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#include "gasp.h"
#include "support/util.h"
#define GASP_DOGRAY 0x0002
#define GASP_GRIDFIT 0x0001
#define GASP_SYMMETRIC_GRIDFIT 0x0004
#define GASP_SYMMETRIC_SMOOTHING 0x0008
caryll_standardType(gasp_Record, gasp_iRecord);
caryll_standardVectorImpl(gasp_RecordList, gasp_Record, gasp_iRecord, gasp_iRecordList);
static INLINE void initGasp(table_gasp *gasp) {
gasp->version = 1;
gasp_iRecordList.init(&gasp->records);
}
static INLINE void disposeGasp(MOVE table_gasp *gasp) {
gasp_iRecordList.dispose(&gasp->records);
}
caryll_standardRefType(table_gasp, table_iGasp, initGasp, disposeGasp);
table_gasp *otfcc_readGasp(const otfcc_Packet packet, const otfcc_Options *options) {
table_gasp *gasp = NULL;
FOR_TABLE(OTFCC_CHR('g','a','s','p'), table) {
font_file_pointer data = table.data;
uint32_t length = table.length;
if (length < 4) { goto FAIL; }
gasp = table_iGasp.create();
gasp->version = read_16u(data);
tableid_t numRanges = read_16u(data + 2);
if (length < 4 + numRanges * 4) { goto FAIL; }
for (uint32_t j = 0; j < numRanges; j++) {
gasp_Record record;
record.rangeMaxPPEM = read_16u(data + 4 + j * 4);
uint16_t rangeGaspBehavior = read_16u(data + 4 + j * 4 + 2);
record.dogray = !!(rangeGaspBehavior & GASP_DOGRAY);
record.gridfit = !!(rangeGaspBehavior & GASP_GRIDFIT);
record.symmetric_smoothing = !!(rangeGaspBehavior & GASP_SYMMETRIC_SMOOTHING);
record.symmetric_gridfit = !!(rangeGaspBehavior & GASP_SYMMETRIC_GRIDFIT);
gasp_iRecordList.push(&gasp->records, record);
}
return gasp;
FAIL:
logWarning("table 'gasp' corrupted.\n");
table_iGasp.free(gasp);
gasp = NULL;
}
return NULL;
}
void otfcc_dumpGasp(const table_gasp *table, json_value *root, const otfcc_Options *options) {
if (!table) return;
loggedStep("gasp") {
json_value *t = json_array_new(table->records.length);
for (uint16_t j = 0; j < table->records.length; j++) {
json_value *rec = json_object_new(5);
json_object_push(rec, "rangeMaxPPEM",
json_integer_new(table->records.items[j].rangeMaxPPEM));
json_object_push(rec, "dogray", json_boolean_new(table->records.items[j].dogray));
json_object_push(rec, "gridfit", json_boolean_new(table->records.items[j].gridfit));
json_object_push(rec, "symmetric_smoothing",
json_boolean_new(table->records.items[j].symmetric_smoothing));
json_object_push(rec, "symmetric_gridfit",
json_boolean_new(table->records.items[j].symmetric_gridfit));
json_array_push(t, rec);
}
json_object_push(root, "gasp", t);
}
}
table_gasp *otfcc_parseGasp(const json_value *root, const otfcc_Options *options) {
table_gasp *gasp = NULL;
json_value *table = NULL;
if ((table = json_obj_get_type(root, "gasp", json_array))) {
loggedStep("gasp") {
gasp = table_iGasp.create();
for (uint16_t j = 0; j < table->u.array.length; j++) {
json_value *r = table->u.array.values[j];
if (!r || r->type != json_object) continue;
gasp_Record record;
record.rangeMaxPPEM = json_obj_getint_fallback(r, "rangeMaxPPEM", 0xFFFF);
record.dogray = json_obj_getbool(r, "dogray");
record.gridfit = json_obj_getbool(r, "gridfit");
record.symmetric_smoothing = json_obj_getbool(r, "symmetric_smoothing");
record.symmetric_gridfit = json_obj_getbool(r, "symmetric_gridfit");
gasp_iRecordList.push(&gasp->records, record);
}
}
}
return gasp;
}
caryll_Buffer *otfcc_buildGasp(const table_gasp *gasp, const otfcc_Options *options) {
if (!gasp) return NULL;
caryll_Buffer *buf = bufnew();
bufwrite16b(buf, 1);
bufwrite16b(buf, gasp->records.length);
for (uint16_t j = 0; j < gasp->records.length; j++) {
gasp_Record *r = &(gasp->records.items[j]);
bufwrite16b(buf, r->rangeMaxPPEM);
bufwrite16b(buf, (r->dogray ? GASP_DOGRAY : 0) | (r->gridfit ? GASP_GRIDFIT : 0) |
(r->symmetric_gridfit ? GASP_SYMMETRIC_GRIDFIT : 0) |
(r->symmetric_smoothing ? GASP_SYMMETRIC_SMOOTHING : 0));
}
return buf;
}
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