tstAudioMixBuffer.cpp@ 71752

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1	/* $Id: tstAudioMixBuffer.cpp 71752 2018-04-09 00:53:45Z vboxsync $ */
2	/** @file
3	* Audio testcase - Mixing buffer.
4	*/
5
6	/*
7	* Copyright (C) 2014-2018 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	#include <iprt/err.h>
23	#include <iprt/initterm.h>
24	#include <iprt/mem.h>
25	#include <iprt/rand.h>
26	#include <iprt/stream.h>
27	#include <iprt/string.h>
28	#include <iprt/test.h>
29
30
31	#include "../AudioMixBuffer.h"
32	#include "../DrvAudio.h"
33
34
35	/*********************************************************************************************************************************
36	* Structures and Typedefs *
37	*********************************************************************************************************************************/
38
39	static int tstSingle(RTTEST hTest)
40	{
41	RTTestSubF(hTest, "Single buffer");
42
43	/* 44100Hz, 2 Channels, S16 */
44	PDMAUDIOPCMPROPS config = PDMAUDIOPCMPROPS_INITIALIZOR(
45	16, /* Bits */
46	true, /* Signed */
47	2, /* Channels */
48	44100, /* Hz */
49	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(16 /* Bits /, 2 / Channels /), / Shift */
50	false /* Swap Endian */
51	);
52
53	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&config));
54
55	uint32_t cBufSize = _1K;
56
57	/*
58	* General stuff.
59	*/
60	PDMAUDIOMIXBUF mb;
61	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&mb, "Single", &config, cBufSize));
62	RTTESTI_CHECK(AudioMixBufSize(&mb) == cBufSize);
63	RTTESTI_CHECK(AUDIOMIXBUF_B2F(&mb, AudioMixBufSizeBytes(&mb)) == cBufSize);
64	RTTESTI_CHECK(AUDIOMIXBUF_F2B(&mb, AudioMixBufSize(&mb)) == AudioMixBufSizeBytes(&mb));
65	RTTESTI_CHECK(AudioMixBufFree(&mb) == cBufSize);
66	RTTESTI_CHECK(AUDIOMIXBUF_F2B(&mb, AudioMixBufFree(&mb)) == AudioMixBufFreeBytes(&mb));
67
68	/*
69	* Absolute writes.
70	*/
71	uint32_t cFramesRead = 0, cFramesWritten = 0, cFramesWrittenAbs = 0;
72	int8_t aFrames8 [2] = { 0x12, 0x34 };
73	int16_t aFrames16[2] = { 0xAA, 0xBB };
74	int32_t aFrames32[2] = { 0xCC, 0xDD };
75
76	RTTESTI_CHECK_RC_OK(AudioMixBufWriteAt(&mb, 0 /* Offset */, &aFrames8, sizeof(aFrames8), &cFramesWritten));
77	RTTESTI_CHECK(cFramesWritten == 0 /* Frames */);
78	RTTESTI_CHECK(AudioMixBufUsed(&mb) == 0);
79
80	RTTESTI_CHECK_RC_OK(AudioMixBufWriteAt(&mb, 0 /* Offset */, &aFrames16, sizeof(aFrames16), &cFramesWritten));
81	RTTESTI_CHECK(cFramesWritten == 1 /* Frames */);
82	RTTESTI_CHECK(AudioMixBufUsed(&mb) == 1);
83
84	RTTESTI_CHECK_RC_OK(AudioMixBufWriteAt(&mb, 2 /* Offset */, &aFrames32, sizeof(aFrames32), &cFramesWritten));
85	RTTESTI_CHECK(cFramesWritten == 2 /* Frames */);
86	RTTESTI_CHECK(AudioMixBufUsed(&mb) == 2);
87
88	/* Beyond buffer. */
89	RTTESTI_CHECK_RC(AudioMixBufWriteAt(&mb, AudioMixBufSize(&mb) + 1, &aFrames16, sizeof(aFrames16),
90	&cFramesWritten), VERR_BUFFER_OVERFLOW);
91
92	/* Offset wrap-around: When writing as much (or more) frames the mixing buffer can hold. */
93	uint32_t cbSamples = cBufSize * sizeof(int16_t) * 2 /* Channels */;
94	RTTESTI_CHECK(cbSamples);
95	uint16_t paSamples = (uint16_t )RTMemAlloc(cbSamples);
96	RTTESTI_CHECK(paSamples);
97	RTTESTI_CHECK_RC_OK(AudioMixBufWriteAt(&mb, 0 /* Offset */, paSamples, cbSamples, &cFramesWritten));
98	RTTESTI_CHECK(cFramesWritten == cBufSize /* Frames */);
99	RTTESTI_CHECK(AudioMixBufUsed(&mb) == cBufSize);
100	RTTESTI_CHECK(AudioMixBufReadPos(&mb) == 0);
101	RTTESTI_CHECK(AudioMixBufWritePos(&mb) == 0);
102	RTMemFree(paSamples);
103	cbSamples = 0;
104
105	/*
106	* Circular writes.
