mirror of https://git.ffmpeg.org/ffmpeg.git
271 lines
7.2 KiB
NASM
271 lines
7.2 KiB
NASM
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;******************************************************************************
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;* software YUV to RGB converter
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;*
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;* Copyright (C) 2001-2007 Michael Niedermayer
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;* (c) 2010 Konstantin Shishkov
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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 "libavutil/x86/x86util.asm"
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SECTION_RODATA
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pw_00ff: times 4 dw 255
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pb_f8: times 8 db 248
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pb_e0: times 8 db 224
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pb_03: times 8 db 3
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pb_07: times 8 db 7
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mask_1101: dw -1, -1, 0, -1
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mask_0010: dw 0, 0, -1, 0
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mask_0110: dw 0, -1, -1, 0
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mask_1001: dw -1, 0, 0, -1
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mask_0100: dw 0, -1, 0, 0
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SECTION .text
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;-----------------------------------------------------------------------------
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;
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; YUV420/YUVA420 to RGB/BGR 15/16/24/32
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; R = Y + ((vrCoff * (v - 128)) >> 8)
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; G = Y - ((ugCoff * (u - 128) + vgCoff * (v - 128)) >> 8)
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; B = Y + ((ubCoff * (u - 128)) >> 8)
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;
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;-----------------------------------------------------------------------------
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%macro MOV_H2L 1
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psrlq %1, 32
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%endmacro
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%macro yuv2rgb_fn 3
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%if %3 == 32
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%ifidn %1, yuva
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%define parameters index, image, pu_index, pv_index, pointer_c_dither, py_2index, pa_2index
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%define GPR_num 7
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%endif
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%else
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%define parameters index, image, pu_index, pv_index, pointer_c_dither, py_2index
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%define GPR_num 6
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%endif
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%define m_green m2
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%define m_alpha m3
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%define m_y m6
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%define m_u m0
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%define m_v m1
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%ifidn %2, rgb
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%define m_red m1
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%define m_blue m0
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%else
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%define m_red m0
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%define m_blue m1
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%endif
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%define time_num 1
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%define reg_num 8
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%define y_offset [pointer_c_ditherq + 8 * 8]
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%define u_offset [pointer_c_ditherq + 9 * 8]
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%define v_offset [pointer_c_ditherq + 10 * 8]
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%define ug_coff [pointer_c_ditherq + 7 * 8]
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%define vg_coff [pointer_c_ditherq + 6 * 8]
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%define y_coff [pointer_c_ditherq + 3 * 8]
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%define ub_coff [pointer_c_ditherq + 5 * 8]
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%define vr_coff [pointer_c_ditherq + 4 * 8]
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cglobal %1_420_%2%3, GPR_num, GPR_num, reg_num, parameters
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%if ARCH_X86_64
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movsxd indexq, indexd
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%endif
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mova m_y, [py_2indexq + 2 * indexq]
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movh m_u, [pu_indexq + indexq]
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movh m_v, [pv_indexq + indexq]
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.loop0:
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pxor m4, m4
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mova m7, m6
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punpcklbw m0, m4
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punpcklbw m1, m4
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mova m2, [pw_00ff]
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pand m6, m2
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psrlw m7, 8
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psllw m0, 3
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psllw m1, 3
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psllw m6, 3
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psllw m7, 3
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psubsw m0, u_offset ; U = U - 128
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psubsw m1, v_offset ; V = V - 128
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psubw m6, y_offset
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psubw m7, y_offset
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mova m2, m0
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mova m3, m1
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pmulhw m2, ug_coff
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pmulhw m3, vg_coff
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pmulhw m6, y_coff
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pmulhw m7, y_coff
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pmulhw m0, ub_coff
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pmulhw m1, vr_coff
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paddsw m2, m3
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mova m3, m7
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mova m5, m7
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paddsw m3, m0 ; B1 B3 B5 B7 ...
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paddsw m5, m1 ; R1 R3 R5 R7 ...
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paddsw m7, m2 ; G1 G3 G4 G7 ...
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paddsw m0, m6 ; B0 B2 B4 B6 ...
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paddsw m1, m6 ; R0 R2 R4 R6 ...
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paddsw m2, m6 ; G0 G2 G4 G6 ...
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%if %3 == 24 ; PACK RGB24
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%define depth 3
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packuswb m0, m3 ; R0 R2 R4 R6 ... R1 R3 R5 R7 ...
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packuswb m1, m5 ; B0 B2 B4 B6 ... B1 B3 B5 B7 ...
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packuswb m2, m7 ; G0 G2 G4 G6 ... G1 G3 G5 G7 ...
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mova m3, m_red
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mova m6, m_blue
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MOV_H2L m_red
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punpcklbw m3, m2 ; R0 G0 R2 G2 R4 G4 R6 G6 R8 G8 ...
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punpcklbw m6, m_red ; B0 R1 B2 R3 B4 R5 B6 R7 B8 R9 ...
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mova m5, m3
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punpckhbw m2, m_blue ; G1 B1 G3 B3 G5 B5 G7 B7 G9 B9 ...
