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MIDI: At long last, though quick and dirty, pitch bend depth! Or, I think it works. Tested on two

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files. Let me know if anyone discovers any problems with this. This commit also includes Nils's synth 
loop optimization patch. I hope committing it does not cause problems.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15112 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Stepan Moskovchenko 2007-10-15 05:11:37 +00:00
parent 99f9550881
commit 1515ff8522
5 changed files with 240 additions and 162 deletions
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14
apps/plugins/midi/midiplay.c
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@ -93,6 +93,7 @@ int numberOfSamples IBSS_ATTR;
long bpm IBSS_ATTR;
int32_t gmbuf[BUF_SIZE*NBUF];
static unsigned int samples_in_buf;
int quit=0;
struct plugin_api * rb;
@ -160,7 +161,8 @@ static inline void synthbuf(void)
outptr=gmbuf;
#endif
for(i=0; i<BUF_SIZE/numberOfSamples; i++)
/* synth samples for as many whole ticks as we can fit in the buffer */
for(i=0; i < BUF_SIZE/numberOfSamples; i++)
{
synthSamples((int32_t*)outptr, numberOfSamples);
outptr += numberOfSamples;
@ -168,11 +170,9 @@ static inline void synthbuf(void)
quit=1;
}
if(BUF_SIZE%numberOfSamples)
{
synthSamples((int32_t*)outptr, BUF_SIZE%numberOfSamples);
outptr += BUF_SIZE%numberOfSamples;
}
/* how many samples did we write to the buffer? */
samples_in_buf = BUF_SIZE-(BUF_SIZE%numberOfSamples);
}
void get_more(unsigned char** start, size_t* size)
@ -187,7 +187,7 @@ void get_more(unsigned char** start, size_t* size)
synthbuf(); // For some reason midiplayer crashes when an update is forced
#endif
*size = sizeof(gmbuf)/NBUF;
*size = samples_in_buf*sizeof(int32_t);
#ifndef SYNC
*start = (unsigned char*)((swap ? gmbuf : gmbuf + BUF_SIZE));
swap=!swap;