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b8826d1e6d
repo/extra/libass/patches/no-fribidi.patch
Owen Rafferty 6742bc552a
libass: 0.17.3
2024-07-02 21:12:36 -05:00

275 lines
8.8 KiB
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diff --git a/libass/ass_render.h b/libass/ass_render.h
index 7a157ab..c8adf1d 100644
--- a/libass/ass_render.h
+++ b/libass/ass_render.h
@@ -22,7 +22,6 @@
#include <inttypes.h>
#include <stdbool.h>
-#include <fribidi.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
@@ -49,6 +48,8 @@
#define PARSED_FADE (1<<0)
#define PARSED_A (1<<1)
+typedef uint32_t FriBidiChar;
+
typedef struct {
ASS_Image result;
CompositeHashValue *source;
diff --git a/libass/ass_shaper.c b/libass/ass_shaper.c
index 86f2c66..e72a7d5 100644
--- a/libass/ass_shaper.c
+++ b/libass/ass_shaper.c
@@ -87,8 +87,7 @@ struct ass_shaper_metrics_data {
*/
void ass_shaper_info(ASS_Library *lib)
{
- ass_msg(lib, MSGL_INFO, "Shaper: FriBidi "
- FRIBIDI_VERSION " (SIMPLE)"
+ ass_msg(lib, MSGL_INFO, "Shaper: "
" HarfBuzz-ng %s (COMPLEX)", hb_version_string()
);
}
@@ -705,8 +704,7 @@ static bool shape_harfbuzz(ASS_Shaper *shaper, GlyphInfo *glyphs, size_t len)
lead_context, i - offset + 1);
}
- props.direction = FRIBIDI_LEVEL_IS_RTL(level) ?
- HB_DIRECTION_RTL : HB_DIRECTION_LTR;
+ props.direction = HB_DIRECTION_LTR;
props.script = glyphs[offset].script;
props.language = hb_shaper_get_run_language(shaper, props.script);
hb_buffer_set_segment_properties(buf, &props);
@@ -774,35 +772,6 @@ void ass_shaper_determine_script(ASS_Shaper *shaper, GlyphInfo *glyphs,
}
}
-/**
- * \brief Shape event text with FriBidi. Does mirroring and simple
- * Arabic shaping.
- * \param len number of clusters
- */
-static void shape_fribidi(ASS_Shaper *shaper, GlyphInfo *glyphs, size_t len)
-{
- int i;
- FriBidiJoiningType *joins = calloc(len, sizeof(*joins));
-
- // shape on codepoint level
- fribidi_get_joining_types(shaper->event_text, len, joins);
- fribidi_join_arabic(shaper->ctypes, len, shaper->emblevels, joins);
- fribidi_shape(FRIBIDI_FLAGS_DEFAULT | FRIBIDI_FLAGS_ARABIC,
- shaper->emblevels, len, joins, shaper->event_text);
-
- // update indexes
- for (i = 0; i < len; i++) {
- GlyphInfo *info = glyphs + i;
- FT_Face face = info->font->faces[info->face_index];
- info->symbol = shaper->event_text[i];
- info->glyph_index = ass_font_index_magic(face, shaper->event_text[i]);
- if (info->glyph_index)
- info->glyph_index = FT_Get_Char_Index(face, info->glyph_index);
- }
-
- free(joins);
-}
-
/**
* \brief Toggle kerning for HarfBuzz shaping.
* \param shaper shaper instance
@@ -895,7 +864,7 @@ void ass_shaper_set_base_direction(ASS_Shaper *shaper, FriBidiParType dir)
shaper->base_direction = dir;
if (shaper->whole_text_layout != WHOLE_TEXT_LAYOUT_EXPLICIT)
- shaper->whole_text_layout = dir == FRIBIDI_PAR_ON ?
+ shaper->whole_text_layout = dir == 0 ?
WHOLE_TEXT_LAYOUT_IMPLICIT : WHOLE_TEXT_LAYOUT_OFF;
}
@@ -935,7 +904,7 @@ void ass_shaper_set_whole_text_layout(ASS_Shaper *shaper, bool enable)
{
shaper->whole_text_layout = enable ?
WHOLE_TEXT_LAYOUT_EXPLICIT :
- shaper->base_direction == FRIBIDI_PAR_ON ?
+ shaper->base_direction == 0 ?
