FFmpeg: libavutil/stereo3d.c Source File
Go to the documentation of this file. 1 /*
2 * Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@gmail.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <string.h>
22
28
30 {
33 }
34
36 {
38 }
39
41 {
43 if (!stereo)
45
47
49 *
size =
sizeof(*stereo);
50
51 return stereo;
52 }
53
55 {
59 if (!side_data)
61
64
66 }
67
78 };
79
85 };
86
91 };
92
94 {
96 return "unknown";
97
99 }
100
102 {
104
108 }
109
110 return -1;
111 }
112
114 {
116 return "unknown";
117
119 }
120
122 {
124
128 }
129
130 return -1;
131 }
132
134 {
136 return "unknown";
137
139 }
140
142 {
144
148 }
149
150 return -1;
151 }
@ AV_PRIMARY_EYE_RIGHT
Right eye.
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
@ AV_STEREO3D_VIEW_LEFT
Frame contains only the left view.
@ AV_STEREO3D_SIDEBYSIDE_QUINCUNX
Views are next to each other, but when upscaling apply a checkerboard pattern.
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, size_t size)
Add a new side data to a frame.
int av_stereo3d_view_from_name(const char *name)
Get the AVStereo3DView form a human-readable name.
This structure describes decoded (raw) audio or video data.
@ AV_STEREO3D_VIEW_RIGHT
Frame contains only the right view.
@ AV_STEREO3D_VIEW_UNSPEC
Content is unspecified.
static const char *const stereo3d_view_names[]
@ AV_STEREO3D_UNSPEC
Video is stereoscopic but the packing is unspecified.
AVRational horizontal_field_of_view
Horizontal field of view, in degrees.
@ AV_STEREO3D_SIDEBYSIDE
Views are next to each other.
@ AV_STEREO3D_VIEW_PACKED
Frame contains two packed views.
@ AV_STEREO3D_2D
Video is not stereoscopic (and metadata has to be there).
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
const char * av_stereo3d_view_name(unsigned int view)
Provide a human-readable name of a given stereo3d view.
@ AV_STEREO3D_FRAMESEQUENCE
Views are alternated temporally.
#define FF_ARRAY_ELEMS(a)
@ AV_STEREO3D_LINES
Views are packed per line, as if interlaced.
int av_stereo3d_primary_eye_from_name(const char *name)
Get the AVStereo3DPrimaryEye form a human-readable name.
Rational number (pair of numerator and denominator).
@ AV_PRIMARY_EYE_LEFT
Left eye.
AVRational horizontal_disparity_adjustment
Relative shift of the left and right images, which changes the zero parallax plane.
AVStereo3D * av_stereo3d_alloc_size(size_t *size)
Allocate an AVStereo3D structure and set its fields to default values.
@ AV_STEREO3D_CHECKERBOARD
Views are packed in a checkerboard-like structure per pixel.
const char * av_stereo3d_primary_eye_name(unsigned int eye)
Provide a human-readable name of a given stereo3d primary eye.
@ AV_PRIMARY_EYE_NONE
Neither eye.
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
#define i(width, name, range_min, range_max)
@ AV_STEREO3D_TOPBOTTOM
Views are on top of each other.
@ AV_FRAME_DATA_STEREO3D
Stereoscopic 3d metadata.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
static const char *const stereo3d_type_names[]
AVStereo3D * av_stereo3d_alloc(void)
Allocate an AVStereo3D structure and set its fields to default values.
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
@ AV_STEREO3D_COLUMNS
Views are packed per column.
AVStereo3D * av_stereo3d_create_side_data(AVFrame *frame)
Allocate a complete AVFrameSideData and add it to the frame.
Structure to hold side data for an AVFrame.
static void get_defaults(AVStereo3D *stereo)
const char * av_stereo3d_type_name(unsigned int type)
Provide a human-readable name of a given stereo3d type.
Stereo 3D type: this structure describes how two videos are packed within a single video surface,...
static const char *const stereo3d_primary_eye_names[]
int av_stereo3d_from_name(const char *name)
Get the AVStereo3DType form a human-readable name.
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