Merge pull request #850 from trav90/add-av1-support

Add initial support for AV1 video.

1 files changed, 499 insertions, 0 deletions

diff --git a/third_party/aom/examples/lightfield_encoder.c b/third_party/aom/examples/lightfield_encoder.c
new file mode 100644
index 000000000..e55cd5ce3
--- /dev/null
+++ b/third_party/aom/examples/lightfield_encoder.c
@@ -0,0 +1,499 @@
+/*
+ * 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 Encoder
+// ==================
+//
+// This is an example of a simple lightfield encoder.  It builds upon the
+// twopass_encoder.c example. It takes an input file in YV12 format,
+// treating it as a planar lightfield instead of a video. The img_width
+// and img_height arguments are the dimensions of the lightfield images,
+// while the lf_width and lf_height arguments are the number of
+// lightfield images in each dimension. The lf_blocksize determines the
+// number of reference images used for MCP. For example, 5 means that there
+// is a reference image for every 5x5 lightfield image block. All images
+// within a block will use the center image in that block as the reference
+// image for MCP.
+// Run "make test" to download lightfield test data: vase10x10.yuv.
+// Run lightfield encoder to encode whole lightfield:
+// examples/lightfield_encoder 1024 1024 vase10x10.yuv vase10x10.ivf 10 10 5
+
+// Note: In bitstream.c and encoder.c, define EXT_TILE_DEBUG as 1 will print
+// out the uncompressed header and the frame contexts, which can be used to
+// test the bit exactness of the headers and the frame contexts for large scale
+// tile coded frames.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "aom/aom_encoder.h"
+#include "aom/aomcx.h"
+#include "aom_scale/yv12config.h"
+#include "av1/common/enums.h"
+#include "common/tools_common.h"
+#include "common/video_writer.h"
+
+static const char *exec_name;
+
+void usage_exit(void) {
+  fprintf(stderr,
+          "Usage: %s <img_width> <img_height> <infile> <outfile> "
+          "<lf_width> <lf_height> <lf_blocksize>\n",
+          exec_name);
+  exit(EXIT_FAILURE);
+}
+
+static int aom_img_size_bytes(aom_image_t *img) {
+  int image_size_bytes = 0;
+  int plane;
+  for (plane = 0; plane < 3; ++plane) {
+    const int w = aom_img_plane_width(img, plane) *
+                  ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+    const int h = aom_img_plane_height(img, plane);
+    image_size_bytes += w * h;
+  }
+  return image_size_bytes;
+}
+
+static int get_frame_stats(aom_codec_ctx_t *ctx, const aom_image_t *img,
+                           aom_codec_pts_t pts, unsigned int duration,
+                           aom_enc_frame_flags_t flags,
+                           aom_fixed_buf_t *stats) {
+  int got_pkts = 0;
+  aom_codec_iter_t iter = NULL;
+  const aom_codec_cx_pkt_t *pkt = NULL;
+  const aom_codec_err_t res = aom_codec_encode(ctx, img, pts, duration, flags);
+  if (res != AOM_CODEC_OK) die_codec(ctx, "Failed to get frame stats.");
+
+  while ((pkt = aom_codec_get_cx_data(ctx, &iter)) != NULL) {
+    got_pkts = 1;
+
+    if (pkt->kind == AOM_CODEC_STATS_PKT) {
+      const uint8_t *const pkt_buf = pkt->data.twopass_stats.buf;
+      const size_t pkt_size = pkt->data.twopass_stats.sz;
+      stats->buf = realloc(stats->buf, stats->sz + pkt_size);
+      memcpy((uint8_t *)stats->buf + stats->sz, pkt_buf, pkt_size);
+      stats->sz += pkt_size;
+    }
+  }
+
+  return got_pkts;
+}
+
+static int encode_frame(aom_codec_ctx_t *ctx, const aom_image_t *img,
+                        aom_codec_pts_t pts, unsigned int duration,
+                        aom_enc_frame_flags_t flags, AvxVideoWriter *writer) {
+  int got_pkts = 0;
+  aom_codec_iter_t iter = NULL;
+  const aom_codec_cx_pkt_t *pkt = NULL;
+  const aom_codec_err_t res = aom_codec_encode(ctx, img, pts, duration, flags);
+  if (res != AOM_CODEC_OK) die_codec(ctx, "Failed to encode frame.");
+
+  while ((pkt = aom_codec_get_cx_data(ctx, &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 (!aom_video_writer_write_frame(writer, pkt->data.frame.buf,
+                                        pkt->data.frame.sz,
+                                        pkt->data.frame.pts))
+        die_codec(ctx, "Failed to write compressed frame.");
+      printf(keyframe ? "K" : ".");
+      fflush(stdout);
+    }
+  }
+
+  return got_pkts;
+}
+
+static void get_raw_image(aom_image_t **frame_to_encode, aom_image_t *raw,
+                          aom_image_t *raw_shift) {
+  if (!CONFIG_LOWBITDEPTH) {
+    // Need to allocate larger buffer to use hbd internal.
