/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2006, Digium, Inc.
 *
 * Mark Spencer <markster@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 * \brief General Asterisk PBX capability definitions.
 * \par See also:
 *  \arg \ref Def_Channel
 *  \arg \ref channel_drivers
 */

#ifndef _ASTERISK_CAPABILITY_H
#define _ASTERISK_CAPABILITY_H

#include "asterisk/abstract_jb.h"

#include <unistd.h>
#ifdef POLLCOMPAT 
#include "asterisk/poll-compat.h"
#else
#include <sys/poll.h>
#endif

#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

#include "asterisk/compat.h"
#include "asterisk/frame.h"
#include "asterisk/config.h"
#include "asterisk/utils.h"
#include "asterisk/compiler.h"

/* Defines */
#define AST_VIDEO_SQCIF 	(0)
#define AST_VIDEO_QSIF 		(1)
#define AST_VIDEO_QCIF 		(2)
#define AST_VIDEO_QVGA 		(3)
#define AST_VIDEO_SIF 		(4)
#define AST_VIDEO_CIF 		(5)
#define AST_VIDEO_VGA 		(6)
#define AST_VIDEO_CIF4 		(7)
#define AST_VIDEO_SVGA 		(8)
#define AST_VIDEO_XGA 		(9)
#define AST_VIDEO_CIF16 	(10)

#define AST_VIDEO_LEVEL_BASELINE (1 << 0)
#define AST_VIDEO_LEVEL_MAIN     (1 << 1)
#define AST_VIDEO_LEVEL_EXTENDED (1 << 2)

#define MAX_VIDEO_SIZES 11

#define DEFAULT_MAX_CALL_BITRATE (384000)		/*!< Max bitrate for video */

// The profile level is the profile (eg 1.1 x 10)
typedef enum
{
  level_1   = 10, // 0x0A
  level_1_1 = 11, // 0x0B
  level_1_2 = 12, // 0x0C
  level_1_3 = 13, // 0x0D
  level_2   = 20, // 0x14
  level_2_1 = 21, // 0x15
  level_2_2 = 22, // 0x16
  level_3   = 30, // 0x1E
  level_3_1 = 31, // 0x1F
  level_3_2 = 32, // 0x20
  level_4   = 40, // 0x28
  level_4_1 = 41, // 0x29
  level_4_2 = 42, // 0x2A
  level_5   = 50, // 0x32
  level_5_1 = 51, // 0x33
} ast_h264_profile_level;

/* The following array defines the video sizes we know about */
struct videoSize{
	char*        type;
	unsigned int num_mbs;
	unsigned int maxframerate;
}; 

extern struct videoSize videoSizes[];
extern struct ast_capabilities ast_default_caps;

/*! \brief ast_video_cap: Struct holding video capabilities */
struct ast_h2613_video_cap {
	int          valid;														/*!< 1 = This codec is specified, 0 = not specified */
	unsigned int annexes;													/*!< Video annexes - stored as bitfield 2^(annex-ascii(A))*/
	unsigned int maxfr[MAX_VIDEO_SIZES];	/*!< Maximum framerate (framerate = 30/mpi)  */
	unsigned int maxbr;														/*!< Maximum supported bitrate for this capability */
};

/*! \brief ast_h264_video_cap: Struct holding video capabilities */
struct ast_h264_video_cap {
	unsigned char valid;       /*!< 1 = This codec is specified, 0 = not specified */
	unsigned char rtpnum;      /*!< The rtp number used in this cap */
	unsigned char profile;     /*!< Video flags */
	unsigned char level;       /*!< Profile level */
	unsigned char constraint;	 /*!< Constraint flags */
	unsigned int  maxmbps;     /*!< Maximum number of macroblocks per second */
	unsigned int  packet_mode; /*!< Packetisation mode */
	unsigned int  maxbr;       /*!< Maximum supported bitrate for this capability */
};

/*! \brief ast_video_capabilities: Struct holding all video capabilities */
struct ast_capabilities {
	unsigned int               maxcallbitrate;  /*!< Max allowed bitrate for this channel */
	unsigned int               maxvideobitrate; /*!< Max video bitrate */
	unsigned char							 prefs[32];       /*!< List of preferences */
	struct ast_h2613_video_cap h261;            /*!< H261 video capabilities */
	struct ast_h2613_video_cap h263;            /*!< H263 video capabilities */
	struct ast_h264_video_cap  h264;            /*!< H264 video capabilities */
};

/*! \brief Set video capabilities of a channel
 * \note When videp caps need to be relayed to another part of call
 * \param chan channel to change the indication
 * \param capabilities
 * \return Returns 0 on success, -1 on failure
 */
int ast_set_capabilities(struct ast_channel *chan, struct ast_capabilities *chancaps);
struct ast_capabilities *ast_alloc_capabilities(void);
void ast_dump_caps(struct ast_capabilities *caps);
void ast_dump_h2613_video_cap(struct ast_h2613_video_cap *vidcap);
void ast_dump_h264_video_cap(struct ast_h264_video_cap *vidcap);
void ast_resolve_h2613_video_cap(struct ast_h2613_video_cap *dstcap, struct ast_h2613_video_cap *s1cap, struct ast_h2613_video_cap *s2cap);
void ast_resolve_h264_video_cap(struct ast_h264_video_cap *dstcap, struct ast_h264_video_cap *s1cap, struct ast_h264_video_cap *s2cap);
int ast_copy_capabilities(struct ast_capabilities *dstcap, struct ast_capabilities *srccap);
int ast_resolve_capabilities(struct ast_capabilities *dst, struct ast_capabilities *s1caps, struct ast_capabilities *s2caps, int debug);
int ast_are_caps_zero(struct ast_capabilities *caps);
int ast_set_capabilities_from_int(struct ast_capabilities *caps, int simplecap);
int check_set_video_bitrates(struct ast_capabilities *caps, int debug);
int parse_h2613_conf_line(const char *fmtstr, struct ast_h2613_video_cap *vidcap, unsigned int framerate);
int parse_h264_conf_line(const char *fmtstr, struct ast_h264_video_cap *vidcap, int framerate);

#if defined(__cplusplus) || defined(c_plusplus)
}
#endif


#endif /* _ASTERISK_CAPABILITY_H */