EbmlWriter.cpp@ 68796

Last change on this file since 68796 was 68796, checked in by vboxsync, 7 years ago

VideoRec/EbmlWriter: Added support for using inherited file handles.

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/branches/VBox-3.0/src/VBox/Frontends/VBoxHeadless/VideoCapture/EbmlWriter.cpp	58652,70973
/branches/VBox-3.2/src/VBox/Frontends/VBoxHeadless/VideoCapture/EbmlWriter.cpp	66309,66318
/branches/VBox-4.0/src/VBox/Frontends/VBoxHeadless/VideoCapture/EbmlWriter.cpp	70873
/branches/VBox-4.1/src/VBox/Frontends/VBoxHeadless/VideoCapture/EbmlWriter.cpp	74233
/branches/VBox-4.2/src/VBox/Main/src-client/EbmlWriter.cpp	91503-91504,91506-91508,91510,91514-91515,91521
/branches/VBox-4.3/src/VBox/Main/src-client/EbmlWriter.cpp	91223
/branches/VBox-4.3/trunk/src/VBox/Main/src-client/EbmlWriter.cpp	91223
/branches/dsen/gui/src/VBox/Frontends/VBoxHeadless/VideoCapture/EbmlWriter.cpp	79076-79078,79089,79109-79110,79112-79113,79127-79130,79134,79141,79151,79155,79157-79159,79193,79197
/branches/dsen/gui2/src/VBox/Frontends/VBoxHeadless/VideoCapture/EbmlWriter.cpp	79224,79228,79233,79235,79258,79262-79263,79273,79341,79345,79354,79357,79387-79388,79559-79569,79572-79573,79578,79581-79582,79590-79591,79598-79599,79602-79603,79605-79606,79632,79635,79637,79644
/branches/dsen/gui3/src/VBox/Frontends/VBoxHeadless/VideoCapture/EbmlWriter.cpp	79645-79692

File size: 39.6 KB

Line
1	/* $Id: EbmlWriter.cpp 68796 2017-09-20 10:25:19Z vboxsync $ */
2	/** @file
3	* EbmlWriter.cpp - EBML writer + WebM container handling.
4	*/
5
6	/*
7	* Copyright (C) 2013-2017 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/**
19	* For more information, see:
20	* - https://w3c.github.io/media-source/webm-byte-stream-format.html
21	* - https://www.webmproject.org/docs/container/#muxer-guidelines
22	*/
23
24	#define LOG_GROUP LOG_GROUP_MAIN_DISPLAY
25	#include "LoggingNew.h"
26
27	#include <list>
28	#include <map>
29	#include <stack>
30
31	#include <math.h> /* For lround.h. */
32
33	#include <iprt/asm.h>
34	#include <iprt/buildconfig.h>
35	#include <iprt/cdefs.h>
36	#include <iprt/err.h>
37	#include <iprt/file.h>
38	#include <iprt/rand.h>
39	#include <iprt/string.h>
40
41	#include <VBox/log.h>
42	#include <VBox/version.h>
43
44	#include "EbmlWriter.h"
45	#include "EbmlMkvIDs.h"
46
47	/** No flags set. */
48	#define VBOX_EBMLWRITER_FLAG_NONE 0
49	/** The file handle was inherited. */
50	#define VBOX_EBMLWRITER_FLAG_HANDLE_INHERITED RT_BIT(0)
51
52	class Ebml
53	{
54	public:
55	typedef uint32_t EbmlClassId;
56
57	private:
58
59	struct EbmlSubElement
60	{
61	uint64_t offset;
62	EbmlClassId classId;
63	EbmlSubElement(uint64_t offs, EbmlClassId cid) : offset(offs), classId(cid) {}
64	};
65
66	/** Stack of EBML sub elements. */
67	std::stack<EbmlSubElement> m_Elements;
68	/** The file's handle. */
69	RTFILE m_hFile;
70	/** The file's name (path). */
71	Utf8Str m_strFile;
72	/** Flags. */
73	uint32_t m_fFlags;
74
75	public:
76
77	Ebml(void)
78	: m_hFile(NIL_RTFILE)
79	, m_fFlags(VBOX_EBMLWRITER_FLAG_NONE) { }
80
81	virtual ~Ebml(void) { close(); }
82
83	public:
84
85	/** Creates an EBML output file using an existing, open file handle. */
86	inline int createEx(const char *a_pszFile, PRTFILE phFile)
87	{
88	AssertPtrReturn(phFile, VERR_INVALID_POINTER);
89
90	m_hFile = *phFile;
91	m_fFlags \|= VBOX_EBMLWRITER_FLAG_HANDLE_INHERITED;
92	m_strFile = a_pszFile;
93
94	return VINF_SUCCESS;
95	}
96
97	/** Creates an EBML output file using a file name. */
98	inline int create(const char *a_pszFile, uint64_t fOpen)
99	{
100	int rc = RTFileOpen(&m_hFile, a_pszFile, fOpen);
101	if (RT_SUCCESS(rc))
102	m_strFile = a_pszFile;
103
104	return rc;
105	}
106
107	/** Returns the file name. */
108	inline const Utf8Str& getFileName(void)
109	{
110	return m_strFile;
111	}
112
113	/** Returns file size. */
114	inline uint64_t getFileSize(void)
115	{
116	return RTFileTell(m_hFile);
117	}
118
119	/** Get reference to file descriptor */
120	inline const RTFILE &getFile(void)
121	{
122	return m_hFile;
123	}
124
125	/** Returns available space on storage. */
126	inline uint64_t getAvailableSpace(void)
127	{
128	RTFOFF pcbFree;
129	int rc = RTFileQueryFsSizes(m_hFile, NULL, &pcbFree, 0, 0);
130	return (RT_SUCCESS(rc)? (uint64_t)pcbFree : UINT64_MAX);
131	}
132
133	/** Closes the file. */
134	inline void close(void)
135	{
136	if (!isOpen())
137	return;
138
139	AssertMsg(m_Elements.size() == 0,
140	("%zu elements are not closed yet (next element to close is 0x%x)\n",
141	m_Elements.size(), m_Elements.top().classId));
142
143	if (!(m_fFlags & VBOX_EBMLWRITER_FLAG_HANDLE_INHERITED))
144	{
145	RTFileClose(m_hFile);
146	m_hFile = NIL_RTFILE;
147	}
148
149	m_fFlags = VBOX_EBMLWRITER_FLAG_NONE;
150	m_strFile = "";
151	}
152
153	/**
154	* Returns whether the file is open or not.
