static bool nsico_convert(struct content *c)
{
nsico_content *ico = (nsico_content *) c;
struct bmp_image *bmp;
bmp_result res;
union content_msg_data msg_data;
const char *data;
unsigned long size;
char *title;
/* set the ico data */
data = content__get_source_data(c, &size);
/* analyse the ico */
res = ico_analyse(ico->ico, size, (unsigned char *) data);
switch (res) {
case BMP_OK:
break;
case BMP_INSUFFICIENT_MEMORY:
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
case BMP_INSUFFICIENT_DATA:
case BMP_DATA_ERROR:
msg_data.error = messages_get("BadICO");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* Store our content width, height and calculate size */
c->width = ico->ico->width;
c->height = ico->ico->height;
c->size += (ico->ico->width * ico->ico->height * 4) + 16 + 44;
/* set title text */
title = messages_get_buff("ICOTitle",
nsurl_access_leaf(llcache_handle_get_url(c->llcache)),
c->width, c->height);
if (title != NULL) {
content__set_title(c, title);
free(title);
}
/* select largest icon to ensure one can be selected */
bmp = ico_find(ico->ico, 255, 255);
if (bmp == NULL) {
/* return error */
LOG("Failed to select icon");
return false;
}
content_set_ready(c);
content_set_done(c);
/* Done: update status bar */
content_set_status(c, "");
return true;
}
/**
* Convert a CONTENT_JPEG for display.
*/
static bool nsjpeg_convert(struct content *c)
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
jmp_buf setjmp_buffer;
struct jpeg_source_mgr source_mgr = { 0, 0,
nsjpeg_init_source, nsjpeg_fill_input_buffer,
nsjpeg_skip_input_data, jpeg_resync_to_restart,
nsjpeg_term_source };
union content_msg_data msg_data;
const char *data;
unsigned long size;
char title[100];
/* check image header is valid and get width/height */
data = content__get_source_data(c, &size);
cinfo.err = jpeg_std_error(&jerr);
jerr.error_exit = nsjpeg_error_exit;
jerr.output_message = nsjpeg_error_log;
if (setjmp(setjmp_buffer)) {
jpeg_destroy_decompress(&cinfo);
msg_data.error = nsjpeg_error_buffer;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
jpeg_create_decompress(&cinfo);
cinfo.client_data = &setjmp_buffer;
source_mgr.next_input_byte = (unsigned char *) data;
source_mgr.bytes_in_buffer = size;
cinfo.src = &source_mgr;
jpeg_read_header(&cinfo, TRUE);
cinfo.out_color_space = JCS_RGB;
cinfo.dct_method = JDCT_ISLOW;
jpeg_calc_output_dimensions(&cinfo);
c->width = cinfo.output_width;
c->height = cinfo.output_height;
c->size = c->width * c->height * 4;
jpeg_destroy_decompress(&cinfo);
image_cache_add(c, NULL, jpeg_cache_convert);
snprintf(title, sizeof(title), messages_get("JPEGTitle"),
c->width, c->height, size);
content__set_title(c, title);
content_set_ready(c);
content_set_done(c);
content_set_status(c, ""); /* Done: update status bar */
return true;
}
bool amiga_dt_picture_convert(struct content *c)
{
LOG(("amiga_dt_picture_convert"));
union content_msg_data msg_data;
int width, height;
char title[100];
const uint8 *data;
UBYTE *bm_buffer;
ULONG size;
Object *dto;
struct BitMapHeader *bmh;
unsigned int bm_flags = BITMAP_NEW;
int bm_format = PBPAFMT_RGBA;
/* This is only relevant for picture datatypes... */
data = (uint8 *)content__get_source_data(c, &size);
if(dto = NewDTObject(NULL,
DTA_SourceType, DTST_MEMORY,
DTA_SourceAddress, data,
DTA_SourceSize, size,
DTA_GroupID, GID_PICTURE,
PDTA_DestMode, PMODE_V43,
TAG_DONE))
{
if(GetDTAttrs(dto, PDTA_BitMapHeader, &bmh, TAG_DONE))
{
width = (int)bmh->bmh_Width;
height = (int)bmh->bmh_Height;
}
else return false;
DisposeDTObject(dto);
}
else return false;
c->width = width;
c->height = height;
