1/*
2 * Copyright (c) 2010 Mans Rullgard
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "asm.S"
22#include "asm-offsets.h"
23
24function ff_dct_unquantize_h263_inter_neon, export=1
25        add             r12, r0,  #BLOCK_LAST_INDEX
26        ldr             r12, [r12, r2, lsl #2]
27        add             r0,  r0,  #INTER_SCANTAB_RASTER_END
28        ldrb            r12, [r0, r12]
29        sub             r2,  r3,  #1
30        lsl             r0,  r3,  #1
31        orr             r2,  r2,  #1
32        add             r3,  r12, #1
33endfunc
34
35function ff_dct_unquantize_h263_neon, export=1
36        vdup.16         q15, r0                 @ qmul
37        vdup.16         q14, r2                 @ qadd
38        vneg.s16        q13, q14
39        cmp             r3,  #4
40        mov             r0,  r1
41        ble             2f
421:
43        vld1.16         {q0},     [r0,:128]!
44        vclt.s16        q3,  q0,  #0
45        vld1.16         {q8},     [r0,:128]!
46        vceq.s16        q1,  q0,  #0
47        vmul.s16        q2,  q0,  q15
48        vclt.s16        q11, q8,  #0
49        vmul.s16        q10, q8,  q15
50        vbsl            q3,  q13, q14
51        vbsl            q11, q13, q14
52        vadd.s16        q2,  q2,  q3
53        vceq.s16        q9,  q8,  #0
54        vadd.s16        q10, q10, q11
55        vbif            q0,  q2,  q1
56        vbif            q8,  q10, q9
57        subs            r3,  r3,  #16
58        vst1.16         {q0},     [r1,:128]!
59        vst1.16         {q8},     [r1,:128]!
60        it              le
61        bxle            lr
62        cmp             r3,  #8
63        bgt             1b
642:
65        vld1.16         {d0},     [r0,:64]
66        vclt.s16        d3,  d0,  #0
67        vceq.s16        d1,  d0,  #0
68        vmul.s16        d2,  d0,  d30
69        vbsl            d3,  d26, d28
70        vadd.s16        d2,  d2,  d3
71        vbif            d0,  d2,  d1
72        vst1.16         {d0},     [r1,:64]
73        bx              lr
74endfunc
75
76function ff_dct_unquantize_h263_intra_neon, export=1
77        push            {r4-r6,lr}
78        add             r12, r0,  #BLOCK_LAST_INDEX
79        ldr             r6,  [r0, #AC_PRED]
80        add             lr,  r0,  #INTER_SCANTAB_RASTER_END
81        cmp             r6,  #0
82        it              ne
83        movne           r12, #63
84        bne             1f
85        ldr             r12, [r12, r2, lsl #2]
86        ldrb            r12, [lr, r12]
871:      ldr             r5,  [r0, #H263_AIC]
88        ldrsh           r4,  [r1]
89        cmp             r5,  #0
90        mov             r5,  r1
91        it              ne
92        movne           r2,  #0
93        bne             2f
94        cmp             r2,  #4
95        it              ge
96        addge           r0,  r0,  #4
97        sub             r2,  r3,  #1
98        ldr             r6,  [r0, #Y_DC_SCALE]
99        orr             r2,  r2,  #1
100        smulbb          r4,  r4,  r6
1012:      lsl             r0,  r3,  #1
102        add             r3,  r12, #1
103        bl              ff_dct_unquantize_h263_neon
104        vmov.16         d0[0], r4
105        vst1.16         {d0[0]},  [r5]
106        pop             {r4-r6,pc}
107endfunc
108