155	*
156	* @returns True if open, false if not.
157	*/
158	inline bool isOpen(void)
159	{
160	return RTFileIsValid(m_hFile);
161	}
162
163	/** Starts an EBML sub-element. */
164	inline Ebml &subStart(EbmlClassId classId)
165	{
166	writeClassId(classId);
167	/* store the current file offset. */
168	m_Elements.push(EbmlSubElement(RTFileTell(m_hFile), classId));
169	/* Indicates that size of the element
170	* is unkown (as according to EBML specs).
171	*/
172	writeUnsignedInteger(UINT64_C(0x01FFFFFFFFFFFFFF));
173	return *this;
174	}
175
176	/** Ends an EBML sub-element. */
177	inline Ebml &subEnd(EbmlClassId classId)
178	{
179	#ifdef VBOX_STRICT
180	/* Class ID on the top of the stack should match the class ID passed
181	* to the function. Otherwise it may mean that we have a bug in the code.
182	*/
183	AssertMsg(!m_Elements.empty(), ("No elements to close anymore\n"));
184	AssertMsg(m_Elements.top().classId == classId,
185	("Ending sub element 0x%x is in wrong order (next to close is 0x%x)\n", classId, m_Elements.top().classId));
186	#else
187	RT_NOREF(classId);
188	#endif
189
190	uint64_t uPos = RTFileTell(m_hFile);
191	uint64_t uSize = uPos - m_Elements.top().offset - 8;
192	RTFileSeek(m_hFile, m_Elements.top().offset, RTFILE_SEEK_BEGIN, NULL);
193
194	/* Make sure that size will be serialized as uint64_t. */
195	writeUnsignedInteger(uSize \| UINT64_C(0x0100000000000000));
196	RTFileSeek(m_hFile, uPos, RTFILE_SEEK_BEGIN, NULL);
197	m_Elements.pop();
198	return *this;
199	}
200
201	/** Serializes a null-terminated string. */
202	inline Ebml &serializeString(EbmlClassId classId, const char *str)
203	{
204	writeClassId(classId);
205	uint64_t size = strlen(str);
206	writeSize(size);
207	write(str, size);
208	return *this;
209	}
210
211	/* Serializes an UNSIGNED integer
212	* If size is zero then it will be detected automatically. */
213	inline Ebml &serializeUnsignedInteger(EbmlClassId classId, uint64_t parm, size_t size = 0)
214	{
215	writeClassId(classId);
216	if (!size) size = getSizeOfUInt(parm);
217	writeSize(size);
218	writeUnsignedInteger(parm, size);
219	return *this;
220	}
221
222	/** Serializes a floating point value.
223	*
224	* Only 8-bytes double precision values are supported
225	* by this function.
226	*/
227	inline Ebml &serializeFloat(EbmlClassId classId, float value)
228	{
229	writeClassId(classId);
230	Assert(sizeof(uint32_t) == sizeof(float));
231	writeSize(sizeof(float));
232
233	union
234	{
235	float f;
236	uint8_t u8[4];
237	} u;
238
239	u.f = value;
240
241	for (int i = 3; i >= 0; i--) /* Converts values to big endian. */
242	write(&u.u8[i], 1);
243
244	return *this;
245	}
246
247	/** Serializes binary data. */
248	inline Ebml &serializeData(EbmlClassId classId, const void *pvData, size_t cbData)
249	{
250	writeClassId(classId);
251	writeSize(cbData);
252	write(pvData, cbData);
253	return *this;
254	}
255
256	/** Writes raw data to file. */
257	inline int write(const void *data, size_t size)
258	{
259	return RTFileWrite(m_hFile, data, size, NULL);
260	}
261
262	/** Writes an unsigned integer of variable of fixed size. */
263	inline void writeUnsignedInteger(uint64_t value, size_t size = sizeof(uint64_t))
264	{
265	/* convert to big-endian */
266	value = RT_H2BE_U64(value);
267	write(reinterpret_cast<uint8_t*>(&value) + sizeof(value) - size, size);
268	}
269
270	/** Writes EBML class ID to file.
271	*
272	* EBML ID already has a UTF8-like represenation
273	* so getSizeOfUInt is used to determine
274	* the number of its bytes.
275	*/
276	inline void writeClassId(EbmlClassId parm)
277	{
278	writeUnsignedInteger(parm, getSizeOfUInt(parm));
279	}
280
281	/** Writes data size value. */
282	inline void writeSize(uint64_t parm)
283	{
284	/* The following expression defines the size of the value that will be serialized
285	* as an EBML UTF-8 like integer (with trailing bits represeting its size):
286	1xxx xxxx - value 0 to 2^7-2
287	01xx xxxx xxxx xxxx - value 0 to 2^14-2
288	001x xxxx xxxx xxxx xxxx xxxx - value 0 to 2^21-2
289	0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^28-2
290	0000 1xxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^35-2
291	0000 01xx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^42-2
292	0000 001x xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^49-2
293	0000 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^56-2
294	*/
295	size_t size = 8 - ! (parm & (UINT64_MAX << 49)) - ! (parm & (UINT64_MAX << 42)) -
296	! (parm & (UINT64_MAX << 35)) - ! (parm & (UINT64_MAX << 28)) -
297	! (parm & (UINT64_MAX << 21)) - ! (parm & (UINT64_MAX << 14)) -
298	! (parm & (UINT64_MAX << 7));
299	/* One is subtracted in order to avoid loosing significant bit when size = 8. */
300	uint64_t mask = RT_BIT_64(size * 8 - 1);
301	writeUnsignedInteger((parm & (((mask << 1) - 1) >> size)) \| (mask >> (size - 1)), size);
302	}
303
304	/** Size calculation for variable size UNSIGNED integer.
305	*
306	* The function defines the size of the number by trimming
307	* consequent trailing zero bytes starting from the most significant.
308	* The following statement is always true:
309	* 1 <= getSizeOfUInt(arg) <= 8.
310	*
311	* Every !(arg & (UINT64_MAX << X)) expression gives one
312	* if an only if all the bits from X to 63 are set to zero.
