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/*
* Copyright (C) 2023 Igalia S.L
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* aint with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "PlatformRawAudioData.h"
#include "AudioSampleFormat.h"
#include "NotImplemented.h"
#include "WebCodecsAudioDataAlgorithms.h"
#include <wtf/RefPtr.h>
#if ENABLE(WEB_CODECS)
namespace WebCore {
#if !USE(GSTREAMER) && !USE(AVFOUNDATION)
RefPtr<PlatformRawAudioData> PlatformRawAudioData::create(std::span<const uint8_t>, AudioSampleFormat, float, int64_t, size_t, size_t)
{
notImplemented();
return nullptr;
}
void PlatformRawAudioData::copyTo(std::span<uint8_t>, AudioSampleFormat, size_t, std::optional<size_t>, std::optional<size_t>, unsigned long)
{
notImplemented();
}
#endif
void PlatformRawAudioData::copyToInterleaved(PlaneData source, std::span<uint8_t> destination, AudioSampleFormat format, unsigned long copyElementCount)
{
ASSERT(!(copyElementCount % numberOfChannels()));
auto copyElements = [numberOfChannels = numberOfChannels()]<typename T>(std::span<T> destination, const auto& source, size_t frames)
{
RELEASE_ASSERT(destination.size() >= frames * numberOfChannels);
RELEASE_ASSERT(source[0].size() >= frames); // All planes have the exact same size.
size_t index = 0;
for (size_t frame = 0; frame < frames; frame++) {
for (size_t channel = 0; channel < source.size(); channel++)
destination[index++] = convertAudioSample<T>(source[channel][frame]);
}
};
size_t numberOfFrames = copyElementCount / numberOfChannels();
WTF::switchOn(audioElementSpan(format, destination), [&source, &numberOfFrames, ©Elements](auto dst) {
switchOn(source, [&](auto& src) {
copyElements(dst, src, numberOfFrames);
});
});
}
} // namespace WebCore
#endif // ENABLE(WEB_CODECS)
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