X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=teensytas.git;a=blobdiff_plain;f=host%2Fmain.c;h=73b8a9f21a1e9cfac750bb43dc55bdfbbae320f7;hp=e5059594d8957ebb26d184111e2e75c530ff2a7b;hb=0172d3f32bb6e69877f66428bdcc02bd9bf62280;hpb=932302efbdad63177565090060be9070aa6faf07

diff --git a/host/main.c b/host/main.c
index e505959..73b8a9f 100644
--- a/host/main.c
+++ b/host/main.c
@@ -1,8 +1,32 @@
+/*
+ * TeensyTAS, TAS input player for MegaDrive
+ * Copyright (c) 2014 notaz
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 #include <stdio.h>
-//#include <stdlib.h>
+#include <stdlib.h>
 #include <string.h>
 #include <stdint.h>
-//#include <pthread.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
@@ -10,41 +34,16 @@
 #include <sys/select.h>
 #include <unistd.h>
 #include <dirent.h>
+#include <signal.h>
+#include <termios.h>
 #include <errno.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/usb/ch9.h>
+#include <linux/input.h>
+#include "../pkts.h"
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
 
-#if 0
-#include "rawhid/hid.h"
-
-static int g_quit;
-
-static void *dbg_reader(void *arg)
-{
-	char buf[65];
-	int ret;
-
-	buf[64] = 0;
-
-	while (!g_quit) {
-		ret = rawhid_recv(0, buf, 64, 1000);
-		if (ret == 0)
-			continue;
-
-		if (ret != 64) {
-			printf("\nrawhid_recv(dbg): %d\n", ret);
-			return NULL;
-		}
-		printf("%s", buf);
-	}
-
-	// rawhid_close(0);
-	return NULL;
-}
-#endif
-
 struct teensy_dev {
   int fd;
   struct {
@@ -262,6 +261,388 @@ out:
   return retval;
 }
 
