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 <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 "idctdsp_arm.h" 30 31void ff_j_rev_dct_arm(int16_t *data); 32void ff_simple_idct_arm(int16_t *data); 33 34/* XXX: local hack */ 35static void (*ff_put_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size); 36static void (*ff_add_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size); 37 38void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest, 39 int line_size); 40 41/* XXX: those functions should be suppressed ASAP when all IDCTs are 42 * converted */ 43static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block) 44{ 45 ff_j_rev_dct_arm(block); 46 ff_put_pixels_clamped(block, dest, line_size); 47} 48 49static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block) 50{ 51 ff_j_rev_dct_arm(block); 52 ff_add_pixels_clamped(block, dest, line_size); 53} 54 55static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block) 56{ 57 ff_simple_idct_arm(block); 58 ff_put_pixels_clamped(block, dest, line_size); 59} 60 61static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block) 62{ 63 ff_simple_idct_arm(block); 64 ff_add_pixels_clamped(block, dest, line_size); 65} 66 67av_cold void ff_idctdsp_init_arm(IDCTDSPContext *c, AVCodecContext *avctx, 68 unsigned high_bit_depth) 69{ 70 int cpu_flags = av_get_cpu_flags(); 71 72 ff_put_pixels_clamped = c->put_pixels_clamped; 73 ff_add_pixels_clamped = c->add_pixels_clamped; 74 75 if (!avctx->lowres && !high_bit_depth) { 76 if (avctx->idct_algo == FF_IDCT_AUTO || 77 avctx->idct_algo == FF_IDCT_ARM) { 78 c->idct_put = j_rev_dct_arm_put; 79 c->idct_add = j_rev_dct_arm_add; 80 c->idct = ff_j_rev_dct_arm; 81 c->idct_permutation_type = FF_LIBMPEG2_IDCT_PERM; 82 } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM) { 83 c->idct_put = simple_idct_arm_put; 84 c->idct_add = simple_idct_arm_add; 85 c->idct = ff_simple_idct_arm; 86 c->idct_permutation_type = FF_NO_IDCT_PERM; 87 } 88 } 89 90 c->add_pixels_clamped = ff_add_pixels_clamped_arm; 91 92 if (have_armv5te(cpu_flags)) 93 ff_idctdsp_init_armv5te(c, avctx, high_bit_depth); 94 if (have_armv6(cpu_flags)) 95 ff_idctdsp_init_armv6(c, avctx, high_bit_depth); 96 if (have_neon(cpu_flags)) 97 ff_idctdsp_init_neon(c, avctx, high_bit_depth); 98} 99