313	*/
314	static inline size_t getSizeOfUInt(uint64_t arg)
315	{
316	return 8 - ! (arg & (UINT64_MAX << 56)) - ! (arg & (UINT64_MAX << 48)) -
317	! (arg & (UINT64_MAX << 40)) - ! (arg & (UINT64_MAX << 32)) -
318	! (arg & (UINT64_MAX << 24)) - ! (arg & (UINT64_MAX << 16)) -
319	! (arg & (UINT64_MAX << 8));
320	}
321
322	private:
323	void operator=(const Ebml &);
324
325	};
326
327	/** No flags specified. */
328	#define VBOX_WEBM_BLOCK_FLAG_NONE 0
329	/** Invisible block which can be skipped. */
330	#define VBOX_WEBM_BLOCK_FLAG_INVISIBLE 0x08
331	/** The block marks a key frame. */
332	#define VBOX_WEBM_BLOCK_FLAG_KEY_FRAME 0x80
333
334	/** The default timecode scale factor for WebM -- all timecodes in the segments are expressed in ms.
335	* This allows every cluster to have blocks with positive values up to 32.767 seconds. */
336	#define VBOX_WEBM_TIMECODESCALE_FACTOR_MS 1000000
337
338	/** Maximum time (in ms) a cluster can store. */
339	#define VBOX_WEBM_CLUSTER_MAX_LEN_MS INT16_MAX
340
341	/** Maximum time a block can store.
342	* With signed 16-bit timecodes and a default timecode scale of 1ms per unit this makes 65536ms. */
343	#define VBOX_WEBM_BLOCK_MAX_LEN_MS UINT16_MAX
344
345	#ifdef VBOX_WITH_LIBOPUS
346	# pragma pack(push)
347	# pragma pack(1)
348	/** Opus codec private data within the MKV (WEBM) container.
349	* Taken from: https://wiki.xiph.org/MatroskaOpus */
350	typedef struct WEBMOPUSPRIVDATA
351	{
352	WEBMOPUSPRIVDATA(uint32_t a_u32SampleRate, uint8_t a_u8Channels)
353	{
354	au64Head = RT_MAKE_U64_FROM_U8('O', 'p', 'u', 's', 'H', 'e', 'a', 'd');
355	u8Version = 1;
356	u8Channels = a_u8Channels;
357	u16PreSkip = 0;
358	u32SampleRate = a_u32SampleRate;
359	u16Gain = 0;
360	u8MappingFamily = 0;
361	}
362
363	uint64_t au64Head; /*< Defaults to "OpusHead". /
364	uint8_t u8Version; /*< Must be set to 1. /
365	uint8_t u8Channels;
366	uint16_t u16PreSkip;
367	/** Sample rate before encoding to Opus.
368	* Note: This rate has nothing to do with the playback rate later! */
369	uint32_t u32SampleRate;
370	uint16_t u16Gain;
371	/** Must stay 0 -- otherwise a mapping table must be appended
372	* right after this header. */
373	uint8_t u8MappingFamily;
374	} WEBMOPUSPRIVDATA, *PWEBMOPUSPRIVDATA;
375	AssertCompileSize(WEBMOPUSPRIVDATA, 19);
376	# pragma pack(pop)
377	#endif /* VBOX_WITH_LIBOPUS */
378
379	class WebMWriter_Impl
380	{
381	/**
382	* Track type enumeration.
383	*/
384	enum WebMTrackType
385	{
386	/** Unknown / invalid type. */
387	WebMTrackType_Invalid = 0,
388	/** Only writes audio. */
389	WebMTrackType_Audio = 1,
390	/** Only writes video. */
391	WebMTrackType_Video = 2
392	};
393
394	/**
395	* Structure for keeping a WebM track entry.
396	*/
397	struct WebMTrack
398	{
399	WebMTrack(WebMTrackType a_enmType, uint8_t a_uTrack, uint64_t a_offID)
400	: enmType(a_enmType)
401	, uTrack(a_uTrack)
402	, offUUID(a_offID)
403	, cTotalClusters(0)
404	, cTotalBlocks(0)
405	{
406	uUUID = RTRandU32();
407	}
408
409	/** The type of this track. */
410	WebMTrackType enmType;
411	/** Track parameters. */
412	union
413	{
414	struct
415	{
416	/** Sample rate of input data. */
417	uint32_t uHz;
418	/** Duration of the frame in samples (per channel).
419	* Valid frame size are:
420	*
421	* ms Frame size
422	* 2.5 120
423	* 5 240
424	* 10 480
425	* 20 (Default) 960
426	* 40 1920
427	* 60 2880
428	*/
429	uint16_t framesPerBlock;
430	/** How many milliseconds (ms) one written (simple) block represents. */
431	uint16_t msPerBlock;
432	} Audio;
433	};
434	/** This track's track number. Also used as key in track map. */
435	uint8_t uTrack;
436	/** The track's "UUID".
437	* Needed in case this track gets mux'ed with tracks from other files. Not really unique though. */
438	uint32_t uUUID;
439	/** Absolute offset in file of track UUID.
440	* Needed to write the hash sum within the footer. */
441	uint64_t offUUID;
442	/** Total number of clusters. */
443	uint64_t cTotalClusters;
444	/** Total number of blocks. */
445	uint64_t cTotalBlocks;
446	};
447
448	/**
449	* Structure for keeping a cue point.
450	*/
451	struct WebMCuePoint
452	{
453	WebMCuePoint(WebMTrack *a_pTrack, uint32_t a_tcClusterStart, uint64_t a_offClusterStart)
454	: pTrack(a_pTrack)
455	, tcClusterStart(a_tcClusterStart), offClusterStart(a_offClusterStart) {}
456
457	/** Associated track. */
458	WebMTrack *pTrack;
459	/** Start time code of the related cluster. */
460	uint32_t tcClusterStart;
461	/** Start offset of the related cluster. */
462	uint64_t offClusterStart;
463	};
464
465	/**
466	* Structure for keeping a WebM cluster entry.
467	*/
468	struct WebMCluster
469	{
470	WebMCluster(void)
471	: uID(0)
472	, offCluster(0)
473	, fOpen(false)
474	, tcStartMs(0)
475	, tcEndMs(0)
476	, cBlocks(0) { }
477
478	/** This cluster's ID. */
479	uint64_t uID;
480	/** Absolute offset (in bytes) of current cluster.
