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- // (c) Copyright 2006-2009 notaz, All rights reserved.
- // Free for non-commercial use.
- // For commercial use, separate licencing terms must be obtained.
- #include <stdio.h>
- #include <stdlib.h>
- #include "plat_gp2x.h"
- #include "soc.h"
- #include "../common/plat.h"
- #include "../common/menu.h"
- #include "../common/arm_utils.h"
- #include "../common/fonts.h"
- #include "../common/emu.h"
- #include "../common/config.h"
- #include "../linux/sndout_oss.h"
- #include "version.h"
- #include <pico/pico_int.h>
- #include <pico/patch.h>
- #include <pico/sound/mix.h>
- #include <zlib/zlib.h>
- //#define PFRAMES
- #ifdef BENCHMARK
- #define OSD_FPS_X 220
- #else
- #define OSD_FPS_X 260
- #endif
- extern int crashed_940;
- static short __attribute__((aligned(4))) sndBuffer[2*(44100+100)/50];
- static unsigned char PicoDraw2FB_[(8+320) * (8+240+8)];
- unsigned char *PicoDraw2FB = PicoDraw2FB_;
- static int osd_fps_x, osd_y;
- extern void *gp2x_screens[4];
- int plat_get_root_dir(char *dst, int len)
- {
- extern char **g_argv;
- int j;
- strncpy(dst, g_argv[0], len);
- len -= 32; // reserve
- if (len < 0) len = 0;
- dst[len] = 0;
- for (j = strlen(dst); j > 0; j--)
- if (dst[j] == '/') { dst[j+1] = 0; break; }
- return j + 1;
- }
- static void scaling_update(void)
- {
- PicoOpt &= ~(POPT_DIS_32C_BORDER|POPT_EN_SOFTSCALE);
- switch (currentConfig.scaling) {
- default:break;
- case EOPT_SCALE_HW_H:
- case EOPT_SCALE_HW_HV:
- PicoOpt |= POPT_DIS_32C_BORDER;
- break;
- case EOPT_SCALE_SW_H:
- PicoOpt |= POPT_EN_SOFTSCALE;
- break;
- }
- }
- void pemu_prep_defconfig(void)
- {
- gp2x_soc_t soc;
- memset(&defaultConfig, 0, sizeof(defaultConfig));
- defaultConfig.EmuOpt = 0x9d | EOPT_RAM_TIMINGS|EOPT_CONFIRM_SAVE|EOPT_EN_CD_LEDS;
- defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;
- defaultConfig.s_PsndRate = 44100;
- defaultConfig.s_PicoRegion = 0; // auto
- defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
- defaultConfig.s_PicoCDBuffers = 0;
- defaultConfig.Frameskip = -1; // auto
- defaultConfig.CPUclock = default_cpu_clock;
- defaultConfig.volume = 50;
- defaultConfig.gamma = 100;
- defaultConfig.scaling = 0;
- defaultConfig.turbo_rate = 15;
- soc = soc_detect();
- if (soc == SOCID_MMSP2)
- defaultConfig.s_PicoOpt |= POPT_EXT_FM;
- else if (soc == SOCID_POLLUX)
- defaultConfig.EmuOpt |= EOPT_WIZ_TEAR_FIX|EOPT_SHOW_RTC;
- }
- static void (*osd_text)(int x, int y, const char *text);
- static void osd_text8(int x, int y, const char *text)
- {
- int len = strlen(text)*8;
- int *p, i, h, offs;
- len = (len+3) >> 2;
- for (h = 0; h < 8; h++) {
- offs = (x + g_screen_width * (y+h)) & ~3;
- p = (int *) ((char *)g_screen_ptr + offs);
- for (i = len; i; i--, p++)
- *p = 0xe0e0e0e0;
- }
- emu_text_out8(x, y, text);
- }
- static void osd_text16(int x, int y, const char *text)
- {
- int len = strlen(text)*8;
- int *p, i, h, offs;
- len = (len+1) >> 1;
- for (h = 0; h < 8; h++) {
- offs = (x + g_screen_width * (y+h)) & ~1;
- p = (int *) ((short *)g_screen_ptr + offs);
- for (i = len; i; i--, p++)
- *p = (*p >> 2) & 0x39e7;
- }
