/*
 *   FireWire Backend for Jack
 *   using FFADO
 *   FFADO = Firewire (pro-)audio for linux
 *
 *   http://www.ffado.org
 *   http://www.jackaudio.org
 *
 *   Copyright (C) 2005-2007 Pieter Palmers
 *
 *   This program 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.
 *
 *   This program 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 this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 * Main Jack driver entry routines
 *
 */

#ifndef __JACK_FFADO_DRIVER_H__
#define __JACK_FFADO_DRIVER_H__

#include <assert.h>

#include <libffado/ffado.h>

#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <poll.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <endian.h>

#include <pthread.h>
#include <semaphore.h>

#include <jack/types.h>
#include <jack/ringbuffer.h>
#include <jack/thread.h>

#include "driver.h"
#include "engine.h"
#include "internal.h"

#include "../alsa_midi/midi_pack.h"
#include "../alsa_midi/midi_unpack.h"

// debug print control flags
#define DEBUG_LEVEL_BUFFERS             (1 << 0)
#define DEBUG_LEVEL_HANDLERS                    (1 << 1)
#define DEBUG_LEVEL_XRUN_RECOVERY       (1 << 2)
#define DEBUG_LEVEL_WAIT                        (1 << 3)

#define DEBUG_LEVEL_RUN_CYCLE           (1 << 8)

#define DEBUG_LEVEL_PACKETCOUNTER               (1 << 16)
#define DEBUG_LEVEL_STARTUP                             (1 << 17)
#define DEBUG_LEVEL_THREADS                             (1 << 18)

//#define DEBUG_ENABLED
#ifdef DEBUG_ENABLED

// default debug level
	#define DEBUG_LEVEL (  DEBUG_LEVEL_RUN_CYCLE | \
			       (DEBUG_LEVEL_XRUN_RECOVERY) | DEBUG_LEVEL_STARTUP | DEBUG_LEVEL_WAIT | DEBUG_LEVEL_PACKETCOUNTER)

	#warning Building debug build!

	#define printMessage(format, args ...) jack_error ( "firewire MSG: %s:%d (%s): " format,  __FILE__, __LINE__, __FUNCTION__, ## args )
	#define printError(format, args ...) jack_error ( "firewire ERR: %s:%d (%s): " format,  __FILE__, __LINE__, __FUNCTION__, ## args )

	#define printEnter() jack_error ( "FWDRV ENTERS: %s (%s)\n", __FUNCTION__,  __FILE__)
	#define printExit() jack_error ( "FWDRV EXITS: %s (%s)\n", __FUNCTION__,  __FILE__)
	#define printEnter()
	#define printExit()

	#define debugError(format, args ...) jack_error ( "firewire ERR: %s:%d (%s): " format,  __FILE__, __LINE__, __FUNCTION__, ## args )
	#define debugPrint(Level, format, args ...) if (DEBUG_LEVEL & (Level)) { jack_error ("DEBUG %s:%d (%s) :"  format, __FILE__, __LINE__, __FUNCTION__, ## args ); }
	#define debugPrintShort(Level, format, args ...) if (DEBUG_LEVEL & (Level)) { jack_error ( format, ## args ); }
	#define debugPrintWithTimeStamp(Level, format, args ...) if (DEBUG_LEVEL & (Level)) { jack_error ( "%16lu: "format, debugGetCurrentUTime (), ## args ); }
	#define SEGFAULT int *test = NULL;        *test = 1;
#else
	#define DEBUG_LEVEL

	#define printMessage(format, args ...) if (g_verbose) \
		jack_error ("firewire MSG: " format, ## args )
	#define printError(format, args ...)   jack_error ("firewire ERR: " format, ## args )

	#define printEnter()
	#define printExit()

	#define debugError(format, args ...)
	#define debugPrint(Level, format, args ...)
	#define debugPrintShort(Level, format, args ...)
	#define debugPrintWithTimeStamp(Level, format, args ...)
#endif

typedef struct _ffado_driver ffado_driver_t;

/*
 * Jack Driver command line parameters
 */

typedef struct _ffado_jack_settings ffado_jack_settings_t;
struct _ffado_jack_settings {
	int verbose_level;

	int period_size_set;
	jack_nframes_t period_size;

	int sample_rate_set;
	int sample_rate;

	int buffer_size_set;
	jack_nframes_t buffer_size;

	int playback_ports;
	int capture_ports;

	jack_nframes_t capture_frame_latency;
	jack_nframes_t playback_frame_latency;

	int slave_mode;
	int snoop_mode;

	char *device_info;
};

typedef struct _ffado_capture_channel {
	ffado_streaming_stream_type stream_type;
	midi_unpack_t midi_unpack;
	uint32_t *midi_buffer;
} ffado_capture_channel_t;

#define MIDI_OVERFLOW_BUFFER_SIZE 4
typedef struct _ffado_playback_channel {
	ffado_streaming_stream_type stream_type;
	midi_pack_t midi_pack;
	uint32_t *midi_buffer;
	// to hold the midi bytes that couldn't be transferred
	// during the previous period
	char overflow_buffer[MIDI_OVERFLOW_BUFFER_SIZE];
	unsigned int nb_overflow_bytes;
} ffado_playback_channel_t;

/*
 * JACK driver structure
 */
struct _ffado_driver {
	JACK_DRIVER_NT_DECL;

	jack_nframes_t sample_rate;
	jack_nframes_t period_size;
	unsigned long wait_time;

	jack_time_t wait_last;
	jack_time_t wait_next;
	int wait_late;

	jack_client_t  *client;

	int xrun_detected;
	int xrun_count;

	int process_count;

	/* settings from the command line */
	ffado_jack_settings_t settings;

	/* the firewire virtual device */
	ffado_device_t *dev;

	ffado_sample_t *nullbuffer;
	ffado_sample_t *scratchbuffer;

	JSList                       *capture_ports;
	JSList                       *playback_ports;
	JSList                       *monitor_ports;
	channel_t playback_nchannels;
	channel_t capture_nchannels;

	ffado_playback_channel_t *playback_channels;
	ffado_capture_channel_t  *capture_channels;

	jack_nframes_t playback_frame_latency;
	jack_nframes_t capture_frame_latency;

	ffado_device_info_t device_info;
	ffado_options_t device_options;

};



#endif /* __JACK_FFADO_DRIVER_H__ */