481	* Needed for seeking info table. */
482	uint64_t offCluster;
483	/** Whether this cluster element is opened currently. */
484	bool fOpen;
485	/** Timecode (in ms) when starting this cluster. */
486	uint64_t tcStartMs;
487	/** Timecode (in ms) when this cluster ends. */
488	uint64_t tcEndMs;
489	/** Number of (simple) blocks in this cluster. */
490	uint64_t cBlocks;
491	};
492
493	/**
494	* Structure for keeping a WebM segment entry.
495	*
496	* Current we're only using one segment.
497	*/
498	struct WebMSegment
499	{
500	WebMSegment(void)
501	: tcStart(UINT64_MAX)
502	, tcEnd(UINT64_MAX)
503	, offStart(0)
504	, offInfo(0)
505	, offSeekInfo(0)
506	, offTracks(0)
507	, offCues(0)
508	{
509	uTimecodeScaleFactor = VBOX_WEBM_TIMECODESCALE_FACTOR_MS;
510
511	LogFunc(("Default timecode scale is: %RU64ns\n", uTimecodeScaleFactor));
512	}
513
514	/** The timecode scale factor of this segment. */
515	uint64_t uTimecodeScaleFactor;
516
517	/** Timecode when starting this segment. */
518	uint64_t tcStart;
519	/** Timecode when this segment ended. */
520	uint64_t tcEnd;
521
522	/** Absolute offset (in bytes) of CurSeg. */
523	uint64_t offStart;
524	/** Absolute offset (in bytes) of general info. */
525	uint64_t offInfo;
526	/** Absolute offset (in bytes) of seeking info. */
527	uint64_t offSeekInfo;
528	/** Absolute offset (in bytes) of tracks. */
529	uint64_t offTracks;
530	/** Absolute offset (in bytes) of cues table. */
531	uint64_t offCues;
532	/** List of cue points. Needed for seeking table. */
533	std::list<WebMCuePoint> lstCues;
534
535	/** Map of tracks.
536	* The key marks the track number (not the UUID!). */
537	std::map <uint8_t, WebMTrack *> mapTracks;
538
539	/** Current cluster which is being handled.
540	*
541	* Note that we don't need (and shouldn't need, as this can be a lot of data!) a
542	* list of all clusters. */
543	WebMCluster CurCluster;
544
545	} CurSeg;
546
547	/** Audio codec to use. */
548	WebMWriter::AudioCodec m_enmAudioCodec;
549	/** Video codec to use. */
550	WebMWriter::VideoCodec m_enmVideoCodec;
551
552	/** Whether we're currently in the tracks section. */
553	bool m_fInTracksSection;
554
555	/** Size of timecodes in bytes. */
556	size_t m_cbTimecode;
557	/** Maximum value a timecode can have. */
558	uint32_t m_uTimecodeMax;
559
560	Ebml m_Ebml;
561
562	public:
563
564	typedef std::map <uint8_t, WebMTrack *> WebMTracks;
565
566	public:
567
568	WebMWriter_Impl() :
569	m_fInTracksSection(false)
570	{
571	/* Size (in bytes) of time code to write. We use 2 bytes (16 bit) by default. */
572	m_cbTimecode = 2;
573	m_uTimecodeMax = UINT16_MAX;
574	}
575
576	virtual ~WebMWriter_Impl()
577	{
578	close();
579	}
580
581	/**
582	* Adds an audio track.
583	*
584	* @returns IPRT status code.
585	* @param uHz Input sampling rate.
586	* Must be supported by the selected audio codec.
587	* @param cChannels Number of input audio channels.
588	* @param cBits Number of input bits per channel.
589	* @param puTrack Track number on successful creation. Optional.
590	*/
591	int AddAudioTrack(uint16_t uHz, uint8_t cChannels, uint8_t cBits, uint8_t *puTrack)
592	{
593	#ifdef VBOX_WITH_LIBOPUS
594	int rc;
595
596	/*
597	* Check if the requested codec rate is supported.
598	*
599	* Only the following values are supported by an Opus standard build
600	* -- every other rate only is supported by a custom build.
601	*/
602	switch (uHz)
603	{
604	case 48000:
605	case 24000:
606	case 16000:
607	case 12000:
608	case 8000:
609	rc = VINF_SUCCESS;
610	break;
611
612	default:
613	rc = VERR_NOT_SUPPORTED;
614	break;
615	}
616
617	if (RT_FAILURE(rc))
618	return rc;
619
620	const uint8_t uTrack = (uint8_t)CurSeg.mapTracks.size();
621
622	m_Ebml.subStart(MkvElem_TrackEntry);
623
624	m_Ebml.serializeUnsignedInteger(MkvElem_TrackNumber, (uint8_t)uTrack);
625	m_Ebml.serializeString (MkvElem_Language, "und" /* "Undefined"; see ISO-639-2. */);
626	m_Ebml.serializeUnsignedInteger(MkvElem_FlagLacing, (uint8_t)0);
627
628	WebMTrack *pTrack = new WebMTrack(WebMTrackType_Audio, uTrack, RTFileTell(m_Ebml.getFile()));
629
630	pTrack->Audio.uHz = uHz;
631	pTrack->Audio.msPerBlock = 20; /** Opus uses 20ms by default. Make this configurable? */
632	pTrack->Audio.framesPerBlock = uHz / (1000 /* s in ms */ / pTrack->Audio.msPerBlock);
633
634	WEBMOPUSPRIVDATA opusPrivData(uHz, cChannels);
635
636	LogFunc(("Opus @ %RU16Hz (%RU16ms + %RU16 frames per block)\n",
