third_party/WebKit/Source/platform/audio/DownSampler.cpp - Issue 1557363002: Remove the WEB_AUDIO compile time flag

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Issue 1557363002: Remove the WEB_AUDIO compile time flag (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 11 months ago

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1 /*	1 /*

2 * Copyright (C) 2013 Google Inc. All rights reserved.	2 * Copyright (C) 2013 Google Inc. All rights reserved.

3 *	3 *

4 * Redistribution and use in source and binary forms, with or without	4 * Redistribution and use in source and binary forms, with or without

5 * modification, are permitted provided that the following conditions are	5 * modification, are permitted provided that the following conditions are

6 * met:	6 * met:

7 *	7 *

8 * * Redistributions of source code must retain the above copyright	8 * * Redistributions of source code must retain the above copyright

9 * notice, this list of conditions and the following disclaimer.	9 * notice, this list of conditions and the following disclaimer.

10 * * Redistributions in binary form must reproduce the above	10 * * Redistributions in binary form must reproduce the above

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22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,	22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT	23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

29 */	29 */

30	30

31 #include "platform/audio/DownSampler.h"	31 #include "platform/audio/DownSampler.h"

32

33 #if ENABLE(WEB_AUDIO)

34 #include "wtf/MathExtras.h"	32 #include "wtf/MathExtras.h"

35	33

36 namespace blink {	34 namespace blink {

37	35

38 DownSampler::DownSampler(size_t inputBlockSize)	36 DownSampler::DownSampler(size_t inputBlockSize)

39 : m_inputBlockSize(inputBlockSize)	37 : m_inputBlockSize(inputBlockSize)

40 , m_reducedKernel(DefaultKernelSize / 2)	38 , m_reducedKernel(DefaultKernelSize / 2)

41 , m_convolver(inputBlockSize / 2) // runs at 1/2 source sample-rate	39 , m_convolver(inputBlockSize / 2) // runs at 1/2 source sample-rate

42 , m_tempBuffer(inputBlockSize / 2)	40 , m_tempBuffer(inputBlockSize / 2)

43 , m_inputBuffer(inputBlockSize * 2)	41 , m_inputBuffer(inputBlockSize * 2)

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138 }	136 }

139	137

140 size_t DownSampler::latencyFrames() const	138 size_t DownSampler::latencyFrames() const

141 {	139 {

142 // Divide by two since this is a linear phase kernel and the delay is at the center of the kernel.	140 // Divide by two since this is a linear phase kernel and the delay is at the center of the kernel.

143 return m_reducedKernel.size() / 2;	141 return m_reducedKernel.size() / 2;

144 }	142 }

145	143

146 } // namespace blink	144 } // namespace blink

147	145

148 #endif // ENABLE(WEB_AUDIO)

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