MediaSampleAVFObjC.mm [plain text]
/*
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
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* modification, are permitted provided that the following conditions
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* 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
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "MediaSampleAVFObjC.h"
#import "PixelBufferConformerCV.h"
#import <JavaScriptCore/JSCInlines.h>
#import <JavaScriptCore/TypedArrayInlines.h>
#import <wtf/PrintStream.h>
#import <wtf/cf/TypeCastsCF.h>
#import "CoreVideoSoftLink.h"
#import <pal/cf/CoreMediaSoftLink.h>
using namespace PAL;
WTF_DECLARE_CF_TYPE_TRAIT(CMSampleBuffer);
namespace WebCore {
static void deallocateVectorBuffer(void* array, const void*)
{
WTF::VectorMalloc::free(array);
}
RefPtr<MediaSampleAVFObjC> MediaSampleAVFObjC::createImageSample(Vector<uint8_t>&& array, unsigned width, unsigned height)
{
CVPixelBufferRef pixelBufferRaw = nullptr;
auto data = array.releaseBuffer().leakPtr();
auto status = CVPixelBufferCreateWithBytes(kCFAllocatorDefault, width, height, kCVPixelFormatType_32BGRA, data, width * 4, deallocateVectorBuffer, data, nullptr, &pixelBufferRaw);
auto pixelBuffer = adoptCF(pixelBufferRaw);
if (!pixelBuffer) {
deallocateVectorBuffer(data, nullptr);
return nullptr;
}
ASSERT_UNUSED(status, !status);
CMVideoFormatDescriptionRef formatDescriptionRaw = nullptr;
status = CMVideoFormatDescriptionCreateForImageBuffer(kCFAllocatorDefault, pixelBuffer.get(), &formatDescriptionRaw);
ASSERT(!status);
auto formatDescription = adoptCF(formatDescriptionRaw);
CMSampleTimingInfo sampleTimingInformation = { kCMTimeInvalid, kCMTimeInvalid, kCMTimeInvalid };
CMSampleBufferRef sampleBufferRaw = nullptr;
status = CMSampleBufferCreateReadyWithImageBuffer(kCFAllocatorDefault, pixelBuffer.get(), formatDescription.get(), &sampleTimingInformation, &sampleBufferRaw);
ASSERT(!status);
auto sampleBuffer = adoptCF(sampleBufferRaw);
CFArrayRef attachmentsArray = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer.get(), true);
for (CFIndex i = 0, count = CFArrayGetCount(attachmentsArray); i < count; ++i) {
CFMutableDictionaryRef attachments = checked_cf_cast<CFMutableDictionaryRef>(CFArrayGetValueAtIndex(attachmentsArray, i));
CFDictionarySetValue(attachments, kCMSampleAttachmentKey_DisplayImmediately, kCFBooleanTrue);
}
return create(sampleBuffer.get());
}
MediaTime MediaSampleAVFObjC::presentationTime() const
{
auto timeStamp = CMSampleBufferGetOutputPresentationTimeStamp(m_sample.get());
if (CMTIME_IS_INVALID(timeStamp))
timeStamp = CMSampleBufferGetPresentationTimeStamp(m_sample.get());
return PAL::toMediaTime(timeStamp);
}
MediaTime MediaSampleAVFObjC::decodeTime() const
{
return PAL::toMediaTime(CMSampleBufferGetDecodeTimeStamp(m_sample.get()));
}
MediaTime MediaSampleAVFObjC::duration() const
{
auto duration = CMSampleBufferGetOutputDuration(m_sample.get());
if (CMTIME_IS_INVALID(duration))
duration = CMSampleBufferGetDuration(m_sample.get());
return PAL::toMediaTime(duration);
}
