}
/* Return the number of bytes written. */
-int ff_rac_terminate(RangeCoder *c)
+int ff_rac_terminate(RangeCoder *c, int version)
{
+ if (version == 1)
+ put_rac(c, (uint8_t[]) { 129 }, 0);
c->range = 0xFF;
c->low += 0xFF;
renorm_encoder(c);
return c->bytestream - c->bytestream_start;
}
+
+int ff_rac_check_termination(RangeCoder *c, int version)
+{
+ if (version == 1) {
+ RangeCoder tmp = *c;
+ get_rac(c, (uint8_t[]) { 129 });
+
+ if (c->bytestream == tmp.bytestream && c->bytestream > c->bytestream_start)
+ tmp.low -= *--tmp.bytestream;
+ tmp.bytestream_end = tmp.bytestream;
+
+ if (get_rac(&tmp, (uint8_t[]) { 129 }))
+ return AVERROR_INVALIDDATA;
+ } else {
+ if (c->bytestream_end != c->bytestream)
+ return AVERROR_INVALIDDATA;
+ }
+ return 0;
+}