| |
| .arch armv7-a |
| .text |
| .global csc_ARGB8888_to_YUV420SP_NEON |
| .type csc_ARGB8888_to_YUV420SP_NEON, %function |
| csc_ARGB8888_to_YUV420SP_NEON: |
| .fnstart |
| |
| @r0 pDstY |
| @r1 pDstUV |
| @r2 pSrcRGB |
| @r3 nWidth |
| @r4 pDstY2 = pDstY + nWidth |
| @r5 pSrcRGB2 = pSrcRGB + nWidthx2 |
| @r6 temp7, nWidth16m |
| @r7 temp6, accumilator |
| @r8 temp5, nWidthTemp |
| @r9 temp4, Raw RGB565 |
| @r10 temp3, r,g,b |
| @r11 temp2, immediate operand |
| @r12 temp1, nHeight |
| @r14 temp0, debugging pointer |
| |
| .equ CACHE_LINE_SIZE, 32 |
| .equ PRE_LOAD_OFFSET, 6 |
| |
| stmfd sp!, {r4-r12,r14} @ backup registers |
| ldr r12, [sp, #40] @ load nHeight |
| @ldr r14, [sp, #44] @ load pTest |
| add r4, r0, r3 @r4: pDstY2 = pDstY + nWidth |
| add r5, r2, r3, lsl #2 @r5: pSrcRGB2 = tmpSrcRGB + nWidthx4 |
| sub r8, r3, #16 @r8: nWidthTmp = nWidth -16 |
| |
| @q0: temp1, R |
| @q1: temp2, GB |
| @q2: R |
| @q3: G |
| @q4: B |
| @q5: temp3, output |
| |
| |
| vmov.u16 q6, #66 @coefficient assignment |
| vmov.u16 q7, #129 |
| vmov.u16 q8, #25 |
| vmov.u16 q9, #0x8080 @ 128<<8 + 128 |
| |
| vmov.u16 q10, #0x1000 @ 16<<8 + 128 |
| vorr.u16 q10, #0x0080 |
| |
| vmov.u16 q11, #38 @#-38 |
| vmov.u16 q12, #74 @#-74 |
| vmov.u16 q13, #112 |
| vmov.u16 q14, #94 @#-94 |
| vmov.u16 q15, #18 @#-18 |
| |
| |
| |
| |
| LOOP_NHEIGHT2: |
| stmfd sp!, {r12} @ backup registers |
| |
| LOOP_NWIDTH16: |
| pld [r2, #(CACHE_LINE_SIZE*PRE_LOAD_OFFSET)] |
| @-------------------------------------------YUV ------------------------------------------ |
| vmov.u16 q14, #94 @#94 |
| vmov.u16 q15, #18 @#18 |
| vld4.8 {d0,d1,d2,d3}, [r2]! @loadRGB interleavely |
| vld4.8 {d4,d5,d6,d7}, [r2]! @loadRGB interleavely |
| |
| |
| vmov.u16 d8,d2 |
| vmov.u16 d9,d6 |
| vmov.u16 d10,d1 |
| vmov.u16 d11,d5 |
| vmov.u16 d12,d0 |
| vmov.u16 d13,d4 |
| |
| vand.u16 q4,#0x00FF @R |
| vand.u16 q5,#0x00FF @G |
| vand.u16 q6,#0x00FF @B |
| |
| vmov.u16 q8,q9 @ CalcU() |
| vmla.u16 q8,q6,q13 @112 * B[k] |
| vmls.u16 q8,q4,q11 @q0:U -(38 * R[k]) @128<<6+ 32 + u>>2 |
| vmls.u16 q8,q5,q12 @-(74 * G[k]) |
| vshr.u16 q8,q8, #8 @(128<<8+ 128 + u)>>8 |
| |
| vmov.u16 q7,q9 @CalcV() |
| vmla.u16 q7,q4,q13 @112 * R[k] |
| vmls.u16 q7,q5,q14 @q0:U -(94 * G[k]) @128<<6+ 32 + v>>2 |
| vmls.u16 q7,q6,q15 @-(18 * B[k]) |
| vshr.u16 q7,q7, #8 @(128<<8+ 128 + v)>>8 |
| |
| |
| vtrn.8 q8,q7 |
| vst1.8 {q8}, [r1]! @write UV component to yuv420_buffer+linear_ylanesiez |
| |
| @-------------------------------------------Y ------------------------------------------ |
| |
| vmov.u16 q14, #66 @#66 |
| vmov.u16 q15, #129 @#129 |
| vmov.u16 q8, #25 @#25 |
| |
| @CalcY_Y() |
| |
| vmul.u16 q7,q4,q14 @q0 = 66 *R[k] |
| vmla.u16 q7,q5,q15 @q0 += 129 *G[k] |
| vmla.u16 q7,q6,q8 @q0 += 25 *B[k] |
| |
| vadd.u16 q7,q7,q10 |
| vshr.u16 q7,q7, #8 |
| |
| vmov.u16 d8,d2 |
| vmov.u16 d9,d6 |
| vmov.u16 d10,d1 |
| vmov.u16 d11,d5 |
| vmov.u16 d12,d0 |
| vmov.u16 d13,d4 |
| |
