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 #ifdef __cplusplus 27 extern "C" { 28 #endif 29 30 typedef off_t EbmlLoc; 31 32 struct cue_entry { 33 unsigned int time; 34 uint64_t loc; 35 }; 36 37 struct 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 */ 67 typedef 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 75 void write_webm_seek_element(struct EbmlGlobal *ebml, 76 unsigned int id, 77 off_t pos); 78 79 void 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 85 void write_webm_block(struct EbmlGlobal *glob, 86 const vpx_codec_enc_cfg_t *cfg, 87 const vpx_codec_cx_pkt_t *pkt); 88 89 void write_webm_file_footer(struct EbmlGlobal *glob, int hash); 90 91 #ifdef __cplusplus 92 } // extern "C" 93 #endif 94 95 #endif // WEBMENC_H_ 96
