Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/vpxdec.c

Index: third_party/libvpx/source/libvpx/vpxdec.c
diff --git a/third_party/libvpx/source/libvpx/vpxdec.c b/third_party/libvpx/source/libvpx/vpxdec.c
new file mode 100644
index 0000000000000000000000000000000000000000..8c938df8de6157cc068fd908fd2fca9593ad4acd
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/vpxdec.c
@@ -0,0 +1,1154 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <limits.h>
+
+#include "./vpx_config.h"
+
+#if CONFIG_LIBYUV
+#include "third_party/libyuv/include/libyuv/scale.h"
+#endif
+
+#include "./args.h"
+#include "./ivfdec.h"
+
+#include "vpx/vpx_decoder.h"
+#include "vpx_ports/mem_ops.h"
+#include "vpx_ports/vpx_timer.h"
+
+#if CONFIG_VP8_DECODER || CONFIG_VP9_DECODER
+#include "vpx/vp8dx.h"
+#endif
+
+#include "./md5_utils.h"
+
+#include "./tools_common.h"
+#if CONFIG_WEBM_IO
+#include "./webmdec.h"
+#endif
+#include "./y4menc.h"
+
+static const char *exec_name;
+
+struct VpxDecInputContext {
+  struct VpxInputContext *vpx_input_ctx;
+  struct WebmInputContext *webm_ctx;
+};
+
+static const arg_def_t looparg = ARG_DEF(
+    NULL, "loops", 1, "Number of times to decode the file");
+static const arg_def_t codecarg = ARG_DEF(
+    NULL, "codec", 1, "Codec to use");
+static const arg_def_t use_yv12 = ARG_DEF(
+    NULL, "yv12", 0, "Output raw YV12 frames");
+static const arg_def_t use_i420 = ARG_DEF(
+    NULL, "i420", 0, "Output raw I420 frames");
+static const arg_def_t flipuvarg = ARG_DEF(
+    NULL, "flipuv", 0, "Flip the chroma planes in the output");
+static const arg_def_t rawvideo = ARG_DEF(
+    NULL, "rawvideo", 0, "Output raw YUV frames");
+static const arg_def_t noblitarg = ARG_DEF(
+    NULL, "noblit", 0, "Don't process the decoded frames");
+static const arg_def_t progressarg = ARG_DEF(
+    NULL, "progress", 0, "Show progress after each frame decodes");
+static const arg_def_t limitarg = ARG_DEF(
+    NULL, "limit", 1, "Stop decoding after n frames");
+static const arg_def_t skiparg = ARG_DEF(
+    NULL, "skip", 1, "Skip the first n input frames");
+static const arg_def_t postprocarg = ARG_DEF(
+    NULL, "postproc", 0, "Postprocess decoded frames");
+static const arg_def_t summaryarg = ARG_DEF(
+    NULL, "summary", 0, "Show timing summary");
+static const arg_def_t outputfile = ARG_DEF(
+    "o", "output", 1, "Output file name pattern (see below)");
+static const arg_def_t threadsarg = ARG_DEF(
+    "t", "threads", 1, "Max threads to use");
+static const arg_def_t frameparallelarg = ARG_DEF(
+    NULL, "frame-parallel", 0, "Frame parallel decode");
+static const arg_def_t verbosearg = ARG_DEF(
+    "v", "verbose", 0, "Show version string");
+static const arg_def_t error_concealment = ARG_DEF(
+    NULL, "error-concealment", 0, "Enable decoder error-concealment");
+static const arg_def_t scalearg = ARG_DEF(
+    "S", "scale", 0, "Scale output frames uniformly");
+static const arg_def_t continuearg = ARG_DEF(
+    "k", "keep-going", 0, "(debug) Continue decoding after error");
+static const arg_def_t fb_arg = ARG_DEF(
+    NULL, "frame-buffers", 1, "Number of frame buffers to use");
+static const arg_def_t md5arg = ARG_DEF(
+    NULL, "md5", 0, "Compute the MD5 sum of the decoded frame");
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+static const arg_def_t outbitdeptharg = ARG_DEF(
+    NULL, "output-bit-depth", 1, "Output bit-depth for decoded frames");
+#endif
+
+static const arg_def_t *all_args[] = {
+  &codecarg, &use_yv12, &use_i420, &flipuvarg, &rawvideo, &noblitarg,
+  &progressarg, &limitarg, &skiparg, &postprocarg, &summaryarg, &outputfile,
+  &threadsarg, &frameparallelarg, &verbosearg, &scalearg, &fb_arg,
+  &md5arg, &error_concealment, &continuearg,
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+  &outbitdeptharg,
+#endif
+  NULL
+};
+
+#if CONFIG_VP8_DECODER
+static const arg_def_t addnoise_level = ARG_DEF(NULL, "noise-level", 1,
+                                                "Enable VP8 postproc add noise");
+static const arg_def_t deblock = ARG_DEF(NULL, "deblock", 0,
+                                         "Enable VP8 deblocking");
+static const arg_def_t demacroblock_level = ARG_DEF(NULL, "demacroblock-level", 1,
+                                                    "Enable VP8 demacroblocking, w/ level");
+static const arg_def_t pp_debug_info = ARG_DEF(NULL, "pp-debug-info", 1,
+                                               "Enable VP8 visible debug info");
+static const arg_def_t pp_disp_ref_frame = ARG_DEF(NULL, "pp-dbg-ref-frame", 1,
+                                                   "Display only selected reference frame per macro block");
+static const arg_def_t pp_disp_mb_modes = ARG_DEF(NULL, "pp-dbg-mb-modes", 1,
+                                                  "Display only selected macro block modes");
+static const arg_def_t pp_disp_b_modes = ARG_DEF(NULL, "pp-dbg-b-modes", 1,
