summaryrefslogtreecommitdiffstats
path: root/media/libjpeg/simd/x86_64/jcsample-avx2.asm
diff options
context:
space:
mode:
Diffstat (limited to 'media/libjpeg/simd/x86_64/jcsample-avx2.asm')
-rw-r--r--media/libjpeg/simd/x86_64/jcsample-avx2.asm367
1 files changed, 367 insertions, 0 deletions
diff --git a/media/libjpeg/simd/x86_64/jcsample-avx2.asm b/media/libjpeg/simd/x86_64/jcsample-avx2.asm
new file mode 100644
index 0000000000..b32527aebe
--- /dev/null
+++ b/media/libjpeg/simd/x86_64/jcsample-avx2.asm
@@ -0,0 +1,367 @@
+;
+; jcsample.asm - downsampling (64-bit AVX2)
+;
+; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+; Copyright (C) 2009, 2016, D. R. Commander.
+; Copyright (C) 2015, Intel Corporation.
+; Copyright (C) 2018, Matthias Räncker.
+;
+; Based on the x86 SIMD extension for IJG JPEG library
+; Copyright (C) 1999-2006, MIYASAKA Masaru.
+; For conditions of distribution and use, see copyright notice in jsimdext.inc
+;
+; This file should be assembled with NASM (Netwide Assembler),
+; can *not* be assembled with Microsoft's MASM or any compatible
+; assembler (including Borland's Turbo Assembler).
+; NASM is available from http://nasm.sourceforge.net/ or
+; http://sourceforge.net/project/showfiles.php?group_id=6208
+
+%include "jsimdext.inc"
+
+; --------------------------------------------------------------------------
+ SECTION SEG_TEXT
+ BITS 64
+;
+; Downsample pixel values of a single component.
+; This version handles the common case of 2:1 horizontal and 1:1 vertical,
+; without smoothing.
+;
+; GLOBAL(void)
+; jsimd_h2v1_downsample_avx2(JDIMENSION image_width, int max_v_samp_factor,
+; JDIMENSION v_samp_factor,
+; JDIMENSION width_in_blocks, JSAMPARRAY input_data,
+; JSAMPARRAY output_data);
+;
+
+; r10d = JDIMENSION image_width
+; r11 = int max_v_samp_factor
+; r12d = JDIMENSION v_samp_factor
+; r13d = JDIMENSION width_in_blocks
+; r14 = JSAMPARRAY input_data
+; r15 = JSAMPARRAY output_data
+
+ align 32
+ GLOBAL_FUNCTION(jsimd_h2v1_downsample_avx2)
+
+EXTN(jsimd_h2v1_downsample_avx2):
+ push rbp
+ mov rax, rsp
+ mov rbp, rsp
+ collect_args 6
+
+ mov ecx, r13d
+ shl rcx, 3 ; imul rcx,DCTSIZE (rcx = output_cols)
+ jz near .return
+
+ mov edx, r10d
+
+ ; -- expand_right_edge
+
+ push rcx
+ shl rcx, 1 ; output_cols * 2
+ sub rcx, rdx
+ jle short .expand_end
+
+ mov rax, r11
+ test rax, rax
+ jle short .expand_end
+
+ cld
+ mov rsi, r14 ; input_data
+.expandloop:
+ push rax
+ push rcx
+
+ mov rdip, JSAMPROW [rsi]
+ add rdi, rdx
+ mov al, JSAMPLE [rdi-1]
+
+ rep stosb
+
+ pop rcx
+ pop rax
+
+ add rsi, byte SIZEOF_JSAMPROW
+ dec rax
+ jg short .expandloop
+
+.expand_end:
+ pop rcx ; output_cols
+
+ ; -- h2v1_downsample
+
+ mov eax, r12d ; rowctr
+ test eax, eax
+ jle near .return
+
+ mov rdx, 0x00010000 ; bias pattern
+ vmovd xmm7, edx
+ vpshufd xmm7, xmm7, 0x00 ; xmm7={0, 1, 0, 1, 0, 1, 0, 1}
+ vperm2i128 ymm7, ymm7, ymm7, 0 ; ymm7={xmm7, xmm7}
+ vpcmpeqw ymm6, ymm6, ymm6
+ vpsrlw ymm6, ymm6, BYTE_BIT ; ymm6={0xFF 0x00 0xFF 0x00 ..}
