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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/media/webaudio/blink/ReverbInputBuffer.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webaudio/blink/ReverbInputBuffer.h')
-rw-r--r-- | dom/media/webaudio/blink/ReverbInputBuffer.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/dom/media/webaudio/blink/ReverbInputBuffer.h b/dom/media/webaudio/blink/ReverbInputBuffer.h new file mode 100644 index 0000000000..93ef97a010 --- /dev/null +++ b/dom/media/webaudio/blink/ReverbInputBuffer.h @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2010 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef ReverbInputBuffer_h +#define ReverbInputBuffer_h + +#include "nsTArray.h" +#include "mozilla/Atomics.h" +#include "mozilla/MemoryReporting.h" + +namespace WebCore { + +// ReverbInputBuffer is used to buffer input samples for deferred processing by +// the background threads. +class ReverbInputBuffer { + public: + explicit ReverbInputBuffer(size_t length); + + // The realtime audio thread keeps writing samples here. + // The assumption is that the buffer's length is evenly divisible by + // numberOfFrames (for nearly all cases this will be fine). + // FIXME: remove numberOfFrames restriction... + void write(const float* sourceP, size_t numberOfFrames); + + // Background threads can call this to check if there's anything to read... + size_t writeIndex() const { return m_writeIndex; } + + // The individual background threads read here (and hope that they can keep up + // with the buffer writing). readIndex is updated with the next readIndex to + // read from... The assumption is that the buffer's length is evenly divisible + // by numberOfFrames. + // FIXME: remove numberOfFrames restriction... + float* directReadFrom(int* readIndex, size_t numberOfFrames); + + void reset(); + + size_t sizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const { + return m_buffer.ShallowSizeOfExcludingThis(aMallocSizeOf); + } + + private: + nsTArray<float> m_buffer; + mozilla::Atomic<size_t, mozilla::ReleaseAcquire> m_writeIndex; +}; + +} // namespace WebCore + +#endif // ReverbInputBuffer_h |