+                                                 "Display only selected block modes");
+static const arg_def_t pp_disp_mvs = ARG_DEF(NULL, "pp-dbg-mvs", 1,
+                                             "Draw only selected motion vectors");
+static const arg_def_t mfqe = ARG_DEF(NULL, "mfqe", 0,
+                                      "Enable multiframe quality enhancement");
+
+static const arg_def_t *vp8_pp_args[] = {
+  &addnoise_level, &deblock, &demacroblock_level, &pp_debug_info,
+  &pp_disp_ref_frame, &pp_disp_mb_modes, &pp_disp_b_modes, &pp_disp_mvs, &mfqe,
+  NULL
+};
+#endif
+
+#if CONFIG_LIBYUV
+static INLINE int libyuv_scale(vpx_image_t *src, vpx_image_t *dst,
+                                  FilterModeEnum mode) {
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+  if (src->fmt == VPX_IMG_FMT_I42016) {
+    assert(dst->fmt == VPX_IMG_FMT_I42016);
+    return I420Scale_16((uint16_t*)src->planes[VPX_PLANE_Y],
+                        src->stride[VPX_PLANE_Y]/2,
+                        (uint16_t*)src->planes[VPX_PLANE_U],
+                        src->stride[VPX_PLANE_U]/2,
+                        (uint16_t*)src->planes[VPX_PLANE_V],
+                        src->stride[VPX_PLANE_V]/2,
+                        src->d_w, src->d_h,
+                        (uint16_t*)dst->planes[VPX_PLANE_Y],
+                        dst->stride[VPX_PLANE_Y]/2,
+                        (uint16_t*)dst->planes[VPX_PLANE_U],
+                        dst->stride[VPX_PLANE_U]/2,
+                        (uint16_t*)dst->planes[VPX_PLANE_V],
+                        dst->stride[VPX_PLANE_V]/2,
+                        dst->d_w, dst->d_h,
+                        mode);
+  }
+#endif
+  assert(src->fmt == VPX_IMG_FMT_I420);
+  assert(dst->fmt == VPX_IMG_FMT_I420);
+  return I420Scale(src->planes[VPX_PLANE_Y], src->stride[VPX_PLANE_Y],
+                   src->planes[VPX_PLANE_U], src->stride[VPX_PLANE_U],
+                   src->planes[VPX_PLANE_V], src->stride[VPX_PLANE_V],
+                   src->d_w, src->d_h,
+                   dst->planes[VPX_PLANE_Y], dst->stride[VPX_PLANE_Y],
+                   dst->planes[VPX_PLANE_U], dst->stride[VPX_PLANE_U],
+                   dst->planes[VPX_PLANE_V], dst->stride[VPX_PLANE_V],
+                   dst->d_w, dst->d_h,
+                   mode);
+}
+#endif
+
+void usage_exit() {
+  int i;
+
+  fprintf(stderr, "Usage: %s <options> filename\n\n"
+          "Options:\n", exec_name);
+  arg_show_usage(stderr, all_args);
+#if CONFIG_VP8_DECODER
+  fprintf(stderr, "\nVP8 Postprocessing Options:\n");
+  arg_show_usage(stderr, vp8_pp_args);
+#endif
+  fprintf(stderr,
+          "\nOutput File Patterns:\n\n"
+          "  The -o argument specifies the name of the file(s) to "
+          "write to. If the\n  argument does not include any escape "
+          "characters, the output will be\n  written to a single file. "
+          "Otherwise, the filename will be calculated by\n  expanding "
+          "the following escape characters:\n");
+  fprintf(stderr,
+          "\n\t%%w   - Frame width"
+          "\n\t%%h   - Frame height"
+          "\n\t%%<n> - Frame number, zero padded to <n> places (1..9)"
+          "\n\n  Pattern arguments are only supported in conjunction "
+          "with the --yv12 and\n  --i420 options. If the -o option is "
+          "not specified, the output will be\n  directed to stdout.\n"
+         );
+  fprintf(stderr, "\nIncluded decoders:\n\n");
+
+  for (i = 0; i < get_vpx_decoder_count(); ++i) {
+    const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
+    fprintf(stderr, "    %-6s - %s\n",
+            decoder->name, vpx_codec_iface_name(decoder->codec_interface()));
+  }
+
+  exit(EXIT_FAILURE);
+}
+
+static int raw_read_frame(FILE *infile, uint8_t **buffer,
+                          size_t *bytes_read, size_t *buffer_size) {
+  char raw_hdr[RAW_FRAME_HDR_SZ];
+  size_t frame_size = 0;
+
+  if (fread(raw_hdr, RAW_FRAME_HDR_SZ, 1, infile) != 1) {
+    if (!feof(infile))
+      warn("Failed to read RAW frame size\n");
+  } else {
+    const size_t kCorruptFrameThreshold = 256 * 1024 * 1024;
+    const size_t kFrameTooSmallThreshold = 256 * 1024;
+    frame_size = mem_get_le32(raw_hdr);
+
+    if (frame_size > kCorruptFrameThreshold) {
+      warn("Read invalid frame size (%u)\n", (unsigned int)frame_size);
+      frame_size = 0;
+    }
+
+    if (frame_size < kFrameTooSmallThreshold) {
+      warn("Warning: Read invalid frame size (%u) - not a raw file?\n",
+           (unsigned int)frame_size);
+    }
+
+    if (frame_size > *buffer_size) {
+      uint8_t *new_buf = realloc(*buffer, 2 * frame_size);
+      if (new_buf) {
+        *buffer = new_buf;
+        *buffer_size = 2 * frame_size;
+      } else {
+        warn("Failed to allocate compressed data buffer\n");
+        frame_size = 0;
+      }
+    }
+  }
+
+  if (!feof(infile)) {
