88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
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/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "test/fake_vp8_decoder.h"
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#include <stddef.h>
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#include "absl/types/optional.h"
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#include "api/scoped_refptr.h"
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#include "api/video/i420_buffer.h"
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#include "api/video/video_frame.h"
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#include "api/video/video_frame_buffer.h"
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#include "api/video/video_rotation.h"
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#include "modules/video_coding/include/video_error_codes.h"
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#include "rtc_base/time_utils.h"
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namespace webrtc {
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namespace test {
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namespace {
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// Read width and height from the payload of the frame if it is a key frame the
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// same way as the real VP8 decoder.
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// FakeEncoder writes width, height and frame type.
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void ParseFakeVp8(const unsigned char* data, int* width, int* height) {
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bool key_frame = data[0] == 0;
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if (key_frame) {
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*width = ((data[7] << 8) + data[6]) & 0x3FFF;
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*height = ((data[9] << 8) + data[8]) & 0x3FFF;
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}
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}
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} // namespace
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FakeVp8Decoder::FakeVp8Decoder() : callback_(nullptr), width_(0), height_(0) {}
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int32_t FakeVp8Decoder::InitDecode(const VideoCodec* config,
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int32_t number_of_cores) {
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return WEBRTC_VIDEO_CODEC_OK;
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}
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int32_t FakeVp8Decoder::Decode(const EncodedImage& input,
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bool missing_frames,
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int64_t render_time_ms) {
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constexpr size_t kMinPayLoadHeaderLength = 10;
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if (input.size() < kMinPayLoadHeaderLength) {
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return WEBRTC_VIDEO_CODEC_ERROR;
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}
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ParseFakeVp8(input.data(), &width_, &height_);
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VideoFrame frame =
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VideoFrame::Builder()
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.set_video_frame_buffer(I420Buffer::Create(width_, height_))
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.set_rotation(webrtc::kVideoRotation_0)
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.set_timestamp_ms(render_time_ms)
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.build();
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frame.set_timestamp(input.Timestamp());
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frame.set_ntp_time_ms(input.ntp_time_ms_);
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callback_->Decoded(frame, /*decode_time_ms=*/absl::nullopt,
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/*qp=*/absl::nullopt);
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return WEBRTC_VIDEO_CODEC_OK;
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}
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int32_t FakeVp8Decoder::RegisterDecodeCompleteCallback(
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DecodedImageCallback* callback) {
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callback_ = callback;
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return WEBRTC_VIDEO_CODEC_OK;
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}
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int32_t FakeVp8Decoder::Release() {
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return WEBRTC_VIDEO_CODEC_OK;
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}
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const char* FakeVp8Decoder::kImplementationName = "fake_vp8_decoder";
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const char* FakeVp8Decoder::ImplementationName() const {
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return kImplementationName;
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}
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} // namespace test
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} // namespace webrtc
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