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punpcklwd m3 ,m6 ; R0 G0 B0 R1 R2 G2 B2 R3
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punpckhwd m5, m6 ; R4 G4 B4 R5 R6 G6 B6 R7
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%if cpuflag(mmxext)
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pshufw m1, m2, 0xc6
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pshufw m6, m3, 0x84
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pshufw m7, m5, 0x38
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pand m6, [mask_1101] ; R0 G0 B0 R1 -- -- R2 G2
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movq m0, m1
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pand m7, [mask_0110] ; -- -- R6 G6 B6 R7 -- --
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movq m2, m1
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pand m1, [mask_0100] ; -- -- G3 B3 -- -- -- --
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psrlq m3, 48 ; B2 R3 -- -- -- -- -- --
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pand m0, [mask_0010] ; -- -- -- -- G1 B1 -- --
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psllq m5, 32 ; -- -- -- -- R4 G4 B4 R5
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pand m2, [mask_1001] ; G5 B5 -- -- -- -- G7 B7
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por m1, m3
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por m0, m6
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por m1, m5
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por m2, m7
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movntq [imageq], m0
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movntq [imageq + 8], m1
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movntq [imageq + 16], m2
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%else ; cpuflag(mmx)
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movd [imageq], m3 ; R0 G0 R2 G2
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movd [imageq + 4], m2 ; G1 B1
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psrlq m3, 32
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psrlq m2, 16
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movd [imageq + 6], m3 ; R2 G2 B2 R3
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movd [imageq + 10], m2 ; G3 B3
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psrlq m2, 16
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movd [imageq + 12], m5 ; R4 G4 B4 R5
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movd [imageq + 16], m2 ; G5 B5
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psrlq m5, 32
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movd [imageq + 20], m2 ; -- -- G7 B7
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movd [imageq + 18], m5 ; R6 G6 B6 R7
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%endif
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%else ; PACK RGB15/16/32
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packuswb m0, m1
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packuswb m3, m5
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packuswb m2, m2
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mova m1, m0
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packuswb m7, m7
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punpcklbw m0, m3 ; B0 B1 B2 B3 ... B7
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punpckhbw m1, m3 ; R0 R1 R2 R3 ... R7
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punpcklbw m2, m7 ; G0 G1 G2 G3 ... G7
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%if %3 == 32 ; PACK RGB32
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%define depth 4
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%ifidn %1, yuv
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pcmpeqd m3, m3 ; Set alpha empty
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%else
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mova m3, [pa_2indexq + 2 * indexq] ; Load alpha
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%endif
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mova m5, m_blue
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mova m6, m_red
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punpckhbw m5, m_green
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punpcklbw m_blue, m_green
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punpckhbw m6, m_alpha
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punpcklbw m_red, m_alpha
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mova m_green, m_blue
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mova m_alpha, m5
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punpcklwd m_blue, m_red
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punpckhwd m_green, m_red
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punpcklwd m5, m6
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punpckhwd m_alpha, m6
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mova [imageq + 0], m_blue
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mova [imageq + 8 * time_num], m_green
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mova [imageq + 16 * time_num], m5
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mova [imageq + 24 * time_num], m_alpha
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%else ; PACK RGB15/16
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%define depth 2
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%define blue_dither [pointer_c_ditherq + 2 * 8]
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%define green_dither [pointer_c_ditherq + 1 * 8]
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%define red_dither [pointer_c_ditherq + 0 * 8]
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%if %3 == 15
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%define gmask pb_03
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%define isRGB15 1
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%else
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%define gmask pb_07
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%define isRGB15 0
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%endif
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paddusb m0, blue_dither
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paddusb m2, green_dither
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paddusb m1, red_dither
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pand m0, [pb_f8]
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pand m1, [pb_f8]
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mova m3, m2
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psllw m2, 3 - isRGB15
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psrlw m3, 5 + isRGB15
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psrlw m0, 3
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psrlw m1, isRGB15
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pand m2, [pb_e0]
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pand m3, [gmask]
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por m0, m2
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por m1, m3
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mova m2, m0
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punpcklbw m0, m1
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punpckhbw m2, m1
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mova [imageq], m0
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mova [imageq + 8 * time_num], m2
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%endif ; PACK RGB15/16
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%endif ; PACK RGB15/16/32
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mova m_y, [py_2indexq + 2 * indexq + 8 * time_num]
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movh m_v, [pv_indexq + indexq + 4 * time_num]
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movh m_u, [pu_indexq + indexq + 4 * time_num]
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add imageq, 8 * depth * time_num
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add indexq, 4 * time_num
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js .loop0
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REP_RET
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%endmacro
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INIT_MMX mmx
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yuv2rgb_fn yuv, rgb, 24
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yuv2rgb_fn yuv, bgr, 24
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yuv2rgb_fn yuv, rgb, 32
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yuv2rgb_fn yuv, bgr, 32
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yuv2rgb_fn yuva, rgb, 32
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yuv2rgb_fn yuva, bgr, 32
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yuv2rgb_fn yuv, rgb, 15
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yuv2rgb_fn yuv, rgb, 16
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INIT_MMX mmxext
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yuv2rgb_fn yuv, rgb, 24
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yuv2rgb_fn yuv, bgr, 24
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