arm7: decompile SND_capture

3 files changed, 25 insertions, 1 deletions

diff --git a/arm7/lib/include/SND_capture.h b/arm7/lib/include/SND_capture.h
index 78a09efa..1878f90e 100644
--- a/arm7/lib/include/SND_capture.h
+++ b/arm7/lib/include/SND_capture.h
@@ -1,6 +1,9 @@
 #ifndef GUARD_SND_CAPTURE_H
 #define GUARD_SND_CAPTURE_H
 
-BOOL SND_IsCaptureActive(s32 idx);
+#include "nitro/types.h"
+
+void SND_SetupCapture(int idx, int format, void *captureData, int size, BOOL loop, int capCtrlSrc, int capCtrlDst);
+BOOL SND_IsCaptureActive(int idx);
 
 #endif //GUARD_SND_CAPTURE_H
diff --git a/arm7/lib/include/registers.h b/arm7/lib/include/registers.h
index bc55d0d8..e9280957 100644
--- a/arm7/lib/include/registers.h
+++ b/arm7/lib/include/registers.h
@@ -12,6 +12,8 @@
 #define reg_SOUNDxPNT(x) (*((REGType16v *)0x400040A + ((int)x) * 0x10))
 #define reg_SOUNDxLEN(x) (*((REGType32v *)0x400040C + ((int)x) * 0x10))
 
+#define reg_SNDCAPxCNT(x) (*((REGType8v *)0x4000508 + ((int)(x))))
+
 #define EXTKEYIN_X (1<<0)
 #define EXTKEYIN_Y (1<<1)
 #define EXTKEYIN_DEBUG (1<<3)
diff --git a/arm7/lib/src/SND_capture.c b/arm7/lib/src/SND_capture.c
new file mode 100644
index 00000000..8b604d10
--- /dev/null
+++ b/arm7/lib/src/SND_capture.c
@@ -0,0 +1,19 @@
+#include "SND_capture.h"
+
+#include "registers.h"
+
+enum SNDLoop {
+    SND_CAP_LOOP = 0, SND_CAP_ONESHOT = 1
+};
+
+void SND_SetupCapture(int idx, int format, void *captureData, int size, BOOL loop, int capCtrlSrc, int capCtrlDst) {
+    int off = idx * 8;
+
+    reg_SNDCAPxCNT(idx) = (u8)((format << 3) | ((loop ? SND_CAP_LOOP : SND_CAP_ONESHOT) << 2) | (capCtrlSrc << 1) | capCtrlDst);
+    *(vu32 *)(0x4000510 + off) = (u32)captureData;
+    *(vu16 *)(0x4000514 + off) = (u16)size;
+}
+
+BOOL SND_IsCaptureActive(int idx) {
+    return (reg_SNDCAPxCNT(idx) & 0x80) != 0;
+}