video.h

关于dvb的应用程序代码

/* 
 * video.h
 *
 * Copyright (C) 2000 Marcus Metzler <[e-mail]>
 *                  & Ralph  Metzler <[e-mail]>
                      for convergence integrated media GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * 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 Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef _DVBVIDEO_H_
#define _DVBVIDEO_H_

#ifdef __KERNEL__
#include <linux/types.h>
#else
#include <stdint.h>
#include <time.h>
#endif


typedef enum {
	VIDEO_FORMAT_4_3,     /* Select 4:3 format */
        VIDEO_FORMAT_16_9,    /* Select 16:9 format. */
	VIDEO_FORMAT_221_1    /* 2.21:1 */
} video_format_t;


typedef enum {
	 VIDEO_SYSTEM_PAL, 
	 VIDEO_SYSTEM_NTSC, 
	 VIDEO_SYSTEM_PALN, 
	 VIDEO_SYSTEM_PALNc, 
	 VIDEO_SYSTEM_PALM, 
	 VIDEO_SYSTEM_NTSC60, 
	 VIDEO_SYSTEM_PAL60,
	 VIDEO_SYSTEM_PALM60
} video_system_t;


typedef enum {   
        VIDEO_PAN_SCAN,       /* use pan and scan format */
	VIDEO_LETTER_BOX,     /* use letterbox format */
	VIDEO_CENTER_CUT_OUT  /* use center cut out format */
} video_displayformat_t;

typedef struct {
	int w;
	int h;
	video_format_t aspect_ratio;
} video_size_t;

typedef enum {
        VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */ 
	VIDEO_SOURCE_MEMORY /* If this source is selected, the stream 
			       comes from the user through the write 
			       system call */ 
} video_stream_source_t;


typedef enum {
	VIDEO_STOPPED, /* Video is stopped */ 
        VIDEO_PLAYING, /* Video is currently playing */ 
	VIDEO_FREEZED  /* Video is freezed */ 
} video_play_state_t; 


struct video_event { 
        int32_t type; 
#define VIDEO_EVENT_SIZE_CHANGED 1
        time_t timestamp;
	union {
	        video_size_t size;
	} u;
};


struct video_status { 
        int                   video_blank;   /* blank video on freeze? */
        video_play_state_t    play_state;    /* current state of playback */  
        video_stream_source_t stream_source; /* current source (demux/memory) */
        video_format_t        video_format;  /* current aspect ratio of stream*/
        video_displayformat_t display_format;/* selected cropping mode */
};


struct video_still_picture {
        char *iFrame;        /* pointer to a single iframe in memory */
        int32_t size; 
};


typedef 
struct video_highlight {
	int     active;      /*    1=show highlight, 0=hide highlight */
	uint8_t contrast1;   /*    7- 4  Pattern pixel contrast */
                             /*    3- 0  Background pixel contrast */
	uint8_t contrast2;   /*    7- 4  Emphasis pixel-2 contrast */
                             /*    3- 0  Emphasis pixel-1 contrast */
	uint8_t color1;      /*    7- 4  Pattern pixel color */
                             /*    3- 0  Background pixel color */
	uint8_t color2;      /*    7- 4  Emphasis pixel-2 color */
                             /*    3- 0  Emphasis pixel-1 color */
 	uint32_t ypos;       /*   23-22  auto action mode */
                             /*   21-12  start y */
                             /*    9- 0  end y */
	uint32_t xpos;       /*   23-22  button color number */
                             /*   21-12  start x */
                             /*    9- 0  end x */
} video_highlight_t;


typedef struct video_spu {
	int active;
	int stream_id;
} video_spu_t;


typedef struct video_spu_palette {      /* SPU Palette information */
	int length;
	uint8_t *palette;
} video_spu_palette_t;


typedef struct video_navi_pack {
	int length;          /* 0 ... 1024 */
	uint8_t data[1024];
} video_navi_pack_t;


typedef uint16_t video_attributes_t;
/*   bits: descr. */
/*   15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) */
/*   13-12 TV system (0=525/60, 1=625/50) */
/*   11-10 Aspect ratio (0=4:3, 3=16:9) */
/*    9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca */
/*    7    line 21-1 data present in GOP (1=yes, 0=no) */
/*    6    line 21-2 data present in GOP (1=yes, 0=no) */
/*    5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 */
/*    2    source letterboxed (1=yes, 0=no) */
/*    0    film/camera mode (0=camera, 1=film (625/50 only)) */


/* bit definitions for capabilities: */
/* can the hardware decode MPEG1 and/or MPEG2? */
#define VIDEO_CAP_MPEG1   1 
#define VIDEO_CAP_MPEG2   2
/* can you send a system and/or program stream to video device?
   (you still have to open the video and the audio device but only 
    send the stream to the video device) */
#define VIDEO_CAP_SYS     4
#define VIDEO_CAP_PROG    8
/* can the driver also handle SPU, NAVI and CSS encoded data? 
   (CSS API is not present yet) */
#define VIDEO_CAP_SPU    16
#define VIDEO_CAP_NAVI   32
#define VIDEO_CAP_CSS    64


#define VIDEO_STOP                 _IO('o', 21) 
#define VIDEO_PLAY                 _IO('o', 22)
#define VIDEO_FREEZE               _IO('o', 23)
#define VIDEO_CONTINUE             _IO('o', 24)
#define VIDEO_SELECT_SOURCE        _IO('o', 25)
#define VIDEO_SET_BLANK            _IO('o', 26)
#define VIDEO_GET_STATUS           _IOR('o', 27, struct video_status)
#define VIDEO_GET_EVENT            _IOR('o', 28, struct video_event)
#define VIDEO_SET_DISPLAY_FORMAT   _IO('o', 29)
#define VIDEO_STILLPICTURE         _IOW('o', 30, struct video_still_picture)
#define VIDEO_FAST_FORWARD         _IO('o', 31)
#define VIDEO_SLOWMOTION           _IO('o', 32)
#define VIDEO_GET_CAPABILITIES     _IOR('o', 33, unsigned int)
#define VIDEO_CLEAR_BUFFER         _IO('o',  34)
#define VIDEO_SET_ID               _IO('o', 35)
#define VIDEO_SET_STREAMTYPE       _IO('o', 36)
#define VIDEO_SET_FORMAT           _IO('o', 37)
#define VIDEO_SET_SYSTEM           _IO('o', 38)
#define VIDEO_SET_HIGHLIGHT        _IOW('o', 39, video_highlight_t)
#define VIDEO_SET_SPU              _IOW('o', 50, video_spu_t)
#define VIDEO_SET_SPU_PALETTE      _IOW('o', 51, video_spu_palette_t)
#define VIDEO_GET_NAVI             _IOR('o', 52, video_navi_pack_t)
#define VIDEO_SET_ATTRIBUTES       _IO('o', 53)
#define VIDEO_GET_SIZE             _IOR('o', 55, video_size_t)

#endif /*_DVBVIDEO_H_*/