VirtualBox

source: vbox/trunk/src/VBox/Devices/Audio/DrvAudioCommon.cpp@ 72110

Last change on this file since 72110 was 71126, checked in by vboxsync, 7 years ago

Audio/DrvAudioCommon.cpp: Also initialize file handle in DrvAudioHlpFileCreate().
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1/* $Id: DrvAudioCommon.cpp 71126 2018-02-26 14:26:51Z vboxsync $ */
2/** @file
3 * Intermedia audio driver, common routines.
4 *
5 * These are also used in the drivers which are bound to Main, e.g. the VRDE
6 * or the video audio recording drivers.
7 */
8
9/*
10 * Copyright (C) 2006-2018 Oracle Corporation
11 *
12 * This file is part of VirtualBox Open Source Edition (OSE), as
13 * available from http://www.virtualbox.org. This file is free software;
14 * you can redistribute it and/or modify it under the terms of the GNU
15 * General Public License (GPL) as published by the Free Software
16 * Foundation, in version 2 as it comes in the "COPYING" file of the
17 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
18 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
19 */
20
21
22/*********************************************************************************************************************************
23* Header Files *
24*********************************************************************************************************************************/
25#include <iprt/alloc.h>
26#include <iprt/asm-math.h>
27#include <iprt/assert.h>
28#include <iprt/dir.h>
29#include <iprt/file.h>
30#include <iprt/string.h>
31#include <iprt/uuid.h>
32
33#define LOG_GROUP LOG_GROUP_DRV_AUDIO
34#include <VBox/log.h>
35
36#include <VBox/err.h>
37#include <VBox/vmm/pdmdev.h>
38#include <VBox/vmm/pdm.h>
39#include <VBox/vmm/mm.h>
40
41#include <ctype.h>
42#include <stdlib.h>
43
44#include "DrvAudio.h"
45#include "AudioMixBuffer.h"
46
47
48/*********************************************************************************************************************************
49* Structures and Typedefs *
50*********************************************************************************************************************************/
51/**
52 * Structure for building up a .WAV file header.
53 */
54typedef struct AUDIOWAVFILEHDR
55{
56 uint32_t u32RIFF;
57 uint32_t u32Size;
58 uint32_t u32WAVE;
59
60 uint32_t u32Fmt;
61 uint32_t u32Size1;
62 uint16_t u16AudioFormat;
63 uint16_t u16NumChannels;
64 uint32_t u32SampleRate;
65 uint32_t u32ByteRate;
66 uint16_t u16BlockAlign;
67 uint16_t u16BitsPerSample;
68
69 uint32_t u32ID2;
70 uint32_t u32Size2;
71} AUDIOWAVFILEHDR, *PAUDIOWAVFILEHDR;
72AssertCompileSize(AUDIOWAVFILEHDR, 11*4);
73
74/**
75 * Structure for keeeping the internal .WAV file data
76 */
77typedef struct AUDIOWAVFILEDATA
78{
79 /** The file header/footer. */
80 AUDIOWAVFILEHDR Hdr;
81} AUDIOWAVFILEDATA, *PAUDIOWAVFILEDATA;
82
83
84
85
86/**
87 * Retrieves the matching PDMAUDIOFMT for given bits + signing flag.
88 *
89 * @return IPRT status code.
90 * @return PDMAUDIOFMT Resulting audio format or PDMAUDIOFMT_INVALID if invalid.
91 * @param cBits Bits to retrieve audio format for.
92 * @param fSigned Signed flag for bits to retrieve audio format for.
93 */
94PDMAUDIOFMT DrvAudioAudFmtBitsToAudFmt(uint8_t cBits, bool fSigned)
95{
96 if (fSigned)
97 {
98 switch (cBits)
99 {
100 case 8: return PDMAUDIOFMT_S8;
101 case 16: return PDMAUDIOFMT_S16;
102 case 32: return PDMAUDIOFMT_S32;
103 default: break;
104 }
105 }
106 else
107 {
108 switch (cBits)
109 {
110 case 8: return PDMAUDIOFMT_U8;
111 case 16: return PDMAUDIOFMT_U16;
112 case 32: return PDMAUDIOFMT_U32;
113 default: break;
114 }
115 }
116
117 AssertMsgFailed(("Bogus audio bits %RU8\n", cBits));
118 return PDMAUDIOFMT_INVALID;
119}
120
121/**
122 * Clears a sample buffer by the given amount of audio samples.
123 *
124 * @return IPRT status code.
125 * @param pPCMProps PCM properties to use for the buffer to clear.
126 * @param pvBuf Buffer to clear.
127 * @param cbBuf Size (in bytes) of the buffer.
128 * @param cSamples Number of audio samples to clear in the buffer.
129 */
130void DrvAudioHlpClearBuf(const PPDMAUDIOPCMPROPS pPCMProps, void *pvBuf, size_t cbBuf, uint32_t cSamples)
131{
132 AssertPtrReturnVoid(pPCMProps);
133 AssertPtrReturnVoid(pvBuf);
134
135 if (!cbBuf || !cSamples)
136 return;
137
138 Assert(pPCMProps->cBits);
139 size_t cbToClear = cSamples * (pPCMProps->cBits / 8 /* Bytes */);
140 Assert(cbBuf >= cbToClear);
141
142 if (cbBuf < cbToClear)
143 cbToClear = cbBuf;
144
145 Log2Func(("pPCMProps=%p, pvBuf=%p, cSamples=%RU32, fSigned=%RTbool, cBits=%RU8\n",
146 pPCMProps, pvBuf, cSamples, pPCMProps->fSigned, pPCMProps->cBits));
147
148 if (pPCMProps->fSigned)
149 {
150 RT_BZERO(pvBuf, cbToClear);
151 }
152 else
153 {
154 switch (pPCMProps->cBits)
155 {
156 case 8:
157 {
158 memset(pvBuf, 0x80, cbToClear);
159 break;
160 }
161
162 case 16:
163 {
164 uint16_t *p = (uint16_t *)pvBuf;
165 int16_t s = INT16_MAX;
166
167 if (pPCMProps->fSwapEndian)
168 s = RT_BSWAP_U16(s);
169
170 for (uint32_t i = 0; i < cSamples; i++)
171 p[i] = s;
172
173 break;
174 }
175
176 case 32:
177 {
178 uint32_t *p = (uint32_t *)pvBuf;
179 int32_t s = INT32_MAX;
180
181 if (pPCMProps->fSwapEndian)
182 s = RT_BSWAP_U32(s);
183
184 for (uint32_t i = 0; i < cSamples; i++)
185 p[i] = s;
186
187 break;
188 }
189
190 default:
191 {
192 AssertMsgFailed(("Invalid bits: %RU8\n", pPCMProps->cBits));
193 break;
194 }
195 }
196 }
197}
198
199/**
200 * Returns an unique file name for this given audio connector instance.
201 *
202 * @return Allocated file name. Must be free'd using RTStrFree().
203 * @param uInstance Driver / device instance.
204 * @param pszPath Path name of the file to delete. The path must exist.
205 * @param pszSuffix File name suffix to use.
