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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/gpu/vaapi/vaapi_jpeg_decoder.h"
#include <stddef.h>
#include <string.h>
#include "base/logging.h"
#include "base/macros.h"
#include "media/filters/jpeg_parser.h"
namespace media {
// VAAPI only support subset of JPEG profiles. This function determines a given
// parsed JPEG result is supported or not.
static bool IsVaapiSupportedJpeg(const JpegParseResult& jpeg) {
if (jpeg.frame_header.visible_width < 1 ||
jpeg.frame_header.visible_height < 1) {
DLOG(ERROR) << "width(" << jpeg.frame_header.visible_width
<< ") and height(" << jpeg.frame_header.visible_height
<< ") should be at least 1";
return false;
}
// Size 64k*64k is the maximum in the JPEG standard. VAAPI doesn't support
// resolutions larger than 16k*16k.
const int kMaxDimension = 16384;
if (jpeg.frame_header.coded_width > kMaxDimension ||
jpeg.frame_header.coded_height > kMaxDimension) {
DLOG(ERROR) << "VAAPI doesn't support size("
<< jpeg.frame_header.coded_width << "*"
<< jpeg.frame_header.coded_height << ") larger than "
<< kMaxDimension << "*" << kMaxDimension;
return false;
}
if (jpeg.frame_header.num_components != 3) {
DLOG(ERROR) << "VAAPI doesn't support num_components("
<< static_cast<int>(jpeg.frame_header.num_components)
<< ") != 3";
return false;
}
if (jpeg.frame_header.components[0].horizontal_sampling_factor <
jpeg.frame_header.components[1].horizontal_sampling_factor ||
jpeg.frame_header.components[0].horizontal_sampling_factor <
jpeg.frame_header.components[2].horizontal_sampling_factor) {
DLOG(ERROR) << "VAAPI doesn't supports horizontal sampling factor of Y"
<< " smaller than Cb and Cr";
return false;
}
if (jpeg.frame_header.components[0].vertical_sampling_factor <
jpeg.frame_header.components[1].vertical_sampling_factor ||
jpeg.frame_header.components[0].vertical_sampling_factor <
jpeg.frame_header.components[2].vertical_sampling_factor) {
DLOG(ERROR) << "VAAPI doesn't supports vertical sampling factor of Y"
<< " smaller than Cb and Cr";
return false;
}
return true;
}
static void FillPictureParameters(
const JpegFrameHeader& frame_header,
VAPictureParameterBufferJPEGBaseline* pic_param) {
memset(pic_param, 0, sizeof(*pic_param));
pic_param->picture_width = frame_header.coded_width;
pic_param->picture_height = frame_header.coded_height;
pic_param->num_components = frame_header.num_components;
for (int i = 0; i < pic_param->num_components; i++) {
pic_param->components[i].component_id = frame_header.components[i].id;
pic_param->components[i].h_sampling_factor =
frame_header.components[i].horizontal_sampling_factor;
pic_param->components[i].v_sampling_factor =
frame_header.components[i].vertical_sampling_factor;
pic_param->components[i].quantiser_table_selector =
frame_header.components[i].quantization_table_selector;
}
}
static void FillIQMatrix(const JpegQuantizationTable* q_table,
VAIQMatrixBufferJPEGBaseline* iq_matrix) {
memset(iq_matrix, 0, sizeof(*iq_matrix));
static_assert(kJpegMaxQuantizationTableNum ==
arraysize(iq_matrix->load_quantiser_table),
"max number of quantization table mismatched");
for (size_t i = 0; i < kJpegMaxQuantizationTableNum; i++) {
if (!q_table[i].valid)
continue;
iq_matrix->load_quantiser_table[i] = 1;
static_assert(
arraysize(iq_matrix->quantiser_table[i]) == arraysize(q_table[i].value),
"number of quantization entries mismatched");
for (size_t j = 0; j < arraysize(q_table[i].value); j++)
iq_matrix->quantiser_table[i][j] = q_table[i].value[j];
}
}
static void FillHuffmanTable(const JpegHuffmanTable* dc_table,
const JpegHuffmanTable* ac_table,
VAHuffmanTableBufferJPEGBaseline* huffman_table) {
memset(huffman_table, 0, sizeof(*huffman_table));
// Use default huffman tables if not specified in header.
