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authoreugeni <eugeni@b3059339-0415-0410-9bf9-f77b7e298cf2>2006-09-24 16:04:37 +0000
committereugeni <eugeni@b3059339-0415-0410-9bf9-f77b7e298cf2>2006-09-24 16:04:37 +0000
commit1b0251e7ad18ad4bc3772487e1e4abe237cd1752 (patch)
treef85ab40079924c8d414a2eeb90ef664000fbed2c
parent5e490d613c472c9aac226b14a7aa1a73a13f8389 (diff)
downloadmpv-1b0251e7ad18ad4bc3772487e1e4abe237cd1752.tar.bz2
mpv-1b0251e7ad18ad4bc3772487e1e4abe237cd1752.tar.xz
Shadow support in libass.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19971 b3059339-0415-0410-9bf9-f77b7e298cf2
-rw-r--r--libass/ass_bitmap.c39
-rw-r--r--libass/ass_bitmap.h2
-rw-r--r--libass/ass_cache.c1
-rw-r--r--libass/ass_cache.h1
-rw-r--r--libass/ass_render.c34
5 files changed, 63 insertions, 14 deletions
diff --git a/libass/ass_bitmap.c b/libass/ass_bitmap.c
index df98f5a733..8eee401205 100644
--- a/libass/ass_bitmap.c
+++ b/libass/ass_bitmap.c
@@ -122,6 +122,15 @@ void ass_free_bitmap(bitmap_t* bm)
}
}
+static bitmap_t* copy_bitmap(const bitmap_t* src)
+{
+ bitmap_t* dst = alloc_bitmap(src->w, src->h);
+ dst->left = src->left;
+ dst->top = src->top;
+ memcpy(dst->buffer, src->buffer, src->w * src->h);
+ return dst;
+}
+
static bitmap_t* glyph_to_bitmap_internal(FT_Glyph glyph, int bord)
{
FT_BitmapGlyph bg;
@@ -165,15 +174,19 @@ static bitmap_t* glyph_to_bitmap_internal(FT_Glyph glyph, int bord)
return bm;
}
-static void fix_outline(bitmap_t* bm_g, bitmap_t* bm_o)
+static bitmap_t* fix_outline_and_shadow(bitmap_t* bm_g, bitmap_t* bm_o)
{
int x, y;
const int l = bm_o->left > bm_g->left ? bm_o->left : bm_g->left;
const int t = bm_o->top > bm_g->top ? bm_o->top : bm_g->top;
const int r = bm_o->left + bm_o->w < bm_g->left + bm_g->w ? bm_o->left + bm_o->w : bm_g->left + bm_g->w;
const int b = bm_o->top + bm_o->h < bm_g->top + bm_g->h ? bm_o->top + bm_o->h : bm_g->top + bm_g->h;
+
+ bitmap_t* bm_s = copy_bitmap(bm_o);
+
unsigned char* g = bm_g->buffer + (t - bm_g->top) * bm_g->w + (l - bm_g->left);
unsigned char* o = bm_o->buffer + (t - bm_o->top) * bm_o->w + (l - bm_o->left);
+ unsigned char* s = bm_s->buffer + (t - bm_s->top) * bm_s->w + (l - bm_s->left);
for (y = 0; y < b - t; ++y) {
for (x = 0; x < r - l; ++x) {
@@ -181,33 +194,38 @@ static void fix_outline(bitmap_t* bm_g, bitmap_t* bm_o)
c_g = g[x];
c_o = o[x];
o[x] = (c_o > c_g) ? c_o - c_g : 0;
+ s[x] = (c_o < 0xFF - c_g) ? c_o + c_g : 0xFF;
}
g += bm_g->w;
o += bm_o->w;
+ s += bm_s->w;
}
+
+ assert(bm_s);
+ return bm_s;
}
-int glyph_to_bitmap(ass_synth_priv_t* priv, FT_Glyph glyph, FT_Glyph outline_glyph, bitmap_t** bm_g, bitmap_t** bm_o, int be)
+int glyph_to_bitmap(ass_synth_priv_t* priv, FT_Glyph glyph, FT_Glyph outline_glyph,
