CUE.cpp@ 83733

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1	/* $Id: CUE.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* CUE - CUE/BIN Disk image, Core Code.
4	*/
5
6	/*
7	* Copyright (C) 2017-2020 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	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_VD_CUE
23	#include <VBox/vd-plugin.h>
24	#include <VBox/err.h>
25
26	#include <VBox/log.h>
27	#include <VBox/scsiinline.h>
28	#include <iprt/assert.h>
29	#include <iprt/asm.h>
30	#include <iprt/alloc.h>
31	#include <iprt/cdefs.h>
32	#include <iprt/ctype.h>
33	#include <iprt/path.h>
34	#include <iprt/string.h>
35
36	#include "VDBackends.h"
37	#include "VDBackendsInline.h"
38
39
40	/*********************************************************************************************************************************
41	* Constants And Macros, Structures and Typedefs *
42	*********************************************************************************************************************************/
43
44	/**
45	* CUE descriptor file token type.
46	*/
47	typedef enum CUETOKENTYPE
48	{
49	/** Invalid token type. */
50	CUETOKENTYPE_INVALID = 0,
51	/** Reserved keyword. */
52	CUETOKENTYPE_KEYWORD,
53	/** String token. */
54	CUETOKENTYPE_STRING,
55	/** Unsigned integer. */
56	CUETOKENTYPE_INTEGER_UNSIGNED,
57	/** MSF (mm:ss:ff) location token. */
58	CUETOKENTYPE_MSF,
59	/** Error token (unexpected character found). */
60	CUETOKENTYPE_ERROR,
61	/** End of stream token. */
62	CUETOKENTYPE_EOS
63	} CUETOKENTYPE;
64
65	/**
66	* CUE reservered keyword type.
67	*/
68	typedef enum CUEKEYWORD
69	{
70	/** Invalid keyword. */
71	CUEKEYWORD_INVALID = 0,
72	/** FILE. */
73	CUEKEYWORD_FILE,
74	/** BINARY */
75	CUEKEYWORD_BINARY,
76	/** MOTOROLA */
77	CUEKEYWORD_MOTOROLA,
78	/** WAVE */
79	CUEKEYWORD_WAVE,
80	/** MP3 */
81	CUEKEYWORD_MP3,
82	/** AIFF */
83	CUEKEYWORD_AIFF,
84	/** CATALOG */
85	CUEKEYWORD_CATALOG,
86	CUEKEYWORD_CDTEXTFILE,
87	CUEKEYWORD_FLAGS,
88	CUEKEYWORD_INDEX,
89	CUEKEYWORD_ISRC,
90	CUEKEYWORD_PERFORMER,
91	CUEKEYWORD_POSTGAP,
92	CUEKEYWORD_PREGAP,
93	CUEKEYWORD_SONGWRITER,
94	CUEKEYWORD_TITLE,
95	CUEKEYWORD_TRACK,
96	CUEKEYWORD_MODE1_2048,
97	CUEKEYWORD_MODE1_2352,
98	CUEKEYWORD_AUDIO,
99	CUEKEYWORD_REM
100	} CUEKEYWORD;
101
102	/**
103	* CUE sheet token.
104	*/
105	typedef struct CUETOKEN
106	{
107	/** The token type. */
108	CUETOKENTYPE enmType;
109	/** Token type dependent data. */
110	union
111	{
112	/** Keyword token. */
113	struct
114	{
115	/** The keyword enumerator. */
116	CUEKEYWORD enmKeyword;
117	} Keyword;
118	/** String token (without quotation marks). */
119	struct
120	{
121	/** Pointer to the start of the string. */
122	const char *psz;
123	/** Number of characters for the string excluding the null terminator. */
124	size_t cch;
125	} String;
126	/** Integer token. */
127	struct
128	{
129	/** Numerical constant. */
130	uint64_t u64;
131	} Int;
132	/** MSF location token. */
133	struct
134	{
135	/** Minute part. */
136	uint8_t u8Minute;
137	/** Second part. */
138	uint8_t u8Second;
139	/** Frame part. */
140	uint8_t u8Frame;
141	} Msf;
142	} Type;
143	} CUETOKEN;
144	/** Pointer to a CUE sheet token. */
145	typedef CUETOKEN *PCUETOKEN;
146	/** Pointer to a const CUE sheet token. */
147	typedef const CUETOKEN *PCCUETOKEN;
148
149	/**
150	* CUE tokenizer state.
151	*/
152	typedef struct CUETOKENIZER
153	{
154	/** Char buffer to read from. */
155	const char *pszInput;
156	/** Token 1. */
157	CUETOKEN Token1;
158	/** Token 2. */
159	CUETOKEN Token2;
160	/** Pointer to the current active token. */
161	PCUETOKEN pTokenCurr;
162	/** The next token in the input stream (used for peeking). */
163	PCUETOKEN pTokenNext;
164	} CUETOKENIZER;
165	/** Pointer to a CUE tokenizer state. */
166	typedef CUETOKENIZER *PCUETOKENIZER;
167
168	/**
169	* CUE keyword entry.
170	*/
171	typedef struct CUEKEYWORDDESC
172	{
173	/** Keyword string. */
174	const char *pszKeyword;
175	/** Size of the string in characters without zero terminator. */
176	size_t cchKeyword;
177	/** Keyword type. */
178	CUEKEYWORD enmKeyword;
179	} CUEKEYWORDDESC;
180	/** Pointer to a CUE keyword entry. */
181	typedef CUEKEYWORDDESC *PCUEKEYWORDDESC;
182	/** Pointer to a const CUE keyword entry. */
183	typedef const CUEKEYWORDDESC *PCCUEKEYWORDDESC;
184
185	/**
186	* CUE image data structure.
187	*/
188	typedef struct CUEIMAGE
189	{
190	/** Image name. */
191	const char *pszFilename;
192	/** Storage handle. */
193	PVDIOSTORAGE pStorage;
194	/** The backing file containing the actual data. */
195	char *pszDataFilename;
196	/** Storage handle for the backing file. */
197	PVDIOSTORAGE pStorageData;
198
199	/** Pointer to the per-disk VD interface list. */
200	PVDINTERFACE pVDIfsDisk;
201	/** Pointer to the per-image VD interface list. */
202	PVDINTERFACE pVDIfsImage;
203	/** Error interface. */
204	PVDINTERFACEERROR pIfError;
205	/** I/O interface. */
206	PVDINTERFACEIOINT pIfIo;
207
208	/** Open flags passed by VD layer. */
209	unsigned uOpenFlags;
210	/** Image flags defined during creation or determined during open. */
211	unsigned uImageFlags;
212	/** Maximum number of tracks the region list can hold. */
213	uint32_t cTracksMax;
214	/** Pointer to our internal region list. */
215	PVDREGIONLIST pRegionList;
216	/** Flag whether the backing file is little (BINARY) or big (MOTOROLA) endian. */
217	bool fLittleEndian;
218	} CUEIMAGE, *PCUEIMAGE;
219
220
221	/*********************************************************************************************************************************
222	* Static Variables *
223	*********************************************************************************************************************************/
224
225	/** NULL-terminated array of supported file extensions. */
226	static const VDFILEEXTENSION s_aCueFileExtensions[] =
227	{
228	{"cue", VDTYPE_OPTICAL_DISC},
229	{NULL, VDTYPE_INVALID}
230	};
231
232	/**
233	* Known keywords.
234	*/
235	static const CUEKEYWORDDESC g_aCueKeywords[] =
236	{
237	{RT_STR_TUPLE("FILE"), CUEKEYWORD_FILE},
238	{RT_STR_TUPLE("BINARY"), CUEKEYWORD_BINARY},
239	{RT_STR_TUPLE("WAVE"), CUEKEYWORD_WAVE},
240	{RT_STR_TUPLE("MP3"), CUEKEYWORD_MP3},
241	{RT_STR_TUPLE("AIFF"), CUEKEYWORD_AIFF},
242	{RT_STR_TUPLE("CATALOG"), CUEKEYWORD_CATALOG},
243	{RT_STR_TUPLE("CDTEXTFILE"), CUEKEYWORD_CDTEXTFILE},
244	{RT_STR_TUPLE("FLAGS"), CUEKEYWORD_FLAGS},
245	{RT_STR_TUPLE("INDEX"), CUEKEYWORD_INDEX},
246	{RT_STR_TUPLE("ISRC"), CUEKEYWORD_ISRC},
247	{RT_STR_TUPLE("PERFORMER"), CUEKEYWORD_PERFORMER},
248	{RT_STR_TUPLE("POSTGAP"), CUEKEYWORD_POSTGAP},
249	{RT_STR_TUPLE("PREGAP"), CUEKEYWORD_PREGAP},
250	{RT_STR_TUPLE("SONGWRITER"), CUEKEYWORD_SONGWRITER},
251	{RT_STR_TUPLE("TITLE"), CUEKEYWORD_TITLE},
252	{RT_STR_TUPLE("TRACK"), CUEKEYWORD_TRACK},
253	{RT_STR_TUPLE("MODE1/2048"), CUEKEYWORD_MODE1_2048},
254	{RT_STR_TUPLE("MODE1/2352"), CUEKEYWORD_MODE1_2352},
255	{RT_STR_TUPLE("AUDIO"), CUEKEYWORD_AUDIO},
256	{RT_STR_TUPLE("REM"), CUEKEYWORD_REM}
257	};
258
259
260	/*********************************************************************************************************************************
261	* Internal Functions *
262	*********************************************************************************************************************************/
263
264
265	/**
266	* Converts a MSF formatted address value read from the given buffer
267	* to an LBA number. MSF 00:00:00 equals LBA 0.
