1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* 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_ */
|
