mirror of
https://github.com/DigitalDevices/dddvb.git
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206 lines
6.3 KiB
C
206 lines
6.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
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/*
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* video.h - DEPRECATED MPEG-TS video decoder API
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*
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* NOTE: should not be used on future drivers
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*
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* Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
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* & Ralph Metzler <ralph@convergence.de>
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* for convergence integrated media GmbH
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*/
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#ifndef _UAPI_DVBVIDEO_H_
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#define _UAPI_DVBVIDEO_H_
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#include <linux/types.h>
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#ifndef __KERNEL__
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#include <time.h>
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#endif
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typedef enum {
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VIDEO_FORMAT_4_3, /* Select 4:3 format */
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VIDEO_FORMAT_16_9, /* Select 16:9 format. */
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VIDEO_FORMAT_221_1 /* 2.21:1 */
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} video_format_t;
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typedef enum {
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VIDEO_PAN_SCAN, /* use pan and scan format */
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VIDEO_LETTER_BOX, /* use letterbox format */
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VIDEO_CENTER_CUT_OUT /* use center cut out format */
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} video_displayformat_t;
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typedef struct {
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int w;
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int h;
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video_format_t aspect_ratio;
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} video_size_t;
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typedef enum {
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VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */
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VIDEO_SOURCE_MEMORY /* If this source is selected, the stream
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comes from the user through the write
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system call */
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} video_stream_source_t;
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typedef enum {
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VIDEO_STOPPED, /* Video is stopped */
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VIDEO_PLAYING, /* Video is currently playing */
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VIDEO_FREEZED /* Video is freezed */
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} video_play_state_t;
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/* Decoder commands */
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#define VIDEO_CMD_PLAY (0)
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#define VIDEO_CMD_STOP (1)
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#define VIDEO_CMD_FREEZE (2)
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#define VIDEO_CMD_CONTINUE (3)
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/* Flags for VIDEO_CMD_FREEZE */
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#define VIDEO_CMD_FREEZE_TO_BLACK (1 << 0)
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/* Flags for VIDEO_CMD_STOP */
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#define VIDEO_CMD_STOP_TO_BLACK (1 << 0)
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#define VIDEO_CMD_STOP_IMMEDIATELY (1 << 1)
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/* Play input formats: */
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/* The decoder has no special format requirements */
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#define VIDEO_PLAY_FMT_NONE (0)
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/* The decoder requires full GOPs */
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#define VIDEO_PLAY_FMT_GOP (1)
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/* The structure must be zeroed before use by the application
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This ensures it can be extended safely in the future. */
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struct video_command {
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__u32 cmd;
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__u32 flags;
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union {
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struct {
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__u64 pts;
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} stop;
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struct {
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/* 0 or 1000 specifies normal speed,
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1 specifies forward single stepping,
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-1 specifies backward single stepping,
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>1: playback at speed/1000 of the normal speed,
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<-1: reverse playback at (-speed/1000) of the normal speed. */
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__s32 speed;
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__u32 format;
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} play;
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struct {
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__u32 data[16];
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} raw;
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};
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};
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/* FIELD_UNKNOWN can be used if the hardware does not know whether
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the Vsync is for an odd, even or progressive (i.e. non-interlaced)
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field. */
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#define VIDEO_VSYNC_FIELD_UNKNOWN (0)
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#define VIDEO_VSYNC_FIELD_ODD (1)
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#define VIDEO_VSYNC_FIELD_EVEN (2)
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#define VIDEO_VSYNC_FIELD_PROGRESSIVE (3)
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struct video_event {
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__s32 type;
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#define VIDEO_EVENT_SIZE_CHANGED 1
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#define VIDEO_EVENT_FRAME_RATE_CHANGED 2
