2010-07-18 20:28:15 +00:00
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/*
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* This code handles HMP files. It can:
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* - Open/read/close HMP files
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* - Play HMP via Windows MIDI
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* - Convert HMP to MIDI for further use
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* Based on work of Arne de Bruijn and the JFFEE project
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*/
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#include <string.h>
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2006-03-20 17:12:09 +00:00
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#include <stdlib.h>
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2010-07-18 20:28:15 +00:00
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#include <stdio.h>
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2010-09-17 10:44:21 +00:00
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2010-07-18 20:28:15 +00:00
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#include "hmp.h"
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#include "u_mem.h"
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2006-03-20 17:12:09 +00:00
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#include "cfile.h"
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2010-07-18 20:28:15 +00:00
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#ifdef WORDS_BIGENDIAN
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#define MIDIINT(x) (x)
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#define MIDISHORT(x) (x)
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#else
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#define MIDIINT(x) SWAPINT(x)
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#define MIDISHORT(x) SWAPSHORT(x)
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2006-03-20 17:12:09 +00:00
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#endif
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2010-07-19 17:05:41 +00:00
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#ifdef _WIN32
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void hmp_stop(hmp_file *hmp);
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#endif
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2010-07-18 20:28:15 +00:00
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// READ/OPEN/CLOSE HMP
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2010-07-19 17:05:41 +00:00
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2010-07-18 20:28:15 +00:00
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void hmp_close(hmp_file *hmp)
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{
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int i;
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2006-03-20 17:12:09 +00:00
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2010-07-18 20:28:15 +00:00
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#ifdef _WIN32
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hmp_stop(hmp);
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#endif
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for (i = 0; i < hmp->num_trks; i++)
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if (hmp->trks[i].data)
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d_free(hmp->trks[i].data);
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d_free(hmp);
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}
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2006-03-20 17:12:09 +00:00
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hmp_file *hmp_open(const char *filename) {
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int i;
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char buf[256];
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long data;
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CFILE *fp;
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hmp_file *hmp;
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int num_tracks;
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unsigned char *p;
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if (!(fp = cfopen((char *)filename, "rb")))
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return NULL;
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2008-10-16 17:27:02 +00:00
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hmp = d_malloc(sizeof(hmp_file));
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2006-03-20 17:12:09 +00:00
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if (!hmp) {
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cfclose(fp);
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return NULL;
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}
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memset(hmp, 0, sizeof(*hmp));