| vshr.u16 q4,q4,#8 @R |
| vshr.u16 q5,q5,#8 @G |
| vshr.u16 q6,q6,#8 @B |
| |
| vmul.u16 q0,q4,q14 @q0 = 66 *R[k] |
| vmla.u16 q0,q5,q15 @q0 += 129 *G[k] |
| vmla.u16 q0,q6,q8 @q0 += 25 *B[k] |
| vadd.u16 q0,q0,q10 |
| vshr.u16 q0,q0, #8 |
| |
| vtrn.8 q7,q0 |
| vst1.8 {q7}, [r0]!@write to Y to yuv420_buffer |
| |
| |
| |
| @-------------------------------------------Y ------------------------------------------ |
| |
| @---------------------------------------------Y1------------------------------------------- |
| |
| pld [r5, #(CACHE_LINE_SIZE*PRE_LOAD_OFFSET)] |
| vld4.8 {d0,d1,d2,d3}, [r5]! @loadRGB interleavely |
| vld4.8 {d4,d5,d6,d7}, [r5]! @loadRGB interleavely |
| |
| vmov.u16 d8,d2 |
| vmov.u16 d9,d6 |
| vmov.u16 d10,d1 |
| vmov.u16 d11,d5 |
| vmov.u16 d12,d0 |
| vmov.u16 d13,d4 |
| |
| |
| vand.u16 q4,#0x00FF @R |
| vand.u16 q5,#0x00FF @G |
| vand.u16 q6,#0x00FF @B |
| |
| |
| |
| vmul.u16 q7,q4,q14 @q0 = 66 *R[k] |
| vmla.u16 q7,q5,q15 @q0 += 129 *G[k] |
| vmla.u16 q7,q6,q8 @q0 += 25 *B[k] |
| vadd.u16 q7,q7,q10 |
| vshr.u16 q7,q7, #8 |
| |
| vmov.u16 d8,d2 |
| vmov.u16 d9,d6 |
| vmov.u16 d10,d1 |
| vmov.u16 d11,d5 |
| vmov.u16 d12,d0 |
| vmov.u16 d13,d4 |
| |
| vshr.u16 q4,q4,#8 @R |
| vshr.u16 q5,q5,#8 @G |
| vshr.u16 q6,q6,#8 @B |
| |
| vmul.u16 q0,q4,q14 @q0 = 66 *R[k] |
| vmla.u16 q0,q5,q15 @q0 += 129 *G[k] |
| vmla.u16 q0,q6,q8 @q0 += 25 *B[k] |
| vadd.u16 q0,q0,q10 |
| vshr.u16 q0,q0, #8 |
| |
| vtrn.8 q7,q0 |
| vst1.8 {q7}, [r4]!@write to Y to yuv420_buffer |
| |
| subs r8,r8,#16 @nWidth16-- |
| BPL LOOP_NWIDTH16 @if nWidth16>0 |
| @-----------------------------------unaligned --------------------------------------- |
| |
| adds r8,r8,#16 @ + 16 - 2 |
| BEQ NO_UNALIGNED @in case that nWidht is multiple of 16 |
| LOOP_NWIDTH2: |
| @----------------------------------pDstRGB1--Y------------------------------------------ |
| @stmfd sp!, {r14} @backup r14 |
| |
| |
| ldr r9, [r2], #4 @loadRGB int |
| ldr r12, [r2], #4 @loadRGB int |
| |
| mov r10, r9,lsr #16 @copy to r10 |
| mov r14, r12 @copy to r10 |
| |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @R: (rgbIn[k] & 0xF800) >> 10; |
| ldr r6, =0x00FF0000 |
| and r14, r14, r6 @R: (rgbIn[k] & 0xF800) >> 10; |
| add r10,r10,r14 |
| |
| mov r11, #66 @accumilator += R*66 |
| mul r7, r10, r11 |
| |
| mov r10, r9,lsr #8 @copy to r10 |
| mov r14, r12,lsl #8 @copy to r10 |
| |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @G: |
| ldr r6, =0x00FF0000 |
| and r14, r14, r6 @G: |
| add r10,r10,r14 |
| |
| mov r11, #129 @accumilator += G *129 |
| mla r7, r10, r11, r7 |
| |
| mov r10, r9 @copy to r10 |
| mov r14, r12,lsl #16 @copy to r10 |
| |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @B |
| ldr r6, =0x00FF0000 |
| and r14, r14, r6 @B |
| add r10,r10,r14 |
| |
| mov r11, #25 @accumilator 1 -= B *25 |
| mla r7, r10, r11, r7 |
| |
| ldr r6, =0x10801080 |
| add r7, r6 |
| |
| lsr r7, #8 |
| strb r7, [r0],#1 |
| lsr r7,#16 |
