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This commit is contained in:
Fabio Guerra
2020-08-12 00:45:06 -03:00
parent b3634790cd
commit e399b7a085
2 changed files with 724 additions and 730 deletions
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86
src/lv_font/lv_font_loader.c
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@@ -51,8 +51,7 @@ typedef struct font_header_bin {
uint8_t padding;
} font_header_bin_t;
typedef struct cmap_table_bin
{
typedef struct cmap_table_bin {
uint32_t data_offset;
uint32_t range_start;
uint16_t range_length;
@@ -68,10 +67,10 @@ typedef struct cmap_table_bin
**********************/
static bit_iterator_t init_bit_iterator(lv_fs_file_t * fp);
static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font);
int32_t load_kern(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t format, uint32_t start);
int32_t load_kern(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t format, uint32_t start);
static int read_bits_signed(bit_iterator_t *it, int n_bits, lv_fs_res_t * res);
static int read_bits(bit_iterator_t *it, int n_bits, lv_fs_res_t * res);
static int read_bits_signed(bit_iterator_t * it, int n_bits, lv_fs_res_t * res);
static int read_bits(bit_iterator_t * it, int n_bits, lv_fs_res_t * res);
/**********************
@@ -101,8 +100,7 @@ lv_font_t * lv_font_load(const char * font_name)
success = lvgl_load_font(&file, font);
}
if (!success)
{
if(!success) {
LV_LOG_WARN("Error loading font file: %s\n", font_name);
lv_font_free(font);
font = NULL;
@@ -125,7 +123,7 @@ void lv_font_free(lv_font_t * font)
if(NULL != dsc) {
if (dsc->kern_classes == 0) {
if(dsc->kern_classes == 0) {
lv_font_fmt_txt_kern_pair_t * kern_dsc =
(lv_font_fmt_txt_kern_pair_t *) dsc->kern_dsc;
@@ -196,7 +194,7 @@ static bit_iterator_t init_bit_iterator(lv_fs_file_t * fp)
return it;
}
static int read_bits(bit_iterator_t *it, int n_bits, lv_fs_res_t * res)
static int read_bits(bit_iterator_t * it, int n_bits, lv_fs_res_t * res)
{
int value = 0;
while(n_bits--) {
@@ -206,7 +204,7 @@ static int read_bits(bit_iterator_t *it, int n_bits, lv_fs_res_t * res)
if(it->bit_pos < 0) {
it->bit_pos = 7;
*res = lv_fs_read(it->fp, &(it->byte_value), 1, NULL);
if (*res != LV_FS_RES_OK) {
if(*res != LV_FS_RES_OK) {
return -1;
}
}
@@ -218,18 +216,18 @@ static int read_bits(bit_iterator_t *it, int n_bits, lv_fs_res_t * res)
return value;
}
static int read_bits_signed(bit_iterator_t *it, int n_bits, lv_fs_res_t * res)
static int read_bits_signed(bit_iterator_t * it, int n_bits, lv_fs_res_t * res)
{
int value = read_bits(it, n_bits, res);
if (value & (1 << (n_bits-1))) {
for (int bit = n_bits; bit < 8; ++bit) {
if(value & (1 << (n_bits - 1))) {
for(int bit = n_bits; bit < 8; ++bit) {
value |= (1 << bit);
}
}
return value;
}
static int read_label(lv_fs_file_t *fp, int start, const char *label)
static int read_label(lv_fs_file_t * fp, int start, const char * label)
{
lv_fs_seek(fp, start);
@@ -246,7 +244,7 @@ static int read_label(lv_fs_file_t *fp, int start, const char *label)
return length;
}
static bool load_cmaps_tables(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc,
static bool load_cmaps_tables(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc,
uint32_t cmaps_start, cmap_table_bin_t * cmap_table)
{
for(unsigned int i = 0; i < font_dsc->cmap_num; ++i) {
