Move fonts-related code to a separate file.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@21293 b3059339-0415-0410-9bf9-f77b7e298cf2

6 files changed, 197 insertions, 69 deletions

diff --git a/libass/Makefile b/libass/Makefile
index 9a7ddde92d..32952a06f5 100644
--- a/libass/Makefile
+++ b/libass/Makefile
@@ -11,6 +11,7 @@ SRCS = ass.c \
        ass_mp.c \
        ass_bitmap.c \
        ass_library.c \
+       ass_font.c \
 
 CFLAGS  = -I../libmpcodecs -D_GNU_SOURCE
 
diff --git a/libass/ass_cache.c b/libass/ass_cache.c
index e4d41e45b0..e3ef630708 100644
--- a/libass/ass_cache.c
+++ b/libass/ass_cache.c
@@ -30,6 +30,7 @@
 #include "ass_fontconfig.h"
 #include "ass_bitmap.h"
 #include "ass_cache.h"
+#include "ass_font.h"
 
 #define MAX_FONT_CACHE_SIZE 100
 
@@ -49,24 +50,6 @@ static int font_compare(ass_font_desc_t* a, ass_font_desc_t* b) {
 }
 
 /**
- * Select Microfost Unicode CharMap, if the font has one.
- * Otherwise, let FreeType decide.
- */
-static void charmap_magic(FT_Face face)
-{
-	int i;
-	for (i = 0; i < face->num_charmaps; ++i) {
-		FT_CharMap cmap = face->charmaps[i];
-		unsigned pid = cmap->platform_id;
-		unsigned eid = cmap->encoding_id;
-		if (pid == 3 /*microsoft*/ && (eid == 1 /*unicode bmp*/ || eid == 10 /*full unicode*/)) {
-			FT_Set_Charmap(face, cmap);
-			break;
-		}
-	}
-}
-
-/**
  * \brief Get a face object, either from cache or created through FreeType+FontConfig.
  * \param library FreeType library object
  * \param fontconfig_priv fontconfig private data
@@ -75,12 +58,9 @@ static void charmap_magic(FT_Face face)
 */ 
 ass_font_t* ass_new_font(FT_Library library, void* fontconfig_priv, ass_font_desc_t* desc)
 {
-	FT_Error error;
 	int i;
-	char* path;
-	int index;
 	ass_font_t* item;
-	FT_Face face;
+	int error;
 	
 	for (i=0; i<font_cache_size; ++i)
 		if (font_compare(desc, &(font_cache[i].desc)))
@@ -91,24 +71,12 @@ ass_font_t* ass_new_font(FT_Library library, void* fontconfig_priv, ass_font_des
 		return 0;
 	}
 
-	path = fontconfig_select(fontconfig_priv, desc->family, desc->bold, desc->italic, &index);
-	
-	error = FT_New_Face(library, path, index, &face);
-	if (error) {
-		if (!no_more_font_messages)
-			mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorOpeningFont, path, index);
-		no_more_font_messages = 1;
-		return 0;
-	}
-
-	charmap_magic(face);
-	
 	item = font_cache + font_cache_size;
-	item->path = strdup(path);
-	item->index = index;
-	item->face = face;
-	memcpy(&(item->desc), desc, sizeof(ass_font_desc_t));
+	error = ass_font_init(library, fontconfig_priv, item, desc);
+	if (error) // FIXME: mp_msg
+		return 0;
 	font_cache_size++;
+
 	return item;
 }
 
@@ -123,9 +91,7 @@ void ass_font_cache_done(void)
 	int i;
 	for (i = 0; i < font_cache_size; ++i) {
 		ass_font_t* item = font_cache + i;
-		if (item->face) FT_Done_Face(item->face);
-		if (item->path) free(item->path);
-		// FIXME: free desc ?
+		ass_font_free(item);
 	}
 	free(font_cache);
 	font_cache_size = 0;
diff --git a/libass/ass_cache.h b/libass/ass_cache.h
index 9609547955..4fd5f79463 100644
--- a/libass/ass_cache.h
+++ b/libass/ass_cache.h
@@ -38,6 +38,9 @@ typedef struct ass_font_s {
 	char* path;
 	int index;
 	FT_Face face;
+	FT_Matrix m; // current transformation
+	FT_Vector v; // current shift
+	int size;
 } ass_font_t;
 