+static int enable_echo(int enable)
+{
+  const char *portname = "/dev/tty";
+  struct termios tty;
+  int retval = -1;
+  int ret;
+  int fd;
+
+  memset(&tty, 0, sizeof(tty));
+
+  fd = open(portname, O_RDWR | O_NOCTTY | O_SYNC);
+  if (fd < 0) {
+    fprintf(stderr, "open %s: ", portname);
+    perror("");
+    return 1;
+  }
+
+  ret = tcgetattr(fd, &tty);
+  if (ret != 0) {
+    perror("tcgetattr");
+    goto out;
+  }
+
+  // printf("lflag: 0%o\n", tty.c_lflag);
+  if (enable)
+    tty.c_lflag |= ECHO | ICANON;
+  else {
+    tty.c_lflag &= ~(ECHO | ICANON);
+    tty.c_cc[VMIN] = tty.c_cc[VTIME] = 0;
+  }
+
+  ret = tcsetattr(fd, TCSANOW, &tty);
+  if (ret != 0) {
+    perror("tcsetattr");
+    goto out;
+  }
+
+  retval = 0;
+out:
+  close(fd);
+
+  return retval;
+}
+
+static int g_exit;
+
+static void signal_handler(int sig)
+{
+  g_exit = 1;
+  signal(sig, SIG_DFL);
+}
+
+/* ?0SA 00DU, ?1CB RLDU */
+#define STATE_BYTES 2
+
+static uint8_t fixed_input_state[STATE_BYTES] = { 0x33, 0x3f };
+
+enum mdbtn {
+  MDBTN_UP = 1,
+  MDBTN_DOWN,
+  MDBTN_LEFT,
+  MDBTN_RIGHT,
+  MDBTN_A,
+  MDBTN_B,
+  MDBTN_C,
+  MDBTN_START,
+};
+
+static const enum mdbtn evdev_md_map[KEY_CNT] = {
+  [KEY_UP]       = MDBTN_UP,
+  [KEY_DOWN]     = MDBTN_DOWN,
+  [KEY_LEFT]     = MDBTN_LEFT,
+  [KEY_RIGHT]    = MDBTN_RIGHT,
+  [KEY_HOME]     = MDBTN_A,
+  [KEY_PAGEDOWN] = MDBTN_B,
+  [KEY_END]      = MDBTN_C,
+  [KEY_LEFTALT]  = MDBTN_START,
+};
+
+int do_evdev_input(int fd)
+{
+  uint8_t old_state[STATE_BYTES];
+  uint8_t changed_bits[STATE_BYTES] = { 0, };
+  struct input_event ev;
+  enum mdbtn mdbtn;
+  int i, ret;
+
+  ret = read(fd, &ev, sizeof(ev));
+  if (ret != sizeof(ev)) {
+    fprintf(stderr, "evdev read %d/%zd: ", ret, sizeof(ev));
+    perror("");
+    return 0;
+  }
+
+  if (ev.type != EV_KEY)
+    return 0;
+
+  if (ev.value != 0 && ev.value != 1)
+    return 0;
+
+  if ((uint32_t)ev.code >= ARRAY_SIZE(evdev_md_map)) {
+    fprintf(stderr, "evdev read bad key: %u\n", ev.code);
+    return 0;
+  }
+
+  mdbtn = evdev_md_map[ev.code];
+  if (mdbtn == 0)
+    return 0;
+
+  memcpy(old_state, fixed_input_state, STATE_BYTES);
+
+  /* ?0SA 00DU, ?1CB RLDU */
+  switch (mdbtn) {
+  case MDBTN_UP:
+    changed_bits[0] = 0x01;
+    changed_bits[1] = 0x01;
+    break;
+  case MDBTN_DOWN:
+    changed_bits[0] = 0x02;
+    changed_bits[1] = 0x02;
+    break;
+  case MDBTN_LEFT:
+    changed_bits[0] = 0x00;
+    changed_bits[1] = 0x04;
+    break;
+  case MDBTN_RIGHT:
+    changed_bits[0] = 0x00;
+    changed_bits[1] = 0x08;
+    break;
+  case MDBTN_A:
+    changed_bits[0] = 0x10;
+    changed_bits[1] = 0x00;
+    break;
+  case MDBTN_B:
+    changed_bits[0] = 0x00;
+    changed_bits[1] = 0x10;
+    break;
+  case MDBTN_C:
+    changed_bits[0] = 0x00;
