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-rw-r--r--riscos/buffer.c396
1 files changed, 0 insertions, 396 deletions
diff --git a/riscos/buffer.c b/riscos/buffer.c
deleted file mode 100644
index 7176c1c1c..000000000
--- a/riscos/buffer.c
+++ /dev/null
@@ -1,396 +0,0 @@
-/*
- * Copyright 2004, 2005 Richard Wilson <info@tinct.net>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <swis.h>
-#include <oslib/colourtrans.h>
-#include <oslib/os.h>
-#include <oslib/osspriteop.h>
-#include <oslib/wimp.h>
-#include <oslib/wimpreadsysinfo.h>
-
-#include "utils/nsoption.h"
-#include "utils/log.h"
-
-#include "riscos/buffer.h"
-#include "riscos/gui.h"
-#include "riscos/tinct.h"
-#include "riscos/wimp.h"
-#include "riscos/wimputils.h"
-
-#define BUFFER_EXCLUSIVE_USER_REDRAW "Only support pure user redraw (faster)"
-//#define BUFFER_EMULATE_32BPP "Redirect to a 32bpp sprite and plot with Tinct"
-
-/** Absent from OSLib
-*/
-#ifndef osspriteop_TYPEEXPANSION
-#define osspriteop_TYPEEXPANSION ((osspriteop_mode_word) 0xFu)
-#endif
-#ifndef osspriteop_TYPE16BPP4K
-#define osspriteop_TYPE16BPP4K ((osspriteop_mode_word) 0x10u)
-#endif
-
-static void ro_gui_buffer_free(void);
-
-
-/** The buffer characteristics
-*/
-static osspriteop_area *buffer = NULL;
-static char buffer_name[12] = "scr_buffer";
-
-/** The current clip area
-*/
-static os_box clipping;
-
-/** The current save area
-*/
-static osspriteop_save_area *save_area;
-static int context0;
-static int context1;
-static int context2;
-static int context3;
-
-/** The current sprite mode
-*/
-static os_mode mode;
-
-
-/**
- * Opens a buffer for writing to.
- *
- * The ro_plot_origin_ variables are updated to reflect the new screen origin,
- * so the variables should be set before calling this function, and not
- * changed until after ro_gui_buffer_close() has been called.
- *
- * \param redraw the current WIMP redraw area to buffer
- */
-void ro_gui_buffer_open(wimp_draw *redraw)
-{
- int size;
- int total_size;
- os_coord sprite_size;
- int bpp, word_width;
- bool palette;
- os_error *error;
- int palette_size = 0;
-#ifdef BUFFER_EXCLUSIVE_USER_REDRAW
- osspriteop_header *header;
-#endif
-
- /* Close any open buffer
- */
- if (buffer)
- ro_gui_buffer_close();
-
- /* Store our clipping region
- */
- clipping = redraw->clip;
-
- /* Stop bad rectangles
- */
- if ((clipping.x1 < clipping.x0) ||
- (clipping.y1 < clipping.y0)) {
- LOG("Invalid clipping rectangle (%i, %i) to (%i,%i)", clipping.x0, clipping.y0, clipping.x1, clipping.y1);
- return;
- }
-
- /* Work out how much buffer we need
- */
- sprite_size.x = clipping.x1 - clipping.x0 + 1;
- sprite_size.y = clipping.y1 - clipping.y0 + 1;
- ro_convert_os_units_to_pixels(&sprite_size, (os_mode)-1);
- if (sprite_size.y == 1) /* work around SpriteExtend bug */
- sprite_size.y = 2;
-
-#ifdef BUFFER_EMULATE_32BPP
- bpp = 5;
- palette = false;
-#else
- /* Get the screen depth as we can't use palettes for >8bpp
- */
- xos_read_mode_variable((os_mode)-1, os_MODEVAR_LOG2_BPP, &bpp, 0);
- palette = (bpp < 4);
-#endif
-
- /* Get our required buffer size
- */
- word_width = ((sprite_size.x << bpp) + 31) >> 5;
- if (palette)
- palette_size = ((1 << (1 << bpp)) << 3);
- total_size = sizeof(osspriteop_area) + sizeof(osspriteop_header) +
- (word_width * sprite_size.y * 4) + palette_size;
- buffer = (osspriteop_area *)malloc(total_size);
- if (!buffer) {
- LOG("Failed to allocate memory");
- ro_gui_buffer_free();
- return;
- }
