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1 | /***************************************************************************** |
2 | * Copyright (C) 2013 x265 project | |
3 | * | |
4 | * Authors: Gopu Govindaswamy <gopu@multicorewareinc.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program 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 | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. | |
19 | * | |
20 | * This program is also available under a commercial proprietary license. | |
21 | * For more information, contact us at license @ x265.com. | |
22 | *****************************************************************************/ | |
23 | ||
24 | #ifndef X265_LOWRES_H | |
25 | #define X265_LOWRES_H | |
26 | ||
27 | #include "primitives.h" | |
28 | #include "common.h" | |
29 | #include "mv.h" | |
30 | ||
31 | namespace x265 { | |
32 | // private namespace | |
33 | ||
34 | class PicYuv; | |
35 | ||
36 | struct ReferencePlanes | |
37 | { | |
38 | ReferencePlanes() { memset(this, 0, sizeof(ReferencePlanes)); } | |
39 | ||
40 | pixel* fpelPlane; | |
41 | pixel* lowresPlane[4]; | |
42 | ||
43 | bool isWeighted; | |
44 | bool isLowres; | |
45 | intptr_t lumaStride; | |
46 | int weight; | |
47 | int offset; | |
48 | int shift; | |
49 | int round; | |
50 | ||
51 | /* lowres motion compensation, you must provide a buffer and stride for QPEL averaged pixels | |
52 | * in case QPEL is required. Else it returns a pointer to the HPEL pixels */ | |
53 | inline pixel *lowresMC(intptr_t blockOffset, const MV& qmv, pixel *buf, intptr_t& outstride) | |
54 | { | |
55 | if ((qmv.x | qmv.y) & 1) | |
56 | { | |
57 | int hpelA = (qmv.y & 2) | ((qmv.x & 2) >> 1); | |
58 | pixel *frefA = lowresPlane[hpelA] + blockOffset + (qmv.x >> 2) + (qmv.y >> 2) * lumaStride; | |
59 | ||
60 | MV qmvB = qmv + MV((qmv.x & 1) * 2, (qmv.y & 1) * 2); | |
61 | int hpelB = (qmvB.y & 2) | ((qmvB.x & 2) >> 1); | |
62 | ||
63 | pixel *frefB = lowresPlane[hpelB] + blockOffset + (qmvB.x >> 2) + (qmvB.y >> 2) * lumaStride; | |
64 | primitives.pixelavg_pp[LUMA_8x8](buf, outstride, frefA, lumaStride, frefB, lumaStride, 32); | |
65 | return buf; | |
66 | } | |
67 | else | |
68 | { | |
69 | outstride = lumaStride; | |
70 | int hpel = (qmv.y & 2) | ((qmv.x & 2) >> 1); | |
71 | return lowresPlane[hpel] + blockOffset + (qmv.x >> 2) + (qmv.y >> 2) * lumaStride; | |
72 | } | |
73 | } | |
74 | ||
75 | inline int lowresQPelCost(pixel *fenc, intptr_t blockOffset, const MV& qmv, pixelcmp_t comp) | |
76 | { | |
77 | if ((qmv.x | qmv.y) & 1) | |
78 | { | |
79 | ALIGN_VAR_16(pixel, subpelbuf[8 * 8]); | |
80 | int hpelA = (qmv.y & 2) | ((qmv.x & 2) >> 1); | |
81 | pixel *frefA = lowresPlane[hpelA] + blockOffset + (qmv.x >> 2) + (qmv.y >> 2) * lumaStride; | |
82 | MV qmvB = qmv + MV((qmv.x & 1) * 2, (qmv.y & 1) * 2); | |
83 | int hpelB = (qmvB.y & 2) | ((qmvB.x & 2) >> 1); | |
84 | pixel *frefB = lowresPlane[hpelB] + blockOffset + (qmvB.x >> 2) + (qmvB.y >> 2) * lumaStride; | |
85 | primitives.pixelavg_pp[LUMA_8x8](subpelbuf, 8, frefA, lumaStride, frefB, lumaStride, 32); | |
86 | return comp(fenc, FENC_STRIDE, subpelbuf, 8); | |
87 | } | |
88 | else | |
89 | { | |
90 | int hpel = (qmv.y & 2) | ((qmv.x & 2) >> 1); | |
91 | pixel *fref = lowresPlane[hpel] + blockOffset + (qmv.x >> 2) + (qmv.y >> 2) * lumaStride; | |
92 | return comp(fenc, FENC_STRIDE, fref, lumaStride); | |
93 | } | |
94 | } | |
95 | }; | |
96 | ||
97 | /* lowres buffers, sizes and strides */ | |
98 | struct Lowres : public ReferencePlanes | |
99 | { | |
100 | pixel *buffer[4]; | |
101 | ||
102 | int frameNum; // Presentation frame number | |
103 | int sliceType; // Slice type decided by lookahead | |
104 | int width; // width of lowres frame in pixels | |
105 | int lines; // height of lowres frame in pixel lines | |
106 | int leadingBframes; // number of leading B frames for P or I | |
107 | ||
108 | bool bIntraCalculated; | |
109 | bool bScenecut; // Set to false if the frame cannot possibly be part of a real scenecut. | |
110 | bool bKeyframe; | |
111 | bool bLastMiniGopBFrame; | |
112 | ||
113 | /* lookahead output data */ | |
114 | int64_t costEst[X265_BFRAME_MAX + 2][X265_BFRAME_MAX + 2]; | |
115 | int64_t costEstAq[X265_BFRAME_MAX + 2][X265_BFRAME_MAX + 2]; | |
116 | int32_t* rowSatds[X265_BFRAME_MAX + 2][X265_BFRAME_MAX + 2]; | |
117 | int intraMbs[X265_BFRAME_MAX + 2]; | |
118 | int32_t* intraCost; | |
119 | int64_t satdCost; | |
120 | uint16_t* lowresCostForRc; | |
121 | uint16_t(*lowresCosts[X265_BFRAME_MAX + 2][X265_BFRAME_MAX + 2]); | |
122 | int32_t* lowresMvCosts[2][X265_BFRAME_MAX + 1]; | |
123 | MV* lowresMvs[2][X265_BFRAME_MAX + 1]; | |
124 | ||
125 | /* used for vbvLookahead */ | |
126 | int plannedType[X265_LOOKAHEAD_MAX + 1]; | |
127 | int64_t plannedSatd[X265_LOOKAHEAD_MAX + 1]; | |
128 | int indB; | |
129 | int bframes; | |
130 | ||
131 | /* rate control / adaptive quant data */ | |
132 | double* qpAqOffset; // AQ QP offset values for each 16x16 CU | |
133 | double* qpCuTreeOffset; // cuTree QP offset values for each 16x16 CU | |
134 | int* invQscaleFactor; // qScale values for qp Aq Offsets | |
135 | uint64_t wp_ssd[3]; // This is different than SSDY, this is sum(pixel^2) - sum(pixel)^2 for entire frame | |
136 | uint64_t wp_sum[3]; | |
137 | ||
138 | /* cutree intermediate data */ | |
139 | uint16_t* propagateCost; | |
140 | double weightedCostDelta[X265_BFRAME_MAX + 2]; | |
141 | ||
142 | bool create(PicYuv *origPic, int _bframes, bool bAqEnabled); | |
143 | void destroy(); | |
144 | void init(PicYuv *origPic, int poc, int sliceType); | |
145 | }; | |
146 | } | |
147 | ||
148 | #endif // ifndef X265_LOWRES_H |