o add bsnes

2009-04-08 21:29:36 +02:00
parent bcb4a055e9
commit 27b58a09f2
413 changed files with 71887 additions and 0 deletions
--- a/bsnes/snes/video/video.cpp
+++ b/bsnes/snes/video/video.cpp
@@ -0,0 +1,103 @@
+#ifdef SNES_CPP
+
+const uint8_t SNES::Video::cursor[15 * 15] = {
+  0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,
+  0,0,0,0,1,1,2,2,2,1,1,0,0,0,0,
+  0,0,0,1,2,2,1,2,1,2,2,1,0,0,0,
+  0,0,1,2,1,1,0,1,0,1,1,2,1,0,0,
+  0,1,2,1,0,0,0,1,0,0,0,1,2,1,0,
+  0,1,2,1,0,0,1,2,1,0,0,1,2,1,0,
+  1,2,1,0,0,1,1,2,1,1,0,0,1,2,1,
+  1,2,2,1,1,2,2,2,2,2,1,1,2,2,1,
+  1,2,1,0,0,1,1,2,1,1,0,0,1,2,1,
+  0,1,2,1,0,0,1,2,1,0,0,1,2,1,0,
+  0,1,2,1,0,0,0,1,0,0,0,1,2,1,0,
+  0,0,1,2,1,1,0,1,0,1,1,2,1,0,0,
+  0,0,0,1,2,2,1,2,1,2,2,1,0,0,0,
+  0,0,0,0,1,1,2,2,2,1,1,0,0,0,0,
+  0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,
+};
+
+void SNES::Video::draw_cursor(uint16_t color, int x, int y) {
+  for(int cy = 0; cy < 15; cy++) {
+    int vy = y + cy - 7;
+    if(vy <= 0 || vy >= 240) continue;  //do not draw offscreen
+
+    bool hires = (pline_width[vy] == 512);
+    for(int cx = 0; cx < 15; cx++) {
+      int vx = x + cx - 7;
+      if(vx < 0 || vx >= 256) continue;  //do not draw offscreen
+      uint8_t pixel = cursor[cy * 15 + cx];
+      if(pixel == 0) continue;
+      uint16_t pixelcolor = (pixel == 1) ? 0 : color;
+
+      if(hires == false) {
+        *((uint16_t*)ppu.output + vy * 1024 +   0 + vx) = pixelcolor;
+        *((uint16_t*)ppu.output + vy * 1024 + 512 + vx) = pixelcolor;
+      } else {
+        *((uint16_t*)ppu.output + vy * 1024 +   0 + vx * 2 + 0) = pixelcolor;
+        *((uint16_t*)ppu.output + vy * 1024 + 512 + vx * 2 + 0) = pixelcolor;
+        *((uint16_t*)ppu.output + vy * 1024 +   0 + vx * 2 + 1) = pixelcolor;
+        *((uint16_t*)ppu.output + vy * 1024 + 512 + vx * 2 + 1) = pixelcolor;
+      }
+    }
+  }
+}
+
+void SNES::Video::update() {
+  uint16_t *data = (uint16_t*)ppu.output;
+  unsigned width, height;
+
+  switch(snes.input.port[1].device) {
+    case SNES::Input::DeviceSuperScope: draw_cursor(0x001f, snes.input.port[1].superscope.x, snes.input.port[1].superscope.y); break;
+    case SNES::Input::DeviceJustifiers: draw_cursor(0x02e0, snes.input.port[1].justifier.x2, snes.input.port[1].justifier.y2); //fallthrough
+    case SNES::Input::DeviceJustifier:  draw_cursor(0x001f, snes.input.port[1].justifier.x1, snes.input.port[1].justifier.y1); break;
+  }
+
+  unsigned yoffset = 1;  //scanline 0 is always black, skip this line for video output
+  if(mode == ModeNTSC && ppu.overscan()) yoffset += 8;  //NTSC overscan centers x240 height image
+
+  switch(mode) { default:
+    case ModeNTSC: { width = 256; height = 224; } break;
+    case ModePAL:  { width = 256; height = 239; } break;
+  }
+
+  if(frame_hires) width <<= 1;
+  if(frame_interlace) height <<= 1;
+
+  snesinterface.video_refresh(
+    data + yoffset * 1024,
+    /* pitch  = */ height <= 240 ? 2048 : 1024,
+    /* line[] = */ height <= 240 ? (pline_width + yoffset) : (iline_width + yoffset * 2),
+    width, height
+  );
+
+  frame_hires = false;
+  frame_interlace = false;
+}
+
+void SNES::Video::scanline() {
+  unsigned y = ppu.vcounter();
+  if(y >= 240) return;
+
+  unsigned width = (ppu.hires() == false ? 256 : 512);
+  pline_width[y] = width;
+  iline_width[y * 2 + (int)ppu.field()] = width;
+
+  frame_hires |= ppu.hires();
+  frame_interlace |= ppu.interlace();
+}
+
+void SNES::Video::set_mode(Mode mode_) {
+  mode = mode_;
+}
+
+void SNES::Video::init() {
+  for(unsigned i = 0; i < 240; i++) pline_width[i] = 256;
+  for(unsigned i = 0; i < 480; i++) iline_width[i] = 256;
+  frame_hires = false;
+  frame_interlace = false;
+  set_mode(ModeNTSC);
+}
+
+#endif  //ifdef SNES_CPP