+    changed_bits[1] = 0x20;
+    break;
+  case MDBTN_START:
+    changed_bits[0] = 0x20;
+    changed_bits[1] = 0x00;
+    break;
+  }
+
+  if (ev.value) {
+    // key press
+    for (i = 0; i < STATE_BYTES; i++)
+      fixed_input_state[i] &= ~changed_bits[i];
+  }
+  else {
+    // key release
+    for (i = 0; i < STATE_BYTES; i++)
+      fixed_input_state[i] |=  changed_bits[i];
+  }
+
+  return memcmp(old_state, fixed_input_state, STATE_BYTES) ? 1 : 0;
+}
+
+struct gmv_tas {
+  char sig[15];
+  char ver;
+  uint32_t rerecord_count;
+  char ctrl1;
+  char ctrl2;
+  uint16_t flags;
+  char name[40];
+  uint8_t data[0][3];
+};
+
+static uint8_t *import_gmv(FILE *f, long size, int *frame_count)
+{
+  struct gmv_tas *gmv;
+  uint8_t *out;
+  int ret;
+  int i;
+
+  if (size < (long)sizeof(*gmv)) {
+    fprintf(stderr, "bad gmv size: %ld\n", size);
+    return NULL;
+  }
+
+  gmv = malloc(size);
+  if (gmv == NULL) {
+    fprintf(stderr, "OOM?\n");
+    return NULL;
+  }
+  ret = fread(gmv, 1, size, f);
+  if (ret != size) {
+    fprintf(stderr, "fread %d/%ld: ", ret, size);
+    perror("");
+    return NULL;
+  }
+
+  *frame_count = (size - sizeof(*gmv)) / sizeof(gmv->data[0]);
+
+  /* check the GMV.. */
+  if (*frame_count <= 0 || size != sizeof(*gmv) + *frame_count * 3) {
+    fprintf(stderr, "broken gmv? frames=%d\n", *frame_count);
+    return NULL;
+  }
+
+  if (strncmp(gmv->sig, "Gens Movie TEST", 15) != 0) {
+    fprintf(stderr, "bad GMV sig\n");
+    return NULL;
+  }
+  if (gmv->ctrl1 != '3') {
+    fprintf(stderr, "unhandled controlled config: '%c'\n", gmv->ctrl1);
+    //return NULL;
+  }
+  if (gmv->ver >= 'A') {
+    if (gmv->flags & 0x40) {
+      fprintf(stderr, "unhandled flag: movie requires a savestate\n");
+      return NULL;
+    }
+    if (gmv->flags & 0x20) {
+      fprintf(stderr, "unhandled flag: 3-player movie\n");
+      return NULL;
+    }
+    if (gmv->flags & ~0x80) {
+      //fprintf(stderr, "unhandled flag(s): %04x\n", gmv->flags);
+      //return 1;
+    }
+  }
+  gmv->name[39] = 0;
+  printf("loaded GMV: %s\n", gmv->name);
+  printf("%d frames, %u rerecords\n",
+         *frame_count, gmv->rerecord_count);
+
+  out = malloc(*frame_count * sizeof(out[0]));
+  if (out == NULL) {
+    fprintf(stderr, "OOM?\n");
+    return NULL;
+  }
+
+  for (i = 0; i < *frame_count; i++) {
+    out[i] = gmv->data[i][0];
+
+    if (gmv->data[i][1] != 0xff || gmv->data[i][2] != 0xff)
+    {
+      fprintf(stderr, "f %d: unhandled byte(s) %02x %02x\n",
+        i, gmv->data[i][1], gmv->data[i][2]);
+    }
+  }
+
+  return out;
+}
+
+static int do_bkm_char(char c, char expect, uint8_t *val, int bit)
+{
+  if (c == expect) {
+    *val &= ~(1 << bit);
+    return 0;
+  }
+  if (c == '.')
+    return 0;
+
