git.sesse.net Git - ffmpeg/blob - libswscale/aarch64/swscale_unscaled.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include "config.h"
  20 #include "libswscale/swscale.h"
  21 #include "libswscale/swscale_internal.h"
  22 #include "libavutil/aarch64/cpu.h"
  23
  24 #define YUV_TO_RGB_TABLE                                                                    \
  25         c->yuv2rgb_v2r_coeff,                                                               \
  26         c->yuv2rgb_u2g_coeff,                                                               \
  27         c->yuv2rgb_v2g_coeff,                                                               \
  28         c->yuv2rgb_u2b_coeff,                                                               \
  29
  30 #define DECLARE_FF_YUVX_TO_RGBX_FUNCS(ifmt, ofmt)                                           \
  31 int ff_##ifmt##_to_##ofmt##_neon(int w, int h,                                              \
  32                                  uint8_t *dst, int linesize,                                \
  33                                  const uint8_t *srcY, int linesizeY,                        \
  34                                  const uint8_t *srcU, int linesizeU,                        \
  35                                  const uint8_t *srcV, int linesizeV,                        \
  36                                  const int16_t *table,                                      \
  37                                  int y_offset,                                              \
  38                                  int y_coeff);                                              \
  39                                                                                             \
  40 static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[],             \
  41                                            int srcStride[], int srcSliceY, int srcSliceH,   \
  42                                            uint8_t *dst[], int dstStride[]) {               \
  43     const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE };                                   \
  44                                                                                             \
  45     return ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH,                                 \
  46                                         dst[0] + srcSliceY * dstStride[0], dstStride[0],    \
  47                                         src[0], srcStride[0],                               \
  48                                         src[1], srcStride[1],                               \
  49                                         src[2], srcStride[2],                               \
  50                                         yuv2rgb_table,                                      \
  51                                         c->yuv2rgb_y_offset >> 6,                           \
  52                                         c->yuv2rgb_y_coeff);                                \
  53 }                                                                                           \
  54
  55 #define DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuvx)                                             \
  56 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, argb)                                                   \
  57 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, rgba)                                                   \
  58 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, abgr)                                                   \
  59 DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, bgra)                                                   \
  60
  61 DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv420p)
  62 DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv422p)
  63
  64 #define DECLARE_FF_NVX_TO_RGBX_FUNCS(ifmt, ofmt)                                            \
  65 int ff_##ifmt##_to_##ofmt##_neon(int w, int h,                                              \
  66                                  uint8_t *dst, int linesize,                                \
  67                                  const uint8_t *srcY, int linesizeY,                        \
  68                                  const uint8_t *srcC, int linesizeC,                        \
  69                                  const int16_t *table,                                      \
  70                                  int y_offset,                                              \
  71                                  int y_coeff);                                              \
  72                                                                                             \
  73 static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[],             \
  74                                            int srcStride[], int srcSliceY, int srcSliceH,   \
  75                                            uint8_t *dst[], int dstStride[]) {               \
  76     const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE };                                   \
  77                                                                                             \
  78     return ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH,                                 \
  79                                         dst[0] + srcSliceY * dstStride[0], dstStride[0],    \
  80                                         src[0], srcStride[0], src[1], srcStride[1],         \
  81                                         yuv2rgb_table,                                      \
  82                                         c->yuv2rgb_y_offset >> 6,                           \
  83                                         c->yuv2rgb_y_coeff);                                \
  84 }                                                                                           \
  85
  86 #define DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nvx)                                               \
  87 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, argb)                                                     \
  88 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, rgba)                                                     \
  89 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, abgr)                                                     \
  90 DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, bgra)                                                     \
  91
  92 DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv12)
  93 DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv21)
  94
  95 /* We need a 16 pixel width alignment. This constraint can easily be removed
  96  * for input reading but for the output which is 4-bytes per pixel (RGBA) the
  97  * assembly might be writing as much as 4*15=60 extra bytes at the end of the
  98  * line, which won't fit the 32-bytes buffer alignment. */
  99 #define SET_FF_NVX_TO_RGBX_FUNC(ifmt, IFMT, ofmt, OFMT, accurate_rnd) do {                  \
 100     if (c->srcFormat == AV_PIX_FMT_##IFMT                                                   \
 101         && c->dstFormat == AV_PIX_FMT_##OFMT                                                \
 102         && !(c->srcH & 1)                                                                   \
 103         && !(c->srcW & 15)                                                                  \
 104         && !accurate_rnd)                                                                   \
 105         c->swscale = ifmt##_to_##ofmt##_neon_wrapper;                                       \
 106 } while (0)
 107
 108 #define SET_FF_NVX_TO_ALL_RGBX_FUNC(nvx, NVX, accurate_rnd) do {                            \
 109     SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, argb, ARGB, accurate_rnd);                            \
 110     SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, rgba, RGBA, accurate_rnd);                            \
 111     SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, abgr, ABGR, accurate_rnd);                            \
 112     SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, bgra, BGRA, accurate_rnd);                            \
 113 } while (0)
 114
 115 static void get_unscaled_swscale_neon(SwsContext *c) {
 116     int accurate_rnd = c->flags & SWS_ACCURATE_RND;
 117
 118     SET_FF_NVX_TO_ALL_RGBX_FUNC(nv12, NV12, accurate_rnd);
 119     SET_FF_NVX_TO_ALL_RGBX_FUNC(nv21, NV21, accurate_rnd);
 120     SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv420p, YUV420P, accurate_rnd);
 121     SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv422p, YUV422P, accurate_rnd);
 122 }
 123
 124 void ff_get_unscaled_swscale_aarch64(SwsContext *c)
 125 {
 126     int cpu_flags = av_get_cpu_flags();
 127     if (have_neon(cpu_flags))
 128         get_unscaled_swscale_neon(c);
 129 }