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#define VIDEO_EVENT_DECODER_STOPPED 3
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#define VIDEO_EVENT_VSYNC 4
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/* unused, make sure to use atomic time for y2038 if it ever gets used */
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long timestamp;
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union {
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video_size_t size;
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unsigned int frame_rate; /* in frames per 1000sec */
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unsigned char vsync_field; /* unknown/odd/even/progressive */
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} u;
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};
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struct video_status {
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int video_blank; /* blank video on freeze? */
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video_play_state_t play_state; /* current state of playback */
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video_stream_source_t stream_source; /* current source (demux/memory) */
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video_format_t video_format; /* current aspect ratio of stream*/
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video_displayformat_t display_format;/* selected cropping mode */
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};
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struct video_still_picture {
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char __user *iFrame; /* pointer to a single iframe in memory */
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__s32 size;
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};
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typedef __u16 video_attributes_t;
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/* bits: descr. */
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/* 15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) */
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/* 13-12 TV system (0=525/60, 1=625/50) */
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/* 11-10 Aspect ratio (0=4:3, 3=16:9) */
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/* 9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca */
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/* 7 line 21-1 data present in GOP (1=yes, 0=no) */
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/* 6 line 21-2 data present in GOP (1=yes, 0=no) */
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/* 5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 */
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/* 2 source letterboxed (1=yes, 0=no) */
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/* 0 film/camera mode (0=
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*camera, 1=film (625/50 only)) */
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/* bit definitions for capabilities: */
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/* can the hardware decode MPEG1 and/or MPEG2? */
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#define VIDEO_CAP_MPEG1 1
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#define VIDEO_CAP_MPEG2 2
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/* can you send a system and/or program stream to video device?
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(you still have to open the video and the audio device but only
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send the stream to the video device) */
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#define VIDEO_CAP_SYS 4
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#define VIDEO_CAP_PROG 8
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/* can the driver also handle SPU, NAVI and CSS encoded data?
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(CSS API is not present yet) */
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#define VIDEO_CAP_SPU 16
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#define VIDEO_CAP_NAVI 32
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#define VIDEO_CAP_CSS 64
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#define VIDEO_STOP _IO('o', 21)
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#define VIDEO_PLAY _IO('o', 22)
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#define VIDEO_FREEZE _IO('o', 23)
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#define VIDEO_CONTINUE _IO('o', 24)
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#define VIDEO_SELECT_SOURCE _IO('o', 25)
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#define VIDEO_SET_BLANK _IO('o', 26)
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#define VIDEO_GET_STATUS _IOR('o', 27, struct video_status)
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#define VIDEO_GET_EVENT _IOR('o', 28, struct video_event)
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#define VIDEO_SET_DISPLAY_FORMAT _IO('o', 29)
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#define VIDEO_STILLPICTURE _IOW('o', 30, struct video_still_picture)
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#define VIDEO_FAST_FORWARD _IO('o', 31)
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#define VIDEO_SLOWMOTION _IO('o', 32)
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#define VIDEO_GET_CAPABILITIES _IOR('o', 33, unsigned int)
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#define VIDEO_CLEAR_BUFFER _IO('o', 34)
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#define VIDEO_SET_STREAMTYPE _IO('o', 36)
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#define VIDEO_SET_FORMAT _IO('o', 37)
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#define VIDEO_GET_SIZE _IOR('o', 55, video_size_t)
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/**
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* VIDEO_GET_PTS
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*
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* Read the 33 bit presentation time stamp as defined
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* in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
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*
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* The PTS should belong to the currently played
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* frame if possible, but may also be a value close to it
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* like the PTS of the last decoded frame or the last PTS
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* extracted by the PES parser.
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*/
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#define VIDEO_GET_PTS _IOR('o', 57, __u64)
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/* Read the number of displayed frames since the decoder was started */
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#define VIDEO_GET_FRAME_COUNT _IOR('o', 58, __u64)
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#define VIDEO_COMMAND _IOWR('o', 59, struct video_command)
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#define VIDEO_TRY_COMMAND _IOWR('o', 60, struct video_command)
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#endif /* _UAPI_DVBVIDEO_H_ */
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