AOMedia Codec SDK: lightfield_tile_list_decoder

AOMedia Codec SDK

lightfield_tile_list_decoder
1 /*
2 * Copyright (c) 2018, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 // Lightfield Tile List Decoder
13 // ============================
14 //
15 // This is a lightfield tile list decoder example. It takes an input file that
16 // contains the anchor frames that are references of the coded tiles, the camera
17 // frame header, and tile list OBUs that include the tile information and the
18 // compressed tile data. This input file is reconstructed from the encoded
19 // lightfield ivf file, and is decodable by AV1 decoder. num_references is
20 // the number of anchor frames coded at the beginning of the light field file.
21 // num_tile_lists is the number of tile lists need to be decoded. There is an
22 // optional parameter allowing to choose the output format, and the supported
23 // formats are YUV1D(default), YUV, and NV12.
24 // Run lightfield tile list decoder to decode an AV1 tile list file:
25 // examples/lightfield_tile_list_decoder vase_tile_list.ivf vase_tile_list.yuv
26 // 4 2 0(optional)
27
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <assert.h>
32
33 #include "aom/aom_decoder.h"
34 #include "aom/aomdx.h"
35 #include "aom_scale/yv12config.h"
36 #include "av1/common/enums.h"
37 #include "common/tools_common.h"
38 #include "common/video_reader.h"
39
40 static const char *exec_name;
41
42 void usage_exit(void) {
43 fprintf(stderr,
44 "Usage: %s <infile> <outfile> <num_references> <num_tile_lists> "
45 "<output format(optional)>\n",
46 exec_name);
47 exit(EXIT_FAILURE);
48 }
49
50 static void write_tile_yuv1d(aom_codec_ctx_t *codec, const aom_image_t *img,
51 FILE *file) {
52 // read out the tile size.
53 unsigned int tile_size = 0;
54 if (aom_codec_control(codec, AV1D_GET_TILE_SIZE, &tile_size))
55 die_codec(codec, "Failed to get the tile size");
56 const unsigned int tile_width = tile_size >> 16;
57 const unsigned int tile_height = tile_size & 65535;
58 const uint32_t output_frame_width_in_tiles = img->d_w / tile_width;
59
60 unsigned int tile_count = 0;
61 if (aom_codec_control(codec, AV1D_GET_TILE_COUNT, &tile_count))
62 die_codec(codec, "Failed to get the tile size");
63
64 // Write tile to file.
65 const int shift = (img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) ? 1 : 0;
66 unsigned int tile_idx;
67
68 for (tile_idx = 0; tile_idx < tile_count; ++tile_idx) {
69 const int row_offset =
70 (tile_idx / output_frame_width_in_tiles) * tile_height;
71 const int col_offset =
72 (tile_idx % output_frame_width_in_tiles) * tile_width;
73 int plane;
74
75 for (plane = 0; plane < 3; ++plane) {
76 const unsigned char *buf = img->planes[plane];
77 const int stride = img->stride[plane];
78 const int roffset =
79 (plane > 0) ? row_offset >> img->y_chroma_shift : row_offset;
80 const int coffset =
81 (plane > 0) ? col_offset >> img->x_chroma_shift : col_offset;
82 const int w = (plane > 0) ? ((tile_width >> img->x_chroma_shift) << shift)
83 : (tile_width << shift);
84 const int h =
85 (plane > 0) ? (tile_height >> img->y_chroma_shift) : tile_height;
86 int y;
87
88 // col offset needs to be adjusted for HBD.
