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+/*
+ * QEMU Character device internals
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * 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.
+ */
+#ifndef CHARDEV_INTERNAL_H
+#define CHARDEV_INTERNAL_H
+
+#include "chardev/char.h"
+#include "chardev/char-fe.h"
+
+#define MAX_MUX 4
+#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
+#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
+
+typedef struct MuxChardev {
+ Chardev parent;
+ CharBackend *backends[MAX_MUX];
+ CharBackend chr;
+ int focus;
+ int mux_cnt;
+ int term_got_escape;
+ int max_size;
+ /* Intermediate input buffer catches escape sequences even if the
+ currently active device is not accepting any input - but only until it
+ is full as well. */
+ unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
+ int prod[MAX_MUX];
+ int cons[MAX_MUX];
+ int timestamps;
+
+ /* Protected by the Chardev chr_write_lock. */
+ int linestart;
+ int64_t timestamps_start;
+} MuxChardev;
+
+#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
+#define CHARDEV_IS_MUX(chr) \
+ object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
+
+void mux_set_focus(Chardev *chr, int focus);
+void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event);
+
+#endif /* CHAR_MUX_H */