107	*/
108	AudioMixBufReset(&mb);
109
110	RTTESTI_CHECK_RC_OK(AudioMixBufWriteAt(&mb, 2 /* Offset */, &aFrames32, sizeof(aFrames32), &cFramesWritten));
111	RTTESTI_CHECK(cFramesWritten == 2 /* Frames */);
112	RTTESTI_CHECK(AudioMixBufUsed(&mb) == 2);
113
114	cFramesWrittenAbs = AudioMixBufUsed(&mb);
115
116	uint32_t cToWrite = AudioMixBufSize(&mb) - cFramesWrittenAbs - 1; /* -1 as padding plus -2 frames for above. */
117	for (uint32_t i = 0; i < cToWrite; i++)
118	{
119	RTTESTI_CHECK_RC_OK(AudioMixBufWriteCirc(&mb, &aFrames16, sizeof(aFrames16), &cFramesWritten));
120	RTTESTI_CHECK(cFramesWritten == 1);
121	}
122	RTTESTI_CHECK(!AudioMixBufIsEmpty(&mb));
123	RTTESTI_CHECK(AudioMixBufFree(&mb) == 1);
124	RTTESTI_CHECK(AudioMixBufFreeBytes(&mb) == AUDIOMIXBUF_F2B(&mb, 1U));
125	RTTESTI_CHECK(AudioMixBufUsed(&mb) == cToWrite + cFramesWrittenAbs /* + last absolute write */);
126
127	RTTESTI_CHECK_RC_OK(AudioMixBufWriteCirc(&mb, &aFrames16, sizeof(aFrames16), &cFramesWritten));
128	RTTESTI_CHECK(cFramesWritten == 1);
129	RTTESTI_CHECK(AudioMixBufFree(&mb) == 0);
130	RTTESTI_CHECK(AudioMixBufFreeBytes(&mb) == AUDIOMIXBUF_F2B(&mb, 0U));
131	RTTESTI_CHECK(AudioMixBufUsed(&mb) == cBufSize);
132
133	/* Circular reads. */
134	uint32_t cToRead = AudioMixBufSize(&mb) - cFramesWrittenAbs - 1;
135	for (uint32_t i = 0; i < cToRead; i++)
136	{
137	RTTESTI_CHECK_RC_OK(AudioMixBufAcquireReadBlock(&mb, &aFrames16, sizeof(aFrames16), &cFramesRead));
138	RTTESTI_CHECK(cFramesRead == 1);
139	AudioMixBufReleaseReadBlock(&mb, cFramesRead);
140	AudioMixBufFinish(&mb, cFramesRead);
141	}
142	RTTESTI_CHECK(!AudioMixBufIsEmpty(&mb));
143	RTTESTI_CHECK(AudioMixBufFree(&mb) == AudioMixBufSize(&mb) - cFramesWrittenAbs - 1);
144	RTTESTI_CHECK(AudioMixBufFreeBytes(&mb) == AUDIOMIXBUF_F2B(&mb, cBufSize - cFramesWrittenAbs - 1));
145	RTTESTI_CHECK(AudioMixBufUsed(&mb) == cBufSize - cToRead);
146
147	RTTESTI_CHECK_RC_OK(AudioMixBufAcquireReadBlock(&mb, &aFrames16, sizeof(aFrames16), &cFramesRead));
148	RTTESTI_CHECK(cFramesRead == 1);
149	AudioMixBufReleaseReadBlock(&mb, cFramesRead);
150	AudioMixBufFinish(&mb, cFramesRead);
151	RTTESTI_CHECK(AudioMixBufFree(&mb) == cBufSize - cFramesWrittenAbs);
152	RTTESTI_CHECK(AudioMixBufFreeBytes(&mb) == AUDIOMIXBUF_F2B(&mb, cBufSize - cFramesWrittenAbs));
153	RTTESTI_CHECK(AudioMixBufUsed(&mb) == cFramesWrittenAbs);
154
155	AudioMixBufDestroy(&mb);
156
157	return RTTestSubErrorCount(hTest) ? VERR_GENERAL_FAILURE : VINF_SUCCESS;
158	}
159
160	static int tstParentChild(RTTEST hTest)
161	{
