interrupt changes after ffmpeg n0.9

example.diff

-static int decode_interrupt_cb(void)
+static int decode_interrupt_cb(void *ctx)
 {
-    q_pressed += read_key() == 'q';
-    return q_pressed > 1;
+    return received_nb_signals > 1;
 }
 
-static int ffmpeg_exit(int ret)
+static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };

new-style.c

// set callback to AVFormatContext*->interrupt_callback
// callback type=> int (*interrupt_cb)(void*)
// interrupt_callback type=> AVIOInterruptCB
// ex: static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
oc->interrupt_callback = int_cb;

old-style.c

// set global callback (old style)
// callback type=> int (*interrupt_cb)(void)
avio_set_interrupt_cb(decode_interrupt_cb);