268	*
269	* @returns The LBA number.
270	* @param pbBuf The buffer to read the MSF formatted address
271	* from.
272	*/
273	DECLINLINE(uint32_t) cueMSF2LBA(const uint8_t *pbBuf)
274	{
275	return (pbBuf[0] * 60 + pbBuf[1]) * 75 + pbBuf[2];
276	}
277
278	/**
279	* Ensures that the region list can hold up to the given number of tracks.
280	*
281	* @returns VBox status code.
282	* @param pThis The CUE image state.
283	* @param cTracksMax Maximum number of tracks.
284	*/
285	static int cueEnsureRegionListSize(PCUEIMAGE pThis, uint32_t cTracksMax)
286	{
287	int rc = VINF_SUCCESS;
288
289	if (pThis->cTracksMax < cTracksMax)
290	{
291	PVDREGIONLIST pRegionListNew = (PVDREGIONLIST)RTMemRealloc(pThis->pRegionList,
292	RT_UOFFSETOF_DYN(VDREGIONLIST, aRegions[cTracksMax]));
293	if (pRegionListNew)
294	{
295	/* Init all the new allocated tracks. */
296	for (uint32_t i = pThis->cTracksMax; i < cTracksMax; i++)
297	pRegionListNew->aRegions[i].offRegion = UINT64_MAX;
298	pThis->pRegionList = pRegionListNew;
299	pThis->cTracksMax = cTracksMax;
300	}
301	else
302	rc = VERR_NO_MEMORY;
303	}
304
305	return rc;
306	}
307
308	/**
309	* Returns whether the tokenizer reached the end of the stream.
310	*
311	* @returns true if the tokenizer reached the end of stream marker
312	* false otherwise.
313	* @param pTokenizer The tokenizer state.
314	*/
315	DECLINLINE(bool) cueTokenizerIsEos(PCUETOKENIZER pTokenizer)
316	{
317	return *pTokenizer->pszInput == '\0';
318	}
319
320	/**
321	* Skip one character in the input stream.
322	*
323	* @returns nothing.
324	* @param pTokenizer The tokenizer state.
325	*/
326	DECLINLINE(void) cueTokenizerSkipCh(PCUETOKENIZER pTokenizer)
327	{
328	/* Never ever go past EOS. */
329	if (!cueTokenizerIsEos(pTokenizer))
330	pTokenizer->pszInput++;
331	}
332
333	/**
334	* Returns the next char in the input buffer without advancing it.
335	*
336	* @returns Next character in the input buffer.
337	* @param pTokenizer The tokenizer state.
338	*/
339	DECLINLINE(char) cueTokenizerPeekCh(PCUETOKENIZER pTokenizer)
340	{
341	return cueTokenizerIsEos(pTokenizer)
342	? '\0'
343	: *(pTokenizer->pszInput + 1);
344	}
345
346	/**
347	* Returns the next character in the input buffer advancing the internal
348	* position.
349	*
350	* @returns Next character in the stream.
351	* @param pTokenizer The tokenizer state.
352	*/
353	DECLINLINE(char) cueTokenizerGetCh(PCUETOKENIZER pTokenizer)
354	{
355	char ch;
356
357	if (cueTokenizerIsEos(pTokenizer))
358	ch = '\0';
359	else
360	ch = *pTokenizer->pszInput;
361
362	return ch;
363	}
364
365	/**
366	* Sets a new line for the tokenizer.
367	*
368	* @returns nothing.
369	* @param pTokenizer The tokenizer state.
370	* @param cSkip How many characters to skip.
371	*/
372	DECLINLINE(void) cueTokenizerNewLine(PCUETOKENIZER pTokenizer, unsigned cSkip)
373	{
374	pTokenizer->pszInput += cSkip;
375	}
376
377	/**
378	* Checks whether the current position in the input stream is a new line
379	* and skips it.
380	*
381	* @returns Flag whether there was a new line at the current position
382	* in the input buffer.
383	* @param pTokenizer The tokenizer state.
384	*/
385	DECLINLINE(bool) cueTokenizerIsSkipNewLine(PCUETOKENIZER pTokenizer)
386	{
387	bool fNewline = true;
388
389	if ( cueTokenizerGetCh(pTokenizer) == '\r'
390	&& cueTokenizerPeekCh(pTokenizer) == '\n')
391	cueTokenizerNewLine(pTokenizer, 2);
392	else if (cueTokenizerGetCh(pTokenizer) == '\n')
393	cueTokenizerNewLine(pTokenizer, 1);
394	else
395	fNewline = false;
396
397	return fNewline;
398	}
399
400	/**
401	* Skip all whitespace starting from the current input buffer position.
402	* Skips all present comments too.
403	*
404	* @returns nothing.
405	* @param pTokenizer The tokenizer state.
406	*/
407	DECLINLINE(void) cueTokenizerSkipWhitespace(PCUETOKENIZER pTokenizer)
408	{
409	while (!cueTokenizerIsEos(pTokenizer))
410	{
411	while ( cueTokenizerGetCh(pTokenizer) == ' '
412	\|\| cueTokenizerGetCh(pTokenizer) == '\t')
413	cueTokenizerSkipCh(pTokenizer);
414
415	if ( !cueTokenizerIsEos(pTokenizer)
416	&& !cueTokenizerIsSkipNewLine(pTokenizer))
417	break; /* Skipped everything, next is some real content. */
418	}
419	}
420
421	/**
422	* Skips a multi line comment.
423	*
424	* @returns nothing.
425	* @param pTokenizer The tokenizer state.
426	*/
427	DECLINLINE(void) cueTokenizerSkipComment(PCUETOKENIZER pTokenizer)
428	{
429	while ( !cueTokenizerIsEos(pTokenizer)
430	&& !cueTokenizerIsSkipNewLine(pTokenizer))
431	cueTokenizerSkipCh(pTokenizer);
432	cueTokenizerSkipWhitespace(pTokenizer);
433	}
434
435	/**
436	* Get an identifier token from the tokenizer.
437	*
438	* @returns nothing.
439	* @param pTokenizer The tokenizer state.
440	* @param pToken The uninitialized token.
441	*/
442	static void cueTokenizerGetKeyword(PCUETOKENIZER pTokenizer, PCUETOKEN pToken)
443	{
444	char ch;
445	unsigned cchKeyword = 0;
446	bool fIsKeyword = false;
447	bool fIsComment;
448	const char *pszKeyword;
449
450	Assert(RT_C_IS_ALPHA(*pTokenizer->pszInput));
451
452	do
453	{
454	fIsComment = false;
455	pszKeyword = pTokenizer->pszInput;
456
457	do
458	{
459	cchKeyword++;
460	cueTokenizerSkipCh(pTokenizer);
461	ch = cueTokenizerGetCh(pTokenizer);
462	}
463	while (RT_C_IS_ALNUM(ch) \|\| ch == '_' \|\| ch == '/' \|\| ch == '.');
464
465	/* Check whether we got a keyword or a string constant. */
466	for (unsigned i = 0; i < RT_ELEMENTS(g_aCueKeywords); i++)
467	{
468	if (!RTStrNCmp(g_aCueKeywords[i].pszKeyword, pszKeyword, RT_MIN(cchKeyword, g_aCueKeywords[i].cchKeyword)))
469	{
470	if (g_aCueKeywords[i].enmKeyword == CUEKEYWORD_REM)
471	{
472	/* The REM keyword is handled here as it indicates a comment which we just skip. */
473	cueTokenizerSkipComment(pTokenizer);
474	fIsComment = true;
475	}
476	else
477	{
478	fIsKeyword = true;
479	pToken->enmType = CUETOKENTYPE_KEYWORD;
480	pToken->Type.Keyword.enmKeyword = g_aCueKeywords[i].enmKeyword;
481	}
482	break;
483	}
484	}
485	} while (fIsComment);
486
487	/* Make it a string. */
488	if (ch == '\0')
489	pToken->enmType = CUETOKENTYPE_EOS;
490	else if (!fIsKeyword)
491	{
492	pToken->enmType = CUETOKENTYPE_STRING;
493	pToken->Type.String.psz = pszKeyword;
494	pToken->Type.String.cch = cchKeyword;
495	}
496	}
497
498	/**
499	* Get an integer value or MSF location indicator from the tokenizer.
500	*
501	* @returns nothing.
502	* @param pTokenizer The tokenizer state.
503	* @param pToken The uninitialized token.