162	uint32_t cParentBufSize = RTRandU32Ex(_1K /* Min /, _16K / Max /); / Enough room for random sizes */
163
164	/* 44100Hz, 2 Channels, S16 */
165	PDMAUDIOPCMPROPS cfg_p = PDMAUDIOPCMPROPS_INITIALIZOR(
166	16, /* Bits */
167	true, /* Signed */
168	2, /* Channels */
169	44100, /* Hz */
170	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(16 /* Bits /, 2 / Channels /), / Shift */
171	false /* Swap Endian */
172	);
173
174	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg_p));
175
176	PDMAUDIOMIXBUF parent;
177	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&parent, "Parent", &cfg_p, cParentBufSize));
178
179	/* 22050Hz, 2 Channels, S16 */
180	PDMAUDIOPCMPROPS cfg_c1 = PDMAUDIOPCMPROPS_INITIALIZOR(/* Upmixing to parent */
181	16, /* Bits */
182	true, /* Signed */
183	2, /* Channels */
184	22050, /* Hz */
185	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(16 /* Bits /, 2 / Channels /), / Shift */
186	false /* Swap Endian */
187	);
188
189	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg_c1));
190
191	uint32_t cFrames = 16;
192	uint32_t cChildBufSize = RTRandU32Ex(cFrames /* Min /, 64 / Max */);
193
194	PDMAUDIOMIXBUF child1;
195	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&child1, "Child1", &cfg_c1, cChildBufSize));
196	RTTESTI_CHECK_RC_OK(AudioMixBufLinkTo(&child1, &parent));
197
198	/* 48000Hz, 2 Channels, S16 */
199	PDMAUDIOPCMPROPS cfg_c2 = PDMAUDIOPCMPROPS_INITIALIZOR(/* Downmixing to parent */
200	16, /* Bits */
201	true, /* Signed */
202	2, /* Channels */
203	48000, /* Hz */
204	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(16 /* Bits /, 2 / Channels /), / Shift */
205	false /* Swap Endian */
206	);
207
208	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg_c2));
209
210	PDMAUDIOMIXBUF child2;
211	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&child2, "Child2", &cfg_c2, cChildBufSize));
212	RTTESTI_CHECK_RC_OK(AudioMixBufLinkTo(&child2, &parent));
213
214	/*
215	* Writing + mixing from child/children -> parent, sequential.
216	*/
217	uint32_t cbBuf = _1K;
218	char pvBuf[_1K];
219	int16_t aFrames16[32] = { 0xAA, 0xBB };
220	uint32_t cFramesRead, cFramesWritten, cFramesMixed;
221
222	uint32_t cFramesChild1 = cFrames;
223	uint32_t cFramesChild2 = cFrames;
224
225	uint32_t t = RTRandU32() % 32;
226
227	RTTestPrintf(hTest, RTTESTLVL_DEBUG,
228	"cParentBufSize=%RU32, cChildBufSize=%RU32, %RU32 frames -> %RU32 iterations total\n",
229	cParentBufSize, cChildBufSize, cFrames, t);
230
231	/*
232	* Using AudioMixBufWriteAt for writing to children.
