static void
xps_add_fixed_document(xps_context_t *ctx, char *name)
{
xps_document_t *fixdoc;
/* Check for duplicates first */
for (fixdoc = ctx->first_fixdoc; fixdoc; fixdoc = fixdoc->next)
if (!strcmp(fixdoc->name, name))
return;
if_debug1m('|', ctx->memory, "doc: adding fixdoc %s\n", name);
fixdoc = xps_alloc(ctx, sizeof(xps_document_t));
if (!fixdoc) {
gs_throw(gs_error_VMerror, "out of memory: xps_add_fixed_document\n");
return;
}
fixdoc->name = xps_strdup(ctx, name);
fixdoc->next = NULL;
if (!ctx->first_fixdoc)
{
ctx->first_fixdoc = fixdoc;
ctx->last_fixdoc = fixdoc;
}
else
{
ctx->last_fixdoc->next = fixdoc;
ctx->last_fixdoc = fixdoc;
}
}
static void
xps_add_fixed_page(xps_context_t *ctx, char *name, int width, int height)
{
xps_page_t *page;
/* Check for duplicates first */
for (page = ctx->first_page; page; page = page->next)
if (!strcmp(page->name, name))
return;
if_debug1m('|', ctx->memory, "doc: adding page %s\n", name);
page = xps_alloc(ctx, sizeof(xps_page_t));
if (!page) {
gs_throw(gs_error_VMerror, "out of memory: xps_add_fixed_page\n");
return;
}
page->name = xps_strdup(ctx, name);
page->width = width;
page->height = height;
page->next = NULL;
if (!ctx->first_page)
{
ctx->first_page = page;
ctx->last_page = page;
}
else
{
ctx->last_page->next = page;
ctx->last_page = page;
}
}
static void
on_text(void *zp, char *buf, int len)
{
xps_parser_t *parser = zp;
xps_context_t *ctx = parser->ctx;
char *atts[3];
int i;
if (parser->error)
return;
for (i = 0; i < len; i++)
{
if (!is_xml_space(buf[i]))
{
char *tmp = xps_alloc(ctx, len + 1);
if (!tmp)
{
parser->error = "out of memory";
return;
}
atts[0] = "";
atts[1] = tmp;
atts[2] = NULL;
memcpy(tmp, buf, len);
tmp[len] = 0;
on_open_tag(zp, "", atts);
on_close_tag(zp, "");
xps_free(ctx, tmp);
return;
}
}
}
xps_font_t *
xps_new_font(xps_context_t *ctx, byte *buf, int buflen, int index)
{
xps_font_t *font;
int code;
font = xps_alloc(ctx, sizeof(xps_font_t));
if (!font)
{
gs_throw(gs_error_VMerror, "out of memory");
return NULL;
}
font->data = buf;
font->length = buflen;
font->font = NULL;
font->subfontid = index;
font->cmaptable = 0;
font->cmapsubcount = 0;
font->cmapsubtable = 0;
font->usepua = 0;
font->cffdata = 0;
font->cffend = 0;
font->gsubrs = 0;
font->subrs = 0;
font->charstrings = 0;
if (memcmp(font->data, "OTTO", 4) == 0)
code = xps_init_postscript_font(ctx, font);
else if (memcmp(font->data, "\0\1\0\0", 4) == 0)
code = xps_init_truetype_font(ctx, font);
else if (memcmp(font->data, "true", 4) == 0)
code = xps_init_truetype_font(ctx, font);
else if (memcmp(font->data, "ttcf", 4) == 0)
code = xps_init_truetype_font(ctx, font);
else
{
xps_free_font(ctx, font);
gs_throw(-1, "not an opentype font");
return NULL;
}
if (code < 0)
{
xps_free_font(ctx, font);
gs_rethrow(-1, "cannot init font");
return NULL;
}
xps_load_sfnt_cmap(font);
return font;
}
static void
xps_decode_jpegxr_block(jxr_image_t image, int mx, int my, int *data)
{
struct state *state = jxr_get_user_data(image);
xps_context_t *ctx = state->ctx;
xps_image_t *output = state->output;
int depth;
unsigned char *p;
int x, y, k;