c->size = width * height * 4;
image_cache_add(c, NULL, amiga_dt_picture_cache_convert);
/*
snprintf(title, sizeof(title), "image (%lux%lu, %lu bytes)",
width, height, size);
content__set_title(c, title);
*/
content_set_ready(c);
content_set_done(c);
content_set_status(c, "");
return true;
}
static bool nsbmp_convert(struct content *c)
{
nsbmp_content *bmp = (nsbmp_content *) c;
bmp_result res;
union content_msg_data msg_data;
uint32_t swidth;
const char *data;
unsigned long size;
char *title;
/* set the bmp data */
data = content__get_source_data(c, &size);
/* analyse the BMP */
res = bmp_analyse(bmp->bmp, size, (unsigned char *) data);
switch (res) {
case BMP_OK:
break;
case BMP_INSUFFICIENT_MEMORY:
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
case BMP_INSUFFICIENT_DATA:
case BMP_DATA_ERROR:
msg_data.error = messages_get("BadBMP");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* Store our content width and description */
c->width = bmp->bmp->width;
c->height = bmp->bmp->height;
swidth = bmp->bmp->bitmap_callbacks.bitmap_get_bpp(bmp->bmp->bitmap) *
bmp->bmp->width;
c->size += (swidth * bmp->bmp->height) + 16 + 44;
/* set title text */
title = messages_get_buff("BMPTitle",
nsurl_access_leaf(llcache_handle_get_url(c->llcache)),
c->width, c->height);
if (title != NULL) {
content__set_title(c, title);
free(title);
}
/* exit as a success */
bmp->bitmap = bmp->bmp->bitmap;
guit->bitmap->modified(bmp->bitmap);
content_set_ready(c);
content_set_done(c);
/* Done: update status bar */
content_set_status(c, "");
return true;
}
bool nsico_convert(struct content *c)
{
struct bmp_image *bmp;
bmp_result res;
ico_collection *ico;
union content_msg_data msg_data;
const char *data;
unsigned long size;
char title[100];
/* set the ico data */
ico = c->data.ico.ico;
data = content__get_source_data(c, &size);
/* analyse the ico */
res = ico_analyse(ico, size, (unsigned char *) data);
switch (res) {
case BMP_OK:
break;
case BMP_INSUFFICIENT_MEMORY:
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
case BMP_INSUFFICIENT_DATA:
case BMP_DATA_ERROR:
msg_data.error = messages_get("BadICO");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* Store our content width and description */
c->width = ico->width;
c->height = ico->height;
snprintf(title, sizeof(title), messages_get("ICOTitle"),
c->width, c->height, size);
content__set_title(c, title);
c->size += (ico->width * ico->height * 4) + 16 + 44;
/* exit as a success */
bmp = ico_find(c->data.ico.ico, 255, 255);
assert(bmp);
c->bitmap = bmp->bitmap;
bitmap_modified(c->bitmap);
c->status = CONTENT_STATUS_DONE;
/* Done: update status bar */
content_set_status(c, "");
return true;
}
nserror nscss_clone(const struct content *old, struct content **newc)
{
const nscss_content *old_css = (const nscss_content *) old;
nscss_content *new_css;
const char *data;
unsigned long size;
nserror error;
new_css = calloc(1, sizeof(nscss_content));
if (new_css == NULL)
return NSERROR_NOMEM;
/* Clone content */
error = content__clone(old, &new_css->base);
if (error != NSERROR_OK) {
content_destroy(&new_css->base);
return error;
}
/* Simply replay create/process/convert */
error = nscss_create_css_data(&new_css->data,
nsurl_access(content_get_url(&new_css->base)),
old_css->data.charset,
new_css->base.quirks,
nscss_content_done, new_css);
if (error != NSERROR_OK) {
content_destroy(&new_css->base);
return error;
}
data = content__get_source_data(&new_css->base, &size);
if (size > 0) {
if (nscss_process_data(&new_css->base, data, size) == false) {
content_destroy(&new_css->base);
return NSERROR_CLONE_FAILED;
