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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 <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 
67  unsigned high_bit_depth)
68 {
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) {
78  } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM) {
83  }
84  }
85 
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 }
#define have_armv6(flags)
Definition: cpu.h:27
void ff_idctdsp_init_neon(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
static atomic_int cpu_flags
Definition: cpu.c:50
Macro definitions for various function/variable attributes.
static int16_t block[64]
Definition: dct.c:115
void ff_j_rev_dct_arm(int16_t *data)
uint8_t
#define av_cold
Definition: attributes.h:82
#define have_armv5te(flags)
Definition: cpu.h:26
void(* add_pixels_clamped)(const int16_t *block, uint8_t *av_restrict pixels, ptrdiff_t line_size)
Definition: idctdsp.h:61
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2719
#define FF_IDCT_ARM
Definition: avcodec.h:2688
#define FF_IDCT_AUTO
Definition: avcodec.h:2684
#define FF_IDCT_SIMPLEARM
Definition: avcodec.h:2690
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1568
void ff_simple_idct_arm(int16_t *data)
#define have_neon(flags)
Definition: cpu.h:27
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:883
int idct_algo
IDCT algorithm, see FF_IDCT_* below.
Definition: avcodec.h:2683
void ff_idctdsp_init_armv5te(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
void ff_idctdsp_init_armv6(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
void ff_put_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels, ptrdiff_t line_size)
Definition: idctdsp.c:83
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1488
static void j_rev_dct_arm_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
void(* idct_add)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:79
av_cold void ff_idctdsp_init_arm(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:92
void(* idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:72
static double c[64]
static void j_rev_dct_arm_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
static void simple_idct_arm_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
static void simple_idct_arm_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest, ptrdiff_t line_size)
enum idct_permutation_type perm_type
Definition: idctdsp.h:97
void(* idct)(int16_t *block)
Definition: idctdsp.h:65