summaryrefslogtreecommitdiffstats
path: root/media/libjpeg/simd/i386/jquant-sse.asm
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--media/libjpeg/simd/i386/jquant-sse.asm208
1 files changed, 208 insertions, 0 deletions
diff --git a/media/libjpeg/simd/i386/jquant-sse.asm b/media/libjpeg/simd/i386/jquant-sse.asm
new file mode 100644
index 0000000000..218adc976f
--- /dev/null
+++ b/media/libjpeg/simd/i386/jquant-sse.asm
@@ -0,0 +1,208 @@
+;
+; jquant.asm - sample data conversion and quantization (SSE & MMX)
+;
+; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+; Copyright (C) 2016, D. R. Commander.
+;
+; 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"
+%include "jdct.inc"
+
+; --------------------------------------------------------------------------
+ SECTION SEG_TEXT
+ BITS 32
+;
+; Load data into workspace, applying unsigned->signed conversion
+;
+; GLOBAL(void)
+; jsimd_convsamp_float_sse(JSAMPARRAY sample_data, JDIMENSION start_col,
+; FAST_FLOAT *workspace);
+;
+
+%define sample_data ebp + 8 ; JSAMPARRAY sample_data
+%define start_col ebp + 12 ; JDIMENSION start_col
+%define workspace ebp + 16 ; FAST_FLOAT *workspace
+
+ align 32
+ GLOBAL_FUNCTION(jsimd_convsamp_float_sse)
+
+EXTN(jsimd_convsamp_float_sse):
+ push ebp
+ mov ebp, esp
+ push ebx
+; push ecx ; need not be preserved
+; push edx ; need not be preserved
+ push esi
+ push edi
+
+ pcmpeqw mm7, mm7
+ psllw mm7, 7
+ packsswb mm7, mm7 ; mm7 = PB_CENTERJSAMPLE (0x808080..)
+
+ mov esi, JSAMPARRAY [sample_data] ; (JSAMPROW *)
+ mov eax, JDIMENSION [start_col]
+ mov edi, POINTER [workspace] ; (DCTELEM *)
+ mov ecx, DCTSIZE/2
+ alignx 16, 7
+.convloop:
+ mov ebx, JSAMPROW [esi+0*SIZEOF_JSAMPROW] ; (JSAMPLE *)
+ mov edx, JSAMPROW [esi+1*SIZEOF_JSAMPROW] ; (JSAMPLE *)
+
+ movq mm0, MMWORD [ebx+eax*SIZEOF_JSAMPLE]
+ movq mm1, MMWORD [edx+eax*SIZEOF_JSAMPLE]
+
+ psubb mm0, mm7 ; mm0=(01234567)
+ psubb mm1, mm7 ; mm1=(89ABCDEF)
+
+ punpcklbw mm2, mm0 ; mm2=(*0*1*2*3)
+ punpckhbw mm0, mm0 ; mm0=(*4*5*6*7)
+ punpcklbw mm3, mm1 ; mm3=(*8*9*A*B)
+ punpckhbw mm1, mm1 ; mm1=(*C*D*E*F)
+
+ punpcklwd mm4, mm2 ; mm4=(***0***1)
+ punpckhwd mm2, mm2 ; mm2=(***2***3)
+ punpcklwd mm5, mm0 ; mm5=(***4***5)
+ punpckhwd mm0, mm0 ; mm0=(***6***7)
+
+ psrad mm4, (DWORD_BIT-BYTE_BIT) ; mm4=(01)
+ psrad mm2, (DWORD_BIT-BYTE_BIT) ; mm2=(23)
+ cvtpi2ps xmm0, mm4 ; xmm0=(01**)
+ cvtpi2ps xmm1, mm2 ; xmm1=(23**)
+ psrad mm5, (DWORD_BIT-BYTE_BIT) ; mm5=(45)
+ psrad mm0, (DWORD_BIT-BYTE_BIT) ; mm0=(67)
+ cvtpi2ps xmm2, mm5 ; xmm2=(45**)
+ cvtpi2ps xmm3, mm0 ; xmm3=(67**)
+
+ punpcklwd mm6, mm3 ; mm6=(***8***9)
+ punpckhwd mm3, mm3 ; mm3=(***A***B)
+ punpcklwd mm4, mm1 ; mm4=(***C***D)
+ punpckhwd mm1, mm1 ; mm1=(***E***F)
+
+ psrad mm6, (DWORD_BIT-BYTE_BIT) ; mm6=(89)
+ psrad mm3, (DWORD_BIT-BYTE_BIT) ; mm3=(AB)
+ cvtpi2ps xmm4, mm6 ; xmm4=(89**)
+ cvtpi2ps xmm5, mm3 ; xmm5=(AB**)
+ psrad mm4, (DWORD_BIT-BYTE_BIT) ; mm4=(CD)
+ psrad mm1, (DWORD_BIT-BYTE_BIT) ; mm1=(EF)
+ cvtpi2ps xmm6, mm4 ; xmm6=(CD**)
+ cvtpi2ps xmm7, mm1 ; xmm7=(EF**)
+