| strb r7, [r0],#1 |
| @ldmfd sp!, {r14} @load r14 |
| |
| |
| @----------------------------------pDstRGB2--UV------------------------------------------ |
| |
| mov r10, r9 @copy to r10 |
| ldr r7,=0x00008080 |
| mov r12,r7 |
| |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @B: |
| |
| mov r11, #112 @accumilator += B*112 |
| mla r7, r10, r11, r7 |
| |
| |
| mov r11, #18 @accumilator -= B*18 |
| mul r11, r10, r11 |
| sub r12, r12, r11 |
| |
| |
| |
| |
| mov r10, r9, lsr #16 @copy to r10 |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @R: (rgbIn[k] & 0xF800) >> 10; |
| |
| mov r11, #38 @accumilator -= R *38 |
| mul r11, r10, r11 |
| sub r7, r7, r11 |
| |
| mov r11, #112 @accumilator = R *112 |
| mla r12, r10, r11, r12 |
| |
| mov r10, r9,lsr #8 @copy to r10 |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @G: (rgbIn[k] & 0x07E0) >> 5; |
| |
| mov r11, #74 @accumilator -= G*74 |
| mul r11, r10, r11 |
| sub r7, r7, r11 |
| |
| mov r11, #94 @accumilator -= G*94 |
| mul r11, r10, r11 |
| sub r12, r12, r11 |
| |
| lsr r7, #8 @ >>8 |
| strb r7, [r1],#1 |
| lsr r12, #8 @ >>8 |
| strb r12, [r1],#1 |
| |
| @----------------------------------pDstRGB2--Y------------------------------------------ |
| @stmfd sp!, {r14} @backup r14 |
| |
| |
| ldr r9, [r5], #4 @loadRGB int |
| ldr r12, [r5], #4 @loadRGB int |
| |
| mov r10, r9,lsr #16 @copy to r10 |
| mov r14, r12 @copy to r10 |
| |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @R: (rgbIn[k] & 0xF800) >> 10; |
| ldr r6, =0x00FF0000 |
| and r14, r14, r6 @R: (rgbIn[k] & 0xF800) >> 10; |
| add r10,r10,r14 |
| |
| mov r11, #66 @accumilator += R*66 |
| mul r7, r10, r11 |
| |
| mov r10, r9,lsr #8 @copy to r10 |
| mov r14, r12,lsl #8 @copy to r10 |
| |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @G: |
| ldr r6, =0x00FF0000 |
| and r14, r14, r6 @G: |
| add r10,r10,r14 |
| |
| mov r11, #129 @accumilator += G *129 |
| mla r7, r10, r11, r7 |
| |
| mov r10, r9 @copy to r10 |
| mov r14, r12,lsl #16 @copy to r10 |
| |
| ldr r6, =0x000000FF |
| and r10, r10, r6 @B |
| ldr r6, =0x00FF0000 |
| and r14, r14, r6 @B |
| add r10,r10,r14 |
| |
| |
| |
| |
| mov r11, #25 @accumilator 1 -= B *25 |
| mla r7, r10, r11, r7 |
| |
| ldr r6, =0x10801080 |
| add r7, r6 |
| lsr r7, #8 |
| |
| strb r7, [r4],#1 |
| lsr r7,#16 |
| strb r7, [r4],#1 |
| @ldmfd sp!, {r14} @load r14 |
| |
| |
| subs r8,r8,#2 @ nWidth2 -= 2 |
| BGT LOOP_NWIDTH2 @ if nWidth2>0 |
| |
| |
| NO_UNALIGNED: @in case that nWidht is multiple of 16 |
| |
| @----------------------------------------------------------------------------- |
| sub r8, r3, #16 @r8: nWidthTmp = nWidth -16 |
| add r0, r0, r3 @pDstY + nwidth |
| add r2, r2, r3, lsl #2 @pSrcRGB + nwidthx4 |
| add r4, r4, r3 @pDstY2 + nwidth |
| add r5, r5, r3, lsl #2 @pSrcRGB2 + nwidthx4 |
| |
| ldmfd sp!, {r12} |
| subs r12,r12,#2 @nHeight -=2 |
| BGT LOOP_NHEIGHT2 @if nHeight2>0 |
| |
| ldmfd sp!, {r4-r12,pc} @ backup registers |
| .fnend |
