aom_cx_set_ref.c 14.4 KB
Newer Older
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
/*
 * Copyright (c) 2016, 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.
 */

// AV1 Set Reference Frame
// ============================
//
// This is an example demonstrating how to overwrite the AV1 encoder's
// internal reference frame. In the sample we set the last frame to the
// current frame. This technique could be used to bounce between two cameras.
//
// The decoder would also have to set the reference frame to the same value
// on the same frame, or the video will become corrupt. The 'test_decode'
// variable is set to 1 in this example that tests if the encoder and decoder
// results are matching.
//
// Usage
// -----
// This example encodes a raw video. And the last argument passed in specifies
// the frame number to update the reference frame on. For example, run
// examples/aom_cx_set_ref vp10 352 288 in.yuv out.ivf 4 30
// The parameter is parsed as follows:
//
//
// Extra Variables
// ---------------
// This example maintains the frame number passed on the command line
// in the `update_frame_num` variable.
//
//
// Configuration
// -------------
//
// The reference frame is updated on the frame specified on the command
// line.
//
// Observing The Effects
// ---------------------
// The encoder and decoder results should be matching when the same reference
// frame setting operation is done in both encoder and decoder. Otherwise,
// the encoder/decoder mismatch would be seen.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "aom/aomcx.h"
#include "aom/aom_decoder.h"
#include "aom/aom_encoder.h"

#include "./tools_common.h"
#include "./video_writer.h"

static const char *exec_name;

void usage_exit() {
clang-format's avatar
clang-format committed
64 65
  fprintf(stderr,
          "Usage: %s <codec> <width> <height> <infile> <outfile> "
66 67 68 69 70 71 72 73
          "<frame> <limit(optional)>\n",
          exec_name);
  exit(EXIT_FAILURE);
}

static int compare_img(const aom_image_t *const img1,
                       const aom_image_t *const img2) {
  uint32_t l_w = img1->d_w;
clang-format's avatar
clang-format committed
74
  uint32_t c_w = (img1->d_w + img1->x_chroma_shift) >> img1->x_chroma_shift;
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
  const uint32_t c_h =
      (img1->d_h + img1->y_chroma_shift) >> img1->y_chroma_shift;
  uint32_t i;
  int match = 1;

  match &= (img1->fmt == img2->fmt);
  match &= (img1->d_w == img2->d_w);
  match &= (img1->d_h == img2->d_h);

  for (i = 0; i < img1->d_h; ++i)
    match &= (memcmp(img1->planes[AOM_PLANE_Y] + i * img1->stride[AOM_PLANE_Y],
                     img2->planes[AOM_PLANE_Y] + i * img2->stride[AOM_PLANE_Y],
                     l_w) == 0);

  for (i = 0; i < c_h; ++i)
    match &= (memcmp(img1->planes[AOM_PLANE_U] + i * img1->stride[AOM_PLANE_U],
                     img2->planes[AOM_PLANE_U] + i * img2->stride[AOM_PLANE_U],
                     c_w) == 0);

  for (i = 0; i < c_h; ++i)
    match &= (memcmp(img1->planes[AOM_PLANE_V] + i * img1->stride[AOM_PLANE_V],
                     img2->planes[AOM_PLANE_V] + i * img2->stride[AOM_PLANE_V],
                     c_w) == 0);

  return match;
}

clang-format's avatar
clang-format committed
102
#define mmin(a, b) ((a) < (b) ? (a) : (b))
103
static void find_mismatch(const aom_image_t *const img1,
clang-format's avatar
clang-format committed
104 105
                          const aom_image_t *const img2, int yloc[4],
                          int uloc[4], int vloc[4]) {
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
  const uint32_t bsize = 64;
  const uint32_t bsizey = bsize >> img1->y_chroma_shift;
  const uint32_t bsizex = bsize >> img1->x_chroma_shift;
  const uint32_t c_w =
      (img1->d_w + img1->x_chroma_shift) >> img1->x_chroma_shift;
  const uint32_t c_h =
      (img1->d_h + img1->y_chroma_shift) >> img1->y_chroma_shift;
  int match = 1;
  uint32_t i, j;
  yloc[0] = yloc[1] = yloc[2] = yloc[3] = -1;
  for (i = 0, match = 1; match && i < img1->d_h; i += bsize) {
    for (j = 0; match && j < img1->d_w; j += bsize) {
      int k, l;
      const int si = mmin(i + bsize, img1->d_h) - i;
      const int sj = mmin(j + bsize, img1->d_w) - j;
      for (k = 0; match && k < si; ++k) {
        for (l = 0; match && l < sj; ++l) {
          if (*(img1->planes[AOM_PLANE_Y] +
                (i + k) * img1->stride[AOM_PLANE_Y] + j + l) !=
              *(img2->planes[AOM_PLANE_Y] +
                (i + k) * img2->stride[AOM_PLANE_Y] + j + l)) {
            yloc[0] = i + k;
            yloc[1] = j + l;
            yloc[2] = *(img1->planes[AOM_PLANE_Y] +
                        (i + k) * img1->stride[AOM_PLANE_Y] + j + l);
            yloc[3] = *(img2->planes[AOM_PLANE_Y] +
                        (i + k) * img2->stride[AOM_PLANE_Y] + j + l);
            match = 0;
            break;
          }
        }
      }
    }
  }