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if ((cfread(buf, 1, 8, fp) != 8) || (memcmp(buf, "HMIMIDIP", 8)))
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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}
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2006-03-20 17:12:09 +00:00
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if (cfseek(fp, 0x30, SEEK_SET))
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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}
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2006-03-20 17:12:09 +00:00
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if (cfread(&num_tracks, 4, 1, fp) != 1)
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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}
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2006-03-20 17:12:09 +00:00
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if ((num_tracks < 1) || (num_tracks > HMP_TRACKS))
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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}
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2006-03-20 17:12:09 +00:00
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hmp->num_trks = num_tracks;
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2010-07-18 20:28:15 +00:00
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hmp->tempo = 120;
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2006-03-20 17:12:09 +00:00
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if (cfseek(fp, 0x308, SEEK_SET))
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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}
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2006-03-20 17:12:09 +00:00
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2010-07-18 20:28:15 +00:00
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for (i = 0; i < num_tracks; i++) {
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2006-03-20 17:12:09 +00:00
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if ((cfseek(fp, 4, SEEK_CUR)) || (cfread(&data, 4, 1, fp) != 1))
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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}
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2006-03-20 17:12:09 +00:00
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data -= 12;
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hmp->trks[i].len = data;
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2008-10-16 17:27:02 +00:00
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if (!(p = hmp->trks[i].data = d_malloc(data)))
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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2006-03-20 17:12:09 +00:00
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}
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2010-07-18 20:28:15 +00:00
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/* finally, read track data */
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2006-03-20 17:12:09 +00:00
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if ((cfseek(fp, 4, SEEK_CUR)) || (cfread(p, data, 1, fp) != 1))
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2010-07-18 20:28:15 +00:00
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{
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cfclose(fp);
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hmp_close(hmp);
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return NULL;
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}
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}
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cfclose(fp);
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return hmp;
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2006-03-20 17:12:09 +00:00
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}
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2010-07-18 20:28:15 +00:00
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#ifdef WIN32
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// PLAY HMP AS MIDI
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void hmp_stop(hmp_file *hmp)
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{
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2006-03-20 17:12:09 +00:00
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MIDIHDR *mhdr;
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if (!hmp->stop) {
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hmp->stop = 1;
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//PumpMessages();
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midiStreamStop(hmp->hmidi);
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2010-07-18 20:28:15 +00:00
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while (hmp->bufs_in_mm)
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2006-03-20 17:12:09 +00:00
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Sleep(0);
