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idctdsp_init_arm.c
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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 <stdint.h>
23 
24 #include "libavutil/attributes.h"
25 #include "libavutil/cpu.h"
26 #include "libavutil/arm/cpu.h"
27 #include "libavcodec/avcodec.h"
28 #include "libavcodec/idctdsp.h"
29 #include "idct.h"
30 #include "idctdsp_arm.h"
31 
32 void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest,
33  ptrdiff_t line_size);
34 
35 /* XXX: those functions should be suppressed ASAP when all IDCTs are
36  * converted */
37 static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block)
38 {
39  ff_j_rev_dct_arm(block);
40  ff_put_pixels_clamped(block, dest, line_size);
41 }
42 
43 static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block)
44 {
45  ff_j_rev_dct_arm(block);
46  ff_add_pixels_clamped(block, dest, line_size);
47 }
48 
49 static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block)
50 {
51  ff_simple_idct_arm(block);
52  ff_put_pixels_clamped(block, dest, line_size);
53 }
54 
55 static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block)
56 {
57  ff_simple_idct_arm(block);
58  ff_add_pixels_clamped(block, dest, line_size);
59 }
60 
62  unsigned high_bit_depth)
63 {
64  int cpu_flags = av_get_cpu_flags();
65 
66  if (!avctx->lowres && !high_bit_depth) {
67  if ((avctx->idct_algo == FF_IDCT_AUTO && !(avctx->flags & CODEC_FLAG_BITEXACT)) ||
68  avctx->idct_algo == FF_IDCT_ARM) {
73  } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM) {
78  }
79  }
80 
82 
83  if (have_armv5te(cpu_flags))
84  ff_idctdsp_init_armv5te(c, avctx, high_bit_depth);
85  if (have_armv6(cpu_flags))
86  ff_idctdsp_init_armv6(c, avctx, high_bit_depth);
87  if (have_neon(cpu_flags))
88  ff_idctdsp_init_neon(c, avctx, high_bit_depth);
89 }