+  fprintf(stderr, "unexpected bkm char: '%c' instead of '%c'\n",
+          c, expect);
+  return 1;
+}
+
+static uint8_t *import_bkm(FILE *f, int *frame_count)
+{
+  uint8_t *out = NULL, val;
+  int count = 0;
+  int alloc = 0;
+  int line = 0;
+  char buf[256];
+  const char *r;
+  char *p;
+  int i;
+
+  while ((p = fgets(buf, sizeof(buf), f)) != NULL) {
+    line++;
+    if (p[0] != '|')
+      continue;
+
+    if (strlen(p) < 30)
+      goto unhandled_line;
+    if (p[30] != '\r' && p[30] != '\n')
+      goto unhandled_line;
+    p[30] = 0;
+
+    if (count >= alloc) {
+      alloc = alloc * 2 + 64;
+      out = realloc(out, alloc * sizeof(out[0]));
+      if (out == NULL) {
+        fprintf(stderr, "OOM?\n");
+        return NULL;
+      }
+    }
+
+    val = 0xff;
+
+    if (strncmp(p, "|.|", 3) != 0)
+      goto unhandled_line;
+    p += 3;
+
+    const char ref[] = "UDLRABCS";
+    for (r = ref, i = 0; *r != 0; p++, r++, i++) {
+      if (do_bkm_char(*p, *r, &val, i))
+        goto unhandled_line;
+    }
+
+    if (strcmp(p, "....|............||") != 0)
+      goto unhandled_line;
+
+    out[count++] = val;
+    continue;
+
+unhandled_line:
+    fprintf(stderr, "unhandled bkm line %d: '%s'\n", line, buf);
+    return NULL;
+  }
+
+  printf("loaded bkm, %d frames\n", count);
+  *frame_count = count;
+  return out;
+}
+
+static int write_bkm_frame(FILE *f, const uint8_t *data)
+{
+  /* ?0SA 00DU, ?1CB RLDU */
+  static const char ref[]  = "UDLRABCSXYZM";
+  static const char bits[] = { 0,1,2,3, 12,4,5,13, 16,16,16,16 };
+  uint32_t idata[2];
+  int p, i;
+
+  if (f == NULL) {
+    fprintf(stderr, "%s called without outfile\n", __func__);
+    goto out;
+  }
+
+  idata[0] = 0x10000 | (data[0] << 8) | data[1];
+  idata[1] = ~0;
+
+  fprintf(f, "|.|");
+  for (p = 0; p < 2; p++) {
+    for (i = 0; i < 12; i++)
+      fprintf(f, "%c", (idata[p] & (1 << bits[i])) ? '.' : ref[i]);
+    fprintf(f, "|");
+  }
+  fprintf(f, "|\n");
+
+out:
+  return 2;
+}
+
+static int tas_data_to_teensy(uint8_t b, uint8_t *data, FILE *logf)
+{
+  uint8_t t;
+
+  /* SCBA RLDU */
+  /*     v     */
+  /* ?0SA 00DU, ?1CB RLDU */
+  data[0] = (b & 0x13) | ((b >> 2) & 0x20);
+  data[1] = (b & 0x0f) | ((b >> 1) & 0x30);
+
+  if (logf != NULL) {
+    fwrite(&data[0], 1, 1, logf);
+    t = data[1] | 0x40; // expected TH
+    fwrite(&t, 1, 1, logf);
+  }
+
+  return 2;
+}
+
+static int submit_urb(int fd, struct usbdevfs_urb *urb, int ep,
+  void *buf, size_t buf_size)
+{
+  memset(urb, 0, sizeof(*urb));
+  urb->type = USBDEVFS_URB_TYPE_INTERRUPT;
+  urb->endpoint = ep;
+  urb->buffer = buf;
+  urb->buffer_length = buf_size;
+
+  return ioctl(fd, USBDEVFS_SUBMITURB, urb);
+}
+
 enum my_urbs {
   URB_DATA_IN,
   URB_DATA_OUT,
@@ -269,26 +650,203 @@ enum my_urbs {
   URB_CNT
 };
 
