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-rw-r--r--fmdsp/fmdsp.c252
1 files changed, 252 insertions, 0 deletions
diff --git a/fmdsp/fmdsp.c b/fmdsp/fmdsp.c
new file mode 100644
index 0000000..4698842
--- /dev/null
+++ b/fmdsp/fmdsp.c
@@ -0,0 +1,252 @@
+#include "fmdsp.h"
+#include "fmdsp_sprites.h"
+#include "fmdriver/fmdriver.h"
+
+static void vramblit(uint8_t *vram, int x, int y,
+ const uint8_t *data, int w, int h) {
+ for (int yi = 0; yi < h; yi++) {
+ for (int xi = 0; xi < w; xi++) {
+ vram[(y+yi)*PC98_W+(x+xi)] = data[yi*w+xi];
+ }
+ }
+}
+
+static void vramblit_color(uint8_t *vram, int x, int y,
+ const uint8_t *data, int w, int h,
+ uint8_t color) {
+ for (int yi = 0; yi < h; yi++) {
+ for (int xi = 0; xi < w; xi++) {
+ vram[(y+yi)*PC98_W+(x+xi)] = data[yi*w+xi] ? color : 0;
+ }
+ }
+}
+
+static void vramblit_key(uint8_t *vram, int x, int y,
+ const uint8_t *data, int w, int h,
+ uint8_t key, uint8_t color) {
+ for (int yi = 0; yi < h; yi++) {
+ for (int xi = 0; xi < w; xi++) {
+ uint8_t d = data[yi*w+xi];
+ if (d == (key+1)) {
+ vram[(y+yi)*PC98_W+(x+xi)] = color;
+ }
+ }
+ }
+}
+
+void fmdsp_init(struct fmdsp *fmdsp) {
+ for (int i = 0; i < FMDSP_PALETTE_COLORS; i++) {
+ fmdsp->palette[i*3+0] = s_palettes[0][i*3+0];
+ fmdsp->palette[i*3+1] = s_palettes[0][i*3+1];
+ fmdsp->palette[i*3+2] = s_palettes[0][i*3+2];
+ }
+}
+
+
+static bool sjis_is_mb_start(uint8_t c) {
+ if (0x81 <= c && c <= 0x9f) return true;
+ if (0xe0 <= c && c <= 0xef) return true;
+ return false;
+}
+
+static uint16_t sjis2jis(uint8_t sjis_1st, uint8_t sjis_2nd) {
+ uint16_t jis;
+ if (sjis_1st >= 0xe0) sjis_1st -= 0x40;
+ sjis_1st -= 0x81;
+ jis = sjis_1st << 9;
+ if (sjis_2nd >= 0x80) sjis_2nd--;
+ if (sjis_2nd >= 0x9e) {
+ jis |= 0x100 | (sjis_2nd - 0x9e);
+ } else {
+ jis |= (sjis_2nd - 0x40);
+ }
+ jis += 0x2121;
+ return jis;
+}
+
+static void vram_putchar(uint16_t ptr, uint8_t *vram, const uint8_t *font,
+ int x, int y, uint8_t color) {
+ for (int yi = 0; yi < 16; yi++) {
+ for (int xi = 0; xi < 8; xi++) {
+ if (font[(ptr<<4)+yi] & (1<<(7-xi))) {
+ vram[(y+yi)*PC98_W+(x+xi)] = color;
+ }
+ }
+ }
+}
+
+static void fmdsp_putline(const char *strptr, uint8_t *vram, const uint8_t *font,
+ int y, uint8_t color) {
+ const uint8_t *cp932str = (const uint8_t *)strptr;
+ bool sjis_is2nd = false;
+ uint8_t sjis_1st;
+ int x = 0;
+
+ while (*cp932str) {
+ if (!sjis_is2nd) {
+ if (!sjis_is_mb_start(*cp932str)) {
+ if (*cp932str == '\t') {