206 */
207char *DrvAudioDbgGetFileNameA(uint8_t uInstance, const char *pszPath, const char *pszSuffix)
208{
209 char szFileName[64];
210 RTStrPrintf(szFileName, sizeof(szFileName), "drvAudio%RU8-%s", uInstance, pszSuffix);
211
212 char szFilePath[RTPATH_MAX];
213 int rc2 = RTStrCopy(szFilePath, sizeof(szFilePath), pszPath);
214 AssertRC(rc2);
215 rc2 = RTPathAppend(szFilePath, sizeof(szFilePath), szFileName);
216 AssertRC(rc2);
217
218 return RTStrDup(szFilePath);
219}
220
221/**
222 * Allocates an audio device.
223 *
224 * @returns Newly allocated audio device, or NULL if failed.
225 * @param cbData How much additional data (in bytes) should be allocated to provide
226 * a (backend) specific area to store additional data.
227 * Optional, can be 0.
228 */
229PPDMAUDIODEVICE DrvAudioHlpDeviceAlloc(size_t cbData)
230{
231 PPDMAUDIODEVICE pDev = (PPDMAUDIODEVICE)RTMemAllocZ(sizeof(PDMAUDIODEVICE));
232 if (!pDev)
233 return NULL;
234
235 if (cbData)
236 {
237 pDev->pvData = RTMemAllocZ(cbData);
238 if (!pDev->pvData)
239 {
240 RTMemFree(pDev);
241 return NULL;
242 }
243 }
244
245 pDev->cbData = cbData;
246
247 pDev->cMaxInputChannels = 0;
248 pDev->cMaxOutputChannels = 0;
249
250 return pDev;
251}
252
253/**
254 * Frees an audio device.
255 *
256 * @param pDev Device to free.
257 */
258void DrvAudioHlpDeviceFree(PPDMAUDIODEVICE pDev)
259{
260 if (!pDev)
261 return;
262
263 Assert(pDev->cRefCount == 0);
264
265 if (pDev->pvData)
266 {
267 Assert(pDev->cbData);
268
269 RTMemFree(pDev->pvData);
270 pDev->pvData = NULL;
271 }
272
273 RTMemFree(pDev);
274 pDev = NULL;
275}
276
277/**
278 * Duplicates an audio device entry.
279 *
280 * @returns Duplicated audio device entry on success, or NULL on failure.
281 * @param pDev Audio device entry to duplicate.
282 * @param fCopyUserData Whether to also copy the user data portion or not.
283 */
284PPDMAUDIODEVICE DrvAudioHlpDeviceDup(const PPDMAUDIODEVICE pDev, bool fCopyUserData)
285{
286 AssertPtrReturn(pDev, NULL);
287
288 PPDMAUDIODEVICE pDevDup = DrvAudioHlpDeviceAlloc(fCopyUserData ? pDev->cbData : 0);
289 if (pDevDup)
290 {
291 memcpy(pDevDup, pDev, sizeof(PDMAUDIODEVICE));
292
293 if ( fCopyUserData
294 && pDevDup->cbData)
295 {
296 memcpy(pDevDup->pvData, pDev->pvData, pDevDup->cbData);
297 }
298 else
299 {
300 pDevDup->cbData = 0;
301 pDevDup->pvData = NULL;
302 }
303 }
304
305 return pDevDup;
306}
307
308/**
309 * Initializes an audio device enumeration structure.
310 *
311 * @returns IPRT status code.
312 * @param pDevEnm Device enumeration to initialize.
313 */
314int DrvAudioHlpDeviceEnumInit(PPDMAUDIODEVICEENUM pDevEnm)
315{
316 AssertPtrReturn(pDevEnm, VERR_INVALID_POINTER);
317
318 RTListInit(&pDevEnm->lstDevices);
319 pDevEnm->cDevices = 0;
320
321 return VINF_SUCCESS;
322}
323
324/**
325 * Frees audio device enumeration data.
326 *
327 * @param pDevEnm Device enumeration to destroy.
328 */
329void DrvAudioHlpDeviceEnumFree(PPDMAUDIODEVICEENUM pDevEnm)
330{
331 if (!pDevEnm)
332 return;
333
334 PPDMAUDIODEVICE pDev, pDevNext;
335 RTListForEachSafe(&pDevEnm->lstDevices, pDev, pDevNext, PDMAUDIODEVICE, Node)
336 {
337 RTListNodeRemove(&pDev->Node);
338
339 DrvAudioHlpDeviceFree(pDev);
340
341 pDevEnm->cDevices--;
342 }
343
344 /* Sanity. */
345 Assert(RTListIsEmpty(&pDevEnm->lstDevices));
346 Assert(pDevEnm->cDevices == 0);
347}
348
349/**
350 * Adds an audio device to a device enumeration.
351 *
352 * @return IPRT status code.
353 * @param pDevEnm Device enumeration to add device to.
354 * @param pDev Device to add. The pointer will be owned by the device enumeration then.
355 */
356int DrvAudioHlpDeviceEnumAdd(PPDMAUDIODEVICEENUM pDevEnm, PPDMAUDIODEVICE pDev)
357{
358 AssertPtrReturn(pDevEnm, VERR_INVALID_POINTER);
359 AssertPtrReturn(pDev, VERR_INVALID_POINTER);
360
361 RTListAppend(&pDevEnm->lstDevices, &pDev->Node);
362 pDevEnm->cDevices++;
363
364 return VINF_SUCCESS;
365}
366
367/**
368 * Duplicates a device enumeration.
369 *
370 * @returns Duplicated device enumeration, or NULL on failure.
371 * Must be free'd with DrvAudioHlpDeviceEnumFree().
372 * @param pDevEnm Device enumeration to duplicate.
373 */
374PPDMAUDIODEVICEENUM DrvAudioHlpDeviceEnumDup(const PPDMAUDIODEVICEENUM pDevEnm)
375{
376 AssertPtrReturn(pDevEnm, NULL);
377
378 PPDMAUDIODEVICEENUM pDevEnmDup = (PPDMAUDIODEVICEENUM)RTMemAlloc(sizeof(PDMAUDIODEVICEENUM));
379 if (!pDevEnmDup)
380 return NULL;
381
382 int rc2 = DrvAudioHlpDeviceEnumInit(pDevEnmDup);
383 AssertRC(rc2);
384
385 PPDMAUDIODEVICE pDev;
386 RTListForEach(&pDevEnm->lstDevices, pDev, PDMAUDIODEVICE, Node)
387 {
388 PPDMAUDIODEVICE pDevDup = DrvAudioHlpDeviceDup(pDev, true /* fCopyUserData */);
389 if (!pDevDup)
390 {
391 rc2 = VERR_NO_MEMORY;
392 break;
393 }
394
395 rc2 = DrvAudioHlpDeviceEnumAdd(pDevEnmDup, pDevDup);
396 if (RT_FAILURE(rc2))
397 {
398 DrvAudioHlpDeviceFree(pDevDup);
399 break;
400 }
401 }
402
403 if (RT_FAILURE(rc2))
404 {
405 DrvAudioHlpDeviceEnumFree(pDevEnmDup);
406 pDevEnmDup = NULL;
407 }
408
409 return pDevEnmDup;
410}
411
412/**
413 * Copies device enumeration entries from the source to the destination enumeration.
414 *
415 * @returns IPRT status code.
416 * @param pDstDevEnm Destination enumeration to store enumeration entries into.
417 * @param pSrcDevEnm Source enumeration to use.
418 * @param enmUsage Which entries to copy. Specify PDMAUDIODIR_ANY to copy all entries.
419 * @param fCopyUserData Whether to also copy the user data portion or not.
