swf_tag_t *swf_tag_create(bitstream_t *bs) {
swf_tag_t *tag = NULL;
unsigned short tag_and_length;
if (bs == NULL) {
fprintf(stderr, "swf_tag_create: bs == NULL\n");
return NULL;
}
tag_and_length = bitstream_getbytesLE(bs, 2);
if (tag_and_length == (unsigned short) -1) {
fprintf(stderr, "swf_tag_create: tag_and_length(short) == -1\n");
return NULL;
}
tag = calloc(sizeof(*tag), 1);
tag->code = tag_and_length >> 6;
tag->length = tag_and_length & 0x3f;
tag->length_longformat = 0;
if (tag->length == 0x3f) {
tag->length = bitstream_getbytesLE(bs, 4);
if (tag_and_length == (unsigned short) -1) {
fprintf(stderr, "swf_tag_create: tag_and_length(long) == -1\n");
free(tag);
return NULL;
}
tag->length_longformat = 1;
}
// printf("XXX: malloc length=%d\n", tag->length);
tag->data = malloc(tag->length);
bitstream_getstring(bs, tag->data, tag->length);
tag->detail = NULL;
return tag;
}
int
swf_action_parse(bitstream_t *bs, swf_action_t *act) {
unsigned long offset;
bitstream_align(bs);
act->action_id = bitstream_getbyte(bs);
if (act->action_id & 0x80) {
act->action_length = bitstream_getbytesLE(bs, 2);
offset = bitstream_getbytepos(bs);
act->action_data = malloc(act->action_length);
if (act->action_data == NULL) {
fprintf(stderr, "Can't alloc memory for act->action_data\n");
return 1;
}
bitstream_getstring(bs, act->action_data, act->action_length);
}
return 0;
}
