+ if (buf == NULL && stream->callback != buf_read)
+ {
+ /* Skip input bytes */
+ uint8_t tmp[16];
+ while (count > 16)
+ {
+ if (!pb_read(stream, tmp, 16))
+ return false;
+
+ count -= 16;
+ }
+
+ return pb_read(stream, tmp, count);
+ }
+
+ if (stream->bytes_left < count)
+ PB_RETURN_ERROR(stream, "end-of-stream");