+    int input_shift = 0;
+    aom_img_upshift(raw_shift, raw, input_shift);
+    *frame_to_encode = raw_shift;
+  } else {
+    *frame_to_encode = raw;
+  }
+}
+
+static aom_fixed_buf_t pass0(aom_image_t *raw, FILE *infile,
+                             const AvxInterface *encoder,
+                             const aom_codec_enc_cfg_t *cfg, int lf_width,
+                             int lf_height, int lf_blocksize, int flags,
+                             aom_image_t *raw_shift) {
+  aom_codec_ctx_t codec;
+  int frame_count = 0;
+  int image_size_bytes = aom_img_size_bytes(raw);
+  int u_blocks, v_blocks;
+  int bu, bv;
+  aom_fixed_buf_t stats = { NULL, 0 };
+  aom_image_t *frame_to_encode;
+
+  if (aom_codec_enc_init(&codec, encoder->codec_interface(), cfg, flags))
+    die_codec(&codec, "Failed to initialize encoder");
+  if (aom_codec_control(&codec, AOME_SET_ENABLEAUTOALTREF, 0))
+    die_codec(&codec, "Failed to turn off auto altref");
+  if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 0))
+    die_codec(&codec, "Failed to set frame parallel decoding");
+
+  // How many reference images we need to encode.
+  u_blocks = (lf_width + lf_blocksize - 1) / lf_blocksize;
+  v_blocks = (lf_height + lf_blocksize - 1) / lf_blocksize;
+
+  printf("\n First pass: ");
+
+  for (bv = 0; bv < v_blocks; ++bv) {
+    for (bu = 0; bu < u_blocks; ++bu) {
+      const int block_u_min = bu * lf_blocksize;
+      const int block_v_min = bv * lf_blocksize;
+      int block_u_end = (bu + 1) * lf_blocksize;
+      int block_v_end = (bv + 1) * lf_blocksize;
+      int u_block_size, v_block_size;
+      int block_ref_u, block_ref_v;
+
+      block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+      block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+      u_block_size = block_u_end - block_u_min;
+      v_block_size = block_v_end - block_v_min;
+      block_ref_u = block_u_min + u_block_size / 2;
+      block_ref_v = block_v_min + v_block_size / 2;
+
+      printf("A%d, ", (block_ref_u + block_ref_v * lf_width));
+      fseek(infile, (block_ref_u + block_ref_v * lf_width) * image_size_bytes,
+            SEEK_SET);
+      aom_img_read(raw, infile);
+      get_raw_image(&frame_to_encode, raw, raw_shift);
+
+      // Reference frames can be encoded encoded without tiles.
+      ++frame_count;
+      get_frame_stats(&codec, frame_to_encode, frame_count, 1,
+                      AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+                          AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+                          AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+                          AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+                          AOM_EFLAG_NO_UPD_ARF,
+                      &stats);
+    }
+  }
+
+  if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 1))
+    die_codec(&codec, "Failed to set frame parallel decoding");
+
+  for (bv = 0; bv < v_blocks; ++bv) {
+    for (bu = 0; bu < u_blocks; ++bu) {
+      const int block_u_min = bu * lf_blocksize;
+      const int block_v_min = bv * lf_blocksize;
+      int block_u_end = (bu + 1) * lf_blocksize;
+      int block_v_end = (bv + 1) * lf_blocksize;
+      int u, v;
+      block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+      block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+      for (v = block_v_min; v < block_v_end; ++v) {
+        for (u = block_u_min; u < block_u_end; ++u) {
+          printf("C%d, ", (u + v * lf_width));
+          fseek(infile, (u + v * lf_width) * image_size_bytes, SEEK_SET);
+          aom_img_read(raw, infile);
+          get_raw_image(&frame_to_encode, raw, raw_shift);
+
+          ++frame_count;
+          get_frame_stats(&codec, frame_to_encode, frame_count, 1,
+                          AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+                              AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+                              AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+                              AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+                              AOM_EFLAG_NO_UPD_ARF | AOM_EFLAG_NO_UPD_ENTROPY,
+                          &stats);
+        }
+      }
+    }
+  }
+  // Flush encoder.
