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https://github.com/FFmpeg/FFmpeg.git
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94d2b0d2fd
This will allow for easier implementation of ARM-optimized functions in libraries other than libavcodec.
108 lines
3.8 KiB
ArmAsm
108 lines
3.8 KiB
ArmAsm
/*
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* Copyright (c) 2010 Mans Rullgard
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/arm/asm.S"
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#include "asm-offsets.h"
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function ff_dct_unquantize_h263_inter_neon, export=1
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add r12, r0, #BLOCK_LAST_INDEX
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ldr r12, [r12, r2, lsl #2]
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add r0, r0, #INTER_SCANTAB_RASTER_END
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ldrb r12, [r0, r12]
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sub r2, r3, #1
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lsl r0, r3, #1
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orr r2, r2, #1
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add r3, r12, #1
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endfunc
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function ff_dct_unquantize_h263_neon, export=1
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vdup.16 q15, r0 @ qmul
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vdup.16 q14, r2 @ qadd
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vneg.s16 q13, q14
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cmp r3, #4
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mov r0, r1
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ble 2f
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1:
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vld1.16 {q0}, [r0,:128]!
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vclt.s16 q3, q0, #0
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vld1.16 {q8}, [r0,:128]!
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vceq.s16 q1, q0, #0
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vmul.s16 q2, q0, q15
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vclt.s16 q11, q8, #0
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vmul.s16 q10, q8, q15
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vbsl q3, q13, q14
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vbsl q11, q13, q14
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vadd.s16 q2, q2, q3
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vceq.s16 q9, q8, #0
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vadd.s16 q10, q10, q11
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vbif q0, q2, q1
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vbif q8, q10, q9
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subs r3, r3, #16
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vst1.16 {q0}, [r1,:128]!
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vst1.16 {q8}, [r1,:128]!
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it le
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bxle lr
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cmp r3, #8
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bgt 1b
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2:
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vld1.16 {d0}, [r0,:64]
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vclt.s16 d3, d0, #0
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vceq.s16 d1, d0, #0
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vmul.s16 d2, d0, d30
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vbsl d3, d26, d28
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vadd.s16 d2, d2, d3
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vbif d0, d2, d1
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vst1.16 {d0}, [r1,:64]
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bx lr
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endfunc
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function ff_dct_unquantize_h263_intra_neon, export=1
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push {r4-r6,lr}
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add r12, r0, #BLOCK_LAST_INDEX
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ldr r6, [r0, #AC_PRED]
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add lr, r0, #INTER_SCANTAB_RASTER_END
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cmp r6, #0
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it ne
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movne r12, #63
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bne 1f
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ldr r12, [r12, r2, lsl #2]
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ldrb r12, [lr, r12]
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1: ldr r5, [r0, #H263_AIC]
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ldrsh r4, [r1]
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cmp r5, #0
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mov r5, r1
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it ne
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movne r2, #0
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bne 2f
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cmp r2, #4
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it ge
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addge r0, r0, #4
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sub r2, r3, #1
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ldr r6, [r0, #Y_DC_SCALE]
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orr r2, r2, #1
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smulbb r4, r4, r6
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2: lsl r0, r3, #1
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add r3, r12, #1
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bl ff_dct_unquantize_h263_neon
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vmov.16 d0[0], r4
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vst1.16 {d0[0]}, [r5]
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pop {r4-r6,pc}
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endfunc
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