233	*/
234	RTTestSubF(hTest, "2 Children -> Parent (AudioMixBufWriteAt)");
235
236	uint32_t cChildrenSamplesMixedTotal = 0;
237
238	for (uint32_t i = 0; i < t; i++)
239	{
240	RTTestPrintf(hTest, RTTESTLVL_DEBUG, "i=%RU32\n", i);
241
242	uint32_t cChild1Writes = RTRandU32() % 8;
243
244	for (uint32_t c1 = 0; c1 < cChild1Writes; c1++)
245	{
246	/* Child 1. */
247	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufWriteAt(&child1, 0, &aFrames16, sizeof(aFrames16), &cFramesWritten));
248	RTTESTI_CHECK_MSG_BREAK(cFramesWritten == cFramesChild1, ("Child1: Expected %RU32 written frames, got %RU32\n", cFramesChild1, cFramesWritten));
249	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufMixToParent(&child1, cFramesWritten, &cFramesMixed));
250
251	cChildrenSamplesMixedTotal += cFramesMixed;
252
253	RTTESTI_CHECK_MSG_BREAK(cFramesWritten == cFramesMixed, ("Child1: Expected %RU32 mixed frames, got %RU32\n", cFramesWritten, cFramesMixed));
254	RTTESTI_CHECK_MSG_BREAK(AudioMixBufUsed(&child1) == 0, ("Child1: Expected %RU32 used frames, got %RU32\n", 0, AudioMixBufUsed(&child1)));
255	}
256
257	uint32_t cChild2Writes = RTRandU32() % 8;
258
259	for (uint32_t c2 = 0; c2 < cChild2Writes; c2++)
260	{
261	/* Child 2. */
262	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufWriteAt(&child2, 0, &aFrames16, sizeof(aFrames16), &cFramesWritten));
263	RTTESTI_CHECK_MSG_BREAK(cFramesWritten == cFramesChild2, ("Child2: Expected %RU32 written frames, got %RU32\n", cFramesChild2, cFramesWritten));
264	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufMixToParent(&child2, cFramesWritten, &cFramesMixed));
265
266	cChildrenSamplesMixedTotal += cFramesMixed;
267
268	RTTESTI_CHECK_MSG_BREAK(cFramesWritten == cFramesMixed, ("Child2: Expected %RU32 mixed frames, got %RU32\n", cFramesWritten, cFramesMixed));
269	RTTESTI_CHECK_MSG_BREAK(AudioMixBufUsed(&child2) == 0, ("Child2: Expected %RU32 used frames, got %RU32\n", 0, AudioMixBufUsed(&child2)));
270	}
271
272	/*
273	* Read out all frames from the parent buffer and also mark the just-read frames as finished
274	* so that both connected children buffers can keep track of their stuff.
275	*/
276	uint32_t cParentSamples = AudioMixBufUsed(&parent);
277	while (cParentSamples)
278	{
279	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufAcquireReadBlock(&parent, pvBuf, cbBuf, &cFramesRead));
280	if (!cFramesRead)
281	break;
282
283	AudioMixBufReleaseReadBlock(&parent, cFramesRead);
284	AudioMixBufFinish(&parent, cFramesRead);
285
286	RTTESTI_CHECK(cParentSamples >= cFramesRead);
287	cParentSamples -= cFramesRead;
288	}
289
290	RTTESTI_CHECK(cParentSamples == 0);
291	}
292
293	RTTESTI_CHECK(AudioMixBufUsed(&parent) == 0);
294	RTTESTI_CHECK(AudioMixBufLive(&child1) == 0);
295	RTTESTI_CHECK(AudioMixBufLive(&child2) == 0);
296
297	AudioMixBufDestroy(&parent);
298	AudioMixBufDestroy(&child1);
299	AudioMixBufDestroy(&child2);
300
301	return RTTestSubErrorCount(hTest) ? VERR_GENERAL_FAILURE : VINF_SUCCESS;
302	}
303
304	/* Test 8-bit sample conversion (8-bit -> internal -> 8-bit). */
305	static int tstConversion8(RTTEST hTest)
306	{
307	unsigned i;
308	uint32_t cBufSize = 256;
309
310	RTTestSubF(hTest, "Sample conversion (U8)");
311
312	/* 44100Hz, 1 Channel, U8 */
313	PDMAUDIOPCMPROPS cfg_p = PDMAUDIOPCMPROPS_INITIALIZOR(
314	8, /* Bits */
315	false, /* Signed */
316	1, /* Channels */
317	44100, /* Hz */
318	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(8 /* Bits /, 1 / Channels /), / Shift */
319	false /* Swap Endian */
320	);
321
322	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg_p));
323
324	PDMAUDIOMIXBUF parent;
325	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&parent, "Parent", &cfg_p, cBufSize));
326
327	/* Child uses half the sample rate; that ensures the mixing engine can't
328	* take shortcuts and performs conversion. Because conversion to double
329	* the sample rate effectively inserts one additional sample between every
330	* two source frames, N source frames will be converted to N * 2 - 1
331	* frames. However, the last source sample will be saved for later
332	* interpolation and not immediately output.
