#include "ass_fontconfig.h"
#include "ass_library.h"
#include "ass_drawing.h"
+#include "ass_render.h"
#define MAX_GLYPHS_INITIAL 1024
#define MAX_LINES_INITIAL 64
#define GLYPH_CACHE_MAX 1000
#define BITMAP_CACHE_MAX_SIZE 50 * 1048576
-typedef struct {
- double xMin;
- double xMax;
- double yMin;
- double yMax;
-} DBBox;
-
-typedef struct {
- double x;
- double y;
-} DVector;
-
-typedef struct free_list {
- void *object;
- struct free_list *next;
-} FreeList;
-
-typedef struct {
- int frame_width;
- int frame_height;
- double font_size_coeff; // font size multiplier
- double line_spacing; // additional line spacing (in frame pixels)
- int top_margin; // height of top margin. Everything except toptitles is shifted down by top_margin.
- int bottom_margin; // height of bottom margin. (frame_height - top_margin - bottom_margin) is original video height.
- int left_margin;
- int right_margin;
- int use_margins; // 0 - place all subtitles inside original frame
- // 1 - use margins for placing toptitles and subtitles
- double aspect; // frame aspect ratio, d_width / d_height.
- double storage_aspect; // pixel ratio of the source image
- ASS_Hinting hinting;
-
- char *default_font;
- char *default_family;
-} ASS_Settings;
-
-// a rendered event
-typedef struct {
- ASS_Image *imgs;
- int top, height;
- int detect_collisions;
- int shift_direction;
- ASS_Event *event;
-} EventImages;
-
-typedef enum { EF_NONE = 0, EF_KARAOKE, EF_KARAOKE_KF, EF_KARAOKE_KO
-} Effect;
-
-// describes a glyph
-// GlyphInfo and TextInfo are used for text centering and word-wrapping operations
-typedef struct {
- unsigned symbol;
- FT_Glyph glyph;
- FT_Glyph outline_glyph;
- Bitmap *bm; // glyph bitmap
- Bitmap *bm_o; // outline bitmap
- Bitmap *bm_s; // shadow bitmap
- FT_BBox bbox;
- FT_Vector pos;
- char linebreak; // the first (leading) glyph of some line ?
- uint32_t c[4]; // colors
- FT_Vector advance; // 26.6
- Effect effect_type;
- int effect_timing; // time duration of current karaoke word
- // after process_karaoke_effects: distance in pixels from the glyph origin.
- // part of the glyph to the left of it is displayed in a different color.
- int effect_skip_timing; // delay after the end of last karaoke word
- int asc, desc; // font max ascender and descender
- int be; // blur edges
- double blur; // gaussian blur
- double shadow_x;
- double shadow_y;
- double frx, fry, frz; // rotation
- double fax, fay; // text shearing
-
- BitmapHashKey hash_key;
-} GlyphInfo;
-
-typedef struct {
- double asc, desc;
-} LineInfo;
-
-typedef struct {
- GlyphInfo *glyphs;
- int length;
- LineInfo *lines;
- int n_lines;
- double height;
- int max_glyphs;
- int max_lines;
-} TextInfo;
-
-
-// Renderer state.
-// Values like current font face, color, screen position, clipping and so on are stored here.
-typedef struct {
- ASS_Event *event;
- ASS_Style *style;
-
- ASS_Font *font;
- char *font_path;
- double font_size;
- int flags; // decoration flags (underline/strike-through)
-
- FT_Stroker stroker;
- int alignment; // alignment overrides go here; if zero, style value will be used
- double frx, fry, frz;
- double fax, fay; // text shearing
- enum {
- EVENT_NORMAL, // "normal" top-, sub- or mid- title
- EVENT_POSITIONED, // happens after pos(,), margins are ignored
- EVENT_HSCROLL, // "Banner" transition effect, text_width is unlimited
- EVENT_VSCROLL // "Scroll up", "Scroll down" transition effects
- } evt_type;
- double pos_x, pos_y; // position
- double org_x, org_y; // origin
- char have_origin; // origin is explicitly defined; if 0, get_base_point() is used
- double scale_x, scale_y;
- double hspacing; // distance between letters, in pixels
- double border_x; // outline width
- double border_y;
- uint32_t c[4]; // colors(Primary, Secondary, so on) in RGBA
- int clip_x0, clip_y0, clip_x1, clip_y1;
- char clip_mode; // 1 = iclip
- char detect_collisions;
- uint32_t fade; // alpha from \fad
- char be; // blur edges
- double blur; // gaussian blur
- double shadow_x;
- double shadow_y;
- int drawing_mode; // not implemented; when != 0 text is discarded, except for style override tags
- ASS_Drawing *drawing; // current drawing
- ASS_Drawing *clip_drawing; // clip vector
- int clip_drawing_mode; // 0 = regular clip, 1 = inverse clip
-
- Effect effect_type;
- int effect_timing;
- int effect_skip_timing;
-
- enum {
- SCROLL_LR, // left-to-right
- SCROLL_RL,