size_t MediaSampleAVFObjC::sizeInBytes() const
{
return CMSampleBufferGetTotalSampleSize(m_sample.get());
}
PlatformSample MediaSampleAVFObjC::platformSample()
{
PlatformSample sample = { PlatformSample::CMSampleBufferType, { .cmSampleBuffer = m_sample.get() } };
return sample;
}
uint32_t MediaSampleAVFObjC::videoPixelFormat() const
{
auto pixelBuffer = static_cast<CVPixelBufferRef>(CMSampleBufferGetImageBuffer(m_sample.get()));
return CVPixelBufferGetPixelFormatType(pixelBuffer);
}
static bool isCMSampleBufferAttachmentRandomAccess(CFDictionaryRef attachmentDict)
{
return !CFDictionaryContainsKey(attachmentDict, kCMSampleAttachmentKey_NotSync);
}
static bool isCMSampleBufferRandomAccess(CMSampleBufferRef sample)
{
CFArrayRef attachments = CMSampleBufferGetSampleAttachmentsArray(sample, false);
if (!attachments)
return true;
for (CFIndex i = 0, count = CFArrayGetCount(attachments); i < count; ++i) {
if (!isCMSampleBufferAttachmentRandomAccess(checked_cf_cast<CFDictionaryRef>(CFArrayGetValueAtIndex(attachments, i))))
return false;
}
return true;
}
static bool isCMSampleBufferAttachmentNonDisplaying(CFDictionaryRef attachmentDict)
{
return CFDictionaryContainsKey(attachmentDict, kCMSampleAttachmentKey_DoNotDisplay);
}
static bool isCMSampleBufferNonDisplaying(CMSampleBufferRef sample)
{
CFArrayRef attachments = CMSampleBufferGetSampleAttachmentsArray(sample, false);
if (!attachments)
return false;
for (CFIndex i = 0; i < CFArrayGetCount(attachments); ++i) {
if (isCMSampleBufferAttachmentNonDisplaying(checked_cf_cast<CFDictionaryRef>(CFArrayGetValueAtIndex(attachments, i))))
return true;
}
return false;
}
MediaSample::SampleFlags MediaSampleAVFObjC::flags() const
{
int returnValue = MediaSample::None;
if (isCMSampleBufferRandomAccess(m_sample.get()))
returnValue |= MediaSample::IsSync;
if (isCMSampleBufferNonDisplaying(m_sample.get()))
returnValue |= MediaSample::IsNonDisplaying;
return SampleFlags(returnValue);
}
FloatSize MediaSampleAVFObjC::presentationSize() const
{
CMFormatDescriptionRef formatDescription = CMSampleBufferGetFormatDescription(m_sample.get());
if (CMFormatDescriptionGetMediaType(formatDescription) != kCMMediaType_Video)
return FloatSize();
return FloatSize(CMVideoFormatDescriptionGetPresentationDimensions(formatDescription, true, true));
}
void MediaSampleAVFObjC::dump(PrintStream& out) const
{
out.print("{PTS(", presentationTime(), "), DTS(", decodeTime(), "), duration(", duration(), "), flags(", (int)flags(), "), presentationSize(", presentationSize().width(), "x", presentationSize().height(), ")}");
}
void MediaSampleAVFObjC::offsetTimestampsBy(const MediaTime& offset)
{
CMItemCount itemCount = 0;
if (noErr != CMSampleBufferGetSampleTimingInfoArray(m_sample.get(), 0, nullptr, &itemCount))
return;
Vector<CMSampleTimingInfo> timingInfoArray;
timingInfoArray.grow(itemCount);
if (noErr != CMSampleBufferGetSampleTimingInfoArray(m_sample.get(), itemCount, timingInfoArray.data(), nullptr))
return;
for (auto& timing : timingInfoArray) {
timing.presentationTimeStamp = PAL::toCMTime(PAL::toMediaTime(timing.presentationTimeStamp) + offset);
