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#include "libavutil/arm/asm.S" |
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#define W1 22725 |
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#define W2 21407 |
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#define W3 19266 |
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#define W4 16383 |
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#define W5 12873 |
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#define W6 8867 |
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#define W7 4520 |
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#define ROW_SHIFT 11 |
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#define COL_SHIFT 20 |
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#define W13 (W1 | (W3 << 16)) |
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#define W26 (W2 | (W6 << 16)) |
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#define W42 (W4 | (W2 << 16)) |
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#define W42n (-W4&0xffff | (-W2 << 16)) |
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#define W46 (W4 | (W6 << 16)) |
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#define W57 (W5 | (W7 << 16)) |
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.macro idct_row shift |
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ldr lr, =W46 |
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mov r1, #(1<<(\shift-1)) |
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smlad r4, r2, ip, r1 |
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smlsd r7, r2, ip, r1 |
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ldr ip, =W13 |
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ldr r10,=W57 |
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smlad r5, r2, lr, r1 |
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smlsd r6, r2, lr, r1 |
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smuad r8, r3, ip |
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smusdx r11,r3, r10 |
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ldr lr, [r0, #12] |
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pkhtb r2, ip, r10,asr #16 |
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pkhbt r1, ip, r10,lsl #16 |
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smusdx r9, r2, r3 |
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smlad r8, lr, r10,r8 |
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smusdx r10,r3, r1 |
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ldr r3, =W42n |
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smlad r10,lr, r2, r10 |
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ldr r2, [r0, #4] |
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smlsdx r11,lr, ip, r11 |
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ldr ip, =W46 |
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smlad r9, lr, r1, r9 |
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smlad r5, r2, r3, r5 |
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smlsd r6, r2, r3, r6 |
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smlad r4, r2, ip, r4 |
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smlsd r7, r2, ip, r7 |
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.endm |
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.macro idct_row4 shift |
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ldr lr, =W46 |
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ldr r10,=W57 |
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mov r1, #(1<<(\shift-1)) |
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smlad r4, r2, ip, r1 |
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smlsd r7, r2, ip, r1 |
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ldr ip, =W13 |
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smlad r5, r2, lr, r1 |
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smlsd r6, r2, lr, r1 |
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smusdx r11,r3, r10 |
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smuad r8, r3, ip |
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pkhtb r2, ip, r10,asr #16 |
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pkhbt r1, ip, r10,lsl #16 |
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smusdx r9, r2, r3 |
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smusdx r10,r3, r1 |
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.endm |
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.macro idct_finish |
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add ip, r4, r8 |
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sub lr, r4, r8 |
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sub r4, r5, r9 |
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add r8, r5, r9 |
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add r5, r6, r10 |
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sub r9, r6, r10 |
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add r6, r7, r11 |
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sub r10,r7, r11 |
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.endm |
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.macro idct_finish_shift shift |
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add r3, r4, r8 |
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sub r2, r4, r8 |
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mov r4, r3, asr #\shift |
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mov r8, r2, asr #\shift |
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sub r3, r5, r9 |
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add r2, r5, r9 |
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mov r5, r3, asr #\shift |
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mov r9, r2, asr #\shift |
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add r3, r6, r10 |
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sub r2, r6, r10 |
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mov r6, r3, asr #\shift |
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mov r10,r2, asr #\shift |
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add r3, r7, r11 |
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sub r2, r7, r11 |
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mov r7, r3, asr #\shift |
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mov r11,r2, asr #\shift |
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.endm |
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.macro idct_finish_shift_sat shift |
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add r3, r4, r8 |
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sub ip, r4, r8 |
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usat r4, #8, r3, asr #\shift |
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usat r8, #8, ip, asr #\shift |
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sub r3, r5, r9 |
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add ip, r5, r9 |
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usat r5, #8, r3, asr #\shift |
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usat r9, #8, ip, asr #\shift |
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add r3, r6, r10 |
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sub ip, r6, r10 |
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usat r6, #8, r3, asr #\shift |
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usat r10,#8, ip, asr #\shift |
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add r3, r7, r11 |
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sub ip, r7, r11 |
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usat r7, #8, r3, asr #\shift |
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usat r11,#8, ip, asr #\shift |
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.endm |
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function idct_row_armv6 |
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push {lr} |
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ldr lr, [r0, #12] |
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ldr ip, [r0, #4] |
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ldr r3, [r0, #8] |
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ldr r2, [r0] |
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orrs lr, lr, ip |
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itt eq |
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cmpeq lr, r3 |
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cmpeq lr, r2, lsr #16 |
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beq 1f |
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push {r1} |
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ldr ip, =W42 |
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cmp lr, #0 |
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beq 2f |
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idct_row ROW_SHIFT |
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b 3f |
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2: idct_row4 ROW_SHIFT |
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3: pop {r1} |
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idct_finish_shift ROW_SHIFT |
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strh r4, [r1] |
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strh r5, [r1, #(16*2)] |
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strh r6, [r1, #(16*4)] |
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strh r7, [r1, #(16*6)] |
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strh r11,[r1, #(16*1)] |
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strh r10,[r1, #(16*3)] |
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strh r9, [r1, #(16*5)] |
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strh r8, [r1, #(16*7)] |
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pop {pc} |
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1: mov r2, r2, lsl #3 |
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strh r2, [r1] |
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strh r2, [r1, #(16*2)] |
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strh r2, [r1, #(16*4)] |
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strh r2, [r1, #(16*6)] |
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strh r2, [r1, #(16*1)] |
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strh r2, [r1, #(16*3)] |
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strh r2, [r1, #(16*5)] |
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strh r2, [r1, #(16*7)] |
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pop {pc} |
