Put RISC OS filetype content handlers in their own directory.

svn path=/trunk/netsurf/; revision=12336

1 files changed, 311 insertions, 0 deletions

diff --git a/riscos/content-handlers/sprite.c b/riscos/content-handlers/sprite.c
new file mode 100644
index 000000000..de65faca6
--- /dev/null
+++ b/riscos/content-handlers/sprite.c
@@ -0,0 +1,311 @@
+/*
+ * Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk>
+ *
+ * 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/>.
+ */
+
+/** \file
+ * Content for image/x-riscos-sprite (RISC OS implementation).
+ *
+ * No conversion is necessary: we can render RISC OS sprites directly under
+ * RISC OS.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include "oslib/osspriteop.h"
+#include "utils/config.h"
+#include "content/content_protected.h"
+#include "desktop/plotters.h"
+#include "riscos/gui.h"
+#include "riscos/image.h"
+#include "riscos/content-handlers/sprite.h"
+#include "utils/config.h"
+#include "utils/log.h"
+#include "utils/messages.h"
+#include "utils/talloc.h"
+#include "utils/utils.h"
+
+#ifdef WITH_SPRITE
+
+typedef struct sprite_content {
+	struct content base;
+
+	void *data;
+} sprite_content;
+
+static nserror sprite_create(const content_handler *handler,
+		lwc_string *imime_type, const http_parameter *params,
+		llcache_handle *llcache, const char *fallback_charset,
+		bool quirks, struct content **c);
+static bool sprite_convert(struct content *c);
+static void sprite_destroy(struct content *c);
+static bool sprite_redraw(struct content *c, int x, int y,
+		int width, int height, const struct rect *clip,
+		float scale, colour background_colour,
+		bool repeat_x, bool repeat_y);
+static nserror sprite_clone(const struct content *old, struct content **newc);
+static content_type sprite_content_type(lwc_string *mime_type);
+
+static const content_handler sprite_content_handler = {
+	sprite_create,
+	NULL,
+	sprite_convert,
+	NULL,
+	sprite_destroy,
+	NULL,
+	NULL,
+	NULL,
+	sprite_redraw,
+	NULL,
+	NULL,
+	sprite_clone,
+	NULL,
+	sprite_content_type,
+	false
+};
+
+static const char *sprite_types[] = {
+	"image/x-riscos-sprite"
+};
+
+static lwc_string *sprite_mime_types[NOF_ELEMENTS(sprite_types)];
+
+nserror sprite_init(void)
+{
+	uint32_t i;
+	lwc_error lerror;
+	nserror error;
+
+	for (i = 0; i < NOF_ELEMENTS(sprite_mime_types); i++) {
+		lerror = lwc_intern_string(sprite_types[i],
+				strlen(sprite_types[i]),
+				&sprite_mime_types[i]);
+		if (lerror != lwc_error_ok) {
+			error = NSERROR_NOMEM;
+			goto error;
+		}
+
+		error = content_factory_register_handler(sprite_mime_types[i],
+				&sprite_content_handler);
+		if (error != NSERROR_OK)
+			goto error;
+	}
+
+	return NSERROR_OK;
+
+error:
+	sprite_fini();
+
+	return error;
+}
+
+void sprite_fini(void)
+{
+	uint32_t i;
+
+	for (i = 0; i < NOF_ELEMENTS(sprite_mime_types); i++) {
+		if (sprite_mime_types[i] != NULL)
+			lwc_string_unref(sprite_mime_types[i]);
+	}
+}
+
+nserror sprite_create(const content_handler *handler,
+		lwc_string *imime_type, const http_parameter *params,
+		llcache_handle *llcache, const char *fallback_charset,
+		bool quirks, struct content **c)
+{
+	sprite_content *sprite;
+	nserror error;
+
+	sprite = talloc_zero(0, sprite_content);
+	if (sprite == NULL)
+		return NSERROR_NOMEM;
+
+	error = content__init(&sprite->base, handler, imime_type, params,
+			llcache, fallback_charset, quirks);
+	if (error != NSERROR_OK) {
+		talloc_free(sprite);
+		return error;
+	}
+
+	*c = (struct content *) sprite;
+
+	return NSERROR_OK;
+}
+
+/**
+ * Convert a CONTENT_SPRITE for display.
+ *
+ * No conversion is necessary. We merely read the sprite dimensions.
+ */
+
