1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
// SPDX-License-Identifier: GPL-2.0
/*
* Hantro VPU codec driver
*
* Copyright (C) 2018 Rockchip Electronics Co., Ltd.
*/
#include "hantro.h"
/*
* probs table with packed
*/
struct vp8_prob_tbl_packed {
u8 prob_mb_skip_false;
u8 prob_intra;
u8 prob_ref_last;
u8 prob_ref_golden;
u8 prob_segment[3];
u8 padding0;
u8 prob_luma_16x16_pred_mode[4];
u8 prob_chroma_pred_mode[3];
u8 padding1;
/* mv prob */
u8 prob_mv_context[2][19];
u8 padding2[2];
/* coeff probs */
u8 prob_coeffs[4][8][3][11];
u8 padding3[96];
};
/*
* filter taps taken to 7-bit precision,
* reference RFC6386#Page-16, filters[8][6]
*/
const u32 hantro_vp8_dec_mc_filter[8][6] = {
{ 0, 0, 128, 0, 0, 0 },
{ 0, -6, 123, 12, -1, 0 },
{ 2, -11, 108, 36, -8, 1 },
{ 0, -9, 93, 50, -6, 0 },
{ 3, -16, 77, 77, -16, 3 },
{ 0, -6, 50, 93, -9, 0 },
{ 1, -8, 36, 108, -11, 2 },
{ 0, -1, 12, 123, -6, 0 }
};
void hantro_vp8_prob_update(struct hantro_ctx *ctx,
const struct v4l2_ctrl_vp8_frame_header *hdr)
{
const struct v4l2_vp8_entropy_header *entropy = &hdr->entropy_header;
u32 i, j, k;
u8 *dst;
/* first probs */
dst = ctx->vp8_dec.prob_tbl.cpu;
dst[0] = hdr->prob_skip_false;
dst[1] = hdr->prob_intra;
dst[2] = hdr->prob_last;
dst[3] = hdr->prob_gf;
dst[4] = hdr->segment_header.segment_probs[0];
dst[5] = hdr->segment_header.segment_probs[1];
dst[6] = hdr->segment_header.segment_probs[2];
dst[7] = 0;
dst += 8;
dst[0] = entropy->y_mode_probs[0];
dst[1] = entropy->y_mode_probs[1];
dst[2] = entropy->y_mode_probs[2];
dst[3] = entropy->y_mode_probs[3];
dst[4] = entropy->uv_mode_probs[0];
dst[5] = entropy->uv_mode_probs[1];
dst[6] = entropy->uv_mode_probs[2];
dst[7] = 0; /*unused */
/* mv probs */
dst += 8;
dst[0] = entropy->mv_probs[0][0]; /* is short */
dst[1] = entropy->mv_probs[1][0];
dst[2] = entropy->mv_probs[0][1]; /* sign */
dst[3] = entropy->mv_probs[1][1];
dst[4] = entropy->mv_probs[0][8 + 9];
dst[5] = entropy->mv_probs[0][9 + 9];
dst[6] = entropy->mv_probs[1][8 + 9];
dst[7] = entropy->mv_probs[1][9 + 9];
dst += 8;
for (i = 0; i < 2; ++i) {
for (j = 0; j < 8; j += 4) {
dst[0] = entropy->mv_probs[i][j + 9 + 0];
dst[1] = entropy->mv_probs[i][j + 9 + 1];
dst[2] = entropy->mv_probs[i][j + 9 + 2];
dst[3] = entropy->mv_probs[i][j + 9 + 3];
dst += 4;
}
}
for (i = 0; i < 2; ++i) {
dst[0] = entropy->mv_probs[i][0 + 2];
dst[1] = entropy->mv_probs[i][1 + 2];
dst[2] = entropy->mv_probs[i][2 + 2];
dst[3] = entropy->mv_probs[i][3 + 2];
dst[4] = entropy->mv_probs[i][4 + 2];
dst[5] = entropy->mv_probs[i][5 + 2];
dst[6] = entropy->mv_probs[i][6 + 2];
dst[7] = 0; /*unused */
dst += 8;
}
/* coeff probs (header part) */
dst = ctx->vp8_dec.prob_tbl.cpu;
dst += (8 * 7);
for (i = 0; i < 4; ++i) {
for (j = 0; j < 8; ++j) {
for (k = 0; k < 3; ++k) {
dst[0] = entropy->coeff_probs[i][j][k][0];
dst[1] = entropy->coeff_probs[i][j][k][1];
dst[2] = entropy->coeff_probs[i][j][k][2];
dst[3] = entropy->coeff_probs[i][j][k][3];
dst += 4;
}
}
}
/* coeff probs (footer part) */
dst = ctx->vp8_dec.prob_tbl.cpu;
dst += (8 * 55);
for (i = 0; i < 4; ++i) {
for (j = 0; j < 8; ++j) {
for (k = 0; k < 3; ++k) {
dst[0] = entropy->coeff_probs[i][j][k][4];
dst[1] = entropy->coeff_probs[i][j][k][5];
dst[2] = entropy->coeff_probs[i][j][k][6];
dst[3] = entropy->coeff_probs[i][j][k][7];
dst[4] = entropy->coeff_probs[i][j][k][8];
dst[5] = entropy->coeff_probs[i][j][k][9];
dst[6] = entropy->coeff_probs[i][j][k][10];
dst[7] = 0; /*unused */
dst += 8;
}
}
}
}
int hantro_vp8_dec_init(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
struct hantro_aux_buf *aux_buf;
unsigned int mb_width, mb_height;
size_t segment_map_size;
int ret;
/* segment map table size calculation */
mb_width = DIV_ROUND_UP(ctx->dst_fmt.width, 16);
mb_height = DIV_ROUND_UP(ctx->dst_fmt.height, 16);
segment_map_size = round_up(DIV_ROUND_UP(mb_width * mb_height, 4), 64);
/*
* In context init the dma buffer for segment map must be allocated.
* And the data in segment map buffer must be set to all zero.
*/
aux_buf = &ctx->vp8_dec.segment_map;
aux_buf->size = segment_map_size;
aux_buf->cpu = dma_alloc_coherent(vpu->dev, aux_buf->size,
&aux_buf->dma, GFP_KERNEL);
if (!aux_buf->cpu)
return -ENOMEM;
/*
* Allocate probability table buffer,
* total 1208 bytes, 4K page is far enough.
*/
aux_buf = &ctx->vp8_dec.prob_tbl;
aux_buf->size = sizeof(struct vp8_prob_tbl_packed);
aux_buf->cpu = dma_alloc_coherent(vpu->dev, aux_buf->size,
&aux_buf->dma, GFP_KERNEL);
if (!aux_buf->cpu) {
ret = -ENOMEM;
goto err_free_seg_map;
}
return 0;
err_free_seg_map:
dma_free_coherent(vpu->dev, ctx->vp8_dec.segment_map.size,
ctx->vp8_dec.segment_map.cpu,
ctx->vp8_dec.segment_map.dma);
return ret;
}
void hantro_vp8_dec_exit(struct hantro_ctx *ctx)
{
struct hantro_vp8_dec_hw_ctx *vp8_dec = &ctx->vp8_dec;
struct hantro_dev *vpu = ctx->dev;
dma_free_coherent(vpu->dev, vp8_dec->segment_map.size,
vp8_dec->segment_map.cpu, vp8_dec->segment_map.dma);
dma_free_coherent(vpu->dev, vp8_dec->prob_tbl.size,
vp8_dec->prob_tbl.cpu, vp8_dec->prob_tbl.dma);
}
|
