claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions 3 Packages Projects Releases Wiki Activity

Lowercase all CAPS to prevent case sensitive errors in non-Windows platforms

Browse Source
This commit is contained in:
Natalia Portillo
2017-08-27 04:33:47 +01:00
parent 19a3413570
commit c1091d83d3
567 changed files with 483 additions and 463 deletions
Download Patch File Download Diff File Expand all files Collapse all files

181
src/sound/snd_opl.c Normal file
View File

@@ -0,0 +1,181 @@
/* Copyright holders: Sarah Walker, SA1988
see COPYING for more details
*/
#include <stdint.h>
#include <stdlib.h>
#include "../ibm.h"
#include "../io.h"
#include "../timer.h"
#include "sound.h"
#include "snd_opl.h"
#include "snd_dbopl.h"
/*Interfaces between PCem and the actual OPL emulator*/
uint8_t opl2_read(uint16_t a, void *priv)
{
opl_t *opl = (opl_t *)priv;
cycles -= (int)(isa_timing * 8);
opl2_update2(opl);
return opl_read(0, a);
}
void opl2_write(uint16_t a, uint8_t v, void *priv)
{
opl_t *opl = (opl_t *)priv;
opl2_update2(opl);
opl_write(0, a, v);
opl_write(1, a, v);
}
uint8_t opl2_l_read(uint16_t a, void *priv)
{
opl_t *opl = (opl_t *)priv;
cycles -= (int)(isa_timing * 8);
opl2_update2(opl);
return opl_read(0, a);
}
void opl2_l_write(uint16_t a, uint8_t v, void *priv)
{
opl_t *opl = (opl_t *)priv;
opl2_update2(opl);
opl_write(0, a, v);
}
uint8_t opl2_r_read(uint16_t a, void *priv)
{
opl_t *opl = (opl_t *)priv;
cycles -= (int)(isa_timing * 8);
opl2_update2(opl);
return opl_read(1, a);
}
void opl2_r_write(uint16_t a, uint8_t v, void *priv)
{
opl_t *opl = (opl_t *)priv;
opl2_update2(opl);
opl_write(1, a, v);
}
uint8_t opl3_read(uint16_t a, void *priv)
{
opl_t *opl = (opl_t *)priv;
cycles -= (int)(isa_timing * 8);
opl3_update2(opl);
return opl_read(0, a);
}
void opl3_write(uint16_t a, uint8_t v, void *priv)
{
opl_t *opl = (opl_t *)priv;
opl3_update2(opl);
opl_write(0, a, v);
}
void opl2_update2(opl_t *opl)
{
if (opl->pos < sound_pos_global)
{
opl2_update(0, &opl->buffer[opl->pos*2], sound_pos_global - opl->pos);
opl2_update(1, &opl->buffer[opl->pos*2 + 1], sound_pos_global - opl->pos);
for (; opl->pos < sound_pos_global; opl->pos++)
{
opl->filtbuf[0] = opl->buffer[opl->pos*2] = (opl->buffer[opl->pos*2] / 2);
opl->filtbuf[1] = opl->buffer[opl->pos*2+1] = (opl->buffer[opl->pos*2+1] / 2);
}
}
}
void opl3_update2(opl_t *opl)
{
if (opl->pos < sound_pos_global)
{
opl3_update(0, &opl->buffer[opl->pos*2], sound_pos_global - opl->pos);
for (; opl->pos < sound_pos_global; opl->pos++)
{
opl->filtbuf[0] = opl->buffer[opl->pos*2] = (opl->buffer[opl->pos*2] / 2);
opl->filtbuf[1] = opl->buffer[opl->pos*2+1] = (opl->buffer[opl->pos*2+1] / 2);
}
}
}
void ym3812_timer_set_0(void *param, int timer, int64_t period)
{
opl_t *opl = (opl_t *)param;
opl->timers[0][timer] = period * TIMER_USEC * 20;
if (!opl->timers[0][timer]) opl->timers[0][timer] = 1;
opl->timers_enable[0][timer] = period ? 1 : 0;
}
void ym3812_timer_set_1(void *param, int timer, int64_t period)
{
opl_t *opl = (opl_t *)param;
opl->timers[1][timer] = period * TIMER_USEC * 20;
if (!opl->timers[1][timer]) opl->timers[1][timer] = 1;
opl->timers_enable[1][timer] = period ? 1 : 0;
}
void ymf262_timer_set(void *param, int timer, int64_t period)
{
opl_t *opl = (opl_t *)param;
opl->timers[0][timer] = period * TIMER_USEC * 20;
if (!opl->timers[0][timer]) opl->timers[0][timer] = 1;
opl->timers_enable[0][timer] = period ? 1 : 0;
}
static void opl_timer_callback00(void *p)
{
opl_t *opl = (opl_t *)p;
opl->timers_enable[0][0] = 0;
opl_timer_over(0, 0);
}
static void opl_timer_callback01(void *p)
{
opl_t *opl = (opl_t *)p;
opl->timers_enable[0][1] = 0;
opl_timer_over(0, 1);
}
static void opl_timer_callback10(void *p)
{
opl_t *opl = (opl_t *)p;
opl->timers_enable[1][0] = 0;
opl_timer_over(1, 0);
}
static void opl_timer_callback11(void *p)
{
opl_t *opl = (opl_t *)p;
opl->timers_enable[1][1] = 0;
opl_timer_over(1, 1);
}
void opl2_init(opl_t *opl)
{
opl_init(ym3812_timer_set_0, opl, 0, 0);
opl_init(ym3812_timer_set_1, opl, 1, 0);
timer_add(opl_timer_callback00, &opl->timers[0][0], &opl->timers_enable[0][0], (void *)opl);
timer_add(opl_timer_callback01, &opl->timers[0][1], &opl->timers_enable[0][1], (void *)opl);
timer_add(opl_timer_callback10, &opl->timers[1][0], &opl->timers_enable[1][0], (void *)opl);
timer_add(opl_timer_callback11, &opl->timers[1][1], &opl->timers_enable[1][1], (void *)opl);
}
void opl3_init(opl_t *opl)
{
opl_init(ymf262_timer_set, opl, 0, 1);
timer_add(opl_timer_callback00, &opl->timers[0][0], &opl->timers_enable[0][0], (void *)opl);
timer_add(opl_timer_callback01, &opl->timers[0][1], &opl->timers_enable[0][1], (void *)opl);
}