1 /*
2  *  Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef API_TEST_VIDEO_FUNCTION_VIDEO_DECODER_FACTORY_H_
12 #define API_TEST_VIDEO_FUNCTION_VIDEO_DECODER_FACTORY_H_
13 
14 #include <functional>
15 #include <memory>
16 #include <utility>
17 #include <vector>
18 
19 #include "api/video_codecs/sdp_video_format.h"
20 #include "api/video_codecs/video_decoder_factory.h"
21 #include "rtc_base/checks.h"
22 
23 namespace webrtc {
24 namespace test {
25 
26 // A decoder factory producing decoders by calling a supplied create function.
27 class FunctionVideoDecoderFactory final : public VideoDecoderFactory {
28  public:
FunctionVideoDecoderFactory(std::function<std::unique_ptr<VideoDecoder> ()> create)29   explicit FunctionVideoDecoderFactory(
30       std::function<std::unique_ptr<VideoDecoder>()> create)
31       : create_([create = std::move(create)](const SdpVideoFormat&) {
32           return create();
33         }) {}
FunctionVideoDecoderFactory(std::function<std::unique_ptr<VideoDecoder> (const SdpVideoFormat &)> create)34   explicit FunctionVideoDecoderFactory(
35       std::function<std::unique_ptr<VideoDecoder>(const SdpVideoFormat&)>
36           create)
37       : create_(std::move(create)) {}
FunctionVideoDecoderFactory(std::function<std::unique_ptr<VideoDecoder> ()> create,std::vector<SdpVideoFormat> sdp_video_formats)38   FunctionVideoDecoderFactory(
39       std::function<std::unique_ptr<VideoDecoder>()> create,
40       std::vector<SdpVideoFormat> sdp_video_formats)
41       : create_([create = std::move(create)](const SdpVideoFormat&) {
42           return create();
43         }),
44         sdp_video_formats_(std::move(sdp_video_formats)) {}
45 
GetSupportedFormats()46   std::vector<SdpVideoFormat> GetSupportedFormats() const override {
47     return sdp_video_formats_;
48   }
49 
CreateVideoDecoder(const SdpVideoFormat & format)50   std::unique_ptr<VideoDecoder> CreateVideoDecoder(
51       const SdpVideoFormat& format) override {
52     return create_(format);
53   }
54 
55  private:
56   const std::function<std::unique_ptr<VideoDecoder>(const SdpVideoFormat&)>
57       create_;
58   const std::vector<SdpVideoFormat> sdp_video_formats_;
59 };
60 
61 }  // namespace test
62 }  // namespace webrtc
63 
64 #endif  // API_TEST_VIDEO_FUNCTION_VIDEO_DECODER_FACTORY_H_
65