637	pTrack->Audio.uHz, pTrack->Audio.msPerBlock, pTrack->Audio.framesPerBlock));
638
639	m_Ebml.serializeUnsignedInteger(MkvElem_TrackUID, pTrack->uUUID, 4)
640	.serializeUnsignedInteger(MkvElem_TrackType, 2 /* Audio */)
641	.serializeString(MkvElem_CodecID, "A_OPUS")
642	.serializeData(MkvElem_CodecPrivate, &opusPrivData, sizeof(opusPrivData))
643	.serializeUnsignedInteger(MkvElem_CodecDelay, 0)
644	.serializeUnsignedInteger(MkvElem_SeekPreRoll, 80 * 1000000) /* 80ms in ns. */
645	.subStart(MkvElem_Audio)
646	.serializeFloat(MkvElem_SamplingFrequency, (float)uHz)
647	.serializeUnsignedInteger(MkvElem_Channels, cChannels)
648	.serializeUnsignedInteger(MkvElem_BitDepth, cBits)
649	.subEnd(MkvElem_Audio)
650	.subEnd(MkvElem_TrackEntry);
651
652	CurSeg.mapTracks[uTrack] = pTrack;
653
654	if (puTrack)
655	*puTrack = uTrack;
656
657	return VINF_SUCCESS;
658	#else
659	RT_NOREF(uHz, cChannels, cBits, puTrack);
660	return VERR_NOT_SUPPORTED;
661	#endif
662	}
663
664	int AddVideoTrack(uint16_t uWidth, uint16_t uHeight, double dbFPS, uint8_t *puTrack)
665	{
666	#ifdef VBOX_WITH_LIBVPX
667	RT_NOREF(dbFPS);
668
669	const uint8_t uTrack = (uint8_t)CurSeg.mapTracks.size();
670
671	m_Ebml.subStart(MkvElem_TrackEntry);
672
673	m_Ebml.serializeUnsignedInteger(MkvElem_TrackNumber, (uint8_t)uTrack);
674	m_Ebml.serializeString (MkvElem_Language, "und" /* "Undefined"; see ISO-639-2. */);
675	m_Ebml.serializeUnsignedInteger(MkvElem_FlagLacing, (uint8_t)0);
676
677	WebMTrack *pTrack = new WebMTrack(WebMTrackType_Video, uTrack, RTFileTell(m_Ebml.getFile()));
678
679	/** @todo Resolve codec type. */
680	m_Ebml.serializeUnsignedInteger(MkvElem_TrackUID, pTrack->uUUID /* UID */, 4)
681	.serializeUnsignedInteger(MkvElem_TrackType, 1 /* Video */)
682	.serializeString(MkvElem_CodecID, "V_VP8")
683	.subStart(MkvElem_Video)
684	.serializeUnsignedInteger(MkvElem_PixelWidth, uWidth)
685	.serializeUnsignedInteger(MkvElem_PixelHeight, uHeight)
686	.subEnd(MkvElem_Video);
687
688	m_Ebml.subEnd(MkvElem_TrackEntry);
689
690	CurSeg.mapTracks[uTrack] = pTrack;
691
692	if (puTrack)
693	*puTrack = uTrack;
694
695	return VINF_SUCCESS;
696	#else
697	RT_NOREF(uWidth, uHeight, dbFPS, puTrack);
698	return VERR_NOT_SUPPORTED;
699	#endif
700	}
701
702	int writeHeader(void)
703	{
704	LogFunc(("Header @ %RU64\n", RTFileTell(m_Ebml.getFile())));
705
706	m_Ebml.subStart(MkvElem_EBML)
707	.serializeUnsignedInteger(MkvElem_EBMLVersion, 1)
708	.serializeUnsignedInteger(MkvElem_EBMLReadVersion, 1)
709	.serializeUnsignedInteger(MkvElem_EBMLMaxIDLength, 4)
710	.serializeUnsignedInteger(MkvElem_EBMLMaxSizeLength, 8)
711	.serializeString(MkvElem_DocType, "webm")
712	.serializeUnsignedInteger(MkvElem_DocTypeVersion, 2)
713	.serializeUnsignedInteger(MkvElem_DocTypeReadVersion, 2)
714	.subEnd(MkvElem_EBML);
715
716	m_Ebml.subStart(MkvElem_Segment);
717
718	/* Save offset of current segment. */
719	CurSeg.offStart = RTFileTell(m_Ebml.getFile());
720
721	writeSegSeekInfo();
722
723	/* Save offset of upcoming tracks segment. */
724	CurSeg.offTracks = RTFileTell(m_Ebml.getFile());
725
726	/* The tracks segment starts right after this header. */
727	m_Ebml.subStart(MkvElem_Tracks);
728	m_fInTracksSection = true;
729
730	return VINF_SUCCESS;
731	}
732
733	int writeSimpleBlockInternal(WebMTrack *a_pTrack, uint64_t a_uTimecode,
734	const void *a_pvData, size_t a_cbData, uint8_t a_fFlags)
735	{
736	Log3Func(("SimpleBlock @ %RU64 (T%RU8, TS=%RU64, %zu bytes)\n",
737	RTFileTell(m_Ebml.getFile()), a_pTrack->uTrack, a_uTimecode, a_cbData));
738
739	/** @todo Mask out non-valid timecode bits, e.g. the upper 48 bits for a (default) 16-bit timecode. */
740	Assert(a_uTimecode <= m_uTimecodeMax);
741
742	/* Write a "Simple Block". */
743	m_Ebml.writeClassId(MkvElem_SimpleBlock);
744	/* Block size. */
745	m_Ebml.writeUnsignedInteger(0x10000000u \| ( 1 /* Track number size. */
746	+ m_cbTimecode /* Timecode size .*/
747	+ 1 /* Flags size. */
748	+ a_cbData /* Actual frame data size. */), 4);
749	/* Track number. */
750	m_Ebml.writeSize(a_pTrack->uTrack);
751	/* Timecode (relative to cluster opening timecode). */
752	m_Ebml.writeUnsignedInteger(a_uTimecode, m_cbTimecode);
753	/* Flags. */
754	m_Ebml.writeUnsignedInteger(a_fFlags, 1);
755	/* Frame data. */
756	m_Ebml.write(a_pvData, a_cbData);
757
758	a_pTrack->cTotalBlocks++;
759
760	return VINF_SUCCESS;
761	}
762
763	#ifdef VBOX_WITH_LIBVPX
764	int writeBlockVP8(WebMTrack a_pTrack, const vpx_codec_enc_cfg_t a_pCfg, const vpx_codec_cx_pkt_t *a_pPkt)
