AOMedia AV1 Codec
lightfield_encoder
1 /*
2  * Copyright (c) 2017, 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 Encoder
13 // ==================
14 //
15 // This is an example of a simple lightfield encoder. It builds upon the
16 // twopass_encoder.c example. It takes an input file in YV12 format,
17 // treating it as a planar lightfield instead of a video. The img_width
18 // and img_height arguments are the dimensions of the lightfield images,
19 // while the lf_width and lf_height arguments are the number of
20 // lightfield images in each dimension. The lf_blocksize determines the
21 // number of reference images used for MCP. For example, 5 means that there
22 // is a reference image for every 5x5 lightfield image block. All images
23 // within a block will use the center image in that block as the reference
24 // image for MCP.
25 // Run "make test" to download lightfield test data: vase10x10.yuv.
26 // Run lightfield encoder to encode whole lightfield:
27 // examples/lightfield_encoder 1024 1024 vase10x10.yuv vase10x10.ivf 10 10 5
28 
29 // Note: In bitstream.c and encoder.c, define EXT_TILE_DEBUG as 1 will print
30 // out the uncompressed header and the frame contexts, which can be used to
31 // test the bit exactness of the headers and the frame contexts for large scale
32 // tile coded frames.
33 
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 
38 #include "aom/aom_encoder.h"
39 #include "aom/aomcx.h"
40 #include "aom_scale/yv12config.h"
41 #include "av1/common/enums.h"
42 #include "common/tools_common.h"
43 #include "common/video_writer.h"
44 
45 static const char *exec_name;
46 
47 void usage_exit(void) {
48  fprintf(stderr,
49  "Usage: %s <img_width> <img_height> <infile> <outfile> "
50  "<lf_width> <lf_height> <lf_blocksize>\n",
51  exec_name);
52  exit(EXIT_FAILURE);
53 }
54 
55 static int img_size_bytes(aom_image_t *img) {
56  int image_size_bytes = 0;
57  int plane;
58  for (plane = 0; plane < 3; ++plane) {
59  const int w = aom_img_plane_width(img, plane) *
60  ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
61  const int h = aom_img_plane_height(img, plane);
62  image_size_bytes += w * h;
63  }
64  return image_size_bytes;
65 }
66 
67 static int get_frame_stats(aom_codec_ctx_t *ctx, const aom_image_t *img,
68  aom_codec_pts_t pts, unsigned int duration,
70  aom_fixed_buf_t *stats) {
71  int got_pkts = 0;
72  aom_codec_iter_t iter = NULL;
73  const aom_codec_cx_pkt_t *pkt = NULL;
74  const aom_codec_err_t res = aom_codec_encode(ctx, img, pts, duration, flags);
75  if (res != AOM_CODEC_OK) die_codec(ctx, "Failed to get frame stats.");
76 
77  while ((pkt = aom_codec_get_cx_data(ctx, &iter)) != NULL) {
78  got_pkts = 1;
79 
80  if (pkt->kind == AOM_CODEC_STATS_PKT) {
81  const uint8_t *const pkt_buf = pkt->data.twopass_stats.buf;
82  const size_t pkt_size = pkt->data.twopass_stats.sz;
83  stats->buf = realloc(stats->buf, stats->sz + pkt_size);
84  memcpy((uint8_t *)stats->buf + stats->sz, pkt_buf, pkt_size);
85  stats->sz += pkt_size;
86  }
87  }
88 
89  return got_pkts;
90 }
91 
92 static int encode_frame(aom_codec_ctx_t *ctx, const aom_image_t *img,
93  aom_codec_pts_t pts, unsigned int duration,
94  aom_enc_frame_flags_t flags, AvxVideoWriter *writer) {
95  int got_pkts = 0;
96  aom_codec_iter_t iter = NULL;
97  const aom_codec_cx_pkt_t *pkt = NULL;
98  const aom_codec_err_t res = aom_codec_encode(ctx, img, pts, duration, flags);
99  if (res != AOM_CODEC_OK) die_codec(ctx, "Failed to encode frame.");
100 
101  while ((pkt = aom_codec_get_cx_data(ctx, &iter)) != NULL) {
102  got_pkts = 1;
103  if (pkt->kind == AOM_CODEC_CX_FRAME_PKT) {
104  const int keyframe = (pkt->data.frame.flags & AOM_FRAME_IS_KEY) != 0;
105 
106  if (!aom_video_writer_write_frame(writer, pkt->data.frame.buf,
107  pkt->data.frame.sz,
108  pkt->data.frame.pts))
109  die_codec(ctx, "Failed to write compressed frame.");
110  printf(keyframe ? "K" : ".");
111  fflush(stdout);
112  }
113  }
114 
115  return got_pkts;
116 }
117 
118 static void get_raw_image(aom_image_t **frame_to_encode, aom_image_t *raw,
119  aom_image_t *raw_shift) {
120  if (FORCE_HIGHBITDEPTH_DECODING) {
121  // Need to allocate larger buffer to use hbd internal.