- emu_text_out16(x, y, text);
- }
- static void osd_text8_rot(int x, int y, const char *text)
- {
- int len = strlen(text) * 8;
- char *p = (char *)g_screen_ptr + 240*(320-x) + y;
- while (len--) {
- memset(p, 0xe0, 8);
- p -= 240;
- }
- emu_text_out8_rot(x, y, text);
- }
- static void osd_text16_rot(int x, int y, const char *text)
- {
- int len = strlen(text) * 8;
- short *p = (short *)g_screen_ptr + 240*(320-x) + y;
- while (len--) {
- memset(p, 0, 8*2);
- p -= 240;
- }
- emu_text_out16_rot(x, y, text);
- }
- static void draw_cd_leds(void)
- {
- int led_reg, pitch, scr_offs, led_offs;
- led_reg = Pico_mcd->s68k_regs[0];
- if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
- pitch = 240;
- led_offs = -pitch * 6;
- scr_offs = pitch * (320 - 4);
- } else {
- pitch = 320;
- led_offs = 4;
- scr_offs = pitch * 2 + 4;
- }
- if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {
- #define p(x) px[(x) >> 2]
- // 8-bit modes
- unsigned int *px = (unsigned int *)((char *)g_screen_ptr + scr_offs);
- unsigned int col_g = (led_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
- unsigned int col_r = (led_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
- p(pitch*0) = p(pitch*1) = p(pitch*2) = col_g;
- p(pitch*0 + led_offs) = p(pitch*1 + led_offs) = p(pitch*2 + led_offs) = col_r;
- #undef p
- } else {
- #define p(x) px[(x)*2 >> 2] = px[((x)*2 >> 2) + 1]
- // 16-bit modes
- unsigned int *px = (unsigned int *)((short *)g_screen_ptr + scr_offs);
- unsigned int col_g = (led_reg & 2) ? 0x06000600 : 0;
- unsigned int col_r = (led_reg & 1) ? 0xc000c000 : 0;
- p(pitch*0) = p(pitch*1) = p(pitch*2) = col_g;
- p(pitch*0 + led_offs) = p(pitch*1 + led_offs) = p(pitch*2 + led_offs) = col_r;
- #undef p
- }
- }
- static void draw_pico_ptr(void)
- {
- unsigned short *p = (unsigned short *)g_screen_ptr;
- int x, y, pitch = 320;
- // only if pen enabled and for 16bit modes
- if (pico_inp_mode == 0 || (PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP))
- return;
- x = pico_pen_x + PICO_PEN_ADJUST_X;
- y = pico_pen_y + PICO_PEN_ADJUST_Y;
- if (!(Pico.video.reg[12]&1) && !(PicoOpt & POPT_DIS_32C_BORDER))
- x += 32;
- if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
- pitch = 240;
- p += (319 - x) * pitch + y;
- } else
- p += x + y * pitch;
- p[0] ^= 0xffff;
- p[pitch-1] ^= 0xffff;
- p[pitch] ^= 0xffff;
- p[pitch+1] ^= 0xffff;
- p[pitch*2] ^= 0xffff;
- }
- static int EmuScanBegin16(unsigned int num)
- {
- DrawLineDest = (unsigned short *) g_screen_ptr + g_screen_width * num;
- return 0;
- }
- static int EmuScanBegin8(unsigned int num)
- {
- DrawLineDest = (unsigned char *) g_screen_ptr + g_screen_width * num;
- return 0;
- }
- /* rot thing for Wiz */
- static unsigned char __attribute__((aligned(4))) rot_buff[320*4*2];
- static int EmuScanBegin16_rot(unsigned int num)
- {
- DrawLineDest = rot_buff + (num & 3) * 320 * 2;
- return 0;
- }
- static int EmuScanEnd16_rot(unsigned int num)
- {
- if ((num & 3) != 3)
- return 0;
- rotated_blit16(g_screen_ptr, rot_buff, num + 1,
- !(Pico.video.reg[12] & 1) && !(PicoOpt & POPT_EN_SOFTSCALE));
- return 0;
- }
- static int EmuScanBegin8_rot(unsigned int num)
- {
