Remove internal libass tree

Remove the libass/ directory and use the newest standalone version of
the library instead.

1 files changed, 0 insertions, 336 deletions

diff --git a/libass/ass_bitmap.c b/libass/ass_bitmap.c
deleted file mode 100644
index 302827af10..0000000000
--- a/libass/ass_bitmap.c
+++ /dev/null
@@ -1,336 +0,0 @@
-// -*- 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 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.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-#include <assert.h>
-#include <ft2build.h>
-#include FT_GLYPH_H
-
-#include "mputils.h"
-#include "ass_bitmap.h"
-
-struct ass_synth_priv_s {
-	int tmp_w, tmp_h;
-	unsigned short* tmp;
-
-	int g_r;
-	int g_w;
-
-	unsigned *g;
-	unsigned *gt2;
-
-	double radius;
-};
-
-static const unsigned int maxcolor = 255;
-static const unsigned base = 256;
-
-static int generate_tables(ass_synth_priv_t* priv, double radius)
-{
-	double A = log(1.0/base)/(radius*radius*2);
-	int mx, i;
-	double volume_diff, volume_factor = 0;
-	unsigned volume;
-
-	if (priv->radius == radius)
-		return 0;
-	else
-		priv->radius = radius;
-
-	priv->g_r = ceil(radius);
-	priv->g_w = 2*priv->g_r+1;
-
-	if (priv->g_r) {
-		priv->g = realloc(priv->g, priv->g_w * sizeof(unsigned));
-		priv->gt2 = realloc(priv->gt2, 256 * priv->g_w * sizeof(unsigned));
-		if (priv->g==NULL || priv->gt2==NULL) {
-			return -1;
-		}
-	}
-
-	if (priv->g_r) {
-		// gaussian curve with volume = 256
-		for (volume_diff=10000000; volume_diff>0.0000001; volume_diff*=0.5){
-			volume_factor+= volume_diff;
-			volume=0;
-			for (i = 0; i<priv->g_w; ++i) {
-				priv->g[i] = (unsigned)(exp(A * (i-priv->g_r)*(i-priv->g_r)) * volume_factor + .5);
-				volume+= priv->g[i];
-			}
-			if(volume>256) volume_factor-= volume_diff;
-		}
-		volume=0;
-		for (i = 0; i<priv->g_w; ++i) {
-			priv->g[i] = (unsigned)(exp(A * (i-priv->g_r)*(i-priv->g_r)) * volume_factor + .5);
-			volume+= priv->g[i];
-		}
-
-		// gauss table:
-		for(mx=0;mx<priv->g_w;mx++){
-			for(i=0;i<256;i++){
-				priv->gt2[mx+i*priv->g_w] = i*priv->g[mx];
-			}
-		}
-	}
-
-	return 0;
-}
-
-static void resize_tmp(ass_synth_priv_t* priv, int w, int h)
-{
-	if (priv->tmp_w >= w && priv->tmp_h >= h)
-		return;
-	if (priv->tmp_w == 0)
-		priv->tmp_w = 64;
-	if (priv->tmp_h == 0)
-		priv->tmp_h = 64;
-	while (priv->tmp_w < w) priv->tmp_w *= 2;
-	while (priv->tmp_h < h) priv->tmp_h *= 2;
-	if (priv->tmp)
-		free(priv->tmp);
-	priv->tmp = malloc((priv->tmp_w + 1) * priv->tmp_h * sizeof(short));
-}
-
-ass_synth_priv_t* ass_synth_init(double radius)
-{
-	ass_synth_priv_t* priv = calloc(1, sizeof(ass_synth_priv_t));
-	generate_tables(priv, radius);
-	return priv;
-}
-
-void ass_synth_done(ass_synth_priv_t* priv)
-{
-	if (priv->tmp)
-		free(priv->tmp);
-	if (priv->g)
-		free(priv->g);
-	if (priv->gt2)
-		free(priv->gt2);
-	free(priv);
-}
-
-static bitmap_t* alloc_bitmap(int w, int h)
-{
-	bitmap_t* bm;
-	bm = calloc(1, sizeof(bitmap_t));
-	bm->buffer = malloc(w*h);
-	bm->w = w;
-	bm->h = h;
-	bm->left = bm->top = 0;
-	return bm;
-}
-
-void ass_free_bitmap(bitmap_t* bm)
-{
-	if (bm) {
-		if (bm->buffer) free(bm->buffer);
-		free(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 int check_glyph_area(FT_Glyph glyph)
-{
-	FT_BBox bbox;
-	long long dx, dy;
-	FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_TRUNCATE, &bbox);
-	dx = bbox.xMax - bbox.xMin;
-	dy = bbox.yMax - bbox.yMin;
-	if (dx * dy > 8000000) {
-		mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_GlyphBBoxTooLarge, (int)dx, (int)dy);
