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/*
* Copyright (c) 2018 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 "test/fake_vp8_decoder.h"
#include <stddef.h>
#include "absl/types/optional.h"
#include "api/scoped_refptr.h"
#include "api/video/i420_buffer.h"
#include "api/video/video_frame.h"
#include "api/video/video_frame_buffer.h"
#include "api/video/video_rotation.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "rtc_base/time_utils.h"
namespace webrtc {
namespace test {
namespace {
// Read width and height from the payload of the frame if it is a key frame the
// same way as the real VP8 decoder.
// FakeEncoder writes width, height and frame type.
void ParseFakeVp8(const unsigned char* data, int* width, int* height) {
bool key_frame = data[0] == 0;
if (key_frame) {
*width = ((data[7] << 8) + data[6]) & 0x3FFF;
*height = ((data[9] << 8) + data[8]) & 0x3FFF;
}
}
} // namespace
FakeVp8Decoder::FakeVp8Decoder() : callback_(nullptr), width_(0), height_(0) {}
bool FakeVp8Decoder::Configure(const Settings& settings) {
return true;
}
int32_t FakeVp8Decoder::Decode(const EncodedImage& input,
int64_t render_time_ms) {
constexpr size_t kMinPayLoadHeaderLength = 10;
if (input.size() < kMinPayLoadHeaderLength) {
return WEBRTC_VIDEO_CODEC_ERROR;
}
ParseFakeVp8(input.data(), &width_, &height_);
VideoFrame frame =
VideoFrame::Builder()
.set_video_frame_buffer(I420Buffer::Create(width_, height_))
.set_rotation(webrtc::kVideoRotation_0)
.set_timestamp_ms(render_time_ms)
.build();
frame.set_rtp_timestamp(input.RtpTimestamp());
frame.set_ntp_time_ms(input.ntp_time_ms_);
callback_->Decoded(frame, /*decode_time_ms=*/absl::nullopt,
/*qp=*/absl::nullopt);
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t FakeVp8Decoder::RegisterDecodeCompleteCallback(
DecodedImageCallback* callback) {
callback_ = callback;
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t FakeVp8Decoder::Release() {
return WEBRTC_VIDEO_CODEC_OK;
}
VideoDecoder::DecoderInfo FakeVp8Decoder::GetDecoderInfo() const {
DecoderInfo info;
info.implementation_name = kImplementationName;
info.is_hardware_accelerated = false;
return info;
}
const char* FakeVp8Decoder::ImplementationName() const {
return kImplementationName;
}
} // namespace test
} // namespace webrtc