+ if ((x+8*8) > PC98_W) return;
+ x += 8*8;
+ x &= ~(8*8-1);
+ cp932str++;
+ } else {
+ if ((x+8) > PC98_W) return;
+ vram_putchar(0x8000+*cp932str++, vram, font, x, y, color);
+ x += 8;
+ }
+ } else {
+ sjis_is2nd = true;
+ sjis_1st = *cp932str++;
+ }
+ } else {
+ uint8_t sjis_2nd = *cp932str++;
+ uint16_t jis = sjis2jis(sjis_1st, sjis_2nd);
+ uint8_t jis_1st = jis >> 8;
+ uint8_t jis_2nd = jis;
+ bool half = (jis_1st == 0x29);
+ if ((x+(half ? 8 : 16)) > PC98_W) return;
+ vram_putchar((jis_2nd<<8) | (jis_1st-0x20), vram, font, x, y, color);
+ x += 8;
+ if (!half) {
+ vram_putchar((jis_2nd<<8) | (jis_1st-0x20+0x80), vram, font, x, y, color);
+ x += 8;
+ }
+ sjis_is2nd = false;
+ }
+ }
+}
+
+void fmdsp_vram_init(struct fmdsp *fmdsp,
+ struct fmdriver_work *work,
+ const uint8_t *font,
+ uint8_t *vram) {
+ for (int y = 0; y < PC98_H; y++) {
+ for (int x = 0; x < PC98_W; x++) {
+ vram[y*PC98_W+x] = 0;
+ }
+ }
+ for (int t = 0; t < 10; t++) {
+ vramblit(vram, 1, TRACK_H*t+7, s_track, TNAME_W, TNAME_H);
+ vramblit(vram, KEY_LEFT_X, TRACK_H*t+KEY_Y, s_key_left, KEY_LEFT_W, KEY_H);
+ for (int i = 0; i < KEY_OCTAVES; i++) {
+ vramblit(vram, KEY_X+KEY_W*i, TRACK_H*t+KEY_Y,
+ s_key_bg, KEY_W, KEY_H);
+ }
+ vramblit(vram, KEY_X+KEY_W*KEY_OCTAVES, TRACK_H*t+KEY_Y,
+ s_key_right, KEY_RIGHT_W, KEY_H);
+ vramblit_color(vram, BAR_L_X, TRACK_H*t+BAR_Y,
+ s_bar_l, BAR_L_W, BAR_H, 3);
+ for (int i = 0; i < BAR_CNT; i++) {
+ vramblit_color(vram, BAR_X+BAR_W*i, TRACK_H*t+BAR_Y,
+ s_bar, BAR_W, BAR_H, 3);
+ }
+ }
+ vramblit(vram, PLAYING_X, PLAYING_Y,
+ s_playing, PLAYING_W, PLAYING_H);
+ for (int x = 74; x < PC98_W; x++) {
+ vram[332*PC98_W+x] = 7;
+ }
+ int height = (16+3)*3+8;
+ for (int y = PC98_H-height; y < PC98_H; y++) {
+ for (int x = 0; x < PC98_W; x++) {
+ vram[y*PC98_W+x] = (y&1)^(x&1) ? 3 : 0;
+ }
+ }
+ vram[(PC98_H-height)*PC98_W] = 0;
+ vram[(PC98_H-1)*PC98_W] = 0;
+ for (int i = 0; i < 3; i++) {
+ fmdsp_putline(work->comment[i], vram, font, COMMENT_Y+COMMENT_H*i, 2);
+ }
+}
+
+void fmdsp_update(struct fmdsp *fmdsp,
+ const struct fmdriver_work *work, uint8_t *vram) {
+ for (int t = 0; t < 10; t++) {
+ struct fmdriver_track_status *track = &work->track_status[t];
+ uint8_t *track_type;
+ switch (track->type) {
+ case FMDRIVER_TRACK_FM:
+ track_type = s_t_fm;
+ break;
+ case FMDRIVER_TRACK_SSG:
+ track_type = s_t_ssg;
+ break;
+ case FMDRIVER_TRACK_ADPCM:
+ track_type = s_t_adpcm;
+ break;
+ case FMDRIVER_TRACK_PPZ8:
+ track_type = s_t_ppz8;
+ break;
+ }