  uloc[0] = uloc[1] = uloc[2] = uloc[3] = -1;
  for (i = 0, match = 1; match && i < c_h; i += bsizey) {
    for (j = 0; match && j < c_w; j += bsizex) {
      int k, l;
      const int si = mmin(i + bsizey, c_h - i);
      const int sj = mmin(j + bsizex, c_w - j);
      for (k = 0; match && k < si; ++k) {
        for (l = 0; match && l < sj; ++l) {
          if (*(img1->planes[AOM_PLANE_U] +
                (i + k) * img1->stride[AOM_PLANE_U] + j + l) !=
              *(img2->planes[AOM_PLANE_U] +
                (i + k) * img2->stride[AOM_PLANE_U] + j + l)) {
            uloc[0] = i + k;
            uloc[1] = j + l;
            uloc[2] = *(img1->planes[AOM_PLANE_U] +
                        (i + k) * img1->stride[AOM_PLANE_U] + j + l);
            uloc[3] = *(img2->planes[AOM_PLANE_U] +
                        (i + k) * img2->stride[AOM_PLANE_U] + j + l);
            match = 0;
            break;
          }
        }
      }
    }
  }
  vloc[0] = vloc[1] = vloc[2] = vloc[3] = -1;
  for (i = 0, match = 1; match && i < c_h; i += bsizey) {
    for (j = 0; match && j < c_w; j += bsizex) {
      int k, l;
      const int si = mmin(i + bsizey, c_h - i);
      const int sj = mmin(j + bsizex, c_w - j);
      for (k = 0; match && k < si; ++k) {
        for (l = 0; match && l < sj; ++l) {
          if (*(img1->planes[AOM_PLANE_V] +
                (i + k) * img1->stride[AOM_PLANE_V] + j + l) !=
              *(img2->planes[AOM_PLANE_V] +
                (i + k) * img2->stride[AOM_PLANE_V] + j + l)) {
            vloc[0] = i + k;
            vloc[1] = j + l;
            vloc[2] = *(img1->planes[AOM_PLANE_V] +
                        (i + k) * img1->stride[AOM_PLANE_V] + j + l);
            vloc[3] = *(img2->planes[AOM_PLANE_V] +
                        (i + k) * img2->stride[AOM_PLANE_V] + j + l);
            match = 0;
            break;
          }
        }
      }
    }
  }
}

clang-format's avatar
clang-format committed
193 194
static void testing_decode(aom_codec_ctx_t *encoder, aom_codec_ctx_t *decoder,
                           aom_codec_enc_cfg_t *cfg, unsigned int frame_out,
195 196 197 198
                           int *mismatch_seen) {
  aom_image_t enc_img, dec_img;
  struct av1_ref_frame ref_enc, ref_dec;

clang-format's avatar
clang-format committed
199
  if (*mismatch_seen) return;
200 201 202 203

  ref_enc.idx = 0;
  ref_dec.idx = 0;
  if (aom_codec_control(encoder, AV1_GET_REFERENCE, &ref_enc))
clang-format's avatar
clang-format committed
204
    die_codec(encoder, "Failed to get encoder reference frame");
205 206 207 208 209 210 211 212 213 214 215
  enc_img = ref_enc.img;
  if (aom_codec_control(decoder, AV1_GET_REFERENCE, &ref_dec))
    die_codec(decoder, "Failed to get decoder reference frame");
  dec_img = ref_dec.img;

  if (!compare_img(&enc_img, &dec_img)) {
    int y[4], u[4], v[4];

