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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WMFDataEncoderUtils.h"
#include "EncoderConfig.h"
#include "MFTEncoder.h"
#include "MediaData.h"
#include "mozilla/Logging.h"
namespace mozilla {
#define WMF_ENC_LOG(arg, ...) \
MOZ_LOG(mozilla::sPEMLog, mozilla::LogLevel::Error, \
("WMFDataEncoderUtils::%s: " arg, __func__, ##__VA_ARGS__))
GUID CodecToSubtype(CodecType aCodec) {
switch (aCodec) {
case CodecType::H264:
return MFVideoFormat_H264;
case CodecType::VP8:
return MFVideoFormat_VP80;
case CodecType::VP9:
return MFVideoFormat_VP90;
default:
return GUID_NULL;
}
}
bool CanCreateWMFEncoder(CodecType aCodec) {
bool canCreate = false;
mscom::EnsureMTA([&]() {
if (!wmf::MediaFoundationInitializer::HasInitialized()) {
return;
}
// Try HW encoder first.
auto enc = MakeRefPtr<MFTEncoder>(false /* HW not allowed */);
canCreate = SUCCEEDED(enc->Create(CodecToSubtype(aCodec)));
if (!canCreate) {
// Try SW encoder.
enc = MakeRefPtr<MFTEncoder>(true /* HW not allowed */);
canCreate = SUCCEEDED(enc->Create(CodecToSubtype(aCodec)));
}
});
return canCreate;
}
static already_AddRefed<MediaByteBuffer> ParseH264Parameters(
nsTArray<uint8_t>& aHeader, const bool aAsAnnexB) {
size_t length = aHeader.Length();
auto annexB = MakeRefPtr<MediaByteBuffer>(length);
PodCopy(annexB->Elements(), aHeader.Elements(), length);
annexB->SetLength(length);
if (aAsAnnexB) {
return annexB.forget();
}
// Convert to avcC.
nsTArray<AnnexB::NALEntry> paramSets;
AnnexB::ParseNALEntries(
Span<const uint8_t>(annexB->Elements(), annexB->Length()), paramSets);
auto avcc = MakeRefPtr<MediaByteBuffer>();
AnnexB::NALEntry& sps = paramSets.ElementAt(0);
AnnexB::NALEntry& pps = paramSets.ElementAt(1);
const uint8_t* spsPtr = annexB->Elements() + sps.mOffset;
H264::WriteExtraData(
avcc, spsPtr[1], spsPtr[2], spsPtr[3],
Span<const uint8_t>(spsPtr, sps.mSize),
Span<const uint8_t>(annexB->Elements() + pps.mOffset, pps.mSize));
return avcc.forget();
}
static uint32_t GetProfile(H264_PROFILE aProfileLevel) {
switch (aProfileLevel) {
case H264_PROFILE_BASE:
return eAVEncH264VProfile_Base;
case H264_PROFILE_MAIN:
return eAVEncH264VProfile_Main;
case H264_PROFILE_HIGH:
return eAVEncH264VProfile_High;
default:
return eAVEncH264VProfile_unknown;
}
}
already_AddRefed<IMFMediaType> CreateInputType(EncoderConfig& aConfig) {
RefPtr<IMFMediaType> type;
HRESULT hr = wmf::MFCreateMediaType(getter_AddRefs(type));
if (FAILED(hr)) {
WMF_ENC_LOG("MFCreateMediaType (input) error: %lx", hr);
return nullptr;
}
hr = type->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);
if (FAILED(hr)) {
WMF_ENC_LOG("Create input type: SetGUID (major type) error: %lx", hr);
return nullptr;
}
// Always NV12 input
hr = type->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_NV12);
if (FAILED(hr)) {
WMF_ENC_LOG("Create input type: SetGUID (subtype) error: %lx", hr);
return nullptr;
}
hr = type->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive);
if (FAILED(hr)) {
WMF_ENC_LOG("Create input type: interlace mode (input) error: %lx", hr);
return nullptr;
}
// WMF requires a framerate to intialize properly. Provide something
// reasonnable if not provided.
