Move VideoDecoderSoftwareFallbackWrapper from webrtc/video_decoder.h to webrtc/media/engine/

webrtc/video/video_decoder_unittest.cc

-/*
- *  Copyright (c) 2015 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 "webrtc/video_decoder.h"
-
-#include "webrtc/base/checks.h"
-#include "webrtc/modules/video_coding/include/video_error_codes.h"
-#include "webrtc/test/gtest.h"
-
-namespace webrtc {
-
-class VideoDecoderSoftwareFallbackWrapperTest : public ::testing::Test {
- protected:
-  VideoDecoderSoftwareFallbackWrapperTest()
-      : fallback_wrapper_(kVideoCodecVP8, &fake_decoder_) {}
-
-  class CountingFakeDecoder : public VideoDecoder {
-   public:
-    int32_t InitDecode(const VideoCodec* codec_settings,
-                       int32_t number_of_cores) override {
-      ++init_decode_count_;
-      return WEBRTC_VIDEO_CODEC_OK;
-    }
-
-    int32_t Decode(const EncodedImage& input_image,
-                   bool missing_frames,
-                   const RTPFragmentationHeader* fragmentation,
-                   const CodecSpecificInfo* codec_specific_info,
-                   int64_t render_time_ms) override {
-      ++decode_count_;
-      return decode_return_code_;
-    }
-
-    int32_t RegisterDecodeCompleteCallback(
-        DecodedImageCallback* callback) override {
-      decode_complete_callback_ = callback;
-      return WEBRTC_VIDEO_CODEC_OK;
-    }
-
-    int32_t Release() override {
-      ++release_count_;
-      return WEBRTC_VIDEO_CODEC_OK;
-    }
-
-    const char* ImplementationName() const override {
-      return "fake-decoder";
-    }
-
-    int init_decode_count_ = 0;
-    int decode_count_ = 0;
-    int32_t decode_return_code_ = WEBRTC_VIDEO_CODEC_OK;
-    DecodedImageCallback* decode_complete_callback_ = nullptr;
-    int release_count_ = 0;
-    int reset_count_ = 0;
-  };
-  CountingFakeDecoder fake_decoder_;
-  VideoDecoderSoftwareFallbackWrapper fallback_wrapper_;
-};
-
-TEST_F(VideoDecoderSoftwareFallbackWrapperTest, InitializesDecoder) {
-  VideoCodec codec = {};
-  fallback_wrapper_.InitDecode(&codec, 2);
-  EXPECT_EQ(1, fake_decoder_.init_decode_count_);
-}
-
-TEST_F(VideoDecoderSoftwareFallbackWrapperTest,
-       CanRecoverFromSoftwareFallback) {
-  VideoCodec codec = {};
-  fallback_wrapper_.InitDecode(&codec, 2);
-  // Unfortunately faking a VP8 frame is hard. Rely on no Decode -> using SW
-  // decoder.
-  fake_decoder_.decode_return_code_ = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
-  EncodedImage encoded_image;
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  EXPECT_EQ(1, fake_decoder_.decode_count_);
-
-  // Fail -> fake_decoder shouldn't be used anymore.
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  EXPECT_EQ(1, fake_decoder_.decode_count_)
-      << "Decoder used even though fallback should be active.";
-
-  // Should be able to recover on a keyframe.
-  encoded_image._frameType = kVideoFrameKey;
-  fake_decoder_.decode_return_code_ = WEBRTC_VIDEO_CODEC_OK;
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  EXPECT_EQ(2, fake_decoder_.decode_count_)
-      << "Wrapper did not try to decode a keyframe using registered decoder.";
-
-  encoded_image._frameType = kVideoFrameDelta;
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  EXPECT_EQ(3, fake_decoder_.decode_count_)
-      << "Decoder not used on future delta frames.";
-}
-
-TEST_F(VideoDecoderSoftwareFallbackWrapperTest, DoesNotFallbackOnEveryError) {
-  VideoCodec codec = {};
-  fallback_wrapper_.InitDecode(&codec, 2);
-  fake_decoder_.decode_return_code_ = WEBRTC_VIDEO_CODEC_ERROR;
-  EncodedImage encoded_image;
-  EXPECT_EQ(
-      fake_decoder_.decode_return_code_,
-      fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1));
-  EXPECT_EQ(1, fake_decoder_.decode_count_);
-
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  EXPECT_EQ(2, fake_decoder_.decode_count_)
-      << "Decoder should be active even though previous decode failed.";
-}
-
-TEST_F(VideoDecoderSoftwareFallbackWrapperTest, ForwardsReleaseCall) {
-  VideoCodec codec = {};
-  fallback_wrapper_.InitDecode(&codec, 2);
-  fallback_wrapper_.Release();
-  EXPECT_EQ(1, fake_decoder_.release_count_);
-
-  fake_decoder_.decode_return_code_ = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
-  EncodedImage encoded_image;
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  EXPECT_EQ(1, fake_decoder_.release_count_)
-      << "Decoder should not be released during fallback.";
-  fallback_wrapper_.Release();
-  EXPECT_EQ(2, fake_decoder_.release_count_);
-}
-
-// TODO(pbos): Fake a VP8 frame well enough to actually receive a callback from
-// the software decoder.
-TEST_F(VideoDecoderSoftwareFallbackWrapperTest,
-       ForwardsRegisterDecodeCompleteCallback) {
-  class FakeDecodedImageCallback : public DecodedImageCallback {
-    int32_t Decoded(VideoFrame& decodedImage) override { return 0; }
-    int32_t Decoded(
-        webrtc::VideoFrame& decodedImage, int64_t decode_time_ms) override {
-      RTC_NOTREACHED();
-      return -1;
-    }
-  } callback, callback2;
-
-  VideoCodec codec = {};
-  fallback_wrapper_.InitDecode(&codec, 2);
-  fallback_wrapper_.RegisterDecodeCompleteCallback(&callback);
-  EXPECT_EQ(&callback, fake_decoder_.decode_complete_callback_);
-
-  fake_decoder_.decode_return_code_ = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
-  EncodedImage encoded_image;
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  fallback_wrapper_.RegisterDecodeCompleteCallback(&callback2);
-  EXPECT_EQ(&callback2, fake_decoder_.decode_complete_callback_);
-}
-
-TEST_F(VideoDecoderSoftwareFallbackWrapperTest,
-       ReportsFallbackImplementationName) {
-  VideoCodec codec = {};
-  fallback_wrapper_.InitDecode(&codec, 2);
-
-  fake_decoder_.decode_return_code_ = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
-  EncodedImage encoded_image;
-  fallback_wrapper_.Decode(encoded_image, false, nullptr, nullptr, -1);
-  // Hard coded expected value since libvpx is the software implementation name
-  // for VP8. Change accordingly if the underlying implementation does.
-  EXPECT_STREQ("libvpx (fallback from: fake-decoder)",
-               fallback_wrapper_.ImplementationName());
-  fallback_wrapper_.Release();
-}
-
-}  // namespace webrtc