}
}
if (old->status == CONTENT_STATUS_READY ||
old->status == CONTENT_STATUS_DONE) {
if (nscss_convert(&new_css->base) == false) {
content_destroy(&new_css->base);
return NSERROR_CLONE_FAILED;
}
}
*newc = (struct content *) new_css;
return NSERROR_OK;
}
bool sprite_convert(struct 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;
c->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);
c->status = CONTENT_STATUS_DONE;
/* Done: update status bar */
content_set_status(c, "");
return true;
}
bool draw_convert(struct content *c)
{
union content_msg_data msg_data;
const char *source_data;
unsigned long source_size;
const void *data;
os_box bbox;
os_error *error;
char title[100];
source_data = content__get_source_data(c, &source_size);
data = source_data;
/* BBox contents in Draw units (256*OS unit) */
error = xdrawfile_bbox(0, (drawfile_diagram *) data,
(int) source_size, 0, &bbox);
if (error) {
LOG(("xdrawfile_bbox: 0x%x: %s",
error->errnum, error->errmess));
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
if (bbox.x1 > bbox.x0 && bbox.y1 > bbox.y0) {
/* c->width & c->height stored as (OS units/2)
=> divide by 512 to convert from draw units */
c->width = ((bbox.x1 - bbox.x0) / 512);
c->height = ((bbox.y1 - bbox.y0) / 512);
}
else
/* invalid/undefined bounding box */
c->height = c->width = 0;
c->data.draw.x0 = bbox.x0;
c->data.draw.y0 = bbox.y0;
snprintf(title, sizeof(title), messages_get("DrawTitle"), c->width,
c->height, source_size);
content__set_title(c, title);
c->status = CONTENT_STATUS_DONE;
/* Done: update status bar */
content_set_status(c, "");
return true;
}
static nserror nspng_clone(const struct content *old_c, struct content **new_c)
{
nspng_content *clone_png_c;
nserror error;
const char *data;
unsigned long size;
clone_png_c = calloc(1, sizeof(nspng_content));
if (clone_png_c == NULL)
return NSERROR_NOMEM;
error = content__clone(old_c, &clone_png_c->base);
if (error != NSERROR_OK) {
content_destroy(&clone_png_c->base);
return error;
}
/* Simply replay create/process/convert */
error = nspng_create_png_data(clone_png_c);
if (error != NSERROR_OK) {
content_destroy(&clone_png_c->base);
return error;
}
data = content__get_source_data(&clone_png_c->base, &size);
if (size > 0) {
if (nspng_process_data(&clone_png_c->base, data, size) == false) {
content_destroy(&clone_png_c->base);
return NSERROR_NOMEM;
}
}
if ((old_c->status == CONTENT_STATUS_READY) ||
(old_c->status == CONTENT_STATUS_DONE)) {
if (nspng_convert(&clone_png_c->base) == false) {
content_destroy(&clone_png_c->base);
return NSERROR_CLONE_FAILED;
}
}
*new_c = (struct content *)clone_png_c;
return NSERROR_OK;
}
static struct bitmap *amiga_dt_picture_cache_convert(struct content *c)
{
LOG(("amiga_dt_picture_cache_convert"));
union content_msg_data msg_data;
const uint8 *data;
UBYTE *bm_buffer;
ULONG size;
Object *dto;
struct bitmap *bitmap;
unsigned int bm_flags = BITMAP_NEW;
int bm_format = PBPAFMT_RGBA;
/* This is only relevant for picture datatypes... */
data = (uint8 *)content__get_source_data(c, &size);
if(dto = NewDTObject(NULL,
DTA_SourceType, DTST_MEMORY,
DTA_SourceAddress, data,
DTA_SourceSize, size,
DTA_GroupID, GID_PICTURE,
PDTA_DestMode, PMODE_V43,
TAG_DONE))
{
bitmap = bitmap_create(c->width, c->height, bm_flags);
if (!bitmap) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return NULL;
}
bm_buffer = bitmap_get_buffer(bitmap);
IDoMethod(dto, PDTM_READPIXELARRAY,
bm_buffer, bm_format, bitmap_get_rowstride(bitmap),
0, 0, c->width, c->height);
DisposeDTObject(dto);
}
else return NULL;
return bitmap;
}
