Merge branch 'master' into Sync-weave

1 files changed, 161 insertions, 0 deletions

diff --git a/third_party/aom/examples/lightfield_tile_list_decoder.c b/third_party/aom/examples/lightfield_tile_list_decoder.c
new file mode 100644
index 000000000..5556bf0e7
--- /dev/null
+++ b/third_party/aom/examples/lightfield_tile_list_decoder.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2018, 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 Tile List Decoder
+// ============================
+//
+// This is a lightfield tile list decoder example. It takes an input file that
+// contains the anchor frames that are references of the coded tiles, the camera
+// frame header, and tile list OBUs that include the tile information and the
+// compressed tile data. This input file is reconstructed from the encoded
+// lightfield ivf file, and is decodable by AV1 decoder. num_references is
+// the number of anchor frames coded at the beginning of the light field file.
+// num_tile_lists is the number of tile lists need to be decoded.
+// Run lightfield tile list decoder to decode an AV1 tile list file:
+// examples/lightfield_tile_list_decoder vase_tile_list.ivf vase_tile_list.yuv
+// 4 2
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.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> <num_tile_lists>\n",
+          exec_name);
+  exit(EXIT_FAILURE);
+}
+
+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;
+  int num_tile_lists;
+  aom_image_t reference_images[MAX_EXTERNAL_REFERENCES];
+  size_t frame_size = 0;
+  const unsigned char *frame = NULL;
+  int i, j, n;
+
+  exec_name = argv[0];
+
+  if (argc != 5) 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);
+  num_tile_lists = (int)strtol(argv[4], 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);
+    }
+  }
+
+  // Decode the lightfield.
+  aom_codec_control_(&codec, AV1_SET_TILE_MODE, 1);
+
+  // Set external references.
+  av1_ext_ref_frame_t set_ext_ref = { &reference_images[0], num_references };
+  aom_codec_control_(&codec, AV1D_SET_EXT_REF_PTR, &set_ext_ref);
+  // Must decode the camera frame header first.
+  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 the frame.");
+  // Decode tile lists one by one.
+  for (n = 0; n < num_tile_lists; n++) {
+    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 the tile list.");
+    aom_codec_iter_t iter = NULL;
+    aom_image_t *img;
+    while ((img = aom_codec_get_frame(&codec, &iter)))
+      fwrite(img->img_data, 1, img->sz, 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;
+}