- buffer->size = total_size;
- buffer->first = 16;
-
-#ifdef BUFFER_EMULATE_32BPP
- mode = tinct_SPRITE_MODE;
-#else
- if ((error = xwimpreadsysinfo_wimp_mode(&mode)) != NULL) {
- LOG("Error reading mode '%s'", error->errmess);
- ro_gui_buffer_free();
- return;
- }
-
- /* if we're not in a numbered screen mode then we need
- to build a suitable sprite mode word */
- if (mode >= (os_mode)0x100) {
- static const ns_os_vdu_var_list vars = {
- os_MODEVAR_LOG2_BPP,
- {
- os_MODEVAR_MODE_FLAGS,
- os_MODEVAR_NCOLOUR,
- os_MODEVAR_XEIG_FACTOR,
- os_MODEVAR_YEIG_FACTOR,
- os_VDUVAR_END_LIST
- }
- };
- struct {
- int log2bpp;
- int flags;
- int ncolour;
- int xeig, yeig;
- } vals;
- int type;
-
- error = xos_read_vdu_variables(PTR_OS_VDU_VAR_LIST(&vars), (int *)&vals);
- if (error) {
- LOG("Error reading mode properties '%s'", error->errmess);
- ro_gui_buffer_free();
- return;
- }
-
- switch (vals.ncolour) {
- case 1:
- case 3:
- case 15:
- case 63:
- case 255:
- /* Paletted modes are pixel packing order agnostic */
- type = 1 + vals.log2bpp;
- mode = (os_mode)((type << osspriteop_TYPE_SHIFT) |
- osspriteop_NEW_STYLE |
- ((180 >> vals.yeig) << osspriteop_YRES_SHIFT) |
- ((180 >> vals.xeig) << osspriteop_XRES_SHIFT));
- break;
- case 4095:
- /* 16bpp 4k colours */
- type = osspriteop_TYPE16BPP4K;
- mode = (os_mode)((osspriteop_TYPEEXPANSION << osspriteop_TYPE_SHIFT) |
- osspriteop_NEW_STYLE |
- (vals.yeig << 6) |
- (vals.xeig << 4) |
- (type << 20) |
- (vals.flags & 0xFF00));
- break;
- case 65535:
- switch ((vals.flags & 0x3000) >> os_MODE_FLAG_DATA_FORMAT_SHIFT) {
- case os_MODE_FLAG_DATA_FORMAT_RGB:
- if (vals.flags & 0xC000) {
- /* Non VIDC packing order */
- if (vals.flags & os_MODE_FLAG_FULL_PALETTE)
- type = osspriteop_TYPE16BPP64K;
- else
- type = osspriteop_TYPE16BPP;
- mode = (os_mode)((osspriteop_TYPEEXPANSION << osspriteop_TYPE_SHIFT) |
- osspriteop_NEW_STYLE |
- (vals.yeig << 6) |
- (vals.xeig << 4) |
- (type << 20) |
- (vals.flags & 0xFF00));
- } else {
- /* VIDC packing order */
- if (vals.flags & os_MODE_FLAG_FULL_PALETTE)
- type = osspriteop_TYPE16BPP64K;
- else
- type = osspriteop_TYPE16BPP;
- mode = (os_mode)((type << osspriteop_TYPE_SHIFT) |
- osspriteop_NEW_STYLE |
- ((180 >> vals.yeig) << osspriteop_YRES_SHIFT) |
- ((180 >> vals.xeig) << osspriteop_XRES_SHIFT));
- }
- break;
- default:
- LOG("Unhandled 16bpp format from flags %d", vals.flags);
- ro_gui_buffer_free();
- return;
- }
- break;
- case -1:
- /* 16M colours */
- switch ((vals.flags & 0x3000) >> os_MODE_FLAG_DATA_FORMAT_SHIFT) {
- case os_MODE_FLAG_DATA_FORMAT_RGB:
- if (vals.flags & 0xC000) {
- /* Non VIDC packing order */
- type = osspriteop_TYPE32BPP;
- mode = (os_mode)((osspriteop_TYPEEXPANSION << osspriteop_TYPE_SHIFT) |
- osspriteop_NEW_STYLE |
- (vals.yeig << 6) |
- (vals.xeig << 4) |
- (type << 20) |
- (vals.flags & 0xFF00));
- } else {
- /* VIDC packing order */
- type = osspriteop_TYPE32BPP;
- mode = (os_mode)((type << osspriteop_TYPE_SHIFT) |
- osspriteop_NEW_STYLE |
- ((180 >> vals.yeig) << osspriteop_YRES_SHIFT) |
- ((180 >> vals.xeig) << osspriteop_XRES_SHIFT));
- }
- break;
- default:
- LOG("Unhandled 32bpp data format from flags %d", vals.flags);
- ro_gui_buffer_free();
- return;
- }
- break;
- default:
- LOG("Unhandled NCOLOUR value %d", vals.ncolour);
- ro_gui_buffer_free();
- return;
- }
- }
-#endif
-
-#ifdef BUFFER_EXCLUSIVE_USER_REDRAW
- /* Create the sprite manually so we don't waste time clearing the
- background.