420 */
421int DrvAudioHlpDeviceEnumCopyEx(PPDMAUDIODEVICEENUM pDstDevEnm, const PPDMAUDIODEVICEENUM pSrcDevEnm,
422 PDMAUDIODIR enmUsage, bool fCopyUserData)
423{
424 AssertPtrReturn(pDstDevEnm, VERR_INVALID_POINTER);
425 AssertPtrReturn(pSrcDevEnm, VERR_INVALID_POINTER);
426
427 int rc = VINF_SUCCESS;
428
429 PPDMAUDIODEVICE pSrcDev;
430 RTListForEach(&pSrcDevEnm->lstDevices, pSrcDev, PDMAUDIODEVICE, Node)
431 {
432 if ( enmUsage != PDMAUDIODIR_ANY
433 && enmUsage != pSrcDev->enmUsage)
434 {
435 continue;
436 }
437
438 PPDMAUDIODEVICE pDstDev = DrvAudioHlpDeviceDup(pSrcDev, fCopyUserData);
439 if (!pDstDev)
440 {
441 rc = VERR_NO_MEMORY;
442 break;
443 }
444
445 rc = DrvAudioHlpDeviceEnumAdd(pDstDevEnm, pDstDev);
446 if (RT_FAILURE(rc))
447 break;
448 }
449
450 return rc;
451}
452
453/**
454 * Copies all device enumeration entries from the source to the destination enumeration.
455 *
456 * Note: Does *not* copy the user-specific data assigned to a device enumeration entry.
457 * To do so, use DrvAudioHlpDeviceEnumCopyEx().
458 *
459 * @returns IPRT status code.
460 * @param pDstDevEnm Destination enumeration to store enumeration entries into.
461 * @param pSrcDevEnm Source enumeration to use.
462 */
463int DrvAudioHlpDeviceEnumCopy(PPDMAUDIODEVICEENUM pDstDevEnm, const PPDMAUDIODEVICEENUM pSrcDevEnm)
464{
465 return DrvAudioHlpDeviceEnumCopyEx(pDstDevEnm, pSrcDevEnm, PDMAUDIODIR_ANY, false /* fCopyUserData */);
466}
467
468/**
469 * Returns the default device of a given device enumeration.
470 * This assumes that only one default device per usage is set.
471 *
472 * @returns Default device if found, or NULL if none found.
473 * @param pDevEnm Device enumeration to get default device for.
474 * @param enmUsage Usage to get default device for.
475 */
476PPDMAUDIODEVICE DrvAudioHlpDeviceEnumGetDefaultDevice(const PPDMAUDIODEVICEENUM pDevEnm, PDMAUDIODIR enmUsage)
477{
478 AssertPtrReturn(pDevEnm, NULL);
479
480 PPDMAUDIODEVICE pDev;
481 RTListForEach(&pDevEnm->lstDevices, pDev, PDMAUDIODEVICE, Node)
482 {
483 if (enmUsage != PDMAUDIODIR_ANY)
484 {
485 if (enmUsage != pDev->enmUsage) /* Wrong usage? Skip. */
486 continue;
487 }
488
489 if (pDev->fFlags & PDMAUDIODEV_FLAGS_DEFAULT)
490 return pDev;
491 }
492
493 return NULL;
494}
495
496/**
497 * Logs an audio device enumeration.
498 *
499 * @param pszDesc Logging description.
500 * @param pDevEnm Device enumeration to log.
501 */
502void DrvAudioHlpDeviceEnumPrint(const char *pszDesc, const PPDMAUDIODEVICEENUM pDevEnm)
503{
504 AssertPtrReturnVoid(pszDesc);
505 AssertPtrReturnVoid(pDevEnm);
506
507 LogFunc(("%s: %RU16 devices\n", pszDesc, pDevEnm->cDevices));
508
509 PPDMAUDIODEVICE pDev;
510 RTListForEach(&pDevEnm->lstDevices, pDev, PDMAUDIODEVICE, Node)
511 {
512 char *pszFlags = DrvAudioHlpAudDevFlagsToStrA(pDev->fFlags);
513
514 LogFunc(("Device '%s':\n", pDev->szName));
515 LogFunc(("\tUsage = %s\n", DrvAudioHlpAudDirToStr(pDev->enmUsage)));
516 LogFunc(("\tFlags = %s\n", pszFlags ? pszFlags : "<NONE>"));
517 LogFunc(("\tInput channels = %RU8\n", pDev->cMaxInputChannels));
518 LogFunc(("\tOutput channels = %RU8\n", pDev->cMaxOutputChannels));
519 LogFunc(("\tData = %p (%zu bytes)\n", pDev->pvData, pDev->cbData));
520
521 if (pszFlags)
522 RTStrFree(pszFlags);
523 }
524}
525
526/**
527 * Converts an audio direction to a string.
528 *
529 * @returns Stringified audio direction, or "Unknown", if not found.
530 * @param enmDir Audio direction to convert.
531 */
532const char *DrvAudioHlpAudDirToStr(PDMAUDIODIR enmDir)
533{
534 switch (enmDir)
535 {
536 case PDMAUDIODIR_UNKNOWN: return "Unknown";
537 case PDMAUDIODIR_IN: return "Input";
538 case PDMAUDIODIR_OUT: return "Output";
539 case PDMAUDIODIR_ANY: return "Duplex";
540 default: break;
541 }
542
543 AssertMsgFailed(("Invalid audio direction %ld\n", enmDir));
544 return "Unknown";
545}
546
547/**
548 * Converts an audio mixer control to a string.
549 *
550 * @returns Stringified audio mixer control or "Unknown", if not found.
551 * @param enmMixerCtl Audio mixer control to convert.
552 */
553const char *DrvAudioHlpAudMixerCtlToStr(PDMAUDIOMIXERCTL enmMixerCtl)
554{
555 switch (enmMixerCtl)
556 {
557 case PDMAUDIOMIXERCTL_VOLUME_MASTER: return "Master Volume";
558 case PDMAUDIOMIXERCTL_FRONT: return "Front";
559 case PDMAUDIOMIXERCTL_CENTER_LFE: return "Center / LFE";
560 case PDMAUDIOMIXERCTL_REAR: return "Rear";
561 case PDMAUDIOMIXERCTL_LINE_IN: return "Line-In";
562 case PDMAUDIOMIXERCTL_MIC_IN: return "Microphone-In";
563 default: break;
564 }
565
566 AssertMsgFailed(("Invalid mixer control %ld\n", enmMixerCtl));
567 return "Unknown";
568}
569
570/**
571 * Converts an audio device flags to a string.
572 *
573 * @returns Stringified audio flags. Must be free'd with RTStrFree().
574 * NULL if no flags set.
575 * @param fFlags Audio flags to convert.