static nserror rsvg_clone(const struct content *old, struct content **newc)
{
rsvg_content *svg;
nserror error;
const char *data;
unsigned long size;
svg = talloc_zero(0, rsvg_content);
if (svg == NULL)
return NSERROR_NOMEM;
error = content__clone(old, &svg->base);
if (error != NSERROR_OK) {
content_destroy(&svg->base);
return error;
}
/* Simply replay create/process/convert */
error = rsvg_create_svg_data(svg);
if (error != NSERROR_OK) {
content_destroy(&svg->base);
return error;
}
data = content__get_source_data(&svg->base, &size);
if (size > 0) {
if (rsvg_process_data(&svg->base, data, size) == false) {
content_destroy(&svg->base);
return NSERROR_NOMEM;
}
}
if (old->status == CONTENT_STATUS_READY ||
old->status == CONTENT_STATUS_DONE) {
if (rsvg_convert(&svg->base) == false) {
content_destroy(&svg->base);
return NSERROR_CLONE_FAILED;
}
}
*newc = (struct content *) svg;
return NSERROR_OK;
}
Object *amiga_dt_picture_newdtobject(struct amiga_dt_picture_content *adt)
{
const uint8 *data;
ULONG size;
if(adt->dto == NULL) {
data = (uint8 *)content__get_source_data((struct content *)adt, &size);
adt->dto = NewDTObject(NULL,
DTA_SourceType, DTST_MEMORY,
DTA_SourceAddress, data,
DTA_SourceSize, size,
DTA_GroupID, GID_PICTURE,
PDTA_DestMode, PMODE_V43,
TAG_DONE);
}
return adt->dto;
}
bool draw_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, colour background_colour)
{
os_trfm matrix;
const char *source_data;
unsigned long source_size;
const void *data;
os_error *error;
if (plot.flush && !plot.flush())
return false;
if (!c->width || !c->height)
return false;
source_data = content__get_source_data(c, &source_size);
data = source_data;
/* Scaled image. Transform units (65536*OS units) */
matrix.entries[0][0] = width * 65536 / c->width;
matrix.entries[0][1] = 0;
matrix.entries[1][0] = 0;
matrix.entries[1][1] = height * 65536 / c->height;
/* Draw units. (x,y) = bottom left */
matrix.entries[2][0] = ro_plot_origin_x * 256 + x * 512 -
c->data.draw.x0 * width / c->width;
matrix.entries[2][1] = ro_plot_origin_y * 256 - (y + height) * 512 -
c->data.draw.y0 * height / c->height;
error = xdrawfile_render(0, (drawfile_diagram *) data,
(int) source_size, &matrix, 0, 0);
if (error) {
LOG(("xdrawfile_render: 0x%x: %s",
error->errnum, error->errmess));
return false;
}
return true;
}
char *amiga_dt_picture_datatype(struct content *c)
{
const uint8 *data;
ULONG size;
struct DataType *dt;
char *filetype = NULL;
data = (uint8 *)content__get_source_data(c, &size);
if(dt = ObtainDataType(DTST_MEMORY, NULL,
DTA_SourceAddress, data,
DTA_SourceSize, size,
DTA_GroupID, GID_PICTURE,
TAG_DONE)) {
filetype = strdup(dt->dtn_Header->dth_Name);
ReleaseDataType(dt);
}
if(filetype == NULL) filetype = strdup("DataTypes");
return filetype;
}
static void svg_reformat(struct content *c, int width, int height)
{
svg_content *svg = (svg_content *) c;
const char *source_data;
unsigned long source_size;
assert(svg->diagram);
/* Avoid reformats to same width/height as we already reformatted to */
if (width != svg->current_width || height != svg->current_height) {
source_data = content__get_source_data(c, &source_size);
svgtiny_parse(svg->diagram, source_data, source_size,
nsurl_access(content_get_url(c)),
width, height);
svg->current_width = width;
svg->current_height = height;
}
c->width = svg->diagram->width;
c->height = svg->diagram->height;
}
static bool nssprite_convert(struct content *c)
{
nssprite_content *nssprite = (nssprite_content *) c;
union content_msg_data msg_data;
struct rosprite_mem_context* ctx;
const char *data;
unsigned long size;
char *title;
data = content__get_source_data(c, &size);
