/*
=============================================================================
buffer handling
=============================================================================
*/
static MIDIHDR *allocate_buffer(long data_size)
{
LPMIDIHDR hdr = (LPMIDIHDR) pm_alloc(MIDIHDR_SYSEX_SIZE(data_size));
MIDIEVENT *evt;
if (!hdr) return NULL;
evt = (MIDIEVENT *) (hdr + 1); /* place MIDIEVENT after header */
hdr->lpData = (LPSTR) evt;
hdr->dwBufferLength = MIDIHDR_SYSEX_BUFFER_LENGTH(data_size);
hdr->dwBytesRecorded = 0;
hdr->dwFlags = 0;
hdr->dwUser = hdr->dwBufferLength;
return hdr;
}
static MIDIHDR *allocate_sysex_buffer(long data_size)
{
/* we're actually allocating more than data_size because the buffer
* will include the MIDIEVENT header in addition to the data
*/
LPMIDIHDR hdr = (LPMIDIHDR) pm_alloc(MIDIHDR_SYSEX_SIZE(data_size));
MIDIEVENT *evt;
if (!hdr) return NULL;
evt = (MIDIEVENT *) (hdr + 1); /* place MIDIEVENT after header */
hdr->lpData = (LPSTR) evt;
hdr->dwFlags = 0;
hdr->dwUser = 0;
return hdr;
}