/*
 *  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 "vpx_config.h"

/* This is a simple program that encodes YV12 files and generates ivf
 * files using the new interface.
 */
#if defined(_WIN32) || !CONFIG_OS_SUPPORT
#define USE_POSIX_MMAP 0
#else
#define USE_POSIX_MMAP 1
#endif

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <limits.h>
#include <assert.h>
#include "vpx/vpx_encoder.h"
#if USE_POSIX_MMAP
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#endif
#include "vpx_config.h"
#include "vpx_version.h"
#include "vpx/vp8cx.h"
#include "vpx/vp8dx.h"
#include "vpx/vpx_decoder.h"
#include "vpx_ports/mem_ops.h"
#include "vpx_ports/vpx_timer.h"
#include "tools_common.h"
#include "y4minput.h"
#include "libmkv/EbmlWriter.h"
#include "libmkv/EbmlIDs.h"

/* Need special handling of these functions on Windows */
#if defined(_MSC_VER)
/* MSVS doesn't define off_t, and uses _f{seek,tell}i64 */
typedef __int64 off_t;
#define fseeko _fseeki64
#define ftello _ftelli64
#elif defined(_WIN32)
/* MinGW defines off_t, and uses f{seek,tell}o64 */
#define fseeko fseeko64
#define ftello ftello64
#endif

#if defined(_MSC_VER)
#define LITERALU64(n) n
#else
#define LITERALU64(n) n##LLU
#endif

/* We should use 32-bit file operations in WebM file format
 * when building ARM executable file (.axf) with RVCT */
#if !CONFIG_OS_SUPPORT
typedef long off_t;
#define fseeko fseek
#define ftello ftell
#endif

static const char *exec_name;


#define VP8_FOURCC (0x78385056)
static const struct {
  char const *name;
  const vpx_codec_iface_t *(*iface)(void);
  unsigned int             fourcc;
  unsigned int             fourcc_mask;
} ifaces[] = {
#if CONFIG_VP8_DECODER
  {"vp8",  &vpx_codec_vp8_dx,   VP8_FOURCC, 0x00FFFFFF},
#endif
};

static const struct codec_item {
  char const *name;
  const vpx_codec_iface_t *(*iface)(void);
  unsigned int             fourcc;
  unsigned int             fourcc_mask;
} codecs[] = {
#if CONFIG_VP8_ENCODER
  {"vp8",  vpx_codec_vp8x_cx,   VP8_FOURCC, 0x00FFFFFF},
#endif
};


static void usage_exit();

void die(const char *fmt, ...) {
  va_list ap;
  va_start(ap, fmt);
  vfprintf(stderr, fmt, ap);
  fprintf(stderr, "\n");
  usage_exit();
}

static void ctx_exit_on_error(vpx_codec_ctx_t *ctx, const char *s) {
  if (ctx->err) {
    const char *detail = vpx_codec_error_detail(ctx);

    fprintf(stderr, "%s: %s\n", s, vpx_codec_error(ctx));

    if (detail)
      fprintf(stderr, "    %s\n", detail);

    exit(EXIT_FAILURE);
  }
}

/* This structure is used to abstract the different ways of handling
 * first pass statistics.
 */
typedef struct {
  vpx_fixed_buf_t buf;
  int             pass;
  FILE           *file;
  char           *buf_ptr;
  size_t          buf_alloc_sz;
} stats_io_t;

int stats_open_file(stats_io_t *stats, const char *fpf, int pass) {
  int res;

  stats->pass = pass;

  if (pass == 0) {
    stats->file = fopen(fpf, "wb");
    stats->buf.sz = 0;
    stats->buf.buf = NULL,
               res = (stats->file != NULL);
  } else {
#if 0
#elif USE_POSIX_MMAP
    struct stat stat_buf;
    int fd;

    fd = open(fpf, O_RDONLY);
    stats->file = fdopen(fd, "rb");
    fstat(fd, &stat_buf);
    stats->buf.sz = stat_buf.st_size;
    stats->buf.buf = mmap(NULL, stats->buf.sz, PROT_READ, MAP_PRIVATE,
                          fd, 0);
    res = (stats->buf.buf != NULL);
#else
    size_t nbytes;

    stats->file = fopen(fpf, "rb");

    if (fseek(stats->file, 0, SEEK_END)) {
      fprintf(stderr, "First-pass stats file must be seekable!\n");
      exit(EXIT_FAILURE);
    }

    stats->buf.sz = stats->buf_alloc_sz = ftell(stats->file);
    rewind(stats->file);

    stats->buf.buf = malloc(stats->buf_alloc_sz);

    if (!stats->buf.buf) {
      fprintf(stderr, "Failed to allocate first-pass stats buffer (%lu bytes)\n",
              (unsigned long)stats->buf_alloc_sz);
      exit(EXIT_FAILURE);
    }

    nbytes = fread(stats->buf.buf, 1, stats->buf.sz, stats->file);
    res = (nbytes == stats->buf.sz);
#endif
  }

  return res;
}

int stats_open_mem(stats_io_t *stats, int pass) {
  int res;
  stats->pass = pass;

  if (!pass) {
    stats->buf.sz = 0;
    stats->buf_alloc_sz = 64 * 1024;
    stats->buf.buf = malloc(stats->buf_alloc_sz);
  }

  stats->buf_ptr = stats->buf.buf;
  res = (stats->buf.buf != NULL);
  return res;
}


void stats_close(stats_io_t *stats, int last_pass) {
  if (stats->file) {
    if (stats->pass == last_pass) {
#if 0
#elif USE_POSIX_MMAP
      munmap(stats->buf.buf, stats->buf.sz);
#else
      free(stats->buf.buf);
#endif
    }

    fclose(stats->file);
    stats->file = NULL;
  } else {
    if (stats->pass == last_pass)
      free(stats->buf.buf);
  }
}

void stats_write(stats_io_t *stats, const void *pkt, size_t len) {
  if (stats->file) {
    if (fwrite(pkt, 1, len, stats->file));
  } else {
    if (stats->buf.sz + len > stats->buf_alloc_sz) {
      size_t  new_sz = stats->buf_alloc_sz + 64 * 1024;
      char   *new_ptr = realloc(stats->buf.buf, new_sz);

      if (new_ptr) {
        stats->buf_ptr = new_ptr + (stats->buf_ptr - (char *)stats->buf.buf);
        stats->buf.buf = new_ptr;
        stats->buf_alloc_sz = new_sz;
      } else {
        fprintf(stderr,
                "\nFailed to realloc firstpass stats buffer.\n");
        exit(EXIT_FAILURE);
      }
    }

    memcpy(stats->buf_ptr, pkt, len);
    stats->buf.sz += len;
    stats->buf_ptr += len;
  }
}

vpx_fixed_buf_t stats_get(stats_io_t *stats) {
  return stats->buf;
}

/* Stereo 3D packed frame format */
typedef enum stereo_format {
  STEREO_FORMAT_MONO       = 0,
  STEREO_FORMAT_LEFT_RIGHT = 1,
  STEREO_FORMAT_BOTTOM_TOP = 2,
  STEREO_FORMAT_TOP_BOTTOM = 3,
  STEREO_FORMAT_RIGHT_LEFT = 11
} stereo_format_t;

enum video_file_type {
  FILE_TYPE_RAW,
  FILE_TYPE_IVF,
  FILE_TYPE_Y4M
};

struct detect_buffer {
  char buf[4];
  size_t buf_read;
  size_t position;
};


#define IVF_FRAME_HDR_SZ (4+8) /* 4 byte size + 8 byte timestamp */
static int read_frame(FILE *f, vpx_image_t *img, unsigned int file_type,
                      y4m_input *y4m, struct detect_buffer *detect) {
  int plane = 0;
  int shortread = 0;

  if (file_type == FILE_TYPE_Y4M) {
    if (y4m_input_fetch_frame(y4m, f, img) < 1)
      return 0;
  } else {
    if (file_type == FILE_TYPE_IVF) {
      char junk[IVF_FRAME_HDR_SZ];

      /* Skip the frame header. We know how big the frame should be. See
       * write_ivf_frame_header() for documentation on the frame header
       * layout.
       */
      if (fread(junk, 1, IVF_FRAME_HDR_SZ, f));
    }

    for (plane = 0; plane < 3; plane++) {
      unsigned char *ptr;
      int w = (plane ? (1 + img->d_w) / 2 : img->d_w);
      int h = (plane ? (1 + img->d_h) / 2 : img->d_h);
      int r;

      /* Determine the correct plane based on the image format. The for-loop
       * always counts in Y,U,V order, but this may not match the order of
       * the data on disk.
       */
      switch (plane) {
        case 1:
          ptr = img->planes[img->fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_V : VPX_PLANE_U];
          break;
        case 2:
          ptr = img->planes[img->fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_U : VPX_PLANE_V];
          break;
        default:
          ptr = img->planes[plane];
      }

      for (r = 0; r < h; r++) {
        size_t needed = w;
        size_t buf_position = 0;
        const size_t left = detect->buf_read - detect->position;
        if (left > 0) {
          const size_t more = (left < needed) ? left : needed;
          memcpy(ptr, detect->buf + detect->position, more);
          buf_position = more;
          needed -= more;
          detect->position += more;
        }
        if (needed > 0) {
          shortread |= (fread(ptr + buf_position, 1, needed, f) < needed);
        }

        ptr += img->stride[plane];
      }
    }
  }

  return !shortread;
}


unsigned int file_is_y4m(FILE      *infile,
                         y4m_input *y4m,
                         char       detect[4]) {
  if (memcmp(detect, "YUV4", 4) == 0) {
    return 1;
  }
  return 0;
}