+    if (fread(*buffer, 1, frame_size, infile) != frame_size) {
+      warn("Failed to read full frame\n");
+      return 1;
+    }
+    *bytes_read = frame_size;
+  }
+
+  return 0;
+}
+
+static int read_frame(struct VpxDecInputContext *input, uint8_t **buf,
+                      size_t *bytes_in_buffer, size_t *buffer_size) {
+  switch (input->vpx_input_ctx->file_type) {
+#if CONFIG_WEBM_IO
+    case FILE_TYPE_WEBM:
+      return webm_read_frame(input->webm_ctx,
+                             buf, bytes_in_buffer, buffer_size);
+#endif
+    case FILE_TYPE_RAW:
+      return raw_read_frame(input->vpx_input_ctx->file,
+                            buf, bytes_in_buffer, buffer_size);
+    case FILE_TYPE_IVF:
+      return ivf_read_frame(input->vpx_input_ctx->file,
+                            buf, bytes_in_buffer, buffer_size);
+    default:
+      return 1;
+  }
+}
+
+static void update_image_md5(const vpx_image_t *img, const int planes[3],
+                             MD5Context *md5) {
+  int i, y;
+
+  for (i = 0; i < 3; ++i) {
+    const int plane = planes[i];
+    const unsigned char *buf = img->planes[plane];
+    const int stride = img->stride[plane];
+    const int w = vpx_img_plane_width(img, plane) *
+                ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+    const int h = vpx_img_plane_height(img, plane);
+
+    for (y = 0; y < h; ++y) {
+      MD5Update(md5, buf, w);
+      buf += stride;
+    }
+  }
+}
+
+static void write_image_file(const vpx_image_t *img, const int planes[3],
+                             FILE *file) {
+  int i, y;
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+  const int bytes_per_sample = ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+#else
+  const int bytes_per_sample = 1;
+#endif
+
+  for (i = 0; i < 3; ++i) {
+    const int plane = planes[i];
+    const unsigned char *buf = img->planes[plane];
+    const int stride = img->stride[plane];
+    const int w = vpx_img_plane_width(img, plane);
+    const int h = vpx_img_plane_height(img, plane);
+
+    for (y = 0; y < h; ++y) {
+      fwrite(buf, bytes_per_sample, w, file);
+      buf += stride;
+    }
+  }
+}
+
+int file_is_raw(struct VpxInputContext *input) {
+  uint8_t buf[32];
+  int is_raw = 0;
+  vpx_codec_stream_info_t si;
+
+  si.sz = sizeof(si);
+
+  if (fread(buf, 1, 32, input->file) == 32) {
+    int i;
+
+    if (mem_get_le32(buf) < 256 * 1024 * 1024) {
+      for (i = 0; i < get_vpx_decoder_count(); ++i) {
+        const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
+        if (!vpx_codec_peek_stream_info(decoder->codec_interface(),
+                                        buf + 4, 32 - 4, &si)) {
+          is_raw = 1;
+          input->fourcc = decoder->fourcc;
+          input->width = si.w;
+          input->height = si.h;
+          input->framerate.numerator = 30;
+          input->framerate.denominator = 1;
+          break;
+        }
+      }
+    }
+  }
+
+  rewind(input->file);
+  return is_raw;
+}
+
+void show_progress(int frame_in, int frame_out, uint64_t dx_time) {
+  fprintf(stderr,
+          "%d decoded frames/%d showed frames in %"PRId64" us (%.2f fps)\r",
+          frame_in, frame_out, dx_time,
+          (double)frame_out * 1000000.0 / (double)dx_time);
+}
+
+struct ExternalFrameBuffer {
+  uint8_t* data;
+  size_t size;
+  int in_use;
+};
+
+struct ExternalFrameBufferList {
+  int num_external_frame_buffers;
+  struct ExternalFrameBuffer *ext_fb;
+};
+
+// Callback used by libvpx to request an external frame buffer. |cb_priv|
+// Application private data passed into the set function. |min_size| is the
+// minimum size in bytes needed to decode the next frame. |fb| pointer to the
+// frame buffer.
+int get_vp9_frame_buffer(void *cb_priv, size_t min_size,
+                         vpx_codec_frame_buffer_t *fb) {
+  int i;
+  struct ExternalFrameBufferList *const ext_fb_list =
+      (struct ExternalFrameBufferList *)cb_priv;
+  if (ext_fb_list == NULL)
+    return -1;
+
+  // Find a free frame buffer.
+  for (i = 0; i < ext_fb_list->num_external_frame_buffers; ++i) {
+    if (!ext_fb_list->ext_fb[i].in_use)
+      break;
+  }
+
+  if (i == ext_fb_list->num_external_frame_buffers)
+    return -1;
+
+  if (ext_fb_list->ext_fb[i].size < min_size) {
+    free(ext_fb_list->ext_fb[i].data);
+    ext_fb_list->ext_fb[i].data = (uint8_t *)calloc(min_size, sizeof(uint8_t));
+    if (!ext_fb_list->ext_fb[i].data)
+      return -1;
+
+    ext_fb_list->ext_fb[i].size = min_size;
+  }
+
+  fb->data = ext_fb_list->ext_fb[i].data;
+  fb->size = ext_fb_list->ext_fb[i].size;
+  ext_fb_list->ext_fb[i].in_use = 1;
+
+  // Set the frame buffer's private data to point at the external frame buffer.
+  fb->priv = &ext_fb_list->ext_fb[i];
+  return 0;
+}
+
+// Callback used by libvpx when there are no references to the frame buffer.
+// |cb_priv| user private data passed into the set function. |fb| pointer
+// to the frame buffer.
