modules/arm_neon/chroma_neon.h

   1 /*****************************************************************************
   2  * chroma_neon.h
   3  *****************************************************************************
   4  * Copyright (C) 2011 Rémi Denis-Courmont
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20
  21 /* Planes must start on a 16-bytes boundary. Pitches must be multiples of 16
  22  * bytes even for subsampled components. */
  23
  24 /* Planar picture buffer.
  25  * Pitch corresponds to luminance component in bytes. Chrominance pitches are
  26  * inferred from the color subsampling ratio. */
  27 struct yuv_planes
  28 {
  29         void *y, *u, *v;
  30         size_t pitch;
  31 };
  32
  33 /* Packed picture buffer. Pitch is in bytes (_not_ pixels). */
  34 struct yuv_pack
  35 {
  36         void *yuv;
  37         size_t pitch;
  38 };
  39
  40 /* I420 to YUYV conversion. */
  41 void i420_yuyv_neon (struct yuv_pack *const out,
  42                      const struct yuv_planes *const in,
  43                      int width, int height);
  44
  45 /* I420 to UYVY conversion. */
  46 void i420_uyvy_neon (struct yuv_pack *const out,
  47                      const struct yuv_planes *const in,
  48                      int width, int height);
  49
  50 /* I422 to YUYV conversion. */
  51 void i422_yuyv_neon (struct yuv_pack *const out,
  52                      const struct yuv_planes *const in,
  53                      int width, int height);
  54
  55 /* I422 to UYVY conversion. */
  56 void i422_uyvy_neon (struct yuv_pack *const out,
  57                      const struct yuv_planes *const in,
  58                      int width, int height);
  59
  60 /* YUYV to I422 conversion. */
  61 void yuyv_i422_neon (struct yuv_planes *const out,
  62                      const struct yuv_pack *const in, int width, int height);
  63
  64 /* UYVY to I422 conversion. */
  65 void uyvy_i422_neon (struct yuv_planes *const out,
  66                      const struct yuv_pack *const in, int width, int height);