1/*
2 *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10#ifndef WEBMENC_H_
11#define WEBMENC_H_
12
13#include <stdio.h>
14#include <stdlib.h>
15
16#if defined(_MSC_VER)
17/* MSVS doesn't define off_t */
18typedef __int64 off_t;
19#else
20#include <stdint.h>
21#endif
22
23#include "tools_common.h"
24#include "vpx/vpx_encoder.h"
25
26#ifdef __cplusplus
27extern "C" {
28#endif
29
30typedef off_t EbmlLoc;
31
32struct cue_entry {
33  unsigned int time;
34  uint64_t loc;
35};
36
37struct EbmlGlobal {
38  int debug;
39
40  FILE *stream;
41  int64_t last_pts_ms;
42  vpx_rational_t framerate;
43
44  /* These pointers are to the start of an element */
45  off_t position_reference;
46  off_t seek_info_pos;
47  off_t segment_info_pos;
48  off_t track_pos;
49  off_t cue_pos;
50  off_t cluster_pos;
51
52  /* This pointer is to a specific element to be serialized */
53  off_t track_id_pos;
54
55  /* These pointers are to the size field of the element */
56  EbmlLoc startSegment;
57  EbmlLoc startCluster;
58
59  uint32_t cluster_timecode;
60  int cluster_open;
61
62  struct cue_entry *cue_list;
63  unsigned int cues;
64};
65
66/* Stereo 3D packed frame format */
67typedef enum stereo_format {
68  STEREO_FORMAT_MONO = 0,
69  STEREO_FORMAT_LEFT_RIGHT = 1,
70  STEREO_FORMAT_BOTTOM_TOP = 2,
71  STEREO_FORMAT_TOP_BOTTOM = 3,
72  STEREO_FORMAT_RIGHT_LEFT = 11
73} stereo_format_t;
74
75void write_webm_seek_element(struct EbmlGlobal *ebml,
76                             unsigned int id,
77                             off_t pos);
78
79void write_webm_file_header(struct EbmlGlobal *glob,
80                            const vpx_codec_enc_cfg_t *cfg,
81                            const struct vpx_rational *fps,
82                            stereo_format_t stereo_fmt,
83                            unsigned int fourcc);
84
85void write_webm_block(struct EbmlGlobal *glob,
86                      const vpx_codec_enc_cfg_t *cfg,
87                      const vpx_codec_cx_pkt_t *pkt);
88
89void write_webm_file_footer(struct EbmlGlobal *glob, int hash);
90
91#ifdef __cplusplus
92}  // extern "C"
93#endif
94
95#endif  // WEBMENC_H_
96