+int release_vp9_frame_buffer(void *cb_priv,
+                             vpx_codec_frame_buffer_t *fb) {
+  struct ExternalFrameBuffer *const ext_fb =
+      (struct ExternalFrameBuffer *)fb->priv;
+  (void)cb_priv;
+  ext_fb->in_use = 0;
+  return 0;
+}
+
+void generate_filename(const char *pattern, char *out, size_t q_len,
+                       unsigned int d_w, unsigned int d_h,
+                       unsigned int frame_in) {
+  const char *p = pattern;
+  char *q = out;
+
+  do {
+    char *next_pat = strchr(p, '%');
+
+    if (p == next_pat) {
+      size_t pat_len;
+
+      /* parse the pattern */
+      q[q_len - 1] = '\0';
+      switch (p[1]) {
+        case 'w':
+          snprintf(q, q_len - 1, "%d", d_w);
+          break;
+        case 'h':
+          snprintf(q, q_len - 1, "%d", d_h);
+          break;
+        case '1':
+          snprintf(q, q_len - 1, "%d", frame_in);
+          break;
+        case '2':
+          snprintf(q, q_len - 1, "%02d", frame_in);
+          break;
+        case '3':
+          snprintf(q, q_len - 1, "%03d", frame_in);
+          break;
+        case '4':
+          snprintf(q, q_len - 1, "%04d", frame_in);
+          break;
+        case '5':
+          snprintf(q, q_len - 1, "%05d", frame_in);
+          break;
+        case '6':
+          snprintf(q, q_len - 1, "%06d", frame_in);
+          break;
+        case '7':
+          snprintf(q, q_len - 1, "%07d", frame_in);
+          break;
+        case '8':
+          snprintf(q, q_len - 1, "%08d", frame_in);
+          break;
+        case '9':
+          snprintf(q, q_len - 1, "%09d", frame_in);
+          break;
+        default:
+          die("Unrecognized pattern %%%c\n", p[1]);
+          break;
+      }
+
+      pat_len = strlen(q);
+      if (pat_len >= q_len - 1)
+        die("Output filename too long.\n");
+      q += pat_len;
+      p += 2;
+      q_len -= pat_len;
+    } else {
+      size_t copy_len;
+
+      /* copy the next segment */
+      if (!next_pat)
+        copy_len = strlen(p);
+      else
+        copy_len = next_pat - p;
+
+      if (copy_len >= q_len - 1)
+        die("Output filename too long.\n");
+
+      memcpy(q, p, copy_len);
+      q[copy_len] = '\0';
+      q += copy_len;
+      p += copy_len;
+      q_len -= copy_len;
+    }
+  } while (*p);
+}
+
+static int is_single_file(const char *outfile_pattern) {
+  const char *p = outfile_pattern;
+
+  do {
+    p = strchr(p, '%');
+    if (p && p[1] >= '1' && p[1] <= '9')
+      return 0;  // pattern contains sequence number, so it's not unique
+    if (p)
+      p++;
+  } while (p);
+
+  return 1;
+}
+
+static void print_md5(unsigned char digest[16], const char *filename) {
+  int i;
+
+  for (i = 0; i < 16; ++i)
+    printf("%02x", digest[i]);
+  printf("  %s\n", filename);
+}
+
+static FILE *open_outfile(const char *name) {
+  if (strcmp("-", name) == 0) {
+    set_binary_mode(stdout);
+    return stdout;
+  } else {
+    FILE *file = fopen(name, "wb");
+    if (!file)
+      fatal("Failed to open output file '%s'", name);
+    return file;
+  }
+}
+
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+static int img_shifted_realloc_required(const vpx_image_t *img,
+                                        const vpx_image_t *shifted,
+                                        vpx_img_fmt_t required_fmt) {
+  return img->d_w != shifted->d_w ||
+         img->d_h != shifted->d_h ||
+         required_fmt != shifted->fmt;
+}
+#endif
+
+int main_loop(int argc, const char **argv_) {
+  vpx_codec_ctx_t       decoder;
+  char                  *fn = NULL;
+  int                    i;
+  uint8_t               *buf = NULL;
+  size_t                 bytes_in_buffer = 0, buffer_size = 0;
+  FILE                  *infile;
+  int                    frame_in = 0, frame_out = 0, flipuv = 0, noblit = 0;
+  int                    do_md5 = 0, progress = 0, frame_parallel = 0;
+  int                    stop_after = 0, postproc = 0, summary = 0, quiet = 1;
+  int                    arg_skip = 0;
+  int                    ec_enabled = 0;
+  int                    keep_going = 0;
+  const VpxInterface *interface = NULL;
+  const VpxInterface *fourcc_interface = NULL;
+  uint64_t dx_time = 0;
+  struct arg               arg;
+  char                   **argv, **argi, **argj;
+
+  int                     single_file;
+  int                     use_y4m = 1;
+  int                     opt_yv12 = 0;
+  int                     opt_i420 = 0;
+  vpx_codec_dec_cfg_t     cfg = {0, 0, 0};
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+  int                     output_bit_depth = 0;
+#endif
+#if CONFIG_VP8_DECODER
+  vp8_postproc_cfg_t      vp8_pp_cfg = {0};
+  int                     vp8_dbg_color_ref_frame = 0;
+  int                     vp8_dbg_color_mb_modes = 0;
+  int                     vp8_dbg_color_b_modes = 0;