576 */
577char *DrvAudioHlpAudDevFlagsToStrA(PDMAUDIODEVFLAG fFlags)
578{
579#define APPEND_FLAG_TO_STR(_aFlag) \
580 if (fFlags & PDMAUDIODEV_FLAGS_##_aFlag) \
581 { \
582 if (pszFlags) \
583 { \
584 rc2 = RTStrAAppend(&pszFlags, " "); \
585 if (RT_FAILURE(rc2)) \
586 break; \
587 } \
588 \
589 rc2 = RTStrAAppend(&pszFlags, #_aFlag); \
590 if (RT_FAILURE(rc2)) \
591 break; \
592 } \
593
594 char *pszFlags = NULL;
595 int rc2 = VINF_SUCCESS;
596
597 do
598 {
599 APPEND_FLAG_TO_STR(DEFAULT);
600 APPEND_FLAG_TO_STR(HOTPLUG);
601 APPEND_FLAG_TO_STR(BUGGY);
602 APPEND_FLAG_TO_STR(IGNORE);
603 APPEND_FLAG_TO_STR(LOCKED);
604 APPEND_FLAG_TO_STR(DEAD);
605
606 } while (0);
607
608 if (!pszFlags)
609 rc2 = RTStrAAppend(&pszFlags, "NONE");
610
611 if ( RT_FAILURE(rc2)
612 && pszFlags)
613 {
614 RTStrFree(pszFlags);
615 pszFlags = NULL;
616 }
617
618#undef APPEND_FLAG_TO_STR
619
620 return pszFlags;
621}
622
623/**
624 * Converts a playback destination enumeration to a string.
625 *
626 * @returns Stringified playback destination, or "Unknown", if not found.
627 * @param enmPlaybackDst Playback destination to convert.
628 */
629const char *DrvAudioHlpPlaybackDstToStr(const PDMAUDIOPLAYBACKDEST enmPlaybackDst)
630{
631 switch (enmPlaybackDst)
632 {
633 case PDMAUDIOPLAYBACKDEST_UNKNOWN: return "Unknown";
634 case PDMAUDIOPLAYBACKDEST_FRONT: return "Front";
635 case PDMAUDIOPLAYBACKDEST_CENTER_LFE: return "Center / LFE";
636 case PDMAUDIOPLAYBACKDEST_REAR: return "Rear";
637 default:
638 break;
639 }
640
641 AssertMsgFailed(("Invalid playback destination %ld\n", enmPlaybackDst));
642 return "Unknown";
643}
644
645/**
646 * Converts a recording source enumeration to a string.
647 *
648 * @returns Stringified recording source, or "Unknown", if not found.
649 * @param enmRecSrc Recording source to convert.
650 */
651const char *DrvAudioHlpRecSrcToStr(const PDMAUDIORECSOURCE enmRecSrc)
652{
653 switch (enmRecSrc)
654 {
655 case PDMAUDIORECSOURCE_UNKNOWN: return "Unknown";
656 case PDMAUDIORECSOURCE_MIC: return "Microphone In";
657 case PDMAUDIORECSOURCE_CD: return "CD";
658 case PDMAUDIORECSOURCE_VIDEO: return "Video";
659 case PDMAUDIORECSOURCE_AUX: return "AUX";
660 case PDMAUDIORECSOURCE_LINE: return "Line In";
661 case PDMAUDIORECSOURCE_PHONE: return "Phone";
662 default:
663 break;
664 }
665
666 AssertMsgFailed(("Invalid recording source %ld\n", enmRecSrc));
667 return "Unknown";
668}
669
670/**
671 * Returns wether the given audio format has signed bits or not.
672 *
673 * @return IPRT status code.
674 * @return bool @c true for signed bits, @c false for unsigned.
675 * @param enmFmt Audio format to retrieve value for.
676 */
677bool DrvAudioHlpAudFmtIsSigned(PDMAUDIOFMT enmFmt)
678{
679 switch (enmFmt)
680 {
681 case PDMAUDIOFMT_S8:
682 case PDMAUDIOFMT_S16:
683 case PDMAUDIOFMT_S32:
684 return true;
685
686 case PDMAUDIOFMT_U8:
687 case PDMAUDIOFMT_U16:
688 case PDMAUDIOFMT_U32:
689 return false;
690
691 default:
692 break;
693 }
694
695 AssertMsgFailed(("Bogus audio format %ld\n", enmFmt));
696 return false;
697}
698
699/**
700 * Returns the bits of a given audio format.
701 *
702 * @return IPRT status code.
703 * @return uint8_t Bits of audio format.
704 * @param enmFmt Audio format to retrieve value for.
705 */
706uint8_t DrvAudioHlpAudFmtToBits(PDMAUDIOFMT enmFmt)
707{
708 switch (enmFmt)
709 {
710 case PDMAUDIOFMT_S8:
711 case PDMAUDIOFMT_U8:
712 return 8;
713
714 case PDMAUDIOFMT_U16:
715 case PDMAUDIOFMT_S16:
716 return 16;
717
718 case PDMAUDIOFMT_U32:
719 case PDMAUDIOFMT_S32:
720 return 32;
721
722 default:
723 break;
724 }
725
726 AssertMsgFailed(("Bogus audio format %ld\n", enmFmt));
727 return 0;
728}
729
730/**
731 * Converts an audio format to a string.
732 *
733 * @returns Stringified audio format, or "Unknown", if not found.
734 * @param enmFmt Audio format to convert.
735 */
736const char *DrvAudioHlpAudFmtToStr(PDMAUDIOFMT enmFmt)
737{
738 switch (enmFmt)
739 {
740 case PDMAUDIOFMT_U8:
741 return "U8";
742
743 case PDMAUDIOFMT_U16:
744 return "U16";
745
746 case PDMAUDIOFMT_U32:
747 return "U32";
748
749 case PDMAUDIOFMT_S8:
750 return "S8";
751
752 case PDMAUDIOFMT_S16:
753 return "S16";
754
755 case PDMAUDIOFMT_S32:
756 return "S32";
757
758 default:
759 break;
760 }
761
762 AssertMsgFailed(("Bogus audio format %ld\n", enmFmt));
763 return "Unknown";
764}
765
766/**
767 * Converts a given string to an audio format.
768 *
769 * @returns Audio format for the given string, or PDMAUDIOFMT_INVALID if not found.
770 * @param pszFmt String to convert to an audio format.
771 */
772PDMAUDIOFMT DrvAudioHlpStrToAudFmt(const char *pszFmt)
773{
774 AssertPtrReturn(pszFmt, PDMAUDIOFMT_INVALID);
775
776 if (!RTStrICmp(pszFmt, "u8"))
777 return PDMAUDIOFMT_U8;
778 else if (!RTStrICmp(pszFmt, "u16"))
779 return PDMAUDIOFMT_U16;
780 else if (!RTStrICmp(pszFmt, "u32"))
781 return PDMAUDIOFMT_U32;
782 else if (!RTStrICmp(pszFmt, "s8"))
783 return PDMAUDIOFMT_S8;
784 else if (!RTStrICmp(pszFmt, "s16"))
785 return PDMAUDIOFMT_S16;
786 else if (!RTStrICmp(pszFmt, "s32"))
787 return PDMAUDIOFMT_S32;
788
789 AssertMsgFailed(("Invalid audio format '%s'\n", pszFmt));
790 return PDMAUDIOFMT_INVALID;
791}
792
793/**
794 * Checks whether two given PCM properties are equal.
795 *
796 * @returns @c true if equal, @c false if not.
797 * @param pProps1 First properties to compare.
798 * @param pProps2 Second properties to compare.
799 */
800bool DrvAudioHlpPCMPropsAreEqual(const PPDMAUDIOPCMPROPS pProps1, const PPDMAUDIOPCMPROPS pProps2)
801{
802 AssertPtrReturn(pProps1, false);
803 AssertPtrReturn(pProps2, false);
804
805 if (pProps1 == pProps2) /* If the pointers match, take a shortcut. */
806 return true;
807
808 return pProps1->uHz == pProps2->uHz
809 && pProps1->cChannels == pProps2->cChannels
810 && pProps1->cBits == pProps2->cBits
811 && pProps1->fSigned == pProps2->fSigned
812 && pProps1->fSwapEndian == pProps2->fSwapEndian;
813}
814
815/**
816 * Checks whether given PCM properties are valid or not.
