (dest_iter.fini)
+	dest_iter.fini (&dest_iter);
+    
+    if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
+	free (scanline_buffer);
+}
+
+static const pixman_fast_path_t general_fast_path[] =
+{
+    { PIXMAN_OP_any, PIXMAN_any, 0, PIXMAN_any,	0, PIXMAN_any, 0, general_composite_rect },
+    { PIXMAN_OP_NONE }
+};
+
+pixman_implementation_t *
+_pixman_implementation_create_general (void)
+{
+    pixman_implementation_t *imp = _pixman_implementation_create (NULL, general_fast_path);
+
+    _pixman_setup_combiner_functions_32 (imp);
+    _pixman_setup_combiner_functions_float (imp);
+
+    imp->iter_info = general_iters;
+
+    return imp;
+}
+