+  int                     vp8_dbg_display_mv = 0;
+#endif
+  int                     frames_corrupted = 0;
+  int                     dec_flags = 0;
+  int                     do_scale = 0;
+  vpx_image_t             *scaled_img = NULL;
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+  vpx_image_t             *img_shifted = NULL;
+#endif
+  int                     frame_avail, got_data, flush_decoder = 0;
+  int                     num_external_frame_buffers = 0;
+  struct ExternalFrameBufferList ext_fb_list = {0, NULL};
+
+  const char *outfile_pattern = NULL;
+  char outfile_name[PATH_MAX] = {0};
+  FILE *outfile = NULL;
+
+  MD5Context md5_ctx;
+  unsigned char md5_digest[16];
+
+  struct VpxDecInputContext input = {NULL, NULL};
+  struct VpxInputContext vpx_input_ctx;
+#if CONFIG_WEBM_IO
+  struct WebmInputContext webm_ctx;
+  memset(&(webm_ctx), 0, sizeof(webm_ctx));
+  input.webm_ctx = &webm_ctx;
+#endif
+  input.vpx_input_ctx = &vpx_input_ctx;
+
+  /* Parse command line */
+  exec_name = argv_[0];
+  argv = argv_dup(argc - 1, argv_ + 1);
+
+  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
+    memset(&arg, 0, sizeof(arg));
+    arg.argv_step = 1;
+
+    if (arg_match(&arg, &codecarg, argi)) {
+      interface = get_vpx_decoder_by_name(arg.val);
+      if (!interface)
+        die("Error: Unrecognized argument (%s) to --codec\n", arg.val);
+    } else if (arg_match(&arg, &looparg, argi)) {
+      // no-op
+    } else if (arg_match(&arg, &outputfile, argi))
+      outfile_pattern = arg.val;
+    else if (arg_match(&arg, &use_yv12, argi)) {
+      use_y4m = 0;
+      flipuv = 1;
+      opt_yv12 = 1;
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+      output_bit_depth = 8;  // For yv12 8-bit depth output is assumed
+#endif
+    } else if (arg_match(&arg, &use_i420, argi)) {
+      use_y4m = 0;
+      flipuv = 0;
+      opt_i420 = 1;
+    } else if (arg_match(&arg, &rawvideo, argi)) {
+      use_y4m = 0;
+    } else if (arg_match(&arg, &flipuvarg, argi))
+      flipuv = 1;
+    else if (arg_match(&arg, &noblitarg, argi))
+      noblit = 1;
+    else if (arg_match(&arg, &progressarg, argi))
+      progress = 1;
+    else if (arg_match(&arg, &limitarg, argi))
+      stop_after = arg_parse_uint(&arg);
+    else if (arg_match(&arg, &skiparg, argi))
+      arg_skip = arg_parse_uint(&arg);
+    else if (arg_match(&arg, &postprocarg, argi))
+      postproc = 1;
+    else if (arg_match(&arg, &md5arg, argi))
+      do_md5 = 1;
+    else if (arg_match(&arg, &summaryarg, argi))
+      summary = 1;
+    else if (arg_match(&arg, &threadsarg, argi))
+      cfg.threads = arg_parse_uint(&arg);
+#if CONFIG_VP9_DECODER
+    else if (arg_match(&arg, &frameparallelarg, argi))
+      frame_parallel = 1;
+#endif
+    else if (arg_match(&arg, &verbosearg, argi))
+      quiet = 0;
+    else if (arg_match(&arg, &scalearg, argi))
+      do_scale = 1;
+    else if (arg_match(&arg, &fb_arg, argi))
+      num_external_frame_buffers = arg_parse_uint(&arg);
+    else if (arg_match(&arg, &continuearg, argi))
+      keep_going = 1;
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+    else if (arg_match(&arg, &outbitdeptharg, argi)) {
+      output_bit_depth = arg_parse_uint(&arg);
+    }
+#endif
+#if CONFIG_VP8_DECODER
+    else if (arg_match(&arg, &addnoise_level, argi)) {
+      postproc = 1;
+      vp8_pp_cfg.post_proc_flag |= VP8_ADDNOISE;
+      vp8_pp_cfg.noise_level = arg_parse_uint(&arg);
+    } else if (arg_match(&arg, &demacroblock_level, argi)) {
+      postproc = 1;
+      vp8_pp_cfg.post_proc_flag |= VP8_DEMACROBLOCK;
+      vp8_pp_cfg.deblocking_level = arg_parse_uint(&arg);
+    } else if (arg_match(&arg, &deblock, argi)) {
+      postproc = 1;
+      vp8_pp_cfg.post_proc_flag |= VP8_DEBLOCK;
+    } else if (arg_match(&arg, &mfqe, argi)) {
+      postproc = 1;
+      vp8_pp_cfg.post_proc_flag |= VP8_MFQE;
+    } else if (arg_match(&arg, &pp_debug_info, argi)) {
+      unsigned int level = arg_parse_uint(&arg);
+
+      postproc = 1;
+      vp8_pp_cfg.post_proc_flag &= ~0x7;
+
+      if (level)
+        vp8_pp_cfg.post_proc_flag |= level;
+    } else if (arg_match(&arg, &pp_disp_ref_frame, argi)) {
+      unsigned int flags = arg_parse_int(&arg);
+      if (flags) {
+        postproc = 1;
+        vp8_dbg_color_ref_frame = flags;
+      }
+    } else if (arg_match(&arg, &pp_disp_mb_modes, argi)) {
+      unsigned int flags = arg_parse_int(&arg);
+      if (flags) {
+        postproc = 1;
+        vp8_dbg_color_mb_modes = flags;
+      }
+    } else if (arg_match(&arg, &pp_disp_b_modes, argi)) {
+      unsigned int flags = arg_parse_int(&arg);
+      if (flags) {
+        postproc = 1;
+        vp8_dbg_color_b_modes = flags;
+      }
+    } else if (arg_match(&arg, &pp_disp_mvs, argi)) {
+      unsigned int flags = arg_parse_int(&arg);