765	{
766	RT_NOREF(a_pTrack);
767
768	WebMCluster &Cluster = CurSeg.CurCluster;
769
770	/* Calculate the PTS of this frame (in ms). */
771	uint64_t tcPTSMs = a_pPkt->data.frame.pts * 1000
772	* (uint64_t) a_pCfg->g_timebase.num / a_pCfg->g_timebase.den;
773
774	if ( tcPTSMs
775	&& tcPTSMs <= CurSeg.CurCluster.tcEndMs)
776	{
777	tcPTSMs = CurSeg.CurCluster.tcEndMs + 1;
778	}
779
780	/* Whether to start a new cluster or not. */
781	bool fClusterStart = false;
782
783	/* No blocks written yet? Start a new cluster. */
784	if (a_pTrack->cTotalBlocks == 0)
785	fClusterStart = true;
786
787	/* Did we reach the maximum a cluster can hold? Use a new cluster then. */
788	if (tcPTSMs > VBOX_WEBM_CLUSTER_MAX_LEN_MS)
789	{
790	tcPTSMs = 0;
791
792	fClusterStart = true;
793	}
794
795	const bool fKeyframe = RT_BOOL(a_pPkt->data.frame.flags & VPX_FRAME_IS_KEY);
796
797	if ( fClusterStart
798	\|\| fKeyframe)
799	{
800	if (Cluster.fOpen) /* Close current cluster first. */
801	{
802	m_Ebml.subEnd(MkvElem_Cluster);
803	Cluster.fOpen = false;
804	}
805
806	Cluster.fOpen = true;
807	Cluster.uID = a_pTrack->cTotalClusters;
808	Cluster.tcStartMs = tcPTSMs;
809	Cluster.offCluster = RTFileTell(m_Ebml.getFile());
810	Cluster.cBlocks = 0;
811
812	LogFunc(("[T%RU8C%RU64] Start @ %RU64ms / %RU64 bytes\n",
813	a_pTrack->uTrack, Cluster.uID, Cluster.tcStartMs, Cluster.offCluster));
814
815	m_Ebml.subStart(MkvElem_Cluster)
816	.serializeUnsignedInteger(MkvElem_Timecode, Cluster.tcStartMs);
817
818	/* Save a cue point if this is a keyframe. */
819	if (fKeyframe)
820	{
821	WebMCuePoint cue(a_pTrack, Cluster.tcStartMs, Cluster.offCluster);
822	CurSeg.lstCues.push_back(cue);
823	}
824
825	a_pTrack->cTotalClusters++;
826	}
827
828	Cluster.tcEndMs = tcPTSMs;
829	Cluster.cBlocks++;
830
831	/* Calculate the block's timecode, which is relative to the cluster's starting timecode. */
832	uint16_t tcBlockMs = static_cast<uint16_t>(tcPTSMs - Cluster.tcStartMs);
833
834	Log2Func(("tcPTSMs=%RU64, tcBlockMs=%RU64\n", tcPTSMs, tcBlockMs));
835
836	Log2Func(("[C%RU64] cBlocks=%RU64, tcStartMs=%RU64, tcEndMs=%RU64 (%zums)\n",
837	Cluster.uID, Cluster.cBlocks, Cluster.tcStartMs, Cluster.tcEndMs, Cluster.tcEndMs - Cluster.tcStartMs));
838
839	uint8_t fFlags = 0;
840	if (fKeyframe)
841	fFlags \|= VBOX_WEBM_BLOCK_FLAG_KEY_FRAME;
842	if (a_pPkt->data.frame.flags & VPX_FRAME_IS_INVISIBLE)
843	fFlags \|= VBOX_WEBM_BLOCK_FLAG_INVISIBLE;
844
845	return writeSimpleBlockInternal(a_pTrack, tcBlockMs, a_pPkt->data.frame.buf, a_pPkt->data.frame.sz, fFlags);
846	}
847	#endif /* VBOX_WITH_LIBVPX */
848
849	#ifdef VBOX_WITH_LIBOPUS
850	/* Audio blocks that have same absolute timecode as video blocks SHOULD be written before the video blocks. */
851	int writeBlockOpus(WebMTrack a_pTrack, const void pvData, size_t cbData, uint64_t uTimeStampMs)
852	{
853	AssertPtrReturn(a_pTrack, VERR_INVALID_POINTER);
854	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
855	AssertReturn(cbData, VERR_INVALID_PARAMETER);
856
857	RT_NOREF(uTimeStampMs);
858
859	WebMCluster &Cluster = CurSeg.CurCluster;
860
861	/* Calculate the PTS of the current block:
862	*
863	* The "raw PTS" is the exact time of an object represented in nanoseconds):
864	* Raw Timecode = (Block timecode + Cluster timecode) * TimecodeScaleFactor
865	*/
866	uint64_t tcPTSMs = Cluster.tcStartMs + (Cluster.cBlocks * 20 /ms /);
867
868	/* Whether to start a new cluster or not. */
869	bool fClusterStart = false;
870
871	if (a_pTrack->cTotalBlocks == 0)
872	fClusterStart = true;
873
874	/* Did we reach the maximum a cluster can hold? Use a new cluster then. */
875	if (tcPTSMs > VBOX_WEBM_CLUSTER_MAX_LEN_MS)
876	fClusterStart = true;
877
878	if (fClusterStart)
879	{
880	if (Cluster.fOpen) /* Close current clusters first. */
881	{
882	m_Ebml.subEnd(MkvElem_Cluster);
883	Cluster.fOpen = false;
884	}
885
886	Cluster.fOpen = true;
887	Cluster.uID = a_pTrack->cTotalClusters;
888	Cluster.tcStartMs = Cluster.tcEndMs;
889	Cluster.offCluster = RTFileTell(m_Ebml.getFile());
890	Cluster.cBlocks = 0;
891
892	LogFunc(("[T%RU8C%RU64] Start @ %RU64ms / %RU64 bytes\n",
893	a_pTrack->uTrack, Cluster.uID, Cluster.tcStartMs, Cluster.offCluster));
894
895	/* As all audio frame as key frames, insert a new cue point when a new cluster starts. */
896	WebMCuePoint cue(a_pTrack, Cluster.tcStartMs, Cluster.offCluster);
897	CurSeg.lstCues.push_back(cue);