ERRCHK(rosprite_create_mem_context((uint8_t *) data, size, &ctx));
struct rosprite_area* sprite_area;
ERRCHK(rosprite_load(rosprite_mem_reader, ctx, &sprite_area));
rosprite_destroy_mem_context(ctx);
nssprite->sprite_area = sprite_area;
assert(sprite_area->sprite_count > 0);
struct rosprite* sprite = sprite_area->sprites[0];
nssprite->bitmap = guit->bitmap->create(sprite->width, sprite->height, BITMAP_NEW);
if (!nssprite->bitmap) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
uint32_t* imagebuf = (uint32_t *)guit->bitmap->get_buffer(nssprite->bitmap);
if (!imagebuf) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
unsigned char *spritebuf = (unsigned char *)sprite->image;
/* reverse byte order of each word */
for (uint32_t y = 0; y < sprite->height; y++) {
for (uint32_t x = 0; x < sprite->width; x++) {
int offset = 4 * (y * sprite->width + x);
*imagebuf = (spritebuf[offset] << 24) |
(spritebuf[offset + 1] << 16) |
(spritebuf[offset + 2] << 8) |
(spritebuf[offset + 3]);
imagebuf++;
}
}
c->width = sprite->width;
c->height = sprite->height;
/* set title text */
title = messages_get_buff("SpriteTitle",
nsurl_access_leaf(llcache_handle_get_url(c->llcache)),
c->width, c->height);
if (title != NULL) {
content__set_title(c, title);
free(title);
}
guit->bitmap->modified(nssprite->bitmap);
content_set_ready(c);
content_set_done(c);
content_set_status(c, ""); /* Done: update status bar */
return true;
}
/* exported interface documented in content/content.h */
const char *content_get_source_data(hlcache_handle *h, unsigned long *size)
{
return content__get_source_data(hlcache_handle_get_content(h), size);
}
bool artworks_convert(struct content *c)
{
artworks_content *aw = (artworks_content *) c;
union content_msg_data msg_data;
const char *source_data;
unsigned long source_size;
void *init_workspace;
void *init_routine;
os_error *error;
int used = -1; /* slightly better with older OSLib versions */
char *title;
/* check whether AWViewer has been seen and we can therefore
locate the ArtWorks rendering modules */
xos_read_var_val_size("Alias$LoadArtWorksModules", 0, os_VARTYPE_STRING,
&used, NULL, NULL);
if (used >= 0) {
LOG("Alias$LoadArtWorksModules not defined");
msg_data.error = messages_get("AWNotSeen");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* load the modules, or do nothing if they're already loaded */
error = xos_cli("LoadArtWorksModules");
if (error) {
LOG("xos_cli: 0x%x: %s", error->errnum, error->errmess);
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* lookup the addresses of the init and render routines */
error = (os_error*)_swix(AWRender_FileInitAddress, _OUT(0) | _OUT(1),
&init_routine, &init_workspace);
if (error) {
LOG("AWRender_FileInitAddress: 0x%x: %s", error->errnum, error->errmess);
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
error = (os_error*)_swix(AWRender_RenderAddress, _OUT(0) | _OUT(1),
&aw->render_routine,
&aw->render_workspace);
if (error) {
LOG("AWRender_RenderAddress: 0x%x: %s", error->errnum, error->errmess);
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
source_data = content__get_source_data(c, &source_size);
/* initialise (convert file to new format if required) */
error = awrender_init(&source_data, &source_size,
init_routine, init_workspace);
if (error) {
LOG("awrender_init: 0x%x : %s", error->errnum, error->errmess);
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
error = (os_error*)_swix(AWRender_DocBounds,
_IN(0) | _OUT(2) | _OUT(3) | _OUT(4) | _OUT(5),
source_data,
&aw->x0,
&aw->y0,
&aw->x1,
&aw->y1);
if (error) {