+      if (flags) {
+        postproc = 1;
+        vp8_dbg_display_mv = flags;
+      }
+    } else if (arg_match(&arg, &error_concealment, argi)) {
+      ec_enabled = 1;
+    }
+#endif  // CONFIG_VP8_DECODER
+    else
+      argj++;
+  }
+
+  /* Check for unrecognized options */
+  for (argi = argv; *argi; argi++)
+    if (argi[0][0] == '-' && strlen(argi[0]) > 1)
+      die("Error: Unrecognized option %s\n", *argi);
+
+  /* Handle non-option arguments */
+  fn = argv[0];
+
+  if (!fn) {
+    free(argv);
+    usage_exit();
+  }
+  /* Open file */
+  infile = strcmp(fn, "-") ? fopen(fn, "rb") : set_binary_mode(stdin);
+
+  if (!infile) {
+    fatal("Failed to open input file '%s'", strcmp(fn, "-") ? fn : "stdin");
+  }
+#if CONFIG_OS_SUPPORT
+  /* Make sure we don't dump to the terminal, unless forced to with -o - */
+  if (!outfile_pattern && isatty(fileno(stdout)) && !do_md5 && !noblit) {
+    fprintf(stderr,
+            "Not dumping raw video to your terminal. Use '-o -' to "
+            "override.\n");
+    return EXIT_FAILURE;
+  }
+#endif
+  input.vpx_input_ctx->file = infile;
+  if (file_is_ivf(input.vpx_input_ctx))
+    input.vpx_input_ctx->file_type = FILE_TYPE_IVF;
+#if CONFIG_WEBM_IO
+  else if (file_is_webm(input.webm_ctx, input.vpx_input_ctx))
+    input.vpx_input_ctx->file_type = FILE_TYPE_WEBM;
+#endif
+  else if (file_is_raw(input.vpx_input_ctx))
+    input.vpx_input_ctx->file_type = FILE_TYPE_RAW;
+  else {
+    fprintf(stderr, "Unrecognized input file type.\n");
+#if !CONFIG_WEBM_IO
+    fprintf(stderr, "vpxdec was built without WebM container support.\n");
+#endif
+    return EXIT_FAILURE;
+  }
+
+  outfile_pattern = outfile_pattern ? outfile_pattern : "-";
+  single_file = is_single_file(outfile_pattern);
+
+  if (!noblit && single_file) {
+    generate_filename(outfile_pattern, outfile_name, PATH_MAX,
+                      vpx_input_ctx.width, vpx_input_ctx.height, 0);
+    if (do_md5)
+      MD5Init(&md5_ctx);
+    else
+      outfile = open_outfile(outfile_name);
+  }
+
+  if (use_y4m && !noblit) {
+    if (!single_file) {
+      fprintf(stderr, "YUV4MPEG2 not supported with output patterns,"
+              " try --i420 or --yv12 or --rawvideo.\n");
+      return EXIT_FAILURE;
+    }
+
+#if CONFIG_WEBM_IO
+    if (vpx_input_ctx.file_type == FILE_TYPE_WEBM) {
+      if (webm_guess_framerate(input.webm_ctx, input.vpx_input_ctx)) {
+        fprintf(stderr, "Failed to guess framerate -- error parsing "
+                "webm file?\n");
+        return EXIT_FAILURE;
+      }
+    }
+#endif
+  }
+
+  fourcc_interface = get_vpx_decoder_by_fourcc(vpx_input_ctx.fourcc);
+  if (interface && fourcc_interface && interface != fourcc_interface)
+    warn("Header indicates codec: %s\n", fourcc_interface->name);
+  else
+    interface = fourcc_interface;
+
+  if (!interface)
+    interface = get_vpx_decoder_by_index(0);
+
+  dec_flags = (postproc ? VPX_CODEC_USE_POSTPROC : 0) |
+              (ec_enabled ? VPX_CODEC_USE_ERROR_CONCEALMENT : 0) |
+              (frame_parallel ? VPX_CODEC_USE_FRAME_THREADING : 0);
+  if (vpx_codec_dec_init(&decoder, interface->codec_interface(),
+                         &cfg, dec_flags)) {
+    fprintf(stderr, "Failed to initialize decoder: %s\n",
+            vpx_codec_error(&decoder));
+    return EXIT_FAILURE;
+  }
+
+  if (!quiet)
+    fprintf(stderr, "%s\n", decoder.name);
+
+#if CONFIG_VP8_DECODER
+
+  if (vp8_pp_cfg.post_proc_flag
+      && vpx_codec_control(&decoder, VP8_SET_POSTPROC, &vp8_pp_cfg)) {
+    fprintf(stderr, "Failed to configure postproc: %s\n", vpx_codec_error(&decoder));
+    return EXIT_FAILURE;
+  }
+
+  if (vp8_dbg_color_ref_frame
+      && vpx_codec_control(&decoder, VP8_SET_DBG_COLOR_REF_FRAME, vp8_dbg_color_ref_frame)) {
+    fprintf(stderr, "Failed to configure reference block visualizer: %s\n", vpx_codec_error(&decoder));
+    return EXIT_FAILURE;
+  }
+
+  if (vp8_dbg_color_mb_modes
+      && vpx_codec_control(&decoder, VP8_SET_DBG_COLOR_MB_MODES, vp8_dbg_color_mb_modes)) {
+    fprintf(stderr, "Failed to configure macro block visualizer: %s\n", vpx_codec_error(&decoder));
+    return EXIT_FAILURE;
+  }
+
+  if (vp8_dbg_color_b_modes
+      && vpx_codec_control(&decoder, VP8_SET_DBG_COLOR_B_MODES, vp8_dbg_color_b_modes)) {
+    fprintf(stderr, "Failed to configure block visualizer: %s\n", vpx_codec_error(&decoder));
+    return EXIT_FAILURE;
+  }
+
+  if (vp8_dbg_display_mv
+      && vpx_codec_control(&decoder, VP8_SET_DBG_DISPLAY_MV, vp8_dbg_display_mv)) {
+    fprintf(stderr, "Failed to configure motion vector visualizer: %s\n", vpx_codec_error(&decoder));
+    return EXIT_FAILURE;
+  }
+#endif
+
+
+  if (arg_skip)
+    fprintf(stderr, "Skipping first %d frames.\n", arg_skip);
+  while (arg_skip) {
+    if (read_frame(&input, &buf, &bytes_in_buffer, &buffer_size))