+static void missing_arg(int a)
+{
+  fprintf(stderr, "missing arg: %d\n", a);
+  exit(1);
+}
+
 int main(int argc, char *argv[])
 {
   struct teensy_dev dev;
   struct usbdevfs_urb urb[URB_CNT];
   struct usbdevfs_urb *reaped_urb;
-  char buf_dbg[64 + 1], buf_in[64];
+  int fixed_input_changed = 0;
+  int evdev_fds[16];
+  int evdev_fd_cnt = 0;
+  int evdev_support;
   int wait_device = 0;
-  int dbg_in_sent = 0;
-  int data_in_sent = 0;
-  fd_set wfds;
-  int ret;
+  int pending_urbs = 0;
+  fd_set rfds, wfds;
+  const char *tasfn = NULL;
+  const char *outfn = NULL;
+  const char *logfn = NULL;
+  uint8_t *tas_data = NULL;
+  int use_vsync = 0; // frame increment on vsync
+  int no_start_seq = 0;
+  int tas_skip = 0;
+  int enable_sent = 0;
+  int abort_sent = 0;
+  int frame_count = 0;
+  int frames_sent = 0;
+  char buf_dbg[64 + 1];
+  struct tas_pkt pkt_in;
+  struct tas_pkt pkt_out;
+  struct timeval *timeout = NULL;
+  struct timeval tout;
+  FILE *outf = NULL;
+  FILE *logf = NULL;
+  int i, ret = -1;
+  int fd;
+
+  for (i = 1; i < argc; i++) {
+    if (argv[i][0] == '-') {
+      switch (argv[i][1] | (argv[i][2] << 8)) {
+      case 'm':
+        i++;
+        if (argv[i] == NULL)
+          missing_arg(i);
+        tasfn = argv[i];
+        continue;
+      case 'w':
+        i++;
+        if (argv[i] == NULL)
+          missing_arg(i);
+        outfn = argv[i];
+        continue;
+      case 'l':
+        i++;
+        if (argv[i] == NULL)
+          missing_arg(i);
+        logfn = argv[i];
+        continue;
+      case 's':
+        i++;
+        if (argv[i] == NULL)
+          missing_arg(i);
+        tas_skip = atoi(argv[i]);
+        continue;
+      case 'v':
+        use_vsync = 1;
+        continue;
+      case 'n':
+        no_start_seq = 1;
+        continue;
+      default:
+        fprintf(stderr, "bad arg: %s\n", argv[i]);
+        return 1;
+      }
+    }
+
+    /* remaining args are evdev filenames */
+    if (evdev_fd_cnt >= ARRAY_SIZE(evdev_fds)) {
+      fprintf(stderr, "too many evdevs\n");
+      break;
+    }
+    fd = open(argv[i], O_RDONLY);
+    if (fd == -1) {
+      fprintf(stderr, "open %s: ", argv[i]);
+      perror("");
+      continue;
+    }
+    evdev_support = 0;
+    ret = ioctl(fd, EVIOCGBIT(0, sizeof(evdev_support)),
+                &evdev_support);
+    if (ret < 0)
+      perror("EVIOCGBIT");
+    if (!(evdev_support & (1 << EV_KEY))) {
+      fprintf(stderr, "%s doesn't have keys\n", argv[i]);
+      close(fd);
+      continue;
+    }
+    evdev_fds[evdev_fd_cnt++] = fd;
+  }
+
+  if (tasfn != NULL) {
+    const char *ext;
+    long size;
+    FILE *f;
+
+    f = fopen(tasfn, "rb");
+    if (f == NULL) {
+      fprintf(stderr, "fopen %s: ", tasfn);
+      perror("");
+      return 1;
+    }
+
+    fseek(f, 0, SEEK_END);
+    size = ftell(f);
+    fseek(f, 0, SEEK_SET);
+    if (size <= 0) {
+      fprintf(stderr, "bad size: %ld\n", size);
+      return 1;
+    }
+
+    ext = strrchr(tasfn, '.');
+    if (ext == NULL)
+      ext = tasfn;
+    else
+      ext++;
+
+    if (strcasecmp(ext, "gmv") == 0)
+      tas_data = import_gmv(f, size, &frame_count);
+    else if (strcasecmp(ext, "bkm") == 0)
+      tas_data = import_bkm(f, &frame_count);
+    else {
+      fprintf(stderr, "unknown movie type: '%s'\n", ext);
+      return 1;
+    }
+    fclose(f);
+
+    if (tas_data == NULL) {
+      fprintf(stderr, "failed fo parse %s\n", tasfn);
+      return 1;
+    }
+
+    if (tas_skip != 0) {
+      if (tas_skip >= frame_count || tas_skip <= -frame_count) {
+        printf("skip out of range: %d/%d\n", tas_skip, frame_count);
+        return 1;
+      }
+      if (tas_skip > 0) {
+        frame_count -= tas_skip;
+        memmove(&tas_data[0], &tas_data[tas_skip],
+          sizeof(tas_data[0]) * frame_count);
+      }
+      else {
+        tas_data = realloc(tas_data,
+                     (frame_count - tas_skip) * sizeof(tas_data[0]));
+        if (tas_data == NULL) {
+          fprintf(stderr, "OOM?\n");
+          return 1;
+        }
+        memmove(&tas_data[-tas_skip], &tas_data[0],
+          sizeof(tas_data[0]) * frame_count);
+        memset(&tas_data[0], 0xff, sizeof(tas_data[0]) * -tas_skip);
+        frame_count -= tas_skip;
+      }
+    }
+  }
+
+  if (outfn != NULL) {
+    outf = fopen(outfn, "w");
+    if (outf == NULL) {
+      fprintf(stderr, "fopen %s: ", outfn);
+      perror("");
+      return 1;
+    }
+  }
+
+  if (logfn != NULL) {
+    logf = fopen(logfn, "wb");
+    if (logf == NULL) {
+      fprintf(stderr, "fopen %s: ", logfn);
+      perror("");
+      return 1;
+    }
+  }
+
+  enable_echo(0);
+  signal(SIGINT, signal_handler);
 