+ vramblit(vram, 1, TRACK_H*t+1, track_type, TNAME_W, TNAME_H);
+ vramblit(vram, NUM_X+NUM_W*0, TRACK_H*t+1, s_num[(track->num/10)%10], NUM_W, NUM_H);
+ vramblit(vram, NUM_X+NUM_W*1, TRACK_H*t+1, s_num[track->num%10], NUM_W, NUM_H);
+ for (int i = 0; i < KEY_OCTAVES; i++) {
+ vramblit(vram, KEY_X+KEY_W*i, TRACK_H*t+KEY_Y,
+ s_key_bg, KEY_W, KEY_H);
+ if (track->playing) {
+ if (track->actual_key >> 4 == i) {
+ vramblit_key(vram, KEY_X+KEY_W*i, TRACK_H*t+KEY_Y,
+ s_key_mask, KEY_W, KEY_H,
+ track->actual_key & 0xf, 8);
+ }
+ if (track->key >> 4 == i) {
+ vramblit_key(vram, KEY_X+KEY_W*i, TRACK_H*t+KEY_Y,
+ s_key_mask, KEY_W, KEY_H,
+ track->key & 0xf, 6);
+ }
+ }
+ }
+ uint8_t color_on = track->key == 0xff ? 7 : 2;
+ if (!track->playing) color_on = 3;
+ vramblit_color(vram, BAR_L_X, TRACK_H*t+BAR_Y,
+ s_bar_l, BAR_L_W, BAR_H, color_on);
+ for (int i = 0; i < BAR_CNT; i++) {
+ int c = (i < (track->ticks_left>>2)) ? color_on : 3;
+ vramblit_color(vram, BAR_X+BAR_W*i, TRACK_H*t+BAR_Y,
+ s_bar, BAR_W, BAR_H, c);
+ }
+ vramblit_color(vram, BAR_X+BAR_W*(track->ticks>>2), TRACK_H*t+BAR_Y,
+ s_bar, BAR_W, BAR_H, 7);
+ }
+}
+
+void fmdsp_vrampalette(struct fmdsp *fmdsp, const uint8_t *vram, uint8_t *vram32, int stride) {
+ for (int y = 0; y < PC98_H; y++) {
+ for (int x = 0; x < PC98_W; x++) {
+ uint8_t r = fmdsp->palette[vram[y*PC98_W+x]*3+0];
+ uint8_t g = fmdsp->palette[vram[y*PC98_W+x]*3+1];
+ uint8_t b = fmdsp->palette[vram[y*PC98_W+x]*3+2];
+ uint32_t data = (((uint32_t)r)<<16) | (((uint32_t)g)<<8) | ((uint32_t)b);
+ uint32_t *row = (uint32_t *)(vram32 + y*stride);
+ row[x] = data;
+ }
+ }
+}
+
+//2/1 - 7/14
+// 0x21 - 0x7e
+static void fontrom_copy_rows(uint8_t *font, const uint8_t *fontrom,
+ int rowstart, int rowend) {
+ for (int row = rowstart; row < rowend; row++) {
+ for (int cell = 0x20; cell < 0x80; cell++) {
+ for (int y = 0; y < 16; y++) {
+ // left
+ font[0x000+((row-0x20)<<4)+(cell<<12)+y] = fontrom[0x800+(0x60*16*2*(row-0x20))+(cell<<5)+y];
+ // right
+ font[0x800+((row-0x20)<<4)+(cell<<12)+y] = fontrom[0x800+(0x60*16*2*(row-0x20))+(cell<<5)+y+16];
+ }
+ }
+ }
+}
+
+void fmdsp_font_from_fontrom(uint8_t *font, const uint8_t *fontrom) {
+ // ANK
+ for (int i = 0; i < 256*16; i++) {
+ font[0x80000+i] = fontrom[0x800+i];
+ }
+ fontrom_copy_rows(font, fontrom, 0x21, 0x50);
+ fontrom_copy_rows(font, fontrom, 0x50, 0x76);
+ fontrom_copy_rows(font, fontrom, 0x78, 0x7d);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 18:30:50 +0000