@@ -254,7 +252,7 @@ static bool load_cmaps_tables(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc
return false;
}
lv_font_fmt_txt_cmap_t * cmap = (lv_font_fmt_txt_cmap_t *) &(font_dsc->cmaps[i]);
lv_font_fmt_txt_cmap_t * cmap = (lv_font_fmt_txt_cmap_t *) & (font_dsc->cmaps[i]);
cmap->range_start = cmap_table[i].range_start;
cmap->range_length = cmap_table[i].range_length;
@@ -267,11 +265,10 @@ static bool load_cmaps_tables(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc
return false;
}
lv_font_fmt_txt_cmap_t * cmap = (lv_font_fmt_txt_cmap_t *) &(font_dsc->cmaps[i]);
lv_font_fmt_txt_cmap_t * cmap = (lv_font_fmt_txt_cmap_t *) & (font_dsc->cmaps[i]);
switch(cmap_table[i].format_type) {
case 0:
{
case 0: {
uint8_t ids_size = sizeof(uint8_t) * cmap_table[i].data_entries_count;
uint8_t * glyph_id_ofs_list = lv_mem_alloc(ids_size);
@@ -293,8 +290,7 @@ static bool load_cmaps_tables(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc
cmap->glyph_id_ofs_list = NULL;
break;
case 1:
case 3:
{
case 3: {
uint32_t list_size = sizeof(uint16_t) * cmap_table[i].data_entries_count;
uint16_t * unicode_list = (uint16_t *) lv_mem_alloc(list_size);
@@ -305,8 +301,7 @@ static bool load_cmaps_tables(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc
return false;
}
if (cmap_table[i].format_type == 1)
{
if(cmap_table[i].format_type == 1) {
uint16_t * buf = lv_mem_alloc(sizeof(uint16_t) * cmap->list_length);
cmap->type = LV_FONT_FMT_TXT_CMAP_SPARSE_FULL;
@@ -316,8 +311,7 @@ static bool load_cmaps_tables(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc
return false;
}
}
else
{
else {
cmap->type = LV_FONT_FMT_TXT_CMAP_SPARSE_TINY;
cmap->glyph_id_ofs_list = NULL;
}
@@ -331,10 +325,10 @@ static bool load_cmaps_tables(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc
return true;
}
static int32_t load_cmaps(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc, uint32_t cmaps_start)
static int32_t load_cmaps(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc, uint32_t cmaps_start)
{
int32_t cmaps_length = read_label(fp, cmaps_start, "cmap");
if (cmaps_length < 0) {
if(cmaps_length < 0) {
return -1;
}
@@ -360,11 +354,11 @@ static int32_t load_cmaps(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc, ui
return success ? cmaps_length : -1;
}
static int32_t load_glyph(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc,
uint32_t start, uint32_t *glyph_offset, uint32_t loca_count, font_header_bin_t *header)
static int32_t load_glyph(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc,
uint32_t start, uint32_t * glyph_offset, uint32_t loca_count, font_header_bin_t * header)
{
int32_t glyph_length = read_label(fp, start, "glyf");
if (glyph_length < 0) {
if(glyph_length < 0) {
return -1;
}
@@ -422,7 +416,7 @@ static int32_t load_glyph(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc,
}
int nbits = header->advance_width_bits + 2 * header->xy_bits + 2 * header->wh_bits;
int next_offset = (i < loca_count - 1) ? glyph_offset[i + 1] : (uint32_t) (glyph_length - 1);
int next_offset = (i < loca_count - 1) ? glyph_offset[i + 1] : (uint32_t)(glyph_length - 1);
int bmp_size = next_offset - glyph_offset[i] - nbits / 8;
if(i == 0) {
@@ -463,7 +457,7 @@ static int32_t load_glyph(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc,
continue;
}