504	*/
505	static void cueTokenizerGetIntegerOrMsf(PCUETOKENIZER pTokenizer, PCUETOKEN pToken)
506	{
507	char szInt[20 + 1]; /* Maximum which fits into an unsigned 64bit integer + zero terminator. */
508	unsigned cchInt = 0;
509	bool fMsf = false;
510	char ch = cueTokenizerGetCh(pTokenizer);
511
512	Assert(RT_C_IS_DIGIT(ch));
513	RT_ZERO(szInt);
514
515	/* Go through the characters and check for the : mark which denotes MSF location indicator. */
516	do
517	{
518	szInt[cchInt++] = ch;
519	cueTokenizerSkipCh(pTokenizer);
520	ch = cueTokenizerGetCh(pTokenizer);
521	if (ch == ':')
522	fMsf = true;
523	}
524	while ( (RT_C_IS_DIGIT(ch) \|\| ch == ':')
525	&& cchInt < sizeof(szInt));
526
527	if (cchInt < sizeof(szInt) - 1)
528	{
529	if (fMsf)
530	{
531	/* Check that the format matches our expectations (mm:ss:ff). */
532	if ( cchInt == 8 && szInt[2] == ':' && szInt[5] == ':')
533	{
534	/* Parse the single fields. */
535	szInt[2] = '\0';
536	szInt[5] = '\0';
537
538	int rc = RTStrToUInt8Full(&szInt[0], 10, &pToken->Type.Msf.u8Minute);
539	if (RT_SUCCESS(rc))
540	rc = RTStrToUInt8Full(&szInt[3], 10, &pToken->Type.Msf.u8Second);
541	if (RT_SUCCESS(rc))
542	rc = RTStrToUInt8Full(&szInt[6], 10, &pToken->Type.Msf.u8Frame);
543	if (RT_SUCCESS(rc))
544	pToken->enmType = CUETOKENTYPE_MSF;
545	else
546	pToken->enmType = CUETOKENTYPE_ERROR;
547	}
548	else
549	pToken->enmType = CUETOKENTYPE_ERROR;
550	}
551	else
552	{
553	pToken->enmType = CUETOKENTYPE_INTEGER_UNSIGNED;
554	int rc = RTStrToUInt64Full(&szInt[0], 10, &pToken->Type.Int.u64);
555	if (RT_FAILURE(rc))
556	pToken->enmType = CUETOKENTYPE_ERROR;
557	}
558	}
559	else
560	pToken->enmType = CUETOKENTYPE_ERROR;
561	}
562
563	/**
564	* Parses a string constant.
565	*
566	* @returns nothing.
567	* @param pTokenizer The tokenizer state.
568	* @param pToken The uninitialized token.
569	*
570	* @remarks: No escape sequences allowed at this time.
571	*/
572	static void cueTokenizerGetStringConst(PCUETOKENIZER pTokenizer, PCUETOKEN pToken)
573	{
574	unsigned cchStr = 0;
575
576	Assert(cueTokenizerGetCh(pTokenizer) == '\"');
577	cueTokenizerSkipCh(pTokenizer); /* Skip " */
578
579	pToken->enmType = CUETOKENTYPE_STRING;
580	pToken->Type.String.psz = pTokenizer->pszInput;
581
582	while ( !cueTokenizerIsEos(pTokenizer)
583	&& cueTokenizerGetCh(pTokenizer) != '\"')
584	{
585	cchStr++;
586	cueTokenizerSkipCh(pTokenizer);
587	}
588
589	/* End of stream without a closing quote is an error. */
590	if (RT_UNLIKELY(cueTokenizerIsEos(pTokenizer)))
591	pToken->enmType = CUETOKENTYPE_ERROR;
592	else
593	{
594	cueTokenizerSkipCh(pTokenizer); /* Skip closing " */
595	pToken->Type.String.cch = cchStr;
596	}
597	}
598
599	/**
600	* Get the end of stream token.
601	*
602	* @returns nothing.
603	* @param pTokenizer The tokenizer state.
604	* @param pToken The uninitialized token.
605	*/
606	static void cueTokenizerGetEos(PCUETOKENIZER pTokenizer, PCUETOKEN pToken)
607	{
608	Assert(cueTokenizerGetCh(pTokenizer) == '\0'); RT_NOREF(pTokenizer);
609
610	pToken->enmType = CUETOKENTYPE_EOS;
611	}
612
613	/**
614	* Read the next token from the tokenizer stream.
615	*
616	* @returns nothing.
617	* @param pTokenizer The tokenizer to read from.
618	* @param pToken Uninitialized token to fill the token data into.
619	*/
620	static void cueTokenizerReadNextToken(PCUETOKENIZER pTokenizer, PCUETOKEN pToken)
621	{
622	/* Skip all eventually existing whitespace, newlines and comments first. */
623	cueTokenizerSkipWhitespace(pTokenizer);
624
625	char ch = cueTokenizerGetCh(pTokenizer);
626	if (RT_C_IS_ALPHA(ch))
627	cueTokenizerGetKeyword(pTokenizer, pToken);
628	else if (RT_C_IS_DIGIT(ch))
629	cueTokenizerGetIntegerOrMsf(pTokenizer, pToken);
630	else if (ch == '\"')
631	cueTokenizerGetStringConst(pTokenizer, pToken);
632	else if (ch == '\0')
633	cueTokenizerGetEos(pTokenizer, pToken);
634	else
635	pToken->enmType = CUETOKENTYPE_ERROR;
636	}
637
638	/**
639	* Create a new tokenizer.
640	*
641	* @returns Pointer to the new tokenizer state on success.
642	* NULL if out of memory.
643	* @param pszInput The input to create the tokenizer for.
644	*/
645	static PCUETOKENIZER cueTokenizerCreate(const char *pszInput)
646	{
647	PCUETOKENIZER pTokenizer = (PCUETOKENIZER)RTMemAllocZ(sizeof(CUETOKENIZER));
648	if (pTokenizer)
649	{
650	pTokenizer->pszInput = pszInput;
651	pTokenizer->pTokenCurr = &pTokenizer->Token1;
652	pTokenizer->pTokenNext = &pTokenizer->Token2;
653	/* Fill the tokenizer with two first tokens. */
654	cueTokenizerReadNextToken(pTokenizer, pTokenizer->pTokenCurr);
655	cueTokenizerReadNextToken(pTokenizer, pTokenizer->pTokenNext);
656	}
657
658	return pTokenizer;
659	}
660
661	/**
662	* Get the current token in the input stream.
663	*
664	* @returns Pointer to the next token in the stream.
665	* @param pTokenizer The tokenizer to destroy.
666	*/
667	DECLINLINE(PCCUETOKEN) cueTokenizerGetToken(PCUETOKENIZER pTokenizer)
668	{
669	return pTokenizer->pTokenCurr;
670	}
671
672	/**
673	* Get the class of the current token.
674	*
675	* @returns Class of the current token.
676	* @param pTokenizer The tokenizer state.
677	*/
678	DECLINLINE(CUETOKENTYPE) cueTokenizerGetTokenType(PCUETOKENIZER pTokenizer)
679	{
680	return pTokenizer->pTokenCurr->enmType;
681	}
682
683	/**
684	* Consume the current token advancing to the next in the stream.
685	*
686	* @returns nothing.
687	* @param pTokenizer The tokenizer state.
688	*/
689	static void cueTokenizerConsume(PCUETOKENIZER pTokenizer)
690	{
691	PCUETOKEN pTokenTmp = pTokenizer->pTokenCurr;
692
693	/* Switch next token to current token and read in the next token. */
694	pTokenizer->pTokenCurr = pTokenizer->pTokenNext;
695	pTokenizer->pTokenNext = pTokenTmp;
696	cueTokenizerReadNextToken(pTokenizer, pTokenizer->pTokenNext);
697	}
698
699	/**
700	* Check whether the next token in the input stream is a keyword and matches the given
701	* keyword.
702	*
703	* @returns true if the token matched.
704	* false otherwise.
705	* @param pTokenizer The tokenizer state.
706	* @param enmKeyword The keyword to check against.
707	*/
708	static bool cueTokenizerIsKeywordEqual(PCUETOKENIZER pTokenizer, CUEKEYWORD enmKeyword)
709	{
710	PCCUETOKEN pToken = cueTokenizerGetToken(pTokenizer);
711
712	if ( pToken->enmType == CUETOKENTYPE_KEYWORD
713	&& pToken->Type.Keyword.enmKeyword == enmKeyword)
714	return true;
715
716	return false;
717	}
718
719	/**
720	* Check whether the next token in the input stream is a keyword and matches the given
721	* keyword and skips it.
722	*
723	* @returns true if the token matched and was skipped.
724	* false otherwise.
725	* @param pTokenizer The tokenizer state.
726	* @param enmKeyword The keyword to check against.
727	*/
728	static bool cueTokenizerSkipIfIsKeywordEqual(PCUETOKENIZER pTokenizer, CUEKEYWORD enmKeyword)
729	{
730	bool fEqual = cueTokenizerIsKeywordEqual(pTokenizer, enmKeyword);
731	if (fEqual)
732	cueTokenizerConsume(pTokenizer);
733
734	return fEqual;
735	}
736
737	/**
738	* Duplicates the string of the current token and consumes it.
739	*
740	* @returns VBox status code.
741	* @param pTokenizer The tokenizer state.
742	* @param ppszStr Where to store the pointer to the duplicated string on success.
743	* Free with RTStrFree().