333	*/
334
335	/* 22050Hz, 1 Channel, U8 */
336	PDMAUDIOPCMPROPS cfg_c = PDMAUDIOPCMPROPS_INITIALIZOR( /* Upmixing to parent */
337	8, /* Bits */
338	false, /* Signed */
339	1, /* Channels */
340	22050, /* Hz */
341	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(8 /* Bits /, 1 / Channels /), / Shift */
342	false /* Swap Endian */
343	);
344
345	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg_c));
346
347	PDMAUDIOMIXBUF child;
348	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&child, "Child", &cfg_c, cBufSize));
349	RTTESTI_CHECK_RC_OK(AudioMixBufLinkTo(&child, &parent));
350
351	/* 8-bit unsigned frames. Often used with SB16 device. */
352	uint8_t aFrames8U[16] = { 0xAA, 0xBB, 0, 1, 43, 125, 126, 127,
353	128, 129, 130, 131, 132, UINT8_MAX - 1, UINT8_MAX, 0 };
354
355	/*
356	* Writing + mixing from child -> parent, sequential.
357	*/
358	uint32_t cbBuf = 256;
359	char achBuf[256];
360	uint32_t cFramesRead, cFramesWritten, cFramesMixed;
361
362	uint32_t cFramesChild = 16;
363	uint32_t cFramesParent = cFramesChild * 2 - 2;
364	uint32_t cFramesTotalRead = 0;
365
366	/** 8-bit unsigned samples **/
367	RTTestPrintf(hTest, RTTESTLVL_DEBUG, "Conversion test %uHz %uch 8-bit\n", cfg_c.uHz, cfg_c.cChannels);
368	RTTESTI_CHECK_RC_OK(AudioMixBufWriteCirc(&child, &aFrames8U, sizeof(aFrames8U), &cFramesWritten));
369	RTTESTI_CHECK_MSG(cFramesWritten == cFramesChild, ("Child: Expected %RU32 written frames, got %RU32\n", cFramesChild, cFramesWritten));
370	RTTESTI_CHECK_RC_OK(AudioMixBufMixToParent(&child, cFramesWritten, &cFramesMixed));
371	uint32_t cFrames = AudioMixBufUsed(&parent);
372	RTTESTI_CHECK_MSG(AudioMixBufLive(&child) == cFrames, ("Child: Expected %RU32 mixed frames, got %RU32\n", AudioMixBufLive(&child), cFrames));
373
374	RTTESTI_CHECK(AudioMixBufUsed(&parent) == AudioMixBufLive(&child));
375
376	for (;;)
377	{
378	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufAcquireReadBlock(&parent, achBuf, cbBuf, &cFramesRead));
379	if (!cFramesRead)
380	break;
381	cFramesTotalRead += cFramesRead;
382	AudioMixBufReleaseReadBlock(&parent, cFramesRead);
383	AudioMixBufFinish(&parent, cFramesRead);
384	}
385
386	RTTESTI_CHECK_MSG(cFramesTotalRead == cFramesParent, ("Parent: Expected %RU32 mixed frames, got %RU32\n", cFramesParent, cFramesTotalRead));
387
388	/* Check that the frames came out unharmed. Every other sample is interpolated and we ignore it. */
389	/* NB: This also checks that the default volume setting is 0dB attenuation. */
390	uint8_t *pSrc8 = &aFrames8U[0];
391	uint8_t pDst8 = (uint8_t )achBuf;
392
393	for (i = 0; i < cFramesChild - 1; ++i)
394	{
395	RTTESTI_CHECK_MSG(pSrc8 == pDst8, ("index %u: Dst=%d, Src=%d\n", i, pDst8, pSrc8));
396	pSrc8 += 1;
397	pDst8 += 2;
398	}
399
400	RTTESTI_CHECK(AudioMixBufUsed(&parent) == 0);
401	RTTESTI_CHECK(AudioMixBufLive(&child) == 0);
402
403	AudioMixBufDestroy(&parent);
404	AudioMixBufDestroy(&child);
405
406	return RTTestSubErrorCount(hTest) ? VERR_GENERAL_FAILURE : VINF_SUCCESS;