- */
- buffer->sprite_count = 1;
- buffer->used = total_size;
- header = (osspriteop_header *)(buffer + 1);
- header->size = total_size - sizeof(osspriteop_area);
- memcpy(header->name, buffer_name, 12);
- header->width = word_width - 1;
- header->height = sprite_size.y - 1;
- header->left_bit = 0;
- header->right_bit = ((sprite_size.x << bpp) - 1) & 31;
- header->image = sizeof(osspriteop_header) + palette_size;
- header->mask = header->image;
- header->mode = mode;
- if (palette)
- xcolourtrans_read_palette((osspriteop_area *)mode,
- (osspriteop_id)os_CURRENT_MODE,
- (os_palette *)(header + 1), palette_size,
- (colourtrans_palette_flags)
- colourtrans_FLASHING_PALETTE, 0);
-#else
- /* Read the current contents of the screen
- */
- buffer->sprite_count = 0;
- buffer->used = 16;
- if ((error = xosspriteop_get_sprite_user_coords(osspriteop_NAME,
- buffer, buffer_name, palette,
- clipping.x0, clipping.y0,
- clipping.x1, clipping.y1)) != NULL) {
- LOG("Grab error '%s'", error->errmess);
- ro_gui_buffer_free();
- return;
- }
-#endif
- /* Allocate OS_SpriteOp save area
- */
- if ((error = xosspriteop_read_save_area_size(osspriteop_PTR,
- buffer, (osspriteop_id)(buffer + 1), &size)) != NULL) {
- LOG("Save area error '%s'", error->errmess);
- ro_gui_buffer_free();
- return;
- }
- if ((save_area = malloc((size_t)size)) == NULL) {
- ro_gui_buffer_free();
- return;
- }
- save_area->a[0] = 0;
-
- /* Switch output to sprite
- */
- if ((error = xosspriteop_switch_output_to_sprite(osspriteop_PTR,
- buffer, (osspriteop_id)(buffer + 1), save_area,
- &context0, &context1, &context2, &context3)) != NULL) {
- LOG("Switching error '%s'", error->errmess);
- free(save_area);
- ro_gui_buffer_free();
- return;
- }
-
- /* Emulate an origin as the FontManager doesn't respect it in
- most cases.
- */
- ro_plot_origin_x -= clipping.x0;
- ro_plot_origin_y -= clipping.y0;
-
- /* Update the ECF origin
- */
- if ((error = xos_set_ecf_origin(-ro_plot_origin_x,
- -ro_plot_origin_y)) != NULL) {
- LOG("Invalid ECF origin: '%s'", error->errmess);
- }
-}
-
-
-/**
- * Closes any open buffer and flushes the contents to screen
- */
-void ro_gui_buffer_close(void)
-{
- /* Check we have an open buffer
- */
- if (!buffer)
- return;
-
- /* Remove any previous redirection
- */
- ro_plot_origin_x += clipping.x0;
- ro_plot_origin_y += clipping.y0;
- xosspriteop_unswitch_output(context0, context1, context2, context3);
- free(save_area);
-
- /* Plot the contents to screen
- */
- if (mode == tinct_SPRITE_MODE)
- _swix(Tinct_Plot, _IN(2) | _IN(3) | _IN(4) | _IN(7),
- (char *)(buffer + 1),
- clipping.x0, clipping.y0,
- nsoption_int(plot_fg_quality));
- else
- xosspriteop_put_sprite_user_coords(osspriteop_PTR,
- buffer, (osspriteop_id)(buffer + 1),
- clipping.x0, clipping.y0, (os_action)0);
- ro_gui_buffer_free();
-
- /* Update the ECF origin
- */
- os_set_ecf_origin(0, 0);
-}
-
-
-/**
- * Releases any buffer memory depending on cache constraints.
- */
-static void ro_gui_buffer_free(void)
-{
- free(buffer);
- buffer = NULL;
-}
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