#define IVF_FILE_HDR_SZ (32)
unsigned int file_is_ivf(FILE *infile,
                         unsigned int *fourcc,
                         unsigned int *width,
                         unsigned int *height,
                         struct detect_buffer *detect) {
  char raw_hdr[IVF_FILE_HDR_SZ];
  int is_ivf = 0;

  if (memcmp(detect->buf, "DKIF", 4) != 0)
    return 0;

  /* See write_ivf_file_header() for more documentation on the file header
   * layout.
   */
  if (fread(raw_hdr + 4, 1, IVF_FILE_HDR_SZ - 4, infile)
      == IVF_FILE_HDR_SZ - 4) {
    {
      is_ivf = 1;

      if (mem_get_le16(raw_hdr + 4) != 0)
        fprintf(stderr, "Error: Unrecognized IVF version! This file may not"
                " decode properly.");

      *fourcc = mem_get_le32(raw_hdr + 8);
    }
  }

  if (is_ivf) {
    *width = mem_get_le16(raw_hdr + 12);
    *height = mem_get_le16(raw_hdr + 14);
    detect->position = 4;
  }

  return is_ivf;
}


static void write_ivf_file_header(FILE *outfile,
                                  const vpx_codec_enc_cfg_t *cfg,
                                  unsigned int fourcc,
                                  int frame_cnt) {
  char header[32];

  if (cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
    return;

  header[0] = 'D';
  header[1] = 'K';
  header[2] = 'I';
  header[3] = 'F';
  mem_put_le16(header + 4,  0);                 /* version */
  mem_put_le16(header + 6,  32);                /* headersize */
  mem_put_le32(header + 8,  fourcc);            /* headersize */
  mem_put_le16(header + 12, cfg->g_w);          /* width */
  mem_put_le16(header + 14, cfg->g_h);          /* height */
  mem_put_le32(header + 16, cfg->g_timebase.den); /* rate */
  mem_put_le32(header + 20, cfg->g_timebase.num); /* scale */
  mem_put_le32(header + 24, frame_cnt);         /* length */
  mem_put_le32(header + 28, 0);                 /* unused */

  if (fwrite(header, 1, 32, outfile));
}


static void write_ivf_frame_header(FILE *outfile,
                                   const vpx_codec_cx_pkt_t *pkt) {
  char             header[12];
  vpx_codec_pts_t  pts;

  if (pkt->kind != VPX_CODEC_CX_FRAME_PKT)
    return;

  pts = pkt->data.frame.pts;
  mem_put_le32(header, pkt->data.frame.sz);
  mem_put_le32(header + 4, pts & 0xFFFFFFFF);
  mem_put_le32(header + 8, pts >> 32);

  if (fwrite(header, 1, 12, outfile));
}


typedef off_t EbmlLoc;


struct cue_entry {
  unsigned int time;
  uint64_t     loc;
};


struct EbmlGlobal {
  int debug;

  FILE    *stream;
  int64_t last_pts_ms;
  vpx_rational_t  framerate;

  /* These pointers are to the start of an element */
  off_t    position_reference;
  off_t    seek_info_pos;
  off_t    segment_info_pos;
  off_t    track_pos;
  off_t    cue_pos;
  off_t    cluster_pos;

  /* This pointer is to a specific element to be serialized */
  off_t    track_id_pos;

  /* These pointers are to the size field of the element */
  EbmlLoc  startSegment;
  EbmlLoc  startCluster;

  uint32_t cluster_timecode;
  int      cluster_open;

  struct cue_entry *cue_list;
  unsigned int      cues;

};


void Ebml_Write(EbmlGlobal *glob, const void *buffer_in, unsigned long len) {
  if (fwrite(buffer_in, 1, len, glob->stream));
}

#define WRITE_BUFFER(s) \
  for(i = len-1; i>=0; i--)\
  { \
    x = *(const s *)buffer_in >> (i * CHAR_BIT); \
    Ebml_Write(glob, &x, 1); \
  }
void Ebml_Serialize(EbmlGlobal *glob, const void *buffer_in, int buffer_size, unsigned long len) {
  char x;
  int i;

  /* buffer_size:
   * 1 - int8_t;
   * 2 - int16_t;
   * 3 - int32_t;
   * 4 - int64_t;
   */
  switch (buffer_size) {
    case 1:
      WRITE_BUFFER(int8_t)
      break;
    case 2:
      WRITE_BUFFER(int16_t)
      break;
    case 4:
      WRITE_BUFFER(int32_t)
      break;
    case 8:
      WRITE_BUFFER(int64_t)
      break;
    default:
      break;
  }
}
#undef WRITE_BUFFER

/* Need a fixed size serializer for the track ID. libmkv provides a 64 bit
 * one, but not a 32 bit one.
 */
static void Ebml_SerializeUnsigned32(EbmlGlobal *glob, unsigned long class_id, uint64_t ui) {
  unsigned char sizeSerialized = 4 | 0x80;
  Ebml_WriteID(glob, class_id);
  Ebml_Serialize(glob, &sizeSerialized, sizeof(sizeSerialized), 1);
  Ebml_Serialize(glob, &ui, sizeof(ui), 4);
}


static void
Ebml_StartSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc,
                     unsigned long class_id) {
  // todo this is always taking 8 bytes, this may need later optimization
  // this is a key that says length unknown
  uint64_t unknownLen =  LITERALU64(0x01FFFFFFFFFFFFFF);

  Ebml_WriteID(glob, class_id);
  *ebmlLoc = ftello(glob->stream);
  Ebml_Serialize(glob, &unknownLen, sizeof(unknownLen), 8);
}

static void
Ebml_EndSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc) {
  off_t pos;
  uint64_t size;

  /* Save the current stream pointer */
  pos = ftello(glob->stream);

  /* Calculate the size of this element */
  size = pos - *ebmlLoc - 8;
  size |=  LITERALU64(0x0100000000000000);

  /* Seek back to the beginning of the element and write the new size */
  fseeko(glob->stream, *ebmlLoc, SEEK_SET);
  Ebml_Serialize(glob, &size, sizeof(size), 8);

  /* Reset the stream pointer */
  fseeko(glob->stream, pos, SEEK_SET);
}


static void
write_webm_seek_element(EbmlGlobal *ebml, unsigned long id, off_t pos) {
  uint64_t offset = pos - ebml->position_reference;
  EbmlLoc start;
  Ebml_StartSubElement(ebml, &start, Seek);
  Ebml_SerializeBinary(ebml, SeekID, id);
  Ebml_SerializeUnsigned64(ebml, SeekPosition, offset);
  Ebml_EndSubElement(ebml, &start);
}


static void
write_webm_seek_info(EbmlGlobal *ebml) {

  off_t pos;

  /* Save the current stream pointer */
  pos = ftello(ebml->stream);

  if (ebml->seek_info_pos)
    fseeko(ebml->stream, ebml->seek_info_pos, SEEK_SET);
  else
    ebml->seek_info_pos = pos;

  {
    EbmlLoc start;

    Ebml_StartSubElement(ebml, &start, SeekHead);
    write_webm_seek_element(ebml, Tracks, ebml->track_pos);
    write_webm_seek_element(ebml, Cues,   ebml->cue_pos);
    write_webm_seek_element(ebml, Info,   ebml->segment_info_pos);
    Ebml_EndSubElement(ebml, &start);
  }
  {
    // segment info
    EbmlLoc startInfo;
    uint64_t frame_time;

    frame_time = (uint64_t)1000 * ebml->framerate.den
                 / ebml->framerate.num;
    ebml->segment_info_pos = ftello(ebml->stream);
    Ebml_StartSubElement(ebml, &startInfo, Info);
    Ebml_SerializeUnsigned(ebml, TimecodeScale, 1000000);
    Ebml_SerializeFloat(ebml, Segment_Duration,
                        ebml->last_pts_ms + frame_time);
    Ebml_SerializeString(ebml, 0x4D80,
                         ebml->debug ? "vpxenc" : "vpxenc" VERSION_STRING);
    Ebml_SerializeString(ebml, 0x5741,
                         ebml->debug ? "vpxenc" : "vpxenc" VERSION_STRING);
    Ebml_EndSubElement(ebml, &startInfo);
  }
}


static void
write_webm_file_header(EbmlGlobal                *glob,
                       const vpx_codec_enc_cfg_t *cfg,
                       const struct vpx_rational *fps,
                       stereo_format_t            stereo_fmt) {
  {
    EbmlLoc start;
    Ebml_StartSubElement(glob, &start, EBML);
    Ebml_SerializeUnsigned(glob, EBMLVersion, 1);
    Ebml_SerializeUnsigned(glob, EBMLReadVersion, 1); // EBML Read Version
    Ebml_SerializeUnsigned(glob, EBMLMaxIDLength, 4); // EBML Max ID Length
    Ebml_SerializeUnsigned(glob, EBMLMaxSizeLength, 8); // EBML Max Size Length
    Ebml_SerializeString(glob, DocType, "webm"); // Doc Type
    Ebml_SerializeUnsigned(glob, DocTypeVersion, 2); // Doc Type Version
    Ebml_SerializeUnsigned(glob, DocTypeReadVersion, 2); // Doc Type Read Version
    Ebml_EndSubElement(glob, &start);
  }
  {
    Ebml_StartSubElement(glob, &glob->startSegment, Segment); // segment
    glob->position_reference = ftello(glob->stream);
    glob->framerate = *fps;
    write_webm_seek_info(glob);

    {
      EbmlLoc trackStart;
      glob->track_pos = ftello(glob->stream);
      Ebml_StartSubElement(glob, &trackStart, Tracks);
      {
        unsigned int trackNumber = 1;
        uint64_t     trackID = 0;