- DrawLineDest = rot_buff + (num & 3) * 320;
- return 0;
- }
- static int EmuScanEnd8_rot(unsigned int num)
- {
- if ((num & 3) != 3)
- return 0;
- rotated_blit8(g_screen_ptr, rot_buff, num + 1,
- !(Pico.video.reg[12] & 1));
- return 0;
- }
- static int localPal[0x100];
- static void (*vidcpyM2)(void *dest, void *src, int m32col, int with_32c_border);
- static int (*make_local_pal)(int fast_mode);
- static int make_local_pal_md(int fast_mode)
- {
- int pallen = 0xc0;
- bgr444_to_rgb32(localPal, Pico.cram);
- if (fast_mode)
- return 0x40;
- if (Pico.video.reg[0xC] & 8) { // shadow/hilight mode
- bgr444_to_rgb32_sh(localPal, Pico.cram);
- localPal[0xc0] = 0x0000c000;
- localPal[0xd0] = 0x00c00000;
- localPal[0xe0] = 0x00000000; // reserved pixels for OSD
- localPal[0xf0] = 0x00ffffff;
- pallen = 0x100;
- }
- else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes
- bgr444_to_rgb32(localPal+0x40, HighPal);
- bgr444_to_rgb32(localPal+0x80, HighPal+0x40);
- }
- else
- memcpy32(localPal+0x80, localPal, 0x40); // for spr prio mess
- return pallen;
- }
- static int make_local_pal_sms(int fast_mode)
- {
- unsigned short *spal = Pico.cram;
- unsigned int *dpal = (void *)localPal;
- unsigned int i, t;
- for (i = 0x40; i > 0; i--) {
- t = *spal++;
- t = ((t & 0x0003) << 22) | ((t & 0x000c) << 12) | ((t & 0x0030) << 2);
- t |= t >> 2;
- t |= t >> 4;
- *dpal++ = t;
- }
- return 0x40;
- }
- void pemu_update_display(const char *fps, const char *notice)
- {
- int emu_opt = currentConfig.EmuOpt;
- int ret;
- if (PicoOpt & POPT_ALT_RENDERER)
- {
- // 8bit fast renderer
- if (Pico.m.dirtyPal) {
- Pico.m.dirtyPal = 0;
- ret = make_local_pal(1);
- // feed new palette to our device
- gp2x_video_setpalette(localPal, ret);
- }
- // a hack for VR
- if (PicoAHW & PAHW_SVP)
- memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);
- // do actual copy
- vidcpyM2(g_screen_ptr, PicoDraw2FB+328*8,
- !(Pico.video.reg[12] & 1), !(PicoOpt & POPT_DIS_32C_BORDER));
- }
- else if (!(emu_opt & EOPT_16BPP))
- {
- // 8bit accurate renderer
- if (Pico.m.dirtyPal)
- {
- Pico.m.dirtyPal = 0;
- ret = make_local_pal(0);
- gp2x_video_setpalette(localPal, ret);
- }
- }
- if (notice || (emu_opt & 2)) {
- if (notice)
- osd_text(4, osd_y, notice);
- if (emu_opt & 2)
- osd_text(osd_fps_x, osd_y, fps);
- }
- if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
- draw_cd_leds();
- if (PicoAHW & PAHW_PICO)
- draw_pico_ptr();
- gp2x_video_flip();
- }
- /* XXX */
- #ifdef __GP2X__
- unsigned int plat_get_ticks_ms(void)
- {
- return gp2x_get_ticks_ms();
- }
- unsigned int plat_get_ticks_us(void)
- {
- return gp2x_get_ticks_us();
- }
- #endif
- void plat_wait_till_us(unsigned int us_to)
- {
- unsigned int now;
- spend_cycles(1024);
- now = plat_get_ticks_us();
- while ((signed int)(us_to - now) > 512)
- {
- spend_cycles(1024);
- now = plat_get_ticks_us();
- }
- }
- void plat_video_wait_vsync(void)
- {
- gp2x_video_wait_vsync();
- }
- void plat_status_msg_clear(void)
- {
- int is_8bit = (PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP);
- if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
- /* ugh.. */
- int i, u, *p;
- if (is_8bit) {
