| /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ |
| /* |
| * video.h |
| * |
| * 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_ */ |
