2 * ARM-optimized IDCT functions
3 * Copyright (c) 2001 Lionel Ulmer
5 * This file is part of FFmpeg.
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.
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.
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
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"
30 #include "idctdsp_arm.h"
32 void ff_add_pixels_clamped_arm(const int16_t *block
, uint8_t *dest
,
35 /* XXX: those functions should be suppressed ASAP when all IDCTs are
37 static void j_rev_dct_arm_put(uint8_t *dest
, int line_size
, int16_t *block
)
39 ff_j_rev_dct_arm(block
);
40 ff_put_pixels_clamped(block
, dest
, line_size
);
43 static void j_rev_dct_arm_add(uint8_t *dest
, int line_size
, int16_t *block
)
45 ff_j_rev_dct_arm(block
);
46 ff_add_pixels_clamped(block
, dest
, line_size
);
49 static void simple_idct_arm_put(uint8_t *dest
, int line_size
, int16_t *block
)
51 ff_simple_idct_arm(block
);
52 ff_put_pixels_clamped(block
, dest
, line_size
);
55 static void simple_idct_arm_add(uint8_t *dest
, int line_size
, int16_t *block
)
57 ff_simple_idct_arm(block
);
58 ff_add_pixels_clamped(block
, dest
, line_size
);
61 av_cold
void ff_idctdsp_init_arm(IDCTDSPContext
*c
, AVCodecContext
*avctx
,
62 unsigned high_bit_depth
)
64 int cpu_flags
= av_get_cpu_flags();
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
) {
69 c
->idct_put
= j_rev_dct_arm_put
;
70 c
->idct_add
= j_rev_dct_arm_add
;
71 c
->idct
= ff_j_rev_dct_arm
;
72 c
->perm_type
= FF_IDCT_PERM_LIBMPEG2
;
73 } else if (avctx
->idct_algo
== FF_IDCT_SIMPLEARM
) {
74 c
->idct_put
= simple_idct_arm_put
;
75 c
->idct_add
= simple_idct_arm_add
;
76 c
->idct
= ff_simple_idct_arm
;
77 c
->perm_type
= FF_IDCT_PERM_NONE
;
81 c
->add_pixels_clamped
= ff_add_pixels_clamped_arm
;
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
);