if (!output->samples)
{
output->width = jxr_get_IMAGE_WIDTH(image);
output->height = jxr_get_IMAGE_HEIGHT(image);
output->comps = jxr_get_IMAGE_CHANNELS(image);
output->hasalpha = jxr_get_ALPHACHANNEL_FLAG(image);
output->bits = 8;
output->stride = output->width * output->comps;
output->samples = xps_alloc(ctx, output->stride * output->height);
if (!output->samples) {
gs_throw(gs_error_VMerror, "out of memory: output->samples.\n");
return;
}
switch (output->comps)
{
default:
case 1: output->colorspace = ctx->gray; break;
case 3: output->colorspace = ctx->srgb; break;
case 4: output->colorspace = ctx->cmyk; break;
}
}
depth = jxr_get_OUTPUT_BITDEPTH(image);
my = my * 16;
mx = mx * 16;
for (y = 0; y < 16; y++)
{
if (my + y >= output->height)
return;
p = output->samples + (my + y) * output->stride + mx * output->comps;
for (x = 0; x < 16; x++)
{
if (mx + x >= output->width)
data += output->comps;
else
for (k = 0; k < output->comps; k++)
*p++ = scale_bits(depth, *data++);
}
}
}
xps_part_t *
xps_new_part(xps_context_t *ctx, char *name, int size)
{
xps_part_t *part;
part = xps_alloc(ctx, sizeof(xps_part_t));
if (!part) {
gs_throw(gs_error_VMerror, "out of memory: xps_new_part\n");
return NULL;
}
part->name = xps_strdup(ctx, name);
part->size = size;
part->data = xps_alloc(ctx, size);
if (!part->data) {
xps_free(ctx, part);
gs_throw(gs_error_VMerror, "out of memory: xps_new_part\n");
return NULL;
}
return part;
}
static void
xps_decode_jpegxr_alpha_block(jxr_image_t image, int mx, int my, int *data)
{
struct state *state = jxr_get_user_data(image);
xps_context_t *ctx = state->ctx;
xps_image_t *output = state->output;
int depth;
unsigned char *p;
int x, y, k;
if (!output->alpha)
{
output->alpha = xps_alloc(ctx, output->width * output->height);
if (!output->alpha) {
gs_throw(gs_error_VMerror, "out of memory: output->alpha.\n");
return;
}
}
depth = jxr_get_OUTPUT_BITDEPTH(image);
my = my * 16;
mx = mx * 16;
for (y = 0; y < 16; y++)
{
if (my + y >= output->height)
return;
p = output->alpha + (my + y) * output->width + mx;
for (x = 0; x < 16; x++)
{
if (mx + x >= output->width)
data ++;
else
*p++ = scale_bits(depth, *data++);
}
}
}
int
xps_decode_jpeg(xps_context_t *ctx, byte *rbuf, int rlen, xps_image_t *image)
{
jpeg_decompress_data jddp;
stream_DCT_state state;
stream_cursor_read rp;
stream_cursor_write wp;
int code;
int wlen;
byte *wbuf;
jpeg_saved_marker_ptr curr_marker;
s_init_state((stream_state*)&state, &s_DCTD_template, ctx->memory);
state.report_error = xps_report_error;
s_DCTD_template.set_defaults((stream_state*)&state);
state.jpeg_memory = ctx->memory;
state.data.decompress = &jddp;
jddp.templat = s_DCTD_template;
jddp.memory = ctx->memory;
jddp.scanline_buffer = NULL;
if ((code = gs_jpeg_create_decompress(&state)) < 0)
return gs_throw(-1, "cannot gs_jpeg_create_decompress");
s_DCTD_template.init((stream_state*)&state);
rp.ptr = rbuf - 1;
rp.limit = rbuf + rlen - 1;
/* read the header only by not having a write buffer */
wp.ptr = 0;
wp.limit = 0;
/* Set up to save the ICC marker APP2.
* According to the spec we should be getting APP1 APP2 and APP13.