817 *
818 * Returns @c true if properties are valid, @c false if not.
819 * @param pProps PCM properties to check.
820 */
821bool DrvAudioHlpPCMPropsAreValid(const PPDMAUDIOPCMPROPS pProps)
822{
823 AssertPtrReturn(pProps, false);
824
825 /* Minimum 1 channel (mono), maximum 7.1 (= 8) channels. */
826 bool fValid = ( pProps->cChannels >= 1
827 && pProps->cChannels <= 8);
828
829 if (fValid)
830 {
831 switch (pProps->cBits)
832 {
833 case 8:
834 case 16:
835 /** @todo Do we need support for 24-bit samples? */
836 case 32:
837 break;
838 default:
839 fValid = false;
840 break;
841 }
842 }
843
844 if (!fValid)
845 return false;
846
847 fValid &= pProps->uHz > 0;
848 fValid &= pProps->cShift == PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pProps->cBits, pProps->cChannels);
849 fValid &= pProps->fSwapEndian == false; /** @todo Handling Big Endian audio data is not supported yet. */
850
851 return fValid;
852}
853
854/**
855 * Checks whether the given PCM properties are equal with the given
856 * stream configuration.
857 *
858 * @returns @c true if equal, @c false if not.
859 * @param pProps PCM properties to compare.
860 * @param pCfg Stream configuration to compare.
861 */
862bool DrvAudioHlpPCMPropsAreEqual(const PPDMAUDIOPCMPROPS pProps, const PPDMAUDIOSTREAMCFG pCfg)
863{
864 AssertPtrReturn(pProps, false);
865 AssertPtrReturn(pCfg, false);
866
867 return DrvAudioHlpPCMPropsAreEqual(pProps, &pCfg->Props);
868}
869
870/**
871 * Prints PCM properties to the debug log.
872 *
873 * @param pProps Stream configuration to log.
874 */
875void DrvAudioHlpPCMPropsPrint(const PPDMAUDIOPCMPROPS pProps)
876{
877 AssertPtrReturnVoid(pProps);
878
879 Log(("uHz=%RU32, cChannels=%RU8, cBits=%RU8%s",
880 pProps->uHz, pProps->cChannels, pProps->cBits, pProps->fSigned ? "S" : "U"));
881}
882
883/**
884 * Converts PCM properties to a audio stream configuration.
885 *
886 * @return IPRT status code.
887 * @param pProps Pointer to PCM properties to convert.
888 * @param pCfg Pointer to audio stream configuration to store result into.
889 */
890int DrvAudioHlpPCMPropsToStreamCfg(const PPDMAUDIOPCMPROPS pProps, PPDMAUDIOSTREAMCFG pCfg)
891{
892 AssertPtrReturn(pProps, VERR_INVALID_POINTER);
893 AssertPtrReturn(pCfg, VERR_INVALID_POINTER);
894
895 memcpy(&pCfg->Props, pProps, sizeof(PDMAUDIOPCMPROPS));
896 return VINF_SUCCESS;
897}
898
899/**
900 * Checks whether a given stream configuration is valid or not.
901 *
902 * Returns @c true if configuration is valid, @c false if not.
903 * @param pCfg Stream configuration to check.
904 */
905bool DrvAudioHlpStreamCfgIsValid(const PPDMAUDIOSTREAMCFG pCfg)
906{
907 AssertPtrReturn(pCfg, false);
908
909 bool fValid = ( pCfg->enmDir == PDMAUDIODIR_IN
910 || pCfg->enmDir == PDMAUDIODIR_OUT);
911
912 fValid &= ( pCfg->enmLayout == PDMAUDIOSTREAMLAYOUT_NON_INTERLEAVED
913 || pCfg->enmLayout == PDMAUDIOSTREAMLAYOUT_RAW);
914
915 if (fValid)
916 fValid = DrvAudioHlpPCMPropsAreValid(&pCfg->Props);
917
918 return fValid;
919}
920
921/**
922 * Frees an allocated audio stream configuration.
923 *
924 * @param pCfg Audio stream configuration to free.
925 */
926void DrvAudioHlpStreamCfgFree(PPDMAUDIOSTREAMCFG pCfg)
927{
928 if (pCfg)
929 {
930 RTMemFree(pCfg);
931 pCfg = NULL;
932 }
933}
934
935/**
936 * Copies a source stream configuration to a destination stream configuration.
937 *
938 * @returns IPRT status code.
939 * @param pDstCfg Destination stream configuration to copy source to.
940 * @param pSrcCfg Source stream configuration to copy to destination.
941 */
942int DrvAudioHlpStreamCfgCopy(PPDMAUDIOSTREAMCFG pDstCfg, const PPDMAUDIOSTREAMCFG pSrcCfg)
943{
944 AssertPtrReturn(pDstCfg, VERR_INVALID_POINTER);
945 AssertPtrReturn(pSrcCfg, VERR_INVALID_POINTER);
946
947#ifdef VBOX_STRICT
948 if (!DrvAudioHlpStreamCfgIsValid(pSrcCfg))
949 {
950 AssertMsgFailed(("Stream config '%s' (%p) is invalid\n", pSrcCfg->szName, pSrcCfg));
951 return VERR_INVALID_PARAMETER;
952 }
953#endif
954
955 memcpy(pDstCfg, pSrcCfg, sizeof(PDMAUDIOSTREAMCFG));
956
957 return VINF_SUCCESS;
958}
959
960/**
961 * Duplicates an audio stream configuration.
962 * Must be free'd with DrvAudioHlpStreamCfgFree().
963 *
964 * @return Duplicates audio stream configuration on success, or NULL on failure.
965 * @param pCfg Audio stream configuration to duplicate.
966 */
967PPDMAUDIOSTREAMCFG DrvAudioHlpStreamCfgDup(const PPDMAUDIOSTREAMCFG pCfg)
968{
969 AssertPtrReturn(pCfg, NULL);
970
971 PPDMAUDIOSTREAMCFG pDst = (PPDMAUDIOSTREAMCFG)RTMemAllocZ(sizeof(PDMAUDIOSTREAMCFG));
972 if (!pDst)
973 return NULL;
974
975 int rc2 = DrvAudioHlpStreamCfgCopy(pDst, pCfg);
976 if (RT_FAILURE(rc2))
977 {
978 DrvAudioHlpStreamCfgFree(pDst);
979 pDst = NULL;
980 }
981
982 AssertPtr(pDst);
983 return pDst;
984}
985
986/**
987 * Prints an audio stream configuration to the debug log.
988 *
989 * @param pCfg Stream configuration to log.
990 */
991void DrvAudioHlpStreamCfgPrint(const PPDMAUDIOSTREAMCFG pCfg)
992{
993 if (!pCfg)
994 return;
995
996 LogFunc(("szName=%s, enmDir=%RU32 (uHz=%RU32, cBits=%RU8%s, cChannels=%RU8)\n",
997 pCfg->szName, pCfg->enmDir,
998 pCfg->Props.uHz, pCfg->Props.cBits, pCfg->Props.fSigned ? "S" : "U", pCfg->Props.cChannels));
999}
1000
1001/**
1002 * Converts a stream command to a string.