122  int input_shift = 0;
123  aom_img_upshift(raw_shift, raw, input_shift);
124  *frame_to_encode = raw_shift;
125  } else {
126  *frame_to_encode = raw;
127  }
128 }
129 
130 static aom_fixed_buf_t pass0(aom_image_t *raw, FILE *infile,
131  aom_codec_iface_t *encoder,
132  const aom_codec_enc_cfg_t *cfg, int lf_width,
133  int lf_height, int lf_blocksize, int flags,
134  aom_image_t *raw_shift) {
135  aom_codec_ctx_t codec;
136  int frame_count = 0;
137  int image_size_bytes = img_size_bytes(raw);
138  int u_blocks, v_blocks;
139  int bu, bv;
140  aom_fixed_buf_t stats = { NULL, 0 };
141  aom_image_t *frame_to_encode;
142 
143  if (aom_codec_enc_init(&codec, encoder, cfg, flags))
144  die("Failed to initialize encoder");
146  die_codec(&codec, "Failed to turn off auto altref");
148  die_codec(&codec, "Failed to set frame parallel decoding");
149 
150  // How many reference images we need to encode.
151  u_blocks = (lf_width + lf_blocksize - 1) / lf_blocksize;
152  v_blocks = (lf_height + lf_blocksize - 1) / lf_blocksize;
153 
154  printf("\n First pass: ");
155 
156  for (bv = 0; bv < v_blocks; ++bv) {
157  for (bu = 0; bu < u_blocks; ++bu) {
158  const int block_u_min = bu * lf_blocksize;
159  const int block_v_min = bv * lf_blocksize;
160  int block_u_end = (bu + 1) * lf_blocksize;
161  int block_v_end = (bv + 1) * lf_blocksize;
162  int u_block_size, v_block_size;
163  int block_ref_u, block_ref_v;
164 
165  block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
166  block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
167  u_block_size = block_u_end - block_u_min;
168  v_block_size = block_v_end - block_v_min;
169  block_ref_u = block_u_min + u_block_size / 2;
170  block_ref_v = block_v_min + v_block_size / 2;
171 
172  printf("A%d, ", (block_ref_u + block_ref_v * lf_width));
173  fseek(infile, (block_ref_u + block_ref_v * lf_width) * image_size_bytes,
174  SEEK_SET);
175  aom_img_read(raw, infile);
176  get_raw_image(&frame_to_encode, raw, raw_shift);
177 
178  // Reference frames can be encoded encoded without tiles.
179  ++frame_count;
180  get_frame_stats(&codec, frame_to_encode, frame_count, 1,
186  &stats);
187  }
188  }
189 
191  die_codec(&codec, "Failed to set frame parallel decoding");
192 
193  for (bv = 0; bv < v_blocks; ++bv) {
194  for (bu = 0; bu < u_blocks; ++bu) {
195  const int block_u_min = bu * lf_blocksize;
196  const int block_v_min = bv * lf_blocksize;
197  int block_u_end = (bu + 1) * lf_blocksize;
198  int block_v_end = (bv + 1) * lf_blocksize;
199  int u, v;
200  block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
201  block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
202  for (v = block_v_min; v < block_v_end; ++v) {
203  for (u = block_u_min; u < block_u_end; ++u) {
204  printf("C%d, ", (u + v * lf_width));
205  fseek(infile, (u + v * lf_width) * image_size_bytes, SEEK_SET);
206  aom_img_read(raw, infile);
207  get_raw_image(&frame_to_encode, raw, raw_shift);
208 
209  ++frame_count;
210  get_frame_stats(&codec, frame_to_encode, frame_count, 1,
216  &stats);
217  }
218  }
219  }
220  }
221  // Flush encoder.
