Commit 075acbb6 authored by Vittorio Giovara's avatar Vittorio Giovara

lavu: Add a video section to Doxygen documentation

Fill it with AVStereo3D and AVDisplayMatrix documentation.
Apply the necessary changes to make verbatim code look good in doxygen.
Signed-off-by: 's avatarVittorio Giovara <vittorio.giovara@gmail.com>
parent 624aa8ab
......@@ -115,6 +115,12 @@
*
* @}
*
* @defgroup lavu_video Video related
*
* @{
*
* @}
*
* @defgroup lavu_audio Audio related
*
* @{
......
......@@ -18,21 +18,37 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Display matrix
*/
#ifndef AVUTIL_DISPLAY_H
#define AVUTIL_DISPLAY_H
#include <stdint.h>
/**
* @addtogroup lavu_video
* @{
*
* @defgroup lavu_video_display Display transformation matrix functions
* @{
*/
/**
* @addtogroup lavu_video_display
* The display transformation matrix specifies an affine transformation that
* should be applied to video frames for correct presentation. It is compatible
* with the matrices stored in the ISO/IEC 14496-12 container format.
*
* The data is a 3x3 matrix represented as a 9-element array:
*
* @code{.unparsed}
* | a b u |
* (a, b, u, c, d, v, x, y, w) -> | c d v |
* | x y w |
* @endcode
*
* All numbers are stored in native endianness, as 16.16 fixed-point values,
* except for u, v and w, which are stored as 2.30 fixed-point values.
......@@ -40,15 +56,21 @@
* The transformation maps a point (p, q) in the source (pre-transformation)
* frame to the point (p', q') in the destination (post-transformation) frame as
* follows:
*
* @code{.unparsed}
* | a b u |
* (p, q, 1) . | c d v | = z * (p', q', 1)
* | x y w |
* @endcode
*
* The transformation can also be more explicitly written in components as
* follows:
*
* @code{.unparsed}
* p' = (a * p + c * q + x) / z;
* q' = (b * p + d * q + y) / z;
* z = u * p + v * q + w
* @endcode
*/
/**
......@@ -83,4 +105,9 @@ void av_display_rotation_set(int32_t matrix[9], double angle);
*/
void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip);
/**
* @}
* @}
*/
#endif /* AVUTIL_DISPLAY_H */
......@@ -18,6 +18,11 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Stereoscopic video
*/
#ifndef AVUTIL_STEREO3D_H
#define AVUTIL_STEREO3D_H
......@@ -25,6 +30,21 @@
#include "frame.h"
/**
* @addtogroup lavu_video
* @{
*
* @defgroup lavu_video_stereo3d Stereo3D types and functions
* @{
*/
/**
* @addtogroup lavu_video_stereo3d
* 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
*/
......@@ -37,41 +57,49 @@ enum AVStereo3DType {
/**
* 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,
......@@ -79,30 +107,36 @@ enum AVStereo3DType {
* 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,
};
......@@ -167,4 +201,9 @@ const char *av_stereo3d_type_name(unsigned int type);
*/
int av_stereo3d_from_name(const char *name);
/**
* @}
* @}
*/
#endif /* AVUTIL_STEREO3D_H */
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