cd: rewrite pcm

[picodrive.git] / pico / pico_int.h

diff --git a/pico/pico_int.h b/pico/pico_int.h
index 08c7a20..ccc1a9b 100644 (file)
--- a/pico/pico_int.h
+++ b/pico/pico_int.h
@@ -378,13 +378,15 @@ struct PicoSRAM
 #include "cd/LC89510.h"\r
 #include "cd/gfx_cd.h"\r
 \r
+#define PCM_MIXBUF_LEN ((12500000 / 384) / 50 + 1)\r
+\r
 struct mcd_pcm\r
 {\r
        unsigned char control; // reg7\r
        unsigned char enabled; // reg8\r
        unsigned char cur_ch;\r
        unsigned char bank;\r
-       int pad1;\r
+       unsigned int update_cycles;\r
 \r
        struct pcm_chan                 // 08, size 0x10\r
        {\r
@@ -445,6 +447,9 @@ typedef struct
        CDC  cdc;\r
        _scd scd;\r
        Rot_Comp rot_comp;\r
+       int pcm_mixbuf[PCM_MIXBUF_LEN * 2];\r
+       int pcm_mixpos;\r
+       int pcm_mixbuf_dirty;\r
 } mcd_state;\r
 \r
 // XXX: this will need to be reworked for cart+cd support.\r
@@ -656,6 +661,12 @@ void pcd_run_cpus(int m68k_cycles);
 void pcd_soft_reset(void);\r
 void pcd_state_loaded(void);\r
 \r
+// cd/pcm.c\r
+void pcd_pcm_sync(unsigned int to);\r
+void pcd_pcm_update(int *buffer, int length, int stereo);\r
+void pcd_pcm_write(unsigned int a, unsigned int d);\r
+unsigned int pcd_pcm_read(unsigned int a);\r
+\r
 // pico/pico.c\r
 PICO_INTERNAL void PicoInitPico(void);\r
 PICO_INTERNAL void PicoReratePico(void);\r