source/libvpx/vp8/common/arm/neon/idct_dequant_0_2x_neon.asm - Issue 554673004: libvpx: Pull from upstream

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Side by Side Diff: source/libvpx/vp8/common/arm/neon/idct_dequant_0_2x_neon.asm

Issue 554673004: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/

Patch Set: Created 6 years, 3 months ago

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1 ;

2 ; Copyright (c) 2010 The WebM project authors. All Rights Reserved.

3 ;

4 ; Use of this source code is governed by a BSD-style license and patent

5 ; grant that can be found in the LICENSE file in the root of the source

6 ; tree. All contributing project authors may be found in the AUTHORS

7 ; file in the root of the source tree.

8 ;

9

10

11 EXPORT \|idct_dequant_0_2x_neon\|

12 ARM

13 REQUIRE8

14 PRESERVE8

15

16 AREA \|\|.text\|\|, CODE, READONLY, ALIGN=2

17 ;void idct_dequant_0_2x_neon(short *q, short dq,

18 ; unsigned char *dst, int stride);

19 ; r0 *q

20 ; r1 dq

21 ; r2 *dst

22 ; r3 stride

23 \|idct_dequant_0_2x_neon\| PROC

24 push {r4, r5}

25 vpush {d8-d15}

26

27 add r12, r2, #4

28 vld1.32 {d2[0]}, [r2], r3

29 vld1.32 {d8[0]}, [r12], r3

30 vld1.32 {d2[1]}, [r2], r3

31 vld1.32 {d8[1]}, [r12], r3

32 vld1.32 {d4[0]}, [r2], r3

33 vld1.32 {d10[0]}, [r12], r3

34 vld1.32 {d4[1]}, [r2], r3

35 vld1.32 {d10[1]}, [r12], r3

36

37 ldrh r12, [r0] ; lo q

38 ldrh r4, [r0, #32] ; hi q

39 mov r5, #0

40 strh r5, [r0]

41 strh r5, [r0, #32]

42

43 sxth r12, r12 ; lo

44 mul r0, r12, r1

45 add r0, r0, #4

46 asr r0, r0, #3

47 vdup.16 q0, r0

48 sxth r4, r4 ; hi

49 mul r0, r4, r1

50 add r0, r0, #4

51 asr r0, r0, #3

52 vdup.16 q3, r0

53

54 vaddw.u8 q1, q0, d2 ; lo

55 vaddw.u8 q2, q0, d4

56 vaddw.u8 q4, q3, d8 ; hi

57 vaddw.u8 q5, q3, d10

58

59 sub r2, r2, r3, lsl #2 ; dst - 4*stride

60 add r0, r2, #4

61

62 vqmovun.s16 d2, q1 ; lo

63 vqmovun.s16 d4, q2

64 vqmovun.s16 d8, q4 ; hi

65 vqmovun.s16 d10, q5

66

67 vst1.32 {d2[0]}, [r2], r3 ; lo

68 vst1.32 {d8[0]}, [r0], r3 ; hi

69 vst1.32 {d2[1]}, [r2], r3

70 vst1.32 {d8[1]}, [r0], r3

71 vst1.32 {d4[0]}, [r2], r3

72 vst1.32 {d10[0]}, [r0], r3

73 vst1.32 {d4[1]}, [r2]

74 vst1.32 {d10[1]}, [r0]

75

76 vpop {d8-d15}

77 pop {r4, r5}

78 bx lr

79

80 ENDP ; \|idct_dequant_0_2x_neon\|

81 END

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