diff options
Diffstat (limited to 'vp8/encoder/arm/neon/fastfdct4x4_neon.asm')
| -rw-r--r-- | vp8/encoder/arm/neon/fastfdct4x4_neon.asm | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/vp8/encoder/arm/neon/fastfdct4x4_neon.asm b/vp8/encoder/arm/neon/fastfdct4x4_neon.asm deleted file mode 100644 index 1cc0bd781..000000000 --- a/vp8/encoder/arm/neon/fastfdct4x4_neon.asm +++ /dev/null @@ -1,124 +0,0 @@ -; -; Copyright (c) 2010 The WebM project authors. All Rights Reserved. -; -; Use of this source code is governed by a BSD-style license -; that can be found in the LICENSE file in the root of the source -; tree. An additional intellectual property rights grant can be found -; in the file PATENTS. All contributing project authors may -; be found in the AUTHORS file in the root of the source tree. -; - - - EXPORT |vp8_fast_fdct4x4_neon| - - ARM - REQUIRE8 - PRESERVE8 - - AREA ||.text||, CODE, READONLY, ALIGN=2 -;void vp8_fast_fdct4x4_c(short *input, short *output, int pitch); -;NOTE: -;The input *src_diff. src_diff is calculated as: -;diff_ptr[c] = src_ptr[c] - pred_ptr[c]; (in Subtract* function) -;In which *src_ptr and *pred_ptr both are unsigned char. -;Therefore, *src_diff should be in the range of [-255, 255]. -;CAUTION: -;The input values of 25th block are set in vp8_build_dcblock function, which are out of [-255, 255]. -;But, VP8 encoder only uses vp8_short_fdct4x4_c for 25th block, not vp8_fast_fdct4x4_c. That makes -;it ok for assuming *input in [-255, 255] in vp8_fast_fdct4x4_c, but not ok in vp8_short_fdct4x4_c. - -|vp8_fast_fdct4x4_neon| PROC - vld1.16 {d2}, [r0], r2 ;load input - ldr r12, _ffdct_coeff_ - vld1.16 {d3}, [r0], r2 - vld1.16 {d4}, [r0], r2 - vld1.16 {d0}, [r12] - vld1.16 {d5}, [r0], r2 - - ;First for-loop - ;transpose d2, d3, d4, d5. Then, d2=ip[0], d3=ip[1], d4=ip[2], d5=ip[3] - vtrn.32 d2, d4 - vtrn.32 d3, d5 - vtrn.16 d2, d3 - vtrn.16 d4, d5 - - vadd.s16 d6, d2, d5 ;ip[0]+ip[3] - vadd.s16 d7, d3, d4 ;ip[1]+ip[2] - vsub.s16 d8, d3, d4 ;ip[1]-ip[2] - vsub.s16 d9, d2, d5 ;ip[0]-ip[3] - vshl.i16 q3, q3, #1 ; a1, b1 - vshl.i16 q4, q4, #1 ; c1, d1 - - vadd.s16 d10, d6, d7 ;temp1 = a1 + b1 - vsub.s16 d11, d6, d7 ;temp2 = a1 - b1 - - vqdmulh.s16 q6, q5, d0[1] - vqdmulh.s16 q8, q4, d0[0] - vqdmulh.s16 q7, q4, d0[2] - - vshr.s16 q6, q6, #1 - vshr.s16 q8, q8, #1 - vshr.s16 q7, q7, #1 ;d14:temp1 = ( c1 * x_c3)>>16; d15:temp1 = (d1 * x_c3)>>16 - vadd.s16 q8, q4, q8 ;d16:temp2 = ((c1 * x_c1)>>16) + c1; d17:temp2 = ((d1 * x_c1)>>16) + d1 - - vadd.s16 d2, d10, d12 ;op[0] = ((temp1 * x_c2 )>>16) + temp1 - vadd.s16 d4, d11, d13 ;op[2] = ((temp2 * x_c2 )>>16) + temp2 - vadd.s16 d3, d14, d17 ;op[1] = temp1 + temp2 -- q is not necessary, just for protection - vsub.s16 d5, d15, d16 ;op[3] = temp1 - temp2 - - ;Second for-loop - ;transpose d2, d3, d4, d5. Then, d2=ip[0], d3=ip[4], d4=ip[8], d5=ip[12] - vtrn.32 d2, d4 - vtrn.32 d3, d5 - vtrn.16 d2, d3 - vtrn.16 d4, d5 - - vadd.s16 d6, d2, d5 ;a1 = ip[0]+ip[12] - vadd.s16 d7, d3, d4 ;b1 = ip[4]+ip[8] - vsub.s16 d8, d3, d4 ;c1 = ip[4]-ip[8] - vsub.s16 d9, d2, d5 ;d1 = ip[0]-ip[12] - - vadd.s16 d10, d6, d7 ;temp1 = a1 + b1 - vsub.s16 d11, d6, d7 ;temp2 = a1 - b1 - - - vqdmulh.s16 q6, q5, d0[1] - vqdmulh.s16 q8, q4, d0[0] - vqdmulh.s16 q7, q4, d0[2] - - vshr.s16 q6, q6, #1 - vshr.s16 q8, q8, #1 - vshr.s16 q7, q7, #1 ;d14:temp1 = ( c1 * x_c3)>>16; d15:temp1 = (d1 * x_c3)>>16 - vadd.s16 q8, q4, q8 ;d16:temp2 = ((c1 * x_c1)>>16) + c1; d17:temp2 = ((d1 * x_c1)>>16) + d1 - - vadd.s16 d2, d10, d12 ;a2 = ((temp1 * x_c2 )>>16) + temp1 - vadd.s16 d4, d11, d13 ;c2 = ((temp2 * x_c2 )>>16) + temp2 - vadd.s16 d3, d14, d17 ;b2 = temp1 + temp2 -- q is not necessary, just for protection - vsub.s16 d5, d15, d16 ;d2 = temp1 - temp2 - - vclt.s16 q3, q1, #0 - vclt.s16 q4, q2, #0 - - vsub.s16 q1, q1, q3 - vsub.s16 q2, q2, q4 - - vshr.s16 q1, q1, #1 - vshr.s16 q2, q2, #1 - - vst1.16 {q1, q2}, [r1] - - bx lr - - ENDP - -;----------------- - -_ffdct_coeff_ - DCD ffdct_coeff -ffdct_coeff -; 60547 = 0xEC83 -; 46341 = 0xB505 -; 25080 = 0x61F8 - DCD 0xB505EC83, 0x000061F8 - - END |