- for (i = 0; i < 4; i++) {
- p = (int *)gp2x_screens[i] + (240-8) / 4;
- for (u = 320; u > 0; u--, p += 240/4)
- p[0] = p[1] = 0xe0e0e0e0;
- }
- } else {
- for (i = 0; i < 4; i++) {
- p = (int *)gp2x_screens[i] + (240-8)*2 / 4;
- for (u = 320; u > 0; u--, p += 240*2/4)
- p[0] = p[1] = p[2] = p[3] = 0;
- }
- }
- return;
- }
- if (is_8bit)
- gp2x_memset_all_buffers(320*232, 0xe0, 320*8);
- else
- gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);
- }
- void plat_status_msg_busy_next(const char *msg)
- {
- plat_status_msg_clear();
- pemu_update_display("", msg);
- emu_status_msg("");
- /* assumption: msg_busy_next gets called only when
- * something slow is about to happen */
- reset_timing = 1;
- }
- void plat_status_msg_busy_first(const char *msg)
- {
- gp2x_memcpy_all_buffers(g_screen_ptr, 0, 320*240*2);
- plat_status_msg_busy_next(msg);
- }
- static void vidResetMode(void)
- {
- PicoScanEnd = NULL;
- if (PicoOpt & POPT_ALT_RENDERER) {
- if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
- gp2x_video_changemode(-8);
- vidcpyM2 = vidcpy_m2_rot;
- osd_text = osd_text8_rot;
- } else {
- gp2x_video_changemode(8);
- vidcpyM2 = vidcpy_m2;
- osd_text = osd_text8;
- }
- }
- else if (currentConfig.EmuOpt & EOPT_16BPP) {
- PicoDrawSetColorFormat(1);
- if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
- gp2x_video_changemode(-16);
- PicoScanBegin = EmuScanBegin16_rot;
- PicoScanEnd = EmuScanEnd16_rot;
- osd_text = osd_text16_rot;
- } else {
- gp2x_video_changemode(16);
- PicoScanBegin = EmuScanBegin16;
- osd_text = osd_text16;
- }
- }
- else {
- PicoDrawSetColorFormat(2);
- if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
- gp2x_video_changemode(-8);
- PicoScanBegin = EmuScanBegin8_rot;
- PicoScanEnd = EmuScanEnd8_rot;
- osd_text = osd_text8_rot;
- } else {
- gp2x_video_changemode(8);
- PicoScanBegin = EmuScanBegin8;
- osd_text = osd_text8;
- }
- }
- if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {
- // setup pal for 8-bit modes
- localPal[0xc0] = 0x0000c000; // MCD LEDs
- localPal[0xd0] = 0x00c00000;
- localPal[0xe0] = 0x00000000; // reserved pixels for OSD
- localPal[0xf0] = 0x00ffffff;
- gp2x_video_setpalette(localPal, 0x100);
- gp2x_memset_all_buffers(0, 0xe0, 320*240);
- gp2x_video_flip();
- }
- Pico.m.dirtyPal = 1;
- // reset scaling
- if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))
- gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);
- else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);
- // palette converters for 8bit modes
- make_local_pal = (PicoAHW & PAHW_SMS) ? make_local_pal_sms : make_local_pal_md;
- }
- void plat_video_toggle_renderer(int is_next, int is_menu)
- {
- /* alt, 16bpp, 8bpp */
- if (PicoOpt & POPT_ALT_RENDERER) {
- PicoOpt &= ~POPT_ALT_RENDERER;
- if (is_next)
- currentConfig.EmuOpt |= EOPT_16BPP;
- } else if (!(currentConfig.EmuOpt & EOPT_16BPP)) {
- if (is_next)
- PicoOpt |= POPT_ALT_RENDERER;
- else
- currentConfig.EmuOpt |= EOPT_16BPP;
- } else {
- currentConfig.EmuOpt &= ~EOPT_16BPP;
- if (!is_next)
- PicoOpt |= POPT_ALT_RENDERER;
- }
- if (is_menu)
- return;
- vidResetMode();
- rendstatus_old = -1;
