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https://github.com/FFmpeg/FFmpeg.git
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95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/*
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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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 <stddef.h>
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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, ptrdiff_t line_size,
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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, ptrdiff_t line_size,
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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, ptrdiff_t line_size,
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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, ptrdiff_t line_size,
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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 (!high_bit_depth) {
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if (avctx->idct_algo == FF_IDCT_AUTO ||
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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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