-		return 1;
-	} else
-		return 0;
-}
-
-static bitmap_t* glyph_to_bitmap_internal(FT_Glyph glyph, int bord)
-{
-	FT_BitmapGlyph bg;
-	FT_Bitmap* bit;
-	bitmap_t* bm;
-	int w, h;
-	unsigned char* src;
-	unsigned char* dst;
-	int i;
-	int error;
-
-	if (check_glyph_area(glyph))
-		return 0;
-	error = FT_Glyph_To_Bitmap(&glyph, FT_RENDER_MODE_NORMAL, 0, 0);
-	if (error) {
-		mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FT_Glyph_To_BitmapError, error);
-		return 0;
-	}
-
-	bg = (FT_BitmapGlyph)glyph;
-	bit = &(bg->bitmap);
-	if (bit->pixel_mode != FT_PIXEL_MODE_GRAY) {
-		mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_UnsupportedPixelMode, (int)(bit->pixel_mode));
-		FT_Done_Glyph(glyph);
-		return 0;
-	}
-
-	w = bit->width;
-	h = bit->rows;
-	bm = alloc_bitmap(w + 2*bord, h + 2*bord);
-	memset(bm->buffer, 0, bm->w * bm->h);
-	bm->left = bg->left - bord;
-	bm->top = - bg->top - bord;
-
-	src = bit->buffer;
-	dst = bm->buffer + bord + bm->w * bord;
-	for (i = 0; i < h; ++i) {
-		memcpy(dst, src, w);
-		src += bit->pitch;
-		dst += bm->w;
-	}
-
-	FT_Done_Glyph(glyph);
-	return bm;
-}
-
-/**
- * \brief fix outline bitmap and generate shadow bitmap
- * Two things are done here:
- * 1. Glyph bitmap is subtracted from outline bitmap. This way looks much better in some cases.
- * 2. Shadow bitmap is created as a sum of glyph and outline bitmaps.
- */
-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) {
-			unsigned char c_g, c_o;
-			c_g = g[x];
-			c_o = o[x];
-			o[x] = (c_o > c_g) ? c_o - (c_g/2) : 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;
-}
-
-/**
- * \brief Blur with [[1,2,1]. [2,4,2], [1,2,1]] kernel
- * This blur is the same as the one employed by vsfilter.
- */
-static void be_blur(unsigned char *buf, int w, int h) {
-	unsigned int x, y;
-	unsigned int old_sum, new_sum;
-
-	for (y=0; y<h; y++) {
-		old_sum = 2 * buf[y*w];
-		for (x=0; x<w-1; x++) {
-			new_sum = buf[y*w+x] + buf[y*w+x+1];
-			buf[y*w+x] = (old_sum + new_sum) >> 2;
-			old_sum = new_sum;
-		}
-	}
-
-	for (x=0; x<w; x++) {
-		old_sum = 2 * buf[x];
-		for (y=0; y<h-1; y++) {
-			new_sum = buf[y*w+x] + buf[(y+1)*w+x];
-			buf[y*w+x] = (old_sum + new_sum) >> 2;
-			old_sum = new_sum;
-		}
-	}
-}
-
-int glyph_to_bitmap(ass_synth_priv_t* priv_blur,
-		FT_Glyph glyph, FT_Glyph outline_glyph, bitmap_t** bm_g,
-		bitmap_t** bm_o, bitmap_t** bm_s, int be, double blur_radius)
-{
-	int bord = be ? (be/4+1) : 0;
-	blur_radius *= 2;
-	bord = (blur_radius > 0.0) ? blur_radius : bord;
-
-	assert(bm_g && bm_o && bm_s);
-
-	*bm_g = *bm_o = *bm_s = 0;
-
-	if (glyph)
-		*bm_g = glyph_to_bitmap_internal(glyph, bord);
-	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;
-		}
-	}
-	if (*bm_o)
-		resize_tmp(priv_blur, (*bm_o)->w, (*bm_o)->h);
-	resize_tmp(priv_blur, (*bm_g)->w, (*bm_g)->h);
-
-	if (be) {
-		while (be--) {
-			if (*bm_o)
-				be_blur((*bm_o)->buffer, (*bm_o)->w, (*bm_o)->h);
-			else
-				be_blur((*bm_g)->buffer, (*bm_g)->w, (*bm_g)->h);
-		}
-	} else {
-		if (blur_radius > 0.0) {
-			generate_tables(priv_blur, blur_radius);
-			if (*bm_o)
-				blur((*bm_o)->buffer, priv_blur->tmp, (*bm_o)->w, (*bm_o)->h, (*bm_o)->w, (int*)priv_blur->gt2, priv_blur->g_r, priv_blur->g_w);
-			else
-				blur((*bm_g)->buffer, priv_blur->tmp, (*bm_g)->w, (*bm_g)->h, (*bm_g)->w, (int*)priv_blur->gt2, priv_blur->g_r, priv_blur->g_w);
-		}
-	}
-	if (*bm_o)
-		*bm_s = fix_outline_and_shadow(*bm_g, *bm_o);
-	else
-		*bm_s = copy_bitmap(*bm_g);
-
-	assert(bm_s);
-	return 0;
-}