1 files changed, 93 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/fake_vp8_decoder.cc b/third_party/libwebrtc/test/fake_vp8_decoder.cc
new file mode 100644
index 0000000000..4c2f55a668
--- /dev/null
+++ b/third_party/libwebrtc/test/fake_vp8_decoder.cc
@@ -0,0 +1,93 @@
+/*
+ *  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,
+                               bool missing_frames,
+                               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_timestamp(input.Timestamp());
+  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;
+}
+
+const char* FakeVp8Decoder::kImplementationName = "fake_vp8_decoder";
+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