        EbmlLoc start;
        Ebml_StartSubElement(glob, &start, TrackEntry);
        Ebml_SerializeUnsigned(glob, TrackNumber, trackNumber);
        glob->track_id_pos = ftello(glob->stream);
        Ebml_SerializeUnsigned32(glob, TrackUID, trackID);
        Ebml_SerializeUnsigned(glob, TrackType, 1); // video is always 1
        Ebml_SerializeString(glob, CodecID, "V_VP8");
        {
          unsigned int pixelWidth = cfg->g_w;
          unsigned int pixelHeight = cfg->g_h;
          float        frameRate   = (float)fps->num / (float)fps->den;

          EbmlLoc videoStart;
          Ebml_StartSubElement(glob, &videoStart, Video);
          Ebml_SerializeUnsigned(glob, PixelWidth, pixelWidth);
          Ebml_SerializeUnsigned(glob, PixelHeight, pixelHeight);
          Ebml_SerializeUnsigned(glob, StereoMode, stereo_fmt);
          Ebml_SerializeFloat(glob, FrameRate, frameRate);
          Ebml_EndSubElement(glob, &videoStart); // Video
        }
        Ebml_EndSubElement(glob, &start); // Track Entry
      }
      Ebml_EndSubElement(glob, &trackStart);
    }
    // segment element is open
  }
}


static void
write_webm_block(EbmlGlobal                *glob,
                 const vpx_codec_enc_cfg_t *cfg,
                 const vpx_codec_cx_pkt_t  *pkt) {
  unsigned long  block_length;
  unsigned char  track_number;
  unsigned short block_timecode = 0;
  unsigned char  flags;
  int64_t        pts_ms;
  int            start_cluster = 0, is_keyframe;

  /* Calculate the PTS of this frame in milliseconds */
  pts_ms = pkt->data.frame.pts * 1000
           * (uint64_t)cfg->g_timebase.num / (uint64_t)cfg->g_timebase.den;
  if (pts_ms <= glob->last_pts_ms)
    pts_ms = glob->last_pts_ms + 1;
  glob->last_pts_ms = pts_ms;

  /* Calculate the relative time of this block */
  if (pts_ms - glob->cluster_timecode > SHRT_MAX)
    start_cluster = 1;
  else
    block_timecode = pts_ms - glob->cluster_timecode;

  is_keyframe = (pkt->data.frame.flags & VPX_FRAME_IS_KEY);
  if (start_cluster || is_keyframe) {
    if (glob->cluster_open)
      Ebml_EndSubElement(glob, &glob->startCluster);

    /* Open the new cluster */
    block_timecode = 0;
    glob->cluster_open = 1;
    glob->cluster_timecode = pts_ms;
    glob->cluster_pos = ftello(glob->stream);
    Ebml_StartSubElement(glob, &glob->startCluster, Cluster); // cluster
    Ebml_SerializeUnsigned(glob, Timecode, glob->cluster_timecode);

    /* Save a cue point if this is a keyframe. */
    if (is_keyframe) {
      struct cue_entry *cue, *new_cue_list;

      new_cue_list = realloc(glob->cue_list,
                             (glob->cues + 1) * sizeof(struct cue_entry));
      if (new_cue_list)
        glob->cue_list = new_cue_list;
      else {
        fprintf(stderr, "\nFailed to realloc cue list.\n");
        exit(EXIT_FAILURE);
      }

      cue = &glob->cue_list[glob->cues];
      cue->time = glob->cluster_timecode;
      cue->loc = glob->cluster_pos;
      glob->cues++;
    }
  }

  /* Write the Simple Block */
  Ebml_WriteID(glob, SimpleBlock);

  block_length = pkt->data.frame.sz + 4;
  block_length |= 0x10000000;
  Ebml_Serialize(glob, &block_length, sizeof(block_length), 4);

  track_number = 1;
  track_number |= 0x80;
  Ebml_Write(glob, &track_number, 1);

  Ebml_Serialize(glob, &block_timecode, sizeof(block_timecode), 2);

  flags = 0;
  if (is_keyframe)
    flags |= 0x80;
  if (pkt->data.frame.flags & VPX_FRAME_IS_INVISIBLE)
    flags |= 0x08;
  Ebml_Write(glob, &flags, 1);

  Ebml_Write(glob, pkt->data.frame.buf, pkt->data.frame.sz);
}


static void
write_webm_file_footer(EbmlGlobal *glob, long hash) {

  if (glob->cluster_open)
    Ebml_EndSubElement(glob, &glob->startCluster);

  {
    EbmlLoc start;
    int i;

    glob->cue_pos = ftello(glob->stream);
    Ebml_StartSubElement(glob, &start, Cues);
    for (i = 0; i < glob->cues; i++) {
      struct cue_entry *cue = &glob->cue_list[i];
      EbmlLoc start;

      Ebml_StartSubElement(glob, &start, CuePoint);
      {
        EbmlLoc start;

        Ebml_SerializeUnsigned(glob, CueTime, cue->time);

        Ebml_StartSubElement(glob, &start, CueTrackPositions);
        Ebml_SerializeUnsigned(glob, CueTrack, 1);
        Ebml_SerializeUnsigned64(glob, CueClusterPosition,
                                 cue->loc - glob->position_reference);
        // Ebml_SerializeUnsigned(glob, CueBlockNumber, cue->blockNumber);
        Ebml_EndSubElement(glob, &start);
      }
      Ebml_EndSubElement(glob, &start);
    }
    Ebml_EndSubElement(glob, &start);
  }

  Ebml_EndSubElement(glob, &glob->startSegment);

  /* Patch up the seek info block */
  write_webm_seek_info(glob);

  /* Patch up the track id */
  fseeko(glob->stream, glob->track_id_pos, SEEK_SET);
  Ebml_SerializeUnsigned32(glob, TrackUID, glob->debug ? 0xDEADBEEF : hash);

  fseeko(glob->stream, 0, SEEK_END);
}


/* Murmur hash derived from public domain reference implementation at
 *   http:// sites.google.com/site/murmurhash/
 */
static unsigned int murmur(const void *key, int len, unsigned int seed) {
  const unsigned int m = 0x5bd1e995;
  const int r = 24;

  unsigned int h = seed ^ len;

  const unsigned char *data = (const unsigned char *)key;

  while (len >= 4) {
    unsigned int k;

    k  = data[0];
    k |= data[1] << 8;
    k |= data[2] << 16;
    k |= data[3] << 24;

    k *= m;
    k ^= k >> r;
    k *= m;

    h *= m;
    h ^= k;

    data += 4;
    len -= 4;
  }

  switch (len) {
    case 3:
      h ^= data[2] << 16;
    case 2:
      h ^= data[1] << 8;
    case 1:
      h ^= data[0];
      h *= m;
  };

  h ^= h >> 13;
  h *= m;
  h ^= h >> 15;

  return h;
}

#include "math.h"
#define MAX_PSNR 100
static double vp8_mse2psnr(double Samples, double Peak, double Mse) {
  double psnr;

  if ((double)Mse > 0.0)
    psnr = 10.0 * log10(Peak * Peak * Samples / Mse);
  else
    psnr = MAX_PSNR;      // Limit to prevent / 0

  if (psnr > MAX_PSNR)
    psnr = MAX_PSNR;

  return psnr;
}


#include "args.h"

static const arg_def_t debugmode = ARG_DEF("D", "debug", 0,
                                           "Debug mode (makes output deterministic)");
static const arg_def_t outputfile = ARG_DEF("o", "output", 1,
                                            "Output filename");
static const arg_def_t use_yv12 = ARG_DEF(NULL, "yv12", 0,
                                          "Input file is YV12 ");
static const arg_def_t use_i420 = ARG_DEF(NULL, "i420", 0,
                                          "Input file is I420 (default)");
static const arg_def_t codecarg = ARG_DEF(NULL, "codec", 1,
                                          "Codec to use");
static const arg_def_t passes           = ARG_DEF("p", "passes", 1,
                                                  "Number of passes (1/2)");
static const arg_def_t pass_arg         = ARG_DEF(NULL, "pass", 1,
                                                  "Pass to execute (1/2)");
static const arg_def_t fpf_name         = ARG_DEF(NULL, "fpf", 1,
                                                  "First pass statistics file name");
static const arg_def_t limit = ARG_DEF(NULL, "limit", 1,
                                       "Stop encoding after n input frames");
static const arg_def_t skip = ARG_DEF(NULL, "skip", 1,
                                      "Skip the first n input frames");
static const arg_def_t deadline         = ARG_DEF("d", "deadline", 1,
                                                  "Deadline per frame (usec)");
static const arg_def_t best_dl          = ARG_DEF(NULL, "best", 0,
                                                  "Use Best Quality Deadline");
static const arg_def_t good_dl          = ARG_DEF(NULL, "good", 0,
                                                  "Use Good Quality Deadline");
static const arg_def_t rt_dl            = ARG_DEF(NULL, "rt", 0,
                                                  "Use Realtime Quality Deadline");
static const arg_def_t verbosearg       = ARG_DEF("v", "verbose", 0,
                                                  "Show encoder parameters");
static const arg_def_t psnrarg          = ARG_DEF(NULL, "psnr", 0,
                                                  "Show PSNR in status line");
static const arg_def_t recontest        = ARG_DEF(NULL, "test-decode", 0,
                                                  "Test enocde/decode have machted recon buffer");
static const arg_def_t framerate        = ARG_DEF(NULL, "fps", 1,
                                                  "Stream frame rate (rate/scale)");
static const arg_def_t use_ivf          = ARG_DEF(NULL, "ivf", 0,
                                                  "Output IVF (default is WebM)");
static const arg_def_t q_hist_n         = ARG_DEF(NULL, "q-hist", 1,
                                                  "Show quantizer histogram (n-buckets)");
static const arg_def_t rate_hist_n         = ARG_DEF(NULL, "rate-hist", 1,
                                                     "Show rate histogram (n-buckets)");
#if CONFIG_LOSSLESS
static const arg_def_t lossless_enabled = ARG_DEF(NULL, "lossless", 0,
                                                  "Enable lossless compression");
#endif
static const arg_def_t *main_args[] = {
  &debugmode,
  &outputfile, &codecarg, &passes, &pass_arg, &fpf_name, &limit, &skip,
  &deadline,
  &best_dl, &good_dl, &rt_dl,
  &verbosearg, &psnrarg, &recontest, &use_ivf, &q_hist_n, &rate_hist_n,
#if CONFIG_LOSSLESS
  &lossless_enabled,
#endif
  NULL
};