1003 *
1004 * @returns Stringified stream command, or "Unknown", if not found.
1005 * @param enmCmd Stream command to convert.
1006 */
1007const char *DrvAudioHlpStreamCmdToStr(PDMAUDIOSTREAMCMD enmCmd)
1008{
1009 switch (enmCmd)
1010 {
1011 case PDMAUDIOSTREAMCMD_UNKNOWN: return "Unknown";
1012 case PDMAUDIOSTREAMCMD_ENABLE: return "Enable";
1013 case PDMAUDIOSTREAMCMD_DISABLE: return "Disable";
1014 case PDMAUDIOSTREAMCMD_PAUSE: return "Pause";
1015 case PDMAUDIOSTREAMCMD_RESUME: return "Resume";
1016 default: break;
1017 }
1018
1019 AssertMsgFailed(("Invalid stream command %ld\n", enmCmd));
1020 return "Unknown";
1021}
1022
1023/**
1024 * Calculates the audio bit rate of the given bits per sample, the Hz and the number
1025 * of audio channels.
1026 *
1027 * Divide the result by 8 to get the byte rate.
1028 *
1029 * @returns The calculated bit rate.
1030 * @param cBits Number of bits per sample.
1031 * @param uHz Hz (Hertz) rate.
1032 * @param cChannels Number of audio channels.
1033 */
1034uint32_t DrvAudioHlpCalcBitrate(uint8_t cBits, uint32_t uHz, uint8_t cChannels)
1035{
1036 return (cBits * uHz * cChannels);
1037}
1038
1039/**
1040 * Calculates the audio bit rate out of a given audio stream configuration.
1041 *
1042 * Divide the result by 8 to get the byte rate.
1043 *
1044 * @returns The calculated bit rate.
1045 * @param pProps PCM properties to calculate bitrate for.
1046 *
1047 * @remark
1048 */
1049uint32_t DrvAudioHlpCalcBitrate(const PPDMAUDIOPCMPROPS pProps)
1050{
1051 return DrvAudioHlpCalcBitrate(pProps->cBits, pProps->uHz, pProps->cChannels);
1052}
1053
1054/**
1055 * Returns the time (in ms) for given byte amount and PCM properties.
1056 *
1057 * @return uint64_t Calculated time (in ms).
1058 * @param pProps PCM properties to calculate amount of bytes for.
1059 * @param cbBytes Amount of bytes to calculate time for.
1060 */
1061uint64_t DrvAudioHlpBytesToMs(const PPDMAUDIOPCMPROPS pProps, size_t cbBytes)
1062{
1063 AssertPtrReturn(pProps, 0);
1064
1065 if (!cbBytes)
1066 return 0;
1067
1068 const float dbBytesPerMs = ((pProps->cBits / 8) * pProps->cChannels * pProps->uHz) / 1000;
1069 Assert(dbBytesPerMs >= 0.0f);
1070 if (!dbBytesPerMs) /* Prevent division by zero. */
1071 return 0;
1072
1073 return cbBytes / dbBytesPerMs;
1074}
1075
1076/**
1077 * Returns the amount of bytes for a given time (in ms) and PCM properties.
1078 *
1079 * @return uint32_t Calculated amount of bytes.
1080 * @param pProps PCM properties to calculate amount of bytes for.
1081 * @param uMs Time (in ms) to calculate amount of bytes for.
1082 */
1083uint32_t DrvAudioHlpMsToBytes(const PPDMAUDIOPCMPROPS pProps, uint32_t uMs)
1084{
1085 AssertPtrReturn(pProps, 0);
1086
1087 if (!uMs)
1088 return 0;
1089
1090 return float(((pProps->cBits / 8) * pProps->cChannels * pProps->uHz) / 1000) * uMs;
1091}
1092
1093/**
1094 * Sanitizes the file name component so that unsupported characters
1095 * will be replaced by an underscore ("_").
1096 *
1097 * @return IPRT status code.
1098 * @param pszPath Path to sanitize.
1099 * @param cbPath Size (in bytes) of path to sanitize.
1100 */
1101int DrvAudioHlpSanitizeFileName(char *pszPath, size_t cbPath)
1102{
1103 RT_NOREF(cbPath);
1104 int rc = VINF_SUCCESS;
1105#ifdef RT_OS_WINDOWS
1106 /* Filter out characters not allowed on Windows platforms, put in by
1107 RTTimeSpecToString(). */
1108 /** @todo Use something like RTPathSanitize() if available later some time. */
1109 static RTUNICP const s_uszValidRangePairs[] =
1110 {
1111 ' ', ' ',
1112 '(', ')',
1113 '-', '.',
1114 '0', '9',
1115 'A', 'Z',
1116 'a', 'z',
1117 '_', '_',
1118 0xa0, 0xd7af,
1119 '\0'
1120 };
1121 ssize_t cReplaced = RTStrPurgeComplementSet(pszPath, s_uszValidRangePairs, '_' /* Replacement */);
1122 if (cReplaced < 0)
1123 rc = VERR_INVALID_UTF8_ENCODING;
1124#else
1125 RT_NOREF(pszPath);
1126#endif
1127 return rc;
1128}
1129
1130/**
1131 * Constructs an unique file name, based on the given path and the audio file type.
1132 *
1133 * @returns IPRT status code.
1134 * @param pszFile Where to store the constructed file name.
1135 * @param cchFile Size (in characters) of the file name buffer.
1136 * @param pszPath Base path to use.
1137 * @param pszName A name for better identifying the file.
1138 * @param uInstance Device / driver instance which is using this file.
1139 * @param enmType Audio file type to construct file name for.
1140 * @param fFlags File naming flags.
1141 */
1142int DrvAudioHlpGetFileName(char *pszFile, size_t cchFile, const char *pszPath, const char *pszName,
1143 uint32_t uInstance, PDMAUDIOFILETYPE enmType, PDMAUDIOFILENAMEFLAGS fFlags)
1144{
1145 AssertPtrReturn(pszFile, VERR_INVALID_POINTER);
1146 AssertReturn(cchFile, VERR_INVALID_PARAMETER);
1147 AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
1148 AssertPtrReturn(pszName, VERR_INVALID_POINTER);
1149 /** @todo Validate fFlags. */
1150
1151 int rc;
1152
1153 do
1154 {
1155 char szFilePath[RTPATH_MAX + 1];
1156 RTStrPrintf2(szFilePath, sizeof(szFilePath), "%s", pszPath);
1157
1158 /* Create it when necessary. */
1159 if (!RTDirExists(szFilePath))
1160 {
1161 rc = RTDirCreateFullPath(szFilePath, RTFS_UNIX_IRWXU);
1162 if (RT_FAILURE(rc))
1163 break;
1164 }
1165
1166 char szFileName[RTPATH_MAX + 1];
1167 szFileName[0] = '\0';
1168
1169 if (fFlags & PDMAUDIOFILENAME_FLAG_TS)
1170 {
1171 RTTIMESPEC time;
1172 if (!RTTimeSpecToString(RTTimeNow(&time), szFileName, sizeof(szFileName)))
1173 {
1174 rc = VERR_BUFFER_OVERFLOW;
1175 break;
1176 }
1177
1178 rc = DrvAudioHlpSanitizeFileName(szFileName, sizeof(szFileName));
1179 if (RT_FAILURE(rc))
1180 break;
1181
1182 rc = RTStrCat(szFileName, sizeof(szFileName), "-");
1183 if (RT_FAILURE(rc))
1184 break;
1185 }
1186
1187 rc = RTStrCat(szFileName, sizeof(szFileName), pszName);
1188 if (RT_FAILURE(rc))
1189 break;
1190
1191 rc = RTStrCat(szFileName, sizeof(szFileName), "-");
1192 if (RT_FAILURE(rc))
1193 break;
1194
1195 char szInst[16];
1196 RTStrPrintf2(szInst, sizeof(szInst), "%RU32", uInstance);
1197 rc = RTStrCat(szFileName, sizeof(szFileName), szInst);
1198 if (RT_FAILURE(rc))
1199 break;
1200
1201 switch (enmType)
1202 {
1203 case PDMAUDIOFILETYPE_RAW:
1204 rc = RTStrCat(szFileName, sizeof(szFileName), ".pcm");
1205 break;
1206
1207 case PDMAUDIOFILETYPE_WAV:
1208 rc = RTStrCat(szFileName, sizeof(szFileName), ".wav");
1209 break;
1210
1211 default:
1212 AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED);
1213 break;
1214 }
1215
1216 if (RT_FAILURE(rc))
1217 break;
1218
1219 rc = RTPathAppend(szFilePath, sizeof(szFilePath), szFileName);
1220 if (RT_FAILURE(rc))
1221 break;
1222
1223 RTStrPrintf2(pszFile, cchFile, "%s", szFilePath);
1224
1225 } while (0);
1226
1227 LogFlowFuncLeaveRC(rc);
1228 return rc;
1229}
1230
1231/**
1232 * Creates an audio file.
