mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-31 20:42:49 +08:00
d39c229e54
Some debuggers/profilers use this metadata to determine which function a given instruction is in; without it they get can confused by local labels (if you haven't stripped those). On the other hand, some tools are still confused even with this metadata. e.g. this fixes `gdb`, but not `perf`. Currently only implemented for ELF.
101 lines
2.9 KiB
NASM
101 lines
2.9 KiB
NASM
;******************************************************************************
|
|
;* x86-SIMD-optimized IDCT for prores
|
|
;* this is identical to "simple" IDCT written by Michael Niedermayer
|
|
;* except for the clip range
|
|
;*
|
|
;* Copyright (c) 2011 Ronald S. Bultje <rsbultje@gmail.com>
|
|
;* Copyright (c) 2015 Christophe Gisquet
|
|
;*
|
|
;* This file is part of FFmpeg.
|
|
;*
|
|
;* FFmpeg is free software; you can redistribute it and/or
|
|
;* modify it under the terms of the GNU Lesser General Public
|
|
;* License as published by the Free Software Foundation; either
|
|
;* version 2.1 of the License, or (at your option) any later version.
|
|
;*
|
|
;* FFmpeg is distributed in the hope that it will be useful,
|
|
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
;* Lesser General Public License for more details.
|
|
;*
|
|
;* You should have received a copy of the GNU Lesser General Public
|
|
;* License along with FFmpeg; if not, write to the Free Software
|
|
;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
;******************************************************************************
|
|
|
|
%include "libavutil/x86/x86util.asm"
|
|
|
|
%if ARCH_X86_64
|
|
|
|
SECTION_RODATA
|
|
|
|
cextern pw_2
|
|
cextern pw_16
|
|
cextern pw_1023
|
|
cextern pw_4095
|
|
pd_round_12: times 4 dd 1<<(12-1)
|
|
pd_round_15: times 4 dd 1<<(15-1)
|
|
pd_round_19: times 4 dd 1<<(19-1)
|
|
|
|
%macro CONST_DEC 3
|
|
const %1
|
|
times 4 dw %2, %3
|
|
%endmacro
|
|
|
|
%define W1sh2 22725 ; W1 = 90901 = 22725<<2 + 1
|
|
%define W2sh2 21407 ; W2 = 85627 = 21407<<2 - 1
|
|
%define W3sh2 19265 ; W3 = 77062 = 19265<<2 + 2
|
|
%define W4sh2 16384 ; W4 = 65535 = 16384<<2 - 1
|
|
%define W5sh2 12873 ; W5 = 51491 = 12873<<2 - 1
|
|
%define W6sh2 8867 ; W6 = 35468 = 8867<<2
|
|
%define W7sh2 4520 ; W7 = 18081 = 4520<<2 + 1
|
|
|
|
CONST_DEC w4_plus_w2, W4sh2, +W2sh2
|
|
CONST_DEC w4_min_w2, W4sh2, -W2sh2
|
|
CONST_DEC w4_plus_w6, W4sh2, +W6sh2
|
|
CONST_DEC w4_min_w6, W4sh2, -W6sh2
|
|
CONST_DEC w1_plus_w3, W1sh2, +W3sh2
|
|
CONST_DEC w3_min_w1, W3sh2, -W1sh2
|
|
CONST_DEC w7_plus_w3, W7sh2, +W3sh2
|
|
CONST_DEC w3_min_w7, W3sh2, -W7sh2
|
|
CONST_DEC w1_plus_w5, W1sh2, +W5sh2
|
|
CONST_DEC w5_min_w1, W5sh2, -W1sh2
|
|
CONST_DEC w5_plus_w7, W5sh2, +W7sh2
|
|
CONST_DEC w7_min_w5, W7sh2, -W5sh2
|
|
|
|
%include "libavcodec/x86/simple_idct10_template.asm"
|
|
|
|
SECTION .text
|
|
|
|
%macro idct_fn 0
|
|
cglobal simple_idct10, 1, 1, 16
|
|
IDCT_FN "", 12, "", 19
|
|
RET
|
|
|
|
cglobal simple_idct10_put, 3, 3, 16
|
|
IDCT_FN "", 12, "", 19, 0, pw_1023
|
|
RET
|
|
|
|
cglobal simple_idct12, 1, 1, 16
|
|
; coeffs are already 15bits, adding the offset would cause
|
|
; overflow in the input
|
|
IDCT_FN "", 15, pw_2, 16
|
|
RET
|
|
|
|
cglobal simple_idct12_put, 3, 3, 16
|
|
; range isn't known, so the C simple_idct range is used
|
|
; Also, using a bias on input overflows, so use the bias
|
|
; on output of the first butterfly instead
|
|
IDCT_FN "", 15, pw_2, 16, 0, pw_4095
|
|
RET
|
|
%endmacro
|
|
|
|
INIT_XMM sse2
|
|
idct_fn
|
|
%if HAVE_AVX_EXTERNAL
|
|
INIT_XMM avx
|
|
idct_fn
|
|
%endif
|
|
|
|
%endif
|