if (!aConfig.mFramerate) {
aConfig.mFramerate = 30;
}
if (aConfig.mFramerate) {
hr = MFSetAttributeRatio(type, MF_MT_FRAME_RATE, aConfig.mFramerate, 1);
if (FAILED(hr)) {
WMF_ENC_LOG("Create input type: frame rate (input) error: %lx", hr);
return nullptr;
}
}
hr = MFSetAttributeSize(type, MF_MT_FRAME_SIZE, aConfig.mSize.width,
aConfig.mSize.height);
if (FAILED(hr)) {
WMF_ENC_LOG("Create input type: frame size (input) error: %lx", hr);
return nullptr;
}
return type.forget();
}
already_AddRefed<IMFMediaType> CreateOutputType(EncoderConfig& aConfig) {
RefPtr<IMFMediaType> type;
HRESULT hr = wmf::MFCreateMediaType(getter_AddRefs(type));
if (FAILED(hr)) {
WMF_ENC_LOG("MFCreateMediaType (output) error: %lx", hr);
return nullptr;
}
hr = type->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);
if (FAILED(hr)) {
WMF_ENC_LOG("Create output type: set major type error: %lx", hr);
return nullptr;
}
hr = type->SetGUID(MF_MT_SUBTYPE, CodecToSubtype(aConfig.mCodec));
if (FAILED(hr)) {
WMF_ENC_LOG("Create output type: set subtype error: %lx", hr);
return nullptr;
}
// A bitrate need to be set here, attempt to make an educated guess if none is
// provided. This could be per codec to have nicer defaults.
size_t longDimension = std::max(aConfig.mSize.width, aConfig.mSize.height);
if (!aConfig.mBitrate) {
if (longDimension < 720) {
aConfig.mBitrate = 2000000;
} else if (longDimension < 1080) {
aConfig.mBitrate = 4000000;
} else {
aConfig.mBitrate = 8000000;
}
}
// No way to set variable / constant here.
hr = type->SetUINT32(MF_MT_AVG_BITRATE, aConfig.mBitrate);
if (FAILED(hr)) {
WMF_ENC_LOG("Create output type: set bitrate error: %lx", hr);
return nullptr;
}
hr = type->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive);
if (FAILED(hr)) {
WMF_ENC_LOG("Create output type set interlave mode error: %lx", hr);
return nullptr;
}
// A positive rate must always be preset here, see the Input config part.
MOZ_ASSERT(aConfig.mFramerate);
if (aConfig.mFramerate) {
hr = MFSetAttributeRatio(type, MF_MT_FRAME_RATE, aConfig.mFramerate, 1);
if (FAILED(hr)) {
WMF_ENC_LOG("Create output type set frame rate error: %lx", hr);
return nullptr;
}
}
// Required
hr = MFSetAttributeSize(type, MF_MT_FRAME_SIZE, aConfig.mSize.width,
aConfig.mSize.height);
if (FAILED(hr)) {
WMF_ENC_LOG("Create output type set frame size error: %lx", hr);
return nullptr;
}
if (aConfig.mCodecSpecific) {
if (aConfig.mCodecSpecific->is<H264Specific>()) {
MOZ_ASSERT(aConfig.mCodec == CodecType::H264);
hr = FAILED(type->SetUINT32(
MF_MT_MPEG2_PROFILE,
GetProfile(aConfig.mCodecSpecific->as<H264Specific>().mProfile)));
if (hr) {
WMF_ENC_LOG("Create output type set profile error: %lx", hr);
return nullptr;
}
}
}
return type.forget();
}
HRESULT SetMediaTypes(RefPtr<MFTEncoder>& aEncoder, EncoderConfig& aConfig) {
RefPtr<IMFMediaType> inputType = CreateInputType(aConfig);
if (!inputType) {
return E_FAIL;
}
RefPtr<IMFMediaType> outputType = CreateOutputType(aConfig);
if (!outputType) {
return E_FAIL;
}
return aEncoder->SetMediaTypes(inputType, outputType);
}
} // namespace mozilla
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