407	}
408
409	/* Test 16-bit sample conversion (16-bit -> internal -> 16-bit). */
410	static int tstConversion16(RTTEST hTest)
411	{
412	unsigned i;
413	uint32_t cBufSize = 256;
414
415	RTTestSubF(hTest, "Sample conversion (S16)");
416
417	/* 44100Hz, 1 Channel, S16 */
418	PDMAUDIOPCMPROPS cfg_p = PDMAUDIOPCMPROPS_INITIALIZOR(
419	16, /* Bits */
420	true, /* Signed */
421	1, /* Channels */
422	44100, /* Hz */
423	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(16 /* Bits /, 1 / Channels /), / Shift */
424	false /* Swap Endian */
425	);
426
427	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg_p));
428
429	PDMAUDIOMIXBUF parent;
430	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&parent, "Parent", &cfg_p, cBufSize));
431
432	/* 22050Hz, 1 Channel, S16 */
433	PDMAUDIOPCMPROPS cfg_c = PDMAUDIOPCMPROPS_INITIALIZOR( /* Upmixing to parent */
434	16, /* Bits */
435	true, /* Signed */
436	1, /* Channels */
437	22050, /* Hz */
438	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(16 /* Bits /, 1 / Channels /), / Shift */
439	false /* Swap Endian */
440	);
441
442	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg_c));
443
444	PDMAUDIOMIXBUF child;
445	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&child, "Child", &cfg_c, cBufSize));
446	RTTESTI_CHECK_RC_OK(AudioMixBufLinkTo(&child, &parent));
447
448	/* 16-bit signed. More or less exclusively used as output, and usually as input, too. */
449	int16_t aFrames16S[16] = { 0xAA, 0xBB, INT16_MIN, INT16_MIN + 1, INT16_MIN / 2, -3, -2, -1,
450	0, 1, 2, 3, INT16_MAX / 2, INT16_MAX - 1, INT16_MAX, 0 };
451
452	/*
453	* Writing + mixing from child -> parent, sequential.
454	*/
455	uint32_t cbBuf = 256;
456	char achBuf[256];
457	uint32_t cFramesRead, cFramesWritten, cFramesMixed;
458
459	uint32_t cFramesChild = 16;
460	uint32_t cFramesParent = cFramesChild * 2 - 2;
461	uint32_t cFramesTotalRead = 0;
462
463	/** 16-bit signed samples **/
464	RTTestPrintf(hTest, RTTESTLVL_DEBUG, "Conversion test %uHz %uch 16-bit\n", cfg_c.uHz, cfg_c.cChannels);
465	RTTESTI_CHECK_RC_OK(AudioMixBufWriteCirc(&child, &aFrames16S, sizeof(aFrames16S), &cFramesWritten));
466	RTTESTI_CHECK_MSG(cFramesWritten == cFramesChild, ("Child: Expected %RU32 written frames, got %RU32\n", cFramesChild, cFramesWritten));
467	RTTESTI_CHECK_RC_OK(AudioMixBufMixToParent(&child, cFramesWritten, &cFramesMixed));
468	uint32_t cFrames = AudioMixBufUsed(&parent);
469	RTTESTI_CHECK_MSG(AudioMixBufLive(&child) == cFrames, ("Child: Expected %RU32 mixed frames, got %RU32\n", AudioMixBufLive(&child), cFrames));
470
471	RTTESTI_CHECK(AudioMixBufUsed(&parent) == AudioMixBufLive(&child));
472
473	for (;;)
474	{
475	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufAcquireReadBlock(&parent, achBuf, cbBuf, &cFramesRead));
476	if (!cFramesRead)
477	break;
478	cFramesTotalRead += cFramesRead;
479	AudioMixBufReleaseReadBlock(&parent, cFramesRead);
480	AudioMixBufFinish(&parent, cFramesRead);
481	}