+
+ mov rsi, r14 ; input_data
+ mov rdi, r15 ; output_data
+.rowloop:
+ push rcx
+ push rdi
+ push rsi
+
+ mov rsip, JSAMPROW [rsi] ; inptr
+ mov rdip, JSAMPROW [rdi] ; outptr
+
+ cmp rcx, byte SIZEOF_YMMWORD
+ jae short .columnloop
+
+.columnloop_r24:
+ ; rcx can possibly be 8, 16, 24
+ cmp rcx, 24
+ jne .columnloop_r16
+ vmovdqu ymm0, YMMWORD [rsi+0*SIZEOF_YMMWORD]
+ vmovdqu xmm1, XMMWORD [rsi+1*SIZEOF_YMMWORD]
+ mov rcx, SIZEOF_YMMWORD
+ jmp short .downsample
+
+.columnloop_r16:
+ cmp rcx, 16
+ jne .columnloop_r8
+ vmovdqu ymm0, YMMWORD [rsi+0*SIZEOF_YMMWORD]
+ vpxor ymm1, ymm1, ymm1
+ mov rcx, SIZEOF_YMMWORD
+ jmp short .downsample
+
+.columnloop_r8:
+ vmovdqu xmm0, XMMWORD[rsi+0*SIZEOF_YMMWORD]
+ vpxor ymm1, ymm1, ymm1
+ mov rcx, SIZEOF_YMMWORD
+ jmp short .downsample
+
+.columnloop:
+ vmovdqu ymm0, YMMWORD [rsi+0*SIZEOF_YMMWORD]
+ vmovdqu ymm1, YMMWORD [rsi+1*SIZEOF_YMMWORD]
+
+.downsample:
+ vpsrlw ymm2, ymm0, BYTE_BIT
+ vpand ymm0, ymm0, ymm6
+ vpsrlw ymm3, ymm1, BYTE_BIT
+ vpand ymm1, ymm1, ymm6
+
+ vpaddw ymm0, ymm0, ymm2
+ vpaddw ymm1, ymm1, ymm3
+ vpaddw ymm0, ymm0, ymm7
+ vpaddw ymm1, ymm1, ymm7
+ vpsrlw ymm0, ymm0, 1
+ vpsrlw ymm1, ymm1, 1
+
+ vpackuswb ymm0, ymm0, ymm1
+ vpermq ymm0, ymm0, 0xd8
+
+ vmovdqu YMMWORD [rdi+0*SIZEOF_YMMWORD], ymm0
+
+ sub rcx, byte SIZEOF_YMMWORD ; outcol
+ add rsi, byte 2*SIZEOF_YMMWORD ; inptr
+ add rdi, byte 1*SIZEOF_YMMWORD ; outptr
+ cmp rcx, byte SIZEOF_YMMWORD
+ jae short .columnloop
+ test rcx, rcx
+ jnz near .columnloop_r24
+
+ pop rsi
+ pop rdi
+ pop rcx
+
+ add rsi, byte SIZEOF_JSAMPROW ; input_data
+ add rdi, byte SIZEOF_JSAMPROW ; output_data
+ dec rax ; rowctr
+ jg near .rowloop
+
+.return:
+ vzeroupper
+ uncollect_args 6
+ pop rbp
+ ret
+
+; --------------------------------------------------------------------------
+;
+; Downsample pixel values of a single component.
+; This version handles the standard case of 2:1 horizontal and 2:1 vertical,
+; without smoothing.
+;
+; GLOBAL(void)
+; jsimd_h2v2_downsample_avx2(JDIMENSION image_width, int max_v_samp_factor,
+; JDIMENSION v_samp_factor,
+; JDIMENSION width_in_blocks, JSAMPARRAY input_data,
+; JSAMPARRAY output_data);
+;
+
+; r10d = JDIMENSION image_width
+; r11 = int max_v_samp_factor
+; r12d = JDIMENSION v_samp_factor
+; r13d = JDIMENSION width_in_blocks
+; r14 = JSAMPARRAY input_data
+; r15 = JSAMPARRAY output_data
+
+ align 32
+ GLOBAL_FUNCTION(jsimd_h2v2_downsample_avx2)
+
+EXTN(jsimd_h2v2_downsample_avx2):
+ push rbp
+ mov rax, rsp
+ mov rbp, rsp
+ collect_args 6
+
+ mov ecx, r13d
+ shl rcx, 3 ; imul rcx,DCTSIZE (rcx = output_cols)
+ jz near .return
+
+ mov edx, r10d
+
+ ; -- expand_right_edge
+
+ push rcx
+ shl rcx, 1 ; output_cols * 2
+ sub rcx, rdx
+ jle short .expand_end
+
+ mov rax, r11
+ test rax, rax
+ jle short .expand_end
+
+ cld
+ mov rsi, r14 ; input_data
+.expandloop:
+ push rax
+ push rcx
+
+ mov rdip, JSAMPROW [rsi]
+ add rdi, rdx
+ mov al, JSAMPLE [rdi-1]
+
+ rep stosb
+
+ pop rcx
