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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
|
/* GStreamer
* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_VIDEO_META_H__
#define __GST_VIDEO_META_H__
#include <gst/gst.h>
#include <gst/video/video.h>
G_BEGIN_DECLS
#define GST_VIDEO_META_API_TYPE (gst_video_meta_api_get_type())
#define GST_VIDEO_META_INFO (gst_video_meta_get_info())
typedef struct _GstVideoMeta GstVideoMeta;
#define GST_CAPS_FEATURE_META_GST_VIDEO_META "meta:GstVideoMeta"
#define GST_VIDEO_CROP_META_API_TYPE (gst_video_crop_meta_api_get_type())
#define GST_VIDEO_CROP_META_INFO (gst_video_crop_meta_get_info())
typedef struct _GstVideoCropMeta GstVideoCropMeta;
/**
* GstVideoMeta:
* @meta: parent #GstMeta
* @buffer: the buffer this metadata belongs to
* @flags: additional video flags
* @format: the video format
* @id: identifier of the frame
* @width: the video width
* @height: the video height
* @n_planes: the number of planes in the image
* @offset: array of offsets for the planes. This field might not always be
* valid, it is used by the default implementation of @map.
* @stride: array of strides for the planes. This field might not always be
* valid, it is used by the default implementation of @map.
* @map: map the memory of a plane
* @unmap: unmap the memory of a plane
*
* Extra buffer metadata describing image properties
*/
struct _GstVideoMeta {
GstMeta meta;
GstBuffer *buffer;
GstVideoFrameFlags flags;
GstVideoFormat format;
gint id;
guint width;
guint height;
guint n_planes;
gsize offset[GST_VIDEO_MAX_PLANES];
gint stride[GST_VIDEO_MAX_PLANES];
gboolean (*map) (GstVideoMeta *meta, guint plane, GstMapInfo *info,
gpointer *data, gint * stride, GstMapFlags flags);
gboolean (*unmap) (GstVideoMeta *meta, guint plane, GstMapInfo *info);
};
GType gst_video_meta_api_get_type (void);
const GstMetaInfo * gst_video_meta_get_info (void);
#define gst_buffer_get_video_meta(b) ((GstVideoMeta*)gst_buffer_get_meta((b),GST_VIDEO_META_API_TYPE))
GstVideoMeta * gst_buffer_get_video_meta_id (GstBuffer *buffer, gint id);
GstVideoMeta * gst_buffer_add_video_meta (GstBuffer *buffer, GstVideoFrameFlags flags,
GstVideoFormat format, guint width, guint height);
GstVideoMeta * gst_buffer_add_video_meta_full (GstBuffer *buffer, GstVideoFrameFlags flags,
GstVideoFormat format, guint width, guint height,
guint n_planes, gsize offset[GST_VIDEO_MAX_PLANES],
gint stride[GST_VIDEO_MAX_PLANES]);
gboolean gst_video_meta_map (GstVideoMeta *meta, guint plane, GstMapInfo *info,
gpointer *data, gint *stride, GstMapFlags flags);
gboolean gst_video_meta_unmap (GstVideoMeta *meta, guint plane, GstMapInfo *info);
/**
* GstVideoCropMeta:
* @meta: parent #GstMeta
* @x: the horizontal offset
* @y: the vertical offset
* @width: the cropped width
* @height: the cropped height
*
* Extra buffer metadata describing image cropping.
*/
struct _GstVideoCropMeta {
GstMeta meta;
guint x;
guint y;
guint width;
guint height;
};
GType gst_video_crop_meta_api_get_type (void);
const GstMetaInfo * gst_video_crop_meta_get_info (void);
#define gst_buffer_get_video_crop_meta(b) ((GstVideoCropMeta*)gst_buffer_get_meta((b),GST_VIDEO_CROP_META_API_TYPE))
#define gst_buffer_add_video_crop_meta(b) ((GstVideoCropMeta*)gst_buffer_add_meta((b),GST_VIDEO_CROP_META_INFO, NULL))
/* video metadata transforms */
GQuark gst_video_meta_transform_scale_get_quark (void);
/**
* gst_video_meta_transform_scale:
*
* GQuark for the video "gst-video-scale" transform.
*/
#define GST_VIDEO_META_TRANSFORM_IS_SCALE(type) ((type) == gst_video_meta_transform_scale_get_quark())
/**
* GstVideoMetaTransform:
* @in_info: the input #GstVideoInfo
* @out_info: the output #GstVideoInfo
*
* Extra data passed to a video transform #GstMetaTransformFunction such as:
* "gst-video-scale".
*/
typedef struct {
GstVideoInfo *in_info;
GstVideoInfo *out_info;
} GstVideoMetaTransform;
/**
* GstVideoGLTextureType:
* @GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE: Luminance texture, GL_LUMINANCE
* @GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA: Luminance-alpha texture, GL_LUMINANCE_ALPHA
* @GST_VIDEO_GL_TEXTURE_TYPE_RGB16: RGB 565 texture, GL_RGB
* @GST_VIDEO_GL_TEXTURE_TYPE_RGB: RGB texture, GL_RGB
* @GST_VIDEO_GL_TEXTURE_TYPE_RGBA: RGBA texture, GL_RGBA
* @GST_VIDEO_GL_TEXTURE_TYPE_R: R texture, GL_RED_EXT
* @GST_VIDEO_GL_TEXTURE_TYPE_RG: RG texture, GL_RG_EXT
*
* The GL texture type.