- SCROLL_TB, // top-to-bottom
- SCROLL_BT
- } scroll_direction; // for EVENT_HSCROLL, EVENT_VSCROLL
- int scroll_shift;
-
- // face properties
- char *family;
- unsigned bold;
- unsigned italic;
- int treat_family_as_pattern;
-
-} RenderContext;
-
-typedef struct {
- Hashmap *font_cache;
- Hashmap *glyph_cache;
- Hashmap *bitmap_cache;
- Hashmap *composite_cache;
- size_t glyph_max;
- size_t bitmap_max_size;
-} CacheStore;
-
-struct ass_renderer {
- ASS_Library *library;
- FT_Library ftlibrary;
- FCInstance *fontconfig_priv;
- ASS_Settings settings;
- int render_id;
- ASS_SynthPriv *synth_priv;
-
- ASS_Image *images_root; // rendering result is stored here
- ASS_Image *prev_images_root;
-
- EventImages *eimg; // temporary buffer for sorting rendered events
- int eimg_size; // allocated buffer size
-
- // frame-global data
- int width, height; // screen dimensions
- int orig_height; // frame height ( = screen height - margins )
- int orig_width; // frame width ( = screen width - margins )
- int orig_height_nocrop; // frame height ( = screen height - margins + cropheight)
- int orig_width_nocrop; // frame width ( = screen width - margins + cropwidth)
- ASS_Track *track;
- long long time; // frame's timestamp, ms
- double font_scale;
- double font_scale_x; // x scale applied to all glyphs to preserve text aspect ratio
- double border_scale;
-
- RenderContext state;
- TextInfo text_info;
- CacheStore cache;
-
- FreeList *free_head;
- FreeList *free_tail;
-};
-
-struct render_priv {
- int top, height;
- int render_id;
-};
-
-typedef struct {
- int x0;
- int y0;
- int x1;
- int y1;
-} Rect;
-
-typedef struct {
- int a, b; // top and height
-} Segment;
-
-/* End of type definitions */
-
static void ass_lazy_track_init(ASS_Renderer *render_priv)
{
ASS_Track *track = render_priv->track;
--- /dev/null
+/*
+ * Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
+ * Copyright (C) 2009 Grigori Goronzy <greg@geekmind.org>
+ *
+ * This file is part of libass.
+ *
+ * libass 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * libass 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 libass; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef LIBASS_RENDER_H
+#define LIBASS_RENDER_H
+
+#include <inttypes.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_STROKER_H
+#include FT_GLYPH_H
+#include FT_SYNTHESIS_H
+
+#include "ass.h"
+#include "ass_font.h"
+#include "ass_bitmap.h"
+#include "ass_cache.h"
+#include "ass_utils.h"
+#include "ass_fontconfig.h"
+#include "ass_library.h"
+#include "ass_drawing.h"
+
+typedef struct {
+ double xMin;
+ double xMax;
+ double yMin;
+ double yMax;
+} DBBox;
+
+typedef struct {
+ double x;
+ double y;
+} DVector;
+
+typedef struct free_list {
+ void *object;
+ struct free_list *next;
+} FreeList;
+
+typedef struct {
+ int frame_width;
+ int frame_height;
+ double font_size_coeff; // font size multiplier
+ double line_spacing; // additional line spacing (in frame pixels)
+ int top_margin; // height of top margin. Everything except toptitles is shifted down by top_margin.
+ int bottom_margin; // height of bottom margin. (frame_height - top_margin - bottom_margin) is original video height.
+ int left_margin;
+ int right_margin;
+ int use_margins; // 0 - place all subtitles inside original frame
+ // 1 - use margins for placing toptitles and subtitles
+ double aspect; // frame aspect ratio, d_width / d_height.
+ double storage_aspect; // pixel ratio of the source image
+ ASS_Hinting hinting;
+
+ char *default_font;
+ char *default_family;
+} ASS_Settings;
+
+// a rendered event
+typedef struct {
+ ASS_Image *imgs;
+ int top, height;
+ int detect_collisions;
+ int shift_direction;
+ ASS_Event *event;
+} EventImages;
+
+typedef enum {
+ EF_NONE = 0,
+ EF_KARAOKE,
+ EF_KARAOKE_KF,
+ EF_KARAOKE_KO
+} Effect;
+
+// describes a glyph
+// GlyphInfo and TextInfo are used for text centering and word-wrapping operations
+typedef struct {
+ unsigned symbol;
+ FT_Glyph glyph;
+ FT_Glyph outline_glyph;
+ Bitmap *bm; // glyph bitmap
+ Bitmap *bm_o; // outline bitmap
+ Bitmap *bm_s; // shadow bitmap
+ FT_BBox bbox;
+ FT_Vector pos;
+ char linebreak; // the first (leading) glyph of some line ?
+ uint32_t c[4]; // colors
+ FT_Vector advance; // 26.6
+ Effect effect_type;
+ int effect_timing; // time duration of current karaoke word
+ // after process_karaoke_effects: distance in pixels from the glyph origin.
