git.sesse.net Git - ffmpeg/blob - libavcodec/arm/idctdsp_init_arm.c

   1 /*
   2  * ARM-optimized IDCT functions
   3  * Copyright (c) 2001 Lionel Ulmer
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include <stddef.h>
  23 #include <stdint.h>
  24
  25 #include "libavutil/attributes.h"
  26 #include "libavutil/cpu.h"
  27 #include "libavutil/arm/cpu.h"
  28 #include "libavcodec/avcodec.h"
  29 #include "libavcodec/idctdsp.h"
  30 #include "idct.h"
  31 #include "idctdsp_arm.h"
  32
  33 void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest,
  34                                ptrdiff_t line_size);
  35
  36 /* XXX: those functions should be suppressed ASAP when all IDCTs are
  37  * converted */
  38 static void j_rev_dct_arm_put(uint8_t *dest, ptrdiff_t line_size,
  39                               int16_t *block)
  40 {
  41     ff_j_rev_dct_arm(block);
  42     ff_put_pixels_clamped_c(block, dest, line_size);
  43 }
  44
  45 static void j_rev_dct_arm_add(uint8_t *dest, ptrdiff_t line_size,
  46                               int16_t *block)
  47 {
  48     ff_j_rev_dct_arm(block);
  49     ff_add_pixels_clamped_arm(block, dest, line_size);
  50 }
  51
  52 static void simple_idct_arm_put(uint8_t *dest, ptrdiff_t line_size,
  53                                 int16_t *block)
  54 {
  55     ff_simple_idct_arm(block);
  56     ff_put_pixels_clamped_c(block, dest, line_size);
  57 }
  58
  59 static void simple_idct_arm_add(uint8_t *dest, ptrdiff_t line_size,
  60                                 int16_t *block)
  61 {
  62     ff_simple_idct_arm(block);
  63     ff_add_pixels_clamped_arm(block, dest, line_size);
  64 }
  65
  66 av_cold void ff_idctdsp_init_arm(IDCTDSPContext *c, AVCodecContext *avctx,
  67                                  unsigned high_bit_depth)
  68 {
  69     int cpu_flags = av_get_cpu_flags();
  70
  71     if (!avctx->lowres && !high_bit_depth) {
  72         if ((avctx->idct_algo == FF_IDCT_AUTO && !(avctx->flags & AV_CODEC_FLAG_BITEXACT)) ||
  73             avctx->idct_algo == FF_IDCT_ARM) {
  74             c->idct_put  = j_rev_dct_arm_put;
  75             c->idct_add  = j_rev_dct_arm_add;
  76             c->idct      = ff_j_rev_dct_arm;
  77             c->perm_type = FF_IDCT_PERM_LIBMPEG2;
  78         } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM) {
  79             c->idct_put  = simple_idct_arm_put;
  80             c->idct_add  = simple_idct_arm_add;
  81             c->idct      = ff_simple_idct_arm;
  82             c->perm_type = FF_IDCT_PERM_NONE;
  83         }
  84     }
  85
  86     c->add_pixels_clamped = ff_add_pixels_clamped_arm;
  87
  88     if (have_armv5te(cpu_flags))
  89         ff_idctdsp_init_armv5te(c, avctx, high_bit_depth);
  90     if (have_armv6(cpu_flags))
  91         ff_idctdsp_init_armv6(c, avctx, high_bit_depth);
  92     if (have_neon(cpu_flags))
  93         ff_idctdsp_init_neon(c, avctx, high_bit_depth);
  94 }