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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23197 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
eugeni 2007-05-01 15:54:00 +00:00
parent 22f759c04a
commit e23d5dacb7
1 changed files with 25 additions and 11 deletions
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36
libass/ass_render.c
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@ -381,8 +381,8 @@ static ass_image_t** render_glyph(bitmap_t* bm, int dst_x, int dst_y, uint32_t c
}
/**
* \brief Render text_info_t struct into ass_image_t list
* Rasterize glyphs and put them in glyph cache.
* \brief Convert text_info_t struct to ass_image_t list
* Splits glyphs in halves when needed (for \kf karaoke).
*/
static ass_image_t* render_text(text_info_t* text_info, int dst_x, int dst_y)
{
@ -1197,6 +1197,16 @@ static void free_render_context(void)
{
}
/**
* \brief Get normal and outline (border) glyphs
* \param symbol ucs4 char
* \param info out: struct filled with extracted data
* \param advance subpixel shift vector used for cache lookup
* Tries to get both glyphs from cache.
* If they can't be found, gets a glyph from font face, generates outline with FT_Stroker,
* and add them to cache.
* The glyphs are returned in info->glyph and info->outline_glyph
*/
static void get_outline_glyph(int symbol, glyph_info_t* info, FT_Vector* advance)
{
int error;
@ -1252,12 +1262,12 @@ static void get_outline_glyph(int symbol, glyph_info_t* info, FT_Vector* advance
static void transform_3d(FT_Vector shift, FT_Glyph* glyph, FT_Glyph* glyph2, double frx, double fry, double frz);
/**
* \brief Get normal and outline glyphs from cache (if possible) or font face
* \param index face glyph index
* \param symbol ucs4 char
* \param info out: struct filled with extracted data
* \param advance advance vector of the extracted glyph
* \return 0 on success
* \brief Get bitmaps for a glyph
* \param info glyph info
* Tries to get glyph bitmaps from bitmap cache.
* If they can't be found, they are generated by rotating and rendering the glyph.
* After that, bitmaps are added to the cache.
* They are returned in info->bm (glyph), info->bm_o (outline) and info->bm_s (shadow).
*/
static void get_bitmap_glyph(glyph_info_t* info)
{
@ -1277,11 +1287,13 @@ static void get_bitmap_glyph(glyph_info_t* info)
int error;
info->bm = info->bm_o = info->bm_s = 0;
if (info->glyph && info->symbol != '\n' && info->symbol != 0) {
// calculating shift vector
// calculating rotation shift vector (from rotation origin to the glyph basepoint)
shift.x = int_to_d6(info->hash_key.shift_x);
shift.y = int_to_d6(info->hash_key.shift_y);
// apply rotation
transform_3d(shift, &info->glyph, &info->outline_glyph, info->frx, info->fry, info->frz);
// render glyph
error = glyph_to_bitmap(ass_renderer->synth_priv,
info->glyph, info->outline_glyph,
&info->bm, &info->bm_o,
@ -1289,12 +1301,13 @@ static void get_bitmap_glyph(glyph_info_t* info)
if (error)
info->symbol = 0;
// cache
// add bitmaps to cache
hash_val.bm_o = info->bm_o;
hash_val.bm = info->bm;
hash_val.bm_s = info->bm_s;
cache_add_bitmap(&(info->hash_key), &hash_val);
}
// deallocate glyphs
if (info->glyph)
FT_Done_Glyph(info->glyph);
if (info->outline_glyph)
@ -1936,7 +1949,7 @@ static int ass_render_event(ass_event_t* event, event_images_t* event_images)
render_context.clip_y1 = y2scr(render_context.clip_y1);
}
// rotate glyphs if needed
// calculate rotation parameters
{
FT_Vector center;
@ -1963,6 +1976,7 @@ static int ass_render_event(ass_event_t* event, event_images_t* event_images)
}
}
// convert glyphs to bitmaps
for (i = 0; i < text_info.length; ++i)
get_bitmap_glyph(text_info.glyphs + i);