[project @ 2004-09-04 16:41:28 by jmb]

Fix jpeg redraw
Move png.c/h to /image and rework to use the bitmap code
Make RISC OS bitmap struct publically accessible (via riscos/bitmap.h)
Draw export now embeds JPEGs and PNGs/MNGs/JNGs correctly again.
Background images are now plotted correctly again.

svn path=/import/netsurf/; revision=1268

1 files changed, 0 insertions, 278 deletions

diff --git a/riscos/png.c b/riscos/png.c
deleted file mode 100644
index 8d6ae8265..000000000
--- a/riscos/png.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * This file is part of NetSurf, http://netsurf.sourceforge.net/
- * Licensed under the GNU General Public License,
- *                http://www.opensource.org/licenses/gpl-license
- * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
- * Copyright 2004 Richard Wilson <not_ginger_matt@hotmail.com>
- */
-
-#include <assert.h>
-#include <stdbool.h>
-#include <string.h>
-#include <stdlib.h>
-#include "libpng/png.h"
-#include "oslib/osspriteop.h"
-#include "netsurf/utils/config.h"
-#include "netsurf/content/content.h"
-#include "netsurf/riscos/gui.h"
-#include "netsurf/riscos/image.h"
-#include "netsurf/riscos/options.h"
-#include "netsurf/riscos/png.h"
-#include "netsurf/utils/log.h"
-#include "netsurf/utils/messages.h"
-#include "netsurf/utils/utils.h"
-
-#ifdef WITH_PNG
-/* libpng uses names starting png_, so use nspng_ here to avoid clashes */
-
-static void info_callback(png_structp png, png_infop info);
-static void row_callback(png_structp png, png_bytep new_row,
-		png_uint_32 row_num, int pass);
-static void end_callback(png_structp png, png_infop info);
-
-
-bool nspng_create(struct content *c, const char *params[])
-{
-	union content_msg_data msg_data;
-
-	c->data.png.sprite_area = 0;
-	c->data.png.png = png_create_read_struct(PNG_LIBPNG_VER_STRING,
-			0, 0, 0);
-	if (!c->data.png.png) {
-		msg_data.error = messages_get("NoMemory");
-		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
-		warn_user("NoMemory", 0);
-		return false;
-	}
-	c->data.png.info = png_create_info_struct(c->data.png.png);
-	if (!c->data.png.info) {
-		png_destroy_read_struct(&c->data.png.png,
-				&c->data.png.info, 0);
-
-		msg_data.error = messages_get("NoMemory");
-		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
-		warn_user("NoMemory", 0);
-		return false;
-	}
-
-	if (setjmp(png_jmpbuf(c->data.png.png))) {
-		png_destroy_read_struct(&c->data.png.png,
-				&c->data.png.info, 0);
-		LOG(("Failed to set callbacks"));
-		c->data.png.png = NULL;
-		c->data.png.info = NULL;
-
-		msg_data.error = messages_get("PNGError");
-		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
-		return false;
-	}
-
-	png_set_progressive_read_fn(c->data.png.png, c,
-			info_callback, row_callback, end_callback);
-
-	return true;
-}
-
-
-bool nspng_process_data(struct content *c, char *data, unsigned int size)
-{
-	union content_msg_data msg_data;
-
-	if (setjmp(png_jmpbuf(c->data.png.png))) {
-		png_destroy_read_struct(&c->data.png.png,
-				&c->data.png.info, 0);
-		LOG(("Failed to process data"));
-		c->data.png.png = NULL;
-		c->data.png.info = NULL;
-
-		msg_data.error = messages_get("PNGError");
-		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
-		return false;
-	}
-
-	png_process_data(c->data.png.png, c->data.png.info, data, size);
-
-	return true;
-}
-
-
-/**
- * info_callback -- PNG header has been completely received, prepare to process
- * image data
- */
-
-void info_callback(png_structp png, png_infop info)
-{
-	int bit_depth, color_type, interlace, intent;
-	double gamma;
-	unsigned int rowbytes, sprite_size;
-	unsigned long width, height;
-	struct content *c = png_get_progressive_ptr(png);
-	osspriteop_area *sprite_area;
-	osspriteop_header *sprite;
-
-	/*	Read the PNG details
-	*/
-	png_get_IHDR(png, info, &width, &height, &bit_depth,
-			&color_type, &interlace, 0, 0);
-
-	/*	Claim the required memory for the converted PNG
-	*/
-	sprite_size = sizeof(*sprite_area) + sizeof(*sprite) + (height * width * 4);
-	sprite_area = xcalloc(sprite_size, 1);
-
-	/*	Fill in the sprite area header information
-	*/
-	sprite_area->size = sprite_size;
-	sprite_area->sprite_count = 1;
-	sprite_area->first = sizeof(*sprite_area);
-	sprite_area->used = sprite_size;
-
-	/*	Fill in the sprite header information