222  // No ARF, this should not be needed.
223  while (get_frame_stats(&codec, NULL, frame_count, 1, 0, &stats)) {
224  }
225 
226  if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
227 
228  printf("\nFirst pass complete. Processed %d frames.\n", frame_count);
229 
230  return stats;
231 }
232 
233 static void pass1(aom_image_t *raw, FILE *infile, const char *outfile_name,
234  aom_codec_iface_t *encoder, aom_codec_enc_cfg_t *cfg,
235  int lf_width, int lf_height, int lf_blocksize, int flags,
236  aom_image_t *raw_shift) {
237  AvxVideoInfo info = { get_fourcc_by_aom_encoder(encoder),
238  cfg->g_w,
239  cfg->g_h,
240  { cfg->g_timebase.num, cfg->g_timebase.den },
241  0 };
242  AvxVideoWriter *writer = NULL;
243  aom_codec_ctx_t codec;
244  int frame_count = 0;
245  int image_size_bytes = img_size_bytes(raw);
246  int bu, bv;
247  int u_blocks, v_blocks;
248  aom_image_t *frame_to_encode;
249  aom_image_t reference_images[MAX_EXTERNAL_REFERENCES];
250  int reference_image_num = 0;
251  int i;
252 
253  writer = aom_video_writer_open(outfile_name, kContainerIVF, &info);
254  if (!writer) die("Failed to open %s for writing", outfile_name);
255 
256  if (aom_codec_enc_init(&codec, encoder, cfg, flags))
257  die("Failed to initialize encoder");
259  die_codec(&codec, "Failed to turn off auto altref");
261  die_codec(&codec, "Failed to set frame parallel decoding");
263  die_codec(&codec, "Failed to enable encoder ext_tile debug");
264  if (aom_codec_control(&codec, AOME_SET_CPUUSED, 3))
265  die_codec(&codec, "Failed to set cpu-used");
266 
267  // Note: The superblock is a sequence parameter and has to be the same for 1
268  // sequence. In lightfield application, must choose the superblock size(either
269  // 64x64 or 128x128) before the encoding starts. Otherwise, the default is
270  // AOM_SUPERBLOCK_SIZE_DYNAMIC, and the superblock size will be set to 64x64
271  // internally.
274  die_codec(&codec, "Failed to set SB size");
275 
276  u_blocks = (lf_width + lf_blocksize - 1) / lf_blocksize;
277  v_blocks = (lf_height + lf_blocksize - 1) / lf_blocksize;
278 
279  reference_image_num = u_blocks * v_blocks;
280  // Set the max gf group length so the references are guaranteed to be in
281  // a different gf group than any of the regular frames. This avoids using
282  // both vbr and constant quality mode in a single group. The number of
283  // references now cannot surpass 17 because of the enforced MAX_GF_INTERVAL of
284  // 16. If it is necessary to exceed this reference frame limit, one will have
285  // to do some additional handling to ensure references are in separate gf
286  // groups from the regular frames.
288  reference_image_num - 1))
289  die_codec(&codec, "Failed to set max gf interval");
291  if (FORCE_HIGHBITDEPTH_DECODING) ref_fmt |= AOM_IMG_FMT_HIGHBITDEPTH;
292  // Allocate memory with the border so that it can be used as a reference.
293  int border_in_pixels =
294  (codec.config.enc->rc_resize_mode || codec.config.enc->rc_superres_mode)
295  ? AOM_BORDER_IN_PIXELS
296  : AOM_ENC_NO_SCALE_BORDER;
297  for (i = 0; i < reference_image_num; i++) {
298  if (!aom_img_alloc_with_border(&reference_images[i], ref_fmt, cfg->g_w,
299  cfg->g_h, 32, 8, border_in_pixels)) {
300  die("Failed to allocate image.");
301  }
302  }
303 
304  printf("\n Second pass: ");
305 
306  // Encode reference images first.