timing.decodeTimeStamp = PAL::toCMTime(PAL::toMediaTime(timing.decodeTimeStamp) + offset);
}
CMSampleBufferRef newSample;
if (noErr != CMSampleBufferCreateCopyWithNewTiming(kCFAllocatorDefault, m_sample.get(), itemCount, timingInfoArray.data(), &newSample))
return;
m_sample = adoptCF(newSample);
}
void MediaSampleAVFObjC::setTimestamps(const WTF::MediaTime &presentationTimestamp, const WTF::MediaTime &decodeTimestamp)
{
CMItemCount itemCount = 0;
if (noErr != CMSampleBufferGetSampleTimingInfoArray(m_sample.get(), 0, nullptr, &itemCount))
return;
Vector<CMSampleTimingInfo> timingInfoArray;
timingInfoArray.grow(itemCount);
if (noErr != CMSampleBufferGetSampleTimingInfoArray(m_sample.get(), itemCount, timingInfoArray.data(), nullptr))
return;
for (auto& timing : timingInfoArray) {
timing.presentationTimeStamp = PAL::toCMTime(presentationTimestamp);
timing.decodeTimeStamp = PAL::toCMTime(decodeTimestamp);
}
CMSampleBufferRef newSample;
if (noErr != CMSampleBufferCreateCopyWithNewTiming(kCFAllocatorDefault, m_sample.get(), itemCount, timingInfoArray.data(), &newSample))
return;
m_sample = adoptCF(newSample);
}
bool MediaSampleAVFObjC::isDivisable() const
{
if (CMSampleBufferGetNumSamples(m_sample.get()) == 1)
return false;
if (CMSampleBufferGetSampleSizeArray(m_sample.get(), 0, nullptr, nullptr) == kCMSampleBufferError_BufferHasNoSampleSizes)
return false;
return true;
}
std::pair<RefPtr<MediaSample>, RefPtr<MediaSample>> MediaSampleAVFObjC::divide(const MediaTime& presentationTime)
{
if (!isDivisable())
return { nullptr, nullptr };
CFIndex samplesBeforePresentationTime = 0;
CMSampleBufferCallBlockForEachSample(m_sample.get(), [&] (CMSampleBufferRef sampleBuffer, CMItemCount) -> OSStatus {
if (PAL::toMediaTime(CMSampleBufferGetPresentationTimeStamp(sampleBuffer)) >= presentationTime)
return 1;
++samplesBeforePresentationTime;
return noErr;
});
if (!samplesBeforePresentationTime)
return { nullptr, this };
CMItemCount sampleCount = CMSampleBufferGetNumSamples(m_sample.get());
if (samplesBeforePresentationTime >= sampleCount)
return { this, nullptr };
CMSampleBufferRef rawSampleBefore = nullptr;
CFRange rangeBefore = CFRangeMake(0, samplesBeforePresentationTime);
if (CMSampleBufferCopySampleBufferForRange(kCFAllocatorDefault, m_sample.get(), rangeBefore, &rawSampleBefore) != noErr)
return { nullptr, nullptr };
RetainPtr<CMSampleBufferRef> sampleBefore = adoptCF(rawSampleBefore);
CMSampleBufferRef rawSampleAfter = nullptr;
CFRange rangeAfter = CFRangeMake(samplesBeforePresentationTime, sampleCount - samplesBeforePresentationTime);
if (CMSampleBufferCopySampleBufferForRange(kCFAllocatorDefault, m_sample.get(), rangeAfter, &rawSampleAfter) != noErr)
return { nullptr, nullptr };
RetainPtr<CMSampleBufferRef> sampleAfter = adoptCF(rawSampleAfter);
return { MediaSampleAVFObjC::create(sampleBefore.get(), m_id), MediaSampleAVFObjC::create(sampleAfter.get(), m_id) };
}
Ref<MediaSample> MediaSampleAVFObjC::createNonDisplayingCopy() const
{
CMSampleBufferRef newSampleBuffer = 0;
