modules/video_chroma/copy.h

   1 /*****************************************************************************
   2  * copy.h: Fast YV12/NV12 copy
   3  *****************************************************************************
   4  * Copyright (C) 2009 Laurent Aimar
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir_AT_ videolan _DOT_ org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef VLC_VIDEOCHROMA_COPY_H_
  25 #define VLC_VIDEOCHROMA_COPY_H_
  26
  27 #include <assert.h>
  28
  29 typedef struct {
  30 # ifdef CAN_COMPILE_SSE2
  31     uint8_t *buffer;
  32     size_t  size;
  33 # endif
  34 } copy_cache_t;
  35
  36 int  CopyInitCache(copy_cache_t *cache, unsigned width);
  37 void CopyCleanCache(copy_cache_t *cache);
  38
  39 /* YUVY/RGB copies */
  40 void CopyPacked(picture_t *dst, const uint8_t *src,
  41                 const size_t src_pitch, unsigned height,
  42                 const copy_cache_t *cache);
  43
  44 /* Copy planes from NV12/NV21 to NV12/NV21 */
  45 void Copy420_SP_to_SP(picture_t *dst, const uint8_t *src[static 2],
  46                       const size_t src_pitch[static 2], unsigned height,
  47                       const copy_cache_t *cache);
  48
  49 /* Copy planes from I420/YV12 to I420/YV12 */
  50 void Copy420_P_to_P(picture_t *dst, const uint8_t *src[static 3],
  51                     const size_t src_pitch[static 3], unsigned height,
  52                     const copy_cache_t *cache);
  53
  54 /* Copy planes from I420/YV12 to NV12/NV21 */
  55 void Copy420_P_to_SP(picture_t *dst, const uint8_t *src[static 3],
  56                      const size_t src_pitch[static 3], unsigned height,
  57                      const copy_cache_t *cache);
  58
  59 /* Copy planes from NV12/NV21 to I420/YV12 */
  60 void Copy420_SP_to_P(picture_t *dst, const uint8_t *src[static 2],
  61                      const size_t src_pitch[static 2], unsigned height,
  62                      const copy_cache_t *cache);
  63
  64 /* Copy planes from I420_10 to P010. A positive bitshift value will shift bits
  65  * to the right, a negative value will shift to the left. */
  66 void Copy420_16_P_to_SP(picture_t *dst, const uint8_t *src[static 3],
  67                      const size_t src_pitch[static 3], unsigned height,
  68                      int bitshift, const copy_cache_t *cache);
  69
  70 /* Copy planes from P010 to I420_10. A positive bitshift value will shift bits
  71  * to the right, a negative value will shift to the left. */
  72 void Copy420_16_SP_to_P(picture_t *dst, const uint8_t *src[static 2],
  73                         const size_t src_pitch[static 2], unsigned height,
  74                         int bitshift, const copy_cache_t *cache);
  75
  76 /* XXX: Not optimized copy (no SEE) */
  77 void CopyFromI420_10ToP010(picture_t *dst, const uint8_t *src[static 3],
  78                            const size_t src_pitch[static 3],
  79                            unsigned height, const copy_cache_t *cache);
  80
  81 /**
  82  * This functions sets the internal plane pointers/dimensions for the given
  83  * buffer.
  84  * This is useful when mapping opaque surfaces into CPU planes.
  85  *
  86  * picture is the picture to update
  87  * data is the buffer pointer to use as the start of data for all the planes
  88  * pitch is the internal line pitch for the buffer
  89  */
  90 int picture_UpdatePlanes(picture_t *picture, uint8_t *data, unsigned pitch);
  91
  92 #endif