307  printf("Encoding Reference Images\n");
308  for (bv = 0; bv < v_blocks; ++bv) {
309  for (bu = 0; bu < u_blocks; ++bu) {
310  const int block_u_min = bu * lf_blocksize;
311  const int block_v_min = bv * lf_blocksize;
312  int block_u_end = (bu + 1) * lf_blocksize;
313  int block_v_end = (bv + 1) * lf_blocksize;
314  int u_block_size, v_block_size;
315  int block_ref_u, block_ref_v;
316 
317  block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
318  block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
319  u_block_size = block_u_end - block_u_min;
320  v_block_size = block_v_end - block_v_min;
321  block_ref_u = block_u_min + u_block_size / 2;
322  block_ref_v = block_v_min + v_block_size / 2;
323 
324  printf("A%d, ", (block_ref_u + block_ref_v * lf_width));
325  fseek(infile, (block_ref_u + block_ref_v * lf_width) * image_size_bytes,
326  SEEK_SET);
327  aom_img_read(raw, infile);
328 
329  get_raw_image(&frame_to_encode, raw, raw_shift);
330 
331  // Reference frames may be encoded without tiles.
332  ++frame_count;
333  printf("Encoding reference image %d of %d\n", bv * u_blocks + bu,
334  u_blocks * v_blocks);
335  encode_frame(&codec, frame_to_encode, frame_count, 1,
341  writer);
342 
344  &reference_images[frame_count - 1]))
345  die_codec(&codec, "Failed to copy decoder reference frame");
346  }
347  }
348 
349  cfg->large_scale_tile = 1;
350  // Fixed q encoding for camera frames.
351  cfg->rc_end_usage = AOM_Q;
352  if (aom_codec_enc_config_set(&codec, cfg))
353  die_codec(&codec, "Failed to configure encoder");
354 
355  // The fixed q value used in encoding.
356  if (aom_codec_control(&codec, AOME_SET_CQ_LEVEL, 36))
357  die_codec(&codec, "Failed to set cq level");
359  die_codec(&codec, "Failed to set frame parallel decoding");
361  die_codec(&codec, "Failed to turn on single tile decoding");
362  // Set tile_columns and tile_rows to MAX values, which guarantees the tile
363  // size of 64 x 64 pixels(i.e. 1 SB) for <= 4k resolution.
365  die_codec(&codec, "Failed to set tile width");
366  if (aom_codec_control(&codec, AV1E_SET_TILE_ROWS, 6))
367  die_codec(&codec, "Failed to set tile height");
368 
369  for (bv = 0; bv < v_blocks; ++bv) {
370  for (bu = 0; bu < u_blocks; ++bu) {
371  const int block_u_min = bu * lf_blocksize;
372  const int block_v_min = bv * lf_blocksize;
373  int block_u_end = (bu + 1) * lf_blocksize;
374  int block_v_end = (bv + 1) * lf_blocksize;
375  int u, v;
376  block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
377  block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
378  for (v = block_v_min; v < block_v_end; ++v) {
379  for (u = block_u_min; u < block_u_end; ++u) {
380  av1_ref_frame_t ref;
381  ref.idx = 0;
382  ref.use_external_ref = 1;
383  ref.img = reference_images[bv * u_blocks + bu];
384  if (aom_codec_control(&codec, AV1_SET_REFERENCE, &ref))
385  die_codec(&codec, "Failed to set reference frame");
386 
387  printf("C%d, ", (u + v * lf_width));
388  fseek(infile, (u + v * lf_width) * image_size_bytes, SEEK_SET);
389  aom_img_read(raw, infile);
390  get_raw_image(&frame_to_encode, raw, raw_shift);
391 
392  ++frame_count;
393  printf("Encoding image %d of %d\n",
394  frame_count - (u_blocks * v_blocks), lf_width * lf_height);
395  encode_frame(&codec, frame_to_encode, frame_count, 1,
401  writer);
402  }
403  }
404  }
405  }
406 
407  // Flush encoder.
408  // No ARF, this should not be needed.
409  while (encode_frame(&codec, NULL, -1, 1, 0, writer)) {
410  }
411 
412  for (i = 0; i < reference_image_num; i++) aom_img_free(&reference_images[i]);
413 
414  if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
415 
416  // Modify large_scale_file fourcc.