+bool sprite_convert(struct content *c)
+{
+	sprite_content *sprite = (sprite_content *) c;
+	os_error *error;
+	int w, h;
+	union content_msg_data msg_data;
+	const char *source_data;
+	unsigned long source_size;
+	const void *sprite_data;
+	char title[100];
+
+	source_data = content__get_source_data(c, &source_size);
+
+	sprite_data = source_data - 4;
+	osspriteop_area *area = (osspriteop_area*) sprite_data;
+	sprite->data = area;
+
+	/* check for bad data */
+	if ((int)source_size + 4 != area->used) {
+		msg_data.error = messages_get("BadSprite");
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	error = xosspriteop_read_sprite_info(osspriteop_PTR,
+			(osspriteop_area *)0x100,
+			(osspriteop_id) ((char *) area + area->first),
+			&w, &h, NULL, NULL);
+	if (error) {
+		LOG(("xosspriteop_read_sprite_info: 0x%x: %s",
+				error->errnum, error->errmess));
+		msg_data.error = error->errmess;
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	c->width = w;
+	c->height = h;
+	snprintf(title, sizeof(title), messages_get("SpriteTitle"), c->width,
+				c->height, source_size);
+	content__set_title(c, title);
+	content_set_ready(c);
+	content_set_done(c);
+	/* Done: update status bar */
+	content_set_status(c, "");
+	return true;
+}
+
+
+/**
+ * Destroy a CONTENT_SPRITE and free all resources it owns.
+ */
+
+void sprite_destroy(struct content *c)
+{
+	/* do not free c->data.sprite.data at it is simply a pointer to
+	 * 4 bytes beforec->source_data. */
+}
+
+
+/**
+ * Redraw a CONTENT_SPRITE.
+ */
+
+bool sprite_redraw(struct content *c, int x, int y,
+		int width, int height, const struct rect *clip,
+		float scale, colour background_colour,
+		bool repeat_x, bool repeat_y)
+{
+	sprite_content *sprite = (sprite_content *) c;
+
+	if (plot.flush && !plot.flush())
+		return false;
+
+	return image_redraw(sprite->data,
+			ro_plot_origin_x + x * 2,
+			ro_plot_origin_y - y * 2,
+			width, height,
+			c->width,
+			c->height,
+			background_colour,
+			false, false, false,
+			IMAGE_PLOT_OS);
+}
+
+nserror sprite_clone(const struct content *old, struct content **newc)
+{
+	sprite_content *sprite;
+	nserror error;
+
+	sprite = talloc_zero(0, sprite_content);
+	if (sprite == NULL)
+		return NSERROR_NOMEM;
+
+	error = content__clone(old, &sprite->base);
+	if (error != NSERROR_OK) {
+		content_destroy(&sprite->base);
+		return error;
+	}
+
+	/* Simply rerun convert */
+	if (old->status == CONTENT_STATUS_READY ||
+			old->status == CONTENT_STATUS_DONE) {
+		if (sprite_convert(&sprite->base) == false) {
+			content_destroy(&sprite->base);
+			return NSERROR_CLONE_FAILED;
+		}
+	}
+
+	*newc = (struct content *) sprite;
+
+	return NSERROR_OK;
+}
+
+content_type sprite_content_type(lwc_string *mime_type)
+{
+	return CONTENT_IMAGE;
+}
+
+#endif
+
+
+/**
+ * Returns the bit depth of a sprite
+ *
+ * \param   s   sprite
+ * \return  depth in bpp
+ */
+
+byte sprite_bpp(const osspriteop_header *s)
+{
+	/* bit 31 indicates the presence of a full alpha channel 
+	 * rather than a binary mask */
+	int type = ((unsigned)s->mode >> osspriteop_TYPE_SHIFT) & 15;
+	byte bpp = 0;
+
+	switch (type) {
+		case osspriteop_TYPE_OLD:
+		{
+			bits psr;
+			int val;
+			if (!xos_read_mode_variable(s->mode, 
+					os_MODEVAR_LOG2_BPP, &val, &psr) &&
+					!(psr & _C))
+				bpp = 1 << val;
+		}
+		break;
+		case osspriteop_TYPE1BPP:  bpp = 1; break;
+		case osspriteop_TYPE2BPP:  bpp = 2; break;
+		case osspriteop_TYPE4BPP:  bpp = 4; break;
+		case osspriteop_TYPE8BPP:  bpp = 8; break;
+		case osspriteop_TYPE16BPP: bpp = 16; break;
+		case osspriteop_TYPE32BPP: bpp = 32; break;
+		case osspriteop_TYPE_CMYK: bpp = 32; break;
+	}
+	return bpp;
+}