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Code Issues Projects Releases Wiki Activity

Renamed Apu to Audio

This commit is contained in:
neauoire 2021-12-28 13:47:35 -08:00
parent 7b33cf3d95
commit c3506869b5
6 changed files with 31 additions and 29 deletions
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6
build.sh
View File

@ -16,8 +16,8 @@ then
clang-format -i src/uxn.c
clang-format -i src/devices/screen.h
clang-format -i src/devices/screen.c
clang-format -i src/devices/apu.h
clang-format -i src/devices/apu.c
clang-format -i src/devices/audio.h
clang-format -i src/devices/audio.c
clang-format -i src/devices/file.h
clang-format -i src/devices/file.c
clang-format -i src/devices/mouse.h
@ -62,7 +62,7 @@ fi
echo "Building.."
${CC} ${CFLAGS} src/uxnasm.c -o bin/uxnasm
${CC} ${CFLAGS} ${CORE} src/devices/file.c src/devices/mouse.c src/devices/controller.c src/devices/screen.c src/devices/apu.c src/uxnemu.c ${UXNEMU_LDFLAGS} -o bin/uxnemu
${CC} ${CFLAGS} ${CORE} src/devices/file.c src/devices/mouse.c src/devices/controller.c src/devices/screen.c src/devices/audio.c src/uxnemu.c ${UXNEMU_LDFLAGS} -o bin/uxnemu
${CC} ${CFLAGS} ${CORE} src/devices/file.c src/uxncli.c -o bin/uxncli
if [ -d "$HOME/bin" ]

6
mkfile
View File

@ -6,7 +6,7 @@ ROM=${USM:%.tal=%.rom}
CFLAGS=$CFLAGS -D__plan9__ -I/sys/include/npe -I/sys/include/npe/SDL2
HFILES=\
/sys/include/npe/stdio.h\
src/devices/apu.h\
src/devices/audio.h\
src/devices/file.h\
src/devices/screen.h\
src/uxn.h\
@ -35,13 +35,13 @@ bin/uxncli: file.$O uxncli.$O uxn.$O
bin/uxnasm: uxnasm.$O
$LD $LDFLAGS -o $target $prereq
bin/uxnemu: uxnemu.$O apu.$O file.$O screen.$O uxn.$O
bin/uxnemu: uxnemu.$O audio.$O file.$O screen.$O uxn.$O
$LD $LDFLAGS -o $target $prereq
(uxnasm|uxncli|uxnemu|uxn)\.$O:R: src/\1.c
$CC $CFLAGS -Isrc -o $target src/$stem1.c
(apu|file|screen)\.$O:R: src/devices/\1.c
(audio|file|screen)\.$O:R: src/devices/\1.c
$CC $CFLAGS -Isrc -o $target src/devices/$stem1.c
nuke:V: clean

14
src/devices/apu.c → src/devices/audio.c
View File

@ -1,5 +1,5 @@
#include "../uxn.h"
#include "apu.h"
#include "audio.h"
/*
Copyright (c) 2021 Devine Lu Linvega
@ -23,10 +23,12 @@ static Uint32 advances[12] = {
0xb504f, 0xbfc88, 0xcb2ff, 0xd7450, 0xe411f, 0xf1a1c
};
Audio audio[POLYPHONY];
/* clang-format on */
static Sint32
envelope(Apu *c, Uint32 age)
envelope(Audio *c, Uint32 age)
{
if(!c->r) return 0x0888;
if(age < c->a) return 0x0888 * age / c->a;
@ -38,7 +40,7 @@ envelope(Apu *c, Uint32 age)
}
int
apu_render(Apu *c, Sint16 *sample, Sint16 *end)
audio_render(Audio *c, Sint16 *sample, Sint16 *end)
{
Sint32 s;
if(!c->advance || !c->period) return 0;
@ -57,12 +59,12 @@ apu_render(Apu *c, Sint16 *sample, Sint16 *end)
*sample++ += s * c->volume[0] / 0x180;
*sample++ += s * c->volume[1] / 0x180;
}
if(!c->advance) apu_finished_handler(c);
if(!c->advance) audio_finished_handler(c);
return 1;
}
void
apu_start(Apu *c, Uint16 adsr, Uint8 pitch)
audio_start(Audio *c, Uint16 adsr, Uint8 pitch)
{
if(pitch < 108 && c->len)
c->advance = advances[pitch % 12] >> (8 - pitch / 12);
@ -83,7 +85,7 @@ apu_start(Apu *c, Uint16 adsr, Uint8 pitch)
}
Uint8
apu_get_vu(Apu *c)
audio_get_vu(Audio *c)
{
int i;
Sint32 sum[2] = {0, 0};