+ // part of the glyph to the left of it is displayed in a different color.
+ int effect_skip_timing; // delay after the end of last karaoke word
+ int asc, desc; // font max ascender and descender
+ int be; // blur edges
+ double blur; // gaussian blur
+ double shadow_x;
+ double shadow_y;
+ double frx, fry, frz; // rotation
+ double fax, fay; // text shearing
+
+ BitmapHashKey hash_key;
+} GlyphInfo;
+
+typedef struct {
+ double asc, desc;
+} LineInfo;
+
+typedef struct {
+ GlyphInfo *glyphs;
+ int length;
+ LineInfo *lines;
+ int n_lines;
+ double height;
+ int max_glyphs;
+ int max_lines;
+} TextInfo;
+
+// Renderer state.
+// Values like current font face, color, screen position, clipping and so on are stored here.
+typedef struct {
+ ASS_Event *event;
+ ASS_Style *style;
+
+ ASS_Font *font;
+ char *font_path;
+ double font_size;
+ int flags; // decoration flags (underline/strike-through)
+
+ FT_Stroker stroker;
+ int alignment; // alignment overrides go here; if zero, style value will be used
+ double frx, fry, frz;
+ double fax, fay; // text shearing
+ enum {
+ EVENT_NORMAL, // "normal" top-, sub- or mid- title
+ EVENT_POSITIONED, // happens after pos(,), margins are ignored
+ EVENT_HSCROLL, // "Banner" transition effect, text_width is unlimited
+ EVENT_VSCROLL // "Scroll up", "Scroll down" transition effects
+ } evt_type;
+ double pos_x, pos_y; // position
+ double org_x, org_y; // origin
+ char have_origin; // origin is explicitly defined; if 0, get_base_point() is used
+ double scale_x, scale_y;
+ double hspacing; // distance between letters, in pixels
+ double border_x; // outline width
+ double border_y;
+ uint32_t c[4]; // colors(Primary, Secondary, so on) in RGBA
+ int clip_x0, clip_y0, clip_x1, clip_y1;
+ char clip_mode; // 1 = iclip
+ char detect_collisions;
+ uint32_t fade; // alpha from \fad
+ char be; // blur edges
+ double blur; // gaussian blur
+ double shadow_x;
+ double shadow_y;
+ int drawing_mode; // not implemented; when != 0 text is discarded, except for style override tags
+ ASS_Drawing *drawing; // current drawing
+ ASS_Drawing *clip_drawing; // clip vector
+ int clip_drawing_mode; // 0 = regular clip, 1 = inverse clip
+
+ Effect effect_type;
+ int effect_timing;
+ int effect_skip_timing;
+
+ enum {
+ SCROLL_LR, // left-to-right
+ SCROLL_RL,
+ SCROLL_TB, // top-to-bottom
+ SCROLL_BT
+ } scroll_direction; // for EVENT_HSCROLL, EVENT_VSCROLL
+ int scroll_shift;
+
+ // face properties
+ char *family;
+ unsigned bold;
+ unsigned italic;
+ int treat_family_as_pattern;
+
+} RenderContext;
+
+typedef struct {
+ Hashmap *font_cache;
+ Hashmap *glyph_cache;
+ Hashmap *bitmap_cache;
+ Hashmap *composite_cache;
+ size_t glyph_max;
+ size_t bitmap_max_size;
+} CacheStore;
+
+struct ass_renderer {
+ ASS_Library *library;
+ FT_Library ftlibrary;
+ FCInstance *fontconfig_priv;
+ ASS_Settings settings;
+ int render_id;
+ ASS_SynthPriv *synth_priv;
+
+ ASS_Image *images_root; // rendering result is stored here
+ ASS_Image *prev_images_root;
+
+ EventImages *eimg; // temporary buffer for sorting rendered events
+ int eimg_size; // allocated buffer size
+
+ // frame-global data
+ int width, height; // screen dimensions
+ int orig_height; // frame height ( = screen height - margins )
+ int orig_width; // frame width ( = screen width - margins )
+ int orig_height_nocrop; // frame height ( = screen height - margins + cropheight)
+ int orig_width_nocrop; // frame width ( = screen width - margins + cropwidth)
+ ASS_Track *track;
+ long long time; // frame's timestamp, ms
+ double font_scale;
+ double font_scale_x; // x scale applied to all glyphs to preserve text aspect ratio
+ double border_scale;
+
+ RenderContext state;
+ TextInfo text_info;
+ CacheStore cache;
+
+ FreeList *free_head;
+ FreeList *free_tail;
+};
+
+typedef struct render_priv {
+ int top, height;
+ int render_id;
+} RenderPriv;
+
+typedef struct {
+ int x0;
+ int y0;
+ int x1;
+ int y1;
+} Rect;
+
+typedef struct {
+ int a, b; // top and height
+} Segment;
+
+#endif /* LIBASS_RENDER_H */
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