482	RTTESTI_CHECK_MSG(cFramesTotalRead == cFramesParent, ("Parent: Expected %RU32 mixed frames, got %RU32\n", cFramesParent, cFramesTotalRead));
483
484	/* Check that the frames came out unharmed. Every other sample is interpolated and we ignore it. */
485	/* NB: This also checks that the default volume setting is 0dB attenuation. */
486	int16_t *pSrc16 = &aFrames16S[0];
487	int16_t pDst16 = (int16_t )achBuf;
488
489	for (i = 0; i < cFramesChild - 1; ++i)
490	{
491	RTTESTI_CHECK_MSG(pSrc16 == pDst16, ("index %u: Dst=%d, Src=%d\n", i, pDst16, pSrc16));
492	pSrc16 += 1;
493	pDst16 += 2;
494	}
495
496	RTTESTI_CHECK(AudioMixBufUsed(&parent) == 0);
497	RTTESTI_CHECK(AudioMixBufLive(&child) == 0);
498
499	AudioMixBufDestroy(&parent);
500	AudioMixBufDestroy(&child);
501
502	return RTTestSubErrorCount(hTest) ? VERR_GENERAL_FAILURE : VINF_SUCCESS;
503	}
504
505	/* Test volume control. */
506	static int tstVolume(RTTEST hTest)
507	{
508	unsigned i;
509	uint32_t cBufSize = 256;
510
511	RTTestSubF(hTest, "Volume control");
512
513	/* Same for parent/child. */
514	/* 44100Hz, 2 Channels, S16 */
515	PDMAUDIOPCMPROPS cfg = PDMAUDIOPCMPROPS_INITIALIZOR(
516	16, /* Bits */
517	true, /* Signed */
518	2, /* Channels */
519	44100, /* Hz */
520	PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(16 /* Bits /, 2 / Channels /), / Shift */
521	false /* Swap Endian */
522	);
523
524	RTTESTI_CHECK(DrvAudioHlpPCMPropsAreValid(&cfg));
525
526	PDMAUDIOVOLUME vol = { false, 0, 0 }; /* Not muted. */
527	PDMAUDIOMIXBUF parent;
528	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&parent, "Parent", &cfg, cBufSize));
529
530	PDMAUDIOMIXBUF child;
531	RTTESTI_CHECK_RC_OK(AudioMixBufInit(&child, "Child", &cfg, cBufSize));
532	RTTESTI_CHECK_RC_OK(AudioMixBufLinkTo(&child, &parent));
533
534	/* A few 16-bit signed samples. */
535	int16_t aFrames16S[16] = { INT16_MIN, INT16_MIN + 1, -128, -64, -4, -1, 0, 1,
536	2, 255, 256, INT16_MAX / 2, INT16_MAX - 2, INT16_MAX - 1, INT16_MAX, 0 };
537
538	/*
539	* Writing + mixing from child -> parent.
540	*/
541	uint32_t cbBuf = 256;
542	char achBuf[256];
543	uint32_t cFramesRead, cFramesWritten, cFramesMixed;
544
545	uint32_t cFramesChild = 8;
546	uint32_t cFramesParent = cFramesChild;
547	uint32_t cFramesTotalRead;
548	int16_t *pSrc16;
549	int16_t *pDst16;
550
551	/** Volume control test **/
552	RTTestPrintf(hTest, RTTESTLVL_DEBUG, "Volume control test %uHz %uch \n", cfg.uHz, cfg.cChannels);
553
554	/* 1) Full volume/0dB attenuation (255). */
555	vol.uLeft = vol.uRight = 255;
556	AudioMixBufSetVolume(&child, &vol);
557
558	RTTESTI_CHECK_RC_OK(AudioMixBufWriteCirc(&child, &aFrames16S, sizeof(aFrames16S), &cFramesWritten));
559	RTTESTI_CHECK_MSG(cFramesWritten == cFramesChild, ("Child: Expected %RU32 written frames, got %RU32\n", cFramesChild, cFramesWritten));
560	RTTESTI_CHECK_RC_OK(AudioMixBufMixToParent(&child, cFramesWritten, &cFramesMixed));
561
562	cFramesTotalRead = 0;
563	for (;;)
564	{
565	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufAcquireReadBlock(&parent, achBuf, cbBuf, &cFramesRead));
