summaryrefslogtreecommitdiff
path: root/include/scanline_effect.h
diff options
context:
space:
mode:
authorPikalaxALT <pikalaxalt@gmail.com>2018-02-11 20:12:40 -0500
committerPikalaxALT <pikalaxalt@gmail.com>2018-02-11 20:12:40 -0500
commit590c4b500b9dd37d372a935865aa4df0ab0bf43c (patch)
tree5572d76c91e106e74e1401076f130fb902f6b67b /include/scanline_effect.h
parentbc063b45d05716d1eab283f6d474bcdc601cafde (diff)
parent14a76793e596d612efd273169c4172922c270f13 (diff)
Merge branch 'master' into record_mixing
Diffstat (limited to 'include/scanline_effect.h')
-rw-r--r--include/scanline_effect.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/include/scanline_effect.h b/include/scanline_effect.h
new file mode 100644
index 000000000..eb837e7e2
--- /dev/null
+++ b/include/scanline_effect.h
@@ -0,0 +1,47 @@
+#ifndef GUARD_SCANLINE_EFFECT_H
+#define GUARD_SCANLINE_EFFECT_H
+
+// DMA control value to transfer a single 16-bit value at HBlank
+#define SCANLINE_EFFECT_DMACNT_16BIT (((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_SRC_INC | DMA_DEST_INC | DMA_16BIT | DMA_DEST_RELOAD) << 16) | 1)
+
+#define SCANLINE_EFFECT_REG_BG0HOFS (REG_ADDR_BG0HOFS - REG_ADDR_BG0HOFS)
+#define SCANLINE_EFFECT_REG_BG0VOFS (REG_ADDR_BG0VOFS - REG_ADDR_BG0HOFS)
+#define SCANLINE_EFFECT_REG_BG1HOFS (REG_ADDR_BG1HOFS - REG_ADDR_BG0HOFS)
+#define SCANLINE_EFFECT_REG_BG1VOFS (REG_ADDR_BG1VOFS - REG_ADDR_BG0HOFS)
+#define SCANLINE_EFFECT_REG_BG2HOFS (REG_ADDR_BG2HOFS - REG_ADDR_BG0HOFS)
+#define SCANLINE_EFFECT_REG_BG2VOFS (REG_ADDR_BG2VOFS - REG_ADDR_BG0HOFS)
+#define SCANLINE_EFFECT_REG_BG3HOFS (REG_ADDR_BG3HOFS - REG_ADDR_BG0HOFS)
+#define SCANLINE_EFFECT_REG_BG3VOFS (REG_ADDR_BG3VOFS - REG_ADDR_BG0HOFS)
+
+struct ScanlineEffectParams
+{
+ volatile void *dmaDest;
+ u32 dmaControl;
+ u8 initState;
+ u8 unused9;
+};
+
+struct ScanlineEffect
+{
+ void *dmaSrcBuffers[2];
+ volatile void *dmaDest;
+ u32 dmaControl;
+ void (*setFirstScanlineReg)(void);
+ u8 srcBuffer;
+ u8 state;
+ u8 unused16;
+ u8 unused17;
+ u8 waveTaskId;
+};
+
+extern struct ScanlineEffect gScanlineEffect;
+
+extern u16 gScanlineEffectRegBuffers[2][0x3C0];
+
+void ScanlineEffect_Stop(void);
+void ScanlineEffect_Clear(void);
+void ScanlineEffect_SetParams(struct ScanlineEffectParams);
+void ScanlineEffect_InitHBlankDmaTransfer(void);
+u8 ScanlineEffect_InitWave(u8 startLine, u8 endLine, u8 frequency, u8 amplitude, u8 delayInterval, u8 regOffset, bool8 a7);
+
+#endif // GUARD_SCANLINE_EFFECT_H