89 buf += roffset * stride + (coffset << shift);
90
91 for (y = 0; y < h; ++y) {
92 fwrite(buf, 1, w, file);
93 buf += stride;
94 }
95 }
96 }
97 }
98
99 int main(int argc, char **argv) {
100 FILE *outfile = NULL;
101 aom_codec_ctx_t codec;
102 AvxVideoReader *reader = NULL;
103 const AvxInterface *decoder = NULL;
104 const AvxVideoInfo *info = NULL;
105 int num_references;
106 int num_tile_lists;
107 aom_image_t reference_images[MAX_EXTERNAL_REFERENCES];
108 size_t frame_size = 0;
109 const unsigned char *frame = NULL;
110 int output_format = YUV1D;
111 int i, j, n;
112
113 exec_name = argv[0];
114
115 if (argc < 5) die("Invalid number of arguments.");
116
117 reader = aom_video_reader_open(argv[1]);
118 if (!reader) die("Failed to open %s for reading.", argv[1]);
119
120 if (!(outfile = fopen(argv[2], "wb")))
121 die("Failed to open %s for writing.", argv[2]);
122
123 num_references = (int)strtol(argv[3], NULL, 0);
124 num_tile_lists = (int)strtol(argv[4], NULL, 0);
125
126 if (argc > 5) output_format = (int)strtol(argv[5], NULL, 0);
127 if (output_format < YUV1D || output_format > NV12)
128 die("Output format out of range [0, 2]");
129
130 info = aom_video_reader_get_info(reader);
131
132 decoder = get_aom_decoder_by_fourcc(info->codec_fourcc);
133 if (!decoder) die("Unknown input codec.");
134 printf("Using %s\n", aom_codec_iface_name(decoder->codec_interface()));
135
136 if (aom_codec_dec_init(&codec, decoder->codec_interface(), NULL, 0))
137 die_codec(&codec, "Failed to initialize decoder.");
138
139 if (aom_codec_control(&codec, AV1D_SET_IS_ANNEXB, info->is_annexb)) {
140 die("Failed to set annex b status");
141 }
142
143 // Decode anchor frames.
144 aom_codec_control_(&codec, AV1_SET_TILE_MODE, 0);
145 for (i = 0; i < num_references; ++i) {
146 aom_video_reader_read_frame(reader);
147 frame = aom_video_reader_get_frame(reader, &frame_size);
148 if (aom_codec_decode(&codec, frame, frame_size, NULL))
149 die_codec(&codec, "Failed to decode frame.");
150
151 if (i == 0) {
152 aom_img_fmt_t ref_fmt = 0;
153 if (aom_codec_control(&codec, AV1D_GET_IMG_FORMAT, &ref_fmt))
154 die_codec(&codec, "Failed to get the image format");
155
156 int frame_res[2];
157 if (aom_codec_control(&codec, AV1D_GET_FRAME_SIZE, frame_res))
158 die_codec(&codec, "Failed to get the image frame size");
159
160 // Allocate memory to store decoded references. Allocate memory with the
161 // border so that it can be used as a reference.
162 for (j = 0; j < num_references; j++) {
163 unsigned int border = AOM_DEC_BORDER_IN_PIXELS;
164 if (!aom_img_alloc_with_border(&reference_images[j], ref_fmt,
165 frame_res[0], frame_res[1], 32, 8,
166 border)) {
167 die("Failed to allocate references.");
168 }
169 }
170 }
171
172 if (aom_codec_control(&codec, AV1_COPY_NEW_FRAME_IMAGE,
173 &reference_images[i]))
174 die_codec(&codec, "Failed to copy decoded reference frame");
175
176 aom_codec_iter_t iter = NULL;
177 aom_image_t *img = NULL;
178 while ((img = aom_codec_get_frame(&codec, &iter)) != NULL) {
179 char name[1024];
180 snprintf(name, sizeof(name), "ref_%d.yuv", i);
181 printf("writing ref image to %s, %d, %d\n", name, img->d_w, img->d_h);
182 FILE *ref_file = fopen(name, "wb");
183 aom_img_write(img, ref_file);
184 fclose(ref_file);
185 }
186 }
187
188 // Decode the lightfield.
189 aom_codec_control_(&codec, AV1_SET_TILE_MODE, 1);
190
191 // Set external references.
192 av1_ext_ref_frame_t set_ext_ref = { &reference_images[0], num_references };
193 aom_codec_control_(&codec, AV1D_SET_EXT_REF_PTR, &set_ext_ref);
194 // Must decode the camera frame header first.
195 aom_video_reader_read_frame(reader);
196 frame = aom_video_reader_get_frame(reader, &frame_size);
197 if (aom_codec_decode(&codec, frame, frame_size, NULL))
198 die_codec(&codec, "Failed to decode the frame.");
199 // Decode tile lists one by one.
200 for (n = 0; n < num_tile_lists; n++) {
201 aom_video_reader_read_frame(reader);
202 frame = aom_video_reader_get_frame(reader, &frame_size);
203
204 if (aom_codec_decode(&codec, frame, frame_size, NULL))
205 die_codec(&codec, "Failed to decode the tile list.");
206 aom_codec_iter_t iter = NULL;
207 aom_image_t *img = aom_codec_get_frame(&codec, &iter);
208 if (!img) die_codec(&codec, "Failed to get frame.");
209
210 if (output_format == YUV1D)
211 // write the tile to the output file in 1D format.