+ bitmap_t** bm_g, bitmap_t** bm_o, bitmap_t** bm_s, int be)
{
const int bord = be ? ceil(blur_radius) : 0;
- assert(bm_g && bm_o);
+ assert(bm_g && bm_o && bm_s);
+
+ *bm_g = *bm_o = *bm_s = 0;
if (glyph)
*bm_g = glyph_to_bitmap_internal(glyph, bord);
- else
- *bm_g = 0;
if (!*bm_g)
return 1;
+
if (outline_glyph) {
*bm_o = glyph_to_bitmap_internal(outline_glyph, bord);
if (!*bm_o) {
ass_free_bitmap(*bm_g);
return 1;
}
- } else
- *bm_o = 0;
-
+ }
if (*bm_o)
resize_tmp(priv, (*bm_o)->w, (*bm_o)->h);
resize_tmp(priv, (*bm_g)->w, (*bm_g)->h);
@@ -219,8 +237,11 @@ int glyph_to_bitmap(ass_synth_priv_t* priv, FT_Glyph glyph, FT_Glyph outline_gly
}
if (*bm_o)
- fix_outline(*bm_g, *bm_o);
+ *bm_s = fix_outline_and_shadow(*bm_g, *bm_o);
+ else
+ *bm_s = copy_bitmap(*bm_g);
+ assert(bm_s);
return 0;
}
diff --git a/libass/ass_bitmap.h b/libass/ass_bitmap.h
index 7a6d7d459f..0cf2eb2cb1 100644
--- a/libass/ass_bitmap.h
+++ b/libass/ass_bitmap.h
@@ -12,7 +12,7 @@ typedef struct bitmap_s {
unsigned char* buffer; // w x h buffer
} bitmap_t;
-int glyph_to_bitmap(ass_synth_priv_t* priv, FT_Glyph glyph, FT_Glyph outline_glyph, bitmap_t** bm_g, bitmap_t** bm_o, int be);
+int glyph_to_bitmap(ass_synth_priv_t* priv, FT_Glyph glyph, FT_Glyph outline_glyph, bitmap_t** bm_g, bitmap_t** bm_o, bitmap_t** bm_s, int be);
void ass_free_bitmap(bitmap_t* bm);
#endif
diff --git a/libass/ass_cache.c b/libass/ass_cache.c
index a4f4be6169..aaea86b92a 100644
--- a/libass/ass_cache.c
+++ b/libass/ass_cache.c
@@ -202,6 +202,7 @@ void ass_glyph_cache_done(void)
glyph_hash_item_t* next = item->next;
if (item->val.bm) ass_free_bitmap(item->val.bm);
if (item->val.bm_o) ass_free_bitmap(item->val.bm_o);
+ if (item->val.bm_s) ass_free_bitmap(item->val.bm_s);
free(item);
item = next;
}
diff --git a/libass/ass_cache.h b/libass/ass_cache.h
index b17fcdb2e8..1a7aa8038e 100644
--- a/libass/ass_cache.h
+++ b/libass/ass_cache.h
@@ -38,6 +38,7 @@ typedef struct glyph_hash_key_s {
typedef struct glyph_hash_val_s {
bitmap_t* bm; // the actual glyph bitmaps
bitmap_t* bm_o;
+ bitmap_t* bm_s;
FT_BBox bbox_scaled; // bbox after scaling, but before rotation
FT_Vector advance; // 26.6, advance distance to the next glyph in line
} glyph_hash_val_t;
diff --git a/libass/ass_render.c b/libass/ass_render.c
index b35f643054..8a62a3a067 100644
--- a/libass/ass_render.c
+++ b/libass/ass_render.c
@@ -53,8 +53,9 @@ typedef struct glyph_info_s {
unsigned symbol;
FT_Glyph glyph;
FT_Glyph outline_glyph;
- bitmap_t* bm;
- bitmap_t* bm_o;
+ bitmap_t* bm; // glyph bitmap
+ bitmap_t* bm_o; // outline bitmap
+ bitmap_t* bm_s; // shadow bitmap
FT_BBox bbox;
FT_Vector pos;
char linebreak; // the first (leading) glyph of some line ?
