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Some shifting optimizations. Working code. 50% realtime.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6323 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Stepan Moskovchenko 2005-04-19 15:57:07 +00:00
parent c3d0a229cc
commit 1f5fb99819
6 changed files with 238 additions and 201 deletions
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52
apps/plugins/midi/guspat.c
View file

@ -66,18 +66,64 @@ struct GWaveform * loadWaveform(int file)
wav->res=readData(file, 36);
wav->data=readData(file, wav->wavSize);
wav->numSamples = wav->wavSize / 2;
int a=0;
return wav;
if(wav->mode & 1 == 0) //Whoops, 8 bit
{
wav->numSamples = wav->wavSize;
//Allocate a block for the rest of it
//It should end up right after the previous one.
wav->wavSize = wav->wavSize * 2;
void * foo = allocate(wav->wavSize);
for(a=0; a<1000; a++)
printf("\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
for(a=wav->wavSize-1; a>0; a-=2)
{
}
// int b1=wf->data[s]+((wf->mode & 2) << 6);
// return b1<<8;
}
/*
//#if !defined(SIMULATOR)
for(a=0; a<wav->wavSize; a+=2)
{
unsigned char tmp;
tmp = wav->data[2*a];
wav->data[2*a] = wav->data[2*a+1];
wav->data[2*a+1] = tmp;
}
//#endif
if(wav->mode & 2)
{
for(a=0; a<wav->wavSize/2; a++)
{
((short *) wav->data)[a] = ((short *) wav->data)[a] - 32767;
}
}
*/
//If we have a 16 bit waveform
if(wav->mode & 1 && (wav->mode & 2))
/* if(wav->mode & 1 && (wav->mode & 2))
{
for(a=0; a<wav->wavSize; a+=2) //Convert it to
{
//wav->data[a]=wav->data[a]; //+((wav->mode & 2) << 6);
wav->data[a]=wav->data[a]+(1 << 7);
wav->data[a|1]=wav->data[(a)|1]+(1 << 7);
}
}
*/
return wav;
}