146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/*
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* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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*
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* This file is part of libass.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "config.h"
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include "ass.h"
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#include "ass_library.h"
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#include "ass_utils.h"
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static void ass_msg_handler(int level, const char *fmt, va_list va, void *data)
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{
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if (level > MSGL_INFO)
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return;
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fprintf(stderr, "[ass] ");
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vfprintf(stderr, fmt, va);
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fprintf(stderr, "\n");
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}
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ASS_Library *ass_library_init(void)
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{
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ASS_Library* lib = calloc(1, sizeof(*lib));
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lib->msg_callback = ass_msg_handler;
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return lib;
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}
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void ass_library_done(ASS_Library *priv)
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{
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if (priv) {
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ass_set_fonts_dir(priv, NULL);
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ass_set_style_overrides(priv, NULL);
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ass_clear_fonts(priv);
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free(priv);
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}
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}
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void ass_set_fonts_dir(ASS_Library *priv, const char *fonts_dir)
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{
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free(priv->fonts_dir);
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priv->fonts_dir = fonts_dir ? strdup(fonts_dir) : 0;
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}
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void ass_set_extract_fonts(ASS_Library *priv, int extract)
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{
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priv->extract_fonts = !!extract;
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}
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void ass_set_style_overrides(ASS_Library *priv, char **list)
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{
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char **p;
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char **q;
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int cnt;
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if (priv->style_overrides) {
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for (p = priv->style_overrides; *p; ++p)
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free(*p);
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}
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free(priv->style_overrides);
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if (!list)
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return;
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for (p = list, cnt = 0; *p; ++p, ++cnt) {
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}
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priv->style_overrides = malloc((cnt + 1) * sizeof(char *));
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for (p = list, q = priv->style_overrides; *p; ++p, ++q)
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*q = strdup(*p);
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priv->style_overrides[cnt] = NULL;
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}
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static void grow_array(void **array, int nelem, size_t elsize)
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{
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if (!(nelem & 31))
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*array = realloc(*array, (nelem + 32) * elsize);
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}
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void ass_add_font(ASS_Library *priv, char *name, char *data, int size)
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{
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int idx = priv->num_fontdata;
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if (!name || !data || !size)
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return;
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grow_array((void **) &priv->fontdata, priv->num_fontdata,
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sizeof(*priv->fontdata));
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priv->fontdata[idx].name = strdup(name);
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priv->fontdata[idx].data = malloc(size);
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memcpy(priv->fontdata[idx].data, data, size);
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priv->fontdata[idx].size = size;
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priv->num_fontdata++;
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}
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void ass_clear_fonts(ASS_Library *priv)
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{
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int i;
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for (i = 0; i < priv->num_fontdata; ++i) {
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free(priv->fontdata[i].name);
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free(priv->fontdata[i].data);
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}
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free(priv->fontdata);
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priv->fontdata = NULL;
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priv->num_fontdata = 0;
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}
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/*
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* Register a message callback function with libass. Without setting one,
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* a default handler is used which prints everything with MSGL_INFO or
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* higher to the standard output.
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*
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* \param msg_cb the callback function
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* \param data additional data that will be passed to the callback
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*/
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void ass_set_message_cb(ASS_Library *priv,
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void (*msg_cb)(int, const char *, va_list, void *),
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void *data)
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{
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if (msg_cb) {
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priv->msg_callback = msg_cb;
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priv->msg_callback_data = data;
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}
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}
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