417  if (cfg->large_scale_tile == 1)
418  aom_video_writer_set_fourcc(writer, LST_FOURCC);
419  aom_video_writer_close(writer);
420 
421  printf("\nSecond pass complete. Processed %d frames.\n", frame_count);
422 }
423 
424 int main(int argc, char **argv) {
425  FILE *infile = NULL;
426  int w, h;
427  // The number of lightfield images in the u and v dimensions.
428  int lf_width, lf_height;
429  // Defines how many images refer to the same reference image for MCP.
430  // lf_blocksize X lf_blocksize images will all use the reference image
431  // in the middle of the block of images.
432  int lf_blocksize;
433  aom_codec_ctx_t codec;
435  aom_image_t raw;
436  aom_image_t raw_shift;
437  aom_codec_err_t res;
438  aom_fixed_buf_t stats;
439  int flags = 0;
440 
441  const int fps = 30;
442  const int bitrate = 200; // kbit/s
443  const char *const width_arg = argv[1];
444  const char *const height_arg = argv[2];
445  const char *const infile_arg = argv[3];
446  const char *const outfile_arg = argv[4];
447  const char *const lf_width_arg = argv[5];
448  const char *const lf_height_arg = argv[6];
449  const char *lf_blocksize_arg = argv[7];
450  exec_name = argv[0];
451 
452  if (argc < 8) die("Invalid number of arguments");
453 
454  aom_codec_iface_t *encoder = get_aom_encoder_by_short_name("av1");
455  if (!encoder) die("Unsupported codec.");
456 
457  w = (int)strtol(width_arg, NULL, 0);
458  h = (int)strtol(height_arg, NULL, 0);
459  lf_width = (int)strtol(lf_width_arg, NULL, 0);
460  lf_height = (int)strtol(lf_height_arg, NULL, 0);
461  lf_blocksize = (int)strtol(lf_blocksize_arg, NULL, 0);
462  lf_blocksize = lf_blocksize < lf_width ? lf_blocksize : lf_width;
463  lf_blocksize = lf_blocksize < lf_height ? lf_blocksize : lf_height;
464 
465  if (w <= 0 || h <= 0 || (w % 2) != 0 || (h % 2) != 0)
466  die("Invalid frame size: %dx%d", w, h);
467  if (lf_width <= 0 || lf_height <= 0)
468  die("Invalid lf_width and/or lf_height: %dx%d", lf_width, lf_height);
469  if (lf_blocksize <= 0) die("Invalid lf_blocksize: %d", lf_blocksize);
470 
471  if (!aom_img_alloc(&raw, AOM_IMG_FMT_I420, w, h, 32)) {
472  die("Failed to allocate image.");
473  }
474  if (FORCE_HIGHBITDEPTH_DECODING) {
475  // Need to allocate larger buffer to use hbd internal.
477  32);
478  }
479 
480  printf("Using %s\n", aom_codec_iface_name(encoder));
481 
482  // Configuration
483  res = aom_codec_enc_config_default(encoder, &cfg, 0);
484  if (res) die_codec(&codec, "Failed to get default codec config.");
485 
486  cfg.g_w = w;
487  cfg.g_h = h;
488  cfg.g_timebase.num = 1;
489  cfg.g_timebase.den = fps;
490  cfg.rc_target_bitrate = bitrate;
491  cfg.g_error_resilient = 0; // This is required.
492  cfg.g_lag_in_frames = 0; // need to set this since default is 19.
493  cfg.kf_mode = AOM_KF_DISABLED;
494  cfg.large_scale_tile = 0; // Only set it to 1 for camera frame encoding.
495  cfg.g_bit_depth = AOM_BITS_8;
496  flags |= (cfg.g_bit_depth > AOM_BITS_8 || FORCE_HIGHBITDEPTH_DECODING)
498  : 0;
499 
500  if (!(infile = fopen(infile_arg, "rb")))
501  die("Failed to open %s for reading", infile_arg);
502 
503  // Pass 0
505  stats = pass0(&raw, infile, encoder, &cfg, lf_width, lf_height, lf_blocksize,
506  flags, &raw_shift);
507 
508  // Pass 1
509  rewind(infile);
510  cfg.g_pass = AOM_RC_LAST_PASS;
511  cfg.rc_twopass_stats_in = stats;
512  pass1(&raw, infile, outfile_arg, encoder, &cfg, lf_width, lf_height,
513  lf_blocksize, flags, &raw_shift);
514  free(stats.buf);
515 
516  if (FORCE_HIGHBITDEPTH_DECODING) aom_img_free(&raw_shift);
517  aom_img_free(&raw);
518  fclose(infile);
519 
520  return EXIT_SUCCESS;
521 }
void * buf
Definition: aom_encoder.h:77
union aom_codec_ctx::@0 config
Operation completed without error.