566	if (!cFramesRead)
567	break;
568	cFramesTotalRead += cFramesRead;
569	AudioMixBufReleaseReadBlock(&parent, cFramesRead);
570	AudioMixBufFinish(&parent, cFramesRead);
571	}
572	RTTESTI_CHECK_MSG(cFramesTotalRead == cFramesParent, ("Parent: Expected %RU32 mixed frames, got %RU32\n", cFramesParent, cFramesTotalRead));
573
574	/* Check that at 0dB the frames came out unharmed. */
575	pSrc16 = &aFrames16S[0];
576	pDst16 = (int16_t *)achBuf;
577
578	for (i = 0; i < cFramesParent * 2 /* stereo */; ++i)
579	{
580	RTTESTI_CHECK_MSG(pSrc16 == pDst16, ("index %u: Dst=%d, Src=%d\n", i, pDst16, pSrc16));
581	++pSrc16;
582	++pDst16;
583	}
584	AudioMixBufReset(&child);
585
586	/* 2) Half volume/-6dB attenuation (16 steps down). */
587	vol.uLeft = vol.uRight = 255 - 16;
588	AudioMixBufSetVolume(&child, &vol);
589
590	RTTESTI_CHECK_RC_OK(AudioMixBufWriteCirc(&child, &aFrames16S, sizeof(aFrames16S), &cFramesWritten));
591	RTTESTI_CHECK_MSG(cFramesWritten == cFramesChild, ("Child: Expected %RU32 written frames, got %RU32\n", cFramesChild, cFramesWritten));
592	RTTESTI_CHECK_RC_OK(AudioMixBufMixToParent(&child, cFramesWritten, &cFramesMixed));
593
594	cFramesTotalRead = 0;
595	for (;;)
596	{
597	RTTESTI_CHECK_RC_OK_BREAK(AudioMixBufAcquireReadBlock(&parent, achBuf, cbBuf, &cFramesRead));
598	if (!cFramesRead)
599	break;
600	cFramesTotalRead += cFramesRead;
601	AudioMixBufReleaseReadBlock(&parent, cFramesRead);
602	AudioMixBufFinish(&parent, cFramesRead);
603	}
604	RTTESTI_CHECK_MSG(cFramesTotalRead == cFramesParent, ("Parent: Expected %RU32 mixed frames, got %RU32\n", cFramesParent, cFramesTotalRead));
605
606	/* Check that at -6dB the sample values are halved. */
607	pSrc16 = &aFrames16S[0];
608	pDst16 = (int16_t *)achBuf;
609
610	for (i = 0; i < cFramesParent * 2 /* stereo */; ++i)
611	{
612	/* Watch out! For negative values, x >> 1 is not the same as x / 2. */
613	RTTESTI_CHECK_MSG(pSrc16 >> 1 == pDst16, ("index %u: Dst=%d, Src=%d\n", i, pDst16, pSrc16));
614	++pSrc16;
615	++pDst16;
616	}
617
618	AudioMixBufDestroy(&parent);
619	AudioMixBufDestroy(&child);
620
621	return RTTestSubErrorCount(hTest) ? VERR_GENERAL_FAILURE : VINF_SUCCESS;
622	}
623
624	int main(int argc, char **argv)
625	{
626	RTR3InitExe(argc, &argv, 0);
627
628	/*
629	* Initialize IPRT and create the test.
630	*/
631	RTTEST hTest;
632	int rc = RTTestInitAndCreate("tstAudioMixBuffer", &hTest);
633	if (rc)
634	return rc;
635	RTTestBanner(hTest);
636
637	rc = tstSingle(hTest);
638	if (RT_SUCCESS(rc))
639	rc = tstParentChild(hTest);
640	if (RT_SUCCESS(rc))
641	rc = tstConversion8(hTest);
642	if (RT_SUCCESS(rc))
643	rc = tstConversion16(hTest);
644	if (RT_SUCCESS(rc))
645	rc = tstVolume(hTest);
646
647	/*
648	* Summary
649	*/
650	return RTTestSummaryAndDestroy(hTest);
651	}

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source: vbox/trunk/src/VBox/Devices/Audio/testcase/tstAudioMixBuffer.cpp@ 71752

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