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}
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while ((mhdr = hmp->evbuf)) {
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midiOutUnprepareHeader((HMIDIOUT)hmp->hmidi, mhdr, sizeof(MIDIHDR));
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hmp->evbuf = mhdr->lpNext;
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2008-10-16 17:27:02 +00:00
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d_free(mhdr);
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2006-03-20 17:12:09 +00:00
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}
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2006-05-05 14:18:42 +00:00
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2006-03-20 17:12:09 +00:00
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if (hmp->hmidi) {
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midiStreamClose(hmp->hmidi);
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hmp->hmidi = NULL;
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}
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}
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/*
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* read a HMI type variabele length number
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*/
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static int get_var_num_hmi(unsigned char *data, int datalen, unsigned long *value) {
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unsigned char *p;
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unsigned long v = 0;
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int shift = 0;
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p = data;
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while ((datalen > 0) && !(*p & 0x80)) {
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v += *(p++) << shift;
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shift += 7;
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datalen --;
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2010-07-18 20:28:15 +00:00
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}
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2006-03-20 17:12:09 +00:00
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if (!datalen)
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return 0;
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2010-07-18 20:28:15 +00:00
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v += (*(p++) & 0x7f) << shift;
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2006-03-20 17:12:09 +00:00
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if (value) *value = v;
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2010-07-18 20:28:15 +00:00
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return p - data;
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2006-03-20 17:12:09 +00:00
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}
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/*
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* read a MIDI type variabele length number
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*/
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static int get_var_num(unsigned char *data, int datalen,
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2010-07-18 20:28:15 +00:00
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unsigned long *value) {
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2006-03-20 17:12:09 +00:00
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unsigned char *orgdata = data;
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unsigned long v = 0;
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while ((datalen > 0) && (*data & 0x80))
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v = (v << 7) + (*(data++) & 0x7f);
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if (!datalen)
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return 0;
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2010-07-18 20:28:15 +00:00
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v = (v << 7) + *(data++);
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if (value) *value = v;
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return data - orgdata;
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2006-03-20 17:12:09 +00:00
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}
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static int get_event(hmp_file *hmp, event *ev) {
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2010-07-18 20:28:15 +00:00
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static int cmdlen[7]={3,3,3,3,2,2,3};
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2006-03-20 17:12:09 +00:00
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unsigned long got;
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unsigned long mindelta, delta;
