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generate internal font from glyph data on demand

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This commit is contained in:
Vincent Sanders 2014-08-17 23:49:06 +01:00
parent ea1e68feba
commit 98a4985b30
4 changed files with 174 additions and 6252 deletions
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6182
framebuffer/GEN_font_internal.c
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File diff suppressed because it is too large Load Diff

44
framebuffer/Makefile.target
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@ -70,11 +70,6 @@ endif
# built-in resource setup
# ----------------------------------------------------------------------------
# We make convert_image depend on fb_bitmap.h so that if we change
# that header, we get new images built just in case.
$(TOOLROOT)/convert_image: $(TOOLROOT)/created framebuffer/convert_image.c framebuffer/fbtk.h
$(VQ)echo " HOST CC: $@"
$(Q)$(HOST_CC) -o $@ framebuffer/convert_image.c -lpng
FB_IMAGE_left_arrow := framebuffer/res/icons/back.png
FB_IMAGE_right_arrow := framebuffer/res/icons/forward.png
@ -112,6 +107,14 @@ FB_IMAGE_throbber6 := framebuffer/res/throbber/throbber6.png
FB_IMAGE_throbber7 := framebuffer/res/throbber/throbber7.png
FB_IMAGE_throbber8 := framebuffer/res/throbber/throbber8.png
# Host tool to convert image bitmaps to source code.
#
# convert_image dependd on fb_bitmap.h so that if we change that
# header, we get new images built.
$(TOOLROOT)/convert_image: $(TOOLROOT)/created framebuffer/convert_image.c framebuffer/fbtk.h
$(VQ)echo " HOST CC: $@"
$(Q)$(HOST_CC) -o $@ framebuffer/convert_image.c -lpng
# 1: input file
# 2: output file
# 3: bitmap name
@ -126,7 +129,34 @@ endef
S_IMAGES :=
$(eval $(foreach V,$(filter FB_IMAGE_%,$(.VARIABLES)),$(call convert_image,$($(V)),$(OBJROOT)/$(patsubst FB_IMAGE_%,%,$(V)).c,$(patsubst FB_IMAGE_%,%,$(V)))))
$(eval $(foreach V,$(filter FB_IMAGE_%,$(.VARIABLES)),$(call convert_image,$($(V)),$(OBJROOT)/image-$(patsubst FB_IMAGE_%,%,$(V)).c,$(patsubst FB_IMAGE_%,%,$(V)))))
# Internal fonts to generate
FB_FONT_internal_core := framebuffer/res/fonts/glyph_data
# Internal font conversion
$(TOOLROOT)/convert_font: $(TOOLROOT)/created framebuffer/convert_font.c
$(VQ)echo " HOST CC: $@"
$(Q)$(HOST_CC) -o $@ framebuffer/convert_font.c
# 1: input file
# 2: output source code file
# 3: output header file
# 4: font name
define convert_font
S_FONTS += $(2)
$(2): $(1) $(TOOLROOT)/convert_font
$(VQ)echo " FONT: $(1) ($(4))"
$(Q)$(TOOLROOT)/convert_font -H $(3) $(1) $(2)
endef
S_FONTS :=
$(eval $(foreach V,$(filter FB_FONT_$(NETSURF_FB_FONTLIB)_%,$(.VARIABLES)),$(call convert_font,$($(V)),$(OBJROOT)/font-$(patsubst FB_FONT_$(NETSURF_FB_FONTLIB)_%,%,$(V)).c,$(OBJROOT)/font-$(patsubst FB_FONT_$(NETSURF_FB_FONTLIB)_%,%,$(V)).h,$(patsubst FB_FONT_$(NETSURF_FB_FONTLIB)_%,%,$(V)))))
# ----------------------------------------------------------------------------
# Source file setup
@ -147,7 +177,7 @@ S_FRAMEBUFFER := $(addprefix framebuffer/,$(S_FRAMEBUFFER)) $(addprefix framebuf
# This is the final source build list
# Note this is deliberately *not* expanded here as common and image
# are not yet available
SOURCES = $(S_COMMON) $(S_IMAGE) $(S_BROWSER) $(S_FRAMEBUFFER) $(S_IMAGES)
SOURCES = $(S_COMMON) $(S_IMAGE) $(S_BROWSER) $(S_FRAMEBUFFER) $(S_IMAGES) $(S_FONTS)
EXETARGET := nsfb
# ----------------------------------------------------------------------------

197
framebuffer/convert_font.c
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@ -1,16 +1,37 @@
/*
* Copyright 2014 Michael Drake <tlsa@netsurf-browser.org>
* Copyright 2014 Vincent Sanders <vince@netsurf-browser.org>
*
* 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 <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <getopt.h>
#define GLYPH_LEN 16