898
899	m_Ebml.subStart(MkvElem_Cluster)
900	.serializeUnsignedInteger(MkvElem_Timecode, Cluster.tcStartMs);
901
902	a_pTrack->cTotalClusters++;
903	}
904
905	Cluster.tcEndMs = tcPTSMs;
906	Cluster.cBlocks++;
907
908	/* Calculate the block's timecode, which is relative to the cluster's starting timecode. */
909	uint16_t tcBlockMs = static_cast<uint16_t>(tcPTSMs - Cluster.tcStartMs);
910
911	Log2Func(("tcPTSMs=%RU64, tcBlockMs=%RU64\n", tcPTSMs, tcBlockMs));
912
913	Log2Func(("[C%RU64] cBlocks=%RU64, tcStartMs=%RU64, tcEndMs=%RU64 (%zums)\n",
914	Cluster.uID, Cluster.cBlocks, Cluster.tcStartMs, Cluster.tcEndMs, Cluster.tcEndMs - Cluster.tcStartMs));
915
916	return writeSimpleBlockInternal(a_pTrack, tcBlockMs,
917	pvData, cbData, VBOX_WEBM_BLOCK_FLAG_KEY_FRAME);
918	}
919	#endif /* VBOX_WITH_LIBOPUS */
920
921	int WriteBlock(uint8_t uTrack, const void *pvData, size_t cbData)
922	{
923	RT_NOREF(pvData, cbData); /* Only needed for assertions for now. */
924
925	WebMTracks::iterator itTrack = CurSeg.mapTracks.find(uTrack);
926	if (itTrack == CurSeg.mapTracks.end())
927	return VERR_NOT_FOUND;
928
929	WebMTrack *pTrack = itTrack->second;
930	AssertPtr(pTrack);
931
932	int rc;
933
934	if (m_fInTracksSection)
935	{
936	m_Ebml.subEnd(MkvElem_Tracks);
937	m_fInTracksSection = false;
938	}
939
940	switch (pTrack->enmType)
941	{
942
943	case WebMTrackType_Audio:
944	{
945	#ifdef VBOX_WITH_LIBOPUS
946	if (m_enmAudioCodec == WebMWriter::AudioCodec_Opus)
947	{
948	Assert(cbData == sizeof(WebMWriter::BlockData_Opus));
949	WebMWriter::BlockData_Opus pData = (WebMWriter::BlockData_Opus )pvData;
950	rc = writeBlockOpus(pTrack, pData->pvData, pData->cbData, pData->uTimestampMs);
951	}
952	else
953	#endif /* VBOX_WITH_LIBOPUS */
954	rc = VERR_NOT_SUPPORTED;
955	break;
956	}
957
958	case WebMTrackType_Video:
959	{
960	#ifdef VBOX_WITH_LIBVPX
961	if (m_enmVideoCodec == WebMWriter::VideoCodec_VP8)
962	{
963	Assert(cbData == sizeof(WebMWriter::BlockData_VP8));
964	WebMWriter::BlockData_VP8 pData = (WebMWriter::BlockData_VP8 )pvData;
965	rc = writeBlockVP8(pTrack, pData->pCfg, pData->pPkt);
966	}
967	else
968	#endif /* VBOX_WITH_LIBVPX */
969	rc = VERR_NOT_SUPPORTED;
970	break;
971	}
972
973	default:
974	rc = VERR_NOT_SUPPORTED;
975	break;
976	}
977
978	return rc;
979	}
980
981	int writeFooter(void)
982	{
983	if (m_fInTracksSection)
984	{
985	m_Ebml.subEnd(MkvElem_Tracks);
986	m_fInTracksSection = false;
987	}
988
989	if (CurSeg.CurCluster.fOpen)
990	{
991	m_Ebml.subEnd(MkvElem_Cluster);
992	CurSeg.CurCluster.fOpen = false;
993	}
994
995	/*
996	* Write Cues element.
997	*/
998	LogFunc(("Cues @ %RU64\n", RTFileTell(m_Ebml.getFile())));
999
1000	CurSeg.offCues = RTFileTell(m_Ebml.getFile());
1001
1002	m_Ebml.subStart(MkvElem_Cues);
1003
1004	std::list<WebMCuePoint>::iterator itCuePoint = CurSeg.lstCues.begin();
1005	while (itCuePoint != CurSeg.lstCues.end())
1006	{
1007	/* Sanity. */
1008	AssertPtr(itCuePoint->pTrack);
1009
1010	const uint64_t uClusterPos = itCuePoint->offClusterStart - CurSeg.offStart;
1011
1012	LogFunc(("CuePoint @ %RU64: Track #%RU8 (Time %RU64, Pos %RU64)\n",
1013	RTFileTell(m_Ebml.getFile()), itCuePoint->pTrack->uTrack, itCuePoint->tcClusterStart, uClusterPos));
1014
1015	m_Ebml.subStart(MkvElem_CuePoint)
1016	.serializeUnsignedInteger(MkvElem_CueTime, itCuePoint->tcClusterStart)
1017	.subStart(MkvElem_CueTrackPositions)
1018	.serializeUnsignedInteger(MkvElem_CueTrack, itCuePoint->pTrack->uTrack)
1019	.serializeUnsignedInteger(MkvElem_CueClusterPosition, uClusterPos, 8)
1020	.subEnd(MkvElem_CueTrackPositions)
1021	.subEnd(MkvElem_CuePoint);
1022
1023	itCuePoint++;
1024	}
1025
1026	m_Ebml.subEnd(MkvElem_Cues);
1027	m_Ebml.subEnd(MkvElem_Segment);
1028
1029	/*
1030	* Re-Update SeekHead / Info elements.
1031	*/
1032
1033	writeSegSeekInfo();
1034
1035	return RTFileSeek(m_Ebml.getFile(), 0, RTFILE_SEEK_END, NULL);
1036	}
1037
1038	int close(void)
1039	{
1040	WebMTracks::iterator itTrack = CurSeg.mapTracks.begin();
1041	for (; itTrack != CurSeg.mapTracks.end(); ++itTrack)
1042	{
1043	delete itTrack->second;
1044	CurSeg.mapTracks.erase(itTrack);
1045	}
1046
1047	Assert(CurSeg.mapTracks.size() == 0);
1048
1049	m_Ebml.close();
1050
1051	return VINF_SUCCESS;
1052	}
1053
1054	friend class Ebml;
1055	friend class WebMWriter;
1056
1057	private:
1058
1059	/**
1060	* Writes the segment's seek information and cue points.
1061	*
1062	* @returns IPRT status code.