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int i, ev_num;
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hmp_track *trk, *fndtrk;
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mindelta = INT_MAX;
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fndtrk = NULL;
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for (trk = hmp->trks, i = hmp->num_trks; (i--) > 0; trk++) {
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if (!trk->left)
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continue;
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if (!(got = get_var_num_hmi(trk->cur, trk->left, &delta)))
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return HMP_INVALID_FILE;
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if (trk->left > got + 2 && *(trk->cur + got) == 0xff
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&& *(trk->cur + got + 1) == 0x2f) {/* end of track */
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trk->left = 0;
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continue;
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}
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delta += trk->cur_time - hmp->cur_time;
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if (delta < mindelta) {
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mindelta = delta;
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fndtrk = trk;
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}
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}
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if (!(trk = fndtrk))
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return HMP_EOF;
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got = get_var_num_hmi(trk->cur, trk->left, &delta);
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trk->cur_time += delta;
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ev->delta = trk->cur_time - hmp->cur_time;
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hmp->cur_time = trk->cur_time;
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if ((trk->left -= got) < 3)
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2010-07-18 20:28:15 +00:00
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return HMP_INVALID_FILE;
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2006-03-20 17:12:09 +00:00
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trk->cur += got;
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/*memset(ev, 0, sizeof(*ev));*/ev->datalen = 0;
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ev->msg[0] = ev_num = *(trk->cur++);
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trk->left--;
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if (ev_num < 0x80)
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2010-07-18 20:28:15 +00:00
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return HMP_INVALID_FILE; /* invalid command */
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2006-03-20 17:12:09 +00:00
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if (ev_num < 0xf0) {
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ev->msg[1] = *(trk->cur++);
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trk->left--;
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if (cmdlen[((ev_num) >> 4) - 8] == 3) {
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ev->msg[2] = *(trk->cur++);
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trk->left--;
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}
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} else if (ev_num == 0xff) {
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ev->msg[1] = *(trk->cur++);
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trk->left--;
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2006-05-05 14:18:42 +00:00
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if (!(got = get_var_num(ev->data = trk->cur,
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2006-03-20 17:12:09 +00:00
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trk->left, (unsigned long *)&ev->datalen)))
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return HMP_INVALID_FILE;
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2010-07-18 20:28:15 +00:00
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trk->cur += ev->datalen;
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2006-03-20 17:12:09 +00:00
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if (trk->left <= ev->datalen)
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return HMP_INVALID_FILE;
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trk->left -= ev->datalen;
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} else /* sysex -> error */
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return HMP_INVALID_FILE;
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return 0;
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}
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static int fill_buffer(hmp_file *hmp) {