LOG("AWRender_DocBounds: 0x%x: %s", error->errnum, error->errmess);
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
LOG("bounding box: %d,%d,%d,%d", aw->x0, aw->y0, aw->x1, aw->y1);
/* create the resizable workspace required by the
ArtWorksRenderer rendering routine */
aw->size = INITIAL_BLOCK_SIZE;
aw->block = malloc(INITIAL_BLOCK_SIZE);
if (!aw->block) {
LOG("failed to create block for ArtworksRenderer");
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
c->width = (aw->x1 - aw->x0) / 512;
c->height = (aw->y1 - aw->y0) / 512;
title = messages_get_buff("ArtWorksTitle",
nsurl_access_leaf(llcache_handle_get_url(c->llcache)),
c->width, c->height);
if (title != NULL) {
content__set_title(c, title);
free(title);
}
content_set_ready(c);
content_set_done(c);
/* Done: update status bar */
content_set_status(c, "");
return true;
}
bool artworks_redraw(struct content *c, struct content_redraw_data *data,
const struct rect *clip, const struct redraw_context *ctx)
{
static const ns_os_vdu_var_list vars = {
os_MODEVAR_XEIG_FACTOR,
{
os_MODEVAR_YEIG_FACTOR,
os_MODEVAR_LOG2_BPP,
os_VDUVAR_END_LIST
}
};
artworks_content *aw = (artworks_content *) c;
struct awinfo_block info;
const char *source_data;
unsigned long source_size;
os_error *error;
os_trfm matrix;
int vals[24];
int clip_x0 = clip->x0;
int clip_y0 = clip->y0;
int clip_x1 = clip->x1;
int clip_y1 = clip->y1;
if (ctx->plot->flush && !ctx->plot->flush())
return false;
/* pick up render addresses again in case they've changed
(eg. newer AWRender module loaded since we first loaded this file) */
(void)_swix(AWRender_RenderAddress, _OUT(0) | _OUT(1),
&aw->render_routine,
&aw->render_workspace);
/* Scaled image. Transform units (65536*OS units) */
matrix.entries[0][0] = data->width * 65536 / c->width;
matrix.entries[0][1] = 0;
matrix.entries[1][0] = 0;
matrix.entries[1][1] = data->height * 65536 / c->height;
/* Draw units. (x,y) = bottom left */
matrix.entries[2][0] = ro_plot_origin_x * 256 + data->x * 512 -
aw->x0 * data->width / c->width;
matrix.entries[2][1] = ro_plot_origin_y * 256 -
(data->y + data->height) * 512 -
aw->y0 * data->height / c->height;
info.ditherx = ro_plot_origin_x;
info.dithery = ro_plot_origin_y;
clip_x0 -= data->x;
clip_y0 -= data->y;
clip_x1 -= data->x;
clip_y1 -= data->y;
if (data->scale == 1.0) {
info.clip_x0 = (clip_x0 * 512) + aw->x0 - 511;
info.clip_y0 = ((c->height - clip_y1) * 512) + aw->y0 - 511;
info.clip_x1 = (clip_x1 * 512) + aw->x0 + 511;
info.clip_y1 = ((c->height - clip_y0) * 512) + aw->y0 + 511;
}
else {
info.clip_x0 = (clip_x0 * 512 / data->scale) + aw->x0 - 511;
info.clip_y0 = ((c->height - (clip_y1 / data->scale)) * 512) +
aw->y0 - 511;
info.clip_x1 = (clip_x1 * 512 / data->scale) + aw->x0 + 511;
info.clip_y1 = ((c->height - (clip_y0 / data->scale)) * 512) +
aw->y0 + 511;
}
info.print_lowx = 0;
info.print_lowy = 0;
info.print_handle = 0;
info.bgcolour = 0x20000000 | data->background_colour;
error = xos_read_vdu_variables(PTR_OS_VDU_VAR_LIST(&vars), vals);
if (error) {
LOG("xos_read_vdu_variables: 0x%x: %s", error->errnum, error->errmess);
return false;
}
error = xwimp_read_palette((os_palette*)&vals[3]);
if (error) {
LOG("xwimp_read_palette: 0x%x: %s", error->errnum, error->errmess);
return false;
}
source_data = content__get_source_data(c, &source_size);
error = awrender_render(source_data,
&info,
&matrix,
vals,
&aw->block,
&aw->size,
110, /* fully anti-aliased */
0,
source_size,
aw->render_routine,
aw->render_workspace);
if (error) {
LOG("awrender_render: 0x%x: %s", error->errnum, error->errmess);
return false;
}
return true;
}
/** PNG content to bitmap conversion.