*/
typedef enum
{
GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE,
GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA,
GST_VIDEO_GL_TEXTURE_TYPE_RGB16,
GST_VIDEO_GL_TEXTURE_TYPE_RGB,
GST_VIDEO_GL_TEXTURE_TYPE_RGBA,
GST_VIDEO_GL_TEXTURE_TYPE_R,
GST_VIDEO_GL_TEXTURE_TYPE_RG
} GstVideoGLTextureType;
/**
* GstVideoGLTextureOrientation:
* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL: Top line first in memory, left row first
* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_FLIP: Bottom line first in memory, left row first
* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_NORMAL: Top line first in memory, right row first
* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_FLIP: Bottom line first in memory, right row first
*
* The orientation of the GL texture.
*/
typedef enum
{
GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL,
GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_FLIP,
GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_NORMAL,
GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_FLIP
} GstVideoGLTextureOrientation;
#define GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE (gst_video_gl_texture_upload_meta_api_get_type())
#define GST_VIDEO_GL_TEXTURE_UPLOAD_META_INFO (gst_video_gl_texture_upload_meta_get_info())
typedef struct _GstVideoGLTextureUploadMeta GstVideoGLTextureUploadMeta;
typedef gboolean (*GstVideoGLTextureUpload) (GstVideoGLTextureUploadMeta *meta, guint texture_id[4]);
#define GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META "meta:GstVideoGLTextureUploadMeta"
/**
* GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META:
*
* An option that can be activated on a bufferpool to request gl texture upload
* meta on buffers from the pool.
*
* When this option is enabled on the bufferpool,
* @GST_BUFFER_POOL_OPTION_VIDEO_META should also be enabled.
*
* Since: 1.2.2
*/
#define GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META "GstBufferPoolOptionVideoGLTextureUploadMeta"
/**
* GstVideoGLTextureUploadMeta:
* @meta: parent #GstMeta
* @texture_orientation: Orientation of the textures
* @n_textures: Number of textures that are generated
* @texture_type: Type of each texture
*
* Extra buffer metadata for uploading a buffer to an OpenGL texture
* ID. The caller of gst_video_gl_texture_upload_meta_upload() must
* have OpenGL set up and call this from a thread where it is valid
* to upload something to an OpenGL texture.
*/
struct _GstVideoGLTextureUploadMeta {
GstMeta meta;
GstVideoGLTextureOrientation texture_orientation;
guint n_textures;
GstVideoGLTextureType texture_type[4];
/* <private> */
GstBuffer *buffer;
GstVideoGLTextureUpload upload;
gpointer user_data;
GBoxedCopyFunc user_data_copy;
GBoxedFreeFunc user_data_free;
};
GType gst_video_gl_texture_upload_meta_api_get_type (void);
const GstMetaInfo * gst_video_gl_texture_upload_meta_get_info (void);
#define gst_buffer_get_video_gl_texture_upload_meta(b) ((GstVideoGLTextureUploadMeta*)gst_buffer_get_meta((b),GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE))
GstVideoGLTextureUploadMeta *
gst_buffer_add_video_gl_texture_upload_meta (GstBuffer *buffer,
GstVideoGLTextureOrientation texture_orientation,
guint n_textures,
GstVideoGLTextureType texture_type[4],
GstVideoGLTextureUpload upload,
gpointer user_data,
GBoxedCopyFunc user_data_copy,
GBoxedFreeFunc user_data_free);
gboolean gst_video_gl_texture_upload_meta_upload (GstVideoGLTextureUploadMeta *meta,
guint texture_id[4]);
/**
* GstVideoRegionOfInterestMeta:
* @meta: parent #GstMeta
* @roi_type: GQuark describing the semantic of the Roi (f.i. a face, a pedestrian)
* @id: identifier of this particular ROI
* @parent_id: identifier of its parent ROI, used f.i. for ROI hierarchisation.
* @x: x component of upper-left corner
* @y: y component of upper-left corner
* @width: bounding box width
* @height: bounding box height
*
* Extra buffer metadata describing an image region of interest
*/
typedef struct {
GstMeta meta;
GQuark roi_type;
gint id;
gint parent_id;
guint x;
guint y;
guint w;
guint h;
} GstVideoRegionOfInterestMeta;
GType gst_video_region_of_interest_meta_api_get_type (void);
#define GST_VIDEO_REGION_OF_INTEREST_META_API_TYPE (gst_video_region_of_interest_meta_api_get_type())
const GstMetaInfo *gst_video_region_of_interest_meta_get_info (void);
#define GST_VIDEO_REGION_OF_INTEREST_META_INFO (gst_video_region_of_interest_meta_get_info())
#define gst_buffer_get_video_region_of_interest_meta(b) \
((GstVideoRegionOfInterestMeta*)gst_buffer_get_meta((b),GST_VIDEO_REGION_OF_INTEREST_META_API_TYPE))
GstVideoRegionOfInterestMeta *gst_buffer_get_video_region_of_interest_meta_id (GstBuffer * buffer,
gint id);
GstVideoRegionOfInterestMeta *gst_buffer_add_video_region_of_interest_meta (GstBuffer * buffer,
const gchar * roi_type,
guint x,
guint y,
guint w,
guint h);
GstVideoRegionOfInterestMeta *gst_buffer_add_video_region_of_interest_meta_id (GstBuffer * buffer,
GQuark roi_type,
guint x,
guint y,
guint w,
guint h);
G_END_DECLS
#endif /* __GST_VIDEO_META_H__ */
|
