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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 "AOMDecoder.h"
#include "MediaResult.h"
#include "TimeUnits.h"
#include "aom/aomdx.h"
#include "gfx2DGlue.h"
#include "mozilla/PodOperations.h"
#include "mozilla/SyncRunnable.h"
#include "nsError.h"
#include "prsystem.h"
#include <algorithm>
#undef LOG
#define LOG(arg, ...) MOZ_LOG(sPDMLog, mozilla::LogLevel::Debug, ("AOMDecoder(%p)::%s: " arg, this, __func__, ##__VA_ARGS__))
namespace mozilla {
using namespace gfx;
using namespace layers;
AOMDecoder::AOMDecoder(const CreateDecoderParams& aParams)
: mImageContainer(aParams.mImageContainer)
, mTaskQueue(aParams.mTaskQueue)
, mCallback(aParams.mCallback)
, mIsFlushing(false)
, mInfo(aParams.VideoConfig())
{
PodZero(&mCodec);
}
AOMDecoder::~AOMDecoder()
{
}
void
AOMDecoder::Shutdown()
{
aom_codec_destroy(&mCodec);
}
RefPtr<MediaDataDecoder::InitPromise>
AOMDecoder::Init()
{
int decode_threads = 2;
aom_codec_iface_t* dx = aom_codec_av1_dx();
if (mInfo.mDisplay.width >= 2048) {
decode_threads = 8;
}
else if (mInfo.mDisplay.width >= 1024) {
decode_threads = 4;
}
decode_threads = std::min(decode_threads, PR_GetNumberOfProcessors());
aom_codec_dec_cfg_t config;
PodZero(&config);
config.threads = decode_threads;
config.w = config.h = 0; // set after decode
aom_codec_flags_t flags = 0;
if (!dx || aom_codec_dec_init(&mCodec, dx, &config, flags)) {
return InitPromise::CreateAndReject(NS_ERROR_DOM_MEDIA_FATAL_ERR, __func__);
}
return InitPromise::CreateAndResolve(TrackInfo::kVideoTrack, __func__);
}
void
AOMDecoder::Flush()
{
MOZ_ASSERT(mCallback->OnReaderTaskQueue());
mIsFlushing = true;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction([this] () {
// nothing to do for now.
});
SyncRunnable::DispatchToThread(mTaskQueue, r);
mIsFlushing = false;
}
MediaResult
AOMDecoder::DoDecode(MediaRawData* aSample)
{
MOZ_ASSERT(mTaskQueue->IsCurrentThreadIn());
#if defined(DEBUG)
NS_ASSERTION(IsKeyframe(*aSample) == aSample->mKeyframe,
"AOM Decode Keyframe error sample->mKeyframe and si.si_kf out of sync");
#endif
if (aom_codec_err_t r = aom_codec_decode(&mCodec, aSample->Data(), aSample->Size(), nullptr, 0)) {
LOG("AOM Decode error: %s", aom_codec_err_to_string(r));
return MediaResult(
NS_ERROR_DOM_MEDIA_DECODE_ERR,
RESULT_DETAIL("AOM error decoding AV1 sample: %s", aom_codec_err_to_string(r)));
}
aom_codec_iter_t iter = nullptr;
aom_image_t *img;
while ((img = aom_codec_get_frame(&mCodec, &iter))) {
NS_ASSERTION(img->fmt == AOM_IMG_FMT_I420 ||
img->fmt == AOM_IMG_FMT_I444,
"WebM image format not I420 or I444");
// Chroma shifts are rounded down as per the decoding examples in the SDK
VideoData::YCbCrBuffer b;
b.mPlanes[0].mData = img->planes[0];
b.mPlanes[0].mStride = img->stride[0];
b.mPlanes[0].mHeight = img->d_h;
b.mPlanes[0].mWidth = img->d_w;
b.mPlanes[0].mOffset = b.mPlanes[0].mSkip = 0;
b.mPlanes[1].mData = img->planes[1];
b.mPlanes[1].mStride = img->stride[1];
b.mPlanes[1].mOffset = b.mPlanes[1].mSkip = 0;
b.mPlanes[2].mData = img->planes[2];