1063	*/
1064	void writeSegSeekInfo(void)
1065	{
1066	if (CurSeg.offSeekInfo)
1067	RTFileSeek(m_Ebml.getFile(), CurSeg.offSeekInfo, RTFILE_SEEK_BEGIN, NULL);
1068	else
1069	CurSeg.offSeekInfo = RTFileTell(m_Ebml.getFile());
1070
1071	LogFunc(("SeekHead @ %RU64\n", CurSeg.offSeekInfo));
1072
1073	m_Ebml.subStart(MkvElem_SeekHead);
1074
1075	m_Ebml.subStart(MkvElem_Seek)
1076	.serializeUnsignedInteger(MkvElem_SeekID, MkvElem_Tracks)
1077	.serializeUnsignedInteger(MkvElem_SeekPosition, CurSeg.offTracks - CurSeg.offStart, 8)
1078	.subEnd(MkvElem_Seek);
1079
1080	Assert(CurSeg.offCues - CurSeg.offStart > 0); /* Sanity. */
1081
1082	m_Ebml.subStart(MkvElem_Seek)
1083	.serializeUnsignedInteger(MkvElem_SeekID, MkvElem_Cues)
1084	.serializeUnsignedInteger(MkvElem_SeekPosition, CurSeg.offCues - CurSeg.offStart, 8)
1085	.subEnd(MkvElem_Seek);
1086
1087	m_Ebml.subStart(MkvElem_Seek)
1088	.serializeUnsignedInteger(MkvElem_SeekID, MkvElem_Info)
1089	.serializeUnsignedInteger(MkvElem_SeekPosition, CurSeg.offInfo - CurSeg.offStart, 8)
1090	.subEnd(MkvElem_Seek);
1091
1092	m_Ebml.subEnd(MkvElem_SeekHead);
1093
1094	//int64_t iFrameTime = (int64_t)1000 * 1 / 25; //m_Framerate.den / m_Framerate.num; /** @todo Fix this! */
1095	CurSeg.offInfo = RTFileTell(m_Ebml.getFile());
1096
1097	LogFunc(("Info @ %RU64\n", CurSeg.offInfo));
1098
1099	char szMux[64];
1100	RTStrPrintf(szMux, sizeof(szMux),
1101	#ifdef VBOX_WITH_LIBVPX
1102	"vpxenc%s", vpx_codec_version_str());
1103	#else
1104	"unknown");
1105	#endif
1106	char szApp[64];
1107	RTStrPrintf(szApp, sizeof(szApp), VBOX_PRODUCT " %sr%u", VBOX_VERSION_STRING, RTBldCfgRevision());
1108
1109	LogFunc(("Duration=%RU64\n", CurSeg.tcEnd - CurSeg.tcStart));
1110
1111	m_Ebml.subStart(MkvElem_Info)
1112	.serializeUnsignedInteger(MkvElem_TimecodeScale, CurSeg.uTimecodeScaleFactor)
1113	.serializeFloat(MkvElem_Segment_Duration, CurSeg.tcEnd - CurSeg.tcStart)
1114	.serializeString(MkvElem_MuxingApp, szMux)
1115	.serializeString(MkvElem_WritingApp, szApp)
1116	.subEnd(MkvElem_Info);
1117	}
1118	};
1119
1120	WebMWriter::WebMWriter(void)
1121	: m_pImpl(new WebMWriter_Impl()) {}
1122
1123	WebMWriter::~WebMWriter(void)
1124	{
1125	if (m_pImpl)
1126	{
1127	Close();
1128	delete m_pImpl;
1129	}
1130	}
1131
1132	int WebMWriter::CreateEx(const char *a_pszFilename, PRTFILE a_phFile,
1133	WebMWriter::AudioCodec a_enmAudioCodec, WebMWriter::VideoCodec a_enmVideoCodec)
1134	{
1135	try
1136	{
1137	m_pImpl->m_enmAudioCodec = a_enmAudioCodec;
1138	m_pImpl->m_enmVideoCodec = a_enmVideoCodec;
1139
1140	LogFunc(("Creating '%s'\n", a_pszFilename));
1141
1142	int rc = m_pImpl->m_Ebml.createEx(a_pszFilename, a_phFile);
1143	if (RT_SUCCESS(rc))
1144	rc = m_pImpl->writeHeader();
1145	}
1146	catch(int rc)
1147	{
1148	return rc;
1149	}
1150	return VINF_SUCCESS;
1151	}
1152
1153	int WebMWriter::Create(const char *a_pszFilename, uint64_t a_fOpen,
1154	WebMWriter::AudioCodec a_enmAudioCodec, WebMWriter::VideoCodec a_enmVideoCodec)
1155	{
1156	try
1157	{
1158	m_pImpl->m_enmAudioCodec = a_enmAudioCodec;
1159	m_pImpl->m_enmVideoCodec = a_enmVideoCodec;
1160
1161	LogFunc(("Creating '%s'\n", a_pszFilename));
1162
1163	int rc = m_pImpl->m_Ebml.create(a_pszFilename, a_fOpen);
1164	if (RT_SUCCESS(rc))
1165	rc = m_pImpl->writeHeader();
1166	}
1167	catch(int rc)
1168	{
1169	return rc;
1170	}
1171	return VINF_SUCCESS;
1172	}
1173
1174	int WebMWriter::Close(void)
1175	{
1176	if (!m_pImpl->m_Ebml.isOpen())
1177	return VINF_SUCCESS;
1178
1179	int rc = m_pImpl->writeFooter();
1180	if (RT_SUCCESS(rc))
1181	m_pImpl->close();
1182
1183	return rc;
1184	}
1185
1186	int WebMWriter::AddAudioTrack(uint16_t uHz, uint8_t cChannels, uint8_t cBitDepth, uint8_t *puTrack)
1187	{
1188	return m_pImpl->AddAudioTrack(uHz, cChannels, cBitDepth, puTrack);
1189	}
1190
1191	int WebMWriter::AddVideoTrack(uint16_t uWidth, uint16_t uHeight, double dbFPS, uint8_t *puTrack)
1192	{
1193	return m_pImpl->AddVideoTrack(uWidth, uHeight, dbFPS, puTrack);
1194	}
1195
1196	int WebMWriter::WriteBlock(uint8_t uTrack, const void *pvData, size_t cbData)
1197	{
1198	int rc;
1199
1200	try
1201	{
1202	rc = m_pImpl->WriteBlock(uTrack, pvData, cbData);
1203	}
1204	catch(int rc2)
1205	{
1206	rc = rc2;
1207	}
1208	return rc;
1209	}
1210
1211	const Utf8Str& WebMWriter::GetFileName(void)
1212	{
1213	return m_pImpl->m_Ebml.getFileName();
1214	}
1215
1216	uint64_t WebMWriter::GetFileSize(void)
1217	{
1218	return m_pImpl->m_Ebml.getFileSize();
1219	}
1220
1221	uint64_t WebMWriter::GetAvailableSpace(void)
1222	{
1223	return m_pImpl->m_Ebml.getAvailableSpace();
1224	}
1225

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source: vbox/trunk/src/VBox/Main/src-client/EbmlWriter.cpp@ 68796

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