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
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11
12 #include "invtrans.h"
13
14
15
recon_dcblock(MACROBLOCKD * x)16 static void recon_dcblock(MACROBLOCKD *x)
17 {
18 BLOCKD *b = &x->block[24];
19 int i;
20
21 for (i = 0; i < 16; i++)
22 {
23 x->block[i].dqcoeff[0] = b->diff[i];
24 }
25
26 }
27
vp8_inverse_transform_b(const vp8_idct_rtcd_vtable_t * rtcd,BLOCKD * b,int pitch)28 void vp8_inverse_transform_b(const vp8_idct_rtcd_vtable_t *rtcd, BLOCKD *b, int pitch)
29 {
30 if (b->eob > 1)
31 IDCT_INVOKE(rtcd, idct16)(b->dqcoeff, b->diff, pitch);
32 else
33 IDCT_INVOKE(rtcd, idct1)(b->dqcoeff, b->diff, pitch);
34 }
35
36
vp8_inverse_transform_mby(const vp8_idct_rtcd_vtable_t * rtcd,MACROBLOCKD * x)37 void vp8_inverse_transform_mby(const vp8_idct_rtcd_vtable_t *rtcd, MACROBLOCKD *x)
38 {
39 int i;
40
41 /* do 2nd order transform on the dc block */
42 IDCT_INVOKE(rtcd, iwalsh16)(x->block[24].dqcoeff, x->block[24].diff);
43
44 recon_dcblock(x);
45
46 for (i = 0; i < 16; i++)
47 {
48 vp8_inverse_transform_b(rtcd, &x->block[i], 32);
49 }
50
51 }
vp8_inverse_transform_mbuv(const vp8_idct_rtcd_vtable_t * rtcd,MACROBLOCKD * x)52 void vp8_inverse_transform_mbuv(const vp8_idct_rtcd_vtable_t *rtcd, MACROBLOCKD *x)
53 {
54 int i;
55
56 for (i = 16; i < 24; i++)
57 {
58 vp8_inverse_transform_b(rtcd, &x->block[i], 16);
59 }
60
61 }
62
63
vp8_inverse_transform_mb(const vp8_idct_rtcd_vtable_t * rtcd,MACROBLOCKD * x)64 void vp8_inverse_transform_mb(const vp8_idct_rtcd_vtable_t *rtcd, MACROBLOCKD *x)
65 {
66 int i;
67
68 if (x->mode_info_context->mbmi.mode != B_PRED &&
69 x->mode_info_context->mbmi.mode != SPLITMV)
70 {
71 /* do 2nd order transform on the dc block */
72
73 IDCT_INVOKE(rtcd, iwalsh16)(&x->block[24].dqcoeff[0], x->block[24].diff);
74 recon_dcblock(x);
75 }
76
77 for (i = 0; i < 16; i++)
78 {
79 vp8_inverse_transform_b(rtcd, &x->block[i], 32);
80 }
81
82
83 for (i = 16; i < 24; i++)
84 {
85 vp8_inverse_transform_b(rtcd, &x->block[i], 16);
86 }
87
88 }
89