+ movlhps xmm0, xmm1 ; xmm0=(0123)
+ movlhps xmm2, xmm3 ; xmm2=(4567)
+ movlhps xmm4, xmm5 ; xmm4=(89AB)
+ movlhps xmm6, xmm7 ; xmm6=(CDEF)
+
+ movaps XMMWORD [XMMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], xmm0
+ movaps XMMWORD [XMMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], xmm2
+ movaps XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], xmm4
+ movaps XMMWORD [XMMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], xmm6
+
+ add esi, byte 2*SIZEOF_JSAMPROW
+ add edi, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT
+ dec ecx
+ jnz near .convloop
+
+ emms ; empty MMX state
+
+ pop edi
+ pop esi
+; pop edx ; need not be preserved
+; pop ecx ; need not be preserved
+ pop ebx
+ pop ebp
+ ret
+
+; --------------------------------------------------------------------------
+;
+; Quantize/descale the coefficients, and store into coef_block
+;
+; GLOBAL(void)
+; jsimd_quantize_float_sse(JCOEFPTR coef_block, FAST_FLOAT *divisors,
+; FAST_FLOAT *workspace);
+;
+
+%define coef_block ebp + 8 ; JCOEFPTR coef_block
+%define divisors ebp + 12 ; FAST_FLOAT *divisors
+%define workspace ebp + 16 ; FAST_FLOAT *workspace
+
+ align 32
+ GLOBAL_FUNCTION(jsimd_quantize_float_sse)
+
+EXTN(jsimd_quantize_float_sse):
+ push ebp
+ mov ebp, esp
+; push ebx ; unused
+; push ecx ; unused
+; push edx ; need not be preserved
+ push esi
+ push edi
+
+ mov esi, POINTER [workspace]
+ mov edx, POINTER [divisors]
+ mov edi, JCOEFPTR [coef_block]
+ mov eax, DCTSIZE2/16
+ alignx 16, 7
+.quantloop:
+ movaps xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_FAST_FLOAT)]
+ movaps xmm1, XMMWORD [XMMBLOCK(0,1,esi,SIZEOF_FAST_FLOAT)]
+ mulps xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)]
+ mulps xmm1, XMMWORD [XMMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)]
+ movaps xmm2, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_FAST_FLOAT)]
+ movaps xmm3, XMMWORD [XMMBLOCK(1,1,esi,SIZEOF_FAST_FLOAT)]
+ mulps xmm2, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)]
+ mulps xmm3, XMMWORD [XMMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)]
+
+ movhlps xmm4, xmm0
+ movhlps xmm5, xmm1
+
+ cvtps2pi mm0, xmm0
+ cvtps2pi mm1, xmm1
+ cvtps2pi mm4, xmm4
+ cvtps2pi mm5, xmm5
+
+ movhlps xmm6, xmm2
+ movhlps xmm7, xmm3
+
+ cvtps2pi mm2, xmm2
+ cvtps2pi mm3, xmm3
+ cvtps2pi mm6, xmm6
+ cvtps2pi mm7, xmm7
+
+ packssdw mm0, mm4
+ packssdw mm1, mm5
+ packssdw mm2, mm6
+ packssdw mm3, mm7
+
+ movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0
+ movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm1
+ movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm2
+ movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm3
+
+ add esi, byte 16*SIZEOF_FAST_FLOAT
+ add edx, byte 16*SIZEOF_FAST_FLOAT
+ add edi, byte 16*SIZEOF_JCOEF
+ dec eax
+ jnz short .quantloop
+
+ emms ; empty MMX state
+
+ pop edi
+ pop esi
+; pop edx ; need not be preserved
+; pop ecx ; unused
+; pop ebx ; unused
+ pop ebp
+ 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 2024-11-11 19:32:21 +0000