   dev.fd = -1;
 
-  while (1)
+  while (!g_exit || (pending_urbs & (1 << URB_DATA_OUT)))
   {
     if (dev.fd == -1) {
       ret = find_device(&dev, 0x16C0, 0x0486);
       if (ret < 0)
-        return ret;
+        break;
 
       if (ret == 0) {
         if (!wait_device) {
@@ -300,141 +858,269 @@ int main(int argc, char *argv[])
       }
 
       wait_device = 0;
-      data_in_sent = 0;
-      dbg_in_sent = 0;
+      pending_urbs = 0;
+      enable_sent = 0;
+      frames_sent = 0;
+
+      /* we wait first, then send commands, but if teensy
+       * is started already, it won't send anything */
+      tout.tv_sec = 1;
+      tout.tv_usec = 0;
+      timeout = &tout;
     }
 
-    if (!data_in_sent) {
-      memset(&urb[URB_DATA_IN], 0, sizeof(urb[URB_DATA_IN]));
-      urb[URB_DATA_IN].type = USBDEVFS_URB_TYPE_INTERRUPT;
-      urb[URB_DATA_IN].endpoint = dev.ifaces[0].ep_in;
-      urb[URB_DATA_IN].buffer = buf_in;
-      urb[URB_DATA_IN].buffer_length = sizeof(buf_in);
-
-      ret = ioctl(dev.fd, USBDEVFS_SUBMITURB, &urb[URB_DATA_IN]);
+    if (!(pending_urbs & (1 << URB_DATA_IN))) {
+      memset(&pkt_in, 0, sizeof(pkt_in));
+      ret = submit_urb(dev.fd, &urb[URB_DATA_IN], dev.ifaces[0].ep_in,
+                       &pkt_in, sizeof(pkt_in));
       if (ret != 0) {
         perror("USBDEVFS_SUBMITURB URB_DATA_IN");
-        return 1;
+        break;
       }
-      data_in_sent = 1;
-    }
-    if (!dbg_in_sent) {
-      memset(&urb[URB_DBG_IN], 0, sizeof(urb[URB_DBG_IN]));
-      urb[URB_DBG_IN].type = USBDEVFS_URB_TYPE_INTERRUPT;
-      urb[URB_DBG_IN].endpoint = dev.ifaces[1].ep_in;
-      urb[URB_DBG_IN].buffer = buf_dbg;
-      urb[URB_DBG_IN].buffer_length = sizeof(buf_dbg) - 1;
 
-      ret = ioctl(dev.fd, USBDEVFS_SUBMITURB, &urb[URB_DBG_IN]);
+      pending_urbs |= 1 << URB_DATA_IN;
+    }
+    if (!(pending_urbs & (1 << URB_DBG_IN))) {
+      ret = submit_urb(dev.fd, &urb[URB_DBG_IN], dev.ifaces[1].ep_in,
+                       buf_dbg, sizeof(buf_dbg) - 1);
       if (ret != 0) {
         perror("USBDEVFS_SUBMITURB URB_DBG_IN");
-        return 1;
+        break;
       }
-      dbg_in_sent = 1;
+
+      pending_urbs |= 1 << URB_DBG_IN;
     }
 
+    FD_ZERO(&rfds);
+    FD_SET(STDIN_FILENO, &rfds);
+    for (i = 0; i < evdev_fd_cnt; i++)
+      FD_SET(evdev_fds[i], &rfds);
+
     FD_ZERO(&wfds);
     FD_SET(dev.fd, &wfds);
 
-    ret = select(dev.fd + 1, NULL, &wfds, NULL, NULL);
+    ret = select(dev.fd + 1, &rfds, &wfds, NULL, timeout);
     if (ret < 0) {
       perror("select");
-      return 1;
+      break;
+    }
+    timeout = NULL;
+
+    /* sometihng form stdin? */
+    if (FD_ISSET(STDIN_FILENO, &rfds)) {
+      char c = 0;
+      ret = read(STDIN_FILENO, &c, 1);
+      if (ret <= 0) {
+        perror("read stdin");
+        break;
+      }
+
+      switch (c) {
+      case 'r':
+        enable_sent = 0;
+        if (logf != NULL)
+          rewind(logf);
+        break;
+      }
+    }
+
+    /* something from input devices? */
+    for (i = 0; i < evdev_fd_cnt; i++) {
+      if (FD_ISSET(evdev_fds[i], &rfds)) {
+        fixed_input_changed |=
+          do_evdev_input(evdev_fds[i]);
+      }
     }
 
-    if (FD_ISSET(dev.fd, &wfds)) {
+    /* something from USB? */
+    if (FD_ISSET(dev.fd, &wfds))
+    {
+      unsigned int which_urb;
+
       reaped_urb = NULL;
       ret = ioctl(dev.fd, USBDEVFS_REAPURB, &reaped_urb);
       if (ret != 0) {
         if (errno == ENODEV)
           goto dev_close;
         perror("USBDEVFS_REAPURB");
-        return 1;
+        break;
+      }
+      which_urb = reaped_urb - urb;
+      if (which_urb < ARRAY_SIZE(urb))
+        pending_urbs &= ~(1 << which_urb);
+      else {
+        fprintf(stderr, "reaped unknown urb: %p #%u",
+                reaped_urb, which_urb);
       }
 
