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BizHawk
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PicoDrive: Sound

This commit is contained in:
nattthebear 2017-07-02 15:06:44 -04:00
parent 47535f8158
commit 8b4176df70
2 changed files with 33 additions and 16 deletions
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48
waterbox/picodrive/bizhawk.c
View File

@ -1,6 +1,7 @@
#include <stdio.h>
#include <stdint.h>
#include <stdarg.h>
#include <string.h>
#include "../emulibc/emulibc.h"
#include "../emulibc/waterboxcore.h"
@ -60,10 +61,23 @@ int pm_close(pm_file *fp)
return ret;
}
typedef struct
{
FrameInfo b;
} MyFrameInfo;
static int video_start_line;
static int video_line_count;
static int video_width;
static uint16_t* video_buffer;
static uint16_t *video_buffer;
static int16_t *sound_buffer;
static MyFrameInfo *current_frame;
static void SoundCallback(int len)
{
current_frame->b.Samples = len / (2 * sizeof(int16_t));
memcpy(current_frame->b.SoundBuffer, sound_buffer, len);
}
void emu_video_mode_change(int start_line, int line_count, int is_32cols)
{
@ -83,34 +97,38 @@ void mp3_update(int *buffer, int length, int stereo) {}
ECL_EXPORT int Init(void)
{
video_buffer = alloc_invisible(512 * 512 * sizeof(uint16_t));
PicoOpt = POPT_EN_FM | POPT_EN_PSG | POPT_EN_Z80 | POPT_EN_STEREO | POPT_ACC_SPRITES | POPT_DIS_32C_BORDER | POPT_EN_MCD_PCM | POPT_EN_MCD_CDDA | POPT_EN_MCD_GFX | POPT_EN_32X | POPT_EN_PWM;
PicoInit();
if (PicoLoadMedia("romfile.md", NULL, NULL, NULL, PM_MD_CART) != PM_MD_CART)
return 0;
PicoLoopPrepare();
video_buffer = alloc_invisible(512 * 512 * sizeof(uint16_t));
sound_buffer = alloc_invisible(2048 * sizeof(int16_t));
PsndRate = 44100;
PsndOut = sound_buffer;
PicoWriteSound = SoundCallback;
PicoSetInputDevice(0, PICO_INPUT_PAD_6BTN);
PicoSetInputDevice(1, PICO_INPUT_PAD_6BTN);
PicoDrawSetOutBuf(video_buffer, 512 * sizeof(uint16_t));
PsndRerate(0);
if (PicoLoadMedia("romfile.md", NULL, NULL, NULL, PM_MD_CART) != PM_MD_CART)
return 0;
PicoDrawSetOutFormat(PDF_RGB555, 0); // TODO: what is "use_32x_line_mode"?
PicoPower();
return 1;
}
typedef struct
{
FrameInfo b;
} MyFrameInfo;
static void Blit(const uint16_t *src, FrameInfo *f)
static void Blit(void)
{
const uint16_t *src = video_buffer;
FrameInfo *f = &current_frame->b;
f->Width = video_width;
f->Height = video_line_count;
uint8_t *dst = (uint8_t *)f->VideoBuffer;
src += 512 * video_start_line;
if (video_width == 256)
src += 32;
for (int j = 0; j < video_line_count; j++)
{
@ -128,10 +146,10 @@ static void Blit(const uint16_t *src, FrameInfo *f)
ECL_EXPORT void FrameAdvance(MyFrameInfo *f)
{
PicoLoopPrepare();
current_frame = f;
PicoFrame();
Blit(video_buffer, &f->b);
f->b.Samples = 735; // TODO
Blit();
current_frame = NULL;
}
static uint8_t dumbo[16];

1
waterbox/picodrive/pico/pico.h
View File

@ -49,7 +49,6 @@ extern void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s;
#define POPT_EN_MCD_CDDA (1<<11)
#define POPT_EN_MCD_GFX (1<<12) // 00 x000
// unused (1<<13)
#define POPT_EN_SOFTSCALE (1<<14)
#define POPT_EN_MCD_RAMCART (1<<15)
#define POPT_DIS_VDP_FIFO (1<<16) // 0x 0000
#define POPT_EN_DRC (1<<17)