+  // No ARF, this should not be needed.
+  while (get_frame_stats(&codec, NULL, frame_count, 1, 0, &stats)) {
+  }
+
+  if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
+
+  printf("\nFirst pass complete. Processed %d frames.\n", frame_count);
+
+  return stats;
+}
+
+static void pass1(aom_image_t *raw, FILE *infile, const char *outfile_name,
+                  const AvxInterface *encoder, aom_codec_enc_cfg_t *cfg,
+                  int lf_width, int lf_height, int lf_blocksize, int flags,
+                  aom_image_t *raw_shift) {
+  AvxVideoInfo info = { encoder->fourcc,
+                        cfg->g_w,
+                        cfg->g_h,
+                        { cfg->g_timebase.num, cfg->g_timebase.den },
+                        0 };
+  AvxVideoWriter *writer = NULL;
+  aom_codec_ctx_t codec;
+  int frame_count = 0;
+  int image_size_bytes = aom_img_size_bytes(raw);
+  int bu, bv;
+  int u_blocks, v_blocks;
+  aom_image_t *frame_to_encode;
+  aom_image_t reference_images[MAX_EXTERNAL_REFERENCES];
+  int reference_image_num = 0;
+  int i;
+
+  writer = aom_video_writer_open(outfile_name, kContainerIVF, &info);
+  if (!writer) die("Failed to open %s for writing", outfile_name);
+
+  if (aom_codec_enc_init(&codec, encoder->codec_interface(), cfg, flags))
+    die_codec(&codec, "Failed to initialize encoder");
+  if (aom_codec_control(&codec, AOME_SET_ENABLEAUTOALTREF, 0))
+    die_codec(&codec, "Failed to turn off auto altref");
+  if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 0))
+    die_codec(&codec, "Failed to set frame parallel decoding");
+  // Note: The superblock is a sequence parameter and has to be the same for 1
+  // sequence. In lightfield application, must choose the superblock size(either
+  // 64x64 or 128x128) before the encoding starts. Otherwise, the default is
+  // AOM_SUPERBLOCK_SIZE_DYNAMIC, and the superblock size will be set to 64x64
+  // internally.
+  if (aom_codec_control(&codec, AV1E_SET_SUPERBLOCK_SIZE,
+                        AOM_SUPERBLOCK_SIZE_64X64))
+    die_codec(&codec, "Failed to set SB size");
+
+  u_blocks = (lf_width + lf_blocksize - 1) / lf_blocksize;
+  v_blocks = (lf_height + lf_blocksize - 1) / lf_blocksize;
+
+  reference_image_num = u_blocks * v_blocks;
+  aom_img_fmt_t ref_fmt = AOM_IMG_FMT_I420;
+  if (!CONFIG_LOWBITDEPTH) ref_fmt |= AOM_IMG_FMT_HIGHBITDEPTH;
+  // Allocate memory with the border so that it can be used as a reference.
+  for (i = 0; i < reference_image_num; i++) {
+    if (!aom_img_alloc_with_border(&reference_images[i], ref_fmt, cfg->g_w,
+                                   cfg->g_h, 32, 8, AOM_BORDER_IN_PIXELS)) {
+      die("Failed to allocate image.");
+    }
+  }
+
+  printf("\n Second pass: ");
+
+  // Encode reference images first.
+  printf("Encoding Reference Images\n");
+  for (bv = 0; bv < v_blocks; ++bv) {
+    for (bu = 0; bu < u_blocks; ++bu) {
+      const int block_u_min = bu * lf_blocksize;
+      const int block_v_min = bv * lf_blocksize;
+      int block_u_end = (bu + 1) * lf_blocksize;
+      int block_v_end = (bv + 1) * lf_blocksize;
+      int u_block_size, v_block_size;
+      int block_ref_u, block_ref_v;
+
+      block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+      block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+      u_block_size = block_u_end - block_u_min;
+      v_block_size = block_v_end - block_v_min;
+      block_ref_u = block_u_min + u_block_size / 2;
+      block_ref_v = block_v_min + v_block_size / 2;
+
+      printf("A%d, ", (block_ref_u + block_ref_v * lf_width));
+      fseek(infile, (block_ref_u + block_ref_v * lf_width) * image_size_bytes,
+            SEEK_SET);
+      aom_img_read(raw, infile);
+
+      get_raw_image(&frame_to_encode, raw, raw_shift);
+
+      // Reference frames may be encoded without tiles.