#define BUCKETS 512
#define CHUNK_SIZE (64 * 1024)
#define HEADER_MAX 2000
#define GLYPH_LEN 16
#define BUCKETS 512
#define CHUNK_SIZE (64 * 1024)
#define HEADER_MAX 2000
#define SECTION_SIZE (sizeof(uint16_t) * 256)
#define SECTION_SIZE (sizeof(uint16_t) * 256)
const char *labels[4] = {
" Regular",
@ -34,10 +55,10 @@ const char *short_labels[4] = {
};
enum font_style {
REGULAR = 0,
ITALIC = (1 << 0),
BOLD = (1 << 1),
ITALIC_BOLD = (1 << 2)
REGULAR = 0,
ITALIC = (1 << 0),
BOLD = (1 << 1),
ITALIC_BOLD = (1 << 2)
};
enum log_level {
@ -71,7 +92,7 @@ glyph_entry *ht[BUCKETS];
/**
* Get hash for glyph data
* \param g Glyph data (GLYPH_LEN bytes)
* \param g Glyph data (GLYPH_LEN bytes)
* \return glyph's hash
*/
static inline uint32_t glyph_hash(const uint8_t *g)
@ -82,7 +103,7 @@ static inline uint32_t glyph_hash(const uint8_t *g)
while (len > 0) {
hash *= 0x01000193;
hash ^= *g++;
len--;
len--;
}
return hash;
@ -92,8 +113,8 @@ static inline uint32_t glyph_hash(const uint8_t *g)
/**
* Check whether glyphs are identical (compares glyph data)
*
* \param g1 First glyph's data (GLYPH_LEN bytes)
* \param g2 Second glyph's data (GLYPH_LEN bytes)
* \param g1 First glyph's data (GLYPH_LEN bytes)
* \param g2 Second glyph's data (GLYPH_LEN bytes)
* \return true iff both glyphs are identical, else false
*/
static inline bool glyphs_match(const uint8_t *g1, const uint8_t *g2)
@ -109,8 +130,8 @@ static inline bool glyphs_match(const uint8_t *g1, const uint8_t *g2)
* the existing glyph is returned. If the glyph does not exist in the chain
* it is added and its pointer is returned.
*
* \param head Head of hash chain
* \param new New glyph to add (may be freed)
* \param head Head of hash chain
* \param new New glyph to add (may be freed)
* \return pointer to glyph in hash chain
*/
static glyph_entry * glyph_add_to_chain(glyph_entry **head, glyph_entry *new)
@ -142,7 +163,7 @@ static glyph_entry * glyph_add_to_chain(glyph_entry **head, glyph_entry *new)
/**
* Free a glyph entry chain
*
* \param head Head of hash chain
* \param head Head of hash chain
*/
static void free_chain(glyph_entry *head)
{
@ -166,7 +187,7 @@ static void free_chain(glyph_entry *head)
* the existing glyph is returned. If the glyph does not exist in the table
* it is added and its pointer is returned.
*
* \param new New glyph to add (may be freed)
* \param new New glyph to add (may be freed)
* \return pointer to glyph in hash table
*/
static glyph_entry * glyph_add_to_table(glyph_entry *new)
@ -184,7 +205,7 @@ static glyph_entry * glyph_add_to_table(glyph_entry *new)
* the existing glyph is returned. If the glyph does not exist in the table
* it is added and its pointer is returned.
*
* \param new New glyph to add (may be freed)
* \param new New glyph to add (may be freed)
* \return pointer to glyph in hash table
*/
static void free_table(void)
@ -250,6 +271,41 @@ struct font_data {
int glyphs;
};
bool generate_font_header(const char *path, struct font_data *data)
{
FILE *fp;
int s;
fp = fopen(path, "wb");
if (fp == NULL) {
LOG(LOG_ERROR, "Couldn't open header file \"%s\"\n", path);
return false;
}
fprintf(fp, "/*\n");
fwrite(data->header, 1, data->header_len, fp);
fprintf(fp, " */\n\n");
fprintf(fp, "/* Don't edit this file, it was generated from the "
"plain text source data. */\n\n");
for (s = 0; s < 4; s++) {
fprintf(fp, "const uint8_t *%s_section_table;\n",
var_lables[s]);
fprintf(fp, "const uint16_t *%s_sections;\n",
var_lables[s]);
}
fprintf(fp, "const uint8_t *font_glyph_data;\n");
fprintf(fp, "\n\n");
fclose(fp);
return true;
}
bool generate_font_source(const char *path, struct font_data *data)
{
@ -307,7 +363,7 @@ bool generate_font_source(const char *path, struct font_data *data)
else
fprintf(fp, "0x%.4X, ", offset);
}
fprintf(fp, "};\n\n");
}
@ -334,7 +390,6 @@ bool generate_font_source(const char *path, struct font_data *data)