static const arg_def_t usage            = ARG_DEF("u", "usage", 1,
                                                  "Usage profile number to use");
static const arg_def_t threads          = ARG_DEF("t", "threads", 1,
                                                  "Max number of threads to use");
static const arg_def_t profile          = ARG_DEF(NULL, "profile", 1,
                                                  "Bitstream profile number to use");
static const arg_def_t width            = ARG_DEF("w", "width", 1,
                                                  "Frame width");
static const arg_def_t height           = ARG_DEF("h", "height", 1,
                                                  "Frame height");
static const struct arg_enum_list stereo_mode_enum[] = {
  {"mono", STEREO_FORMAT_MONO},
  {"left-right", STEREO_FORMAT_LEFT_RIGHT},
  {"bottom-top", STEREO_FORMAT_BOTTOM_TOP},
  {"top-bottom", STEREO_FORMAT_TOP_BOTTOM},
  {"right-left", STEREO_FORMAT_RIGHT_LEFT},
  {NULL, 0}
};
static const arg_def_t stereo_mode      = ARG_DEF_ENUM(NULL, "stereo-mode", 1,
                                                       "Stereo 3D video format", stereo_mode_enum);
static const arg_def_t timebase         = ARG_DEF(NULL, "timebase", 1,
                                                  "Output timestamp precision (fractional seconds)");
static const arg_def_t error_resilient  = ARG_DEF(NULL, "error-resilient", 1,
                                                  "Enable error resiliency features");
static const arg_def_t lag_in_frames    = ARG_DEF(NULL, "lag-in-frames", 1,
                                                  "Max number of frames to lag");

static const arg_def_t *global_args[] = {
  &use_yv12, &use_i420, &usage, &threads, &profile,
  &width, &height, &stereo_mode, &timebase, &framerate, &error_resilient,
  &lag_in_frames, NULL
};

static const arg_def_t dropframe_thresh   = ARG_DEF(NULL, "drop-frame", 1,
                                                    "Temporal resampling threshold (buf %)");
static const arg_def_t resize_allowed     = ARG_DEF(NULL, "resize-allowed", 1,
                                                    "Spatial resampling enabled (bool)");
static const arg_def_t resize_up_thresh   = ARG_DEF(NULL, "resize-up", 1,
                                                    "Upscale threshold (buf %)");
static const arg_def_t resize_down_thresh = ARG_DEF(NULL, "resize-down", 1,
                                                    "Downscale threshold (buf %)");
static const struct arg_enum_list end_usage_enum[] = {
  {"vbr", VPX_VBR},
  {"cbr", VPX_CBR},
  {"cq",  VPX_CQ},
  {NULL, 0}
};
static const arg_def_t end_usage          = ARG_DEF_ENUM(NULL, "end-usage", 1,
                                                         "Rate control mode", end_usage_enum);
static const arg_def_t target_bitrate     = ARG_DEF(NULL, "target-bitrate", 1,
                                                    "Bitrate (kbps)");
static const arg_def_t min_quantizer      = ARG_DEF(NULL, "min-q", 1,
                                                    "Minimum (best) quantizer");
static const arg_def_t max_quantizer      = ARG_DEF(NULL, "max-q", 1,
                                                    "Maximum (worst) quantizer");
static const arg_def_t undershoot_pct     = ARG_DEF(NULL, "undershoot-pct", 1,
                                                    "Datarate undershoot (min) target (%)");
static const arg_def_t overshoot_pct      = ARG_DEF(NULL, "overshoot-pct", 1,
                                                    "Datarate overshoot (max) target (%)");
static const arg_def_t buf_sz             = ARG_DEF(NULL, "buf-sz", 1,
                                                    "Client buffer size (ms)");
static const arg_def_t buf_initial_sz     = ARG_DEF(NULL, "buf-initial-sz", 1,
                                                    "Client initial buffer size (ms)");
static const arg_def_t buf_optimal_sz     = ARG_DEF(NULL, "buf-optimal-sz", 1,
                                                    "Client optimal buffer size (ms)");
static const arg_def_t *rc_args[] = {
  &dropframe_thresh, &resize_allowed, &resize_up_thresh, &resize_down_thresh,
  &end_usage, &target_bitrate, &min_quantizer, &max_quantizer,
  &undershoot_pct, &overshoot_pct, &buf_sz, &buf_initial_sz, &buf_optimal_sz,
  NULL
};


static const arg_def_t bias_pct = ARG_DEF(NULL, "bias-pct", 1,
                                          "CBR/VBR bias (0=CBR, 100=VBR)");
static const arg_def_t minsection_pct = ARG_DEF(NULL, "minsection-pct", 1,
                                                "GOP min bitrate (% of target)");
static const arg_def_t maxsection_pct = ARG_DEF(NULL, "maxsection-pct", 1,
                                                "GOP max bitrate (% of target)");
static const arg_def_t *rc_twopass_args[] = {
  &bias_pct, &minsection_pct, &maxsection_pct, NULL
};


static const arg_def_t kf_min_dist = ARG_DEF(NULL, "kf-min-dist", 1,
                                             "Minimum keyframe interval (frames)");
static const arg_def_t kf_max_dist = ARG_DEF(NULL, "kf-max-dist", 1,
                                             "Maximum keyframe interval (frames)");
static const arg_def_t kf_disabled = ARG_DEF(NULL, "disable-kf", 0,
                                             "Disable keyframe placement");
static const arg_def_t *kf_args[] = {
  &kf_min_dist, &kf_max_dist, &kf_disabled, NULL
};


#if CONFIG_VP8_ENCODER
static const arg_def_t noise_sens = ARG_DEF(NULL, "noise-sensitivity", 1,
                                            "Noise sensitivity (frames to blur)");
static const arg_def_t sharpness = ARG_DEF(NULL, "sharpness", 1,
                                           "Filter sharpness (0-7)");
static const arg_def_t static_thresh = ARG_DEF(NULL, "static-thresh", 1,
                                               "Motion detection threshold");
#endif

#if CONFIG_VP8_ENCODER
static const arg_def_t cpu_used = ARG_DEF(NULL, "cpu-used", 1,
                                          "CPU Used (-16..16)");
#endif


#if CONFIG_VP8_ENCODER
static const arg_def_t token_parts = ARG_DEF(NULL, "token-parts", 1,
                                             "Number of token partitions to use, log2");
static const arg_def_t auto_altref = ARG_DEF(NULL, "auto-alt-ref", 1,
                                             "Enable automatic alt reference frames");
static const arg_def_t arnr_maxframes = ARG_DEF(NULL, "arnr-maxframes", 1,
                                                "AltRef Max Frames");
static const arg_def_t arnr_strength = ARG_DEF(NULL, "arnr-strength", 1,
                                               "AltRef Strength");
static const arg_def_t arnr_type = ARG_DEF(NULL, "arnr-type", 1,
                                           "AltRef Type");
static const struct arg_enum_list tuning_enum[] = {
  {"psnr", VP8_TUNE_PSNR},
  {"ssim", VP8_TUNE_SSIM},
  {NULL, 0}
};
static const arg_def_t tune_ssim = ARG_DEF_ENUM(NULL, "tune", 1,
                                                "Material to favor", tuning_enum);
static const arg_def_t cq_level = ARG_DEF(NULL, "cq-level", 1,
                                          "Constrained Quality Level");
static const arg_def_t max_intra_rate_pct = ARG_DEF(NULL, "max-intra-rate", 1,
                                                    "Max I-frame bitrate (pct)");

static const arg_def_t *vp8_args[] = {
  &cpu_used, &auto_altref, &noise_sens, &sharpness, &static_thresh,
  &token_parts, &arnr_maxframes, &arnr_strength, &arnr_type,
  &tune_ssim, &cq_level, &max_intra_rate_pct, NULL
};
static const int vp8_arg_ctrl_map[] = {
  VP8E_SET_CPUUSED, VP8E_SET_ENABLEAUTOALTREF,
  VP8E_SET_NOISE_SENSITIVITY, VP8E_SET_SHARPNESS, VP8E_SET_STATIC_THRESHOLD,
  VP8E_SET_TOKEN_PARTITIONS,
  VP8E_SET_ARNR_MAXFRAMES, VP8E_SET_ARNR_STRENGTH, VP8E_SET_ARNR_TYPE,
  VP8E_SET_TUNING, VP8E_SET_CQ_LEVEL, VP8E_SET_MAX_INTRA_BITRATE_PCT, 0
};
#endif

static const arg_def_t *no_args[] = { NULL };

static void usage_exit() {
  int i;

  fprintf(stderr, "Usage: %s <options> -o dst_filename src_filename \n",
          exec_name);

  fprintf(stderr, "\nOptions:\n");
  arg_show_usage(stdout, main_args);
  fprintf(stderr, "\nEncoder Global Options:\n");
  arg_show_usage(stdout, global_args);
  fprintf(stderr, "\nRate Control Options:\n");
  arg_show_usage(stdout, rc_args);
  fprintf(stderr, "\nTwopass Rate Control Options:\n");
  arg_show_usage(stdout, rc_twopass_args);
  fprintf(stderr, "\nKeyframe Placement Options:\n");
  arg_show_usage(stdout, kf_args);
#if CONFIG_VP8_ENCODER
  fprintf(stderr, "\nVP8 Specific Options:\n");
  arg_show_usage(stdout, vp8_args);
#endif
  fprintf(stderr, "\nStream timebase (--timebase):\n"
          "  The desired precision of timestamps in the output, expressed\n"
          "  in fractional seconds. Default is 1/1000.\n");
  fprintf(stderr, "\n"
          "Included encoders:\n"
          "\n");

  for (i = 0; i < sizeof(codecs) / sizeof(codecs[0]); i++)
    fprintf(stderr, "    %-6s - %s\n",
            codecs[i].name,
            vpx_codec_iface_name(codecs[i].iface()));

  exit(EXIT_FAILURE);
}


#define HIST_BAR_MAX 40
struct hist_bucket {
  int low, high, count;
};


static int merge_hist_buckets(struct hist_bucket *bucket,
                              int *buckets_,
                              int max_buckets) {
  int small_bucket = 0, merge_bucket = INT_MAX, big_bucket = 0;
  int buckets = *buckets_;
  int i;