* Library gets APP0 and APP14. */
jpeg_save_markers(&(jddp.dinfo), 0xe2, 0xFFFF);
code = s_DCTD_template.process((stream_state*)&state, &rp, &wp, true);
if (code != 1)
return gs_throw(-1, "premature EOF or error in jpeg");
/* Check if we had an ICC profile */
curr_marker = jddp.dinfo.marker_list;
while (curr_marker != NULL)
{
if (curr_marker->marker == 0xe2)
{
/* Found ICC profile. Create a buffer and copy over now.
* Strip JPEG APP2 14 byte header */
image->profilesize = curr_marker->data_length - 14;
image->profile = xps_alloc(ctx, image->profilesize);
if (image->profile)
{
/* If we can't create it, just ignore */
memcpy(image->profile, &(curr_marker->data[14]), image->profilesize);
}
break;
}
curr_marker = curr_marker->next;
}
image->width = jddp.dinfo.output_width;
image->height = jddp.dinfo.output_height;
image->comps = jddp.dinfo.output_components;
image->bits = 8;
image->stride = image->width * image->comps;
if (image->comps == 1)
image->colorspace = ctx->gray;
if (image->comps == 3)
image->colorspace = ctx->srgb;
if (image->comps == 4)
image->colorspace = ctx->cmyk;
if (jddp.dinfo.density_unit == 1)
{
image->xres = jddp.dinfo.X_density;
image->yres = jddp.dinfo.Y_density;
}
else if (jddp.dinfo.density_unit == 2)
{
image->xres = (int)(jddp.dinfo.X_density * 2.54 + 0.5);
image->yres = (int)(jddp.dinfo.Y_density * 2.54 + 0.5);
}
else
{
image->xres = 96;
image->yres = 96;
}
wlen = image->stride * image->height;
wbuf = xps_alloc(ctx, wlen);
if (!wbuf)
return gs_throw1(gs_error_VMerror, "out of memory allocating samples: %d", wlen);
image->samples = wbuf;
wp.ptr = wbuf - 1;
wp.limit = wbuf + wlen - 1;
code = s_DCTD_template.process((stream_state*)&state, &rp, &wp, true);
if (code != EOFC)
return gs_throw1(-1, "error in jpeg (code = %d)", code);
gs_jpeg_destroy(&state);
return gs_okay;
}
int
xps_decode_jpegxr(xps_context_t *ctx, byte *buf, int len, xps_image_t *output)
{
FILE *file;
char *name = xps_alloc(ctx, gp_file_name_sizeof);
struct state state;
jxr_container_t container;
jxr_image_t image;
int offset, alpha_offset;
int rc;
if (!name) {
return gs_throw(gs_error_VMerror, "cannot allocate scratch file name buffer");
}
memset(output, 0, sizeof(*output));
file = gp_open_scratch_file(ctx->memory, "jpegxr-scratch-", name, "wb+");
if (!file) {
xps_free(ctx, name);
return gs_throw(gs_error_invalidfileaccess, "cannot open scratch file");
}
rc = fwrite(buf, 1, len, file);
if (rc != len) {
xps_free(ctx, name);
return gs_throw(gs_error_invalidfileaccess, "cannot write to scratch file");
}
fseek(file, 0, SEEK_SET);
container = jxr_create_container();
rc = jxr_read_image_container(container, file);
if (rc < 0) {
xps_free(ctx, name);
return gs_throw1(-1, "jxr_read_image_container: %s", jxr_error_string(rc));
}
offset = jxrc_image_offset(container, 0);
alpha_offset = jxrc_alpha_offset(container, 0);
output->xres = jxrc_width_resolution(container, 0);
output->yres = jxrc_height_resolution(container, 0);
image = jxr_create_input();
jxr_set_PROFILE_IDC(image, 111);
jxr_set_LEVEL_IDC(image, 255);
jxr_set_pixel_format(image, jxrc_image_pixelformat(container, 0));
jxr_set_container_parameters(image,
jxrc_image_pixelformat(container, 0),
jxrc_image_width(container, 0),
jxrc_image_height(container, 0),
jxrc_alpha_offset(container, 0),
jxrc_image_band_presence(container, 0),
jxrc_alpha_band_presence(container, 0), 0);
jxr_set_block_output(image, xps_decode_jpegxr_block);
state.ctx = ctx;
state.output = output;
jxr_set_user_data(image, &state);
fseek(file, offset, SEEK_SET);
rc = jxr_read_image_bitstream(image, file);
if (rc < 0) {