Definition: aom_codec.h:157
Definition: aom_encoder.h:161
unsigned int g_w
Width of the frame.
Definition: aom_encoder.h:406
aom_superres_mode rc_superres_mode
Frame super-resolution scaling mode.
Definition: aom_encoder.h:548
unsigned int rc_target_bitrate
Target data rate.
Definition: aom_encoder.h:618
int64_t aom_codec_pts_t
Time Stamp Type.
Definition: aom_codec.h:235
Describes the encoder algorithm interface to applications.
#define aom_codec_enc_init(ctx, iface, cfg, flags)
Convenience macro for aom_codec_enc_init_ver()
Definition: aom_encoder.h:931
Encoder configuration structure.
Definition: aom_encoder.h:367
int idx
Definition: aom.h:90
enum aom_kf_mode kf_mode
Keyframe placement mode.
Definition: aom_encoder.h:742
aom_fixed_buf_t rc_twopass_stats_in
Two-pass stats buffer.
Definition: aom_encoder.h:605
enum aom_img_fmt aom_img_fmt_t
List of supported image formats.
aom_codec_err_t aom_codec_enc_config_default(aom_codec_iface_t *iface, aom_codec_enc_cfg_t *cfg, unsigned int usage)
Get the default configuration for a usage.
Codec control function to set constrained / constant quality level, unsigned int parameter.
Definition: aomcx.h:281
aom_codec_er_flags_t g_error_resilient
Enable error resilient modes.
Definition: aom_encoder.h:472
Provides definitions for using AOM or AV1 encoder algorithm within the aom Codec Interface.
#define AOM_EFLAG_NO_UPD_LAST
Don&#39;t update the last frame.
Definition: aomcx.h:120
Codec context structure.
Definition: aom_codec.h:298
Codec control function to enable frame parallel decoding feature, unsigned int parameter.
Definition: aomcx.h:420
#define AOM_IMG_FMT_HIGHBITDEPTH
Definition: aom_image.h:38
Image Descriptor.
Definition: aom_image.h:171
Codec control function to set number of tile columns. unsigned int parameter.
Definition: aomcx.h:369
aom_image_t * aom_img_alloc(aom_image_t *img, aom_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align)
Open a descriptor, allocating storage for the underlying image.
enum aom_rc_mode rc_end_usage
Rate control algorithm to use.
Definition: aom_encoder.h:598
Generic fixed size buffer structure.
Definition: aom_encoder.h:76
const aom_codec_cx_pkt_t * aom_codec_get_cx_data(aom_codec_ctx_t *ctx, aom_codec_iter_t *iter)
Encoded data iterator.
aom_codec_err_t aom_codec_encode(aom_codec_ctx_t *ctx, const aom_image_t *img, aom_codec_pts_t pts, unsigned long duration, aom_enc_frame_flags_t flags)
Encode a frame.
#define AOM_EFLAG_NO_REF_LAST3
Don&#39;t reference the last3 frame.
Definition: aomcx.h:84
Definition: aom_codec.h:319
const struct aom_codec_iface aom_codec_iface_t
Codec interface structure.
Definition: aom_codec.h:254
Codec control function to write a frame into a reference buffer.
Definition: aom.h:57
Codec control function to enable EXT_TILE_DEBUG in AV1 encoder, unsigned int parameter.
Definition: aomcx.h:1284
const char * aom_codec_iface_name(aom_codec_iface_t *iface)
Return the name for a given interface.
struct aom_rational g_timebase
Stream timebase units.
Definition: aom_encoder.h:464
aom_codec_err_t aom_codec_destroy(aom_codec_ctx_t *ctx)
Destroy a codec instance.
Definition: aom_encoder.h:99
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.
enum aom_codec_cx_pkt_kind kind
Definition: aom_encoder.h:111
void aom_img_free(aom_image_t *img)
Close an image descriptor.