+      ++frame_count;
+      printf("Encoding reference image %d of %d\n", bv * u_blocks + bu,
+             u_blocks * v_blocks);
+      encode_frame(&codec, frame_to_encode, frame_count, 1,
+                   AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+                       AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+                       AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+                       AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+                       AOM_EFLAG_NO_UPD_ARF | AOM_EFLAG_NO_UPD_ENTROPY,
+                   writer);
+
+      if (aom_codec_control(&codec, AV1_COPY_NEW_FRAME_IMAGE,
+                            &reference_images[frame_count - 1]))
+        die_codec(&codec, "Failed to copy decoder reference frame");
+    }
+  }
+
+  cfg->large_scale_tile = 1;
+  // Fixed q encoding for camera frames.
+  cfg->rc_end_usage = AOM_Q;
+  if (aom_codec_enc_config_set(&codec, cfg))
+    die_codec(&codec, "Failed to configure encoder");
+
+  // The fixed q value used in encoding.
+  if (aom_codec_control(&codec, AOME_SET_CQ_LEVEL, 36))
+    die_codec(&codec, "Failed to set cq level");
+  if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 1))
+    die_codec(&codec, "Failed to set frame parallel decoding");
+  if (aom_codec_control(&codec, AV1E_SET_SINGLE_TILE_DECODING, 1))
+    die_codec(&codec, "Failed to turn on single tile decoding");
+  // Set tile_columns and tile_rows to MAX values, which guarantees the tile
+  // size of 64 x 64 pixels(i.e. 1 SB) for <= 4k resolution.
+  if (aom_codec_control(&codec, AV1E_SET_TILE_COLUMNS, 6))
+    die_codec(&codec, "Failed to set tile width");
+  if (aom_codec_control(&codec, AV1E_SET_TILE_ROWS, 6))
+    die_codec(&codec, "Failed to set tile height");
+
+  for (bv = 0; bv < v_blocks; ++bv) {
+    for (bu = 0; bu < u_blocks; ++bu) {
+      const int block_u_min = bu * lf_blocksize;
+      const int block_v_min = bv * lf_blocksize;
+      int block_u_end = (bu + 1) * lf_blocksize;
+      int block_v_end = (bv + 1) * lf_blocksize;
+      int u, v;
+      block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+      block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+      for (v = block_v_min; v < block_v_end; ++v) {
+        for (u = block_u_min; u < block_u_end; ++u) {
+          av1_ref_frame_t ref;
+          ref.idx = 0;
+          ref.use_external_ref = 1;
+          ref.img = reference_images[bv * u_blocks + bu];
+          if (aom_codec_control(&codec, AV1_SET_REFERENCE, &ref))
+            die_codec(&codec, "Failed to set reference frame");
+
+          printf("C%d, ", (u + v * lf_width));
+          fseek(infile, (u + v * lf_width) * image_size_bytes, SEEK_SET);
+          aom_img_read(raw, infile);
+          get_raw_image(&frame_to_encode, raw, raw_shift);
+
+          ++frame_count;
+          printf("Encoding image %d of %d\n",
+                 frame_count - (u_blocks * v_blocks), lf_width * lf_height);
+          encode_frame(&codec, frame_to_encode, frame_count, 1,
+                       AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+                           AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+                           AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+                           AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+                           AOM_EFLAG_NO_UPD_ARF | AOM_EFLAG_NO_UPD_ENTROPY,
+                       writer);
+        }
+      }
+    }
+  }
+
+  // Flush encoder.
+  // No ARF, this should not be needed.
+  while (encode_frame(&codec, NULL, -1, 1, 0, writer)) {
+  }
+
+  for (i = 0; i < reference_image_num; i++) aom_img_free(&reference_images[i]);
+
+  if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
+  aom_video_writer_close(writer);
+
+  printf("\nSecond pass complete. Processed %d frames.\n", frame_count);
+}
+
+int main(int argc, char **argv) {
+  FILE *infile = NULL;
+  int w, h;
+  // The number of lightfield images in the u and v dimensions.
+  int lf_width, lf_height;
+  // Defines how many images refer to the same reference image for MCP.
+  // lf_blocksize X lf_blocksize images will all use the reference image
+  // in the middle of the block of images.
