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video.h
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/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ /* * video.h - DEPRECATED MPEG-TS video decoder API * * NOTE: should not be used on future drivers * * Copyright (C) 2000 Marcus Metzler <marcus@convergence.de> * & Ralph Metzler <ralph@convergence.de> * 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_ #include <linux/types.h> #include <time.h> 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_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; /* Decoder commands */ #define VIDEO_CMD_PLAY (0) #define VIDEO_CMD_STOP (1) #define VIDEO_CMD_FREEZE (2) #define VIDEO_CMD_CONTINUE (3) /* Flags for VIDEO_CMD_FREEZE */ #define VIDEO_CMD_FREEZE_TO_BLACK (1 << 0) /* Flags for VIDEO_CMD_STOP */ #define VIDEO_CMD_STOP_TO_BLACK (1 << 0) #define VIDEO_CMD_STOP_IMMEDIATELY (1 << 1) /* Play input formats: */ /* The decoder has no special format requirements */ #define VIDEO_PLAY_FMT_NONE (0) /* The decoder requires full GOPs */ #define VIDEO_PLAY_FMT_GOP (1) /* The structure must be zeroed before use by the application This ensures it can be extended safely in the future. */ struct video_command { __u32 cmd; __u32 flags; union { struct { __u64 pts; } stop; struct { /* 0 or 1000 specifies normal speed, 1 specifies forward single stepping, -1 specifies backward single stepping, >1: playback at speed/1000 of the normal speed, <-1: reverse playback at (-speed/1000) of the normal speed. */ __s32 speed; __u32 format; } play; struct { __u32 data[16]; } raw; }; }; /* FIELD_UNKNOWN can be used if the hardware does not know whether the Vsync is for an odd, even or progressive (i.e. non-interlaced) field. */ #define VIDEO_VSYNC_FIELD_UNKNOWN (0) #define VIDEO_VSYNC_FIELD_ODD (1) #define VIDEO_VSYNC_FIELD_EVEN (2) #define VIDEO_VSYNC_FIELD_PROGRESSIVE (3) struct video_event { __s32 type; #define VIDEO_EVENT_SIZE_CHANGED 1 #define VIDEO_EVENT_FRAME_RATE_CHANGED 2 #define VIDEO_EVENT_DECODER_STOPPED 3 #define VIDEO_EVENT_VSYNC 4 /* unused, make sure to use atomic time for y2038 if it ever gets used */ long timestamp; union { video_size_t size; unsigned int frame_rate; /* in frames per 1000sec */ unsigned char vsync_field; /* unknown/odd/even/progressive */ } 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 */ __s32 size; }; typedef __u16 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_STREAMTYPE _IO('o', 36) #define VIDEO_SET_FORMAT _IO('o', 37) #define VIDEO_GET_SIZE _IOR('o', 55, video_size_t) /** * VIDEO_GET_PTS * * Read the 33 bit presentation time stamp as defined * in ITU T-REC-H.222.0 / ISO/IEC 13818-1. * * The PTS should belong to the currently played * frame if possible, but may also be a value close to it * like the PTS of the last decoded frame or the last PTS * extracted by the PES parser. */ #define VIDEO_GET_PTS _IOR('o', 57, __u64) /* Read the number of displayed frames since the decoder was started */ #define VIDEO_GET_FRAME_COUNT _IOR('o', 58, __u64) #define VIDEO_COMMAND _IOWR('o', 59, struct video_command) #define VIDEO_TRY_COMMAND _IOWR('o', 60, struct video_command) #endif /* _DVBVIDEO_H_ */