CMSampleBufferCreateCopy(kCFAllocatorDefault, m_sample.get(), &newSampleBuffer);
ASSERT(newSampleBuffer);
CFArrayRef attachmentsArray = CMSampleBufferGetSampleAttachmentsArray(newSampleBuffer, true);
for (CFIndex i = 0; i < CFArrayGetCount(attachmentsArray); ++i) {
CFMutableDictionaryRef attachments = checked_cf_cast<CFMutableDictionaryRef>(CFArrayGetValueAtIndex(attachmentsArray, i));
CFDictionarySetValue(attachments, kCMSampleAttachmentKey_DoNotDisplay, kCFBooleanTrue);
}
return MediaSampleAVFObjC::create(adoptCF(newSampleBuffer).get(), m_id);
}
RefPtr<JSC::Uint8ClampedArray> MediaSampleAVFObjC::getRGBAImageData() const
{
const OSType imageFormat = kCVPixelFormatType_32RGBA;
RetainPtr<CFNumberRef> imageFormatNumber = adoptCF(CFNumberCreate(nullptr, kCFNumberIntType, &imageFormat));
RetainPtr<CFMutableDictionaryRef> conformerOptions = adoptCF(CFDictionaryCreateMutable(0, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
CFDictionarySetValue(conformerOptions.get(), kCVPixelBufferPixelFormatTypeKey, imageFormatNumber.get());
PixelBufferConformerCV pixelBufferConformer(conformerOptions.get());
auto pixelBuffer = static_cast<CVPixelBufferRef>(CMSampleBufferGetImageBuffer(m_sample.get()));
auto rgbaPixelBuffer = pixelBufferConformer.convert(pixelBuffer);
auto status = CVPixelBufferLockBaseAddress(rgbaPixelBuffer.get(), kCVPixelBufferLock_ReadOnly);
ASSERT(status == noErr);
void* data = CVPixelBufferGetBaseAddressOfPlane(rgbaPixelBuffer.get(), 0);
size_t byteLength = CVPixelBufferGetHeight(pixelBuffer) * CVPixelBufferGetWidth(pixelBuffer) * 4;
auto result = JSC::Uint8ClampedArray::tryCreate(JSC::ArrayBuffer::create(data, byteLength), 0, byteLength);
status = CVPixelBufferUnlockBaseAddress(rgbaPixelBuffer.get(), kCVPixelBufferLock_ReadOnly);
ASSERT(status == noErr);
return result;
}
static inline void setSampleBufferAsDisplayImmediately(CMSampleBufferRef sampleBuffer)
{
CFArrayRef attachmentsArray = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer, true);
for (CFIndex i = 0; i < CFArrayGetCount(attachmentsArray); ++i) {
CFMutableDictionaryRef attachments = checked_cf_cast<CFMutableDictionaryRef>(CFArrayGetValueAtIndex(attachmentsArray, i));
CFDictionarySetValue(attachments, kCMSampleAttachmentKey_DisplayImmediately, kCFBooleanTrue);
}
}
void MediaSampleAVFObjC::setAsDisplayImmediately(MediaSample& sample)
{
setSampleBufferAsDisplayImmediately(sample.platformSample().sample.cmSampleBuffer);
}
bool MediaSampleAVFObjC::isHomogeneous() const
{
CFArrayRef attachmentsArray = CMSampleBufferGetSampleAttachmentsArray(m_sample.get(), true);
if (!attachmentsArray)
return true;
auto count = CFArrayGetCount(attachmentsArray);
if (count <= 1)
return true;
CFDictionaryRef firstAttachment = checked_cf_cast<CFDictionaryRef>(CFArrayGetValueAtIndex(attachmentsArray, 0));
bool isSync = isCMSampleBufferAttachmentRandomAccess(firstAttachment);
bool isNonDisplaying = isCMSampleBufferAttachmentNonDisplaying(firstAttachment);
for (CFIndex i = 1; i < count; ++i) {
auto attachmentDict = checked_cf_cast<CFDictionaryRef>(CFArrayGetValueAtIndex(attachmentsArray, i));
