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244 lines
4.9 KiB
244 lines
4.9 KiB
;
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;Copyright 2014 Jay Sorg
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;
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;Permission to use, copy, modify, distribute, and sell this software and its
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;documentation for any purpose is hereby granted without fee, provided that
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;the above copyright notice appear in all copies and that both that
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;copyright notice and this permission notice appear in supporting
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;documentation.
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;
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;The above copyright notice and this permission notice shall be included in
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;all copies or substantial portions of the Software.
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;
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;THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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;IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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;FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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;OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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;AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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;CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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;
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;I420 to RGB32
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;x86 SSE2 32 bit
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;
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; RGB to YUV
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; 0.299 0.587 0.114
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; -0.14713 -0.28886 0.436
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; 0.615 -0.51499 -0.10001
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; YUV to RGB
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; 1 0 1.13983
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; 1 -0.39465 -0.58060
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; 1 2.03211 0
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; shift left 12
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; 4096 0 4669
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; 4096 -1616 -2378
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; 4096 9324 0
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SECTION .data
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align 16
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c128 times 8 dw 128
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c4669 times 8 dw 4669
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c1616 times 8 dw 1616
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c2378 times 8 dw 2378
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c9324 times 8 dw 9324
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SECTION .text
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%macro PROC 1
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align 16
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global %1
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%1:
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%endmacro
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do8_uv:
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; v
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movd xmm1, [ebx] ; 4 at a time
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lea ebx, [ebx + 4]
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punpcklbw xmm1, xmm1
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pxor xmm6, xmm6
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punpcklbw xmm1, xmm6
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movdqa xmm7, [c128]
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psubw xmm1, xmm7
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psllw xmm1, 4
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; u
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movd xmm2, [edx] ; 4 at a time
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lea edx, [edx + 4]
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punpcklbw xmm2, xmm2
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punpcklbw xmm2, xmm6
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psubw xmm2, xmm7
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psllw xmm2, 4
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do8:
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; y
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movq xmm0, [esi] ; 8 at a time
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lea esi, [esi + 8]
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pxor xmm6, xmm6
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punpcklbw xmm0, xmm6
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; r = y + hiword(4669 * (v << 4))
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movdqa xmm4, [c4669]
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pmulhw xmm4, xmm1
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movdqa xmm3, xmm0
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paddw xmm3, xmm4
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; g = y - hiword(1616 * (u << 4)) - hiword(2378 * (v << 4))
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movdqa xmm5, [c1616]
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pmulhw xmm5, xmm2
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movdqa xmm6, [c2378]
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pmulhw xmm6, xmm1
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movdqa xmm4, xmm0
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psubw xmm4, xmm5
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psubw xmm4, xmm6
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; b = y + hiword(9324 * (u << 4))
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movdqa xmm6, [c9324]
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pmulhw xmm6, xmm2
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movdqa xmm5, xmm0
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paddw xmm5, xmm6
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packuswb xmm3, xmm3 ; b
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packuswb xmm4, xmm4 ; g
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punpcklbw xmm3, xmm4 ; gb
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pxor xmm4, xmm4 ; a
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packuswb xmm5, xmm5 ; r
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punpcklbw xmm5, xmm4 ; ar
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movdqa xmm4, xmm3
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punpcklwd xmm3, xmm5 ; argb
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movdqa [edi], xmm3
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lea edi, [edi + 16]
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punpckhwd xmm4, xmm5 ; argb
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movdqa [edi], xmm4
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lea edi, [edi + 16]
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ret;
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;int
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;i420_to_rgb32_x86_sse2(unsigned char *yuvs, int width, int height, int *rgbs)
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PROC i420_to_rgb32_x86_sse2
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push ebx
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push esi
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push edi
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push ebp
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mov edi, [esp + 32] ; rgbs
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mov ecx, [esp + 24] ; width
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mov edx, ecx
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mov ebp, [esp + 28] ; height
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mov eax, ebp
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shr ebp, 1
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imul eax, ecx ; eax = width * height
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mov esi, [esp + 20] ; y
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mov ebx, esi ; u = y + width * height
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add ebx, eax
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; local vars
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; char* yptr1
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; char* yptr2
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; char* uptr
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; char* vptr
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; int* rgbs1
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; int* rgbs2
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; int width
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sub esp, 28 ; local vars, 28 bytes
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mov [esp + 0], esi ; save y1
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add esi, edx
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mov [esp + 4], esi ; save y2
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mov [esp + 8], ebx ; save u
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shr eax, 2
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add ebx, eax ; v = u + (width * height / 4)
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mov [esp + 12], ebx ; save v
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mov [esp + 16], edi ; save rgbs1
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mov eax, edx
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shl eax, 2
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add edi, eax
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mov [esp + 20], edi ; save rgbs2
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loop_y:
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mov ecx, edx ; width
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shr ecx, 3
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; save edx
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mov [esp + 24], edx
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;prefetchnta 4096[esp + 0] ; y
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;prefetchnta 1024[esp + 8] ; u
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;prefetchnta 1024[esp + 12] ; v
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loop_x:
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mov esi, [esp + 0] ; y1
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mov ebx, [esp + 8] ; u
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mov edx, [esp + 12] ; v
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mov edi, [esp + 16] ; rgbs1
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; y1
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call do8_uv
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mov [esp + 0], esi ; y1
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mov [esp + 16], edi ; rgbs1
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mov esi, [esp + 4] ; y2
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mov edi, [esp + 20] ; rgbs2
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; y2
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call do8
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mov [esp + 4], esi ; y2
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mov [esp + 8], ebx ; u
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mov [esp + 12], edx ; v
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mov [esp + 20], edi ; rgbs2
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dec ecx ; width
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jnz loop_x
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; restore edx
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mov edx, [esp + 24]
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; update y1 and 2
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mov eax, [esp + 0]
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mov ebx, edx
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add eax, ebx
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mov [esp + 0], eax
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mov eax, [esp + 4]
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add eax, ebx
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mov [esp + 4], eax
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; update rgb1 and 2
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mov eax, [esp + 16]
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mov ebx, edx
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shl ebx, 2
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add eax, ebx
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mov [esp + 16], eax
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mov eax, [esp + 20]
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add eax, ebx
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mov [esp + 20], eax
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mov ecx, ebp
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dec ecx ; height
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mov ebp, ecx
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jnz loop_y
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add esp, 28
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mov eax, 0
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pop ebp
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pop edi
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pop esi
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pop ebx
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ret
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align 16
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