libavcodec/v210dec_init.h

   1 /*
   2  * V210 decoder DSP init
   3  *
   4  * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
   5  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
   6  *
   7  * This file is part of FFmpeg.
   8  *
   9  * FFmpeg is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * FFmpeg 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 GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with FFmpeg; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #ifndef AVCODEC_V210DEC_INIT_H
  25 #define AVCODEC_V210DEC_INIT_H
  26
  27 #include <stdint.h>
  28
  29 #include "config.h"
  30 #include "libavutil/attributes.h"
  31 #include "libavutil/bswap.h"
  32 #include "v210dec.h"
  33
  34 #define READ_PIXELS(a, b, c)         \
  35     do {                             \
  36         val  = av_le2ne32(*src++);   \
  37         *a++ =  val & 0x3FF;         \
  38         *b++ = (val >> 10) & 0x3FF;  \
  39         *c++ = (val >> 20) & 0x3FF;  \
  40     } while (0)
  41
  42 static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
  43 {
  44     uint32_t val;
  45
  46     for (int i = 0; i < width - 5; i += 6) {
  47         READ_PIXELS(u, y, v);
  48         READ_PIXELS(y, u, y);
  49         READ_PIXELS(v, y, u);
  50         READ_PIXELS(y, v, y);
  51     }
  52 }
  53
  54 static av_unused av_cold void ff_v210dec_init(V210DecContext *s)
  55 {
  56     s->unpack_frame = v210_planar_unpack_c;
  57 #if ARCH_X86
  58     ff_v210_x86_init(s);
  59 #endif
  60 }
  61
  62 #endif /* AVCODEC_V210DEC_INIT_H */