Codec control function to set minimum interval between GF/ARF frames, unsigned int parameter...
Definition: aomcx.h:583
struct aom_codec_cx_pkt::@1::@2 frame
Definition: aom_encoder.h:98
#define AOM_EFLAG_NO_UPD_GF
Don&#39;t update the golden frame.
Definition: aomcx.h:127
unsigned int rc_resize_mode
Mode for spatial resampling, if supported by the codec.
Definition: aom_encoder.h:524
int aom_img_plane_width(const aom_image_t *img, int plane)
Get the width of a plane.
#define AOM_EFLAG_NO_REF_GF
Don&#39;t reference the golden frame.
Definition: aomcx.h:91
#define AOM_CODEC_USE_HIGHBITDEPTH
Make the encoder output one partition at a time.
Definition: aom_encoder.h:70
unsigned int large_scale_tile
Tile coding mode.
Definition: aom_encoder.h:790
Codec control function to set encoder internal speed settings, int parameter.
Definition: aomcx.h:213
aom_codec_err_t aom_codec_enc_config_set(aom_codec_ctx_t *ctx, const aom_codec_enc_cfg_t *cfg)
Set or change configuration.
AV1 specific reference frame data struct.
Definition: aom.h:89
Codec control function to copy the new frame to an external buffer.
Definition: aom.h:76
int aom_img_plane_height(const aom_image_t *img, int plane)
Get the height of a plane.
#define AOM_EFLAG_NO_UPD_ARF
Don&#39;t update the alternate reference frame.
Definition: aomcx.h:134
Definition: aom_codec.h:331
Codec control function to enable automatic set and use alf frames, unsigned int parameter.
Definition: aomcx.h:221
const void * aom_codec_iter_t
Iterator.
Definition: aom_codec.h:288
#define AOM_FRAME_IS_KEY
Definition: aom_codec.h:271
#define AOM_EFLAG_NO_REF_ARF2
Don&#39;t reference the alt2 reference frame.
Definition: aomcx.h:113
int use_external_ref
Definition: aom.h:91
#define AOM_EFLAG_NO_UPD_ENTROPY
Disable entropy update.
Definition: aomcx.h:140
Codec control function to set number of tile rows, unsigned int parameter.
Definition: aomcx.h:387
aom_codec_err_t
Algorithm return codes.
Definition: aom_codec.h:155
aom_fixed_buf_t twopass_stats
Definition: aom_encoder.h:128
Definition: aom_encoder.h:169
int den
Definition: aom_encoder.h:154
aom_image_t img
Definition: aom.h:92
Encoder output packet.
Definition: aom_encoder.h:110
#define AOM_EFLAG_NO_REF_ARF
Don&#39;t reference the alternate reference frame.
Definition: aomcx.h:99
int num
Definition: aom_encoder.h:153
Definition: aom_image.h:45
unsigned int g_lag_in_frames
Allow lagged encoding.
Definition: aom_encoder.h:493
Codec control function to set the single tile decoding mode, unsigned int parameter.
Definition: aomcx.h:1131
long aom_enc_frame_flags_t
Encoded Frame Flags.
Definition: aom_encoder.h:357
union aom_codec_cx_pkt::@1 data
aom_bit_depth_t g_bit_depth
Bit-depth of the codec.
Definition: aom_encoder.h:442
#define AOM_EFLAG_NO_REF_LAST2
Don&#39;t reference the last2 frame.
Definition: aomcx.h:77
size_t sz
Definition: aom_encoder.h:78
Codec control function to set intended superblock size, unsigned int parameter.
Definition: aomcx.h:636
Definition: aom_encoder.h:160
Definition: aom_encoder.h:183
enum aom_enc_pass g_pass
Multi-pass Encoding Mode.
Definition: aom_encoder.h:479
aom_codec_err_t aom_codec_control(aom_codec_ctx_t *ctx, int ctrl_id,...)
Algorithm Control.
unsigned int g_h
Height of the frame.
Definition: aom_encoder.h:415
aom_img_fmt_t fmt
Definition: aom_image.h:172
#define AOM_EFLAG_NO_REF_BWD
Don&#39;t reference the bwd reference frame.
Definition: aomcx.h:106