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/*
* Copyright (C) 2021 Igalia S.L. All rights reserved.
* Copyright (C) 2022 Apple 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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.
*/
#include "config.h"
#if USE(AVIF)
#include "AVIFImageReader.h"
#include "AVIFImageDecoder.h"
namespace WebCore {
AVIFImageReader::AVIFImageReader(RefPtr<AVIFImageDecoder>&& decoder)
: m_decoder(WTFMove(decoder))
, m_avifDecoder(avifDecoderCreate())
{
}
AVIFImageReader::~AVIFImageReader() = default;
bool AVIFImageReader::parseHeader(const SharedBuffer& data, bool allDataReceived)
{
if (avifDecoderSetIOMemory(m_avifDecoder.get(), data.data(), data.size()) != AVIF_RESULT_OK)
return allDataReceived ? m_decoder->setFailed() : false;
if (avifDecoderParse(m_avifDecoder.get()) != AVIF_RESULT_OK
|| avifDecoderNextImage(m_avifDecoder.get()) != AVIF_RESULT_OK)
return allDataReceived ? m_decoder->setFailed() : false;
if (!m_dataParsed && allDataReceived)
m_dataParsed = true;
const avifImage* firstImage = m_avifDecoder->image;
m_decoder->setSize(IntSize(firstImage->width, firstImage->height));
return true;
}
void AVIFImageReader::decodeFrame(size_t frameIndex, ScalableImageDecoderFrame& buffer, const SharedBuffer& data)
{
if (m_decoder->failed())
return;
if (!m_dataParsed) {
if (avifDecoderSetIOMemory(m_avifDecoder.get(), data.data(), data.size()) != AVIF_RESULT_OK) {
m_decoder->setFailed();
return;
}
if (avifDecoderParse(m_avifDecoder.get()) != AVIF_RESULT_OK) {
m_decoder->setFailed();
return;
}
if (m_decoder->isAllDataReceived())
m_dataParsed = true;
}
if (avifDecoderNthImage(m_avifDecoder.get(), frameIndex) != AVIF_RESULT_OK) {
m_decoder->setFailed();
return;
}
IntSize imageSize(m_decoder->size());
if (buffer.isInvalid() && !buffer.initialize(imageSize, m_decoder->premultiplyAlpha())) {
m_decoder->setFailed();
return;
}
buffer.setDecodingStatus(DecodingStatus::Partial);
avifRGBImage decodedRGBImage;
avifRGBImageSetDefaults(&decodedRGBImage, m_avifDecoder->image);
decodedRGBImage.depth = 8;
decodedRGBImage.alphaPremultiplied = m_decoder->premultiplyAlpha();
decodedRGBImage.format = AVIF_RGB_FORMAT_BGRA;
decodedRGBImage.rowBytes = imageSize.width() * sizeof(uint32_t);
decodedRGBImage.pixels = reinterpret_cast<uint8_t*>(buffer.backingStore()->pixelAt(0, 0));
if (avifImageYUVToRGB(m_avifDecoder->image, &decodedRGBImage) != AVIF_RESULT_OK) {
m_decoder->setFailed();
return;
}
buffer.setHasAlpha(avifRGBFormatHasAlpha(decodedRGBImage.format));
buffer.setDuration(Seconds(m_avifDecoder->imageTiming.duration));
buffer.setDecodingStatus(DecodingStatus::Complete);
}
size_t AVIFImageReader::imageCount() const
{
return m_avifDecoder->imageCount;
}
}
#endif // USE(AVIF)
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