bool has_huffman_table = false;
for (size_t i = 0; i < kJpegMaxHuffmanTableNumBaseline; i++) {
if (dc_table[i].valid || ac_table[i].valid) {
has_huffman_table = true;
break;
}
}
if (!has_huffman_table) {
dc_table = kDefaultDcTable;
ac_table = kDefaultAcTable;
}
static_assert(kJpegMaxHuffmanTableNumBaseline ==
arraysize(huffman_table->load_huffman_table),
"max number of huffman table mismatched");
static_assert(sizeof(huffman_table->huffman_table[0].num_dc_codes) ==
sizeof(dc_table[0].code_length),
"size of huffman table code length mismatch");
static_assert(sizeof(huffman_table->huffman_table[0].dc_values[0]) ==
sizeof(dc_table[0].code_value[0]),
"size of huffman table code value mismatch");
for (size_t i = 0; i < kJpegMaxHuffmanTableNumBaseline; i++) {
if (!dc_table[i].valid || !ac_table[i].valid)
continue;
huffman_table->load_huffman_table[i] = 1;
memcpy(huffman_table->huffman_table[i].num_dc_codes,
dc_table[i].code_length,
sizeof(huffman_table->huffman_table[i].num_dc_codes));
memcpy(huffman_table->huffman_table[i].dc_values, dc_table[i].code_value,
sizeof(huffman_table->huffman_table[i].dc_values));
memcpy(huffman_table->huffman_table[i].num_ac_codes,
ac_table[i].code_length,
sizeof(huffman_table->huffman_table[i].num_ac_codes));
memcpy(huffman_table->huffman_table[i].ac_values, ac_table[i].code_value,
sizeof(huffman_table->huffman_table[i].ac_values));
}
}
static void FillSliceParameters(
const JpegParseResult& parse_result,
VASliceParameterBufferJPEGBaseline* slice_param) {
memset(slice_param, 0, sizeof(*slice_param));
slice_param->slice_data_size = parse_result.data_size;
slice_param->slice_data_offset = 0;
slice_param->slice_data_flag = VA_SLICE_DATA_FLAG_ALL;
slice_param->slice_horizontal_position = 0;
slice_param->slice_vertical_position = 0;
slice_param->num_components = parse_result.scan.num_components;
for (int i = 0; i < slice_param->num_components; i++) {
slice_param->components[i].component_selector =
parse_result.scan.components[i].component_selector;
slice_param->components[i].dc_table_selector =
parse_result.scan.components[i].dc_selector;
slice_param->components[i].ac_table_selector =
parse_result.scan.components[i].ac_selector;
}
slice_param->restart_interval = parse_result.restart_interval;
// Cast to int to prevent overflow.
int max_h_factor =
parse_result.frame_header.components[0].horizontal_sampling_factor;
int max_v_factor =
parse_result.frame_header.components[0].vertical_sampling_factor;
int mcu_cols = parse_result.frame_header.coded_width / (max_h_factor * 8);
DCHECK_GT(mcu_cols, 0);
int mcu_rows = parse_result.frame_header.coded_height / (max_v_factor * 8);
DCHECK_GT(mcu_rows, 0);
slice_param->num_mcus = mcu_rows * mcu_cols;
}
// static
bool VaapiJpegDecoder::Decode(VaapiWrapper* vaapi_wrapper,
const JpegParseResult& parse_result,
VASurfaceID va_surface) {
DCHECK_NE(va_surface, VA_INVALID_SURFACE);
if (!IsVaapiSupportedJpeg(parse_result))
return false;
// Set picture parameters.
VAPictureParameterBufferJPEGBaseline pic_param;
FillPictureParameters(parse_result.frame_header, &pic_param);
if (!vaapi_wrapper->SubmitBuffer(VAPictureParameterBufferType,
sizeof(pic_param), &pic_param))
return false;
// Set quantization table.
VAIQMatrixBufferJPEGBaseline iq_matrix;
FillIQMatrix(parse_result.q_table, &iq_matrix);
if (!vaapi_wrapper->SubmitBuffer(VAIQMatrixBufferType, sizeof(iq_matrix),
&iq_matrix))
return false;
// Set huffman table.
VAHuffmanTableBufferJPEGBaseline huffman_table;
FillHuffmanTable(parse_result.dc_table, parse_result.ac_table,
&huffman_table);
if (!vaapi_wrapper->SubmitBuffer(VAHuffmanTableBufferType,
sizeof(huffman_table), &huffman_table))
return false;
// Set slice parameters.
VASliceParameterBufferJPEGBaseline slice_param;
FillSliceParameters(parse_result, &slice_param);
if (!vaapi_wrapper->SubmitBuffer(VASliceParameterBufferType,
sizeof(slice_param), &slice_param))
return false;
// Set scan data.
if (!vaapi_wrapper->SubmitBuffer(VASliceDataBufferType,
parse_result.data_size,
const_cast<char*>(parse_result.data)))
return false;
if (!vaapi_wrapper->ExecuteAndDestroyPendingBuffers(va_surface))
return false;
return true;
}
} // namespace media
|