+      break;
+    arg_skip--;
+  }
+
+  if (num_external_frame_buffers > 0) {
+    ext_fb_list.num_external_frame_buffers = num_external_frame_buffers;
+    ext_fb_list.ext_fb = (struct ExternalFrameBuffer *)calloc(
+        num_external_frame_buffers, sizeof(*ext_fb_list.ext_fb));
+    if (vpx_codec_set_frame_buffer_functions(
+            &decoder, get_vp9_frame_buffer, release_vp9_frame_buffer,
+            &ext_fb_list)) {
+      fprintf(stderr, "Failed to configure external frame buffers: %s\n",
+              vpx_codec_error(&decoder));
+      return EXIT_FAILURE;
+    }
+  }
+
+  frame_avail = 1;
+  got_data = 0;
+
+  /* Decode file */
+  while (frame_avail || got_data) {
+    vpx_codec_iter_t  iter = NULL;
+    vpx_image_t    *img;
+    struct vpx_usec_timer timer;
+    int                   corrupted = 0;
+
+    frame_avail = 0;
+    if (!stop_after || frame_in < stop_after) {
+      if (!read_frame(&input, &buf, &bytes_in_buffer, &buffer_size)) {
+        frame_avail = 1;
+        frame_in++;
+
+        vpx_usec_timer_start(&timer);
+
+        if (vpx_codec_decode(&decoder, buf, (unsigned int)bytes_in_buffer,
+                             NULL, 0)) {
+          const char *detail = vpx_codec_error_detail(&decoder);
+          warn("Failed to decode frame %d: %s",
+               frame_in, vpx_codec_error(&decoder));
+
+          if (detail)
+            warn("Additional information: %s", detail);
+          if (!keep_going)
+            goto fail;
+        }
+
+        vpx_usec_timer_mark(&timer);
+        dx_time += vpx_usec_timer_elapsed(&timer);
+      } else {
+        flush_decoder = 1;
+      }
+    } else {
+      flush_decoder = 1;
+    }
+
+    vpx_usec_timer_start(&timer);
+
+    if (flush_decoder) {
+      // Flush the decoder in frame parallel decode.
+      if (vpx_codec_decode(&decoder, NULL, 0, NULL, 0)) {
+        warn("Failed to flush decoder: %s", vpx_codec_error(&decoder));
+      }
+    }
+
+    got_data = 0;
+    if ((img = vpx_codec_get_frame(&decoder, &iter))) {
+      ++frame_out;
+      got_data = 1;
+    }
+
+    vpx_usec_timer_mark(&timer);
+    dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);
+
+    if (!frame_parallel &&
+        vpx_codec_control(&decoder, VP8D_GET_FRAME_CORRUPTED, &corrupted)) {
+      warn("Failed VP8_GET_FRAME_CORRUPTED: %s", vpx_codec_error(&decoder));
+      if (!keep_going)
+        goto fail;
+    }
+    frames_corrupted += corrupted;
+
+    if (progress)
+      show_progress(frame_in, frame_out, dx_time);
+
+    if (!noblit && img) {
+      const int PLANES_YUV[] = {VPX_PLANE_Y, VPX_PLANE_U, VPX_PLANE_V};
+      const int PLANES_YVU[] = {VPX_PLANE_Y, VPX_PLANE_V, VPX_PLANE_U};
+      const int *planes = flipuv ? PLANES_YVU : PLANES_YUV;
+
+      if (do_scale) {
+        if (frame_out == 1) {
+          // If the output frames are to be scaled to a fixed display size then
+          // use the width and height specified in the container. If either of
+          // these is set to 0, use the display size set in the first frame
+          // header. If that is unavailable, use the raw decoded size of the
+          // first decoded frame.
+          int display_width = vpx_input_ctx.width;
+          int display_height = vpx_input_ctx.height;
+          if (!display_width || !display_height) {
+            int display_size[2];
+            if (vpx_codec_control(&decoder, VP9D_GET_DISPLAY_SIZE,
+                                  display_size)) {
+              // As last resort use size of first frame as display size.
+              display_width = img->d_w;
+              display_height = img->d_h;
+            } else {
+              display_width = display_size[0];
+              display_height = display_size[1];
+            }
+          }
+          scaled_img = vpx_img_alloc(NULL, img->fmt, display_width,
+                                     display_height, 16);
+          scaled_img->bit_depth = img->bit_depth;
+        }
+
+        if (img->d_w != scaled_img->d_w || img->d_h != scaled_img->d_h) {
+#if CONFIG_LIBYUV
+          libyuv_scale(img, scaled_img, kFilterBox);
+          img = scaled_img;
+#else
+          fprintf(stderr, "Failed  to scale output frame: %s.\n"
+                  "Scaling is disabled in this configuration. "
+                  "To enable scaling, configure with --enable-libyuv\n",
+                  vpx_codec_error(&decoder));
+          return EXIT_FAILURE;
+#endif
+        }
+      }
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+      // Default to codec bit depth if output bit depth not set
+      if (!output_bit_depth) {
+        output_bit_depth = img->bit_depth;
+      }
+      // Shift up or down if necessary
+      if (output_bit_depth != img->bit_depth) {
+        const vpx_img_fmt_t shifted_fmt = output_bit_depth == 8 ?
