uint32_t payload_type = 0;
uint32_t payload_size = 0;
uint32_t tmp;
+ GetBitContext payload_gbc;
while (show_bits(rw, 8) == 0xff) {
fixed(8, ff_byte, 0xff);
xu(8, last_payload_size_byte, tmp, 0, 254, 0);
payload_size += tmp;
+ // There must be space remaining for both the payload and
+ // the trailing bits on the SEI NAL unit.
+ if (payload_size + 1 > get_bits_left(rw) / 8) {
+ av_log(ctx->log_ctx, AV_LOG_ERROR,
+ "Invalid SEI message: payload_size too large "
+ "(%"PRIu32" bytes).\n", payload_size);
+ return AVERROR_INVALIDDATA;
+ }
+ CHECK(init_get_bits(&payload_gbc, rw->buffer,
+ get_bits_count(rw) + 8 * payload_size));
+ skip_bits_long(&payload_gbc, get_bits_count(rw));
+
CHECK(ff_cbs_sei_list_add(current));
message = ¤t->messages[k];
message->payload_type = payload_type;
message->payload_size = payload_size;
- CHECK(FUNC(message)(ctx, rw, message));
+ CHECK(FUNC(message)(ctx, &payload_gbc, message));
+
+ skip_bits_long(rw, 8 * payload_size);
if (!cbs_h2645_read_more_rbsp_data(rw))
break;