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MIDI: Optimize the new pitch bending code for a small speedup.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15160 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Stepan Moskovchenko 2007-10-17 03:48:24 +00:00
parent 1cc852c346
commit d33645ba13
4 changed files with 28 additions and 99 deletions
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20
apps/plugins/midi/midiutil.h
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@ -34,8 +34,7 @@
mainly because they have to use 44100Hz sample rate */
#define MAX_VOICES 16
#else
#define MAX_VOICES 24 /* Note: 24 midi channels is the minimum general midi
spec implementation */
#define MAX_VOICES 24 /* Note: 24 midi channels is the minimum general midi spec implementation */
#endif /* CPU_PP */
#else /* Simulator requires 44100Hz, and we can afford to use more voices */
@ -98,19 +97,6 @@ struct MIDIfile
int numPatches;
};
/*
struct SynthObject
{
struct GWaveform * wf;
unsigned int delta;
unsigned int decay;
unsigned int cp;
unsigned char state, loopState, loopDir;
unsigned char note, vol, ch, isUsed;
int curRate, curOffset, targetOffset;
unsigned int curPoint;
};
*/
struct SynthObject
{
@ -161,6 +147,10 @@ extern int chPan[16]; /* Channel panning */
extern int chPat[16]; /* Channel patch */
extern int chPW[16]; /* Channel pitch wheel, MSB only */
extern int chPBDepth[16]; /* Channel pitch bend depth (Controller 6 */
extern int chPBNoteOffset[16] IBSS_ATTR; /* Pre-computed whole semitone offset */
extern int chPBFractBend[16] IBSS_ATTR; /* Fractional bend applied to delta */
extern struct GPatch * gusload(char *);
extern struct GPatch * patchSet[128];