PipeWire 1.0.5

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meta.h
Go to the documentation of this file.
1/* Simple Plugin API */
2/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
3/* SPDX-License-Identifier: MIT */
4
5#ifndef SPA_META_H
6#define SPA_META_H
7
8#ifdef __cplusplus
9 extern "C" {
10#endif
11
12#include <spa/utils/defs.h>
13#include <spa/pod/pod.h>
14
20 enum spa_meta_type {
21 SPA_META_Invalid,
22 SPA_META_Header,
23 SPA_META_VideoCrop,
24 SPA_META_VideoDamage,
25 SPA_META_Bitmap,
26 SPA_META_Cursor,
27 SPA_META_Control,
29 SPA_META_Busy,
30 SPA_META_VideoTransform,
32 _SPA_META_LAST,
33};
34
42 struct spa_meta {
43 uint32_t type;
44 uint32_t size;
45 void *data;
46};
47
48 static inline void *spa_meta_first(const struct spa_meta *m) {
49 return m->data;
50}
51#define spa_meta_first spa_meta_first
52 static inline void *spa_meta_end(const struct spa_meta *m) {
53 return SPA_PTROFF(m->data,m->size,void);
54}
55#define spa_meta_end spa_meta_end
56#define spa_meta_check(p,m) (SPA_PTROFF(p,sizeof(*(p)),void) <= spa_meta_end(m))
57
62 struct spa_meta_header {
63#define SPA_META_HEADER_FLAG_DISCONT (1 << 0)
64#define SPA_META_HEADER_FLAG_CORRUPTED (1 << 1)
65#define SPA_META_HEADER_FLAG_MARKER (1 << 2)
66#define SPA_META_HEADER_FLAG_HEADER (1 << 3)
67#define SPA_META_HEADER_FLAG_GAP (1 << 4)
68#define SPA_META_HEADER_FLAG_DELTA_UNIT (1 << 5)
69 uint32_t flags;
70 uint32_t offset;
71 int64_t pts;
72 int64_t dts_offset;
73 uint64_t seq;
75};
76
78 struct spa_meta_region {
79 struct spa_region region;
80};
81
82 static inline bool spa_meta_region_is_valid(const struct spa_meta_region *m) {
83 return m->region.size.width != 0 && m->region.size.height != 0;
84}
85#define spa_meta_region_is_valid spa_meta_region_is_valid
86
88#define spa_meta_for_each(pos,meta) \
89 for ((pos) = (__typeof(pos))spa_meta_first(meta); \
90 spa_meta_check(pos, meta); \
91 (pos)++)
92
93#define spa_meta_bitmap_is_valid(m) ((m)->format != 0)
94
102 struct spa_meta_bitmap {
103 uint32_t format;
106 struct spa_rectangle size;
107 int32_t stride;
108 uint32_t offset;
112};
113
114#define spa_meta_cursor_is_valid(m) ((m)->id != 0)
115
121 struct spa_meta_cursor {
122 uint32_t id;
124 uint32_t flags;
125 struct spa_point position;
126 struct spa_point hotspot;
128 uint32_t bitmap_offset;
132};
133
135 struct spa_meta_control {
136 struct spa_pod_sequence sequence;
137};
138
140 struct spa_meta_busy {
141 uint32_t flags;
142 uint32_t count;
143};
144
145 enum spa_meta_videotransform_value {
146 SPA_META_TRANSFORMATION_None = 0,
147 SPA_META_TRANSFORMATION_90,
148 SPA_META_TRANSFORMATION_180,
149 SPA_META_TRANSFORMATION_270,
150 SPA_META_TRANSFORMATION_Flipped,
153 SPA_META_TRANSFORMATION_Flipped90,
154 SPA_META_TRANSFORMATION_Flipped180,
155 SPA_META_TRANSFORMATION_Flipped270,
156};
157
159 struct spa_meta_videotransform {
160 uint32_t transform;
162};
163
168#ifdef __cplusplus
169} /* extern "C" */
170#endif
171
172#endif /* SPA_META_H */
defs.h
spa/utils/defs.h
spa_meta_region_is_valid
#define spa_meta_region_is_valid
Definition meta.h:96
spa_meta_end
#define spa_meta_end
Definition meta.h:60
spa_meta_first
#define spa_meta_first
Definition meta.h:56
spa_meta_videotransform_value
spa_meta_videotransform_value
Definition meta.h:156
spa_meta_type
spa_meta_type
Definition meta.h:25
SPA_META_TRANSFORMATION_Flipped270
@ SPA_META_TRANSFORMATION_Flipped270
flip then rotate around 270 degree counter-clockwise
Definition meta.h:166
SPA_META_TRANSFORMATION_Flipped
@ SPA_META_TRANSFORMATION_Flipped
180 degree flipped around the vertical axis.