  /* Find the extrema for this list of buckets */
  big_bucket = small_bucket = 0;
  for (i = 0; i < buckets; i++) {
    if (bucket[i].count < bucket[small_bucket].count)
      small_bucket = i;
    if (bucket[i].count > bucket[big_bucket].count)
      big_bucket = i;
  }

  /* If we have too many buckets, merge the smallest with an adjacent
   * bucket.
   */
  while (buckets > max_buckets) {
    int last_bucket = buckets - 1;

    // merge the small bucket with an adjacent one.
    if (small_bucket == 0)
      merge_bucket = 1;
    else if (small_bucket == last_bucket)
      merge_bucket = last_bucket - 1;
    else if (bucket[small_bucket - 1].count < bucket[small_bucket + 1].count)
      merge_bucket = small_bucket - 1;
    else
      merge_bucket = small_bucket + 1;

    assert(abs(merge_bucket - small_bucket) <= 1);
    assert(small_bucket < buckets);
    assert(big_bucket < buckets);
    assert(merge_bucket < buckets);

    if (merge_bucket < small_bucket) {
      bucket[merge_bucket].high = bucket[small_bucket].high;
      bucket[merge_bucket].count += bucket[small_bucket].count;
    } else {
      bucket[small_bucket].high = bucket[merge_bucket].high;
      bucket[small_bucket].count += bucket[merge_bucket].count;
      merge_bucket = small_bucket;
    }

    assert(bucket[merge_bucket].low != bucket[merge_bucket].high);

    buckets--;

    /* Remove the merge_bucket from the list, and find the new small
     * and big buckets while we're at it
     */
    big_bucket = small_bucket = 0;
    for (i = 0; i < buckets; i++) {
      if (i > merge_bucket)
        bucket[i] = bucket[i + 1];

      if (bucket[i].count < bucket[small_bucket].count)
        small_bucket = i;
      if (bucket[i].count > bucket[big_bucket].count)
        big_bucket = i;
    }

  }

  *buckets_ = buckets;
  return bucket[big_bucket].count;
}


static void show_histogram(const struct hist_bucket *bucket,
                           int                       buckets,
                           int                       total,
                           int                       scale) {
  const char *pat1, *pat2;
  int i;

  switch ((int)(log(bucket[buckets - 1].high) / log(10)) + 1) {
    case 1:
    case 2:
      pat1 = "%4d %2s: ";
      pat2 = "%4d-%2d: ";
      break;
    case 3:
      pat1 = "%5d %3s: ";
      pat2 = "%5d-%3d: ";
      break;
    case 4:
      pat1 = "%6d %4s: ";
      pat2 = "%6d-%4d: ";
      break;
    case 5:
      pat1 = "%7d %5s: ";
      pat2 = "%7d-%5d: ";
      break;
    case 6:
      pat1 = "%8d %6s: ";
      pat2 = "%8d-%6d: ";
      break;
    case 7:
      pat1 = "%9d %7s: ";
      pat2 = "%9d-%7d: ";
      break;
    default:
      pat1 = "%12d %10s: ";
      pat2 = "%12d-%10d: ";
      break;
  }

  for (i = 0; i < buckets; i++) {
    int len;
    int j;
    float pct;

    pct = 100.0 * (float)bucket[i].count / (float)total;
    len = HIST_BAR_MAX * bucket[i].count / scale;
    if (len < 1)
      len = 1;
    assert(len <= HIST_BAR_MAX);

    if (bucket[i].low == bucket[i].high)
      fprintf(stderr, pat1, bucket[i].low, "");
    else
      fprintf(stderr, pat2, bucket[i].low, bucket[i].high);

    for (j = 0; j < HIST_BAR_MAX; j++)
      fprintf(stderr, j < len ? "=" : " ");
    fprintf(stderr, "\t%5d (%6.2f%%)\n", bucket[i].count, pct);
  }
}


static void show_q_histogram(const int counts[64], int max_buckets) {
  struct hist_bucket bucket[64];
  int buckets = 0;
  int total = 0;
  int scale;
  int i;


  for (i = 0; i < 64; i++) {
    if (counts[i]) {
      bucket[buckets].low = bucket[buckets].high = i;
      bucket[buckets].count = counts[i];
      buckets++;
      total += counts[i];
    }
  }

  fprintf(stderr, "\nQuantizer Selection:\n");
  scale = merge_hist_buckets(bucket, &buckets, max_buckets);
  show_histogram(bucket, buckets, total, scale);
}


#define RATE_BINS (100)
struct rate_hist {
  int64_t            *pts;
  int                *sz;
  int                 samples;
  int                 frames;
  struct hist_bucket  bucket[RATE_BINS];
  int                 total;
};


static void init_rate_histogram(struct rate_hist          *hist,
                                const vpx_codec_enc_cfg_t *cfg,
                                const vpx_rational_t      *fps) {
  int i;

  /* Determine the number of samples in the buffer. Use the file's framerate
   * to determine the number of frames in rc_buf_sz milliseconds, with an
   * adjustment (5/4) to account for alt-refs
   */
  hist->samples = cfg->rc_buf_sz * 5 / 4 * fps->num / fps->den / 1000;

  // prevent division by zero
  if (hist->samples == 0)
    hist->samples = 1;

  hist->pts = calloc(hist->samples, sizeof(*hist->pts));
  hist->sz = calloc(hist->samples, sizeof(*hist->sz));
  for (i = 0; i < RATE_BINS; i++) {
    hist->bucket[i].low = INT_MAX;
    hist->bucket[i].high = 0;
    hist->bucket[i].count = 0;
  }
}


static void destroy_rate_histogram(struct rate_hist *hist) {
  free(hist->pts);
  free(hist->sz);
}


static void update_rate_histogram(struct rate_hist          *hist,
                                  const vpx_codec_enc_cfg_t *cfg,
                                  const vpx_codec_cx_pkt_t  *pkt) {
  int i, idx;
  int64_t now, then, sum_sz = 0, avg_bitrate;

  now = pkt->data.frame.pts * 1000
        * (uint64_t)cfg->g_timebase.num / (uint64_t)cfg->g_timebase.den;

  idx = hist->frames++ % hist->samples;
  hist->pts[idx] = now;
  hist->sz[idx] = pkt->data.frame.sz;

  if (now < cfg->rc_buf_initial_sz)
    return;

  then = now;

  /* Sum the size over the past rc_buf_sz ms */
  for (i = hist->frames; i > 0 && hist->frames - i < hist->samples; i--) {
    int i_idx = (i - 1) % hist->samples;

    then = hist->pts[i_idx];
    if (now - then > cfg->rc_buf_sz)
      break;
    sum_sz += hist->sz[i_idx];
  }

  if (now == then)
    return;

  avg_bitrate = sum_sz * 8 * 1000 / (now - then);
  idx = avg_bitrate * (RATE_BINS / 2) / (cfg->rc_target_bitrate * 1000);
  if (idx < 0)
    idx = 0;
  if (idx > RATE_BINS - 1)
    idx = RATE_BINS - 1;
  if (hist->bucket[idx].low > avg_bitrate)
    hist->bucket[idx].low = avg_bitrate;
  if (hist->bucket[idx].high < avg_bitrate)
    hist->bucket[idx].high = avg_bitrate;
  hist->bucket[idx].count++;
  hist->total++;
}


static void show_rate_histogram(struct rate_hist          *hist,
                                const vpx_codec_enc_cfg_t *cfg,
                                int                        max_buckets) {
  int i, scale;
  int buckets = 0;

  for (i = 0; i < RATE_BINS; i++) {
    if (hist->bucket[i].low == INT_MAX)
      continue;
    hist->bucket[buckets++] = hist->bucket[i];
  }

  fprintf(stderr, "\nRate (over %dms window):\n", cfg->rc_buf_sz);
  scale = merge_hist_buckets(hist->bucket, &buckets, max_buckets);
  show_histogram(hist->bucket, buckets, hist->total, scale);
}


static int compare_img(vpx_image_t *img1, vpx_image_t *img2) {
  int match = 1;
  int i;

  match &= (img1->fmt == img2->fmt);
  match &= (img1->w == img2->w);
  match &= (img1->h == img2->h);

