ed9c66f584
Instead of using the predict buffer, the decoder now writes
the predictor into the recon buffer. For blocks with eob=0,
unnecessary idcts can be eliminated. This gave a performance
boost of ~1.8% for the HD clips used.
Tero: Added needed changes to ARM side and scheduled some
assembly code to prevent interlocks.
Patch Set 6: Merged (I1bcdca7a95aacc3a181b9faa6b10e3a71ee24df3)
into this commit because of similarities in the idct
functions.
Patch Set 7: EC bug fix.
Change-Id: Ie31d90b5d3522e1108163f2ac491e455e3f955e6
55 lines
1.3 KiB
NASM
55 lines
1.3 KiB
NASM
;
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; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license and patent
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; grant that can be found in the LICENSE file in the root of the source
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; tree. All contributing project authors may be found in the AUTHORS
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; file in the root of the source tree.
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;
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EXPORT |vp8_dc_only_idct_add_neon|
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ARM
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REQUIRE8
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PRESERVE8
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AREA ||.text||, CODE, READONLY, ALIGN=2
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;void vp8_dc_only_idct_add_c(short input_dc, unsigned char *pred_ptr,
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; int pred_stride, unsigned char *dst_ptr,
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; int dst_stride)
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; r0 input_dc
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; r1 pred_ptr
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; r2 pred_stride
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; r3 dst_ptr
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; sp dst_stride
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|vp8_dc_only_idct_add_neon| PROC
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add r0, r0, #4
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asr r0, r0, #3
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ldr r12, [sp]
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vdup.16 q0, r0
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vld1.32 {d2[0]}, [r1], r2
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vld1.32 {d2[1]}, [r1], r2
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vld1.32 {d4[0]}, [r1], r2
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vld1.32 {d4[1]}, [r1]
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vaddw.u8 q1, q0, d2
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vaddw.u8 q2, q0, d4
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vqmovun.s16 d2, q1
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vqmovun.s16 d4, q2
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vst1.32 {d2[0]}, [r3], r12
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vst1.32 {d2[1]}, [r3], r12
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vst1.32 {d4[0]}, [r3], r12
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vst1.32 {d4[1]}, [r3]
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bx lr
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ENDP
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END
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