       if (reaped_urb != NULL && reaped_urb->status != 0) {
         errno = -reaped_urb->status;
-        perror("urb status");
+        fprintf(stderr, "urb #%u: ", which_urb);
+        perror("");
         if (reaped_urb->status == -EILSEQ) {
           /* this is usually a sign of disconnect.. */
           usleep(250000);
           goto dev_close;
         }
       }
-
-      if (reaped_urb == &urb[URB_DATA_IN]) {
-        printf("*data*\n");
-        data_in_sent = 0;
+      else if (reaped_urb == &urb[URB_DATA_IN])
+      {
+        /* some request from teensy */
+        switch (pkt_in.type) {
+        case PKT_STREAM_REQ:
+          printf("req: %d/%d/%d\n", pkt_in.req.frame,
+            frames_sent, frame_count);
+
+          pkt_out.size = 0;
+          if (frames_sent < frame_count) {
+            pkt_out.type = PKT_STREAM_DATA_TO;
+
+            for (i = 0; i < sizeof(pkt_out.data); ) {
+              i += tas_data_to_teensy(tas_data[frames_sent],
+                     pkt_out.data + i, logf);
+
+              frames_sent++;
+              if (frames_sent >= frame_count)
+                break;
+            }
+            pkt_out.size = i;
+          }
+          else {
+            pkt_out.type = PKT_STREAM_END;
+            if (logf != NULL)
+              fflush(logf);
+          }
+
+          ret = submit_urb(dev.fd, &urb[URB_DATA_OUT],
+                  dev.ifaces[0].ep_out, &pkt_out, sizeof(pkt_out));
+          if (ret != 0)
+            perror("USBDEVFS_SUBMITURB PKT_STREAM_DATA_TO");
+          break;
+
+        case PKT_STREAM_DATA_FROM:
+          printf("f: %d\n", frame_count);
+          if (pkt_in.size == 0 || pkt_in.size > sizeof(pkt_out.data)) {
+            printf("host: got bad DATA_FROM size: %u\n", pkt_in.size);
+            break;
+          }
+          for (i = 0; i < pkt_in.size; ) {
+            i += write_bkm_frame(outf, pkt_in.data + i);
+            frame_count++;
+          }
+          break;
+
+        default:
+          printf("host: got unknown pkt type: %04x\n", pkt_in.type);
+          break;
+        }
       }
-      else if (reaped_urb == &urb[URB_DBG_IN]) {
+      else if (reaped_urb == &urb[URB_DATA_OUT])
+      {
+      }
+      else if (reaped_urb == &urb[URB_DBG_IN])
+      {
         /* debug text */
         buf_dbg[reaped_urb->actual_length] = 0;
         printf("%s", buf_dbg);
-        dbg_in_sent = 0;
+
+        // continue receiving debug before sending out stuff
+        tout.tv_sec = 0;
+        tout.tv_usec = 1000;
+        timeout = &tout;
+        continue;
       }
       else {
-        fprintf(stderr, "reaped unknown urb? %p\n", reaped_urb);
+        fprintf(stderr, "reaped unknown urb? %p #%zu\n",
+          reaped_urb, reaped_urb - urb);
       }
     }
-    continue;
 
-dev_close:
-    close(dev.fd);
-    dev.fd = -1;
-  }
+    /* something to send? */
+    if (pending_urbs & (1 << URB_DATA_OUT))
+      // can't do that yet
+      continue;
 
-#if 0
-  ret = rawhid_open(1, 0x16C0, 0x0486, 0xFFC9, 0x0004);
-  if (ret <= 0) {
-    fprintf(stderr, "dbg rawhid is missing\n");
-    return 1;
-  }
+    if ((tas_data != NULL || outf != NULL) && !enable_sent) {
+      memset(&pkt_out, 0, sizeof(pkt_out));
+      pkt_out.type = PKT_STREAM_ENABLE;
+      pkt_out.enable.stream_to = (tas_data != NULL);
+      pkt_out.enable.stream_from = (outf != NULL);
+      pkt_out.enable.use_readinc = !use_vsync;
+      pkt_out.enable.no_start_seq = no_start_seq;
 
