int av_dict_get_string(const AVDictionary *m, char **buffer,
const char key_val_sep, const char pairs_sep)
{
AVDictionaryEntry *t = NULL;
AVBPrint bprint;
int cnt = 0;
char special_chars[] = {pairs_sep, key_val_sep, '\0'};
if (!buffer || pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
pairs_sep == '\\' || key_val_sep == '\\')
return AVERROR(EINVAL);
if (!av_dict_count(m)) {
*buffer = av_strdup("");
return *buffer ? 0 : AVERROR(ENOMEM);
}
av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
if (cnt++)
av_bprint_append_data(&bprint, &pairs_sep, 1);
av_bprint_escape(&bprint, t->key, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
av_bprint_append_data(&bprint, &key_val_sep, 1);
av_bprint_escape(&bprint, t->value, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
}
return av_bprint_finalize(&bprint, buffer);
}
int av_bprint_fd_contents(AVBPrint *pb, int fd)
{
int ret;
char buf[1024];
while (1) {
ret = read(fd, buf, sizeof(buf));
if (!ret)
return 0;
else if (ret < 0)
return AVERROR(errno);
av_bprint_append_data(pb, buf, ret);
if (!av_bprint_is_complete(pb))
return AVERROR(ENOMEM);
}
}
static void mov_text_new_line_cb(void *priv, int forced)
{
MovTextContext *s = priv;
av_bprint_append_data(&s->buffer, "\n", 1);
s->text_pos += 1;
}
static void mov_text_text_cb(void *priv, const char *text, int len)
{
MovTextContext *s = priv;
av_bprint_append_data(&s->buffer, text, len);
s->text_pos += len;
}