xps_free(ctx, name);
return gs_throw1(-1, "jxr_read_image_bitstream: %s", jxr_error_string(rc));
}
jxr_destroy(image);
if (alpha_offset > 0)
{
image = jxr_create_input();
jxr_set_PROFILE_IDC(image, 111);
jxr_set_LEVEL_IDC(image, 255);
jxr_set_pixel_format(image, jxrc_image_pixelformat(container, 0));
jxr_set_container_parameters(image,
jxrc_image_pixelformat(container, 0),
jxrc_image_width(container, 0),
jxrc_image_height(container, 0),
jxrc_alpha_offset(container, 0),
jxrc_image_band_presence(container, 0),
jxrc_alpha_band_presence(container, 0), 0);
jxr_set_block_output(image, xps_decode_jpegxr_alpha_block);
state.ctx = ctx;
state.output = output;
jxr_set_user_data(image, &state);
fseek(file, alpha_offset, SEEK_SET);
rc = jxr_read_image_bitstream(image, file);
if (rc < 0) {
xps_free(ctx, name);
return gs_throw1(-1, "jxr_read_image_bitstream: %s", jxr_error_string(rc));
}
jxr_destroy(image);
}
jxr_destroy_container(container);
fclose(file);
unlink(name);
xps_free(ctx, name);
return gs_okay;
}
static void
on_open_tag(void *zp, const char *ns_name, const char **atts)
{
xps_parser_t *parser = zp;
xps_context_t *ctx = parser->ctx;
xps_item_t *item;
xps_item_t *tail;
int namelen;
int attslen;
int textlen;
const char *name;
char *p;
int i;
if (parser->error)
return;
/* check namespace */
name = NULL;
p = strstr(ns_name, NS_XPS);
if (p == ns_name)
{
name = strchr(ns_name, ' ') + 1;
}
p = strstr(ns_name, NS_MC);
if (p == ns_name)
{
name = strchr(ns_name, ' ') + 1;
}
p = strstr(ns_name, NS_OXPS);
if (p == ns_name)
{
name = strchr(ns_name, ' ') + 1;
}
if (!name)
{
dmprintf1(ctx->memory, "unknown namespace: %s\n", ns_name);
name = ns_name;
}
/* count size to alloc */
namelen = strlen(name) + 1; /* zero terminated */
attslen = sizeof(char*); /* with space for sentinel */
textlen = 0;
for (i = 0; atts[i]; i++)
{
attslen += sizeof(char*);
if ((i & 1) == 0)
textlen += strlen(skip_namespace(atts[i])) + 1;
else
textlen += strlen(atts[i]) + 1;
}
item = xps_alloc(ctx, sizeof(xps_item_t) + attslen + namelen + textlen);
if (!item) {
parser->error = "out of memory";
gs_throw(gs_error_VMerror, "out of memory.\n");
return;
}
/* copy strings to new memory */
item->atts = (char**) (((char*)item) + sizeof(xps_item_t));
item->name = ((char*)item) + sizeof(xps_item_t) + attslen;
p = ((char*)item) + sizeof(xps_item_t) + attslen + namelen;
strcpy(item->name, name);
for (i = 0; atts[i]; i++)
{
item->atts[i] = p;
if ((i & 1) == 0)
strcpy(item->atts[i], skip_namespace(atts[i]));
else
strcpy(item->atts[i], atts[i]);
p += strlen(p) + 1;
}
item->atts[i] = 0;
/* link item into tree */
item->up = parser->head;
item->down = NULL;
item->next = NULL;
if (!parser->head)
{
parser->root = item;
parser->head = item;
return;
}
if (!parser->head->down)
{
parser->head->down = item;
parser->head->tail = item;
parser->head = item;
return;
}
tail = parser->head->tail;
tail->next = item;
parser->head->tail = item;
parser->head = item;
}
int
xps_decode_png(xps_context_t *ctx, byte *rbuf, int rlen, xps_image_t *image)
{
png_structp png;
png_infop info;
struct xps_png_io_s io;
int npasses;
int pass;
int y;
/*
* Set up PNG structs and input source
*/
io.ptr = rbuf;
io.lim = rbuf + rlen;
png = png_create_read_struct_2(PNG_LIBPNG_VER_STRING,
NULL, NULL, NULL,
ctx->memory, xps_png_malloc, xps_png_free);
if (!png)
return gs_throw(-1, "png_create_read_struct");
info = png_create_info_struct(png);
if (!info)
return gs_throw(-1, "png_create_info_struct");
png_set_read_fn(png, &io, xps_png_read);
png_set_crc_action(png, PNG_CRC_WARN_USE, PNG_CRC_WARN_USE);
/*
* Jump to here on errors.