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endfunc |
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function idct_col_armv6 |
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push {r1, lr} |
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ldr r2, [r0] |
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ldr ip, =W42 |
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ldr r3, [r0, #8] |
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idct_row COL_SHIFT |
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pop {r1} |
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idct_finish_shift COL_SHIFT |
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strh r4, [r1] |
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strh r5, [r1, #(16*1)] |
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strh r6, [r1, #(16*2)] |
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strh r7, [r1, #(16*3)] |
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strh r11,[r1, #(16*4)] |
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strh r10,[r1, #(16*5)] |
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strh r9, [r1, #(16*6)] |
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strh r8, [r1, #(16*7)] |
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pop {pc} |
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endfunc |
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function idct_col_put_armv6 |
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push {r1, r2, lr} |
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ldr r2, [r0] |
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ldr ip, =W42 |
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ldr r3, [r0, #8] |
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idct_row COL_SHIFT |
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pop {r1, r2} |
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idct_finish_shift_sat COL_SHIFT |
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strb_post r4, r1, r2 |
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strb_post r5, r1, r2 |
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strb_post r6, r1, r2 |
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strb_post r7, r1, r2 |
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strb_post r11,r1, r2 |
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strb_post r10,r1, r2 |
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strb_post r9, r1, r2 |
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strb_post r8, r1, r2 |
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sub r1, r1, r2, lsl #3 |
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pop {pc} |
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endfunc |
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function idct_col_add_armv6 |
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push {r1, r2, lr} |
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ldr r2, [r0] |
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ldr ip, =W42 |
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ldr r3, [r0, #8] |
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idct_row COL_SHIFT |
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pop {r1, r2} |
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idct_finish |
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ldrb r3, [r1] |
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ldrb r7, [r1, r2] |
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ldrb r11,[r1, r2, lsl #2] |
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add ip, r3, ip, asr #COL_SHIFT |
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usat ip, #8, ip |
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add r4, r7, r4, asr #COL_SHIFT |
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strb_post ip, r1, r2 |
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ldrb ip, [r1, r2] |
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usat r4, #8, r4 |
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ldrb r11,[r1, r2, lsl #2] |
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add r5, ip, r5, asr #COL_SHIFT |
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usat r5, #8, r5 |
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strb_post r4, r1, r2 |
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ldrb r3, [r1, r2] |
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ldrb ip, [r1, r2, lsl #2] |
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strb_post r5, r1, r2 |
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ldrb r7, [r1, r2] |
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ldrb r4, [r1, r2, lsl #2] |
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add r6, r3, r6, asr #COL_SHIFT |
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usat r6, #8, r6 |
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add r10,r7, r10,asr #COL_SHIFT |
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usat r10,#8, r10 |
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add r9, r11,r9, asr #COL_SHIFT |
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usat r9, #8, r9 |
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add r8, ip, r8, asr #COL_SHIFT |
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usat r8, #8, r8 |
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add lr, r4, lr, asr #COL_SHIFT |
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usat lr, #8, lr |
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strb_post r6, r1, r2 |
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strb_post r10,r1, r2 |
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strb_post r9, r1, r2 |
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strb_post r8, r1, r2 |
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strb_post lr, r1, r2 |
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sub r1, r1, r2, lsl #3 |
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pop {pc} |
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endfunc |
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.macro idct_rows func width |
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bl \func |
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add r0, r0, #(16*2) |
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add r1, r1, #\width |
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bl \func |
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add r0, r0, #(16*2) |
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add r1, r1, #\width |
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bl \func |
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add r0, r0, #(16*2) |
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add r1, r1, #\width |
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bl \func |
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sub r0, r0, #(16*5) |
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add r1, r1, #\width |
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bl \func |
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add r0, r0, #(16*2) |
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add r1, r1, #\width |
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bl \func |
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add r0, r0, #(16*2) |
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add r1, r1, #\width |
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bl \func |
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add r0, r0, #(16*2) |
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add r1, r1, #\width |
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bl \func |
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sub r0, r0, #(16*7) |
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.endm |
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function ff_simple_idct_armv6, export=1 |
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push {r4-r11, lr} |
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sub sp, sp, #128 |
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mov r1, sp |
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idct_rows idct_row_armv6, 2 |
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mov r1, r0 |
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mov r0, sp |
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idct_rows idct_col_armv6, 2 |
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add sp, sp, #128 |
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pop {r4-r11, pc} |
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endfunc |
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function ff_simple_idct_add_armv6, export=1 |
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push {r0, r1, r4-r11, lr} |
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sub sp, sp, #128 |
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mov r0, r2 |
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mov r1, sp |
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idct_rows idct_row_armv6, 2 |
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mov r0, sp |
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ldr r1, [sp, #128] |
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ldr r2, [sp, #(128+4)] |
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idct_rows idct_col_add_armv6, 1 |
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add sp, sp, #(128+8) |
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pop {r4-r11, pc} |
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endfunc |
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function ff_simple_idct_put_armv6, export=1 |
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push {r0, r1, r4-r11, lr} |
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sub sp, sp, #128 |
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mov r0, r2 |
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mov r1, sp |
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idct_rows idct_row_armv6, 2 |
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mov r0, sp |
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ldr r1, [sp, #128] |
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ldr r2, [sp, #(128+4)] |
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idct_rows idct_col_put_armv6, 1 |
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add sp, sp, #(128+8) |
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pop {r4-r11, pc} |
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endfunc |
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