 void ass_font_cache_init(void);
diff --git a/libass/ass_font.c b/libass/ass_font.c
new file mode 100644
index 0000000000..5778935d6b
--- /dev/null
+++ b/libass/ass_font.c
@@ -0,0 +1,139 @@
+// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
+// vim:ts=8:sw=8:noet:ai:
+/*
+  Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
+
+  This program 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.
+
+  This program 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 this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#include "config.h"
+
+#include <inttypes.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_SYNTHESIS_H
+#include FT_GLYPH_H
+
+#include "ass_font.h"
+#include "ass_fontconfig.h"
+#include "mputils.h"
+
+extern int no_more_font_messages;
+
+/**
+ * Select Microfost Unicode CharMap, if the font has one.
+ * Otherwise, let FreeType decide.
+ */
+static void charmap_magic(FT_Face face)
+{
+	int i;
+	for (i = 0; i < face->num_charmaps; ++i) {
+		FT_CharMap cmap = face->charmaps[i];
+		unsigned pid = cmap->platform_id;
+		unsigned eid = cmap->encoding_id;
+		if (pid == 3 /*microsoft*/ && (eid == 1 /*unicode bmp*/ || eid == 10 /*full unicode*/)) {
+			FT_Set_Charmap(face, cmap);
+			break;
+		}
+	}
+}
+
+int ass_font_init(FT_Library ftlibrary, void* fc_priv, ass_font_t* font, ass_font_desc_t* desc)
+{
+	char* path;
+	int index;
+	FT_Face face;
+	int error;
+	
+	path = fontconfig_select(fc_priv, desc->family, desc->bold, desc->italic, &index);
+	
+	error = FT_New_Face(ftlibrary, path, index, &face);
+	if (error) {
+		if (!no_more_font_messages)
+			mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorOpeningFont, path, index);
+		no_more_font_messages = 1;
+		return 1;
+	}
+
+	charmap_magic(face);
+	
+	font->path = strdup(path);
+	font->index = index;
+	font->face = face;
+	font->desc.family = strdup(desc->family);
+	font->desc.bold = desc->bold;
+	font->desc.italic = desc->italic;
+
+	font->m.xx = font->m.yy = (FT_Fixed)0x10000L;
+	font->m.xy = font->m.yy = 0;
+	font->v.x = font->v.y = 0;
+
+	return 0;
+}
+
+void ass_font_set_transform(ass_font_t* font, FT_Matrix* m, FT_Vector* v)
+{
+	font->m.xx = m->xx;
+	font->m.xy = m->xy;
+	font->m.yx = m->yx;
+	font->m.yy = m->yy;
+	font->v.x = v->x;
+	font->v.y = v->y;
+	FT_Set_Transform(font->face, &font->m, &font->v);
+}
+
+void ass_font_set_size(ass_font_t* font, int size)
+{
+	font->size = size;
+	FT_Set_Pixel_Sizes(font->face, 0, size);
+}
+
+FT_Glyph ass_font_get_glyph(void* fontconfig_priv, ass_font_t* font, uint32_t ch)
+{
+	int error;
+	int index;
+	FT_Glyph glyph;
+	
+	index = FT_Get_Char_Index(font->face, ch);
+	error = FT_Load_Glyph(font->face, index, FT_LOAD_NO_BITMAP );
+	if (error) {
+		mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorLoadingGlyph);
+		return 0;
+	}
+	
+#if (FREETYPE_MAJOR > 2) || \
+    ((FREETYPE_MAJOR == 2) && (FREETYPE_MINOR >= 2)) || \
+    ((FREETYPE_MAJOR == 2) && (FREETYPE_MINOR == 1) && (FREETYPE_PATCH >= 10))
+// FreeType >= 2.1.10 required
+	if (!(font->face->style_flags & FT_STYLE_FLAG_ITALIC) && 
+			(font->desc.italic > 55)) {
+		FT_GlyphSlot_Oblique(font->face->glyph);
+	}
+#endif
+	error = FT_Get_Glyph(font->face->glyph, &glyph);
+	if (error) {
+		mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorLoadingGlyph);
+		return 0;
+	}
+	
+	return glyph;
+}
+
+void ass_font_free(ass_font_t* font)
+{
+	if (font->face) FT_Done_Face(font->face);
+	if (font->path) free(font->path);
+	if (font->desc.family) free(font->desc.family);
+}
diff --git a/libass/ass_font.h b/libass/ass_font.h
new file mode 100644
index 0000000000..0e5998ca60
--- /dev/null
+++ b/libass/ass_font.h
@@ -0,0 +1,38 @@
+// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
+// vim:ts=8:sw=8:noet:ai:
+/*
+  Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
+
+  This program 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.
+
+  This program 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 this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifndef __ASS_FONT_H__
+#define __ASS_FONT_H__
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_STROKER_H
+#include FT_GLYPH_H
+
+#include "ass_bitmap.h"
+#include "ass_cache.h"
+
+int ass_font_init(FT_Library ftlibrary, void* fc_priv, ass_font_t* font, ass_font_desc_t* desc);
+void ass_font_set_transform(ass_font_t* font, FT_Matrix* m, FT_Vector* v);
+void ass_font_set_size(ass_font_t* font, int size);
+FT_Glyph ass_font_get_glyph(void* fontconfig_priv, ass_font_t* font, uint32_t ch);
+void ass_font_free(ass_font_t* font);
+
+#endif
diff --git a/libass/ass_render.c b/libass/ass_render.c
index 01571d28a5..5175219c98 100644
--- a/libass/ass_render.c
+++ b/libass/ass_render.c
@@ -37,6 +37,7 @@
 #include "ass_utils.h"
 #include "ass_fontconfig.h"
 #include "ass_library.h"
+#include "ass_font.h"
 