- if (PicoOpt & POPT_ALT_RENDERER) {
- emu_status_msg(" 8bit fast renderer");
- } else if (currentConfig.EmuOpt & EOPT_16BPP) {
- emu_status_msg("16bit accurate renderer");
- } else {
- emu_status_msg(" 8bit accurate renderer");
- }
- }
- #if 0 // TODO
- static void RunEventsPico(unsigned int events)
- {
- int ret, px, py, lim_x;
- static int pdown_frames = 0;
- // for F200
- ret = gp2x_touchpad_read(&px, &py);
- if (ret >= 0)
- {
- if (ret > 35000)
- {
- if (pdown_frames++ > 5)
- PicoPad[0] |= 0x20;
- pico_pen_x = px;
- pico_pen_y = py;
- if (!(Pico.video.reg[12]&1)) {
- pico_pen_x -= 32;
- if (pico_pen_x < 0) pico_pen_x = 0;
- if (pico_pen_x > 248) pico_pen_x = 248;
- }
- if (pico_pen_y > 224) pico_pen_y = 224;
- }
- else
- pdown_frames = 0;
- //if (ret == 0)
- // PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;
- }
- }
- #endif
- void plat_update_volume(int has_changed, int is_up)
- {
- static int prev_frame = 0, wait_frames = 0;
- int vol = currentConfig.volume;
- int need_low_volume = 0;
- gp2x_soc_t soc;
- soc = soc_detect();
- if ((PicoOpt & POPT_EN_STEREO) && soc == SOCID_MMSP2)
- need_low_volume = 1;
- if (has_changed)
- {
- if (need_low_volume && vol < 5 && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)
- wait_frames++;
- else {
- if (is_up) {
- if (vol < 99) vol++;
- } else {
- if (vol > 0) vol--;
- }
- wait_frames = 0;
- sndout_oss_setvol(vol, vol);
- currentConfig.volume = vol;
- }
- emu_status_msg("VOL: %02i", vol);
- prev_frame = Pico.m.frame_count;
- }
- if (!need_low_volume)
- return;
- /* set the right mixer func */
- if (vol >= 5)
- PsndMix_32_to_16l = mix_32_to_16l_stereo;
- else {
- mix_32_to_16l_level = 5 - vol;
- PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;
- }
- }
- static void updateSound(int len)
- {
- len <<= 1;
- if (PicoOpt & POPT_EN_STEREO)
- len <<= 1;
- if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
- return;
- /* avoid writing audio when lagging behind to prevent audio lag */
- if (PicoSkipFrame != 2)
- sndout_oss_write(PsndOut, len);
- }
- void pemu_sound_start(void)
- {
- static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
- PsndOut = NULL;
- // prepare sound stuff
- if (currentConfig.EmuOpt & EOPT_EN_SOUND)
- {
- int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
- int target_fps = Pico.m.pal ? 50 : 60;
- int frame_samples, snd_excess_add;
- int snd_rate_oss = PsndRate;
- gp2x_soc_t soc;
- soc = soc_detect();
- if (soc == SOCID_POLLUX) {
- /* POLLUX pain: DPLL1 / mclk_div / bitclk_div / 4 */
- switch (PsndRate) {
- case 44100: PsndRate = 44171; break; // 44170.673077
- case 22050: PsndRate = 22086; break; // 22085.336538
- case 11025: PsndRate = 11043; break; // 11042.668269
- default: break;
- }
- }
- #define SOUND_RERATE_FLAGS (POPT_EN_FM|POPT_EN_PSG|POPT_EN_STEREO|POPT_EXT_FM|POPT_EN_MCD_CDDA)
- if (PsndRate != PsndRate_old || Pico.m.pal != pal_old || ((PicoOpt & POPT_EXT_FM) && crashed_940) ||
- ((PicoOpt ^ PicoOpt_old) & SOUND_RERATE_FLAGS)) {
- PsndRerate(Pico.m.frame_count ? 1 : 0);
- }
- memset(sndBuffer, 0, sizeof(sndBuffer));
- PsndOut = sndBuffer;
- PicoWriteSound = updateSound;
- PsndRate_old = PsndRate;
