| 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 "idct.h" |
| 30 | #include "idctdsp_arm.h" |
| 31 | |
| 32 | void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest, |
| 33 | ptrdiff_t line_size); |
| 34 | |
| 35 | /* XXX: those functions should be suppressed ASAP when all IDCTs are |
| 36 | * converted */ |
| 37 | static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block) |
| 38 | { |
| 39 | ff_j_rev_dct_arm(block); |
| 40 | ff_put_pixels_clamped(block, dest, line_size); |
| 41 | } |
| 42 | |
| 43 | static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block) |
| 44 | { |
| 45 | ff_j_rev_dct_arm(block); |
| 46 | ff_add_pixels_clamped(block, dest, line_size); |
| 47 | } |
| 48 | |
| 49 | static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block) |
| 50 | { |
| 51 | ff_simple_idct_arm(block); |
| 52 | ff_put_pixels_clamped(block, dest, line_size); |
| 53 | } |
| 54 | |
| 55 | static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block) |
| 56 | { |
| 57 | ff_simple_idct_arm(block); |
| 58 | ff_add_pixels_clamped(block, dest, line_size); |
| 59 | } |
| 60 | |
| 61 | av_cold void ff_idctdsp_init_arm(IDCTDSPContext *c, AVCodecContext *avctx, |
| 62 | unsigned high_bit_depth) |
| 63 | { |
| 64 | int cpu_flags = av_get_cpu_flags(); |
| 65 | |
| 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; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | c->add_pixels_clamped = ff_add_pixels_clamped_arm; |
| 82 | |
| 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); |
| 89 | } |