Changing webmenc to use libwebm

Changing webmenc to use libwebm for WebM file muxing.

Change-Id: I42eb688953865003214c05bdf2076ee00db28970

1 files changed, 0 insertions, 331 deletions

diff --git a/webmenc.c b/webmenc.c
deleted file mode 100644
index 17bbeec78..000000000
--- a/webmenc.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- *  Copyright (c) 2013 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 "webmenc.h"
-
-#include <limits.h>
-#include <string.h>
-
-#include "third_party/libmkv/EbmlWriter.h"
-#include "third_party/libmkv/EbmlIDs.h"
-
-void Ebml_Write(struct EbmlGlobal *glob,
-                const void *buffer_in,
-                unsigned long len) {
-  (void) fwrite(buffer_in, 1, len, glob->stream);
-}
-
-#define WRITE_BUFFER(s) \
-for (i = len - 1; i >= 0; i--) { \
-  x = (char)(*(const s *)buffer_in >> (i * CHAR_BIT)); \
-  Ebml_Write(glob, &x, 1); \
-}
-
-void Ebml_Serialize(struct 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(struct EbmlGlobal *glob,
-                                     unsigned int class_id,
-                                     uint64_t ui) {
-  const 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(struct EbmlGlobal *glob,
-                                 EbmlLoc *ebmlLoc,
-                                 unsigned int class_id) {
-  const uint64_t kEbmlUnknownLength = LITERALU64(0x01FFFFFF, 0xFFFFFFFF);
-  Ebml_WriteID(glob, class_id);
-  *ebmlLoc = ftello(glob->stream);
-  Ebml_Serialize(glob, &kEbmlUnknownLength, sizeof(kEbmlUnknownLength), 8);
-}
-
-static void Ebml_EndSubElement(struct 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(0x01000000, 0x00000000);
-
-  /* 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);
-}
-
-void write_webm_seek_element(struct EbmlGlobal *ebml,
-                             unsigned int 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);
-}
-
-void write_webm_seek_info(struct EbmlGlobal *ebml) {
-  off_t pos;
-  EbmlLoc start;
-  EbmlLoc startInfo;
-  uint64_t frame_time;
-  char version_string[64];
-
-  /* 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;
-
-  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);
-
-  /* Create and write the Segment Info. */
-  if (ebml->debug) {
-    strcpy(version_string, "vpxenc");
-  } else {
-    strcpy(version_string, "vpxenc ");
-    strncat(version_string,
-            vpx_codec_version_str(),
-            sizeof(version_string) - 1 - strlen(version_string));
-  }
-
-  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,
-                      (double)(ebml->last_pts_ms + frame_time));
-  Ebml_SerializeString(ebml, 0x4D80, version_string);
-  Ebml_SerializeString(ebml, 0x5741, version_string);
-  Ebml_EndSubElement(ebml, &startInfo);
-}
-
-void write_webm_file_header(struct EbmlGlobal *glob,
-                            const vpx_codec_enc_cfg_t *cfg,
-                            const struct vpx_rational *fps,
-                            stereo_format_t stereo_fmt,
-                            unsigned int fourcc) {
-  EbmlLoc start;
-  EbmlLoc trackStart;
-  EbmlLoc videoStart;
-  unsigned int trackNumber = 1;
-  uint64_t trackID = 0;
-  unsigned int pixelWidth = cfg->g_w;
-  unsigned int pixelHeight = cfg->g_h;
-
-  /* Write the EBML header. */
-  Ebml_StartSubElement(glob, &start, EBML);
-  Ebml_SerializeUnsigned(glob, EBMLVersion, 1);
-  Ebml_SerializeUnsigned(glob, EBMLReadVersion, 1);
-  Ebml_SerializeUnsigned(glob, EBMLMaxIDLength, 4);
-  Ebml_SerializeUnsigned(glob, EBMLMaxSizeLength, 8);
-  Ebml_SerializeString(glob, DocType, "webm");
-  Ebml_SerializeUnsigned(glob, DocTypeVersion, 2);
-  Ebml_SerializeUnsigned(glob, DocTypeReadVersion, 2);
-  Ebml_EndSubElement(glob, &start);
-
-  /* Open and begin writing the segment element. */
-  Ebml_StartSubElement(glob, &glob->startSegment, Segment);
-  glob->position_reference = ftello(glob->stream);
-  glob->framerate = *fps;
-  write_webm_seek_info(glob);
-
-  /* Open and write the Tracks element. */
-  glob->track_pos = ftello(glob->stream);
-  Ebml_StartSubElement(glob, &trackStart, Tracks);
-
-  /* Open and write the Track entry. */
-  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);
-  Ebml_SerializeString(glob, CodecID,
-                       fourcc == VP8_FOURCC ? "V_VP8" : "V_VP9");
-  Ebml_StartSubElement(glob, &videoStart, Video);
-  Ebml_SerializeUnsigned(glob, PixelWidth, pixelWidth);
-  Ebml_SerializeUnsigned(glob, PixelHeight, pixelHeight);
-  Ebml_SerializeUnsigned(glob, StereoMode, stereo_fmt);
-  Ebml_EndSubElement(glob, &videoStart);
-
-  /* Close Track entry. */
-  Ebml_EndSubElement(glob, &start);
-
-  /* Close Tracks element. */
-  Ebml_EndSubElement(glob, &trackStart);
-
-  /* Segment element remains open. */
-}
-
-void write_webm_block(struct EbmlGlobal *glob,
-                      const vpx_codec_enc_cfg_t *cfg,
-                      const vpx_codec_cx_pkt_t *pkt) {
-  unsigned int block_length;
-  unsigned char track_number;
-  uint16_t 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 = (uint16_t)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 = (uint32_t)pts_ms;
-    glob->cluster_pos = ftello(glob->stream);
-    Ebml_StartSubElement(glob, &glob->startCluster, 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
-        fatal("Failed to realloc cue list.");
-
-      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 = (unsigned int)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, (unsigned int)pkt->data.frame.sz);
-}
-
-void write_webm_file_footer(struct EbmlGlobal *glob, int hash) {
-  EbmlLoc start_cues;
-  EbmlLoc start_cue_point;
-  EbmlLoc start_cue_tracks;
-  unsigned int i;
-
-  if (glob->cluster_open)
-    Ebml_EndSubElement(glob, &glob->startCluster);
-
-  glob->cue_pos = ftello(glob->stream);
-  Ebml_StartSubElement(glob, &start_cues, Cues);
-
-  for (i = 0; i < glob->cues; i++) {
-    struct cue_entry *cue = &glob->cue_list[i];
-    Ebml_StartSubElement(glob, &start_cue_point, CuePoint);
-    Ebml_SerializeUnsigned(glob, CueTime, cue->time);
-
-    Ebml_StartSubElement(glob, &start_cue_tracks, CueTrackPositions);
-    Ebml_SerializeUnsigned(glob, CueTrack, 1);
-    Ebml_SerializeUnsigned64(glob, CueClusterPosition,
-                             cue->loc - glob->position_reference);
-    Ebml_EndSubElement(glob, &start_cue_tracks);
-
-    Ebml_EndSubElement(glob, &start_cue_point);
-  }
-
-  Ebml_EndSubElement(glob, &start_cues);
-
-  /* Close the Segment. */
-  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);
-}