-	*/
-	sprite = (osspriteop_header *) (sprite_area + 1);
-	sprite->size = sprite_size - sizeof(*sprite_area);
-	memset(sprite->name, 0x00, 12);
-	strcpy(sprite->name, "png");
-	sprite->width = width - 1;
-	sprite->height = height - 1;
-	sprite->left_bit = 0;
-	sprite->right_bit = 31;
-	sprite->mask = sprite->image = sizeof(*sprite);
-	sprite->mode = (os_mode) 0x301680b5;
-
-	/*	Store the sprite area
-	*/
-	c->data.png.sprite_area = sprite_area;
-
-	/*	Set up our transformations
-	*/
-	if (color_type == PNG_COLOR_TYPE_PALETTE)
-		png_set_palette_to_rgb(png);
-	if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
-		png_set_gray_1_2_4_to_8(png);
-	if (png_get_valid(png, info, PNG_INFO_tRNS))
-		png_set_tRNS_to_alpha(png);
-	if (bit_depth == 16)
-		png_set_strip_16(png);
-	if (color_type == PNG_COLOR_TYPE_GRAY ||
-			color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
-		png_set_gray_to_rgb(png);
-	if (!(color_type & PNG_COLOR_MASK_ALPHA))
-		png_set_filler(png, 0xff, PNG_FILLER_AFTER);
-	/* gamma correction - we use 2.2 as our screen gamma
-	 * this appears to be correct (at least in respect to !Browse)
-	 * see http://www.w3.org/Graphics/PNG/all_seven.html for a test case
-	 */
-	if (png_get_sRGB(png, info, &intent))
-	        png_set_gamma(png, 2.2, 0.45455);
-	else {
-	        if (png_get_gAMA(png, info, &gamma))
-	                png_set_gamma(png, 2.2, gamma);
-	        else
-	                png_set_gamma(png, 2.2, 0.45455);
-	}
-
-
-	png_read_update_info(png, info);
-
-	c->data.png.rowbytes = rowbytes = png_get_rowbytes(png, info);
-	c->data.png.interlace = (interlace == PNG_INTERLACE_ADAM7);
-	c->data.png.sprite_image = ((char *) sprite) + sprite->image;
-	c->width = width;
-	c->height = height;
-
-	LOG(("size %li * %li, bpp %i, rowbytes %u", width,
-				height, bit_depth, rowbytes));
-}
-
-
-static unsigned int interlace_start[8] = {0, 16, 0, 8, 0, 4, 0};
-static unsigned int interlace_step[8] = {28, 28, 12, 12, 4, 4, 0};
-static unsigned int interlace_row_start[8] = {0, 0, 4, 0, 2, 0, 1};
-static unsigned int interlace_row_step[8] = {8, 8, 8, 4, 4, 2, 2};
-
-void row_callback(png_structp png, png_bytep new_row,
-		png_uint_32 row_num, int pass)
-{
-	struct content *c = png_get_progressive_ptr(png);
-	unsigned long i, j, rowbytes = c->data.png.rowbytes;
-	unsigned int start, step;
-	char *row = c->data.png.sprite_image + row_num * (c->width * 4);
-
-	/*	Abort if we've not got any data
-	*/
-	if (new_row == 0)
-		return;
-
-	/*	Handle interlaced sprites using the Adam7 algorithm
-	*/
-	if (c->data.png.interlace) {
-		start = interlace_start[pass];
- 		step = interlace_step[pass];
-		row_num = interlace_row_start[pass] +
-				interlace_row_step[pass] * row_num;
-
-		/*	Copy the data to our current row taking into consideration interlacing
-		*/
-		row = c->data.png.sprite_image + row_num * (c->width * 4);
-		for (j = 0, i = start; i < rowbytes; i += step) {
-			row[i++] = new_row[j++];
-			row[i++] = new_row[j++];
-			row[i++] = new_row[j++];
-			row[i++] = new_row[j++];
-		}
-	} else {
-		/*	Do a fast memcpy of the row data
-		*/
-		memcpy(row, new_row, rowbytes);
-	}
-}
-
-
-void end_callback(png_structp png, png_infop info)
-{
-	/*struct content *c = png_get_progressive_ptr(png);*/
-
-	LOG(("PNG end"));
-
-	/*xosspriteop_save_sprite_file(osspriteop_USER_AREA, c->data.png.sprite_area,
-			"png");*/
-}
-
-
-
-bool nspng_convert(struct content *c, int width, int height)
-{
-	assert(c->data.png.png);
-	assert(c->data.png.info);
-
-	png_destroy_read_struct(&c->data.png.png, &c->data.png.info, 0);
-
-	c->title = malloc(100);
-	if (c->title)
-		snprintf(c->title, 100, messages_get("PNGTitle"),
-				c->width, c->height, c->source_size);
-	c->size += (c->width * c->height * 4) + 16 + 44 + 100;
-	c->status = CONTENT_STATUS_DONE;
-	return true;
-}
-
-
-void nspng_destroy(struct content *c)
-{
-	free(c->title);
-	free(c->data.png.sprite_area);
-}
-
-
-bool nspng_redraw(struct content *c, int x, int y,
-		int width, int height,
-		int clip_x0, int clip_y0, int clip_x1, int clip_y1,
-		float scale, unsigned long background_colour)
-{
-	return image_redraw(c->data.png.sprite_area, x, y, width, height,
-			c->width * 2, c->height * 2, background_colour,
-			false, false, IMAGE_PLOT_TINCT_ALPHA);
-}
-#endif