    *mismatch_seen = 1;

    find_mismatch(&enc_img, &dec_img, y, u, v);
clang-format's avatar
clang-format committed
216 217 218 219 220 221 222
    printf(
        "Encode/decode mismatch on frame %d at"
        " Y[%d, %d] {%d/%d},"
        " U[%d, %d] {%d/%d},"
        " V[%d, %d] {%d/%d}",
        frame_out, y[0], y[1], y[2], y[3], u[0], u[1], u[2], u[3], v[0], v[1],
        v[2], v[3]);
223 224 225 226 227 228
  }

  aom_img_free(&enc_img);
  aom_img_free(&dec_img);
}

clang-format's avatar
clang-format committed
229 230 231 232
static int encode_frame(aom_codec_ctx_t *ecodec, aom_codec_enc_cfg_t *cfg,
                        aom_image_t *img, unsigned int frame_in,
                        AvxVideoWriter *writer, int test_decode,
                        aom_codec_ctx_t *dcodec, unsigned int *frame_out,
233 234 235 236 237
                        int *mismatch_seen) {
  int got_pkts = 0;
  aom_codec_iter_t iter = NULL;
  const aom_codec_cx_pkt_t *pkt = NULL;
  int got_data;
clang-format's avatar
clang-format committed
238 239 240
  const aom_codec_err_t res =
      aom_codec_encode(ecodec, img, frame_in, 1, 0, AOM_DL_GOOD_QUALITY);
  if (res != AOM_CODEC_OK) die_codec(ecodec, "Failed to encode frame");
241 242 243 244 245 246 247 248 249 250

  got_data = 0;

  while ((pkt = aom_codec_get_cx_data(ecodec, &iter)) != NULL) {
    got_pkts = 1;

    if (pkt->kind == AOM_CODEC_CX_FRAME_PKT) {
      const int keyframe = (pkt->data.frame.flags & AOM_FRAME_IS_KEY) != 0;

      if (!(pkt->data.frame.flags & AOM_FRAME_IS_FRAGMENT)) {
clang-format's avatar
clang-format committed
251 252
        *frame_out += 1;
      }
253

clang-format's avatar
clang-format committed
254
      if (!aom_video_writer_write_frame(writer, pkt->data.frame.buf,
255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282
                                        pkt->data.frame.sz,
                                        pkt->data.frame.pts)) {
        die_codec(ecodec, "Failed to write compressed frame");
      }
      printf(keyframe ? "K" : ".");
      fflush(stdout);
      got_data = 1;

      // Decode 1 frame.
      if (test_decode) {
        if (aom_codec_decode(dcodec, pkt->data.frame.buf,
                             (unsigned int)pkt->data.frame.sz, NULL, 0))
          die_codec(dcodec, "Failed to decode frame.");
      }
    }
  }

  // Mismatch checking
  if (got_data && test_decode) {
    testing_decode(ecodec, dcodec, cfg, *frame_out, mismatch_seen);
  }

  return got_pkts;
}

int main(int argc, char **argv) {
  FILE *infile = NULL;
  // Encoder
clang-format's avatar
clang-format committed
283 284
  aom_codec_ctx_t ecodec = { 0 };
  aom_codec_enc_cfg_t cfg = { 0 };
285 286 287
  unsigned int frame_in = 0;
  aom_image_t raw;
  aom_codec_err_t res;
clang-format's avatar
clang-format committed
288
  AvxVideoInfo info = { 0 };
289 290 291 292 293 294 295 296 297 298
  AvxVideoWriter *writer = NULL;
  const AvxInterface *encoder = NULL;

  // Test encoder/decoder mismatch.
  int test_decode = 1;
  // Decoder
  aom_codec_ctx_t dcodec;
  unsigned int frame_out = 0;

  // The frame number to set reference frame on
299
  unsigned int update_frame_num = 0;
300 301 302 303 304 305 306 307 308 309
  int mismatch_seen = 0;

  const int fps = 30;
  const int bitrate = 500;

  const char *codec_arg = NULL;
  const char *width_arg = NULL;
  const char *height_arg = NULL;
  const char *infile_arg = NULL;
  const char *outfile_arg = NULL;
310 311
  const char *update_frame_num_arg = NULL;
  unsigned int limit = 0;
312 313
  exec_name = argv[0];

clang-format's avatar
clang-format committed
314
  if (argc < 7) die("Invalid number of arguments");
315 316 317 318 319 320

  codec_arg = argv[1];
  width_arg = argv[2];
  height_arg = argv[3];
  infile_arg = argv[4];
  outfile_arg = argv[5];
321
  update_frame_num_arg = argv[6];
322 323

  encoder = get_aom_encoder_by_name(codec_arg);
clang-format's avatar
clang-format committed
324
  if (!encoder) die("Unsupported codec.");
325

