326 lines
7.3 KiB
C
326 lines
7.3 KiB
C
/*
|
|
* Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @ingroup lavu_video_stereo3d
|
|
* Stereoscopic video
|
|
*/
|
|
|
|
#ifndef AVUTIL_STEREO3D_H
|
|
#define AVUTIL_STEREO3D_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "frame.h"
|
|
|
|
/**
|
|
* @defgroup lavu_video_stereo3d Stereo3D types and functions
|
|
* @ingroup lavu_video
|
|
*
|
|
* A stereoscopic video file consists in multiple views embedded in a single
|
|
* frame, usually describing two views of a scene. This file describes all
|
|
* possible codec-independent view arrangements.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* List of possible 3D Types
|
|
*/
|
|
enum AVStereo3DType {
|
|
/**
|
|
* Video is not stereoscopic (and metadata has to be there).
|
|
*/
|
|
AV_STEREO3D_2D,
|
|
|
|
/**
|
|
* Views are next to each other.
|
|
*
|
|
* @code{.unparsed}
|
|
* LLLLRRRR
|
|
* LLLLRRRR
|
|
* LLLLRRRR
|
|
* ...
|
|
* @endcode
|
|
*/
|
|
AV_STEREO3D_SIDEBYSIDE,
|
|
|
|
/**
|
|
* Views are on top of each other.
|
|
*
|
|
* @code{.unparsed}
|
|
* LLLLLLLL
|
|
* LLLLLLLL
|
|
* RRRRRRRR
|
|
* RRRRRRRR
|
|
* @endcode
|
|
*/
|
|
AV_STEREO3D_TOPBOTTOM,
|
|
|
|
/**
|
|
* Views are alternated temporally.
|
|
*
|
|
* @code{.unparsed}
|
|
* frame0 frame1 frame2 ...
|
|
* LLLLLLLL RRRRRRRR LLLLLLLL
|
|
* LLLLLLLL RRRRRRRR LLLLLLLL
|
|
* LLLLLLLL RRRRRRRR LLLLLLLL
|
|
* ... ... ...
|
|
* @endcode
|
|
*/
|
|
AV_STEREO3D_FRAMESEQUENCE,
|
|
|
|
/**
|
|
* Views are packed in a checkerboard-like structure per pixel.
|
|
*
|
|
* @code{.unparsed}
|
|
* LRLRLRLR
|
|
* RLRLRLRL
|
|
* LRLRLRLR
|
|
* ...
|
|
* @endcode
|
|
*/
|
|
AV_STEREO3D_CHECKERBOARD,
|
|
|
|
/**
|
|
* Views are next to each other, but when upscaling
|
|
* apply a checkerboard pattern.
|
|
*
|
|
* @code{.unparsed}
|
|
* LLLLRRRR L L L L R R R R
|
|
* LLLLRRRR => L L L L R R R R
|
|
* LLLLRRRR L L L L R R R R
|
|
* LLLLRRRR L L L L R R R R
|
|
* @endcode
|
|
*/
|
|
AV_STEREO3D_SIDEBYSIDE_QUINCUNX,
|
|
|
|
/**
|
|
* Views are packed per line, as if interlaced.
|
|
*
|
|
* @code{.unparsed}
|
|
* LLLLLLLL
|
|
* RRRRRRRR
|
|
* LLLLLLLL
|
|
* ...
|
|
* @endcode
|
|
*/
|
|
AV_STEREO3D_LINES,
|
|
|
|
/**
|
|
* Views are packed per column.
|
|
*
|
|
* @code{.unparsed}
|
|
* LRLRLRLR
|
|
* LRLRLRLR
|
|
* LRLRLRLR
|
|
* ...
|
|
* @endcode
|
|
*/
|
|
AV_STEREO3D_COLUMNS,
|
|
|
|
/**
|
|
* Video is stereoscopic but the packing is unspecified.
|
|
*/
|
|
AV_STEREO3D_UNSPEC,
|
|
};
|
|
|
|
/**
|
|
* List of possible view types.
|
|
*/
|
|
enum AVStereo3DView {
|
|
/**
|
|
* Frame contains two packed views.
|
|
*/
|
|
AV_STEREO3D_VIEW_PACKED,
|
|
|
|
/**
|
|
* Frame contains only the left view.
|
|
*/
|
|
AV_STEREO3D_VIEW_LEFT,
|
|
|
|
/**
|
|
* Frame contains only the right view.
|
|
*/
|
|
AV_STEREO3D_VIEW_RIGHT,
|
|
|
|
/**
|
|
* Content is unspecified.
|
|
*/
|
|
AV_STEREO3D_VIEW_UNSPEC,
|
|
};
|
|
|
|
/**
|
|
* List of possible primary eyes.
|
|
*/
|
|
enum AVStereo3DPrimaryEye {
|
|
/**
|
|
* Neither eye.
|
|
*/
|
|
AV_PRIMARY_EYE_NONE,
|
|
|
|
/**
|
|
* Left eye.