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MIDIHDR *mhdr = hmp->evbuf;
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unsigned int *p = (unsigned int *)(mhdr->lpData + mhdr->dwBytesRecorded);
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unsigned int *pend = (unsigned int *)(mhdr->lpData + mhdr->dwBufferLength);
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unsigned int i;
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event ev;
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while (p + 4 <= pend) {
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if (hmp->pending_size) {
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i = (p - pend) * 4;
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if (i > hmp->pending_size)
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i = hmp->pending_size;
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*(p++) = hmp->pending_event | i;
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*(p++) = 0;
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memcpy((unsigned char *)p, hmp->pending, i);
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hmp->pending_size -= i;
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p += (i + 3) / 4;
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} else {
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if ((i = get_event(hmp, &ev))) {
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mhdr->dwBytesRecorded = ((unsigned char *)p) - ((unsigned char *)mhdr->lpData);
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return i;
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}
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if (ev.datalen) {
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hmp->pending_size = ev.datalen;
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hmp->pending = ev.data;
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hmp->pending_event = ev.msg[0] << 24;
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} else {
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*(p++) = ev.delta;
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*(p++) = 0;
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*(p++) = (((DWORD)MEVT_SHORTMSG) << 24) |
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((DWORD)ev.msg[0]) |
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(((DWORD)ev.msg[1]) << 8) |
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(((DWORD)ev.msg[2]) << 16);
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}
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}
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}
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mhdr->dwBytesRecorded = ((unsigned char *)p) - ((unsigned char *)mhdr->lpData);
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return 0;
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}
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static int setup_buffers(hmp_file *hmp) {
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int i;
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MIDIHDR *buf, *lastbuf;
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lastbuf = NULL;
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for (i = 0; i < HMP_BUFFERS; i++) {
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2008-10-16 17:27:02 +00:00
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if (!(buf = d_malloc(HMP_BUFSIZE + sizeof(MIDIHDR))))
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2006-03-20 17:12:09 +00:00
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return HMP_OUT_OF_MEM;
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memset(buf, 0, sizeof(MIDIHDR));
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buf->lpData = (unsigned char *)buf + sizeof(MIDIHDR);
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buf->dwBufferLength = HMP_BUFSIZE;
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buf->dwUser = (DWORD)hmp;
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buf->lpNext = lastbuf;
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lastbuf = buf;
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}
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hmp->evbuf = lastbuf;
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return 0;
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}
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2006-05-05 14:18:42 +00:00
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static void reset_tracks(struct hmp_file *hmp)
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{
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2006-03-20 17:12:09 +00:00
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int i;
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for (i = 0; i < hmp->num_trks; i++) {
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2006-05-05 14:18:42 +00:00