326
  update_frame_num = (unsigned int)strtoul(update_frame_num_arg, NULL, 0);
327 328 329
  // In AV1, the reference buffers (cm->buffer_pool->frame_bufs[i].buf) are
  // allocated while calling aom_codec_encode(), thus, setting reference for
  // 1st frame isn't supported.
330 331 332
  if (update_frame_num <= 1) {
    die("Couldn't parse frame number '%s'\n", update_frame_num_arg);
  }
333 334

  if (argc > 7) {
335
    limit = (unsigned int)strtoul(argv[7], NULL, 0);
336 337 338 339 340 341 342 343 344 345
    if (update_frame_num > limit)
      die("Update frame number couldn't larger than limit\n");
  }

  info.codec_fourcc = encoder->fourcc;
  info.frame_width = strtol(width_arg, NULL, 0);
  info.frame_height = strtol(height_arg, NULL, 0);
  info.time_base.numerator = 1;
  info.time_base.denominator = fps;

clang-format's avatar
clang-format committed
346 347
  if (info.frame_width <= 0 || info.frame_height <= 0 ||
      (info.frame_width % 2) != 0 || (info.frame_height % 2) != 0) {
348 349 350 351
    die("Invalid frame size: %dx%d", info.frame_width, info.frame_height);
  }

  if (!aom_img_alloc(&raw, AOM_IMG_FMT_I420, info.frame_width,
clang-format's avatar
clang-format committed
352
                     info.frame_height, 1)) {
353 354 355 356 357 358
    die("Failed to allocate image.");
  }

  printf("Using %s\n", aom_codec_iface_name(encoder->codec_interface()));

  res = aom_codec_enc_config_default(encoder->codec_interface(), &cfg, 0);
clang-format's avatar
clang-format committed
359
  if (res) die_codec(&ecodec, "Failed to get default codec config.");
360 361 362 363 364 365 366 367 368

  cfg.g_w = info.frame_width;
  cfg.g_h = info.frame_height;
  cfg.g_timebase.num = info.time_base.numerator;
  cfg.g_timebase.den = info.time_base.denominator;
  cfg.rc_target_bitrate = bitrate;
  cfg.g_lag_in_frames = 3;

  writer = aom_video_writer_open(outfile_arg, kContainerIVF, &info);
clang-format's avatar
clang-format committed
369
  if (!writer) die("Failed to open %s for writing.", outfile_arg);
370 371 372 373 374 375 376 377 378 379 380 381

  if (!(infile = fopen(infile_arg, "rb")))
    die("Failed to open %s for reading.", infile_arg);

  if (aom_codec_enc_init(&ecodec, encoder->codec_interface(), &cfg, 0))
    die_codec(&ecodec, "Failed to initialize encoder");

  // Disable alt_ref.
  if (aom_codec_control(&ecodec, AOME_SET_ENABLEAUTOALTREF, 0))
    die_codec(&ecodec, "Failed to set enable auto alt ref");

  if (test_decode) {
clang-format's avatar
clang-format committed
382 383 384
    const AvxInterface *decoder = get_aom_decoder_by_name(codec_arg);
    if (aom_codec_dec_init(&dcodec, decoder->codec_interface(), NULL, 0))
      die_codec(&dcodec, "Failed to initialize decoder.");
385 386 387 388
  }

  // Encode frames.
  while (aom_img_read(&raw, infile)) {
clang-format's avatar
clang-format committed
389
    if (limit && frame_in >= limit) break;
390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406
    if (update_frame_num > 1 && frame_out + 1 == update_frame_num) {
      aom_ref_frame_t ref;
      ref.frame_type = AOM_LAST_FRAME;
      ref.img = raw;
      // Set reference frame in encoder.
      if (aom_codec_control(&ecodec, AOM_SET_REFERENCE, &ref))
        die_codec(&ecodec, "Failed to set reference frame");
      printf(" <SET_REF>");

      // If set_reference in decoder is commented out, the enc/dec mismatch
      // would be seen.
      if (test_decode) {
        if (aom_codec_control(&dcodec, AOM_SET_REFERENCE, &ref))
          die_codec(&dcodec, "Failed to set reference frame");
      }
    }

clang-format's avatar
clang-format committed
407 408
    encode_frame(&ecodec, &cfg, &raw, frame_in, writer, test_decode, &dcodec,
                 &frame_out, &mismatch_seen);
409
    frame_in++;
clang-format's avatar
clang-format committed
410
    if (mismatch_seen) break;
411 412 413 414 415
  }

  // Flush encoder.
  if (!mismatch_seen)
    while (encode_frame(&ecodec, &cfg, NULL, frame_in, writer, test_decode,
clang-format's avatar
clang-format committed
416 417
                        &dcodec, &frame_out, &mismatch_seen)) {
    }
418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441

  printf("\n");
  fclose(infile);
  printf("Processed %d frames.\n", frame_out);

  if (test_decode) {
    if (!mismatch_seen)
      printf("Encoder/decoder results are matching.\n");
    else
      printf("Encoder/decoder results are NOT matching.\n");
  }

  if (test_decode)
    if (aom_codec_destroy(&dcodec))
      die_codec(&dcodec, "Failed to destroy decoder");

  aom_img_free(&raw);
  if (aom_codec_destroy(&ecodec))
    die_codec(&ecodec, "Failed to destroy encoder.");

  aom_video_writer_close(writer);

  return EXIT_SUCCESS;
}