convert DSi I2C and camera

src/DSi_Camera.h

@@ -21,38 +21,15 @@
 
 #include "types.h"
 #include "Savestate.h"
+#include "DSi_I2C.h"
 
-namespace DSi_CamModule
-{
+class DSi_CamModule;
 
-class Camera;
-
-extern Camera* Camera0;
-extern Camera* Camera1;
-
-bool Init();
-void DeInit();
-void Reset();
-void Stop();
-
-void DoSavestate(Savestate* file);
-
-void IRQ(u32 param);
-
-void TransferScanline(u32 line);
-
-u8 Read8(u32 addr);
-u16 Read16(u32 addr);
-u32 Read32(u32 addr);
-void Write8(u32 addr, u8 val);
-void Write16(u32 addr, u16 val);
-void Write32(u32 addr, u32 val);
-
-class Camera
+class DSi_Camera : public DSi_I2CDevice
 {
 public:
-    Camera(u32 num);
-    ~Camera();
+    DSi_Camera(DSi_I2CHost* host, u32 num);
+    ~DSi_Camera();
 
     void DoSavestate(Savestate* file);
 
@@ -66,9 +43,9 @@ public:
     // lengths in words
     int TransferScanline(u32* buffer, int maxlen);
 
-    void I2C_Start();
-    u8 I2C_Read(bool last);
-    void I2C_Write(u8 val, bool last);
+    void Acquire();
+    u8 Read(bool last);
+    void Write(u8 val, bool last);
 
     void InputFrame(u32* data, int width, int height, bool rgb);
 
@@ -101,6 +78,47 @@ private:
     u32 FrameBuffer[640*480/2]; // YUYV framebuffer, two pixels per word
 };
 
-}
+
+class DSi_CamModule
+{
+public:
+    DSi_CamModule();
+    ~DSi_CamModule();
+    void Reset();
+    void Stop();
+    void DoSavestate(Savestate* file);
+
+    DSi_Camera* GetOuterCamera() { return Camera0; }
+    DSi_Camera* GetInnerCamera() { return Camera1; }
+
+    void IRQ(u32 param);
+
+    void TransferScanline(u32 line);
+
+    u8 Read8(u32 addr);
+    u16 Read16(u32 addr);
+    u32 Read32(u32 addr);
+    void Write8(u32 addr, u8 val);
+    void Write16(u32 addr, u16 val);
+    void Write32(u32 addr, u32 val);
+
+private:
+    DSi_Camera* Camera0; // 78 / facing outside
+    DSi_Camera* Camera1; // 7A / selfie cam
+
+    u16 ModuleCnt;
+    u16 Cnt;
+
+    u32 CropStart, CropEnd;
+
+    // pixel data buffer holds a maximum of 512 words, regardless of how long scanlines are
+    u32 DataBuffer[512];
+    u32 BufferReadPos, BufferWritePos;
+    u32 BufferNumLines;
+    DSi_Camera* CurCamera;
+
+    static const u32 kIRQInterval;
+    static const u32 kTransferStart;
+};
 
 #endif // DSI_CAMERA_H