blob: a5e47848396c9cb6e692b375d88463c73b3f23e0 [file] [log] [blame]
/*
* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/video_coding/codecs/av1/dav1d_decoder.h"
#include <algorithm>
#include "api/scoped_refptr.h"
#include "api/video/encoded_image.h"
#include "api/video/i420_buffer.h"
#include "common_video/include/video_frame_buffer_pool.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "rtc_base/logging.h"
#include "third_party/dav1d/libdav1d/include/dav1d/dav1d.h"
#include "third_party/libyuv/include/libyuv/convert.h"
namespace webrtc {
namespace {
class Dav1dDecoder : public VideoDecoder {
public:
Dav1dDecoder();
Dav1dDecoder(const Dav1dDecoder&) = delete;
Dav1dDecoder& operator=(const Dav1dDecoder&) = delete;
~Dav1dDecoder() override;
bool Configure(const Settings& settings) override;
int32_t Decode(const EncodedImage& encoded_image,
bool missing_frames,
int64_t render_time_ms) override;
int32_t RegisterDecodeCompleteCallback(
DecodedImageCallback* callback) override;
int32_t Release() override;
DecoderInfo GetDecoderInfo() const override;
const char* ImplementationName() const override;
private:
VideoFrameBufferPool buffer_pool_;
Dav1dContext* context_ = nullptr;
DecodedImageCallback* decode_complete_callback_ = nullptr;
};
class ScopedDav1dData {
public:
~ScopedDav1dData() { dav1d_data_unref(&data_); }
Dav1dData& Data() { return data_; }
private:
Dav1dData data_ = {};
};
class ScopedDav1dPicture {
public:
~ScopedDav1dPicture() { dav1d_picture_unref(&picture_); }
Dav1dPicture& Picture() { return picture_; }
private:
Dav1dPicture picture_ = {};
};
constexpr char kDav1dName[] = "dav1d";
// Calling `dav1d_data_wrap` requires a `free_callback` to be registered.
void NullFreeCallback(const uint8_t* buffer, void* opaque) {}
Dav1dDecoder::Dav1dDecoder()
: buffer_pool_(/*zero_initialize=*/false, /*max_number_of_buffers=*/150) {}
Dav1dDecoder::~Dav1dDecoder() {
Release();
}
bool Dav1dDecoder::Configure(const Settings& settings) {
Dav1dSettings s;
dav1d_default_settings(&s);
s.n_threads = std::max(2, settings.number_of_cores());
s.max_frame_delay = 1; // For low latency decoding.
s.all_layers = 0; // Don't output a frame for every spatial layer.
s.operating_point = 31; // Decode all operating points.
return dav1d_open(&context_, &s) == 0;
}
int32_t Dav1dDecoder::RegisterDecodeCompleteCallback(
DecodedImageCallback* decode_complete_callback) {
decode_complete_callback_ = decode_complete_callback;
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t Dav1dDecoder::Release() {
dav1d_close(&context_);
if (context_ != nullptr) {
return WEBRTC_VIDEO_CODEC_MEMORY;
}
buffer_pool_.Release();
return WEBRTC_VIDEO_CODEC_OK;
}
VideoDecoder::DecoderInfo Dav1dDecoder::GetDecoderInfo() const {
DecoderInfo info;
info.implementation_name = kDav1dName;
info.is_hardware_accelerated = false;
return info;
}
const char* Dav1dDecoder::ImplementationName() const {
return kDav1dName;
}
int32_t Dav1dDecoder::Decode(const EncodedImage& encoded_image,
bool /*missing_frames*/,
int64_t /*render_time_ms*/) {
if (!context_ || decode_complete_callback_ == nullptr) {
return WEBRTC_VIDEO_CODEC_UNINITIALIZED;
}
ScopedDav1dData scoped_dav1d_data;
Dav1dData& dav1d_data = scoped_dav1d_data.Data();
dav1d_data_wrap(&dav1d_data, encoded_image.data(), encoded_image.size(),
/*free_callback=*/&NullFreeCallback,
/*user_data=*/nullptr);
if (int decode_res = dav1d_send_data(context_, &dav1d_data)) {
RTC_LOG(LS_WARNING)
<< "Dav1dDecoder::Decode decoding failed with error code "
<< decode_res;
return WEBRTC_VIDEO_CODEC_ERROR;
}
ScopedDav1dPicture scoped_dav1d_picture;
Dav1dPicture& dav1d_picture = scoped_dav1d_picture.Picture();
if (int get_picture_res = dav1d_get_picture(context_, &dav1d_picture)) {
RTC_LOG(LS_WARNING)
<< "Dav1dDecoder::Decode getting picture failed with error code "
<< get_picture_res;
return WEBRTC_VIDEO_CODEC_ERROR;
}
// Only accept I420 pixel format and 8 bit depth.
if (dav1d_picture.p.layout != DAV1D_PIXEL_LAYOUT_I420 ||
dav1d_picture.p.bpc != 8) {
return WEBRTC_VIDEO_CODEC_ERROR;
}
rtc::scoped_refptr<I420Buffer> buffer =
buffer_pool_.CreateI420Buffer(dav1d_picture.p.w, dav1d_picture.p.h);
if (!buffer.get()) {
RTC_LOG(LS_WARNING)
<< "Dav1dDecoder::Decode failed to get frame from the buffer pool.";
return WEBRTC_VIDEO_CODEC_ERROR;
}
uint8_t* y_data = static_cast<uint8_t*>(dav1d_picture.data[0]);
uint8_t* u_data = static_cast<uint8_t*>(dav1d_picture.data[1]);
uint8_t* v_data = static_cast<uint8_t*>(dav1d_picture.data[2]);
int y_stride = dav1d_picture.stride[0];
int uv_stride = dav1d_picture.stride[1];
libyuv::I420Copy(y_data, y_stride, //
u_data, uv_stride, //
v_data, uv_stride, //
buffer->MutableDataY(), buffer->StrideY(), //
buffer->MutableDataU(), buffer->StrideU(), //
buffer->MutableDataV(), buffer->StrideV(), //
dav1d_picture.p.w, //
dav1d_picture.p.h); //
VideoFrame decoded_frame = VideoFrame::Builder()
.set_video_frame_buffer(buffer)
.set_timestamp_rtp(encoded_image.Timestamp())
.set_ntp_time_ms(encoded_image.ntp_time_ms_)
.set_color_space(encoded_image.ColorSpace())
.build();
decode_complete_callback_->Decoded(decoded_frame, absl::nullopt,
absl::nullopt);
return WEBRTC_VIDEO_CODEC_OK;
}
} // namespace
std::unique_ptr<VideoDecoder> CreateDav1dDecoder() {
return std::make_unique<Dav1dDecoder>();
}
} // namespace webrtc