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
|
/*
* Copyright (c) 2017, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
// Lightfield Decoder
// ==================
//
// This is an example of a simple lightfield decoder. It builds upon the
// simple_decoder.c example. It takes an input file containing the compressed
// data (in ivf format), treating it as a lightfield instead of a video.
// After running the lightfield encoder, run lightfield decoder to decode a
// batch of tiles:
// examples/lightfield_decoder vase10x10.ivf vase_reference.yuv 4
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "aom/aom_decoder.h"
#include "aom/aomdx.h"
#include "aom_scale/yv12config.h"
#include "av1/common/enums.h"
#include "common/tools_common.h"
#include "common/video_reader.h"
static const char *exec_name;
void usage_exit(void) {
fprintf(stderr, "Usage: %s <infile> <outfile> <num_references>\n", exec_name);
exit(EXIT_FAILURE);
}
// Tile list entry provided by the application
typedef struct {
int image_idx;
int reference_idx;
int tile_col;
int tile_row;
} TILE_LIST_INFO;
// M references: 0 - M-1; N images(including references): 0 - N-1;
// Note: order the image index incrementally, so that we only go through the
// bitstream once to construct the tile list.
const int num_tile_lists = 2;
const uint16_t tile_count_minus_1 = 9 - 1;
const TILE_LIST_INFO tile_list[2][9] = {
{ { 16, 0, 4, 5 },
{ 83, 3, 13, 2 },
{ 57, 2, 2, 6 },
{ 31, 1, 11, 5 },
{ 2, 0, 7, 4 },
{ 77, 3, 9, 9 },
{ 49, 1, 0, 1 },
{ 6, 0, 3, 10 },
{ 63, 2, 5, 8 } },
{ { 65, 2, 11, 1 },
{ 42, 1, 3, 7 },
{ 88, 3, 8, 4 },
{ 76, 3, 1, 15 },
{ 1, 0, 2, 2 },
{ 19, 0, 5, 6 },
{ 60, 2, 4, 0 },
{ 25, 1, 11, 15 },
{ 50, 2, 5, 4 } },
};
int main(int argc, char **argv) {
FILE *outfile = NULL;
aom_codec_ctx_t codec;
AvxVideoReader *reader = NULL;
const AvxInterface *decoder = NULL;
const AvxVideoInfo *info = NULL;
int num_references;
aom_image_t reference_images[MAX_EXTERNAL_REFERENCES];
size_t frame_size = 0;
const unsigned char *frame = NULL;
int n, i, j;
exec_name = argv[0];
if (argc != 4) die("Invalid number of arguments.");
reader = aom_video_reader_open(argv[1]);
if (!reader) die("Failed to open %s for reading.", argv[1]);
if (!(outfile = fopen(argv[2], "wb")))
die("Failed to open %s for writing.", argv[2]);
num_references = (int)strtol(argv[3], NULL, 0);
info = aom_video_reader_get_info(reader);
decoder = get_aom_decoder_by_fourcc(info->codec_fourcc);
if (!decoder) die("Unknown input codec.");
printf("Using %s\n", aom_codec_iface_name(decoder->codec_interface()));
if (aom_codec_dec_init(&codec, decoder->codec_interface(), NULL, 0))
die_codec(&codec, "Failed to initialize decoder.");
if (aom_codec_control(&codec, AV1D_SET_IS_ANNEXB, info->is_annexb)) {
die("Failed to set annex b status");
}
// Decode anchor frames.
aom_codec_control_(&codec, AV1_SET_TILE_MODE, 0);
for (i = 0; i < num_references; ++i) {
aom_video_reader_read_frame(reader);
frame = aom_video_reader_get_frame(reader, &frame_size);
if (aom_codec_decode(&codec, frame, frame_size, NULL))
die_codec(&codec, "Failed to decode frame.");
if (i == 0) {
aom_img_fmt_t ref_fmt = 0;
if (aom_codec_control(&codec, AV1D_GET_IMG_FORMAT, &ref_fmt))
die_codec(&codec, "Failed to get the image format");
int frame_res[2];
if (aom_codec_control(&codec, AV1D_GET_FRAME_SIZE, frame_res))
die_codec(&codec, "Failed to get the image frame size");
// Allocate memory to store decoded references. Allocate memory with the
// border so that it can be used as a reference.
for (j = 0; j < num_references; j++) {
unsigned int border = AOM_BORDER_IN_PIXELS;
if (!aom_img_alloc_with_border(&reference_images[j], ref_fmt,
frame_res[0], frame_res[1], 32, 8,
border)) {
die("Failed to allocate references.");
}
}
}
if (aom_codec_control(&codec, AV1_COPY_NEW_FRAME_IMAGE,
&reference_images[i]))
die_codec(&codec, "Failed to copy decoded reference frame");
aom_codec_iter_t iter = NULL;
aom_image_t *img = NULL;
while ((img = aom_codec_get_frame(&codec, &iter)) != NULL) {
char name[1024];
snprintf(name, sizeof(name), "ref_%d.yuv", i);
printf("writing ref image to %s, %d, %d\n", name, img->d_w, img->d_h);
FILE *ref_file = fopen(name, "wb");
aom_img_write(img, ref_file);
fclose(ref_file);
}
}
FILE *infile = aom_video_reader_get_file(reader);
// Record the offset of the first camera image.
const FileOffset camera_frame_pos = ftello(infile);
// Process 1 tile.
for (n = 0; n < num_tile_lists; n++) {
for (i = 0; i <= tile_count_minus_1; i++) {
int image_idx = tile_list[n][i].image_idx;
int ref_idx = tile_list[n][i].reference_idx;
int tc = tile_list[n][i].tile_col;
int tr = tile_list[n][i].tile_row;
int frame_cnt = -1;
// Seek to the first camera image.
fseeko(infile, camera_frame_pos, SEEK_SET);
// Read out the camera image
while (frame_cnt != image_idx) {
aom_video_reader_read_frame(reader);
frame_cnt++;
}
frame = aom_video_reader_get_frame(reader, &frame_size);
aom_codec_control_(&codec, AV1_SET_TILE_MODE, 1);
aom_codec_control_(&codec, AV1D_EXT_TILE_DEBUG, 1);
aom_codec_control_(&codec, AV1_SET_DECODE_TILE_ROW, tr);
aom_codec_control_(&codec, AV1_SET_DECODE_TILE_COL, tc);
av1_ref_frame_t ref;
ref.idx = 0;
ref.use_external_ref = 1;
ref.img = reference_images[ref_idx];
if (aom_codec_control(&codec, AV1_SET_REFERENCE, &ref)) {
die_codec(&codec, "Failed to set reference frame.");
}
aom_codec_err_t aom_status =
aom_codec_decode(&codec, frame, frame_size, NULL);
if (aom_status) die_codec(&codec, "Failed to decode tile.");
aom_codec_iter_t iter = NULL;
aom_image_t *img = aom_codec_get_frame(&codec, &iter);
aom_img_write(img, outfile);
}
}
for (i = 0; i < num_references; i++) aom_img_free(&reference_images[i]);
if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
aom_video_reader_close(reader);
fclose(outfile);
return EXIT_SUCCESS;
}
|