int next_offset = (i < loca_count - 1) ? glyph_offset[i + 1] : (uint32_t) (glyph_length - 1);
int next_offset = (i < loca_count - 1) ? glyph_offset[i + 1] : (uint32_t)(glyph_length - 1);
int bmp_size = next_offset - glyph_offset[i] - nbits / 8;
for(int k = 0; k < bmp_size; ++k) {
@@ -488,7 +482,7 @@ static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font)
/* header */
int32_t header_length = read_label(fp, 0, "head");
if (header_length < 0) {
if(header_length < 0) {
return false;
}
@@ -513,14 +507,14 @@ static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font)
/* cmaps */
uint32_t cmaps_start = header_length;
int32_t cmaps_length = load_cmaps(fp, font_dsc, cmaps_start);
if (cmaps_length < 0) {
if(cmaps_length < 0) {
return false;
}
/* loca */
uint32_t loca_start = cmaps_start + cmaps_length;
int32_t loca_length = read_label(fp, loca_start, "loca");
if (loca_length < 0) {
if(loca_length < 0) {
return false;
}
@@ -530,7 +524,7 @@ static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font)
}
bool failed = false;
uint32_t *glyph_offset = lv_mem_alloc(sizeof(uint32_t) * (loca_count + 1));
uint32_t * glyph_offset = lv_mem_alloc(sizeof(uint32_t) * (loca_count + 1));
for(unsigned int i = 0; i < loca_count; ++i) {
if(font_header.index_to_loc_format == 0) {
@@ -556,7 +550,7 @@ static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font)
}
}
if (failed) {
if(failed) {
lv_mem_free(glyph_offset);
return false;
}
@@ -568,11 +562,11 @@ static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font)
lv_mem_free(glyph_offset);
if (glyph_length < 0) {
if(glyph_length < 0) {
return false;
}
if (font_header.tables_count < 4) {
if(font_header.tables_count < 4) {
font_dsc->kern_dsc = NULL;
font_dsc->kern_classes = 0;
font_dsc->kern_scale = 0;
@@ -586,16 +580,16 @@ static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font)
return kern_length >= 0;
}
int32_t load_kern(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t format, uint32_t start)
int32_t load_kern(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t format, uint32_t start)
{
int32_t kern_length = read_label(fp, start, "kern");
if (kern_length < 0) {
if(kern_length < 0) {
return -1;
}
uint8_t kern_format_type;
int32_t padding;
if (lv_fs_read(fp, &kern_format_type, sizeof(uint8_t), NULL) != LV_FS_RES_OK ||
if(lv_fs_read(fp, &kern_format_type, sizeof(uint8_t), NULL) != LV_FS_RES_OK ||
lv_fs_read(fp, &padding, 3 * sizeof(uint8_t), NULL) != LV_FS_RES_OK) {
return -1;
}
@@ -609,12 +603,12 @@ int32_t load_kern(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t fo
font_dsc->kern_classes = 0;
uint32_t glyph_entries;
if (lv_fs_read(fp, &glyph_entries, sizeof(uint32_t), NULL) != LV_FS_RES_OK) {
if(lv_fs_read(fp, &glyph_entries, sizeof(uint32_t), NULL) != LV_FS_RES_OK) {
return -1;
}
int ids_size;
if (format == 0) {
if(format == 0) {
ids_size = sizeof(int8_t) * 2 * glyph_entries;
}
else {
@@ -629,11 +623,11 @@ int32_t load_kern(lv_fs_file_t *fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t fo
kern_pair->glyph_ids = glyph_ids;
kern_pair->values = values;
if (lv_fs_read(fp, glyph_ids, ids_size, NULL) != LV_FS_RES_OK) {
if(lv_fs_read(fp, glyph_ids, ids_size, NULL) != LV_FS_RES_OK) {
return -1;
}
if (lv_fs_read(fp, values, glyph_entries, NULL) != LV_FS_RES_OK) {
if(lv_fs_read(fp, values, glyph_entries, NULL) != LV_FS_RES_OK) {
return -1;
}
}