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

  for (i = 0; i < img1->d_h / 2; i++)
    match &= (memcmp(img1->planes[VPX_PLANE_U] + i * img1->stride[VPX_PLANE_U],
                     img2->planes[VPX_PLANE_U] + i * img2->stride[VPX_PLANE_U],
                     img1->d_w / 2) == 0);

  for (i = 0; i < img1->d_h / 2; i++)
    match &= (memcmp(img1->planes[VPX_PLANE_V] + i * img1->stride[VPX_PLANE_U],
                     img2->planes[VPX_PLANE_V] + i * img2->stride[VPX_PLANE_U],
                     img1->d_w / 2) == 0);

  return match;
}


#define ARG_CTRL_CNT_MAX 10

int main(int argc, const char **argv_) {
  vpx_codec_ctx_t        encoder;
  const char            *in_fn = NULL, *out_fn = NULL, *stats_fn = NULL;
  int                    i;
  FILE                  *infile, *outfile;
  vpx_codec_enc_cfg_t    cfg;
  vpx_codec_err_t        res;
  int                    pass, one_pass_only = 0;
  stats_io_t             stats;
  vpx_image_t            raw;
  const struct codec_item  *codec = codecs;
  int                    frame_avail, got_data;

  struct arg               arg;
  char                   **argv, **argi, **argj;
  int                      arg_usage = 0, arg_passes = 1, arg_deadline = 0;
  int                      arg_ctrls[ARG_CTRL_CNT_MAX][2], arg_ctrl_cnt = 0;
  int                      arg_limit = 0;
  int                      arg_skip  = 0;
  static const arg_def_t **ctrl_args = no_args;
  static const int        *ctrl_args_map = NULL;
  int                      verbose = 0, show_psnr = 0, test_decode = 0;
  int                      arg_use_i420 = 1;
  unsigned long            cx_time = 0;
  unsigned int             file_type, fourcc;
  y4m_input                y4m;
  struct vpx_rational      arg_framerate = {30, 1};
  int                      arg_have_framerate = 0;
  int                      write_webm = 1;
  EbmlGlobal               ebml = {0};
  uint32_t                 hash = 0;
  uint64_t                 psnr_sse_total = 0;
  uint64_t                 psnr_samples_total = 0;
  double                   psnr_totals[4] = {0, 0, 0, 0};
  int                      psnr_count = 0;
  stereo_format_t          stereo_fmt = STEREO_FORMAT_MONO;
  int                      counts[64] = {0};
  int                      show_q_hist_buckets = 0;
  int                      show_rate_hist_buckets = 0;
  struct rate_hist         rate_hist = {0};

  vpx_codec_ctx_t          decoder;
  vpx_ref_frame_t          ref_enc;
  vpx_ref_frame_t          ref_dec;
  vpx_codec_dec_cfg_t      dec_cfg = {0};
  int                      enc_dec_match = 1;
  int                      first_bad_frame = -1;
  int                      test_decode_frame = 0;

  exec_name = argv_[0];
  ebml.last_pts_ms = -1;

  if (argc < 3)
    usage_exit();


  /* First parse the codec and usage values, because we want to apply other
   * parameters on top of the default configuration provided by the codec.
   */
  argv = argv_dup(argc - 1, argv_ + 1);

  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
    arg.argv_step = 1;

    if (arg_match(&arg, &codecarg, argi)) {
      int j, k = -1;

      for (j = 0; j < sizeof(codecs) / sizeof(codecs[0]); j++)
        if (!strcmp(codecs[j].name, arg.val))
          k = j;

      if (k >= 0)
        codec = codecs + k;
      else
        die("Error: Unrecognized argument (%s) to --codec\n",
            arg.val);

    } else if (arg_match(&arg, &passes, argi)) {
      arg_passes = arg_parse_uint(&arg);

      if (arg_passes < 1 || arg_passes > 2)
        die("Error: Invalid number of passes (%d)\n", arg_passes);
    } else if (arg_match(&arg, &pass_arg, argi)) {
      one_pass_only = arg_parse_uint(&arg);

      if (one_pass_only < 1 || one_pass_only > 2)
        die("Error: Invalid pass selected (%d)\n", one_pass_only);
    } else if (arg_match(&arg, &fpf_name, argi))
      stats_fn = arg.val;
    else if (arg_match(&arg, &usage, argi))
      arg_usage = arg_parse_uint(&arg);
    else if (arg_match(&arg, &deadline, argi))
      arg_deadline = arg_parse_uint(&arg);
    else if (arg_match(&arg, &best_dl, argi))
      arg_deadline = VPX_DL_BEST_QUALITY;
    else if (arg_match(&arg, &good_dl, argi))
      arg_deadline = VPX_DL_GOOD_QUALITY;
    else if (arg_match(&arg, &rt_dl, argi))
      arg_deadline = VPX_DL_REALTIME;
    else if (arg_match(&arg, &use_yv12, argi)) {
      arg_use_i420 = 0;
    } else if (arg_match(&arg, &use_i420, argi)) {
      arg_use_i420 = 1;
    } else if (arg_match(&arg, &verbosearg, argi))
      verbose = 1;
    else if (arg_match(&arg, &limit, argi))
      arg_limit = arg_parse_uint(&arg);
    else if (arg_match(&arg, &skip, argi))
      arg_skip = arg_parse_uint(&arg);
    else if (arg_match(&arg, &psnrarg, argi))
      show_psnr = 1;
    else if (arg_match(&arg, &recontest, argi))
      test_decode = 1;
    else if (arg_match(&arg, &framerate, argi)) {
      arg_framerate = arg_parse_rational(&arg);
      arg_have_framerate = 1;
    } else if (arg_match(&arg, &use_ivf, argi))
      write_webm = 0;
    else if (arg_match(&arg, &outputfile, argi))
      out_fn = arg.val;
    else if (arg_match(&arg, &debugmode, argi))
      ebml.debug = 1;
    else if (arg_match(&arg, &q_hist_n, argi))
      show_q_hist_buckets = arg_parse_uint(&arg);
    else if (arg_match(&arg, &rate_hist_n, argi))
      show_rate_hist_buckets = arg_parse_uint(&arg);
    else
      argj++;
  }

  /* Ensure that --passes and --pass are consistent. If --pass is set and --passes=2,
   * ensure --fpf was set.
   */
  if (one_pass_only) {
    /* DWIM: Assume the user meant passes=2 if pass=2 is specified */
    if (one_pass_only > arg_passes) {
      fprintf(stderr, "Warning: Assuming --pass=%d implies --passes=%d\n",
              one_pass_only, one_pass_only);
      arg_passes = one_pass_only;
    }

    if (arg_passes == 2 && !stats_fn)
      die("Must specify --fpf when --pass=%d and --passes=2\n", one_pass_only);
  }

  /* Populate encoder configuration */
  res = vpx_codec_enc_config_default(codec->iface(), &cfg, arg_usage);

  if (res) {
    fprintf(stderr, "Failed to get config: %s\n",
            vpx_codec_err_to_string(res));
    return EXIT_FAILURE;
  }

  /* Change the default timebase to a high enough value so that the encoder
   * will always create strictly increasing timestamps.
   */
  cfg.g_timebase.den = 1000;

  /* Never use the library's default resolution, require it be parsed
   * from the file or set on the command line.
   */
  cfg.g_w = 0;
  cfg.g_h = 0;

#if CONFIG_LOSSLESS
  cfg.lossless = 0;
#endif

  /* Now parse the remainder of the parameters. */
  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
    arg.argv_step = 1;

    if (0);
    else if (arg_match(&arg, &threads, argi))
      cfg.g_threads = arg_parse_uint(&arg);
    else if (arg_match(&arg, &profile, argi))
      cfg.g_profile = arg_parse_uint(&arg);
    else if (arg_match(&arg, &width, argi))
      cfg.g_w = arg_parse_uint(&arg);
    else if (arg_match(&arg, &height, argi))
      cfg.g_h = arg_parse_uint(&arg);
    else if (arg_match(&arg, &stereo_mode, argi))
      stereo_fmt = arg_parse_enum_or_int(&arg);
    else if (arg_match(&arg, &timebase, argi))
      cfg.g_timebase = arg_parse_rational(&arg);
    else if (arg_match(&arg, &error_resilient, argi))
      cfg.g_error_resilient = arg_parse_uint(&arg);
    else if (arg_match(&arg, &lag_in_frames, argi))
      cfg.g_lag_in_frames = arg_parse_uint(&arg);
    else if (arg_match(&arg, &dropframe_thresh, argi))
      cfg.rc_dropframe_thresh = arg_parse_uint(&arg);
    else if (arg_match(&arg, &resize_allowed, argi))
      cfg.rc_resize_allowed = arg_parse_uint(&arg);
    else if (arg_match(&arg, &resize_up_thresh, argi))
      cfg.rc_resize_up_thresh = arg_parse_uint(&arg);
    else if (arg_match(&arg, &resize_down_thresh, argi))
      cfg.rc_resize_down_thresh = arg_parse_uint(&arg);
    else if (arg_match(&arg, &resize_down_thresh, argi))
      cfg.rc_resize_down_thresh = arg_parse_uint(&arg);
    else if (arg_match(&arg, &end_usage, argi))
      cfg.rc_end_usage = arg_parse_enum_or_int(&arg);
    else if (arg_match(&arg, &target_bitrate, argi))
      cfg.rc_target_bitrate = arg_parse_uint(&arg);
    else if (arg_match(&arg, &min_quantizer, argi))
      cfg.rc_min_quantizer = arg_parse_uint(&arg);
    else if (arg_match(&arg, &max_quantizer, argi))
      cfg.rc_max_quantizer = arg_parse_uint(&arg);
    else if (arg_match(&arg, &undershoot_pct, argi))
      cfg.rc_undershoot_pct = arg_parse_uint(&arg);
    else if (arg_match(&arg, &overshoot_pct, argi))
      cfg.rc_overshoot_pct = arg_parse_uint(&arg);
    else if (arg_match(&arg, &buf_sz, argi))
      cfg.rc_buf_sz = arg_parse_uint(&arg);
    else if (arg_match(&arg, &buf_initial_sz, argi))
      cfg.rc_buf_initial_sz = arg_parse_uint(&arg);
    else if (arg_match(&arg, &buf_optimal_sz, argi))
      cfg.rc_buf_optimal_sz = arg_parse_uint(&arg);
    else if (arg_match(&arg, &bias_pct, argi)) {
      cfg.rc_2pass_vbr_bias_pct = arg_parse_uint(&arg);