*
* This routine generates a bitmap object from a PNG image content
*/
static struct bitmap *
png_cache_convert(struct content *c)
{
png_structp png_ptr;
png_infop info_ptr;
png_infop end_info_ptr;
volatile struct bitmap *bitmap = NULL;
struct png_cache_read_data_s png_cache_read_data;
png_uint_32 width, height;
volatile png_bytep *row_pointers = NULL;
png_cache_read_data.data =
content__get_source_data(c, &png_cache_read_data.size);
if ((png_cache_read_data.data == NULL) ||
(png_cache_read_data.size <= 8)) {
return NULL;
}
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL,
nspng_error, nspng_warning);
if (png_ptr == NULL) {
return NULL;
}
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
png_destroy_read_struct(&png_ptr, NULL, NULL);
return NULL;
}
end_info_ptr = png_create_info_struct(png_ptr);
if (end_info_ptr == NULL) {
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
return NULL;
}
/* setup error exit path */
if (setjmp(png_jmpbuf(png_ptr))) {
/* cleanup and bail */
goto png_cache_convert_error;
}
/* read from a buffer instead of stdio */
png_set_read_fn(png_ptr, &png_cache_read_data, png_cache_read_fn);
/* ensure the png info structure is populated */
png_read_info(png_ptr, info_ptr);
/* setup output transforms */
nspng_setup_transforms(png_ptr, info_ptr);
width = png_get_image_width(png_ptr, info_ptr);
height = png_get_image_height(png_ptr, info_ptr);
/* Claim the required memory for the converted PNG */
bitmap = bitmap_create(width, height, BITMAP_NEW);
if (bitmap == NULL) {
/* cleanup and bail */
goto png_cache_convert_error;
}
row_pointers = calc_row_pointers((struct bitmap *) bitmap);
if (row_pointers != NULL) {
png_read_image(png_ptr, (png_bytep *) row_pointers);
}
png_cache_convert_error:
/* cleanup png read */
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info_ptr);
free((png_bytep *) row_pointers);
if (bitmap != NULL)
bitmap_modified((struct bitmap *)bitmap);
return (struct bitmap *)bitmap;
}
static struct bitmap *
jpeg_cache_convert(struct content *c)
{
uint8_t *source_data; /* Jpeg source data */
unsigned long source_size; /* length of Jpeg source data */
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
jmp_buf setjmp_buffer;
unsigned int height;
unsigned int width;
struct bitmap * volatile bitmap = NULL;
uint8_t * volatile pixels = NULL;
size_t rowstride;
struct jpeg_source_mgr source_mgr = {
0,
0,
nsjpeg_init_source,
nsjpeg_fill_input_buffer,
nsjpeg_skip_input_data,
jpeg_resync_to_restart,
nsjpeg_term_source };
/* obtain jpeg source data and perfom minimal sanity checks */
source_data = (uint8_t *)content__get_source_data(c, &source_size);
if ((source_data == NULL) ||
(source_size < MIN_JPEG_SIZE)) {
return NULL;
}
/* setup a JPEG library error handler */
cinfo.err = jpeg_std_error(&jerr);
jerr.error_exit = nsjpeg_error_exit;
jerr.output_message = nsjpeg_error_log;
/* handler for fatal errors during decompression */
if (setjmp(setjmp_buffer)) {
jpeg_destroy_decompress(&cinfo);
return bitmap;
}
jpeg_create_decompress(&cinfo);
cinfo.client_data = &setjmp_buffer;
/* setup data source */
source_mgr.next_input_byte = source_data;
source_mgr.bytes_in_buffer = source_size;
cinfo.src = &source_mgr;
/* read JPEG header information */
jpeg_read_header(&cinfo, TRUE);