744	*/
745	static int cueTokenizerConsumeStringDup(PCUETOKENIZER pTokenizer, char **ppszStr)
746	{
747	int rc = VINF_SUCCESS;
748	Assert(cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_STRING);
749
750	*ppszStr = RTStrDupN(pTokenizer->pTokenCurr->Type.String.psz,
751	pTokenizer->pTokenCurr->Type.String.cch);
752	if (!*ppszStr)
753	rc = VERR_NO_STR_MEMORY;
754
755	cueTokenizerConsume(pTokenizer);
756	return rc;
757	}
758
759	/**
760	* Consumes an integer token returning the value.
761	*
762	* @returns Integer value in the token.
763	* @param pTokenizer The tokenizer state.
764	*/
765	static uint64_t cueTokenizerConsumeInteger(PCUETOKENIZER pTokenizer)
766	{
767	uint64_t u64 = 0;
768	Assert(cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_INTEGER_UNSIGNED);
769
770	u64 = pTokenizer->pTokenCurr->Type.Int.u64;
771	cueTokenizerConsume(pTokenizer);
772	return u64;
773	}
774
775	/**
776	* Parses and skips the remaining string part of a directive.
777	*
778	* @returns VBox status code.
779	* @param pThis The CUE image state.
780	* @param pTokenizer The tokenizer state.
781	* @param pszDirective The directive we skip the string part for.
782	*/
783	static int cueParseAndSkipStringRemainder(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer,
784	const char *pszDirective)
785	{
786	int rc = VINF_SUCCESS;
787
788	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_STRING)
789	cueTokenizerConsume(pTokenizer);
790	else
791	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
792	N_("CUE: Error parsing '%s', expected string for %s directive"), pThis->pszFilename,
793	pszDirective);
794
795	return rc;
796	}
797
798	/**
799	* Parses and skips the remaining MSF part of a directive.
800	*
801	* @returns VBox status code.
802	* @param pThis The CUE image state.
803	* @param pTokenizer The tokenizer state.
804	* @param pszDirective The directive we skip the string part for.
805	*/
806	static int cueParseAndSkipMsfRemainder(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer,
807	const char *pszDirective)
808	{
809	int rc = VINF_SUCCESS;
810
811	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_MSF)
812	cueTokenizerConsume(pTokenizer);
813	else
814	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
815	N_("CUE: Error parsing '%s', expected MSF location for %s directive"), pThis->pszFilename,
816	pszDirective);
817
818	return rc;
819	}
820
821	/**
822	* Parses the remainder of a INDEX directive.
823	*
824	* @returns VBox status code.
825	* @param pThis The CUE image state.
826	* @param pTokenizer The tokenizer state.
827	* @param pu8Index Where to store the parsed index number on success.
828	* @param pu64Lba Where to store the parsed positional information on success.
829	*/
830	static int cueParseIndex(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer,
831	uint8_t pu8Index, uint64_t pu64Lba)
832	{
833	int rc = VINF_SUCCESS;
834
835	/*
836	* The index consists of the index number and positional information in MSF format.
837	*/
838	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_INTEGER_UNSIGNED)
839	{
840	uint64_t u64Index = cueTokenizerConsumeInteger(pTokenizer);
841	if (u64Index <= 99)
842	{
843	/* Parse the position. */
844	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_MSF)
845	{
846	PCCUETOKEN pToken = cueTokenizerGetToken(pTokenizer);
847	uint8_t abMsf[3];
848	abMsf[0] = pToken->Type.Msf.u8Minute;
849	abMsf[1] = pToken->Type.Msf.u8Second;
850	abMsf[2] = pToken->Type.Msf.u8Frame;
851
852	*pu8Index = (uint8_t)u64Index;
853	*pu64Lba = cueMSF2LBA(&abMsf[0]);
854	cueTokenizerConsume(pTokenizer);
855	}
856	else
857	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
858	N_("CUE: Error parsing '%s', expected MSF location"), pThis->pszFilename);
859	}
860	else
861	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
862	N_("CUE: Error parsing '%s', index number must be between 01 and 99"), pThis->pszFilename);
863	}
864	else
865	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
866	N_("CUE: Error parsing '%s', expected index number after INDEX directive"), pThis->pszFilename);
867
868	return rc;
869	}
870
871	/**
872	* Parses the things coming below a TRACK directive.
873	*
874	* @returns VBox status code.
875	* @param pThis The CUE image state.
876	* @param pTokenizer The tokenizer state.
877	* @param pu64LbaStart Where to store the starting LBA for this track on success.
878	*/
879	static int cueParseTrackNesting(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer, uint64_t *pu64LbaStart)
880	{
881	int rc = VINF_SUCCESS;
882	bool fSeenInitialIndex = false;
883
884	do
885	{
886	if ( cueTokenizerIsKeywordEqual(pTokenizer, CUEKEYWORD_TRACK)
887	\|\| cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_EOS)
888	break;
889
890	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_KEYWORD)
891	{
892	if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_TITLE))
893	rc = cueParseAndSkipStringRemainder(pThis, pTokenizer, "TITLE");
894	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_PERFORMER))
895	rc = cueParseAndSkipStringRemainder(pThis, pTokenizer, "PERFORMER");
896	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_PREGAP))
897	rc = cueParseAndSkipMsfRemainder(pThis, pTokenizer, "PREGAP");
898	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_POSTGAP))
899	rc = cueParseAndSkipMsfRemainder(pThis, pTokenizer, "POSTGAP");
900	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_INDEX))
901	{
902	uint8_t u8Index = 0;
903	uint64_t u64Lba = 0;
904	rc = cueParseIndex(pThis, pTokenizer, &u8Index, &u64Lba);
905	if ( RT_SUCCESS(rc)
906	&& u8Index == 1)
907	{
908	if (!fSeenInitialIndex)
909	{
910	fSeenInitialIndex = true;
911	*pu64LbaStart = u64Lba;
912	}
913	else
914	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
915	N_("CUE: Error parsing '%s', multiple INDEX 01 directives"), pThis->pszFilename);
916	}
917	}
918	else
919	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
920	N_("CUE: Error parsing '%s', unexpected directive for TRACK found"), pThis->pszFilename);
921	}
922	else
923	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
924	N_("CUE: Error parsing '%s', expected a CUE sheet keyword"), pThis->pszFilename);
925	}
926	while (RT_SUCCESS(rc));
927
928	if ( RT_SUCCESS(rc)
929	&& !fSeenInitialIndex)
930	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
931	N_("CUE: Error parsing '%s', no initial INDEX directive for this track"), pThis->pszFilename);
932
933	return rc;
934	}
935
936	/**
937	* Parses the remainder of a TRACK directive.
938	*
939	* @returns VBox status code.
940	* @param pThis The CUE image state.
941	* @param pTokenizer The tokenizer state.
942	*/
943	static int cueParseTrack(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer)
944	{
945	int rc = VINF_SUCCESS;
946
947	/*
948	* A track consists of the track number and data type followed by a list of indexes
949	* and other metadata like title and performer we don't care about.
950	*/
951	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_INTEGER_UNSIGNED)
952	{
953	uint64_t u64Track = cueTokenizerConsumeInteger(pTokenizer);
954	if (u64Track <= 99)
955	{
956	/* Parse the data mode. */
957	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_KEYWORD)
958	{
959	CUEKEYWORD enmDataMode = pTokenizer->pTokenCurr->Type.Keyword.enmKeyword;
960	if ( cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_AUDIO)
961	\|\| cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_MODE1_2048)
962	\|\| cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_MODE1_2352))
963	{
964	/*
965	* Parse everything coming below the track (index points, etc.), we only need to find
966	* the starting point.
967	*/
968	uint64_t uLbaStart = 0;
969	rc = cueParseTrackNesting(pThis, pTokenizer, &uLbaStart);
970	if (RT_SUCCESS(rc))
971	{
972	/* Create a new region for this track. */
973	RT_NOREF1(enmDataMode);
974	rc = cueEnsureRegionListSize(pThis, u64Track);
975	if (RT_SUCCESS(rc))
976	{
977	PVDREGIONDESC pRegion = &pThis->pRegionList->aRegions[u64Track - 1];
978	pRegion->offRegion = uLbaStart;
979	if (enmDataMode == CUEKEYWORD_MODE1_2352)
980	{
981	pRegion->cbBlock = 2352;
982	pRegion->enmDataForm = VDREGIONDATAFORM_MODE1_2352;
983	}
984	else if (enmDataMode == CUEKEYWORD_AUDIO)
985	{
986	pRegion->cbBlock = 2352;
987	pRegion->enmDataForm = VDREGIONDATAFORM_CDDA;
988	}
989	else
990	{
991	pRegion->cbBlock = 2048;
992	pRegion->enmDataForm = VDREGIONDATAFORM_MODE1_2048;
993	}
994	pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
995	pRegion->cbData = pRegion->cbBlock;
996	pRegion->cbMetadata = 0;
997	}
998	else
999	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS,
1000	N_("CUE: Failed to allocate memory for the track list for '%s'"),
1001	pThis->pszFilename);
1002	}
1003	}
1004	else
1005	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1006	N_("CUE: Error parsing '%s', the data mode is not supported"), pThis->pszFilename);
1007	}
1008	else
1009	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1010	N_("CUE: Error parsing '%s', expected data mode"), pThis->pszFilename);
1011	}
1012	else
1013	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1014	N_("CUE: Error parsing '%s', track number must be between 01 and 99"), pThis->pszFilename);
1015	}
1016	else
1017	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1018	N_("CUE: Error parsing '%s', expected track number after TRACK directive"), pThis->pszFilename);
1019
1020	return rc;
1021	}
1022
1023	/**
1024	* Parses a list of tracks which must come after a FILE directive.
