Libav
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 Libav.
6  *
7  * Libav 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  * Libav 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 Libav; 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 /* XXX: local hack */
33 static void (*ff_put_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
34 static void (*ff_add_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
35 
36 void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest,
37  int line_size);
38 
39 /* XXX: those functions should be suppressed ASAP when all IDCTs are
40  * converted */
41 static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block)
42 {
43  ff_j_rev_dct_arm(block);
44  ff_put_pixels_clamped(block, dest, line_size);
45 }
46 
47 static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block)
48 {
49  ff_j_rev_dct_arm(block);
50  ff_add_pixels_clamped(block, dest, line_size);
51 }
52 
53 static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block)
54 {
55  ff_simple_idct_arm(block);
56  ff_put_pixels_clamped(block, dest, line_size);
57 }
58 
59 static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block)
60 {
61  ff_simple_idct_arm(block);
62  ff_add_pixels_clamped(block, dest, line_size);
63 }
64 
66  unsigned high_bit_depth)
67 {
68  int cpu_flags = av_get_cpu_flags();
69 
72 
73  if (!high_bit_depth) {
74  if (avctx->idct_algo == FF_IDCT_AUTO ||
75  avctx->idct_algo == FF_IDCT_ARM) {
80  } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM) {
85  }
86  }
87 
89 
90  if (have_armv5te(cpu_flags))
91  ff_idctdsp_init_armv5te(c, avctx, high_bit_depth);
92  if (have_armv6(cpu_flags))
93  ff_idctdsp_init_armv6(c, avctx, high_bit_depth);
94  if (have_neon(cpu_flags))
95  ff_idctdsp_init_neon(c, avctx, high_bit_depth);
96 }
void ff_simple_idct_arm(int16_t *data)
static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block)
#define have_armv6(flags)
Definition: cpu.h:27
void ff_idctdsp_init_neon(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
void(* add_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size)
Definition: idctdsp.h:59
Macro definitions for various function/variable attributes.
static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block)
uint8_t
#define av_cold
Definition: attributes.h:66
#define have_armv5te(flags)
Definition: cpu.h:26
#define FF_IDCT_ARM
Definition: avcodec.h:2472
#define FF_IDCT_AUTO
Definition: avcodec.h:2468
#define FF_IDCT_SIMPLEARM
Definition: avcodec.h:2477
void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest, int line_size)
static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block)
static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block)
void(* put_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size)
Definition: idctdsp.h:53
void ff_j_rev_dct_arm(int16_t *data)
#define have_neon(flags)
Definition: cpu.h:27
int idct_algo
IDCT algorithm, see FF_IDCT_* below.
Definition: avcodec.h:2467
static void(* ff_add_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size)
void ff_idctdsp_init_armv5te(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
void(* idct_add)(uint8_t *dest, int line_size, int16_t *block)
block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:77
void ff_idctdsp_init_armv6(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
void(* idct_put)(uint8_t *dest, int line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:70
static void(* ff_put_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size)
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1044
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
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:47
enum idct_permutation_type perm_type
Definition: idctdsp.h:95
void(* idct)(int16_t *block)
Definition: idctdsp.h:63
static int16_t block[64]
Definition: dct-test.c:88