b.mPlanes[2].mStride = img->stride[2];
b.mPlanes[2].mOffset = b.mPlanes[2].mSkip = 0;
if (img->fmt == AOM_IMG_FMT_I420) {
b.mPlanes[1].mHeight = (img->d_h + 1) >> img->y_chroma_shift;
b.mPlanes[1].mWidth = (img->d_w + 1) >> img->x_chroma_shift;
b.mPlanes[2].mHeight = (img->d_h + 1) >> img->y_chroma_shift;
b.mPlanes[2].mWidth = (img->d_w + 1) >> img->x_chroma_shift;
} else if (img->fmt == AOM_IMG_FMT_I444) {
b.mPlanes[1].mHeight = img->d_h;
b.mPlanes[1].mWidth = img->d_w;
b.mPlanes[2].mHeight = img->d_h;
b.mPlanes[2].mWidth = img->d_w;
} else {
LOG("AOM Unknown image format");
return MediaResult(NS_ERROR_DOM_MEDIA_DECODE_ERR,
RESULT_DETAIL("AOM Unknown image format"));
}
RefPtr<VideoData> v;
v = VideoData::CreateAndCopyData(mInfo,
mImageContainer,
aSample->mOffset,
aSample->mTime,
aSample->mDuration,
b,
aSample->mKeyframe,
aSample->mTimecode,
mInfo.ScaledImageRect(img->d_w,
img->d_h));
if (!v) {
LOG(
"Image allocation error source %ux%u display %ux%u picture %ux%u",
img->d_w, img->d_h, mInfo.mDisplay.width, mInfo.mDisplay.height,
mInfo.mImage.width, mInfo.mImage.height);
return MediaResult(NS_ERROR_OUT_OF_MEMORY, __func__);
}
mCallback->Output(v);
}
return NS_OK;
}
void
AOMDecoder::ProcessDecode(MediaRawData* aSample)
{
MOZ_ASSERT(mTaskQueue->IsCurrentThreadIn());
if (mIsFlushing) {
return;
}
MediaResult rv = DoDecode(aSample);
if (NS_FAILED(rv)) {
mCallback->Error(rv);
} else {
mCallback->InputExhausted();
}
}
void
AOMDecoder::Input(MediaRawData* aSample)
{
MOZ_ASSERT(mCallback->OnReaderTaskQueue());
mTaskQueue->Dispatch(NewRunnableMethod<RefPtr<MediaRawData>>(
this, &AOMDecoder::ProcessDecode, aSample));
}
void
AOMDecoder::ProcessDrain()
{
MOZ_ASSERT(mTaskQueue->IsCurrentThreadIn());
mCallback->DrainComplete();
}
void
AOMDecoder::Drain()
{
MOZ_ASSERT(mCallback->OnReaderTaskQueue());
mTaskQueue->Dispatch(NewRunnableMethod(this, &AOMDecoder::ProcessDrain));
}
/* static */
bool
AOMDecoder::IsAV1(const nsACString& aMimeType)
{
return aMimeType.EqualsLiteral("video/webm; codecs=av1")
|| aMimeType.EqualsLiteral("video/av1");
}
/* static */
bool
AOMDecoder::IsSupportedCodec(const nsAString& aCodecType)
{
// While AV1 is under development, we describe support
// for a specific aom commit hash so sites can check
// compatibility.
auto version = NS_ConvertASCIItoUTF16("av1.experimental.");
version.AppendLiteral("4d668d7feb1f8abd809d1bca0418570a7f142a36");
return aCodecType.EqualsLiteral("av1") ||
aCodecType.Equals(version);
}
/* static */
bool
AOMDecoder::IsKeyframe(Span<const uint8_t> aBuffer) {
aom_codec_stream_info_t info;
PodZero(&info);
aom_codec_peek_stream_info(aom_codec_av1_dx(),
aBuffer.Elements(),
aBuffer.Length(),
&info);
return bool(info.is_kf);
}
/* static */
nsIntSize
AOMDecoder::GetFrameSize(Span<const uint8_t> aBuffer) {
aom_codec_stream_info_t info;
PodZero(&info);
aom_codec_peek_stream_info(aom_codec_av1_dx(),
aBuffer.Elements(),
aBuffer.Length(),
&info);
return nsIntSize(info.w, info.h);
}
} // namespace mozilla
#undef LOG
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