WHOLE_TEXT_LAYOUT_IMPLICIT : WHOLE_TEXT_LAYOUT_OFF;
}
@@ -946,8 +915,7 @@ void ass_shaper_set_whole_text_layout(ASS_Shaper *shaper, bool enable)
*/
bool ass_shaper_shape(ASS_Shaper *shaper, TextInfo *text_info)
{
- int i, ret, last_break;
- FriBidiParType dir, *pdir;
+ int i;
GlyphInfo *glyphs = text_info->glyphs;
shaper->event_text = text_info->event_text;
@@ -957,61 +925,7 @@ bool ass_shaper_shape(ASS_Shaper *shaper, TextInfo *text_info)
for (i = 0; i < text_info->length; i++)
shaper->event_text[i] = glyphs[i].symbol;
- fribidi_get_bidi_types(shaper->event_text,
- text_info->length, shaper->ctypes);
-
- int n_pars = 1;
- for (i = 0; i < text_info->length - 1; i++)
- if (shaper->ctypes[i] == FRIBIDI_TYPE_BS)
- n_pars++;
-
- if (!check_par_allocations(shaper, n_pars))
- return false;
-
-#ifdef USE_FRIBIDI_EX_API
- if (shaper->bidi_brackets) {
- fribidi_get_bracket_types(shaper->event_text,
- text_info->length, shaper->ctypes, shaper->btypes);
- }
-#endif
-
- // Get bidi embedding levels
- last_break = 0;
- pdir = shaper->pbase_dir;
- for (i = 0; i < text_info->length; i++) {
- // Embedding levels must be calculated one bidi "paragraph" at a time
- if (i == text_info->length - 1 ||
- shaper->ctypes[i] == FRIBIDI_TYPE_BS ||
- (!shaper->whole_text_layout &&
- (glyphs[i + 1].starts_new_run || glyphs[i].hspacing))) {
- dir = shaper->base_direction;
-#ifdef USE_FRIBIDI_EX_API
- FriBidiBracketType *btypes = NULL;
- if (shaper->bidi_brackets)
- btypes = shaper->btypes + last_break;
- ret = fribidi_get_par_embedding_levels_ex(
- shaper->ctypes + last_break, btypes,
- i - last_break + 1, &dir, shaper->emblevels + last_break);
-#else
- ret = fribidi_get_par_embedding_levels(shaper->ctypes + last_break,
- i - last_break + 1, &dir, shaper->emblevels + last_break);
-#endif
- if (ret == 0)
- return false;
- last_break = i + 1;
- if (shaper->whole_text_layout)
- *pdir++ = dir;
- }
- }
-
- switch (shaper->shaping_level) {
- case ASS_SHAPING_SIMPLE:
- shape_fribidi(shaper, glyphs, text_info->length);
- return true;
- case ASS_SHAPING_COMPLEX:
- default:
- return shape_harfbuzz(shaper, glyphs, text_info->length);
- }
+ return shape_harfbuzz(shaper, glyphs, text_info->length);
}
/**
@@ -1025,7 +939,7 @@ ASS_Shaper *ass_shaper_new(Cache *metrics_cache, Cache *face_size_metrics_cache)
if (!shaper)
return NULL;
- shaper->base_direction = FRIBIDI_PAR_ON;
+ shaper->base_direction = 0;
if (!init_features(shaper))
goto error;
@@ -1087,38 +1001,12 @@ void ass_shaper_cleanup(ASS_Shaper *shaper, TextInfo *text_info)
*/
FriBidiStrIndex *ass_shaper_reorder(ASS_Shaper *shaper, TextInfo *text_info)
{
- int i, ret;
+ int i;
// Initialize reorder map
for (i = 0; i < text_info->length; i++)
shaper->cmap[i] = i;
- // Create reorder map line-by-line or run-by-run
- int last_break = 0;
- FriBidiParType *pdir = shaper->whole_text_layout ?
- shaper->pbase_dir : &shaper->base_direction;
- GlyphInfo *glyphs = text_info->glyphs;
- for (i = 0; i < text_info->length; i++) {
- // Bidi "paragraph separators" may occur between line breaks:
- // U+001C..1E even with ASS_FEATURE_WRAP_UNICODE,
- // or U+000D, U+0085, U+2029 only without it
- if (i == text_info->length - 1 || glyphs[i + 1].linebreak ||
- shaper->ctypes[i] == FRIBIDI_TYPE_BS ||
- (!shaper->whole_text_layout &&
- (glyphs[i + 1].starts_new_run || glyphs[i].hspacing))) {
- ret = fribidi_reorder_line(0,
- shaper->ctypes, i - last_break + 1, last_break, *pdir,
- shaper->emblevels, NULL,
- shaper->cmap);
- if (ret == 0)
- return NULL;
-
- last_break = i + 1;
- if (shaper->whole_text_layout && shaper->ctypes[i] == FRIBIDI_TYPE_BS)
- pdir++;
- }
- }
-
return shaper->cmap;
}
@@ -1136,10 +1024,5 @@ FriBidiStrIndex *ass_shaper_get_reorder_map(ASS_Shaper *shaper)
*/
FriBidiParType ass_resolve_base_direction(int enc)
{
- switch (enc) {
- case -1:
- return FRIBIDI_PAR_ON;
- default:
- return FRIBIDI_PAR_LTR;
- }
+ return 0;
}
diff --git a/libass/ass_shaper.h b/libass/ass_shaper.h
index 06f868d..333252b 100644
--- a/libass/ass_shaper.h
+++ b/libass/ass_shaper.h
@@ -21,14 +21,15 @@
typedef struct ass_shaper ASS_Shaper;
-#include <fribidi.h>
#include <stdbool.h>
#include "ass_render.h"
#include "ass_cache.h"
-#if FRIBIDI_MAJOR_VERSION >= 1
-#define USE_FRIBIDI_EX_API
-#endif
+typedef uint32_t FriBidiChar;
+typedef uint32_t FriBidiCharType;
+typedef int FriBidiStrIndex;
+typedef int FriBidiParType;
+typedef signed char FriBidiLevel;
void ass_shaper_info(ASS_Library *lib);
ASS_Shaper *ass_shaper_new(Cache *metrics_cache, Cache *face_size_metrics_cache);
diff --git a/meson.build b/meson.build
index 9eb7969..bc40a57 100644
--- a/meson.build
+++ b/meson.build
@@ -87,12 +87,6 @@ deps += dependency(
default_options: ['harfbuzz=disabled'],
)
-deps += dependency(
- 'fribidi',
- version: '>= 0.19.1',
- default_options: ['docs=false', 'tests=false'],
-)
-
harfbuzz_options = [
'tests=disabled',
'cairo=disabled',
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