- PicoOpt_old = PicoOpt;
- pal_old = Pico.m.pal;
- plat_update_volume(0, 0);
- frame_samples = PsndLen;
- snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;
- if (snd_excess_add != 0)
- frame_samples++;
- if (soc == SOCID_POLLUX)
- frame_samples *= 2; /* force larger buffer */
- printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
- PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);
- sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
- sndout_oss_start(snd_rate_oss, frame_samples, is_stereo);
- /* Wiz's sound hardware needs more prebuffer */
- if (soc == SOCID_POLLUX)
- updateSound(frame_samples);
- }
- }
- void pemu_sound_stop(void)
- {
- /* get back from Wiz pain */
- switch (PsndRate) {
- case 44171: PsndRate = 44100; break;
- case 22086: PsndRate = 22050; break;
- case 11043: PsndRate = 11025; break;
- default: break;
- }
- }
- void pemu_sound_wait(void)
- {
- // don't need to do anything, writes will block by themselves
- }
- void pemu_forced_frame(int opts)
- {
- int po_old = PicoOpt;
- int eo_old = currentConfig.EmuOpt;
- PicoOpt &= ~POPT_ALT_RENDERER;
- PicoOpt |= opts|POPT_ACC_SPRITES;
- currentConfig.EmuOpt |= EOPT_16BPP;
- PicoDrawSetColorFormat(1);
- PicoScanBegin = EmuScanBegin16;
- PicoScanEnd = NULL;
- Pico.m.dirtyPal = 1;
- PicoFrameDrawOnly();
- PicoOpt = po_old;
- currentConfig.EmuOpt = eo_old;
- }
- void plat_debug_cat(char *str)
- {
- }
- void emu_video_mode_change(int start_line, int line_count, int is_32cols)
- {
- int scalex = 320;
- osd_fps_x = OSD_FPS_X;
- osd_y = 232;
- if (is_32cols && (PicoOpt & POPT_DIS_32C_BORDER)) {
- scalex = 256;
- osd_fps_x = OSD_FPS_X - 64;
- }
- /* want vertical scaling and game is not in 240 line mode */
- if (currentConfig.scaling == EOPT_SCALE_HW_HV) {
- gp2x_video_RGB_setscaling(start_line, scalex, line_count);
- osd_y = start_line + line_count - 8;
- } else
- gp2x_video_RGB_setscaling(0, scalex, 240);
- // clear whole screen in all buffers
- if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP))
- gp2x_memset_all_buffers(0, 0xe0, 320*240);
- else
- gp2x_memset_all_buffers(0, 0, 320*240*2);
- }
- #if 0
- static void tga_dump(void)
- {
- #define BYTE unsigned char
- #define WORD unsigned short
- struct
- {
- BYTE IDLength; /* 00h Size of Image ID field */
- BYTE ColorMapType; /* 01h Color map type */
- BYTE ImageType; /* 02h Image type code */
- WORD CMapStart; /* 03h Color map origin */
- WORD CMapLength; /* 05h Color map length */
- BYTE CMapDepth; /* 07h Depth of color map entries */
- WORD XOffset; /* 08h X origin of image */
- WORD YOffset; /* 0Ah Y origin of image */
- WORD Width; /* 0Ch Width of image */
- WORD Height; /* 0Eh Height of image */
- BYTE PixelDepth; /* 10h Image pixel size */
- BYTE ImageDescriptor; /* 11h Image descriptor byte */
- } __attribute__((packed)) TGAHEAD;
- static unsigned short oldscr[320*240];
- FILE *f; char name[128]; int i;
- memset(&TGAHEAD, 0, sizeof(TGAHEAD));
- TGAHEAD.ImageType = 2;
- TGAHEAD.Width = 320;
- TGAHEAD.Height = 240;
- TGAHEAD.PixelDepth = 16;
- TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left
- #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?
