git.sesse.net Git - vlc/blob - modules/arm_neon/i420_yuy2.c

   1 /*****************************************************************************
   2  * i420_yuy2.c : ARM NEONv1 YUV 4:2:0 to YUV :2:2 chroma conversion for VLC
   3  *****************************************************************************
   4  * Copyright (C) 2009 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 #ifdef HAVE_CONFIG_H
  22 # include "config.h"
  23 #endif
  24
  25 #include <vlc_common.h>
  26 #include <vlc_plugin.h>
  27 #include <vlc_filter.h>
  28 #include <vlc_cpu.h>
  29
  30 static int Open (vlc_object_t *);
  31
  32 vlc_module_begin ()
  33     set_description (N_("ARM NEON video chroma conversions"))
  34     set_capability ("video filter2", 250)
  35     set_callbacks (Open, NULL)
  36     add_requirement (NEON)
  37 vlc_module_end ()
  38
  39 void i420_yuyv_neon (uint8_t *out, const uint8_t **in,
  40                      uintptr_t pitch, uintptr_t height);
  41
  42 static void I420_YUYV (filter_t *filter, picture_t *src, picture_t *dst)
  43 {
  44     uint8_t *out = dst->p->p_pixels;
  45     const uint8_t *yuv[3] = { src->Y_PIXELS, src->U_PIXELS, src->V_PIXELS, };
  46     size_t pitch = (filter->fmt_in.video.i_width + 15) & ~15;
  47     size_t height = filter->fmt_in.video.i_height;
  48
  49     i420_yuyv_neon (out, yuv, pitch, height);
  50 }
  51
  52 void i420_uyvy_neon (uint8_t *out, const uint8_t **in,
  53                      uintptr_t pitch, uintptr_t height);
  54
  55 static void I420_UYVY (filter_t *filter, picture_t *src, picture_t *dst)
  56 {
  57     uint8_t *out = dst->p->p_pixels;
  58     const uint8_t *yuv[3] = { src->Y_PIXELS, src->U_PIXELS, src->V_PIXELS, };
  59     size_t pitch = (filter->fmt_in.video.i_width + 15) & ~15;
  60     size_t height = filter->fmt_in.video.i_height;
  61
  62     i420_yuyv_neon (out, yuv, pitch, height);
  63 }
  64
  65 VIDEO_FILTER_WRAPPER (I420_YUYV)
  66 VIDEO_FILTER_WRAPPER (I420_UYVY)
  67
  68 static int Open (vlc_object_t *obj)
  69 {
  70     filter_t *filter = (filter_t *)obj;
  71
  72     if (((filter->fmt_in.video.i_width | filter->fmt_in.video.i_height) & 1)
  73      || (filter->fmt_in.video.i_width != filter->fmt_out.video.i_width)
  74      || (filter->fmt_in.video.i_height != filter->fmt_out.video.i_height))
  75         return VLC_EGENERIC;
  76
  77     switch (filter->fmt_in.video.i_chroma)
  78     {
  79         case VLC_CODEC_YV12:
  80         case VLC_CODEC_I420:
  81             switch (filter->fmt_out.video.i_chroma)
  82             {
  83                 case VLC_CODEC_YUYV:
  84                     filter->pf_video_filter = I420_YUYV_Filter;
  85                     break;
  86                 case VLC_CODEC_UYVY:
  87                     filter->pf_video_filter = I420_UYVY_Filter;
  88                     break;
  89                 default:
  90                     return VLC_EGENERIC;
  91             }
  92             break;
  93
  94         default:
  95             return VLC_EGENERIC;
  96     }
  97     return VLC_SUCCESS;
  98 }