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 */ 18 typedef __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 typedef off_t EbmlLoc; 27 28 struct cue_entry { 29 unsigned int time; 30 uint64_t loc; 31 }; 32 33 struct EbmlGlobal { 34 int debug; 35 36 FILE *stream; 37 int64_t last_pts_ms; 38 vpx_rational_t framerate; 39 40 /* These pointers are to the start of an element */ 41 off_t position_reference; 42 off_t seek_info_pos; 43 off_t segment_info_pos; 44 off_t track_pos; 45 off_t cue_pos; 46 off_t cluster_pos; 47 48 /* This pointer is to a specific element to be serialized */ 49 off_t track_id_pos; 50 51 /* These pointers are to the size field of the element */ 52 EbmlLoc startSegment; 53 EbmlLoc startCluster; 54 55 uint32_t cluster_timecode; 56 int cluster_open; 57 58 struct cue_entry *cue_list; 59 unsigned int cues; 60 }; 61 62 /* Stereo 3D packed frame format */ 63 typedef enum stereo_format { 64 STEREO_FORMAT_MONO = 0, 65 STEREO_FORMAT_LEFT_RIGHT = 1, 66 STEREO_FORMAT_BOTTOM_TOP = 2, 67 STEREO_FORMAT_TOP_BOTTOM = 3, 68 STEREO_FORMAT_RIGHT_LEFT = 11 69 } stereo_format_t; 70 71 void write_webm_seek_element(struct EbmlGlobal *ebml, 72 unsigned int id, 73 off_t pos); 74 75 void write_webm_file_header(struct EbmlGlobal *glob, 76 const vpx_codec_enc_cfg_t *cfg, 77 const struct vpx_rational *fps, 78 stereo_format_t stereo_fmt, 79 unsigned int fourcc); 80 81 void write_webm_block(struct EbmlGlobal *glob, 82 const vpx_codec_enc_cfg_t *cfg, 83 const vpx_codec_cx_pkt_t *pkt); 84 85 void write_webm_file_footer(struct EbmlGlobal *glob, int hash); 86 87 #endif // WEBMENC_H_ 88
