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libavcodec
arm
idctdsp_init_arm.c
Go to the documentation of this file.
1
/*
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* ARM-optimized IDCT functions
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* Copyright (c) 2001 Lionel Ulmer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "
libavutil/attributes.h
"
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#include "
libavutil/cpu.h
"
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#include "
libavutil/arm/cpu.h
"
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#include "
libavcodec/avcodec.h
"
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#include "
libavcodec/idctdsp.h
"
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#include "
idct.h
"
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#include "
idctdsp_arm.h
"
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void
ff_add_pixels_clamped_arm
(
const
int16_t *
block
,
uint8_t
*dest,
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ptrdiff_t line_size);
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/* XXX: those functions should be suppressed ASAP when all IDCTs are
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* converted */
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static
void
j_rev_dct_arm_put
(
uint8_t
*dest,
int
line_size, int16_t *
block
)
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{
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ff_j_rev_dct_arm
(block);
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ff_put_pixels_clamped
(block, dest, line_size);
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}
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static
void
j_rev_dct_arm_add
(
uint8_t
*dest,
int
line_size, int16_t *
block
)
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{
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ff_j_rev_dct_arm
(block);
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ff_add_pixels_clamped
(block, dest, line_size);
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}
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static
void
simple_idct_arm_put
(
uint8_t
*dest,
int
line_size, int16_t *
block
)
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{
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ff_simple_idct_arm
(block);
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ff_put_pixels_clamped
(block, dest, line_size);
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}
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static
void
simple_idct_arm_add
(
uint8_t
*dest,
int
line_size, int16_t *
block
)
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{
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ff_simple_idct_arm
(block);
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ff_add_pixels_clamped
(block, dest, line_size);
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}
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av_cold
void
ff_idctdsp_init_arm
(
IDCTDSPContext
*
c
,
AVCodecContext
*avctx,
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unsigned
high_bit_depth)
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{
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int
cpu_flags =
av_get_cpu_flags
();
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if
(!avctx->
lowres
&& !high_bit_depth) {
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if
((avctx->
idct_algo
==
FF_IDCT_AUTO
&& !(avctx->
flags
&
CODEC_FLAG_BITEXACT
)) ||
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avctx->
idct_algo
==
FF_IDCT_ARM
) {
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c->
idct_put
=
j_rev_dct_arm_put
;
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c->
idct_add
=
j_rev_dct_arm_add
;
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c->
idct
=
ff_j_rev_dct_arm
;
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c->
perm_type
=
FF_IDCT_PERM_LIBMPEG2
;
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}
else
if
(avctx->
idct_algo
==
FF_IDCT_SIMPLEARM
) {
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c->
idct_put
=
simple_idct_arm_put
;
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c->
idct_add
=
simple_idct_arm_add
;
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c->
idct
=
ff_simple_idct_arm
;
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c->
perm_type
=
FF_IDCT_PERM_NONE
;
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}
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}
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c->
add_pixels_clamped
=
ff_add_pixels_clamped_arm
;
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if
(
have_armv5te
(cpu_flags))
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ff_idctdsp_init_armv5te
(c, avctx, high_bit_depth);
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if
(
have_armv6
(cpu_flags))
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ff_idctdsp_init_armv6
(c, avctx, high_bit_depth);
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if
(
have_neon
(cpu_flags))
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ff_idctdsp_init_neon
(c, avctx, high_bit_depth);
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}
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