+  int lf_blocksize;
+  aom_codec_ctx_t codec;
+  aom_codec_enc_cfg_t cfg;
+  aom_image_t raw;
+  aom_image_t raw_shift;
+  aom_codec_err_t res;
+  aom_fixed_buf_t stats;
+  int flags = 0;
+
+  const AvxInterface *encoder = NULL;
+  const int fps = 30;
+  const int bitrate = 200;  // kbit/s
+  const char *const width_arg = argv[1];
+  const char *const height_arg = argv[2];
+  const char *const infile_arg = argv[3];
+  const char *const outfile_arg = argv[4];
+  const char *const lf_width_arg = argv[5];
+  const char *const lf_height_arg = argv[6];
+  const char *lf_blocksize_arg = argv[7];
+  exec_name = argv[0];
+
+  if (argc < 8) die("Invalid number of arguments");
+
+  encoder = get_aom_encoder_by_name("av1");
+  if (!encoder) die("Unsupported codec.");
+
+  w = (int)strtol(width_arg, NULL, 0);
+  h = (int)strtol(height_arg, NULL, 0);
+  lf_width = (int)strtol(lf_width_arg, NULL, 0);
+  lf_height = (int)strtol(lf_height_arg, NULL, 0);
+  lf_blocksize = (int)strtol(lf_blocksize_arg, NULL, 0);
+  lf_blocksize = lf_blocksize < lf_width ? lf_blocksize : lf_width;
+  lf_blocksize = lf_blocksize < lf_height ? lf_blocksize : lf_height;
+
+  if (w <= 0 || h <= 0 || (w % 2) != 0 || (h % 2) != 0)
+    die("Invalid frame size: %dx%d", w, h);
+  if (lf_width <= 0 || lf_height <= 0)
+    die("Invalid lf_width and/or lf_height: %dx%d", lf_width, lf_height);
+  if (lf_blocksize <= 0) die("Invalid lf_blocksize: %d", lf_blocksize);
+
+  if (!aom_img_alloc(&raw, AOM_IMG_FMT_I420, w, h, 32)) {
+    die("Failed to allocate image.");
+  }
+  if (!CONFIG_LOWBITDEPTH) {
+    // Need to allocate larger buffer to use hbd internal.
+    aom_img_alloc(&raw_shift, AOM_IMG_FMT_I420 | AOM_IMG_FMT_HIGHBITDEPTH, w, h,
+                  32);
+  }
+
+  printf("Using %s\n", aom_codec_iface_name(encoder->codec_interface()));
+
+  // Configuration
+  res = aom_codec_enc_config_default(encoder->codec_interface(), &cfg, 0);
+  if (res) die_codec(&codec, "Failed to get default codec config.");
+
+  cfg.g_w = w;
+  cfg.g_h = h;
+  cfg.g_timebase.num = 1;
+  cfg.g_timebase.den = fps;
+  cfg.rc_target_bitrate = bitrate;
+  cfg.g_error_resilient = 0;  // This is required.
+  cfg.g_lag_in_frames = 0;    // need to set this since default is 19.
+  cfg.kf_mode = AOM_KF_DISABLED;
+  cfg.large_scale_tile = 0;  // Only set it to 1 for camera frame encoding.
+  cfg.g_bit_depth = AOM_BITS_8;
+  flags |= (cfg.g_bit_depth > AOM_BITS_8 || !CONFIG_LOWBITDEPTH)
+               ? AOM_CODEC_USE_HIGHBITDEPTH
+               : 0;
+
+  if (!(infile = fopen(infile_arg, "rb")))
+    die("Failed to open %s for reading", infile_arg);
+
+  // Pass 0
+  cfg.g_pass = AOM_RC_FIRST_PASS;
+  stats = pass0(&raw, infile, encoder, &cfg, lf_width, lf_height, lf_blocksize,
+                flags, &raw_shift);
+
+  // Pass 1
+  rewind(infile);
+  cfg.g_pass = AOM_RC_LAST_PASS;
+  cfg.rc_twopass_stats_in = stats;
+  pass1(&raw, infile, outfile_arg, encoder, &cfg, lf_width, lf_height,
+        lf_blocksize, flags, &raw_shift);
+  free(stats.buf);
+
+  if (!CONFIG_LOWBITDEPTH) aom_img_free(&raw_shift);
+  aom_img_free(&raw);
+  fclose(infile);
+
+  return EXIT_SUCCESS;
+}