1025	*
1026	* @returns VBox status code.
1027	* @param pThis The CUE image state.
1028	* @param pTokenizer The tokenizer state.
1029	*/
1030	static int cueParseTrackList(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer)
1031	{
1032	int rc = VINF_SUCCESS;
1033
1034	while ( RT_SUCCESS(rc)
1035	&& cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_TRACK))
1036	rc = cueParseTrack(pThis, pTokenizer);
1037
1038	return rc;
1039	}
1040
1041	/**
1042	* Parses the remainder of a FILE directive.
1043	*
1044	* @returns VBox status code.
1045	* @param pThis The CUE image state.
1046	* @param pTokenizer The tokenizer state.
1047	*/
1048	static int cueParseFile(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer)
1049	{
1050	int rc = VINF_SUCCESS;
1051
1052	/* First must come a string constant followed by a keyword giving the file type. */
1053	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_STRING)
1054	{
1055	rc = cueTokenizerConsumeStringDup(pTokenizer, &pThis->pszDataFilename);
1056	if (RT_SUCCESS(rc))
1057	{
1058	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_KEYWORD)
1059	{
1060	if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_BINARY))
1061	{
1062	pThis->fLittleEndian = true;
1063	rc = cueParseTrackList(pThis, pTokenizer);
1064	}
1065	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_MOTOROLA))
1066	{
1067	pThis->fLittleEndian = false;
1068	rc = cueParseTrackList(pThis, pTokenizer);
1069	}
1070	else
1071	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1072	N_("CUE: Error parsing '%s', the file type is not supported (only BINARY)"), pThis->pszFilename);
1073	}
1074	else
1075	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS,
1076	N_("CUE: Error parsing '%s', expected file type"), pThis->pszFilename);
1077	}
1078	else
1079	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS,
1080	N_("CUE: Error parsing '%s', failed to allocate memory for filename"), pThis->pszFilename);
1081	}
1082	else
1083	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1084	N_("CUE: Error parsing '%s', expected filename after FILE directive"), pThis->pszFilename);
1085
1086	return rc;
1087	}
1088
1089	/**
1090	* Parses the keyword in the given tokenizer.
1091	*
1092	* @returns VBox status code.
1093	* @param pThis The CUE image state.
1094	* @param pTokenizer The tokenizer state.
1095	*/
1096	static int cueParseKeyword(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer)
1097	{
1098	int rc = VINF_SUCCESS;
1099
1100	if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_FILE))
1101	rc = cueParseFile(pThis, pTokenizer);
1102	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_TITLE))
1103	rc = cueParseAndSkipStringRemainder(pThis, pTokenizer, "TITLE");
1104	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_PERFORMER))
1105	rc = cueParseAndSkipStringRemainder(pThis, pTokenizer, "PERFORMER");
1106	else if (cueTokenizerSkipIfIsKeywordEqual(pTokenizer, CUEKEYWORD_SONGWRITER))
1107	rc = cueParseAndSkipStringRemainder(pThis, pTokenizer, "SONGWRITER");
1108	else /* Skip all other keywords we don't need/support. */
1109	cueTokenizerConsume(pTokenizer);
1110
1111	return rc;
1112	}
1113
1114
1115	/**
1116	* Parses the CUE sheet from the given tokenizer.
1117	*
1118	* @returns VBox status code.
1119	* @param pThis The CUE image state.
1120	* @param pTokenizer The tokenizer state.
1121	*/
1122	static int cueParseFromTokenizer(PCUEIMAGE pThis, PCUETOKENIZER pTokenizer)
1123	{
1124	int rc = VINF_SUCCESS;
1125
1126	LogFlowFunc(("pThis=%p\n", pThis));
1127
1128	/* We don't support multiple FILE directives for now. */
1129	if (cueTokenizerGetTokenType(pTokenizer) == CUETOKENTYPE_KEYWORD)
1130	rc = cueParseKeyword(pThis, pTokenizer);
1131	else
1132	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1133	N_("CUE: Error parsing '%s', expected a keyword"), pThis->pszFilename);
1134
1135	if ( RT_SUCCESS(rc)
1136	&& cueTokenizerGetTokenType(pTokenizer) != CUETOKENTYPE_EOS)
1137	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1138	N_("CUE: Error parsing '%s', expected end of stream"), pThis->pszFilename);
1139
1140	LogFlowFunc(("returns rc=%Rrc\n", rc));
1141	return rc;
1142	}
1143
1144	/**
1145	* Finalizes the track list of the image.
1146	*
1147	* @returns VBox status code.
1148	* @param pThis The CUE image state.
1149	* @param cbImage Size of the image data in bytes.
1150	*/
1151	static int cueTrackListFinalize(PCUEIMAGE pThis, uint64_t cbImage)
1152	{
1153	int rc = VINF_SUCCESS;
1154
1155	if ( pThis->cTracksMax == 0
1156	\|\| pThis->pRegionList->aRegions[0].offRegion == UINT64_MAX)
1157	return vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1158	N_("CUE: Error parsing '%s', detected empty track list"), pThis->pszFilename);
1159
1160	/*
1161	* Fixup the track list to contain the proper sizes now that we parsed all tracks,
1162	* check also that there are no gaps in the list.
1163	*/
1164	uint32_t cTracks = 1;
1165	uint64_t offDisk = 0;
1166	for (uint32_t i = 1; i < pThis->cTracksMax; i++)
1167	{
1168	PVDREGIONDESC pRegion = &pThis->pRegionList->aRegions[i];
1169	PVDREGIONDESC pRegionPrev = &pThis->pRegionList->aRegions[i - 1];
1170	if (pRegion->offRegion != UINT64_MAX)
1171	{
1172	cTracks++;
1173	uint64_t cBlocks = pRegion->offRegion - (pRegionPrev->offRegion / pRegionPrev->cbBlock);
1174	pRegionPrev->cRegionBlocksOrBytes = pRegionPrev->cbBlock * cBlocks;
1175	offDisk += pRegionPrev->cRegionBlocksOrBytes;
1176
1177	if (cbImage < pRegionPrev->cRegionBlocksOrBytes)
1178	return vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1179	N_("CUE: Error parsing '%s', image file is too small for track list"),
1180	pThis->pszFilename);
1181
1182	cbImage -= pRegionPrev->cRegionBlocksOrBytes;
1183	pRegion->offRegion = offDisk;
1184	}
1185	else
1186	break;
1187	}
1188
1189	/* Fixup last track. */
1190	PVDREGIONDESC pRegion = &pThis->pRegionList->aRegions[cTracks - 1];
1191	pRegion->cRegionBlocksOrBytes = cbImage;
1192
1193	pThis->pRegionList->cRegions = cTracks;
1194	pThis->pRegionList->fFlags = 0;
1195
1196	/* Check that there are no gaps in the track list. */
1197	for (uint32_t i = cTracks; cTracks < pThis->cTracksMax; i++)
1198	{
1199	pRegion = &pThis->pRegionList->aRegions[i];
1200	if (pRegion->offRegion != UINT64_MAX)
1201	{
1202	rc = vdIfError(pThis->pIfError, VERR_NOT_SUPPORTED, RT_SRC_POS,
1203	N_("CUE: Error parsing '%s', detected gaps in the track list"), pThis->pszFilename);
1204	break;
1205	}
1206	}
1207
1208	return rc;
1209	}
1210
1211	/**
1212	* Internal. Free all allocated space for representing an image except pThis,
1213	* and optionally delete the image from disk.
1214	*/
1215	static int cueFreeImage(PCUEIMAGE pThis, bool fDelete)
1216	{
1217	int rc = VINF_SUCCESS;
1218
1219	/* Freeing a never allocated image (e.g. because the open failed) is
1220	* not signalled as an error. After all nothing bad happens. */
1221	if (pThis)
1222	{
1223	if (pThis->pStorage)
1224	{
1225	rc = vdIfIoIntFileClose(pThis->pIfIo, pThis->pStorage);
1226	pThis->pStorage = NULL;
1227	}
1228
1229	if (pThis->pStorageData)
1230	{
1231	rc = vdIfIoIntFileClose(pThis->pIfIo, pThis->pStorageData);
1232	pThis->pStorageData = NULL;
1233	}
1234
1235	if (pThis->pRegionList)
1236	{
1237	RTMemFree(pThis->pRegionList);
1238	pThis->pRegionList = NULL;
1239	}
1240
1241	if (pThis->pszDataFilename)
1242	{
1243	RTStrFree(pThis->pszDataFilename);
1244	pThis->pszDataFilename = NULL;
1245	}
1246
1247	if (fDelete && pThis->pszFilename)
1248	vdIfIoIntFileDelete(pThis->pIfIo, pThis->pszFilename);
1249	}
1250
1251	LogFlowFunc(("returns %Rrc\n", rc));
1252	return rc;
1253	}
1254
1255	/**
1256	* Internal: Open an image, constructing all necessary data structures.