1233 *
1234 * @returns IPRT status code.
1235 * @param enmType Audio file type to open / create.
1236 * @param pszFile File path of file to open or create.
1237 * @param fFlags Audio file flags.
1238 * @param ppFile Where to store the created audio file handle.
1239 * Needs to be destroyed with DrvAudioHlpFileDestroy().
1240 */
1241int DrvAudioHlpFileCreate(PDMAUDIOFILETYPE enmType, const char *pszFile, PDMAUDIOFILEFLAGS fFlags, PPDMAUDIOFILE *ppFile)
1242{
1243 AssertPtrReturn(pszFile, VERR_INVALID_POINTER);
1244 /** @todo Validate fFlags. */
1245
1246 PPDMAUDIOFILE pFile = (PPDMAUDIOFILE)RTMemAlloc(sizeof(PDMAUDIOFILE));
1247 if (!pFile)
1248 return VERR_NO_MEMORY;
1249
1250 int rc = VINF_SUCCESS;
1251
1252 switch (enmType)
1253 {
1254 case PDMAUDIOFILETYPE_RAW:
1255 case PDMAUDIOFILETYPE_WAV:
1256 pFile->enmType = enmType;
1257 break;
1258
1259 default:
1260 rc = VERR_INVALID_PARAMETER;
1261 break;
1262 }
1263
1264 if (RT_SUCCESS(rc))
1265 {
1266 RTStrPrintf(pFile->szName, RT_ELEMENTS(pFile->szName), "%s", pszFile);
1267 pFile->hFile = NIL_RTFILE;
1268 pFile->fFlags = fFlags;
1269 pFile->pvData = NULL;
1270 pFile->cbData = 0;
1271 }
1272
1273 if (RT_FAILURE(rc))
1274 {
1275 RTMemFree(pFile);
1276 pFile = NULL;
1277 }
1278 else
1279 *ppFile = pFile;
1280
1281 return rc;
1282}
1283
1284/**
1285 * Destroys a formerly created audio file.
1286 *
1287 * @param pFile Audio file (object) to destroy.
1288 */
1289void DrvAudioHlpFileDestroy(PPDMAUDIOFILE pFile)
1290{
1291 if (!pFile)
1292 return;
1293
1294 DrvAudioHlpFileClose(pFile);
1295
1296 RTMemFree(pFile);
1297 pFile = NULL;
1298}
1299
1300/**
1301 * Opens or creates an audio file.
1302 *
1303 * @returns IPRT status code.
1304 * @param pFile Pointer to audio file handle to use.
1305 * @param fOpen Open flags.
1306 * Use PDMAUDIOFILE_DEFAULT_OPEN_FLAGS for the default open flags.
1307 * @param pProps PCM properties to use.
1308 */
1309int DrvAudioHlpFileOpen(PPDMAUDIOFILE pFile, uint32_t fOpen, const PPDMAUDIOPCMPROPS pProps)
1310{
1311 AssertPtrReturn(pFile, VERR_INVALID_POINTER);
1312 /** @todo Validate fOpen flags. */
1313 AssertPtrReturn(pProps, VERR_INVALID_POINTER);
1314
1315 int rc;
1316
1317 if (pFile->enmType == PDMAUDIOFILETYPE_RAW)
1318 {
1319 rc = RTFileOpen(&pFile->hFile, pFile->szName, fOpen);
1320 }
1321 else if (pFile->enmType == PDMAUDIOFILETYPE_WAV)
1322 {
1323 Assert(pProps->cChannels);
1324 Assert(pProps->uHz);
1325 Assert(pProps->cBits);
1326
1327 pFile->pvData = (PAUDIOWAVFILEDATA)RTMemAllocZ(sizeof(AUDIOWAVFILEDATA));
1328 if (pFile->pvData)
1329 {
1330 pFile->cbData = sizeof(PAUDIOWAVFILEDATA);
1331
1332 PAUDIOWAVFILEDATA pData = (PAUDIOWAVFILEDATA)pFile->pvData;
1333 AssertPtr(pData);
1334
1335 /* Header. */
1336 pData->Hdr.u32RIFF = AUDIO_MAKE_FOURCC('R','I','F','F');
1337 pData->Hdr.u32Size = 36;
1338 pData->Hdr.u32WAVE = AUDIO_MAKE_FOURCC('W','A','V','E');
1339
1340 pData->Hdr.u32Fmt = AUDIO_MAKE_FOURCC('f','m','t',' ');
1341 pData->Hdr.u32Size1 = 16; /* Means PCM. */
1342 pData->Hdr.u16AudioFormat = 1; /* PCM, linear quantization. */
1343 pData->Hdr.u16NumChannels = pProps->cChannels;
1344 pData->Hdr.u32SampleRate = pProps->uHz;
1345 pData->Hdr.u32ByteRate = DrvAudioHlpCalcBitrate(pProps->cBits, pProps->uHz, pProps->cChannels) / 8;
1346 pData->Hdr.u16BlockAlign = pProps->cChannels * pProps->cBits / 8;
1347 pData->Hdr.u16BitsPerSample = pProps->cBits;
1348
1349 /* Data chunk. */
1350 pData->Hdr.u32ID2 = AUDIO_MAKE_FOURCC('d','a','t','a');
1351 pData->Hdr.u32Size2 = 0;
1352
1353 rc = RTFileOpen(&pFile->hFile, pFile->szName, fOpen);
1354 if (RT_SUCCESS(rc))
1355 {
1356 rc = RTFileWrite(pFile->hFile, &pData->Hdr, sizeof(pData->Hdr), NULL);
1357 if (RT_FAILURE(rc))
1358 {
1359 RTFileClose(pFile->hFile);
1360 pFile->hFile = NIL_RTFILE;
1361 }
1362 }
1363
1364 if (RT_FAILURE(rc))
1365 {
1366 RTMemFree(pFile->pvData);
1367 pFile->pvData = NULL;
1368 pFile->cbData = 0;
1369 }
1370 }
1371 else
1372 rc = VERR_NO_MEMORY;
1373 }
1374 else
1375 rc = VERR_INVALID_PARAMETER;
1376
1377 if (RT_SUCCESS(rc))
1378 {
1379 LogRel2(("Audio: Opened file '%s'\n", pFile->szName));
1380 }
1381 else
1382 LogRel(("Audio: Failed opening file '%s', rc=%Rrc\n", pFile->szName, rc));
1383
1384 return rc;
1385}
1386
1387/**
1388 * Closes an audio file.