+ pop rax
+
+ add rsi, byte SIZEOF_JSAMPROW
+ dec rax
+ jg short .expandloop
+
+.expand_end:
+ pop rcx ; output_cols
+
+ ; -- h2v2_downsample
+
+ mov eax, r12d ; rowctr
+ test rax, rax
+ jle near .return
+
+ mov rdx, 0x00020001 ; bias pattern
+ vmovd xmm7, edx
+ vpcmpeqw ymm6, ymm6, ymm6
+ vpshufd xmm7, xmm7, 0x00 ; ymm7={1, 2, 1, 2, 1, 2, 1, 2}
+ vperm2i128 ymm7, ymm7, ymm7, 0
+ vpsrlw ymm6, ymm6, BYTE_BIT ; ymm6={0xFF 0x00 0xFF 0x00 ..}
+
+ mov rsi, r14 ; input_data
+ mov rdi, r15 ; output_data
+.rowloop:
+ push rcx
+ push rdi
+ push rsi
+
+ mov rdxp, JSAMPROW [rsi+0*SIZEOF_JSAMPROW] ; inptr0
+ mov rsip, JSAMPROW [rsi+1*SIZEOF_JSAMPROW] ; inptr1
+ mov rdip, JSAMPROW [rdi] ; outptr
+
+ cmp rcx, byte SIZEOF_YMMWORD
+ jae short .columnloop
+
+.columnloop_r24:
+ cmp rcx, 24
+ jne .columnloop_r16
+ vmovdqu ymm0, YMMWORD [rdx+0*SIZEOF_YMMWORD]
+ vmovdqu ymm1, YMMWORD [rsi+0*SIZEOF_YMMWORD]
+ vmovdqu xmm2, XMMWORD [rdx+1*SIZEOF_YMMWORD]
+ vmovdqu xmm3, XMMWORD [rsi+1*SIZEOF_YMMWORD]
+ mov rcx, SIZEOF_YMMWORD
+ jmp short .downsample
+
+.columnloop_r16:
+ cmp rcx, 16
+ jne .columnloop_r8
+ vmovdqu ymm0, YMMWORD [rdx+0*SIZEOF_YMMWORD]
+ vmovdqu ymm1, YMMWORD [rsi+0*SIZEOF_YMMWORD]
+ vpxor ymm2, ymm2, ymm2
+ vpxor ymm3, ymm3, ymm3
+ mov rcx, SIZEOF_YMMWORD
+ jmp short .downsample
+
+.columnloop_r8:
+ vmovdqu xmm0, XMMWORD [rdx+0*SIZEOF_XMMWORD]
+ vmovdqu xmm1, XMMWORD [rsi+0*SIZEOF_XMMWORD]
+ vpxor ymm2, ymm2, ymm2
+ vpxor ymm3, ymm3, ymm3
+ mov rcx, SIZEOF_YMMWORD
+ jmp short .downsample
+
+.columnloop:
+ vmovdqu ymm0, YMMWORD [rdx+0*SIZEOF_YMMWORD]
+ vmovdqu ymm1, YMMWORD [rsi+0*SIZEOF_YMMWORD]
+ vmovdqu ymm2, YMMWORD [rdx+1*SIZEOF_YMMWORD]
+ vmovdqu ymm3, YMMWORD [rsi+1*SIZEOF_YMMWORD]
+
+.downsample:
+ vpand ymm4, ymm0, ymm6
+ vpsrlw ymm0, ymm0, BYTE_BIT
+ vpand ymm5, ymm1, ymm6
+ vpsrlw ymm1, ymm1, BYTE_BIT
+ vpaddw ymm0, ymm0, ymm4
+ vpaddw ymm1, ymm1, ymm5
+
+ vpand ymm4, ymm2, ymm6
+ vpsrlw ymm2, ymm2, BYTE_BIT
+ vpand ymm5, ymm3, ymm6
+ vpsrlw ymm3, ymm3, BYTE_BIT
+ vpaddw ymm2, ymm2, ymm4
+ vpaddw ymm3, ymm3, ymm5
+
+ vpaddw ymm0, ymm0, ymm1
+ vpaddw ymm2, ymm2, ymm3
+ vpaddw ymm0, ymm0, ymm7
+ vpaddw ymm2, ymm2, ymm7
+ vpsrlw ymm0, ymm0, 2
+ vpsrlw ymm2, ymm2, 2
+
+ vpackuswb ymm0, ymm0, ymm2
+ vpermq ymm0, ymm0, 0xd8
+
+ vmovdqu YMMWORD [rdi+0*SIZEOF_YMMWORD], ymm0
+
+ sub rcx, byte SIZEOF_YMMWORD ; outcol
+ add rdx, byte 2*SIZEOF_YMMWORD ; inptr0
+ add rsi, byte 2*SIZEOF_YMMWORD ; inptr1
+ add rdi, byte 1*SIZEOF_YMMWORD ; outptr
+ cmp rcx, byte SIZEOF_YMMWORD
+ jae near .columnloop
+ test rcx, rcx
+ jnz near .columnloop_r24
+
+ pop rsi
+ pop rdi
+ pop rcx
+
+ add rsi, byte 2*SIZEOF_JSAMPROW ; input_data
+ add rdi, byte 1*SIZEOF_JSAMPROW ; output_data
+ dec rax ; rowctr
+ jg near .rowloop
+
+.return:
+ vzeroupper
+ uncollect_args 6
+ pop rbp
+ ret
+
+; For some reason, the OS X linker does not honor the request to align the
+; segment unless we do this.
+ align 32
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 10:31:46 +0000