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/*
* 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 <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "ass.h"
#include "ass_library.h"
#include "ass_utils.h"
static void ass_msg_handler(int level, const char *fmt, va_list va, void *data)
{
if (level > MSGL_INFO)
return;
fprintf(stderr, "[ass] ");
vfprintf(stderr, fmt, va);
fprintf(stderr, "\n");
}
ASS_Library *ass_library_init(void)
{
ASS_Library* lib = calloc(1, sizeof(*lib));
lib->msg_callback = ass_msg_handler;
return lib;
}
void ass_library_done(ASS_Library *priv)
{
if (priv) {
ass_set_fonts_dir(priv, NULL);
ass_set_style_overrides(priv, NULL);
ass_clear_fonts(priv);
free(priv);
}
}
void ass_set_fonts_dir(ASS_Library *priv, const char *fonts_dir)
{
if (priv->fonts_dir)
free(priv->fonts_dir);
priv->fonts_dir = fonts_dir ? strdup(fonts_dir) : 0;
}
void ass_set_extract_fonts(ASS_Library *priv, int extract)
{
priv->extract_fonts = !!extract;
}
void ass_set_style_overrides(ASS_Library *priv, char **list)
{
char **p;
char **q;
int cnt;
if (priv->style_overrides) {
for (p = priv->style_overrides; *p; ++p)
free(*p);
free(priv->style_overrides);
}
if (!list)
return;
for (p = list, cnt = 0; *p; ++p, ++cnt) {
}
priv->style_overrides = malloc((cnt + 1) * sizeof(char *));
for (p = list, q = priv->style_overrides; *p; ++p, ++q)
*q = strdup(*p);
priv->style_overrides[cnt] = NULL;
}
static void grow_array(void **array, int nelem, size_t elsize)
{
if (!(nelem & 31))
*array = realloc(*array, (nelem + 32) * elsize);
}
void ass_add_font(ASS_Library *priv, char *name, char *data, int size)
{
int idx = priv->num_fontdata;
if (!name || !data || !size)
return;
grow_array((void **) &priv->fontdata, priv->num_fontdata,
sizeof(*priv->fontdata));
priv->fontdata[idx].name = strdup(name);
priv->fontdata[idx].data = malloc(size);
memcpy(priv->fontdata[idx].data, data, size);
priv->fontdata[idx].size = size;
priv->num_fontdata++;
}
void ass_clear_fonts(ASS_Library *priv)
{
int i;
for (i = 0; i < priv->num_fontdata; ++i) {
free(priv->fontdata[i].name);
free(priv->fontdata[i].data);
}
free(priv->fontdata);
priv->fontdata = NULL;
priv->num_fontdata = 0;
}
/*
* Register a message callback function with libass. Without setting one,
* a default handler is used which prints everything with MSGL_INFO or
* higher to the standard output.
*
* \param msg_cb the callback function
* \param data additional data that will be passed to the callback
*/
void ass_set_message_cb(ASS_Library *priv,
void (*msg_cb)(int, const char *, va_list, void *),
void *data)
{
if (msg_cb) {
priv->msg_callback = msg_cb;
priv->msg_callback_data = data;
}
}
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