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hmp->trks [i].cur = hmp->trks [i].data;
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hmp->trks [i].left = hmp->trks [i].len;
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hmp->trks [i].cur_time = 0;
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2006-03-20 17:12:09 +00:00
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}
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2006-05-05 14:18:42 +00:00
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|
hmp->cur_time=0;
|
2006-03-20 17:12:09 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void _stdcall midi_callback(HMIDISTRM hms, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2) {
|
|
|
|
MIDIHDR *mhdr;
|
|
|
|
hmp_file *hmp;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
if (uMsg != MOM_DONE)
|
|
|
|
return;
|
2006-05-05 14:18:42 +00:00
|
|
|
|
2006-03-20 17:12:09 +00:00
|
|
|
mhdr = ((MIDIHDR *)dw1);
|
|
|
|
mhdr->dwBytesRecorded = 0;
|
|
|
|
hmp = (hmp_file *)(mhdr->dwUser);
|
|
|
|
mhdr->lpNext = hmp->evbuf;
|
|
|
|
hmp->evbuf = mhdr;
|
|
|
|
hmp->bufs_in_mm--;
|
|
|
|
|
|
|
|
if (!hmp->stop) {
|
2006-05-05 14:18:42 +00:00
|
|
|
while (fill_buffer(hmp) == HMP_EOF) {
|
2008-05-01 21:40:34 +00:00
|
|
|
if (hmp->bLoop)
|
2006-05-05 14:18:42 +00:00
|
|
|
hmp->stop = 0;
|
|
|
|
else
|
|
|
|
hmp->stop = 1;
|
|
|
|
|
2006-03-20 17:12:09 +00:00
|
|
|
reset_tracks(hmp);
|
2006-05-05 14:18:42 +00:00
|
|
|
}
|
|
|
|
if ((rc = midiStreamOut(hmp->hmidi, hmp->evbuf,
|
2006-03-20 17:12:09 +00:00
|
|
|
sizeof(MIDIHDR))) != MMSYSERR_NOERROR) {
|
|
|
|
/* ??? */
|
|
|
|
} else {
|
|
|
|
hmp->evbuf = hmp->evbuf->lpNext;
|
|
|
|
hmp->bufs_in_mm++;
|
|
|
|
}
|
|
|
|
}
|
2010-07-18 20:28:15 +00:00
|
|
|
|
|
|
|
|
2006-03-20 17:12:09 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void setup_tempo(hmp_file *hmp, unsigned long tempo) {
|
|
|
|
MIDIHDR *mhdr = hmp->evbuf;
|
|
|
|
unsigned int *p = (unsigned int *)(mhdr->lpData + mhdr->dwBytesRecorded);
|
|
|
|
*(p++) = 0;
|
|
|
|
*(p++) = 0;
|
|
|
|
*(p++) = (((DWORD)MEVT_TEMPO)<<24) | tempo;
|
|
|
|
mhdr->dwBytesRecorded += 12;
|
|
|
|
}
|
|
|
|
|
2006-05-05 14:18:42 +00:00
|
|
|
int hmp_play(hmp_file *hmp, int bLoop)
|
|
|
|
{
|
2006-03-20 17:12:09 +00:00
|
|
|
int rc;
|
|
|
|
MIDIPROPTIMEDIV mptd;
|
2006-05-05 14:18:42 +00:00
|
|
|
#if 1
|
2010-07-18 20:28:15 +00:00
|
|
|
unsigned int numdevs;
|
|
|
|
int i=0; // ZICO - LOOP HERE
|
|
|
|
|
|
|
|
numdevs=midiOutGetNumDevs();
|
|
|
|
hmp->devid=-1;
|
|
|
|
do
|
|
|
|
{
|
|
|
|
MIDIOUTCAPS devcaps;
|
|
|
|
midiOutGetDevCaps(i,&devcaps,sizeof(MIDIOUTCAPS));
|
|
|
|
if ((devcaps.wTechnology==MOD_FMSYNTH) || (devcaps.wTechnology==MOD_SYNTH))
|
|
|
|
hmp->devid=i;
|
|
|
|
i++;
|
|
|
|
} while ((i<(int)numdevs) && (hmp->devid==-1));
|
2006-05-05 14:18:42 +00:00
|
|
|
if (hmp->devid == -1)
|
2006-03-20 17:12:09 +00:00
|
|
|
#endif
|
2010-07-18 20:28:15 +00:00
|
|
|
hmp->bLoop = bLoop;
|
2006-05-05 14:18:42 +00:00
|
|
|
hmp->devid = MIDI_MAPPER;
|
2006-03-20 17:12:09 +00:00
|
|
|
|
|
|
|
if ((rc = setup_buffers(hmp)))
|
|
|
|
return rc;
|
2010-07-18 20:28:15 +00:00
|
|
|
if ((midiStreamOpen(&hmp->hmidi, &hmp->devid,1, (DWORD) (size_t) midi_callback, 0, CALLBACK_FUNCTION)) != MMSYSERR_NOERROR) {
|
2006-03-20 17:12:09 +00:00
|
|
|
hmp->hmidi = NULL;
|
|
|
|
return HMP_MM_ERR;
|
|
|
|
}
|
|
|
|
mptd.cbStruct = sizeof(mptd);
|
|
|
|
mptd.dwTimeDiv = hmp->tempo;
|
2010-07-18 20:28:15 +00:00
|
|
|
if ((midiStreamProperty(hmp->hmidi,(LPBYTE)&mptd,MIDIPROP_SET|MIDIPROP_TIMEDIV)) != MMSYSERR_NOERROR) {
|
2006-03-20 17:12:09 +00:00
|
|
|
return HMP_MM_ERR;
|
|
|
|
}
|
|
|
|
|
|
|
|
reset_tracks(hmp);
|
|
|
|
setup_tempo(hmp, 0x0f4240);
|
|
|
|
|
|
|
|
hmp->stop = 0;
|
|
|
|
while (hmp->evbuf) {
|
|
|
|
if ((rc = fill_buffer(hmp))) {
|
|
|
|
if (rc == HMP_EOF) {
|
|
|
|
reset_tracks(hmp);
|
|
|
|
continue;
|
|
|
|
} else
|
|
|
|
return rc;
|
|
|
|
}
|
2006-05-05 14:18:42 +00:00
|
|
|
if ((rc = midiOutPrepareHeader((HMIDIOUT)hmp->hmidi, hmp->evbuf,
|
2006-03-20 17:12:09 +00:00
|
|
|
sizeof(MIDIHDR))) != MMSYSERR_NOERROR) {
|
|
|
|
return HMP_MM_ERR;
|
|
|
|
}
|
2006-05-05 14:18:42 +00:00
|
|
|
if ((rc = midiStreamOut(hmp->hmidi, hmp->evbuf,
|
2006-03-20 17:12:09 +00:00
|
|
|
sizeof(MIDIHDR))) != MMSYSERR_NOERROR) {
|
|
|
|
return HMP_MM_ERR;
|
|
|
|
}
|
|
|
|
hmp->evbuf = hmp->evbuf->lpNext;
|
|
|
|
hmp->bufs_in_mm++;
|
|
|
|
}
|
|
|
|
midiStreamRestart(hmp->hmidi);
|
|
|
|
return 0;
|
|
|
|
}
|
2010-07-18 20:28:15 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
// CONVERSION FROM HMP TO MIDI
|
|
|
|
|
2010-10-29 15:40:42 +00:00
|
|
|
static unsigned int hmptrk2mid(ubyte* data, int size, unsigned char **midbuf, unsigned int *midlen)
|
2010-07-18 20:28:15 +00:00
|
|
|
{
|
|
|
|
ubyte *dptr = data;
|
|
|
|
ubyte lc1 = 0,last_com = 0;
|
2010-10-29 15:40:42 +00:00
|
|
|
uint d;
|
2010-07-18 20:28:15 +00:00
|
|
|
int n1, n2;
|
2010-10-29 15:40:42 +00:00
|
|
|
unsigned int offset = *midlen;
|
2010-07-18 20:28:15 +00:00
