video.h (6368B) - Raw
1 /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ 2 /* 3 * video.h - DEPRECATED MPEG-TS video decoder API 4 * 5 * NOTE: should not be used on future drivers 6 * 7 * Copyright (C) 2000 Marcus Metzler <marcus@convergence.de> 8 * & Ralph Metzler <ralph@convergence.de> 9 * for convergence integrated media GmbH 10 */ 11 12 #ifndef _DVBVIDEO_H_ 13 #define _DVBVIDEO_H_ 14 15 #include <linux/types.h> 16 #include <time.h> 17 18 typedef enum { 19 VIDEO_FORMAT_4_3, /* Select 4:3 format */ 20 VIDEO_FORMAT_16_9, /* Select 16:9 format. */ 21 VIDEO_FORMAT_221_1 /* 2.21:1 */ 22 } video_format_t; 23 24 25 typedef enum { 26 VIDEO_PAN_SCAN, /* use pan and scan format */ 27 VIDEO_LETTER_BOX, /* use letterbox format */ 28 VIDEO_CENTER_CUT_OUT /* use center cut out format */ 29 } video_displayformat_t; 30 31 typedef struct { 32 int w; 33 int h; 34 video_format_t aspect_ratio; 35 } video_size_t; 36 37 typedef enum { 38 VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */ 39 VIDEO_SOURCE_MEMORY /* If this source is selected, the stream 40 comes from the user through the write 41 system call */ 42 } video_stream_source_t; 43 44 45 typedef enum { 46 VIDEO_STOPPED, /* Video is stopped */ 47 VIDEO_PLAYING, /* Video is currently playing */ 48 VIDEO_FREEZED /* Video is freezed */ 49 } video_play_state_t; 50 51 52 /* Decoder commands */ 53 #define VIDEO_CMD_PLAY (0) 54 #define VIDEO_CMD_STOP (1) 55 #define VIDEO_CMD_FREEZE (2) 56 #define VIDEO_CMD_CONTINUE (3) 57 58 /* Flags for VIDEO_CMD_FREEZE */ 59 #define VIDEO_CMD_FREEZE_TO_BLACK (1 << 0) 60 61 /* Flags for VIDEO_CMD_STOP */ 62 #define VIDEO_CMD_STOP_TO_BLACK (1 << 0) 63 #define VIDEO_CMD_STOP_IMMEDIATELY (1 << 1) 64 65 /* Play input formats: */ 66 /* The decoder has no special format requirements */ 67 #define VIDEO_PLAY_FMT_NONE (0) 68 /* The decoder requires full GOPs */ 69 #define VIDEO_PLAY_FMT_GOP (1) 70 71 /* The structure must be zeroed before use by the application 72 This ensures it can be extended safely in the future. */ 73 struct video_command { 74 __u32 cmd; 75 __u32 flags; 76 union { 77 struct { 78 __u64 pts; 79 } stop; 80 81 struct { 82 /* 0 or 1000 specifies normal speed, 83 1 specifies forward single stepping, 84 -1 specifies backward single stepping, 85 >1: playback at speed/1000 of the normal speed, 86 <-1: reverse playback at (-speed/1000) of the normal speed. */ 87 __s32 speed; 88 __u32 format; 89 } play; 90 91 struct { 92 __u32 data[16]; 93 } raw; 94 }; 95 }; 96 97 /* FIELD_UNKNOWN can be used if the hardware does not know whether 98 the Vsync is for an odd, even or progressive (i.e. non-interlaced) 99 field. */ 100 #define VIDEO_VSYNC_FIELD_UNKNOWN (0) 101 #define VIDEO_VSYNC_FIELD_ODD (1) 102 #define VIDEO_VSYNC_FIELD_EVEN (2) 103 #define VIDEO_VSYNC_FIELD_PROGRESSIVE (3) 104 105 struct video_event { 106 __s32 type; 107 #define VIDEO_EVENT_SIZE_CHANGED 1 108 #define VIDEO_EVENT_FRAME_RATE_CHANGED 2 109 #define VIDEO_EVENT_DECODER_STOPPED 3 110 #define VIDEO_EVENT_VSYNC 4 111 /* unused, make sure to use atomic time for y2038 if it ever gets used */ 112 long timestamp; 113 union { 114 video_size_t size; 115 unsigned int frame_rate; /* in frames per 1000sec */ 116 unsigned char vsync_field; /* unknown/odd/even/progressive */ 117 } u; 118 }; 119 120 121 struct video_status { 122 int video_blank; /* blank video on freeze? */ 123 video_play_state_t play_state; /* current state of playback */ 124 video_stream_source_t stream_source; /* current source (demux/memory) */ 125 video_format_t video_format; /* current aspect ratio of stream*/ 126 video_displayformat_t display_format;/* selected cropping mode */ 127 }; 128 129 130 struct video_still_picture { 131 char *iFrame; /* pointer to a single iframe in memory */ 132 __s32 size; 133 }; 134 135 136 typedef __u16 video_attributes_t; 137 /* bits: descr. */ 138 /* 15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) */ 139 /* 13-12 TV system (0=525/60, 1=625/50) */ 140 /* 11-10 Aspect ratio (0=4:3, 3=16:9) */ 141 /* 9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca */ 142 /* 7 line 21-1 data present in GOP (1=yes, 0=no) */ 143 /* 6 line 21-2 data present in GOP (1=yes, 0=no) */ 144 /* 5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 */ 145 /* 2 source letterboxed (1=yes, 0=no) */ 146 /* 0 film/camera mode (0= 147 *camera, 1=film (625/50 only)) */ 148 149 150 /* bit definitions for capabilities: */ 151 /* can the hardware decode MPEG1 and/or MPEG2? */ 152 #define VIDEO_CAP_MPEG1 1 153 #define VIDEO_CAP_MPEG2 2 154 /* can you send a system and/or program stream to video device? 155 (you still have to open the video and the audio device but only 156 send the stream to the video device) */ 157 #define VIDEO_CAP_SYS 4 158 #define VIDEO_CAP_PROG 8 159 /* can the driver also handle SPU, NAVI and CSS encoded data? 160 (CSS API is not present yet) */ 161 #define VIDEO_CAP_SPU 16 162 #define VIDEO_CAP_NAVI 32 163 #define VIDEO_CAP_CSS 64 164 165 166 #define VIDEO_STOP _IO('o', 21) 167 #define VIDEO_PLAY _IO('o', 22) 168 #define VIDEO_FREEZE _IO('o', 23) 169 #define VIDEO_CONTINUE _IO('o', 24) 170 #define VIDEO_SELECT_SOURCE _IO('o', 25) 171 #define VIDEO_SET_BLANK _IO('o', 26) 172 #define VIDEO_GET_STATUS _IOR('o', 27, struct video_status) 173 #define VIDEO_GET_EVENT _IOR('o', 28, struct video_event) 174 #define VIDEO_SET_DISPLAY_FORMAT _IO('o', 29) 175 #define VIDEO_STILLPICTURE _IOW('o', 30, struct video_still_picture) 176 #define VIDEO_FAST_FORWARD _IO('o', 31) 177 #define VIDEO_SLOWMOTION _IO('o', 32) 178 #define VIDEO_GET_CAPABILITIES _IOR('o', 33, unsigned int) 179 #define VIDEO_CLEAR_BUFFER _IO('o', 34) 180 #define VIDEO_SET_STREAMTYPE _IO('o', 36) 181 #define VIDEO_SET_FORMAT _IO('o', 37) 182 #define VIDEO_GET_SIZE _IOR('o', 55, video_size_t) 183 184 /** 185 * VIDEO_GET_PTS 186 * 187 * Read the 33 bit presentation time stamp as defined 188 * in ITU T-REC-H.222.0 / ISO/IEC 13818-1. 189 * 190 * The PTS should belong to the currently played 191 * frame if possible, but may also be a value close to it 192 * like the PTS of the last decoded frame or the last PTS 193 * extracted by the PES parser. 194 */ 195 #define VIDEO_GET_PTS _IOR('o', 57, __u64) 196 197 /* Read the number of displayed frames since the decoder was started */ 198 #define VIDEO_GET_FRAME_COUNT _IOR('o', 58, __u64) 199 200 #define VIDEO_COMMAND _IOWR('o', 59, struct video_command) 201 #define VIDEO_TRY_COMMAND _IOWR('o', 60, struct video_command) 202 203 #endif /* _DVBVIDEO_H_ */