+            img->fmt ^ (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) :
+            img->fmt | VPX_IMG_FMT_HIGHBITDEPTH;
+        if (img_shifted &&
+            img_shifted_realloc_required(img, img_shifted, shifted_fmt)) {
+          vpx_img_free(img_shifted);
+          img_shifted = NULL;
+        }
+        if (!img_shifted) {
+          img_shifted = vpx_img_alloc(NULL, shifted_fmt,
+                                      img->d_w, img->d_h, 16);
+          img_shifted->bit_depth = output_bit_depth;
+        }
+        if (output_bit_depth > img->bit_depth) {
+          vpx_img_upshift(img_shifted, img,
+                          output_bit_depth - img->bit_depth);
+        } else {
+          vpx_img_downshift(img_shifted, img,
+                            img->bit_depth - output_bit_depth);
+        }
+        img = img_shifted;
+      }
+#endif
+
+      if (single_file) {
+        if (use_y4m) {
+          char buf[Y4M_BUFFER_SIZE] = {0};
+          size_t len = 0;
+          if (img->fmt == VPX_IMG_FMT_I440 || img->fmt == VPX_IMG_FMT_I44016) {
+            fprintf(stderr, "Cannot produce y4m output for 440 sampling.\n");
+            goto fail;
+          }
+          if (frame_out == 1) {
+            // Y4M file header
+            len = y4m_write_file_header(buf, sizeof(buf),
+                                        vpx_input_ctx.width,
+                                        vpx_input_ctx.height,
+                                        &vpx_input_ctx.framerate,
+                                        img->fmt, img->bit_depth);
+            if (do_md5) {
+              MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
+            } else {
+              fputs(buf, outfile);
+            }
+          }
+
+          // Y4M frame header
+          len = y4m_write_frame_header(buf, sizeof(buf));
+          if (do_md5) {
+            MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
+          } else {
+            fputs(buf, outfile);
+          }
+        } else {
+          if (frame_out == 1) {
+            // Check if --yv12 or --i420 options are consistent with the
+            // bit-stream decoded
+            if (opt_i420) {
+              if (img->fmt != VPX_IMG_FMT_I420 &&
+                  img->fmt != VPX_IMG_FMT_I42016) {
+                fprintf(stderr, "Cannot produce i420 output for bit-stream.\n");
+                goto fail;
+              }
+            }
+            if (opt_yv12) {
+              if ((img->fmt != VPX_IMG_FMT_I420 &&
+                   img->fmt != VPX_IMG_FMT_YV12) || img->bit_depth != 8) {
+                fprintf(stderr, "Cannot produce yv12 output for bit-stream.\n");
+                goto fail;
+              }
+            }
+          }
+        }
+
+        if (do_md5) {
+          update_image_md5(img, planes, &md5_ctx);
+        } else {
+          write_image_file(img, planes, outfile);
+        }
+      } else {
+        generate_filename(outfile_pattern, outfile_name, PATH_MAX,
+                          img->d_w, img->d_h, frame_in);
+        if (do_md5) {
+          MD5Init(&md5_ctx);
+          update_image_md5(img, planes, &md5_ctx);
+          MD5Final(md5_digest, &md5_ctx);
+          print_md5(md5_digest, outfile_name);
+        } else {
+          outfile = open_outfile(outfile_name);
+          write_image_file(img, planes, outfile);
+          fclose(outfile);
+        }
+      }
+    }
+  }
+
+  if (summary || progress) {
+    show_progress(frame_in, frame_out, dx_time);
+    fprintf(stderr, "\n");
+  }
+
+  if (frames_corrupted)
+    fprintf(stderr, "WARNING: %d frames corrupted.\n", frames_corrupted);
+
+fail:
+
+  if (vpx_codec_destroy(&decoder)) {
+    fprintf(stderr, "Failed to destroy decoder: %s\n",
+            vpx_codec_error(&decoder));
+    return EXIT_FAILURE;
+  }
+
+  if (!noblit && single_file) {
+    if (do_md5) {
+      MD5Final(md5_digest, &md5_ctx);
+      print_md5(md5_digest, outfile_name);
+    } else {
+      fclose(outfile);
+    }
+  }
+
+#if CONFIG_WEBM_IO
+  if (input.vpx_input_ctx->file_type == FILE_TYPE_WEBM)
+    webm_free(input.webm_ctx);
+#endif
+
+  if (input.vpx_input_ctx->file_type != FILE_TYPE_WEBM)
+    free(buf);
+
+  if (scaled_img) vpx_img_free(scaled_img);
+#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
+  if (img_shifted) vpx_img_free(img_shifted);
+#endif
+
+  for (i = 0; i < ext_fb_list.num_external_frame_buffers; ++i) {
+    free(ext_fb_list.ext_fb[i].data);
+  }
+  free(ext_fb_list.ext_fb);
+
+  fclose(infile);
+  free(argv);
+
+  return frames_corrupted ? EXIT_FAILURE : EXIT_SUCCESS;
+}
+
+int main(int argc, const char **argv_) {
+  unsigned int loops = 1, i;
+  char **argv, **argi, **argj;
+  struct arg arg;
+  int error = 0;
+
+  argv = argv_dup(argc - 1, argv_ + 1);
+  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
+    memset(&arg, 0, sizeof(arg));
+    arg.argv_step = 1;
+
+    if (arg_match(&arg, &looparg, argi)) {
+      loops = arg_parse_uint(&arg);
+      break;
+    }
+  }
+  free(argv);
+  for (i = 0; !error && i < loops; i++)
+    error = main_loop(argc, argv_);
+  return error;
+}