-  ret = rawhid_open(1, 0x16C0, 0x0486, 0xFFAB, 0x0200);
-  if (ret <= 0) {
-    fprintf(stderr, "data rawhid is missing\n");
-    return 1;
-  }
+      ret = submit_urb(dev.fd, &urb[URB_DATA_OUT], dev.ifaces[0].ep_out,
+                       &pkt_out, sizeof(pkt_out));
+      if (ret != 0) {
+        perror("USBDEVFS_SUBMITURB PKT_STREAM_ENABLE");
+        continue;
+      }
+      pending_urbs |= 1 << URB_DATA_OUT;
+      enable_sent = 1;
+      frames_sent = 0;
+      continue;
+    }
+    if (tas_data == NULL && fixed_input_changed) {
+      memset(&pkt_out, 0, sizeof(pkt_out));
+      pkt_out.type = PKT_FIXED_STATE;
+      memcpy(pkt_out.data, fixed_input_state, sizeof(fixed_input_state));
 
-  pthread_t thread;
-  ret = pthread_create(&thread, NULL, dbg_reader, NULL);
-  if (ret) {
-    fprintf(stderr, "pthread_create failed: %d\n", ret);
-    return 1;
-  }
+      ret = submit_urb(dev.fd, &urb[URB_DATA_OUT], dev.ifaces[0].ep_out,
+                       &pkt_out, sizeof(pkt_out));
+      if (ret != 0) {
+        perror("USBDEVFS_SUBMITURB PKT_FIXED_STATE");
+        break;
+      }
+      fixed_input_changed = 0;
+      pending_urbs |= 1 << URB_DATA_OUT;
+      continue;
+    }
+    if (g_exit && !abort_sent) {
+      memset(&pkt_out, 0, sizeof(pkt_out));
+      pkt_out.type = PKT_STREAM_ABORT;
+
+      ret = submit_urb(dev.fd, &urb[URB_DATA_OUT], dev.ifaces[0].ep_out,
+                       &pkt_out, sizeof(pkt_out));
+      if (ret != 0) {
+        perror("USBDEVFS_SUBMITURB PKT_STREAM_ABORT");
+        break;
+      }
+      pending_urbs |= 1 << URB_DATA_OUT;
+      abort_sent = 1;
+      continue;
+    }
 
-  memset(buf, 0, sizeof(buf));
-  snprintf(buf, sizeof(buf), "hi");
+    continue;
 
-  ret = rawhid_send(1, buf, 64, 220);
-  if (ret != 64) {
-    fprintf(stderr, "send failed: %d\n", ret);
+dev_close:
+    close(dev.fd);
+    dev.fd = -1;
   }
 
-  while (1) {
-    // check if any Raw HID packet has arrived
-    ret = rawhid_recv(1, buf, 64, 220);
-    if (ret < 0) {
-      fprintf(stderr, "\nrawhid_recv(1): %d\n", ret);
-      break;
-    }
-    if (ret > 0) {
-      printf("\nrecv %d bytes:\n", ret);
-      for (i=0; i<ret; i++) {
-        printf("%02X ", buf[i] & 255);
-        if (i % 16 == 15 && i < ret-1) printf("\n");
+  enable_echo(1);
+
+  if (outf != NULL)
+    fclose(outf);
+  if (logf != NULL)
+    fclose(logf);
+
+  if (dev.fd != -1) {
+    /* deal with pending URBs */
+    if (pending_urbs & (1 << URB_DATA_IN))
+      ioctl(dev.fd, USBDEVFS_DISCARDURB, &urb[URB_DATA_IN]);
+    if (pending_urbs & (1 << URB_DBG_IN))
+      ioctl(dev.fd, USBDEVFS_DISCARDURB, &urb[URB_DBG_IN]);
+    for (i = 0; i < URB_CNT; i++) {
+      if (pending_urbs & (1 << i)) {
+        ret = ioctl(dev.fd, USBDEVFS_REAPURB, &reaped_urb);
+        if (ret != 0)
+          perror("USBDEVFS_REAPURB");
       }
-      printf("\n");
     }
-  }
-
-  // rawhid_close(1);
 
-  g_quit = 1;
-  pthread_join(thread, NULL);
-#endif
+    close(dev.fd);
+  }
 
-  return 0;
+  return ret;
 }
 
 // vim: ts=2:sw=2:expandtab