diff options
Diffstat (limited to 'media/libstagefright/codecs/aacenc/src/asm/ARMV5E/PrePostMDCT_v5.s')
-rw-r--r-- | media/libstagefright/codecs/aacenc/src/asm/ARMV5E/PrePostMDCT_v5.s | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/aacenc/src/asm/ARMV5E/PrePostMDCT_v5.s b/media/libstagefright/codecs/aacenc/src/asm/ARMV5E/PrePostMDCT_v5.s new file mode 100644 index 0000000..da21d5f --- /dev/null +++ b/media/libstagefright/codecs/aacenc/src/asm/ARMV5E/PrePostMDCT_v5.s @@ -0,0 +1,131 @@ +@/* +@ ** Copyright 2003-2010, VisualOn, Inc. +@ ** +@ ** Licensed under the Apache License, Version 2.0 (the "License"); +@ ** you may not use this file except in compliance with the License. +@ ** You may obtain a copy of the License at +@ ** +@ ** http://www.apache.org/licenses/LICENSE-2.0 +@ ** +@ ** Unless required by applicable law or agreed to in writing, software +@ ** distributed under the License is distributed on an "AS IS" BASIS, +@ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@ ** See the License for the specific language governing permissions and +@ ** limitations under the License. +@ */ + +@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ +@ File: PrePostMDCT_v5.s +@ +@ Content: premdct and postmdct function armv5 assemble +@ +@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ + + .section .text + .global PreMDCT + +PreMDCT: + stmdb sp!, {r4 - r11, lr} + + add r9, r0, r1, lsl #2 + sub r3, r9, #8 + + movs r1, r1, asr #2 + beq PreMDCT_END + +PreMDCT_LOOP: + ldr r8, [r2], #4 + ldr r9, [r2], #4 + + ldrd r4, [r0] + ldrd r6, [r3] + + smull r14, r11, r4, r8 @ MULHIGH(tr1, cosa) + smull r10, r12, r7, r8 @ MULHIGH(ti1, cosa) + + smull r14, r8, r7, r9 @ MULHIGH(ti1, sina) + smull r7, r10, r4, r9 @ MULHIGH(tr1, sina) + + add r11, r11, r8 @ MULHIGH(cosa, tr1) + MULHIGH(sina, ti1)@ + sub r7, r12, r10 @ MULHIGH(ti1, cosa) - MULHIGH(tr1, sina) + + ldr r8, [r2], #4 + ldr r9, [r2], #4 + + smull r14, r4, r6, r8 @ MULHIGH(tr2, cosa) + smull r10, r12, r5, r8 @ MULHIGH(ti2, cosa) + + smull r14, r8, r5, r9 @ MULHIGH(ti2, sina) + smull r5, r10, r6, r9 @ MULHIGH(tr2, sina) + + add r8, r8, r4 + sub r9, r12, r10 + + mov r6, r11 + + strd r6, [r0] + strd r8, [r3] + + subs r1, r1, #1 + sub r3, r3, #8 + add r0, r0, #8 + bne PreMDCT_LOOP + +PreMDCT_END: + ldmia sp!, {r4 - r11, pc} + @ENDP @ |PreMDCT| + + .section .text + .global PostMDCT + +PostMDCT: + stmdb sp!, {r4 - r11, lr} + + add r9, r0, r1, lsl #2 + sub r3, r9, #8 + + movs r1, r1, asr #2 + beq PostMDCT_END + +PostMDCT_LOOP: + ldr r8, [r2], #4 + ldr r9, [r2], #4 + + ldrd r4, [r0] + ldrd r6, [r3] + + smull r14, r11, r4, r8 @ MULHIGH(tr1, cosa) + smull r10, r12, r5, r8 @ MULHIGH(ti1, cosa) + + smull r14, r8, r5, r9 @ MULHIGH(ti1, sina) + smull r5, r10, r4, r9 @ MULHIGH(tr1, sina) + + add r4, r11, r8 @ MULHIGH(cosa, tr1) + MULHIGH(sina, ti1)@ + sub r11, r10, r12 @ MULHIGH(ti1, cosa) - MULHIGH(tr1, sina)@ + + ldr r8, [r2], #4 @ + ldr r9, [r2], #4 + + smull r14, r5, r6, r8 @ MULHIGH(tr2, cosa) + smull r10, r12, r7, r8 @ MULHIGH(ti2, cosa) + + smull r14, r8, r7, r9 @ MULHIGH(ti2, sina) + smull r7, r10, r6, r9 @ MULHIGH(tr2, sina) + + add r6, r8, r5 @ MULHIGH(cosb, tr2) + MULHIGH(sinb, ti2)@ + sub r5, r10, r12 @ MULHIGH(sinb, tr2) - MULHIGH(cosb, ti2)@ + + mov r7, r11 + + strd r4, [r0] + strd r6, [r3] + + subs r1, r1, #1 + sub r3, r3, #8 + add r0, r0, #8 + bne PostMDCT_LOOP + +PostMDCT_END: + ldmia sp!, {r4 - r11, pc} + @ENDP @ |PostMDCT| + .end |