|
|
|
|
|
|
|
while (data < dptr + size)
|
|
|
|
{
|
|
|
|
if (data[0] & 0x80) {
|
|
|
|
ubyte b = (data[0] & 0x7F);
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 1);
|
|
|
|
memcpy(&(*midbuf)[*midlen], &b, 1);
|
|
|
|
*midlen += 1;
|
2010-07-18 20:28:15 +00:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
d = (data[0] & 0x7F);
|
|
|
|
n1 = 0;
|
|
|
|
while ((data[n1] & 0x80) == 0) {
|
|
|
|
n1++;
|
|
|
|
d += (data[n1] & 0x7F) << (n1 * 7);
|
|
|
|
}
|
|
|
|
n1 = 1;
|
|
|
|
while ((data[n1] & 0x80) == 0) {
|
|
|
|
n1++;
|
|
|
|
if (n1 == 4)
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
for(n2 = 0; n2 <= n1; n2++) {
|
|
|
|
ubyte b = (data[n1 - n2] & 0x7F);
|
|
|
|
|
|
|
|
if (n2 != n1)
|
|
|
|
b |= 0x80;
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 1);
|
|
|
|
memcpy(&(*midbuf)[*midlen], &b, 1);
|
|
|
|
*midlen += 1;
|
2010-07-18 20:28:15 +00:00
|
|
|
}
|
|
|
|
data += n1;
|
|
|
|
}
|
|
|
|
data++;
|
|
|
|
if (*data == 0xFF) { //meta?
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 3 + data[2]);
|
|
|
|
memcpy(&(*midbuf)[*midlen], data, 3 + data[2]);
|
|
|
|
*midlen += 3 + data[2];
|
2010-07-18 20:28:15 +00:00
|
|
|
if (data[1] == 0x2F)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
lc1=data[0] ;
|
|
|
|
if ((lc1&0x80) == 0)
|
|
|
|
return 0;
|
|
|
|
switch (lc1 & 0xF0) {
|
|
|
|
case 0x80:
|
|
|
|
case 0x90:
|
|
|
|
case 0xA0:
|
|
|
|
case 0xB0:
|
|
|
|
case 0xE0:
|
|
|
|
if (lc1 != last_com)
|
2010-10-29 15:40:42 +00:00
|
|
|
{
|
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 1);
|
|
|
|
memcpy(&(*midbuf)[*midlen], &lc1, 1);
|
|
|
|
*midlen += 1;
|
|
|
|
}
|
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 2);
|
|
|
|
memcpy(&(*midbuf)[*midlen], data + 1, 2);
|
|
|
|
*midlen += 2;
|
2010-07-18 20:28:15 +00:00
|
|
|
data += 3;
|
|
|
|
break;
|
|
|
|
case 0xC0:
|
|
|
|
case 0xD0:
|
|
|
|
if (lc1 != last_com)
|
2010-10-29 15:40:42 +00:00
|
|
|
{
|
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 1);
|
|
|
|
memcpy(&(*midbuf)[*midlen], &lc1, 1);
|
|
|
|
*midlen += 1;
|
|
|
|
}
|
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 1);
|
|
|
|
memcpy(&(*midbuf)[*midlen], data + 1, 1);
|
|
|
|
*midlen += 1;
|
2010-07-18 20:28:15 +00:00
|
|
|
data += 2;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
last_com = lc1;
|
|
|
|
}
|
|
|
|
}
|
2010-10-29 15:40:42 +00:00
|
|
|
return (*midlen - offset);
|
2010-07-18 20:28:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ubyte tempo [19] = {'M','T','r','k',0,0,0,11,0,0xFF,0x51,0x03,0x18,0x80,0x00,0,0xFF,0x2F,0};
|
|
|
|
|
2010-10-29 15:40:42 +00:00
|
|
|
void hmp2mid(char *hmp_name, unsigned char **midbuf, unsigned int *midlen)
|
2010-07-18 20:28:15 +00:00
|
|
|
{
|
2010-10-29 15:40:42 +00:00
|
|
|
int mi, i;
|
2010-07-18 20:28:15 +00:00
|
|
|
short ms;
|
|
|
|
hmp_file *hmp=NULL;
|
|
|
|
|
|
|
|
hmp = hmp_open(hmp_name);
|
|
|
|
if (hmp == NULL)
|
|
|
|
return;
|
2010-10-29 15:40:42 +00:00
|
|
|
|
|
|
|
*midlen = 0;
|
|
|
|
|
2010-07-18 20:28:15 +00:00
|
|
|
// write MIDI-header
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 4);
|
|
|
|
memcpy(&(*midbuf)[*midlen], "MThd", 4);
|
|
|
|
*midlen += 4;
|
2010-07-18 20:28:15 +00:00
|
|
|
mi = MIDIINT(6);
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + sizeof(mi));
|
|
|
|
memcpy(&(*midbuf)[*midlen], &mi, sizeof(mi));
|
|
|
|
*midlen += sizeof(mi);
|
2010-07-18 20:28:15 +00:00
|
|
|
ms = MIDISHORT(1);
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + sizeof(ms));
|
|
|
|
memcpy(&(*midbuf)[*midlen], &ms, sizeof(ms));
|
|
|
|
*midlen += sizeof(ms);
|
2010-07-18 20:28:15 +00:00
|
|
|
ms = MIDISHORT(hmp->num_trks);
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + sizeof(ms));
|
|
|
|
memcpy(&(*midbuf)[*midlen], &ms, sizeof(ms));
|
|
|
|
*midlen += sizeof(ms);
|
2010-07-18 20:28:15 +00:00
|
|
|
ms = MIDISHORT((short) 0xC0);
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + sizeof(ms));
|
|
|
|
memcpy(&(*midbuf)[*midlen], &ms, sizeof(ms));
|
|
|
|
*midlen += sizeof(ms);
|
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + sizeof(tempo));
|
|
|
|
memcpy(&(*midbuf)[*midlen], &tempo, sizeof(tempo));
|
|
|
|
*midlen += sizeof(tempo);
|
2010-07-18 20:28:15 +00:00
|
|
|
|
|
|
|
// tracks
|
|
|
|
for (i = 1; i < hmp->num_trks; i++)
|
|
|
|
{
|
2010-10-29 15:40:42 +00:00
|
|
|
int midtrklenpos = 0;
|
|
|
|
|
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + 4);
|
|
|
|
memcpy(&(*midbuf)[*midlen], "MTrk", 4);
|
|
|
|
*midlen += 4;
|
|
|
|
midtrklenpos = *midlen;
|
2010-07-18 20:28:15 +00:00
|
|
|
mi = 0;
|
2010-10-29 15:40:42 +00:00
|
|
|
*midbuf = d_realloc(*midbuf, *midlen + sizeof(mi));
|
|
|
|
*midlen += sizeof(mi);
|
|
|
|
mi = hmptrk2mid(hmp->trks[i].data, hmp->trks[i].len, midbuf, midlen);
|
2010-07-18 20:28:15 +00:00
|
|
|
mi = MIDIINT(mi);
|
2010-10-29 15:40:42 +00:00
|
|
|
memcpy(&(*midbuf)[midtrklenpos], &mi, 4);
|
2010-07-18 20:28:15 +00:00
|
|
|
}
|
|
|
|
|
2010-07-19 17:05:41 +00:00
|
|
|
hmp_close(hmp);
|
|
|
|
}
|