Definition meta.h:161
SPA_META_TRANSFORMATION_270
@ SPA_META_TRANSFORMATION_270
270 degree counter-clockwise
Definition meta.h:160
SPA_META_TRANSFORMATION_Flipped180
@ SPA_META_TRANSFORMATION_Flipped180
flip then rotate around 180 degree counter-clockwise
Definition meta.h:165
SPA_META_TRANSFORMATION_Flipped90
@ SPA_META_TRANSFORMATION_Flipped90
flip then rotate around 90 degree counter-clockwise
Definition meta.h:164
SPA_META_TRANSFORMATION_None
@ SPA_META_TRANSFORMATION_None
no transform
Definition meta.h:157
SPA_META_TRANSFORMATION_90
@ SPA_META_TRANSFORMATION_90
90 degree counter-clockwise
Definition meta.h:158
SPA_META_TRANSFORMATION_180
@ SPA_META_TRANSFORMATION_180
180 degree counter-clockwise
Definition meta.h:159
SPA_META_VideoDamage
@ SPA_META_VideoDamage
array of struct spa_meta_region with damage, where an invalid entry or end-of-array marks the end.
Definition meta.h:29
SPA_META_Bitmap
@ SPA_META_Bitmap
struct spa_meta_bitmap
Definition meta.h:30
SPA_META_VideoTransform
@ SPA_META_VideoTransform
struct spa_meta_transform
Definition meta.h:35
SPA_META_Cursor
@ SPA_META_Cursor
struct spa_meta_cursor
Definition meta.h:31
SPA_META_Busy
@ SPA_META_Busy
don't write to buffer when count > 0
Definition meta.h:34
SPA_META_VideoCrop
@ SPA_META_VideoCrop
struct spa_meta_region with cropping data
Definition meta.h:28
SPA_META_Header
@ SPA_META_Header
struct spa_meta_header
Definition meta.h:27
SPA_META_Control
@ SPA_META_Control
metadata contains a spa_meta_control associated with the data
Definition meta.h:32
SPA_META_Invalid
@ SPA_META_Invalid
Definition meta.h:26
_SPA_META_LAST
@ _SPA_META_LAST
not part of ABI/API
Definition meta.h:37
SPA_PTROFF
#define SPA_PTROFF(ptr_, offset_, type_)
Return the address (buffer + offset) as pointer of type.
Definition defs.h:198
pod.h
spa/pod/pod.h
spa_meta_bitmap
Bitmap information.
Definition meta.h:113
spa_meta_bitmap::size
struct spa_rectangle size
width and height of bitmap
Definition meta.h:117
spa_meta_bitmap::format
uint32_t format
bitmap video format, one of enum spa_video_format.
Definition meta.h:114
spa_meta_bitmap::offset
uint32_t offset
offset of bitmap data in this structure.
Definition meta.h:119
spa_meta_bitmap::stride
int32_t stride
stride of bitmap data
Definition meta.h:118
spa_meta_busy
a busy counter for the buffer
Definition meta.h:151
spa_meta_busy::count
uint32_t count
number of users busy with the buffer
Definition meta.h:153
spa_meta_busy::flags
uint32_t flags
Definition meta.h:152
spa_meta_control
a timed set of events associated with the buffer
Definition meta.h:146
spa_meta_control::sequence
struct spa_pod_sequence sequence
Definition meta.h:147
spa_meta_cursor
Cursor information.
Definition meta.h:132
spa_meta_cursor::flags
uint32_t flags
extra flags
Definition meta.h:135
spa_meta_cursor::hotspot
struct spa_point hotspot
offsets for hotspot in bitmap, this field has no meaning when there is no valid bitmap (see below)
Definition meta.h:137
spa_meta_cursor::id
uint32_t id
cursor id.
Definition meta.h:133
spa_meta_cursor::position
struct spa_point position
position on screen
Definition meta.h:136
spa_meta_cursor::bitmap_offset
uint32_t bitmap_offset
offset of bitmap meta in this structure.
Definition meta.h:139
spa_meta_header
Describes essential buffer header metadata such as flags and timestamps.
Definition meta.h:67
spa_meta_header::offset
uint32_t offset
offset in current cycle
Definition meta.h:81
spa_meta_header::flags
uint32_t flags
flags
Definition meta.h:80
spa_meta_header::seq
uint64_t seq
sequence number, increments with a media specific frequency
Definition meta.h:84
spa_meta_header::pts
int64_t pts
presentation timestamp in nanoseconds
Definition meta.h:82
spa_meta_header::dts_offset
int64_t dts_offset
decoding timestamp as a difference with pts
Definition meta.h:83
spa_meta_region
metadata structure for Region or an array of these for RegionArray
Definition meta.h:89
spa_meta_region::region
struct spa_region region
Definition meta.h:90
spa_meta_videotransform
a transformation of the buffer
Definition meta.h:170
spa_meta_videotransform::transform
uint32_t transform
orientation transformation that was applied to the buffer, one of enum spa_meta_videotransform_value
Definition meta.h:171
spa_meta
A metadata element.
Definition meta.h:47
spa_meta::size
uint32_t size
size of metadata
Definition meta.h:49
spa_meta::type
uint32_t type
metadata type, one of enum spa_meta_type
Definition meta.h:48
spa_meta::data
void * data
pointer to metadata
Definition meta.h:50
spa_pod_sequence
a sequence of timed controls
Definition pod.h:248
spa_point
Definition defs.h:109
spa_rectangle
Definition defs.h:102
spa_rectangle::width
uint32_t width
Definition defs.h:103
spa_rectangle::height
uint32_t height
Definition defs.h:104
spa_region
Definition defs.h:116
spa_region::size
struct spa_rectangle size
Definition defs.h:118