1257	*/
1258	static int cueOpenImage(PCUEIMAGE pThis, unsigned uOpenFlags)
1259	{
1260	pThis->uOpenFlags = uOpenFlags;
1261
1262	pThis->pIfError = VDIfErrorGet(pThis->pVDIfsDisk);
1263	pThis->pIfIo = VDIfIoIntGet(pThis->pVDIfsImage);
1264	AssertPtrReturn(pThis->pIfIo, VERR_INVALID_PARAMETER);
1265
1266	/* Open the image. */
1267	int rc = vdIfIoIntFileOpen(pThis->pIfIo, pThis->pszFilename,
1268	VDOpenFlagsToFileOpenFlags(uOpenFlags,
1269	false /* fCreate */),
1270	&pThis->pStorage);
1271	if (RT_SUCCESS(rc))
1272	{
1273	uint64_t cbFile;
1274	/* The descriptor file shouldn't be huge, so limit ourselfs to 16KB for now. */
1275	rc = vdIfIoIntFileGetSize(pThis->pIfIo, pThis->pStorage, &cbFile);
1276	if ( RT_SUCCESS(rc)
1277	&& cbFile <= _16K - 1)
1278	{
1279	char szInput[_16K];
1280	RT_ZERO(szInput);
1281
1282	rc = vdIfIoIntFileReadSync(pThis->pIfIo, pThis->pStorage, 0,
1283	&szInput, cbFile);
1284	if (RT_SUCCESS(rc))
1285	{
1286	RTStrPurgeEncoding(&szInput[0]);
1287	PCUETOKENIZER pTokenizer = cueTokenizerCreate(&szInput[0]);
1288	if (pTokenizer)
1289	{
1290	rc = cueParseFromTokenizer(pThis, pTokenizer);
1291	RTMemFree(pTokenizer);
1292	if (RT_SUCCESS(rc))
1293	{
1294	/* Open the backing file. */
1295	char szBackingFile[RTPATH_MAX];
1296	rc = RTStrCopy(&szBackingFile[0], sizeof(szBackingFile), pThis->pszFilename);
1297	if (RT_SUCCESS(rc))
1298	{
1299	RTPathStripFilename(&szBackingFile[0]);
1300	rc = RTPathAppend(&szBackingFile[0], sizeof(szBackingFile), pThis->pszDataFilename);
1301	if (RT_SUCCESS(rc))
1302	{
1303	rc = vdIfIoIntFileOpen(pThis->pIfIo, szBackingFile,
1304	VDOpenFlagsToFileOpenFlags(uOpenFlags,
1305	false /* fCreate */),
1306	&pThis->pStorageData);
1307	if (RT_SUCCESS(rc))
1308	{
1309	rc = vdIfIoIntFileGetSize(pThis->pIfIo, pThis->pStorageData, &cbFile);
1310	if (RT_SUCCESS(rc))
1311	rc = cueTrackListFinalize(pThis, cbFile);
1312	else
1313	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS,
1314	N_("CUE: Unable to query size of backing file '%s'"),
1315	szBackingFile);
1316	}
1317	else
1318	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS,
1319	N_("CUE: Unable to open backing file '%s'"),
1320	szBackingFile);
1321	}
1322	else
1323	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS,
1324	N_("CUE: Error constructing backing filename from '%s'"),
1325	pThis->pszFilename);
1326	}
1327	else
1328	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS,
1329	N_("CUE: Error constructing backing filename from '%s'"),
1330	pThis->pszFilename);
1331	}
1332	}
1333	}
1334	else
1335	rc = vdIfError(pThis->pIfError, rc, RT_SRC_POS, N_("CUE: Error reading '%s'"), pThis->pszFilename);
1336	}
1337	else if (RT_SUCCESS(rc))
1338	rc = vdIfError(pThis->pIfError, VERR_VD_INVALID_SIZE,
1339	RT_SRC_POS, N_("CUE: The descriptor file '%s' is too huge (%llu vs %llu)"),
1340	pThis->pszFilename, cbFile, _16K - 1);
1341	}
1342	/* else: Do NOT signal an appropriate error here, as the VD layer has the
1343	* choice of retrying the open if it failed. */
1344
1345	if (RT_FAILURE(rc))
1346	cueFreeImage(pThis, false);
1347	return rc;
1348	}
1349
1350	/**
1351	* Converts the data form enumeration to a string.
1352	*
1353	* @returns String name of the given data form.
1354	* @param enmDataForm The data form.
1355	*/
1356	static const char *cueRegionDataFormStringify(VDREGIONDATAFORM enmDataForm)
1357	{
1358	switch (enmDataForm)
1359	{
1360	#define DATAFORM2STR(tag) case VDREGIONDATAFORM_##tag: return #tag
1361
1362	DATAFORM2STR(INVALID);
1363	DATAFORM2STR(RAW);
1364	DATAFORM2STR(CDDA);
1365	DATAFORM2STR(CDDA_PAUSE);
1366	DATAFORM2STR(MODE1_2048);
1367	DATAFORM2STR(MODE1_2352);
1368	DATAFORM2STR(MODE1_0);
1369	DATAFORM2STR(XA_2336);
1370	DATAFORM2STR(XA_2352);
1371	DATAFORM2STR(XA_0);
1372	DATAFORM2STR(MODE2_2336);
1373	DATAFORM2STR(MODE2_2352);
1374	DATAFORM2STR(MODE2_0);
1375
1376	#undef DATAFORM2STR
1377
1378	default:
1379	{
1380	AssertMsgFailed(("Unknown data form %d! forgot to add it to the switch?\n", enmDataForm));
1381	return "UNKNOWN!";
1382	}
1383	}
1384	}
1385
1386	/**
1387	* Converts the data form enumeration to a string.
1388	*
1389	* @returns String name of the given data form.
1390	* @param enmMetadataForm The metadata form.
1391	*/
1392	static const char *cueRegionMetadataFormStringify(VDREGIONMETADATAFORM enmMetadataForm)
1393	{
1394	switch (enmMetadataForm)
1395	{
1396	#define METADATAFORM2STR(tag) case VDREGIONMETADATAFORM_##tag: return #tag
1397
1398	METADATAFORM2STR(INVALID);
1399	METADATAFORM2STR(RAW);
1400	METADATAFORM2STR(NONE);
1401
1402	#undef METADATAFORM2STR
1403
1404	default:
1405	{
1406	AssertMsgFailed(("Unknown metadata form %d! forgot to add it to the switch?\n", enmMetadataForm));
1407	return "UNKNOWN!";
1408	}
1409	}
1410	}
1411
1412	/**
1413	* Returns the region containing the given offset.
1414	*
1415	* @returns Pointer to the region or NULL if not found.
1416	* @param pThis The CUE image state.
1417	* @param uOffset The offset to look for.