|
|
*/
|
|
AV_PRIMARY_EYE_LEFT,
|
|
|
|
/**
|
|
* Right eye
|
|
*/
|
|
AV_PRIMARY_EYE_RIGHT,
|
|
};
|
|
|
|
/**
|
|
* Inverted views, Right/Bottom represents the left view.
|
|
*/
|
|
#define AV_STEREO3D_FLAG_INVERT (1 << 0)
|
|
|
|
/**
|
|
* Stereo 3D type: this structure describes how two videos are packed
|
|
* within a single video surface, with additional information as needed.
|
|
*
|
|
* @note The struct must be allocated with av_stereo3d_alloc() and
|
|
* its size is not a part of the public ABI.
|
|
*/
|
|
typedef struct AVStereo3D {
|
|
/**
|
|
* How views are packed within the video.
|
|
*/
|
|
enum AVStereo3DType type;
|
|
|
|
/**
|
|
* Additional information about the frame packing.
|
|
*/
|
|
int flags;
|
|
|
|
/**
|
|
* Determines which views are packed.
|
|
*/
|
|
enum AVStereo3DView view;
|
|
|
|
/**
|
|
* Which eye is the primary eye when rendering in 2D.
|
|
*/
|
|
enum AVStereo3DPrimaryEye primary_eye;
|
|
|
|
/**
|
|
* The distance between the centres of the lenses of the camera system,
|
|
* in micrometers. Zero if unset.
|
|
*/
|
|
uint32_t baseline;
|
|
|
|
/**
|
|
* Relative shift of the left and right images, which changes the zero parallax plane.
|
|
* Range is -1.0 to 1.0. Zero if unset.
|
|
*/
|
|
AVRational horizontal_disparity_adjustment;
|
|
|
|
/**
|
|
* Horizontal field of view, in degrees. Zero if unset.
|
|
*/
|
|
AVRational horizontal_field_of_view;
|
|
} AVStereo3D;
|
|
|
|
/**
|
|
* Allocate an AVStereo3D structure and set its fields to default values.
|
|
* The resulting struct can be freed using av_freep().
|
|
*
|
|
* @return An AVStereo3D filled with default values or NULL on failure.
|
|
*/
|
|
AVStereo3D *av_stereo3d_alloc(void);
|
|
|
|
/**
|
|
* Allocate an AVStereo3D structure and set its fields to default values.
|
|
* The resulting struct can be freed using av_freep().
|
|
*
|
|
* @return An AVStereo3D filled with default values or NULL on failure.
|
|
*/
|
|
AVStereo3D *av_stereo3d_alloc_size(size_t *size);
|
|
|
|
/**
|
|
* Allocate a complete AVFrameSideData and add it to the frame.
|
|
*
|
|
* @param frame The frame which side data is added to.
|
|
*
|
|
* @return The AVStereo3D structure to be filled by caller.
|
|
*/
|
|
AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame);
|
|
|
|
/**
|
|
* Provide a human-readable name of a given stereo3d type.
|
|
*
|
|
* @param type The input stereo3d type value.
|
|
*
|
|
* @return The name of the stereo3d value, or "unknown".
|
|
*/
|
|
const char *av_stereo3d_type_name(unsigned int type);
|
|
|
|
/**
|
|
* Get the AVStereo3DType form a human-readable name.
|
|
*
|
|
* @param name The input string.
|
|
*
|
|
* @return The AVStereo3DType value, or -1 if not found.
|
|
*/
|
|
int av_stereo3d_from_name(const char *name);
|
|
|
|
/**
|
|
* Provide a human-readable name of a given stereo3d view.
|
|
*
|
|
* @param type The input stereo3d view value.
|
|
*
|
|
* @return The name of the stereo3d view value, or "unknown".
|
|
*/
|
|
const char *av_stereo3d_view_name(unsigned int view);
|
|
|
|
/**
|
|
* Get the AVStereo3DView form a human-readable name.
|
|
*
|
|
* @param name The input string.
|
|
*
|
|
* @return The AVStereo3DView value, or -1 if not found.
|
|
*/
|
|
int av_stereo3d_view_from_name(const char *name);
|
|
|
|
/**
|
|
* Provide a human-readable name of a given stereo3d primary eye.
|
|
*
|
|
* @param type The input stereo3d primary eye value.
|
|
*
|
|
* @return The name of the stereo3d primary eye value, or "unknown".
|
|
*/
|
|
const char *av_stereo3d_primary_eye_name(unsigned int eye);
|
|
|
|
/**
|
|
* Get the AVStereo3DPrimaryEye form a human-readable name.
|
|
*
|
|
* @param name The input string.
|
|
*
|
|
* @return The AVStereo3DPrimaryEye value, or -1 if not found.
|
|
*/
|
|
int av_stereo3d_primary_eye_from_name(const char *name);
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* AVUTIL_STEREO3D_H */
|