The Tor Browser: gfx/cairo/libpixman/src/pixman-noop.c@b8a032363ba2 (annotated)

gfx/cairo/libpixman/src/pixman-noop.c@b8a032363ba2 (annotated)

gfx/cairo/libpixman/src/pixman-noop.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */
 /*
  * Copyright © 2011 Red Hat, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  */
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif
 #include <string.h>
 #include <stdlib.h>
 #include "pixman-private.h"
 #include "pixman-combine32.h"
 #include "pixman-inlines.h"
 static void
 noop_composite (pixman_implementation_t *imp,
 		pixman_composite_info_t *info)
 {
     return;
 }
 static void
 dest_write_back_direct (pixman_iter_t *iter)
 {
     iter->buffer += iter->image->bits.rowstride;
 }
 static uint32_t *
 noop_get_scanline (pixman_iter_t *iter, const uint32_t *mask)
 {
     uint32_t *result = iter->buffer;
     iter->buffer += iter->image->bits.rowstride;
     return result;
 }
 static uint32_t *
 get_scanline_null (pixman_iter_t *iter, const uint32_t *mask)
 {
     return NULL;
 }
 static pixman_bool_t
 noop_src_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter)
 {
     pixman_image_t *image = iter->image;
 #define FLAGS						\
     (FAST_PATH_STANDARD_FLAGS | FAST_PATH_ID_TRANSFORM)
     if (!image)
     {
 	iter->get_scanline = get_scanline_null;
     }
     else if ((iter->iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
 	     (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
     {
 	iter->get_scanline = _pixman_iter_get_scanline_noop;
     }
     else if (image->common.extended_format_code == PIXMAN_solid		&&
 	     (iter->image->type == SOLID ||
 	      (iter->image_flags & FAST_PATH_NO_ALPHA_MAP)))
     {
 	if (iter->iter_flags & ITER_NARROW)
 	{
 	    uint32_t *buffer = iter->buffer;
 	    uint32_t *end = buffer + iter->width;
 	    uint32_t color;
 	    if (image->type == SOLID)
 		color = image->solid.color_32;
 	    else
 		color = image->bits.fetch_pixel_32 (&image->bits, 0, 0);
 	    while (buffer < end)
 		*(buffer++) = color;
 	}
 	else
 	{
 	    argb_t *buffer = (argb_t *)iter->buffer;
 	    argb_t *end = buffer + iter->width;
 	    argb_t color;
 	    if (image->type == SOLID)
 		color = image->solid.color_float;
 	    else
 		color = image->bits.fetch_pixel_float (&image->bits, 0, 0);
 	    while (buffer < end)
 		*(buffer++) = color;
 	}
 	iter->get_scanline = _pixman_iter_get_scanline_noop;
     }
     else if (image->common.extended_format_code == PIXMAN_a8r8g8b8	&&
 	     (iter->iter_flags & ITER_NARROW)				&&
 	     (iter->image_flags & FLAGS) == FLAGS			&&
 	     iter->x >= 0 && iter->y >= 0				&&
 	     iter->x + iter->width <= image->bits.width			&&
 	     iter->y + iter->height <= image->bits.height)
     {
 	iter->buffer =
 	    image->bits.bits + iter->y * image->bits.rowstride + iter->x;
 	iter->get_scanline = noop_get_scanline;
     }
     else
     {
 	return FALSE;
     }
     return TRUE;
 }
 static pixman_bool_t
 noop_dest_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter)
 {
     pixman_image_t *image = iter->image;
     uint32_t image_flags = iter->image_flags;
     uint32_t iter_flags = iter->iter_flags;
     if ((image_flags & FAST_PATH_STD_DEST_FLAGS) == FAST_PATH_STD_DEST_FLAGS	&&
 	(iter_flags & ITER_NARROW) == ITER_NARROW				&&
 	((image->common.extended_format_code == PIXMAN_a8r8g8b8)	||
 	 (image->common.extended_format_code == PIXMAN_x8r8g8b8 &&
 	  (iter_flags & (ITER_LOCALIZED_ALPHA)))))
     {
 	iter->buffer = image->bits.bits + iter->y * image->bits.rowstride + iter->x;
 	iter->get_scanline = _pixman_iter_get_scanline_noop;
 	iter->write_back = dest_write_back_direct;
 	return TRUE;
     }
     else
     {
 	return FALSE;
     }
 }
 static const pixman_fast_path_t noop_fast_paths[] =
 {
     { PIXMAN_OP_DST, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, noop_composite },
     { PIXMAN_OP_NONE },
 };
 pixman_implementation_t *
 _pixman_implementation_create_noop (pixman_implementation_t *fallback)
 {
     pixman_implementation_t *imp =
 	_pixman_implementation_create (fallback, noop_fast_paths);
     imp->src_iter_init = noop_src_iter_init;
     imp->dest_iter_init = noop_dest_iter_init;
     return imp;
 }

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gfx/cairo/libpixman/src/pixman-noop.c@b8a032363ba2 (annotated)

gfx/cairo/libpixman/src/pixman-noop.c