212 write_tile_yuv1d(&codec, img, outfile);
213 else if (output_format == YUV)
214 aom_img_write(img, outfile);
215 else
216 // NV12 output format
217 aom_img_write_nv12(img, outfile);
218 }
219
220 for (i = 0; i < num_references; i++) aom_img_free(&reference_images[i]);
221 if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
222 aom_video_reader_close(reader);
223 fclose(outfile);
224
225 return EXIT_SUCCESS;
226 }
aom_image::fmt
aom_img_fmt_t fmt
Definition: aom_image.h:152
aom_codec_decode
aom_codec_err_t aom_codec_decode(aom_codec_ctx_t *ctx, const uint8_t *data, size_t data_sz, void *user_priv)
Decode data.
aom_image::planes
unsigned char * planes[3]
Definition: aom_image.h:182
aom_img_fmt_t
enum aom_img_fmt aom_img_fmt_t
List of supported image formats.
aom_image::d_h
unsigned int d_h
Definition: aom_image.h:167
aom_codec_ctx
Codec context structure.
Definition: aom_codec.h:211
AV1_SET_TILE_MODE
@ AV1_SET_TILE_MODE
Definition: aomdx.h:196
aom_codec_iter_t
const typedef void * aom_codec_iter_t
Iterator.
Definition: aom_codec.h:201
aom_img_free
void aom_img_free(aom_image_t *img)
Close an image descriptor.
aom_codec_control_
aom_codec_err_t aom_codec_control_(aom_codec_ctx_t *ctx, int ctrl_id,...)
Control algorithm.
aom_image::y_chroma_shift
unsigned int y_chroma_shift
Definition: aom_image.h:175
aom_codec_iface_name
const char * aom_codec_iface_name(aom_codec_iface_t *iface)
Return the name for a given interface.
aom_codec_destroy
aom_codec_err_t aom_codec_destroy(aom_codec_ctx_t *ctx)
Destroy a codec instance.
AV1_COPY_NEW_FRAME_IMAGE
@ AV1_COPY_NEW_FRAME_IMAGE
Definition: aom.h:66
aom_img_alloc_with_border
aom_image_t * aom_img_alloc_with_border(aom_image_t *img, aom_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align, unsigned int size_align, unsigned int border)
Open a descriptor, allocating storage for the underlying image with a border.
aom_codec_control
#define aom_codec_control(ctx, id, data)
aom_codec_control wrapper macro
Definition: aom_codec.h:421
AV1D_GET_TILE_COUNT
@ AV1D_GET_TILE_COUNT
Definition: aomdx.h:145
aom_decoder.h
Describes the decoder algorithm interface to applications.
aom_image::x_chroma_shift
unsigned int x_chroma_shift
Definition: aom_image.h:174
AV1D_SET_IS_ANNEXB
@ AV1D_SET_IS_ANNEXB
Definition: aomdx.h:222
aom_codec_dec_init
#define aom_codec_dec_init(ctx, iface, cfg, flags)
Convenience macro for aom_codec_dec_init_ver()
Definition: aom_decoder.h:134
av1_ext_ref_frame
Structure to hold the external reference frame pointer.
Definition: aomdx.h:96
AV1D_GET_IMG_FORMAT
@ AV1D_GET_IMG_FORMAT
Definition: aomdx.h:139
AV1D_SET_EXT_REF_PTR
@ AV1D_SET_EXT_REF_PTR
Definition: aomdx.h:209
aom_codec_get_frame
aom_image_t * aom_codec_get_frame(aom_codec_ctx_t *ctx, aom_codec_iter_t *iter)
Decoded frames iterator.
AV1D_GET_FRAME_SIZE
@ AV1D_GET_FRAME_SIZE
Definition: aomdx.h:128
aom_image::d_w
unsigned int d_w
Definition: aom_image.h:166
aomdx.h
Provides definitions for using AOM or AV1 within the aom Decoder interface.
aom_image
Image Descriptor.
Definition: aom_image.h:151
aom_image::stride
int stride[3]
Definition: aom_image.h:183
AV1D_GET_TILE_SIZE
@ AV1D_GET_TILE_SIZE
Definition: aomdx.h:142
AOM_IMG_FMT_HIGHBITDEPTH
#define AOM_IMG_FMT_HIGHBITDEPTH
Definition: aom_image.h:38