      if (arg_passes < 2)
        fprintf(stderr,
                "Warning: option %s ignored in one-pass mode.\n",
                arg.name);
    } else if (arg_match(&arg, &minsection_pct, argi)) {
      cfg.rc_2pass_vbr_minsection_pct = arg_parse_uint(&arg);

      if (arg_passes < 2)
        fprintf(stderr,
                "Warning: option %s ignored in one-pass mode.\n",
                arg.name);
    } else if (arg_match(&arg, &maxsection_pct, argi)) {
      cfg.rc_2pass_vbr_maxsection_pct = arg_parse_uint(&arg);

      if (arg_passes < 2)
        fprintf(stderr,
                "Warning: option %s ignored in one-pass mode.\n",
                arg.name);
    } else if (arg_match(&arg, &kf_min_dist, argi))
      cfg.kf_min_dist = arg_parse_uint(&arg);
    else if (arg_match(&arg, &kf_max_dist, argi))
      cfg.kf_max_dist = arg_parse_uint(&arg);
    else if (arg_match(&arg, &kf_disabled, argi))
      cfg.kf_mode = VPX_KF_DISABLED;
#if CONFIG_LOSSLESS
    else if (arg_match(&arg, &lossless_enabled, argi))
      cfg.lossless = 1;
#endif
    else
      argj++;
  }

#if CONFIG_LOSSLESS
  if (cfg.lossless) {
    cfg.rc_min_quantizer = 0;
    cfg.rc_max_quantizer = 0;
  }
#endif

  /* Handle codec specific options */
#if CONFIG_VP8_ENCODER

  if (codec->fourcc == VP8_FOURCC) {
    ctrl_args = vp8_args;
    ctrl_args_map = vp8_arg_ctrl_map;
  }

#endif

  for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
    int match = 0;

    arg.argv_step = 1;

    for (i = 0; ctrl_args[i]; i++) {
      if (arg_match(&arg, ctrl_args[i], argi)) {
        match = 1;

        if (arg_ctrl_cnt < ARG_CTRL_CNT_MAX) {
          arg_ctrls[arg_ctrl_cnt][0] = ctrl_args_map[i];
          arg_ctrls[arg_ctrl_cnt][1] = arg_parse_enum_or_int(&arg);
          arg_ctrl_cnt++;
        }
      }
    }

    if (!match)
      argj++;
  }

  /* Check for unrecognized options */
  for (argi = argv; *argi; argi++)
    if (argi[0][0] == '-' && argi[0][1])
      die("Error: Unrecognized option %s\n", *argi);

  /* Handle non-option arguments */
  in_fn = argv[0];

  if (!in_fn)
    usage_exit();

  if (!out_fn)
    die("Error: Output file is required (specify with -o)\n");

  memset(&stats, 0, sizeof(stats));

  for (pass = one_pass_only ? one_pass_only - 1 : 0; pass < arg_passes; pass++) {
    int frames_in = 0, frames_out = 0;
    unsigned long nbytes = 0;
    int skip_frames = 0;
    struct detect_buffer detect;

    /* Parse certain options from the input file, if possible */
    infile = strcmp(in_fn, "-") ? fopen(in_fn, "rb")
             : set_binary_mode(stdin);

    if (!infile) {
      fprintf(stderr, "Failed to open input file\n");
      return EXIT_FAILURE;
    }

    /* For RAW input sources, these bytes will applied on the first frame
     *  in read_frame().
     */
    detect.buf_read = fread(detect.buf, 1, 4, infile);
    detect.position = 0;

    if (detect.buf_read == 4 && file_is_y4m(infile, &y4m, detect.buf)) {
      if (y4m_input_open(&y4m, infile, detect.buf, 4) >= 0) {
        file_type = FILE_TYPE_Y4M;
        cfg.g_w = y4m.pic_w;
        cfg.g_h = y4m.pic_h;

        /* Use the frame rate from the file only if none was specified
         * on the command-line.
         */
        if (!arg_have_framerate) {
          arg_framerate.num = y4m.fps_n;
          arg_framerate.den = y4m.fps_d;
        }

        arg_use_i420 = 0;
      } else {
        fprintf(stderr, "Unsupported Y4M stream.\n");
        return EXIT_FAILURE;
      }
    } else if (detect.buf_read == 4 &&
               file_is_ivf(infile, &fourcc, &cfg.g_w, &cfg.g_h, &detect)) {
      file_type = FILE_TYPE_IVF;
      switch (fourcc) {
        case 0x32315659:
          arg_use_i420 = 0;
          break;
        case 0x30323449:
          arg_use_i420 = 1;
          break;
        default:
          fprintf(stderr, "Unsupported fourcc (%08x) in IVF\n", fourcc);
          return EXIT_FAILURE;
      }
    } else {
      file_type = FILE_TYPE_RAW;
    }

    if (!cfg.g_w || !cfg.g_h) {
      fprintf(stderr, "Specify stream dimensions with --width (-w) "
              " and --height (-h).\n");
      return EXIT_FAILURE;
    }

#define SHOW(field) fprintf(stderr, "    %-28s = %d\n", #field, cfg.field)

    if (verbose && pass == 0) {
      fprintf(stderr, "Codec: %s\n", vpx_codec_iface_name(codec->iface()));
      fprintf(stderr, "Source file: %s Format: %s\n", in_fn,
              arg_use_i420 ? "I420" : "YV12");
      fprintf(stderr, "Destination file: %s\n", out_fn);
      fprintf(stderr, "Encoder parameters:\n");

      SHOW(g_usage);
      SHOW(g_threads);
      SHOW(g_profile);
      SHOW(g_w);
      SHOW(g_h);
      SHOW(g_timebase.num);
      SHOW(g_timebase.den);
      SHOW(g_error_resilient);
      SHOW(g_pass);
      SHOW(g_lag_in_frames);
      SHOW(rc_dropframe_thresh);
      SHOW(rc_resize_allowed);
      SHOW(rc_resize_up_thresh);
      SHOW(rc_resize_down_thresh);
      SHOW(rc_end_usage);
      SHOW(rc_target_bitrate);
      SHOW(rc_min_quantizer);
      SHOW(rc_max_quantizer);
      SHOW(rc_undershoot_pct);
      SHOW(rc_overshoot_pct);
      SHOW(rc_buf_sz);
      SHOW(rc_buf_initial_sz);
      SHOW(rc_buf_optimal_sz);
      SHOW(rc_2pass_vbr_bias_pct);
      SHOW(rc_2pass_vbr_minsection_pct);
      SHOW(rc_2pass_vbr_maxsection_pct);
      SHOW(kf_mode);
      SHOW(kf_min_dist);
      SHOW(kf_max_dist);
#if CONFIG_LOSSLESS
      SHOW(lossless);
#endif
    }

    if (pass == (one_pass_only ? one_pass_only - 1 : 0)) {
      if (file_type == FILE_TYPE_Y4M)
        /*The Y4M reader does its own allocation.
          Just initialize this here to avoid problems if we never read any
           frames.*/
        memset(&raw, 0, sizeof(raw));
      else
        vpx_img_alloc(&raw, arg_use_i420 ? VPX_IMG_FMT_I420 : VPX_IMG_FMT_YV12,
                      cfg.g_w, cfg.g_h, 1);


      init_rate_histogram(&rate_hist, &cfg, &arg_framerate);
    }

    if (test_decode) {
      int width = cfg.g_w;
      int height = cfg.g_h;
      width = (width + 15)& ~15;
      height = (height + 15) & ~15;

      vpx_img_alloc(&ref_enc.img, VPX_IMG_FMT_I420,
                    width, height, 1);
      vpx_img_alloc(&ref_dec.img, VPX_IMG_FMT_I420,
                    width, height, 1);
    }

    outfile = strcmp(out_fn, "-") ? fopen(out_fn, "wb")
              : set_binary_mode(stdout);

    if (!outfile) {
      fprintf(stderr, "Failed to open output file\n");
      return EXIT_FAILURE;
    }

    if (write_webm && fseek(outfile, 0, SEEK_CUR)) {
      fprintf(stderr, "WebM output to pipes not supported.\n");
      return EXIT_FAILURE;
    }

    if (stats_fn) {
      if (!stats_open_file(&stats, stats_fn, pass)) {
        fprintf(stderr, "Failed to open statistics store\n");
        return EXIT_FAILURE;
      }
    } else {
      if (!stats_open_mem(&stats, pass)) {
        fprintf(stderr, "Failed to open statistics store\n");
        return EXIT_FAILURE;
      }
    }

    cfg.g_pass = arg_passes == 2
                 ? pass ? VPX_RC_LAST_PASS : VPX_RC_FIRST_PASS
               : VPX_RC_ONE_PASS;
#if VPX_ENCODER_ABI_VERSION > (1 + VPX_CODEC_ABI_VERSION)

    if (pass) {
      cfg.rc_twopass_stats_in = stats_get(&stats);
    }

#endif

    if (write_webm) {
      ebml.stream = outfile;
      write_webm_file_header(&ebml, &cfg, &arg_framerate, stereo_fmt);
    } else
      write_ivf_file_header(outfile, &cfg, codec->fourcc, 0);