13
src/devices/apu.h → src/devices/audio.h
View File

@ -13,6 +13,7 @@ WITH REGARD TO THIS SOFTWARE.
typedef signed int Sint32;
#define SAMPLE_FREQUENCY 44100
#define POLYPHONY 4
typedef struct {
Uint8 *addr;
@ -20,9 +21,11 @@ typedef struct {
Uint16 i, len;
Sint8 volume[2];
Uint8 pitch, repeat;
} Apu;
} Audio;
int apu_render(Apu *c, Sint16 *sample, Sint16 *end);
void apu_start(Apu *c, Uint16 adsr, Uint8 pitch);
Uint8 apu_get_vu(Apu *c);
void apu_finished_handler(Apu *c);
extern Audio audio[POLYPHONY];
int audio_render(Audio *c, Sint16 *sample, Sint16 *end);
void audio_start(Audio *c, Uint16 adsr, Uint8 pitch);
Uint8 audio_get_vu(Audio *c);
void audio_finished_handler(Audio *c);

3
src/devices/screen.c
View File

@ -45,8 +45,7 @@ screen_write(Screen *p, Layer *layer, Uint16 x, Uint16 y, Uint8 color)
{
if(x < p->width && y < p->height) {
Uint32 i = x + y * p->width;
Uint8 prev = layer->pixels[i];
if(color != prev) {
if(color != layer->pixels[i]) {
layer->pixels[i] = color;
layer->changed = 1;
}

18
src/uxnemu.c
View File

@ -9,7 +9,7 @@
#pragma clang diagnostic ignored "-Wtypedef-redefinition"
#include <SDL.h>
#include "devices/screen.h"
#include "devices/apu.h"
#include "devices/audio.h"
#include "devices/file.h"
#include "devices/controller.h"
#include "devices/mouse.h"
@ -30,7 +30,6 @@ WITH REGARD TO THIS SOFTWARE.
#define WIDTH 64 * 8
#define HEIGHT 40 * 8
#define PAD 4
#define POLYPHONY 4
#define BENCH 0
static SDL_Window *gWindow;
@ -41,7 +40,6 @@ static SDL_Rect gRect;
/* devices */
static Apu apu[POLYPHONY];
static Device *devsystem, *devscreen, *devmouse, *devctrl, *devaudio0, *devconsole;
static Uint8 zoom = 1;
static Uint32 stdin_event, audio0_event;
@ -68,17 +66,17 @@ audio_callback(void *u, Uint8 *stream, int len)
Sint16 *samples = (Sint16 *)stream;
SDL_memset(stream, 0, len);
for(i = 0; i < POLYPHONY; ++i)
running += apu_render(&apu[i], samples, samples + len / 2);
running += audio_render(&audio[i], samples, samples + len / 2);
if(!running)
SDL_PauseAudioDevice(audio_id, 1);
(void)u;
}
void
apu_finished_handler(Apu *c)
audio_finished_handler(Audio *c)
{
SDL_Event event;
event.type = audio0_event + (c - apu);
event.type = audio0_event + (c - audio);
SDL_PushEvent(&event);
}
@ -212,10 +210,10 @@ console_deo(Device *d, Uint8 port)
static Uint8
audio_dei(Device *d, Uint8 port)
{
Apu *c = &apu[d - devaudio0];
Audio *c = &audio[d - devaudio0];
if(!audio_id) return d->dat[port];
switch(port) {
case 0x4: return apu_get_vu(c);
case 0x4: return audio_get_vu(c);
case 0x2: poke16(d->dat, 0x2, c->i); /* fall through */
default: return d->dat[port];
}
@ -224,7 +222,7 @@ audio_dei(Device *d, Uint8 port)
static void
audio_deo(Device *d, Uint8 port)
{
Apu *c = &apu[d - devaudio0];
Audio *c = &audio[d - devaudio0];
if(!audio_id) return;
if(port == 0xf) {
SDL_LockAudioDevice(audio_id);
@ -233,7 +231,7 @@ audio_deo(Device *d, Uint8 port)
c->volume[0] = d->dat[0xe] >> 4;
c->volume[1] = d->dat[0xe] & 0xf;
c->repeat = !(d->dat[0xf] & 0x80);
apu_start(c, peek16(d->dat, 0x8), d->dat[0xf] & 0x7f);
audio_start(c, peek16(d->dat, 0x8), d->dat[0xf] & 0x7f);
SDL_UnlockAudioDevice(audio_id);
SDL_PauseAudioDevice(audio_id, 0);
}