Move mpvcore/input/ to input/

1 files changed, 162 insertions, 0 deletions

diff --git a/input/joystick.c b/input/joystick.c
new file mode 100644
index 0000000000..d8e9d13423
--- /dev/null
+++ b/input/joystick.c
@@ -0,0 +1,162 @@
+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MPlayer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include "joystick.h"
+#include "input.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "mpvcore/mp_msg.h"
+#include "keycodes.h"
+
+#ifndef JOY_AXIS_DELTA
+#define JOY_AXIS_DELTA 500
+#endif
+
+#ifndef JS_DEV
+#define JS_DEV "/dev/input/js0"
+#endif
+
+#include <linux/joystick.h>
+
+int axis[256];
+int btns = 0;
+
+int mp_input_joystick_init(char* dev) {
+  int fd,l=0;
+  int initialized = 0;
+  struct js_event ev;
+
+  mp_msg(MSGT_INPUT,MSGL_V,"Opening joystick device %s\n",dev ? dev : JS_DEV);
+
+  fd = open( dev ? dev : JS_DEV , O_RDONLY | O_NONBLOCK );
+  if(fd < 0) {
+    mp_msg(MSGT_INPUT,MSGL_ERR,"Can't open joystick device %s: %s\n",dev ? dev : JS_DEV,strerror(errno));
+    return -1;
+  }
+
+  while(! initialized) {
+    l = 0;
+    while((unsigned int)l < sizeof(struct js_event)) {
+      int r = read(fd,((char*)&ev)+l,sizeof(struct js_event)-l);
+      if(r < 0) {
+	if(errno == EINTR)
+	  continue;
+	else if(errno == EAGAIN) {
+	  initialized = 1;
+	  break;
+	}
+	mp_msg(MSGT_INPUT,MSGL_ERR,"Error while reading joystick device: %s\n",strerror(errno));
+	close(fd);
+	return -1;
+      }
+      l += r;
+    }
+    if((unsigned int)l < sizeof(struct js_event)) {
+      if(l > 0)
+	mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick: We lose %d bytes of data\n",l);
+      break;
+    }
+    if(ev.type == JS_EVENT_BUTTON)
+      btns |= (ev.value << ev.number);
+    if(ev.type == JS_EVENT_AXIS)
+      axis[ev.number] = ev.value;
+  }
+
+  return fd;
+}
+
+int mp_input_joystick_read(void *ctx, int fd) {
+  struct js_event ev;
+  int l=0;
+
+  while((unsigned int)l < sizeof(struct js_event)) {
+    int r = read(fd,&ev+l,sizeof(struct js_event)-l);
+    if(r <= 0) {
+      if(errno == EINTR)
+	continue;
+      else if(errno == EAGAIN)
+	return MP_INPUT_NOTHING;
+      if( r < 0)
+	mp_msg(MSGT_INPUT,MSGL_ERR,"Error while reading joystick device: %s\n",strerror(errno));
+      else
+	mp_msg(MSGT_INPUT,MSGL_ERR,"Error while reading joystick device: %s\n","EOF");
+      return MP_INPUT_DEAD;
+    }
+    l += r;
+  }
+
+  if((unsigned int)l < sizeof(struct js_event)) {
+    if(l > 0)
+      mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick: We lose %d bytes of data\n",l);
+    return MP_INPUT_NOTHING;
+  }
+
+  if(ev.type & JS_EVENT_INIT) {
+    mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick: warning init event, we have lost sync with driver.\n");
+    ev.type &= ~JS_EVENT_INIT;
+    if(ev.type == JS_EVENT_BUTTON) {
+      int s = (btns >> ev.number) & 1;
+      if(s == ev.value) // State is the same : ignore
+	return MP_INPUT_NOTHING;
+    }
+    if(ev.type == JS_EVENT_AXIS) {
+      if( ( axis[ev.number] == 1 && ev.value > JOY_AXIS_DELTA) ||
+	  (axis[ev.number] == -1 && ev.value < -JOY_AXIS_DELTA) ||
+	  (axis[ev.number] == 0 && ev.value >= -JOY_AXIS_DELTA && ev.value <= JOY_AXIS_DELTA)
+	  ) // State is the same : ignore
+	return MP_INPUT_NOTHING;
+    }
+  }
+
+  if(ev.type & JS_EVENT_BUTTON) {
+    btns &= ~(1 << ev.number);
+    btns |= (ev.value << ev.number);
+    if(ev.value == 1)
+      return (MP_JOY_BTN0 + ev.number) | MP_KEY_STATE_DOWN;
+    else
+      return (MP_JOY_BTN0 + ev.number) | MP_KEY_STATE_UP;
+  } else if(ev.type & JS_EVENT_AXIS) {
+    if(ev.value < -JOY_AXIS_DELTA && axis[ev.number] != -1) {
+      axis[ev.number] = -1;
+      return (MP_JOY_AXIS0_MINUS+(2*ev.number)) | MP_KEY_STATE_DOWN;
+    } else if(ev.value > JOY_AXIS_DELTA && axis[ev.number] != 1) {
+      axis[ev.number] = 1;
+      return (MP_JOY_AXIS0_PLUS+(2*ev.number)) | MP_KEY_STATE_DOWN;
+    } else if(ev.value <= JOY_AXIS_DELTA && ev.value >= -JOY_AXIS_DELTA && axis[ev.number] != 0) {
+      int r = axis[ev.number] == 1 ? MP_JOY_AXIS0_PLUS+(2*ev.number) : MP_JOY_AXIS0_MINUS+(2*ev.number);
+      axis[ev.number] = 0;
+      return r | MP_KEY_STATE_UP;
+    } else
+      return MP_INPUT_NOTHING;
+  } else {
+    mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick warning unknown event type %d\n",ev.type);
+    return MP_INPUT_ERROR;
+  }
+
+  return MP_INPUT_NOTHING;
+}