if (isSync != isCMSampleBufferAttachmentRandomAccess(attachmentDict))
return false;
if (isNonDisplaying != isCMSampleBufferAttachmentNonDisplaying(attachmentDict))
return false;
};
return true;
}
Vector<Ref<MediaSampleAVFObjC>> MediaSampleAVFObjC::divideIntoHomogeneousSamples()
{
using SampleVector = Vector<Ref<MediaSampleAVFObjC>>;
CFArrayRef attachmentsArray = CMSampleBufferGetSampleAttachmentsArray(m_sample.get(), true);
if (!attachmentsArray)
return SampleVector::from(makeRef(*this));
auto count = CFArrayGetCount(attachmentsArray);
if (count <= 1)
return SampleVector::from(makeRef(*this));
CFDictionaryRef firstAttachment = checked_cf_cast<CFDictionaryRef>(CFArrayGetValueAtIndex(attachmentsArray, 0));
bool isSync = isCMSampleBufferAttachmentRandomAccess(firstAttachment);
bool isNonDisplaying = isCMSampleBufferAttachmentNonDisplaying(firstAttachment);
Vector<CFRange> ranges;
CFIndex currentRangeStart = 0;
CFIndex currentRangeLength = 1;
for (CFIndex i = 1; i < count; ++i, ++currentRangeLength) {
CFDictionaryRef attachmentDict = checked_cf_cast<CFDictionaryRef>(CFArrayGetValueAtIndex(attachmentsArray, i));
if (isSync == isCMSampleBufferAttachmentRandomAccess(attachmentDict) && isNonDisplaying == isCMSampleBufferAttachmentNonDisplaying(attachmentDict))
continue;
ranges.append(CFRangeMake(currentRangeStart, currentRangeLength));
currentRangeStart = i;
currentRangeLength = 0;
}
ranges.append(CFRangeMake(currentRangeStart, currentRangeLength));
if (ranges.size() == 1)
return SampleVector::from(makeRef(*this));
SampleVector samples;
samples.reserveInitialCapacity(ranges.size());
for (auto& range : ranges) {
CMSampleBufferRef rawSample = nullptr;
if (CMSampleBufferCopySampleBufferForRange(kCFAllocatorDefault, m_sample.get(), range, &rawSample) != noErr || !rawSample)
return { };
samples.uncheckedAppend(MediaSampleAVFObjC::create(adoptCF(rawSample).get(), m_id));
}
return samples;
}
RetainPtr<CMSampleBufferRef> MediaSampleAVFObjC::cloneSampleBufferAndSetAsDisplayImmediately(CMSampleBufferRef sample)
{
auto pixelBuffer = static_cast<CVImageBufferRef>(PAL::CMSampleBufferGetImageBuffer(sample));
if (!pixelBuffer)
return nullptr;
CMVideoFormatDescriptionRef formatDescription = nullptr;
auto status = CMVideoFormatDescriptionCreateForImageBuffer(kCFAllocatorDefault, pixelBuffer, &formatDescription);
if (status)
return nullptr;
auto retainedFormatDescription = adoptCF(formatDescription);
CMItemCount itemCount = 0;
status = CMSampleBufferGetSampleTimingInfoArray(sample, 0, nullptr, &itemCount);
if (status)
return nullptr;
Vector<CMSampleTimingInfo> timingInfoArray;
timingInfoArray.grow(itemCount);
status = CMSampleBufferGetSampleTimingInfoArray(sample, itemCount, timingInfoArray.data(), nullptr);
if (status)
return nullptr;
CMSampleBufferRef newSampleBuffer;
status = CMSampleBufferCreateReadyWithImageBuffer(kCFAllocatorDefault, pixelBuffer, formatDescription, timingInfoArray.data(), &newSampleBuffer);
if (status)
return nullptr;
setSampleBufferAsDisplayImmediately(newSampleBuffer);
return adoptCF(newSampleBuffer);
}
}