modules/video_chroma/copy.h

   1 /*****************************************************************************
   2  * copy.h: Fast YV12/NV12 copy
   3  *****************************************************************************
   4  * Copyright (C) 2009 Laurent Aimar
   5  *
   6  * Authors: Laurent Aimar <fenrir_AT_ videolan _DOT_ org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU Lesser General Public License as published by
  10  * the Free Software Foundation; either version 2.1 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifndef VLC_VIDEOCHROMA_COPY_H_
  24 #define VLC_VIDEOCHROMA_COPY_H_
  25
  26 #include <assert.h>
  27
  28 typedef struct {
  29 # ifdef CAN_COMPILE_SSE2
  30     uint8_t *buffer;
  31     size_t  size;
  32 # else
  33     char dummy;
  34 # endif
  35 } copy_cache_t;
  36
  37 int  CopyInitCache(copy_cache_t *cache, unsigned width);
  38 void CopyCleanCache(copy_cache_t *cache);
  39
  40 /* YUVY/RGB copies */
  41 void CopyPacked(picture_t *dst, const uint8_t *src,
  42                 const size_t src_pitch, unsigned height,
  43                 const copy_cache_t *cache);
  44
  45 /* Copy planes from NV12/NV21 to NV12/NV21 */
  46 void Copy420_SP_to_SP(picture_t *dst, const uint8_t *src[static 2],
  47                       const size_t src_pitch[static 2], unsigned height,
  48                       const copy_cache_t *cache);
  49
  50 /* Copy planes from I420/YV12 to I420/YV12 */
  51 void Copy420_P_to_P(picture_t *dst, const uint8_t *src[static 3],
  52                     const size_t src_pitch[static 3], unsigned height,
  53                     const copy_cache_t *cache);
  54
  55 /* Copy planes from I420/YV12 to NV12/NV21 */
  56 void Copy420_P_to_SP(picture_t *dst, const uint8_t *src[static 3],
  57                      const size_t src_pitch[static 3], unsigned height,
  58                      const copy_cache_t *cache);
  59
  60 /* Copy planes from NV12/NV21 to I420/YV12 */
  61 void Copy420_SP_to_P(picture_t *dst, const uint8_t *src[static 2],
  62                      const size_t src_pitch[static 2], unsigned height,
  63                      const copy_cache_t *cache);
  64
  65 /* Copy planes from I420_10 to P010. A positive bitshift value will shift bits
  66  * to the right, a negative value will shift to the left. */
  67 void Copy420_16_P_to_SP(picture_t *dst, const uint8_t *src[static 3],
  68                      const size_t src_pitch[static 3], unsigned height,
  69                      int bitshift, const copy_cache_t *cache);
  70
  71 /* Copy planes from P010 to I420_10. A positive bitshift value will shift bits
  72  * to the right, a negative value will shift to the left. */
  73 void Copy420_16_SP_to_P(picture_t *dst, const uint8_t *src[static 2],
  74                         const size_t src_pitch[static 2], unsigned height,
  75                         int bitshift, const copy_cache_t *cache);
  76
  77 /**
  78  * This functions sets the internal plane pointers/dimensions for the given
  79  * buffer.
  80  * This is useful when mapping opaque surfaces into CPU planes.
  81  *
  82  * picture is the picture to update
  83  * data is the buffer pointer to use as the start of data for all the planes
  84  * pitch is the internal line pitch for the buffer
  85  */
  86 int picture_UpdatePlanes(picture_t *picture, uint8_t *data, unsigned pitch);
  87
  88 #endif