32x: preliminary PWM implementation. 32x opts in menu

[picodrive.git] / pico / pico_int.h

diff --git a/pico/pico_int.h b/pico/pico_int.h
index d28067b..4f62a66 100644 (file)
--- a/pico/pico_int.h
+++ b/pico/pico_int.h
@@ -1,7 +1,7 @@
 // Pico Library - Internal Header File\r
 \r
 // (c) Copyright 2004 Dave, All rights reserved.\r
-// (c) Copyright 2006-2008 Grazvydas "notaz" Ignotas, all rights reserved.\r
+// (c) Copyright 2006-2009 Grazvydas "notaz" Ignotas, all rights reserved.\r
 // Free for non-commercial use.\r
 \r
 // For commercial use, separate licencing terms must be obtained.\r
@@ -418,6 +418,9 @@ typedef struct
 #define P32XV_nFEN  (1<< 1)\r
 #define P32XV_FS    (1<< 0)\r
 \r
+#define P32XP_FULL  (1<<15) // PWM\r
+#define P32XP_EMPTY (1<<14)\r
+\r
 #define P32XF_68KPOLL   (1 << 0)\r
 #define P32XF_MSH2POLL  (1 << 1)\r
 #define P32XF_SSH2POLL  (1 << 2)\r
@@ -433,6 +436,7 @@ typedef struct
 \r
 // real one is 4*2, but we use more because we don't lockstep\r
 #define DMAC_FIFO_LEN (4*4)\r
+#define PWM_BUFF_LEN 1024 // in one channel samples\r
 \r
 struct Pico32x\r
 {\r
@@ -447,6 +451,7 @@ struct Pico32x
   unsigned int sh2irqs;          // common irqs\r
   unsigned short dmac_fifo[DMAC_FIFO_LEN];\r
   unsigned int dmac_ptr;\r
+  unsigned int pwm_irq_sample_cnt;\r
 };\r
 \r
 struct Pico32xMem\r
@@ -460,6 +465,7 @@ struct Pico32xMem
   unsigned short pal[0x100];\r
   unsigned short pal_native[0x100];     // converted to native (for renderer)\r
   unsigned int   sh2_peri_regs[2][0x200/4]; // periphereal regs of SH2s\r
+  signed short   pwm[2*PWM_BUFF_LEN];   // PWM buffer for current frame\r
 };\r
 \r
 // area.c\r
@@ -671,6 +677,14 @@ void p32x_poll_event(int is_vdp);
 // 32x/draw.c\r
 void FinalizeLine32xRGB555(int sh, int line);\r
 \r
+// 32x/pwm.c\r
+unsigned int p32x_pwm_read16(unsigned int a);\r
+void p32x_pwm_write16(unsigned int a, unsigned int d);\r
+void p32x_pwm_refresh(void);\r
+void p32x_pwm_irq_check(void);\r
+void p32x_pwm_update(int *buf32, int length, int stereo);\r
+extern int pwm_frame_smp_cnt;\r
+\r
 /* avoid dependency on newer glibc */\r
 static __inline int isspace_(int c)\r
 {\r