- for (i = 0; i < 320*240; i++)
- if(oldscr[i] != CONV(((unsigned short *)g_screen_ptr)[i])) break;
- if (i < 320*240)
- {
- for (i = 0; i < 320*240; i++)
- oldscr[i] = CONV(((unsigned short *)g_screen_ptr)[i]);
- sprintf(name, "%05i.tga", Pico.m.frame_count);
- f = fopen(name, "wb");
- if (!f) { printf("!f\n"); exit(1); }
- fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);
- fwrite(oldscr, 1, 320*240*2, f);
- fclose(f);
- }
- }
- #endif
- void pemu_loop_prep(void)
- {
- static int gp2x_old_clock = -1, EmuOpt_old = 0, pal_old = 0;
- static int gp2x_old_gamma = 100;
- gp2x_soc_t soc;
- soc = soc_detect();
- if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_RAM_TIMINGS) {
- if (currentConfig.EmuOpt & EOPT_RAM_TIMINGS)
- set_ram_timings();
- else
- unset_ram_timings();
- }
- if (gp2x_old_clock < 0)
- gp2x_old_clock = default_cpu_clock;
- if (gp2x_old_clock != currentConfig.CPUclock) {
- printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);
- gp2x_set_cpuclk(currentConfig.CPUclock);
- gp2x_old_clock = currentConfig.CPUclock;
- printf(" done\n");
- }
- if (gp2x_old_gamma != currentConfig.gamma || ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_A_SN_GAMMA)) {
- set_lcd_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt & EOPT_A_SN_GAMMA));
- gp2x_old_gamma = currentConfig.gamma;
- printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));
- }
- if (((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_VSYNC) || Pico.m.pal != pal_old) {
- if ((currentConfig.EmuOpt & EOPT_VSYNC) || soc == SOCID_POLLUX)
- set_lcd_custom_rate(Pico.m.pal);
- else if (EmuOpt_old & EOPT_VSYNC)
- unset_lcd_custom_rate();
- }
- if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_MMUHACK)
- gp2x_make_fb_bufferable(currentConfig.EmuOpt & EOPT_MMUHACK);
- EmuOpt_old = currentConfig.EmuOpt;
- pal_old = Pico.m.pal;
- // make sure we are in correct mode
- vidResetMode();
- scaling_update();
- pemu_sound_start();
- }
- void pemu_loop_end(void)
- {
- int po_old = PicoOpt;
- int eo_old = currentConfig.EmuOpt;
- pemu_sound_stop();
- memset32(g_screen_ptr, 0, 320*240*2/4);
- /* do one more frame for menu bg */
- PicoOpt &= ~POPT_ALT_RENDERER;
- PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;
- currentConfig.EmuOpt |= EOPT_16BPP;
- PicoScanBegin = EmuScanBegin16;
- PicoScanEnd = NULL;
- PicoDrawSetColorFormat(1);
- Pico.m.dirtyPal = 1;
- PicoFrame();
- PicoOpt = po_old;
- currentConfig.EmuOpt = eo_old;
- }
- const char *plat_get_credits(void)
- {
- return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"
- "Credits:\n"
- "fDave: Cyclone 68000 core,\n"
- " base code of PicoDrive\n"
- "Reesy & FluBBa: DrZ80 core\n"
- "MAME devs: YM2612 and SN76496 cores\n"
- "rlyeh and others: minimal SDK\n"
- "Squidge: mmuhack\n"
- "Dzz: ARM940 sample\n"
- "GnoStiC / Puck2099: USB joy code\n"
- "craigix: GP2X hardware\n"
- "ketchupgun: skin design\n"
- "\n"
- "special thanks (for docs, ideas):\n"
- " Charles MacDonald, Haze,\n"
- " Stephane Dallongeville,\n"
- " Lordus, Exophase, Rokas,\n"
- " Nemesis, Tasco Deluxe";
- }
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