| 1 | /* |
| 2 | * (C) GraÅžvydas "notaz" Ignotas, 2011 |
| 3 | * |
| 4 | * This work is licensed under the terms of any of these licenses |
| 5 | * (at your option): |
| 6 | * - GNU GPL, version 2 or later. |
| 7 | * - GNU LGPL, version 2.1 or later. |
| 8 | * See the COPYING file in the top-level directory. |
| 9 | */ |
| 10 | |
| 11 | |
| 12 | .text |
| 13 | .align 2 |
| 14 | |
| 15 | |
| 16 | .global mix_chan @ (int start, int count, int lv, int rv) |
| 17 | mix_chan: |
| 18 | vmov.32 d14[0], r2 |
| 19 | vmov.32 d14[1], r3 @ multipliers |
| 20 | mov r12, r0 |
| 21 | movw r0, #:lower16:ChanBuf |
| 22 | movw r2, #:lower16:SSumLR |
| 23 | movt r0, #:upper16:ChanBuf |
| 24 | movt r2, #:upper16:SSumLR |
| 25 | add r0, r12, lsl #2 |
| 26 | add r2, r12, lsl #3 |
| 27 | 0: |
| 28 | vldmia r0!, {d0-d1} |
| 29 | vldmia r2, {d2-d5} |
| 30 | vmul.s32 d10, d14, d0[0] |
| 31 | vmul.s32 d11, d14, d0[1] |
| 32 | vmul.s32 d12, d14, d1[0] |
| 33 | vmul.s32 d13, d14, d1[1] |
| 34 | vsra.s32 q1, q5, #14 |
| 35 | vsra.s32 q2, q6, #14 |
| 36 | subs r1, #4 |
| 37 | blt mc_finish |
| 38 | vstmia r2!, {d2-d5} |
| 39 | bgt 0b |
| 40 | nop |
| 41 | bxeq lr |
| 42 | |
| 43 | mc_finish: |
| 44 | vstmia r2!, {d2} |
| 45 | cmp r1, #2 |
| 46 | vstmiage r2!, {d3} |
| 47 | cmp r1, #3 |
| 48 | vstmiage r2!, {d4} |
| 49 | bx lr |
| 50 | |
| 51 | |
| 52 | .global mix_chan_rvb @ (int start, int count, int lv, int rv) |
| 53 | mix_chan_rvb: |
| 54 | vmov.32 d14[0], r2 |
| 55 | vmov.32 d14[1], r3 @ multipliers |
| 56 | mov r12, r0 |
| 57 | movw r0, #:lower16:ChanBuf |
| 58 | movw r3, #:lower16:sRVBStart |
| 59 | movw r2, #:lower16:SSumLR |
| 60 | movt r0, #:upper16:ChanBuf |
| 61 | movt r3, #:upper16:sRVBStart |
| 62 | movt r2, #:upper16:SSumLR |
| 63 | ldr r3, [r3] |
| 64 | add r0, r12, lsl #2 |
| 65 | add r2, r12, lsl #3 |
| 66 | add r3, r12, lsl #3 |
| 67 | 0: |
| 68 | vldmia r0!, {d0-d1} |
| 69 | vldmia r2, {d2-d5} |
| 70 | vldmia r3, {d6-d9} |
| 71 | vmul.s32 d10, d14, d0[0] |
| 72 | vmul.s32 d11, d14, d0[1] |
| 73 | vmul.s32 d12, d14, d1[0] |
| 74 | vmul.s32 d13, d14, d1[1] |
| 75 | vsra.s32 q1, q5, #14 |
| 76 | vsra.s32 q2, q6, #14 |
| 77 | vsra.s32 q3, q5, #14 |
| 78 | vsra.s32 q4, q6, #14 |
| 79 | subs r1, #4 |
| 80 | blt mcr_finish |
| 81 | vstmia r2!, {d2-d5} |
| 82 | vstmia r3!, {d6-d9} |
| 83 | bgt 0b |
| 84 | nop |
| 85 | bxeq lr |
| 86 | |
| 87 | mcr_finish: |
| 88 | vstmia r2!, {d2} |
| 89 | vstmia r3!, {d6} |
| 90 | cmp r1, #2 |
| 91 | vstmiage r2!, {d3} |
| 92 | vstmiage r3!, {d7} |
| 93 | cmp r1, #3 |
| 94 | vstmiage r2!, {d4} |
| 95 | vstmiage r3!, {d8} |
| 96 | bx lr |
| 97 | |
| 98 | @ vim:filetype=armasm |