/*****************************************************************************
* vlc_es.h: Elementary stream formats descriptions
*****************************************************************************
- * Copyright (C) 1999-2001 VLC authors and VideoLAN
+ * Copyright (C) 1999-2012 VLC authors and VideoLAN
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
/* Describes the channels configuration of the samples (ie. number of
* channels which are available in the buffer, and positions). */
- uint32_t i_physical_channels;
+ uint16_t i_physical_channels;
/* Describes from which original channels, before downmixing, the
* buffer is derived. */
#define AOUT_CHAN_PHYSMASK 0xFFFF
#define AOUT_CHAN_MAX 9
+/**
+ * Picture orientation.
+ */
+typedef enum video_orientation_t
+{
+ ORIENT_TOP_LEFT = 0, /**< Top line represents top, left column left. */
+ ORIENT_TOP_RIGHT, /**< Flipped horizontally */
+ ORIENT_BOTTOM_LEFT, /**< Flipped vertically */
+ ORIENT_BOTTOM_RIGHT, /**< Rotated 180 degrees */
+ ORIENT_LEFT_TOP, /**< Transposed */
+ ORIENT_LEFT_BOTTOM, /**< Rotated 90 degrees clockwise */
+ ORIENT_RIGHT_TOP, /**< Rotated 90 degrees anti-clockwise */
+ ORIENT_RIGHT_BOTTOM, /**< Anti-transposed */
+
+ ORIENT_NORMAL = ORIENT_TOP_LEFT,
+ ORIENT_HFLIPPED = ORIENT_TOP_RIGHT,
+ ORIENT_VFLIPPED = ORIENT_BOTTOM_LEFT,
+ ORIENT_ROTATED_180 = ORIENT_BOTTOM_RIGHT,
+ ORIENT_ROTATED_270 = ORIENT_LEFT_BOTTOM,
+ ORIENT_ROTATED_90 = ORIENT_RIGHT_TOP,
+} video_orientation_t;
+/** Convert EXIF orientation to enum video_orientation_t */
+#define ORIENT_FROM_EXIF(exif) ((0x01324675U >> (4 * ((exif) - 1))) & 7)
+/** Convert enum video_orientation_t to EXIF */
+#define ORIENT_TO_EXIF(orient) ((0x12435867U >> (4 * (orient))) & 15)
+/** If the orientation is natural or mirrored */
+#define ORIENT_IS_MIRROR(orient) parity(orient)
+/** If the orientation swaps dimensions */
+#define ORIENT_IS_SWAP(orient) (((orient) & 4) != 0)
+/** Applies horizontal flip to an orientation */
+#define ORIENT_HFLIP(orient) ((orient) ^ 1)
+/** Applies vertical flip to an orientation */
+#define ORIENT_VFLIP(orient) ((orient) ^ 2)
+/** Applies horizontal flip to an orientation */
+#define ORIENT_ROTATE_180(orient) ((orient) ^ 3)
+
/**
* video format description
*/
int i_rgshift, i_lgshift;
int i_rbshift, i_lbshift;
video_palette_t *p_palette; /**< video palette from demuxer */
+ video_orientation_t orientation; /**< picture orientation */
};
/**