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 :
16 0 : static void recon_dcblock(MACROBLOCKD *x)
17 : {
18 0 : BLOCKD *b = &x->block[24];
19 : int i;
20 :
21 0 : for (i = 0; i < 16; i++)
22 : {
23 0 : x->block[i].dqcoeff[0] = b->diff[i];
24 : }
25 :
26 0 : }
27 :
28 0 : void vp8_inverse_transform_b(const vp8_idct_rtcd_vtable_t *rtcd, BLOCKD *b, int pitch)
29 : {
30 0 : if (b->eob > 1)
31 0 : IDCT_INVOKE(rtcd, idct16)(b->dqcoeff, b->diff, pitch);
32 : else
33 0 : IDCT_INVOKE(rtcd, idct1)(b->dqcoeff, b->diff, pitch);
34 0 : }
35 :
36 :
37 0 : 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 0 : IDCT_INVOKE(rtcd, iwalsh16)(x->block[24].dqcoeff, x->block[24].diff);
43 :
44 0 : recon_dcblock(x);
45 :
46 0 : for (i = 0; i < 16; i++)
47 : {
48 0 : vp8_inverse_transform_b(rtcd, &x->block[i], 32);
49 : }
50 :
51 0 : }
52 0 : void vp8_inverse_transform_mbuv(const vp8_idct_rtcd_vtable_t *rtcd, MACROBLOCKD *x)
53 : {
54 : int i;
55 :
56 0 : for (i = 16; i < 24; i++)
57 : {
58 0 : vp8_inverse_transform_b(rtcd, &x->block[i], 16);
59 : }
60 :
61 0 : }
62 :
63 :
64 0 : void vp8_inverse_transform_mb(const vp8_idct_rtcd_vtable_t *rtcd, MACROBLOCKD *x)
65 : {
66 : int i;
67 :
68 0 : if (x->mode_info_context->mbmi.mode != B_PRED &&
69 0 : x->mode_info_context->mbmi.mode != SPLITMV)
70 : {
71 : /* do 2nd order transform on the dc block */
72 :
73 0 : IDCT_INVOKE(rtcd, iwalsh16)(&x->block[24].dqcoeff[0], x->block[24].diff);
74 0 : recon_dcblock(x);
75 : }
76 :
77 0 : for (i = 0; i < 16; i++)
78 : {
79 0 : vp8_inverse_transform_b(rtcd, &x->block[i], 32);
80 : }
81 :
82 :
83 0 : for (i = 16; i < 24; i++)
84 : {
85 0 : vp8_inverse_transform_b(rtcd, &x->block[i], 16);
86 : }
87 :
88 0 : }
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