}
fprintf(fp, "};\n\n");
fclose(fp);
@ -465,8 +520,8 @@ static bool check_glyph_data_valid(int pos, char c)
#define THREE_S_S ((1 << 0) | (1 << 2))
#define THREE__SS ((1 << 0) | (1 << 1) )
#define THREE_SS_ ( (1 << 1) | (1 << 2))
#define THREE_S__ (1 << 2)
#define THREE__S_ (1 << 1)
#define THREE_S__ (1 << 2)
#define THREE__S_ (1 << 1)
#define THREE___S (1 << 0)
uint8_t frag[16][5] = {
@ -709,7 +764,7 @@ static bool parse_glyph_data(struct parse_context *ctx, char c,
ctx->id, i)) {
LOG(LOG_DEBUG, " U+%.4X (%s) is "
"codepoint\n",
ctx->id,
ctx->id,
short_labels[i]);
ctx->codepoints += 1;
free(ctx->data.in_gd.e[i]);
@ -929,7 +984,7 @@ static bool parse_chunk(struct parse_context *ctx, const char *buf, size_t len,
if (!ok) {
return false;
}
break;
}
@ -1030,7 +1085,7 @@ bool load_font(const char *path, struct font_data **data)
free(d);
return false;
}
LOG(LOG_INFO, "Parsing complete:\n");
count = 0;
for (i = 0; i < 4; i++) {
@ -1049,60 +1104,78 @@ bool load_font(const char *path, struct font_data **data)
return true;
}
static void log_usage(const char *argv0)
{
level = LOG_INFO;
LOG(LOG_INFO,
"Usage:\n"
"\t%s [options] <in_file> <out_file>\n"
"\n"
"Options:\n"
"\t--help -h Display this text\n"
"\t--quiet -q Don't show warnings\n"
"\t--verbose -v Verbose output\n"
"\t--debug -d Full debug output\n",
argv0);
}
int main(int argc, char** argv)
{
const char *in_path = NULL;
const char *out_path = NULL;
char *header_path = NULL;
struct font_data *data;
bool ok;
int i;
int opt;
level = LOG_RESULT;
/* Handle program arguments */
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
if (strcmp(argv[i], "-h") == 0 ||
strcmp(argv[i], "--help") == 0) {
level = LOG_INFO;
LOG(LOG_INFO, "Usage:\n"
"\t%s [options] <in_file> <out_file>\n"
"\n"
"Options:\n"
"\t--help -h Display this text\n"
"\t--quiet -q Don't show warnings\n"
"\t--verbose -v Verbose output\n"
"\t--debug -d Full debug output\n",
argv[0]);
return EXIT_SUCCESS;
} if (argc >= 3 && (strcmp(argv[i], "-v") == 0 ||
strcmp(argv[i], "--verbose") == 0)) {
level = LOG_INFO;
} else if (argc >= 3 && (strcmp(argv[i], "-d") == 0 ||
strcmp(argv[i], "--debug") == 0)) {
level = LOG_DEBUG;
} else if (argc >= 3 && (strcmp(argv[i], "-q") == 0 ||
strcmp(argv[i], "--quiet") == 0)) {
level = LOG_WARNING;
}
struct option long_options[] = {
{ "help", no_argument, NULL, 'h' },
{ "quiet", no_argument, NULL, 'q' },
{ "verbose", no_argument, NULL, 'v' },
{ "debug", no_argument, NULL, 'd' },
{ "header", required_argument, NULL, 'H' },
};
continue;
while ((opt = getopt_long(argc, argv, "hqvdH:", long_options, NULL)) != -1) {
switch (opt) {
case 'q':
level = LOG_WARNING;
break;
case 'v':
level = LOG_INFO;
break;
case 'd':
level = LOG_DEBUG;
break;
case 'H':
header_path = strdup(optarg);
break;
case 'h':
log_usage(argv[0]);
return EXIT_SUCCESS;
default:
log_usage(argv[0]);
return EXIT_FAILURE;
}
if (in_path == NULL)
in_path = argv[i];
else
out_path = argv[i];
}
if (in_path == NULL || out_path == NULL) {
LOG(LOG_ERROR, "Usage:\n"
"\t%s [options] <in_file> <out_file>\n",
argv[0]);
if ((argc - optind) < 2) {
log_usage(argv[0]);
return EXIT_FAILURE;
}
in_path = argv[optind];
out_path = argv[optind + 1];
LOG(LOG_DEBUG, "Using input path: \"%s\"\n", in_path);
LOG(LOG_DEBUG, "Using output path: \"%s\"\n", out_path);
@ -1113,6 +1186,9 @@ int main(int argc, char** argv)
}
ok = generate_font_source(out_path, data);
if (ok && (header_path != NULL)) {
ok = generate_font_header(header_path, data);
}
free_table();
for (i = 0; i < 4; i++) {
free(data->sections[i]);
@ -1124,4 +1200,3 @@ int main(int argc, char** argv)
return EXIT_SUCCESS;
}

3
framebuffer/font_internal.c
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@ -30,8 +30,7 @@
#include "framebuffer/gui.h"
#include "framebuffer/font.h"
#include "framebuffer/GEN_font_internal.c"
#include <font-core.h>
#define GLYPH_LEN 16