1389 *
1390 * @returns IPRT status code.
1391 * @param pFile Audio file handle to close.
1392 */
1393int DrvAudioHlpFileClose(PPDMAUDIOFILE pFile)
1394{
1395 AssertPtrReturn(pFile, VERR_INVALID_POINTER);
1396
1397 size_t cbSize = DrvAudioHlpFileGetDataSize(pFile);
1398
1399 int rc = VINF_SUCCESS;
1400
1401 if (pFile->enmType == PDMAUDIOFILETYPE_RAW)
1402 {
1403 if (RTFileIsValid(pFile->hFile))
1404 rc = RTFileClose(pFile->hFile);
1405 }
1406 else if (pFile->enmType == PDMAUDIOFILETYPE_WAV)
1407 {
1408 if (RTFileIsValid(pFile->hFile))
1409 {
1410 PAUDIOWAVFILEDATA pData = (PAUDIOWAVFILEDATA)pFile->pvData;
1411 if (pData) /* The .WAV file data only is valid when a file actually has been created. */
1412 {
1413 /* Update the header with the current data size. */
1414 RTFileWriteAt(pFile->hFile, 0, &pData->Hdr, sizeof(pData->Hdr), NULL);
1415 }
1416
1417 rc = RTFileClose(pFile->hFile);
1418 }
1419
1420 if (pFile->pvData)
1421 {
1422 RTMemFree(pFile->pvData);
1423 pFile->pvData = NULL;
1424 }
1425 }
1426 else
1427 AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED);
1428
1429 if ( RT_SUCCESS(rc)
1430 && !cbSize
1431 && !(pFile->fFlags & PDMAUDIOFILE_FLAG_KEEP_IF_EMPTY))
1432 {
1433 rc = DrvAudioHlpFileDelete(pFile);
1434 }
1435
1436 pFile->cbData = 0;
1437
1438 if (RT_SUCCESS(rc))
1439 {
1440 pFile->hFile = NIL_RTFILE;
1441 LogRel2(("Audio: Closed file '%s' (%zu bytes)\n", pFile->szName, cbSize));
1442 }
1443 else
1444 LogRel(("Audio: Failed closing file '%s', rc=%Rrc\n", pFile->szName, rc));
1445
1446 return rc;
1447}
1448
1449/**
1450 * Deletes an audio file.
1451 *
1452 * @returns IPRT status code.
1453 * @param pFile Audio file handle to delete.
1454 */
1455int DrvAudioHlpFileDelete(PPDMAUDIOFILE pFile)
1456{
1457 AssertPtrReturn(pFile, VERR_INVALID_POINTER);
1458
1459 int rc = RTFileDelete(pFile->szName);
1460 if (RT_SUCCESS(rc))
1461 {
1462 LogRel2(("Audio: Deleted file '%s'\n", pFile->szName));
1463 }
1464 else if (rc == VERR_FILE_NOT_FOUND) /* Don't bitch if the file is not around (anymore). */
1465 rc = VINF_SUCCESS;
1466
1467 if (RT_FAILURE(rc))
1468 LogRel(("Audio: Failed deleting file '%s', rc=%Rrc\n", pFile->szName, rc));
1469
1470 return rc;
1471}
1472
1473/**
1474 * Returns the raw audio data size of an audio file.
1475 *
1476 * Note: This does *not* include file headers and other data which does
1477 * not belong to the actual PCM audio data.
1478 *
1479 * @returns Size (in bytes) of the raw PCM audio data.
1480 * @param pFile Audio file handle to retrieve the audio data size for.
1481 */
1482size_t DrvAudioHlpFileGetDataSize(PPDMAUDIOFILE pFile)
1483{
1484 AssertPtrReturn(pFile, 0);
1485
1486 size_t cbSize = 0;
1487
1488 if (pFile->enmType == PDMAUDIOFILETYPE_RAW)
1489 {
1490 cbSize = RTFileTell(pFile->hFile);
1491 }
1492 else if (pFile->enmType == PDMAUDIOFILETYPE_WAV)
1493 {
1494 PAUDIOWAVFILEDATA pData = (PAUDIOWAVFILEDATA)pFile->pvData;
1495 if (pData) /* The .WAV file data only is valid when a file actually has been created. */
1496 cbSize = pData->Hdr.u32Size2;
1497 }
1498
1499 return cbSize;
1500}
1501
1502/**
1503 * Returns whether the given audio file is open and in use or not.
1504 *
1505 * @return bool True if open, false if not.
1506 * @param pFile Audio file handle to check open status for.
1507 */
1508bool DrvAudioHlpFileIsOpen(PPDMAUDIOFILE pFile)
1509{
1510 if (!pFile)
1511 return false;
1512
1513 return RTFileIsValid(pFile->hFile);
1514}
1515
1516/**
1517 * Write PCM data to a wave (.WAV) file.
1518 *
1519 * @returns IPRT status code.
1520 * @param pFile Audio file handle to write PCM data to.
1521 * @param pvBuf Audio data to write.
1522 * @param cbBuf Size (in bytes) of audio data to write.
1523 * @param fFlags Additional write flags. Not being used at the moment and must be 0.
1524 */
1525int DrvAudioHlpFileWrite(PPDMAUDIOFILE pFile, const void *pvBuf, size_t cbBuf, uint32_t fFlags)
1526{
1527 AssertPtrReturn(pFile, VERR_INVALID_POINTER);
1528 AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
1529
1530 AssertReturn(fFlags == 0, VERR_INVALID_PARAMETER); /** @todo fFlags are currently not implemented. */
1531
1532 if (!cbBuf)
1533 return VINF_SUCCESS;
1534
1535 AssertReturn(RTFileIsValid(pFile->hFile), VERR_WRONG_ORDER);
1536
1537 int rc;
1538
1539 if (pFile->enmType == PDMAUDIOFILETYPE_RAW)
1540 {
1541 rc = RTFileWrite(pFile->hFile, pvBuf, cbBuf, NULL);
1542 }
1543 else if (pFile->enmType == PDMAUDIOFILETYPE_WAV)
1544 {
1545 PAUDIOWAVFILEDATA pData = (PAUDIOWAVFILEDATA)pFile->pvData;
1546 AssertPtr(pData);
1547
1548 rc = RTFileWrite(pFile->hFile, pvBuf, cbBuf, NULL);
1549 if (RT_SUCCESS(rc))
1550 {
1551 pData->Hdr.u32Size += (uint32_t)cbBuf;
1552 pData->Hdr.u32Size2 += (uint32_t)cbBuf;
1553 }
1554 }
1555 else
1556 rc = VERR_NOT_SUPPORTED;
1557
1558 return rc;
1559}
1560
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