teensytp/pkts.h

   1
   2 enum tas_pkt_type {
   3         PKT_FIXED_STATE       = 0xef01,
   4         PKT_STREAM_ENABLE     = 0xef02,
   5         PKT_STREAM_REQ        = 0xef03,
   6         PKT_STREAM_DATA_TO_P1 = 0xef04,
   7         PKT_STREAM_DATA_TO_P2 = 0xef05,
   8         PKT_STREAM_DATA_FROM  = 0xef06,
   9         PKT_STREAM_END        = 0xef07,
  10         PKT_STREAM_ABORT      = 0xef08,
  11 };
  12
  13 struct tas_pkt {
  14         uint16_t type;
  15         uint16_t size; // for DATA_FROM/TO
  16         union {
  17                 uint8_t data[60];
  18                 struct {
  19                         uint32_t frame; // just fyi
  20                         uint8_t is_p2;
  21                 } req;
  22                 struct {
  23                         uint8_t stream_to;
  24                         uint8_t stream_from;
  25                         // frame increment on read
  26                         uint8_t inc_mode;
  27                         uint8_t no_start_seq;
  28                 } enable;
  29         };
  30 } __attribute__((packed));
  31
  32 enum inc_mode {
  33         INC_MODE_VSYNC = 0,
  34         // shared stream index incremented by pl1 or pl2
  35         INC_MODE_SHARED_PL1 = 1,
  36         INC_MODE_SHARED_PL2 = 2,
  37         INC_MODE_SEPARATE = 3,
  38 };