    /* Construct Encoder Context */
    vpx_codec_enc_init(&encoder, codec->iface(), &cfg,
                       show_psnr ? VPX_CODEC_USE_PSNR : 0);
    ctx_exit_on_error(&encoder, "Failed to initialize encoder");

    if (test_decode &&
        vpx_codec_dec_init(&decoder, ifaces[0].iface(), &dec_cfg, 0)) {
      fprintf(stderr,
              "Failed to initialize decoder: %s\n",
              vpx_codec_error(&decoder));
      return EXIT_FAILURE;
    }
    /* Note that we bypass the vpx_codec_control wrapper macro because
     * we're being clever to store the control IDs in an array. Real
     * applications will want to make use of the enumerations directly
     */
    for (i = 0; i < arg_ctrl_cnt; i++) {
      if (vpx_codec_control_(&encoder, arg_ctrls[i][0], arg_ctrls[i][1]))
        fprintf(stderr, "Error: Tried to set control %d = %d\n",
                arg_ctrls[i][0], arg_ctrls[i][1]);
      ctx_exit_on_error(&encoder, "Failed to control codec");
    }

    frame_avail = 1;
    got_data = 0;

    skip_frames = arg_skip;
    while (skip_frames) {
      frame_avail = read_frame(infile, &raw, file_type, &y4m, &detect);
      if (!frame_avail)
        break;
      skip_frames--;
      fprintf(stderr,
              "\rPass %d/%d frame %4d/%-4d %7ldB \033[K", pass + 1,
              arg_passes, skip_frames, frames_out, nbytes);
    }

    while (frame_avail || got_data) {
      vpx_codec_iter_t iter = NULL;
      vpx_codec_iter_t dec_iter = NULL;
      const vpx_codec_cx_pkt_t *pkt;
      struct vpx_usec_timer timer;
      int64_t frame_start, next_frame_start;

      if (!arg_limit || frames_in < arg_limit) {
        frame_avail = read_frame(infile, &raw, file_type, &y4m,
                                 &detect);
        if (frame_avail)
          frames_in++;
      } else
        frame_avail = 0;

      vpx_usec_timer_start(&timer);

      frame_start = (cfg.g_timebase.den * (int64_t)(frames_in - 1)
                     * arg_framerate.den) / cfg.g_timebase.num / arg_framerate.num;
      next_frame_start = (cfg.g_timebase.den * (int64_t)(frames_in)
                          * arg_framerate.den)
                         / cfg.g_timebase.num / arg_framerate.num;
      vpx_codec_encode(&encoder, frame_avail ? &raw : NULL, frame_start,
                       next_frame_start - frame_start,
                       0, arg_deadline);
      vpx_usec_timer_mark(&timer);
      cx_time += vpx_usec_timer_elapsed(&timer);
      ctx_exit_on_error(&encoder, "Failed to encode frame");

      if (cfg.g_pass != VPX_RC_FIRST_PASS) {
        int q;

        vpx_codec_control(&encoder, VP8E_GET_LAST_QUANTIZER_64, &q);
        ctx_exit_on_error(&encoder, "Failed to read quantizer");
        counts[q]++;
      }

      got_data = 0;
      test_decode_frame = 0;
      while ((pkt = vpx_codec_get_cx_data(&encoder, &iter))) {
        got_data = 1;

        switch (pkt->kind) {
          case VPX_CODEC_CX_FRAME_PKT:
            fprintf(stderr,
                    "\rPass %d/%d frame %4d/%-4d %7ldB \033[K", pass + 1,
                    arg_passes, frames_in, frames_out, nbytes);
            frames_out++;
            fprintf(stderr, " %6luF",
                    (unsigned long)pkt->data.frame.sz);

            if (test_decode) {
              if (!vpx_codec_decode(&decoder,
                                    pkt->data.frame.buf,
                                    pkt->data.frame.sz,
                                    NULL, 0)) {
                vpx_codec_get_frame(&decoder, &dec_iter);
                test_decode_frame = 1;
              } else {
                const char *detail = vpx_codec_error_detail(&decoder);
                fprintf(stderr, "Failed to decode frame: %s\n",
                        vpx_codec_error(&decoder));
                if (detail)
                  fprintf(stderr,
                          "  Additional information: %s\n",
                          detail);
              }
            }

            update_rate_histogram(&rate_hist, &cfg, pkt);
            if (write_webm) {
              /* Update the hash */
              if (!ebml.debug)
                hash = murmur(pkt->data.frame.buf,
                              pkt->data.frame.sz, hash);

              write_webm_block(&ebml, &cfg, pkt);
            } else {
              write_ivf_frame_header(outfile, pkt);
              if (fwrite(pkt->data.frame.buf, 1,
                         pkt->data.frame.sz, outfile));
            }
            nbytes += pkt->data.raw.sz;
            break;
          case VPX_CODEC_STATS_PKT:
            fprintf(stderr,
                    "\rPass %d/%d frame %4d/%-4d %7ldB \033[K", pass + 1,
                    arg_passes, frames_in, frames_out, nbytes);
            frames_out++;
            fprintf(stderr, " %6luS",
                    (unsigned long)pkt->data.twopass_stats.sz);
            stats_write(&stats,
                        pkt->data.twopass_stats.buf,
                        pkt->data.twopass_stats.sz);
            nbytes += pkt->data.raw.sz;
            break;
          case VPX_CODEC_PSNR_PKT:

            if (show_psnr) {
              int i;

              psnr_sse_total += pkt->data.psnr.sse[0];
              psnr_samples_total += pkt->data.psnr.samples[0];
              for (i = 0; i < 4; i++) {
                fprintf(stderr, "%.3lf ", pkt->data.psnr.psnr[i]);
                psnr_totals[i] += pkt->data.psnr.psnr[i];
              }
              psnr_count++;
            }

            break;
          default:
            break;
        }
      }
      if (test_decode && test_decode_frame) {
        ref_enc.frame_type = VP8_LAST_FRAME;
        ref_dec.frame_type = VP8_LAST_FRAME;

        vpx_codec_control(&encoder,
                          VP8_COPY_REFERENCE,
                          &ref_enc);
        vpx_codec_control(&decoder,
                          VP8_COPY_REFERENCE,
                          &ref_dec);

        enc_dec_match &= compare_img(&ref_enc.img,
                                     &ref_dec.img);
        if (!enc_dec_match && first_bad_frame < 0) {
          first_bad_frame = frames_out - 1;
        }
      }

      fflush(stdout);
    }

    fprintf(stderr,
            "\rPass %d/%d frame %4d/%-4d %7ldB %7ldb/f %7"PRId64"b/s"
            " %7lu %s (%.2f fps)\033[K", pass + 1,
            arg_passes, frames_in, frames_out, nbytes, nbytes * 8 / frames_in,
            nbytes * 8 * (int64_t)arg_framerate.num / arg_framerate.den / frames_in,
            cx_time > 9999999 ? cx_time / 1000 : cx_time,
            cx_time > 9999999 ? "ms" : "us",
            (float)frames_in * 1000000.0 / (float)cx_time);

    if ((show_psnr) && (psnr_count > 0)) {
      int i;
      double ovpsnr = vp8_mse2psnr(psnr_samples_total, 255.0,
                                   psnr_sse_total);

      fprintf(stderr, "\nPSNR (Overall/Avg/Y/U/V)");

      fprintf(stderr, " %.3lf", ovpsnr);
      for (i = 0; i < 4; i++) {
        fprintf(stderr, " %.3lf", psnr_totals[i] / psnr_count);
      }
    }

    vpx_codec_destroy(&encoder);

    if (test_decode)
      vpx_codec_destroy(&decoder);

    fclose(infile);
    if (file_type == FILE_TYPE_Y4M)
      y4m_input_close(&y4m);

    if (write_webm) {
      write_webm_file_footer(&ebml, hash);
      free(ebml.cue_list);
      ebml.cue_list = NULL;
    } else {
      if (!fseek(outfile, 0, SEEK_SET))
        write_ivf_file_header(outfile, &cfg, codec->fourcc, frames_out);
    }

    fclose(outfile);
    stats_close(&stats, arg_passes - 1);
    fprintf(stderr, "\n");

    if (one_pass_only)
      break;
  }

  if (test_decode) {
#if CONFIG_INTERNAL_STATS
    FILE *f = fopen("opsnr.stt", "a");
#endif
    fprintf(stderr, "\n");
    if (enc_dec_match) {
      fprintf(stderr, "No mismatch detected in recon buffers\n");
#if CONFIG_INTERNAL_STATS
      fprintf(f, "No mismatch detected in recon buffers\n");
#endif
    } else {
      fprintf(stderr, "First mismatch occurred in frame %d\n",
              first_bad_frame);
#if CONFIG_INTERNAL_STATS
      fprintf(f, "First mismatch occurred in frame %d\n",
              first_bad_frame);
#endif
    }
#if CONFIG_INTERNAL_STATS
    fclose(f);
#endif
  }

  if (show_q_hist_buckets)
    show_q_histogram(counts, show_q_hist_buckets);

  if (show_rate_hist_buckets)
    show_rate_histogram(&rate_hist, &cfg, show_rate_hist_buckets);
  destroy_rate_histogram(&rate_hist);

  vpx_img_free(&raw);
  if (test_decode) {
    vpx_img_free(&ref_enc.img);
    vpx_img_free(&ref_dec.img);
  }
  free(argv);
  return EXIT_SUCCESS;
}