In the pb_istream_from_buffer and pb_ostream_from_buffer, memcpy was
used to transfer values to the buffer. For the common case of
count = 1-10 bytes, a simple loop is faster.
static bool checkreturn buf_read(pb_istream_t *stream, uint8_t *buf, size_t count)
{
uint8_t *source = (uint8_t*)stream->state;
+ stream->state = source + count;
if (buf != NULL)
- memcpy(buf, source, count);
+ {
+ while (count--)
+ *buf++ = *source++;
+ }
- stream->state = source + count;
return true;
}
static bool checkreturn buf_write(pb_ostream_t *stream, const uint8_t *buf, size_t count)
{
uint8_t *dest = (uint8_t*)stream->state;
- memcpy(dest, buf, count);
stream->state = dest + count;
+
+ while (count--)
+ *dest++ = *buf++;
+
return true;
}