*/
if (setjmp(png_jmpbuf(png)))
{
png_destroy_read_struct(&png, &info, NULL);
return gs_throw(-1, "png reading failed");
}
/*
* Read PNG header
*/
png_read_info(png, info);
if (png_get_interlace_type(png, info) == PNG_INTERLACE_ADAM7)
{
npasses = png_set_interlace_handling(png);
}
else
{
npasses = 1;
}
if (png_get_color_type(png, info) == PNG_COLOR_TYPE_PALETTE)
{
png_set_palette_to_rgb(png);
}
if (png_get_valid(png, info, PNG_INFO_tRNS))
{
/* this will also expand the depth to 8-bits */
png_set_tRNS_to_alpha(png);
}
png_read_update_info(png, info);
image->width = png_get_image_width(png, info);
image->height = png_get_image_height(png, info);
image->comps = png_get_channels(png, info);
image->bits = png_get_bit_depth(png, info);
/* See if we have an icc profile */
if (info->iccp_profile != NULL)
{
image->profilesize = info->iccp_proflen;
image->profile = xps_alloc(ctx, info->iccp_proflen);
if (image->profile)
{
/* If we can't create it, just ignore */
memcpy(image->profile, info->iccp_profile, info->iccp_proflen);
}
}
switch (png_get_color_type(png, info))
{
case PNG_COLOR_TYPE_GRAY:
image->colorspace = ctx->gray;
image->hasalpha = 0;
break;
case PNG_COLOR_TYPE_RGB:
image->colorspace = ctx->srgb;
image->hasalpha = 0;
break;
case PNG_COLOR_TYPE_GRAY_ALPHA:
image->colorspace = ctx->gray;
image->hasalpha = 1;
break;
case PNG_COLOR_TYPE_RGB_ALPHA:
image->colorspace = ctx->srgb;
image->hasalpha = 1;
break;
default:
return gs_throw(-1, "cannot handle this png color type");
}
/*
* Extract DPI, default to 96 dpi
*/
image->xres = 96;
image->yres = 96;
if (info->valid & PNG_INFO_pHYs)
{
png_uint_32 xres, yres;
int unit;
png_get_pHYs(png, info, &xres, &yres, &unit);
if (unit == PNG_RESOLUTION_METER)
{
image->xres = xres * 0.0254 + 0.5;
image->yres = yres * 0.0254 + 0.5;
}
}
/*
* Read rows, filling transformed output into image buffer.
*/
image->stride = (image->width * image->comps * image->bits + 7) / 8;
image->samples = xps_alloc(ctx, image->stride * image->height);
for (pass = 0; pass < npasses; pass++)
{
for (y = 0; y < image->height; y++)
{
png_read_row(png, image->samples + (y * image->stride), NULL);
}
}
/*
* Clean up memory.
*/
png_destroy_read_struct(&png, &info, NULL);
return gs_okay;
}
