devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Some shifting optimizations. Working code. 50% realtime.

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

132
apps/plugins/midi/midiutil.c
View file

@ -63,33 +63,26 @@
extern struct plugin_api * rb;
int chVol[16] IDATA_ATTR; //Channel volume
int chPanLeft[16] IDATA_ATTR; //Channel panning
int chPanRight[16] IDATA_ATTR;
int chPat[16]; //Channel patch
int chPW[16]; //Channel pitch wheel, MSB only
/*
unsigned char chVol[16]; //Channel volume
unsigned char chPanLeft[16]; //Channel panning
unsigned char chPanRight[16];
unsigned char chPat[16]; //Channel patch
unsigned char chPW[16]; //Channel pitch wheel, MSB only
*/
struct GPatch * gusload(char *);
struct GPatch * patchSet[128];
struct GPatch * drumSet[128];
struct SynthObject voices[MAX_VOICES];
struct SynthObject
{
int tmp;
struct GWaveform * wf;
unsigned int delta;
unsigned int decay;
unsigned int cp;
unsigned char state, pstate, loopState, loopDir;
unsigned char note, vol, ch, isUsed;
int curRate, curOffset, targetOffset;
int curPoint;
};
//char myarray[80] IDATA_ATTR;
struct Event
{
@ -120,6 +113,34 @@ struct MIDIfile
unsigned char patches[128];
int numPatches;
};
/*
struct SynthObject
{
// int tmp;
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
{
// int tmp;
struct GWaveform * wf;
int delta;
int decay;
int cp;
int state, loopState, loopDir;
int note, vol, ch, isUsed;
int curRate, curOffset, targetOffset;
int curPoint;
};
struct SynthObject voices[MAX_VOICES] IDATA_ATTR;
@ -133,13 +154,16 @@ int readVarData(int file);
int midimain(void * filename);
//Rick's code
void *alloc(int size)
{
static char *offset = NULL;
static int totalSize = 0;
char *ret;
int remainder = size % 4;
size = size + 4-remainder;
if (offset == NULL)
{
offset = rb->plugin_get_audio_buffer(&totalSize);
@ -157,40 +181,34 @@ void *alloc(int size)
totalSize -= size + 4;
return ret;
}
//Rick's code
/*
void *ralloc(char *offset, int len)
void *alloc(int size)
{
int size;
static char *offset = NULL;
static int totalSize = 0;
char *ret;
if (offset == NULL)
{
return alloc(len);
offset = rb->plugin_get_audio_buffer(&totalSize);
}
size = *((unsigned int *)offset - 4);
if (size >= 0x02000000)
if (size + 4 > totalSize)
{
return NULL;
}
ret = alloc(len);
if (len < size)
{
rb->memcpy(ret, offset, len);
}
else
{
rb->memcpy(ret, offset, size);
rb->memset(ret, 0, len - size);
}
ret = offset + 4;
*((unsigned int *)offset) = size;
offset += size + 4;
totalSize -= size + 4;
return ret;
}
*/
}*/
void * allocate(int size)
{
return alloc(size);
@ -222,44 +240,6 @@ int eof(int fd)
void printf(char *fmt, ...) {fmt=fmt; }
/*
void *audio_bufferbase;
void *audio_bufferpointer;
unsigned int audio_buffer_free;
void *my_malloc(int size)
{
void *alloc;
if (!audio_bufferbase)
{
audio_bufferbase = audio_bufferpointer
= rb->plugin_get_audio_buffer(&audio_buffer_free);
#if MEM <= 8 && !defined(SIMULATOR)
if ((unsigned)(ovl_start_addr - (unsigned char *)audio_bufferbase)
< audio_buffer_free)
audio_buffer_free = ovl_start_addr - (unsigned char *)audio_bufferbase;
#endif
}
if (size + 4 > audio_buffer_free)
return 0;
alloc = audio_bufferpointer;
audio_bufferpointer += size + 4;
audio_buffer_free -= size + 4;
return alloc;
}
void setmallocpos(void *pointer)
{
audio_bufferpointer = pointer;
audio_buffer_free = audio_bufferpointer - audio_bufferbase;
}
*/
void exit(int code)
{
code = code; //Stub function, kill warning for now