 #define MAX_GLYPHS 1000
 #define MAX_LINES 100
@@ -535,8 +536,8 @@ static void change_font_size(int sz)
 		size = 1;
 	else if (size > frame_context.height * 2)
 		size = frame_context.height * 2;
-	
-	FT_Set_Pixel_Sizes(render_context.font->face, 0, size);
+
+	ass_font_set_size(render_context.font, size);
 
 	render_context.font_size = sz;
 }
@@ -1232,27 +1233,10 @@ static int get_glyph(int index, int symbol, glyph_info_t* info, FT_Vector* advan
 
 	// not found, get a new outline glyph from face
 //	mp_msg(MSGT_ASS, MSGL_INFO, "miss, index = %d, symbol = %c, adv = (%d, %d)\n", index, symbol, advance->x, advance->y);
-	
-	error = FT_Load_Glyph(render_context.font->face, index, FT_LOAD_NO_BITMAP );
-	if (error) {
-		mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorLoadingGlyph);
-		return error;
-	}
-	
-#if (FREETYPE_MAJOR > 2) || \
-    ((FREETYPE_MAJOR == 2) && (FREETYPE_MINOR >= 2)) || \
-    ((FREETYPE_MAJOR == 2) && (FREETYPE_MINOR == 1) && (FREETYPE_PATCH >= 10))
-// FreeType >= 2.1.10 required
-	if (!(render_context.font->face->style_flags & FT_STYLE_FLAG_ITALIC) && 
-			((render_context.italic == 1) || (render_context.italic > 55))) {
-		FT_GlyphSlot_Oblique(render_context.font->face->glyph);
-	}
-#endif
-	error = FT_Get_Glyph(render_context.font->face->glyph, &(info->glyph));
-	if (error) {
-		mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorLoadingGlyph);
-		return error;
-	}
+
+	info->glyph = ass_font_get_glyph(frame_context.ass_priv->fontconfig_priv, render_context.font, symbol);
+	if (!info->glyph)
+		return 0;
 
 	info->advance.x = info->glyph->advance.x >> 10;
 	info->advance.y = info->glyph->advance.y >> 10;
@@ -1633,17 +1617,14 @@ static int ass_render_event(ass_event_t* event, event_images_t* event_images)
 		shift.x = pen.x & 63;
 		shift.y = pen.y & 63;
 
-		if ((render_context.scale_x != 1.) || (render_context.scale_y != 1.) ||
-				(frame_context.font_scale_x != 1.)) {
+		{
 			FT_Matrix matrix;
 			matrix.xx = (FT_Fixed)( render_context.scale_x * frame_context.font_scale_x * 0x10000L );
 			matrix.xy = (FT_Fixed)( 0 * 0x10000L );
 			matrix.yx = (FT_Fixed)( 0 * 0x10000L );
 			matrix.yy = (FT_Fixed)( render_context.scale_y * 0x10000L );
 
-			FT_Set_Transform( render_context.font->face, &matrix, &shift );
-		} else {
-			FT_Set_Transform(render_context.font->face, 0, &shift);
+			ass_font_set_transform(render_context.font, &matrix, &shift );
 		}
 		
 		error = get_glyph(glyph_index, code, text_info.glyphs + text_info.length, &shift);