X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=teensytp%2Fpkts.h;fp=teensytp%2Fpkts.h;h=582fa727ff6eb1eacf4e61fca40fd20f10dc3e5b;hb=37f24627a5efd05d8b52bc3a3e1253d077926c2e;hp=0000000000000000000000000000000000000000;hpb=8d788f3de66aeda55c2518b5e511111face3a82a;p=megadrive.git

diff --git a/teensytp/pkts.h b/teensytp/pkts.h
new file mode 100644
index 0000000..582fa72
--- /dev/null
+++ b/teensytp/pkts.h
@@ -0,0 +1,38 @@
+
+enum tas_pkt_type {
+	PKT_FIXED_STATE       = 0xef01,
+	PKT_STREAM_ENABLE     = 0xef02,
+	PKT_STREAM_REQ        = 0xef03,
+	PKT_STREAM_DATA_TO_P1 = 0xef04,
+	PKT_STREAM_DATA_TO_P2 = 0xef05,
+	PKT_STREAM_DATA_FROM  = 0xef06,
+	PKT_STREAM_END        = 0xef07,
+	PKT_STREAM_ABORT      = 0xef08,
+};
+
+struct tas_pkt {
+	uint16_t type;
+	uint16_t size; // for DATA_FROM/TO
+	union {
+		uint8_t data[60];
+		struct {
+			uint32_t frame; // just fyi
+			uint8_t is_p2;
+		} req;
+		struct {
+			uint8_t stream_to;
+			uint8_t stream_from;
+			// frame increment on read
+			uint8_t inc_mode;
+			uint8_t no_start_seq;
+		} enable;
+	};
+} __attribute__((packed));
+
+enum inc_mode {
+	INC_MODE_VSYNC = 0,
+	// shared stream index incremented by pl1 or pl2
+	INC_MODE_SHARED_PL1 = 1,
+	INC_MODE_SHARED_PL2 = 2,
+	INC_MODE_SEPARATE = 3,
+};