/* set output processing parameters */
cinfo.out_color_space = JCS_RGB;
cinfo.dct_method = JDCT_ISLOW;
/* commence the decompression, output parameters now valid */
jpeg_start_decompress(&cinfo);
width = cinfo.output_width;
height = cinfo.output_height;
/* create opaque bitmap (jpegs cannot be transparent) */
bitmap = bitmap_create(width, height, BITMAP_NEW | BITMAP_OPAQUE);
if (bitmap == NULL) {
/* empty bitmap could not be created */
jpeg_destroy_decompress(&cinfo);
return NULL;
}
pixels = bitmap_get_buffer(bitmap);
if (pixels == NULL) {
/* bitmap with no buffer available */
bitmap_destroy(bitmap);
jpeg_destroy_decompress(&cinfo);
return NULL;
}
/* Convert scanlines from jpeg into bitmap */
rowstride = bitmap_get_rowstride(bitmap);
do {
JSAMPROW scanlines[1];
#if RGB_RED != 0 || RGB_GREEN != 1 || RGB_BLUE != 2 || RGB_PIXELSIZE != 4
int i;
scanlines[0] = (JSAMPROW) (pixels +
rowstride * cinfo.output_scanline);
jpeg_read_scanlines(&cinfo, scanlines, 1);
/* expand to RGBA */
for (i = width - 1; 0 <= i; i--) {
int r = scanlines[0][i * RGB_PIXELSIZE + RGB_RED];
int g = scanlines[0][i * RGB_PIXELSIZE + RGB_GREEN];
int b = scanlines[0][i * RGB_PIXELSIZE + RGB_BLUE];
scanlines[0][i * 4 + 0] = r;
scanlines[0][i * 4 + 1] = g;
scanlines[0][i * 4 + 2] = b;
scanlines[0][i * 4 + 3] = 0xff;
}
#else
scanlines[0] = (JSAMPROW) (pixels +
rowstride * cinfo.output_scanline);
jpeg_read_scanlines(&cinfo, scanlines, 1);
#endif
} while (cinfo.output_scanline != cinfo.output_height);
bitmap_modified(bitmap);
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
return bitmap;
}
static bool nsgif_convert(struct content *c)
{
nsgif_content *gif = (nsgif_content *) c;
int res;
union content_msg_data msg_data;
const char *data;
unsigned long size;
char *title;
/* Get the animation */
data = content__get_source_data(c, &size);
/* Initialise the GIF */
do {
res = gif_initialise(gif->gif, size, (unsigned char *) data);
if (res != GIF_OK && res != GIF_WORKING &&
res != GIF_INSUFFICIENT_FRAME_DATA) {
switch (res) {
case GIF_FRAME_DATA_ERROR:
case GIF_INSUFFICIENT_DATA:
case GIF_DATA_ERROR:
msg_data.error = messages_get("BadGIF");
break;
case GIF_INSUFFICIENT_MEMORY:
msg_data.error = messages_get("NoMemory");
break;
}
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
} while (res != GIF_OK && res != GIF_INSUFFICIENT_FRAME_DATA);
/* Abort on bad GIFs */
if ((gif->gif->frame_count_partial == 0) || (gif->gif->width == 0) ||
(gif->gif->height == 0)) {
msg_data.error = messages_get("BadGIF");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* Store our content width, height and calculate size */
c->width = gif->gif->width;
c->height = gif->gif->height;
c->size += (gif->gif->width * gif->gif->height * 4) + 16 + 44;
/* set title text */
title = messages_get_buff("GIFTitle",
nsurl_access_leaf(llcache_handle_get_url(c->llcache)),
c->width, c->height);
if (title != NULL) {
content__set_title(c, title);
free(title);
}
/* Schedule the animation if we have one */
gif->current_frame = 0;
if (gif->gif->frame_count_partial > 1)
guit->browser->schedule(gif->gif->frames[0].frame_delay * 10,
nsgif_animate,
c);
/* Exit as a success */
content_set_ready(c);
content_set_done(c);
/* Done: update status bar */
content_set_status(c, "");
return true;
}