1418	*/
1419	static PCVDREGIONDESC cueRegionQueryByOffset(PCUEIMAGE pThis, uint64_t uOffset)
1420	{
1421	for (uint32_t i = 0; i < pThis->pRegionList->cRegions; i++)
1422	{
1423	PCVDREGIONDESC pRegion = &pThis->pRegionList->aRegions[i];
1424	if ( pRegion->offRegion <= uOffset
1425	&& pRegion->offRegion + pRegion->cRegionBlocksOrBytes > uOffset)
1426	return pRegion;
1427	}
1428
1429	return NULL;
1430	}
1431
1432	/** @copydoc VDIMAGEBACKEND::pfnProbe */
1433	static DECLCALLBACK(int) cueProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
1434	PVDINTERFACE pVDIfsImage, VDTYPE enmDesiredType, VDTYPE *penmType)
1435	{
1436	RT_NOREF(pVDIfsDisk, enmDesiredType);
1437	LogFlowFunc(("pszFilename=\"%s\" pVDIfsDisk=%#p pVDIfsImage=%#p\n", pszFilename, pVDIfsDisk, pVDIfsImage));
1438	int rc = VINF_SUCCESS;
1439
1440	AssertReturn((VALID_PTR(pszFilename) && *pszFilename), VERR_INVALID_PARAMETER);
1441
1442	PCUEIMAGE pThis = (PCUEIMAGE)RTMemAllocZ(sizeof(CUEIMAGE));
1443	if (RT_LIKELY(pThis))
1444	{
1445	pThis->pszFilename = pszFilename;
1446	pThis->pStorage = NULL;
1447	pThis->pVDIfsDisk = pVDIfsDisk;
1448	pThis->pVDIfsImage = pVDIfsImage;
1449
1450	rc = cueOpenImage(pThis, VD_OPEN_FLAGS_INFO \| VD_OPEN_FLAGS_READONLY);
1451	cueFreeImage(pThis, false);
1452	RTMemFree(pThis);
1453
1454	if (RT_SUCCESS(rc))
1455	*penmType = VDTYPE_OPTICAL_DISC;
1456	else
1457	rc = VERR_VD_GEN_INVALID_HEADER;
1458	}
1459	else
1460	rc = VERR_NO_MEMORY;
1461
1462	LogFlowFunc(("returns %Rrc\n", rc));
1463	return rc;
1464	}
1465
1466	/** @copydoc VDIMAGEBACKEND::pfnOpen */
1467	static DECLCALLBACK(int) cueOpen(const char *pszFilename, unsigned uOpenFlags,
1468	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
1469	VDTYPE enmType, void **ppBackendData)
1470	{
1471	LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n",
1472	pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData));
1473	int rc;
1474	PCUEIMAGE pThis;
1475
1476	/* Check open flags. All valid flags are supported. */
1477	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
1478	AssertReturn((VALID_PTR(pszFilename) && *pszFilename), VERR_INVALID_PARAMETER);
1479	AssertReturn(enmType == VDTYPE_OPTICAL_DISC, VERR_NOT_SUPPORTED);
1480
1481	pThis = (PCUEIMAGE)RTMemAllocZ(sizeof(CUEIMAGE));
1482	if (RT_LIKELY(pThis))
1483	{
1484	pThis->pszFilename = pszFilename;
1485	pThis->pStorage = NULL;
1486	pThis->pVDIfsDisk = pVDIfsDisk;
1487	pThis->pVDIfsImage = pVDIfsImage;
1488
1489	rc = cueOpenImage(pThis, uOpenFlags);
1490	if (RT_SUCCESS(rc))
1491	*ppBackendData = pThis;
1492	else
1493	RTMemFree(pThis);
1494	}
1495	else
1496	rc = VERR_NO_MEMORY;
1497
1498	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
1499	return rc;
1500	}
1501
1502	/** @copydoc VDIMAGEBACKEND::pfnClose */
1503	static DECLCALLBACK(int) cueClose(void *pBackendData, bool fDelete)
1504	{
1505	LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
1506	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1507	int rc = cueFreeImage(pThis, fDelete);
1508	RTMemFree(pThis);
1509
1510	LogFlowFunc(("returns %Rrc\n", rc));
1511	return rc;
1512	}
1513
1514	/** @copydoc VDIMAGEBACKEND::pfnRead */
1515	static DECLCALLBACK(int) cueRead(void *pBackendData, uint64_t uOffset, size_t cbToRead,
1516	PVDIOCTX pIoCtx, size_t *pcbActuallyRead)
1517	{
1518	LogFlowFunc(("pBackendData=%#p uOffset=%llu cbToRead=%zu pIoCtx=%#p pcbActuallyRead=%#p\n",
1519	pBackendData, uOffset, cbToRead, pIoCtx, pcbActuallyRead));
1520	int rc = VINF_SUCCESS;
1521	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1522
1523	/* Get the region */
1524	PCVDREGIONDESC pRegion = cueRegionQueryByOffset(pThis, uOffset);
1525	if (pRegion)
1526	{
1527	/* Clip read size to remain in the region (not necessary I think). */
1528	uint64_t offRead = uOffset - pRegion->offRegion;
1529
1530	cbToRead = RT_MIN(cbToRead, pRegion->cRegionBlocksOrBytes - offRead);
1531	Assert(!(cbToRead % pRegion->cbBlock));
1532
1533	/* Need to convert audio data samples to big endian. */
1534	if ( pRegion->enmDataForm == VDREGIONDATAFORM_CDDA
1535	&& pThis->fLittleEndian)
1536	{
1537	*pcbActuallyRead = cbToRead;
1538
1539	while (cbToRead)
1540	{
1541	RTSGSEG Segment;
1542	unsigned cSegments = 1;
1543	size_t cbSeg = 0;
1544
1545	cbSeg = vdIfIoIntIoCtxSegArrayCreate(pThis->pIfIo, pIoCtx, &Segment,
1546	&cSegments, cbToRead);
1547
1548	rc = vdIfIoIntFileReadSync(pThis->pIfIo, pThis->pStorageData, uOffset, Segment.pvSeg, cbSeg);
1549	if (RT_FAILURE(rc))
1550	break;
1551
1552	uint16_t pu16Buf = (uint16_t )Segment.pvSeg;
1553	for (uint32_t i = 0; i < cbSeg / sizeof(uint16_t); i++)
1554	{
1555	pu16Buf = RT_BSWAP_U16(pu16Buf);
1556	pu16Buf++;
1557	}
1558
1559	cbToRead -= RT_MIN(cbToRead, cbSeg);
1560	uOffset += cbSeg;
1561	}
1562	}
1563	else
1564	{
1565	rc = vdIfIoIntFileReadUser(pThis->pIfIo, pThis->pStorageData, uOffset,
1566	pIoCtx, cbToRead);
1567	if (RT_SUCCESS(rc))
1568	*pcbActuallyRead = cbToRead;
1569	}
1570	}
1571	else
1572	rc = VERR_INVALID_PARAMETER;
1573
1574	return rc;
1575	}
1576
1577	/** @copydoc VDIMAGEBACKEND::pfnWrite */
1578	static DECLCALLBACK(int) cueWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite,
1579	PVDIOCTX pIoCtx, size_t pcbWriteProcess, size_t pcbPreRead,
1580	size_t *pcbPostRead, unsigned fWrite)
1581	{
1582	RT_NOREF7(uOffset, cbToWrite, pIoCtx, pcbWriteProcess, pcbPreRead, pcbPostRead, fWrite);
1583	LogFlowFunc(("pBackendData=%#p uOffset=%llu pIoCtx=%#p cbToWrite=%zu pcbWriteProcess=%#p pcbPreRead=%#p pcbPostRead=%#p\n",
1584	pBackendData, uOffset, pIoCtx, cbToWrite, pcbWriteProcess, pcbPreRead, pcbPostRead));
1585	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1586	int rc;
1587
1588	AssertPtr(pThis);
1589
1590	if (pThis->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1591	rc = VERR_VD_IMAGE_READ_ONLY;
1592	else
1593	rc = VERR_NOT_SUPPORTED;
1594
1595	LogFlowFunc(("returns %Rrc\n", rc));
1596	return rc;
1597	}
1598
1599	/** @copydoc VDIMAGEBACKEND::pfnFlush */
1600	static DECLCALLBACK(int) cueFlush(void *pBackendData, PVDIOCTX pIoCtx)
1601	{
1602	RT_NOREF2(pBackendData, pIoCtx);
1603
1604	return VINF_SUCCESS;
1605	}
1606
1607	/** @copydoc VDIMAGEBACKEND::pfnGetVersion */
1608	static DECLCALLBACK(unsigned) cueGetVersion(void *pBackendData)
1609	{
1610	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1611	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1612
1613	AssertPtrReturn(pThis, 0);
1614
1615	return 1;
1616	}
1617
1618	/** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
1619	static DECLCALLBACK(uint64_t) cueGetFileSize(void *pBackendData)
1620	{
1621	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1622	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1623
1624	AssertPtrReturn(pThis, 0);
1625
1626	uint64_t cbFile = 0;
1627	if (pThis->pStorage)
1628	{
1629	int rc = vdIfIoIntFileGetSize(pThis->pIfIo, pThis->pStorageData, &cbFile);
1630	if (RT_FAILURE(rc))
1631	cbFile = 0; /* Make sure it is 0 */
1632	}
1633
1634	LogFlowFunc(("returns %lld\n", cbFile));
1635	return cbFile;
1636	}
1637
1638	/** @copydoc VDIMAGEBACKEND::pfnGetPCHSGeometry */
1639	static DECLCALLBACK(int) cueGetPCHSGeometry(void *pBackendData,
1640	PVDGEOMETRY pPCHSGeometry)
1641	{
1642	RT_NOREF1(pPCHSGeometry);
1643	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
1644	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1645	int rc = VINF_SUCCESS;
1646
1647	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1648
1649	rc = VERR_NOT_SUPPORTED;
1650
1651	LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
1652	return rc;
1653	}
1654
1655	/** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */
1656	static DECLCALLBACK(int) cueSetPCHSGeometry(void *pBackendData,
1657	PCVDGEOMETRY pPCHSGeometry)
1658	{
1659	RT_NOREF1(pPCHSGeometry);
1660	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n",
1661	pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
1662	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1663	int rc = VINF_SUCCESS;
1664
1665	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1666
1667	if (pThis->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1668	rc = VERR_VD_IMAGE_READ_ONLY;
1669	else
1670	rc = VERR_NOT_SUPPORTED;
1671
1672	LogFlowFunc(("returns %Rrc\n", rc));
1673	return rc;
1674	}
1675
1676	/** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */
1677	static DECLCALLBACK(int) cueGetLCHSGeometry(void *pBackendData,
1678	PVDGEOMETRY pLCHSGeometry)
1679	{
1680	RT_NOREF1(pLCHSGeometry);
1681	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
1682	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1683	int rc = VINF_SUCCESS;
1684
1685	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1686
1687	rc = VERR_NOT_SUPPORTED;
1688