@@ -68,6 +69,7 @@ typedef struct glyph_info_s {
int asc, desc; // font max ascender and descender
// int height;
int be; // blur edges
+ int shadow;
glyph_hash_key_t hash_key;
} glyph_info_t;
@@ -113,6 +115,7 @@ typedef struct render_context_s {
char detect_collisions;
uint32_t fade; // alpha from \fad
char be; // blur edges
+ int shadow;
effect_t effect_type;
int effect_timing;
@@ -376,7 +379,8 @@ static ass_image_t* render_text(text_info_t* text_info, int dst_x, int dst_y)
continue;
error = glyph_to_bitmap(ass_instance->synth_priv,
text_info->glyphs[i].glyph, text_info->glyphs[i].outline_glyph,
- &text_info->glyphs[i].bm, &text_info->glyphs[i].bm_o, text_info->glyphs[i].be);
+ &text_info->glyphs[i].bm, &text_info->glyphs[i].bm_o,
+ &text_info->glyphs[i].bm_s, text_info->glyphs[i].be);
if (error)
text_info->glyphs[i].symbol = 0;
FT_Done_Glyph(text_info->glyphs[i].glyph);
@@ -387,6 +391,7 @@ static ass_image_t* render_text(text_info_t* text_info, int dst_x, int dst_y)
hash_val.bbox_scaled = text_info->glyphs[i].bbox;
hash_val.bm_o = text_info->glyphs[i].bm_o;
hash_val.bm = text_info->glyphs[i].bm;
+ hash_val.bm_s = text_info->glyphs[i].bm_s;
hash_val.advance.x = text_info->glyphs[i].advance.x;
hash_val.advance.y = text_info->glyphs[i].advance.y;
cache_add_glyph(&(text_info->glyphs[i].hash_key), &hash_val);
@@ -396,6 +401,18 @@ static ass_image_t* render_text(text_info_t* text_info, int dst_x, int dst_y)
for (i = 0; i < text_info->length; ++i) {
glyph_info_t* info = text_info->glyphs + i;
+ if ((info->symbol == 0) || (info->symbol == '\n') || !info->bm_s || (info->shadow == 0))
+ continue;
+
+ pen_x = dst_x + info->pos.x + info->shadow;
+ pen_y = dst_y + info->pos.y + info->shadow;
+ bm = info->bm_s;
+
+ tail = render_glyph(bm, pen_x, pen_y, info->c[3], 0, 1000000, tail);
+ }
+
+ for (i = 0; i < text_info->length; ++i) {
+ glyph_info_t* info = text_info->glyphs + i;
if ((info->symbol == 0) || (info->symbol == '\n') || !info->bm_o)
continue;
@@ -992,6 +1009,12 @@ static char* parse_tag(char* p, double pwr) {
if (render_context.effect_timing)
render_context.effect_skip_timing += render_context.effect_timing;
render_context.effect_timing = val * 10;
+ } else if (mystrcmp(&p, "shad")) {
+ int val;
+ if (mystrtoi(&p, 10, &val))
+ render_context.shadow = val;
+ else
+ render_context.shadow = render_context.style->Shadow;
}
return p;
@@ -1137,6 +1160,7 @@ static void reset_render_context(void)
render_context.scale_y = render_context.style->ScaleY;
render_context.hspacing = 0; // FIXME
render_context.be = 0;
+ render_context.shadow = render_context.style->Shadow;
// FIXME: does not reset unsupported attributes.
}
@@ -1208,6 +1232,7 @@ static int get_glyph(int index, int symbol, glyph_info_t* info, FT_Vector* advan
info->glyph = info->outline_glyph = 0;
info->bm = val->bm;
info->bm_o = val->bm_o;
+ info->bm_s = val->bm_s;
info->bbox = val->bbox_scaled;
info->advance.x = val->advance.x;
info->advance.y = val->advance.y;
@@ -1252,7 +1277,7 @@ static int get_glyph(int index, int symbol, glyph_info_t* info, FT_Vector* advan
info->outline_glyph = 0;
}
- info->bm = info->bm_o = 0;
+ info->bm = info->bm_o = info->bm_s = 0;
return 0;
}
@@ -1625,6 +1650,7 @@ static int ass_render_event(ass_event_t* event, event_images_t* event_images)
text_info.glyphs[text_info.length].asc = get_face_ascender(render_context.face);
text_info.glyphs[text_info.length].desc = get_face_descender(render_context.face);
text_info.glyphs[text_info.length].be = render_context.be;
+ text_info.glyphs[text_info.length].shadow = render_context.shadow;
text_info.length++;