1689	LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
1690	return rc;
1691	}
1692
1693	/** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */
1694	static DECLCALLBACK(int) cueSetLCHSGeometry(void *pBackendData,
1695	PCVDGEOMETRY pLCHSGeometry)
1696	{
1697	RT_NOREF1(pLCHSGeometry);
1698	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n",
1699	pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
1700	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1701	int rc = VINF_SUCCESS;
1702
1703	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1704
1705	if (pThis->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1706	rc = VERR_VD_IMAGE_READ_ONLY;
1707	else
1708	rc = VERR_NOT_SUPPORTED;
1709
1710	LogFlowFunc(("returns %Rrc\n", rc));
1711	return rc;
1712	}
1713
1714	/** @copydoc VDIMAGEBACKEND::pfnQueryRegions */
1715	static DECLCALLBACK(int) cueQueryRegions(void pBackendData, PCVDREGIONLIST ppRegionList)
1716	{
1717	LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList));
1718	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1719
1720	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1721
1722	*ppRegionList = pThis->pRegionList;
1723	LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS));
1724	return VINF_SUCCESS;
1725	}
1726
1727	/** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */
1728	static DECLCALLBACK(void) cueRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList)
1729	{
1730	RT_NOREF1(pRegionList);
1731	LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList));
1732	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1733	AssertPtr(pThis); RT_NOREF(pThis);
1734
1735	/* Nothing to do here. */
1736	}
1737
1738	/** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */
1739	static DECLCALLBACK(unsigned) cueGetImageFlags(void *pBackendData)
1740	{
1741	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1742	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1743
1744	AssertPtrReturn(pThis, 0);
1745
1746	LogFlowFunc(("returns %#x\n", pThis->uImageFlags));
1747	return pThis->uImageFlags;
1748	}
1749
1750	/** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */
1751	static DECLCALLBACK(unsigned) cueGetOpenFlags(void *pBackendData)
1752	{
1753	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1754	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1755
1756	AssertPtrReturn(pThis, 0);
1757
1758	LogFlowFunc(("returns %#x\n", pThis->uOpenFlags));
1759	return pThis->uOpenFlags;
1760	}
1761
1762	/** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */
1763	static DECLCALLBACK(int) cueSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
1764	{
1765	LogFlowFunc(("pBackendData=%#p\n uOpenFlags=%#x", pBackendData, uOpenFlags));
1766	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1767	int rc = VINF_SUCCESS;
1768
1769	/* Image must be opened and the new flags must be valid. */
1770	if (!pThis \|\| (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY \| VD_OPEN_FLAGS_INFO
1771	\| VD_OPEN_FLAGS_ASYNC_IO \| VD_OPEN_FLAGS_SHAREABLE
1772	\| VD_OPEN_FLAGS_SEQUENTIAL \| VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS)))
1773	rc = VERR_INVALID_PARAMETER;
1774	else
1775	{
1776	/* Implement this operation via reopening the image. */
1777	rc = cueFreeImage(pThis, false);
1778	if (RT_SUCCESS(rc))
1779	rc = cueOpenImage(pThis, uOpenFlags);
1780	}
1781
1782	LogFlowFunc(("returns %Rrc\n", rc));
1783	return rc;
1784	}
1785
1786	/** @copydoc VDIMAGEBACKEND::pfnGetComment */
1787	VD_BACKEND_CALLBACK_GET_COMMENT_DEF_NOT_SUPPORTED(cueGetComment);
1788
1789	/** @copydoc VDIMAGEBACKEND::pfnSetComment */
1790	VD_BACKEND_CALLBACK_SET_COMMENT_DEF_NOT_SUPPORTED(cueSetComment, PCUEIMAGE);
1791
1792	/** @copydoc VDIMAGEBACKEND::pfnGetUuid */
1793	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(cueGetUuid);
1794
1795	/** @copydoc VDIMAGEBACKEND::pfnSetUuid */
1796	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(cueSetUuid, PCUEIMAGE);
1797
1798	/** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */
1799	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(cueGetModificationUuid);
1800
1801	/** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */
1802	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(cueSetModificationUuid, PCUEIMAGE);
1803
1804	/** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */
1805	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(cueGetParentUuid);
1806
1807	/** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */
1808	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(cueSetParentUuid, PCUEIMAGE);
1809
1810	/** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */
1811	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(cueGetParentModificationUuid);
1812
1813	/** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */
1814	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(cueSetParentModificationUuid, PCUEIMAGE);
1815
1816	/** @copydoc VDIMAGEBACKEND::pfnDump */
1817	static DECLCALLBACK(void) cueDump(void *pBackendData)
1818	{
1819	PCUEIMAGE pThis = (PCUEIMAGE)pBackendData;
1820
1821	AssertPtrReturnVoid(pThis);
1822	vdIfErrorMessage(pThis->pIfError, "Dumping CUE image \"%s\" mode=%s uOpenFlags=%X File=%#p\n",
1823	pThis->pszFilename,
1824	(pThis->uOpenFlags & VD_OPEN_FLAGS_READONLY) ? "r/o" : "r/w",
1825	pThis->uOpenFlags,
1826	pThis->pStorage);
1827	vdIfErrorMessage(pThis->pIfError, "Backing File \"%s\" File=%#p\n",
1828	pThis->pszDataFilename, pThis->pStorageData);
1829	vdIfErrorMessage(pThis->pIfError, "Number of tracks: %u\n", pThis->pRegionList->cRegions);
1830	for (uint32_t i = 0; i < pThis->pRegionList->cRegions; i++)
1831	{
1832	PCVDREGIONDESC pRegion = &pThis->pRegionList->aRegions[i];
1833
1834	vdIfErrorMessage(pThis->pIfError, "------------------------ Track %u ------------------------\n", i);
1835	vdIfErrorMessage(pThis->pIfError, "Start=%llu Size=%llu BlockSize=%llu DataSize=%llu MetadataSize=%llu\n",
1836	pRegion->offRegion, pRegion->cRegionBlocksOrBytes, pRegion->cbBlock, pRegion->cbData,
1837	pRegion->cbMetadata);
1838	vdIfErrorMessage(pThis->pIfError, "DataForm=%s MetadataForm=%s\n",
1839	cueRegionDataFormStringify(pRegion->enmDataForm),
1840	cueRegionMetadataFormStringify(pRegion->enmMetadataForm));
1841	}
1842	}
1843
1844
1845
1846	const VDIMAGEBACKEND g_CueBackend =
1847	{
1848	/* u32Version */
1849	VD_IMGBACKEND_VERSION,
1850	/* pszBackendName */
1851	"CUE",
1852	/* uBackendCaps */
1853	VD_CAP_FILE \| VD_CAP_VFS,
1854	/* paFileExtensions */
1855	s_aCueFileExtensions,
1856	/* paConfigInfo */
1857	NULL,
1858	/* pfnProbe */
1859	cueProbe,
1860	/* pfnOpen */
1861	cueOpen,
1862	/* pfnCreate */
1863	NULL,
1864	/* pfnRename */
1865	NULL,
1866	/* pfnClose */
1867	cueClose,
1868	/* pfnRead */
1869	cueRead,
1870	/* pfnWrite */
1871	cueWrite,
1872	/* pfnFlush */
1873	cueFlush,
1874	/* pfnDiscard */
1875	NULL,
1876	/* pfnGetVersion */
1877	cueGetVersion,
1878	/* pfnGetFileSize */
1879	cueGetFileSize,
1880	/* pfnGetPCHSGeometry */
1881	cueGetPCHSGeometry,
1882	/* pfnSetPCHSGeometry */
1883	cueSetPCHSGeometry,
1884	/* pfnGetLCHSGeometry */
1885	cueGetLCHSGeometry,
1886	/* pfnSetLCHSGeometry */
1887	cueSetLCHSGeometry,
1888	/* pfnQueryRegions */
1889	cueQueryRegions,
1890	/* pfnRegionListRelease */
1891	cueRegionListRelease,
1892	/* pfnGetImageFlags */
1893	cueGetImageFlags,
1894	/* pfnGetOpenFlags */
1895	cueGetOpenFlags,
1896	/* pfnSetOpenFlags */
1897	cueSetOpenFlags,
1898	/* pfnGetComment */
1899	cueGetComment,
1900	/* pfnSetComment */
1901	cueSetComment,
1902	/* pfnGetUuid */
1903	cueGetUuid,
1904	/* pfnSetUuid */
1905	cueSetUuid,
1906	/* pfnGetModificationUuid */
1907	cueGetModificationUuid,
1908	/* pfnSetModificationUuid */
1909	cueSetModificationUuid,
1910	/* pfnGetParentUuid */
1911	cueGetParentUuid,
1912	/* pfnSetParentUuid */
1913	cueSetParentUuid,
1914	/* pfnGetParentModificationUuid */
1915	cueGetParentModificationUuid,
1916	/* pfnSetParentModificationUuid */
1917	cueSetParentModificationUuid,
1918	/* pfnDump */
1919	cueDump,
1920	/* pfnGetTimestamp */
1921	NULL,
1922	/* pfnGetParentTimestamp */
1923	NULL,
1924	/* pfnSetParentTimestamp */
1925	NULL,
1926	/* pfnGetParentFilename */
1927	NULL,
1928	/* pfnSetParentFilename */
1929	NULL,
1930	/* pfnComposeLocation */
1931	genericFileComposeLocation,
1932	/* pfnComposeName */
1933	genericFileComposeName,
1934	/* pfnCompact */
1935	NULL,
1936	/* pfnResize */
1937	NULL,
1938	/* pfnRepair */
1939	NULL,
1940	/* pfnTraverseMetadata */
1941	NULL,
1942	/* u32VersionEnd */
1943	VD_IMGBACKEND_VERSION
1944	};

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source: vbox/trunk/src/VBox/Storage/CUE.cpp@ 83733

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