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      1 /*
      2  * libjingle
      3  * Copyright 2013 Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <string>
     29 
     30 #include "talk/app/webrtc/remotevideocapturer.h"
     31 #include "talk/media/webrtc/webrtcvideoframe.h"
     32 #include "webrtc/base/gunit.h"
     33 
     34 using cricket::CaptureState;
     35 using cricket::VideoCapturer;
     36 using cricket::VideoFormat;
     37 using cricket::VideoFormatPod;
     38 using cricket::VideoFrame;
     39 
     40 static const int kMaxWaitMs = 1000;
     41 static const VideoFormatPod kTestFormat =
     42     {640, 480, FPS_TO_INTERVAL(30), cricket::FOURCC_ANY};
     43 
     44 class RemoteVideoCapturerTest : public testing::Test,
     45                                 public sigslot::has_slots<> {
     46  protected:
     47   RemoteVideoCapturerTest()
     48       : captured_frame_num_(0),
     49         capture_state_(cricket::CS_STOPPED) {}
     50 
     51   virtual void SetUp() {
     52     capturer_.SignalStateChange.connect(
     53         this, &RemoteVideoCapturerTest::OnStateChange);
     54     capturer_.SignalVideoFrame.connect(
     55         this, &RemoteVideoCapturerTest::OnVideoFrame);
     56   }
     57 
     58   ~RemoteVideoCapturerTest() {
     59     capturer_.SignalStateChange.disconnect(this);
     60     capturer_.SignalVideoFrame.disconnect(this);
     61   }
     62 
     63   int captured_frame_num() const {
     64     return captured_frame_num_;
     65   }
     66 
     67   CaptureState capture_state() const {
     68     return capture_state_;
     69   }
     70 
     71   webrtc::RemoteVideoCapturer capturer_;
     72 
     73  private:
     74   void OnStateChange(VideoCapturer* capturer,
     75                      CaptureState capture_state) {
     76     EXPECT_EQ(&capturer_, capturer);
     77     capture_state_ = capture_state;
     78   }
     79 
     80   void OnVideoFrame(VideoCapturer* capturer, const VideoFrame* frame) {
     81     EXPECT_EQ(&capturer_, capturer);
     82     ++captured_frame_num_;
     83   }
     84 
     85   int captured_frame_num_;
     86   CaptureState capture_state_;
     87 };
     88 
     89 TEST_F(RemoteVideoCapturerTest, StartStop) {
     90   // Start
     91   EXPECT_TRUE(
     92       capturer_.StartCapturing(VideoFormat(kTestFormat)));
     93   EXPECT_TRUE_WAIT((cricket::CS_RUNNING == capture_state()), kMaxWaitMs);
     94   EXPECT_EQ(VideoFormat(kTestFormat),
     95             *capturer_.GetCaptureFormat());
     96   EXPECT_TRUE(capturer_.IsRunning());
     97 
     98   // Stop
     99   capturer_.Stop();
    100   EXPECT_TRUE_WAIT((cricket::CS_STOPPED == capture_state()), kMaxWaitMs);
    101   EXPECT_TRUE(NULL == capturer_.GetCaptureFormat());
    102 }
    103 
    104 TEST_F(RemoteVideoCapturerTest, GetPreferredFourccs) {
    105   EXPECT_FALSE(capturer_.GetPreferredFourccs(NULL));
    106 
    107   std::vector<uint32_t> fourccs;
    108   EXPECT_TRUE(capturer_.GetPreferredFourccs(&fourccs));
    109   EXPECT_EQ(1u, fourccs.size());
    110   EXPECT_EQ(cricket::FOURCC_I420, fourccs.at(0));
    111 }
    112 
    113 TEST_F(RemoteVideoCapturerTest, GetBestCaptureFormat) {
    114   VideoFormat desired = VideoFormat(kTestFormat);
    115   EXPECT_FALSE(capturer_.GetBestCaptureFormat(desired, NULL));
    116 
    117   VideoFormat expected_format = VideoFormat(kTestFormat);
    118   expected_format.fourcc = cricket::FOURCC_I420;
    119   VideoFormat best_format;
    120   EXPECT_TRUE(capturer_.GetBestCaptureFormat(desired, &best_format));
    121   EXPECT_EQ(expected_format, best_format);
    122 }
    123 
    124 TEST_F(RemoteVideoCapturerTest, InputFrame) {
    125   EXPECT_EQ(0, captured_frame_num());
    126 
    127   cricket::WebRtcVideoFrame test_frame;
    128   capturer_.SignalVideoFrame(&capturer_, &test_frame);
    129   EXPECT_EQ(1, captured_frame_num());
    130   capturer_.SignalVideoFrame(&capturer_, &test_frame);
    131   EXPECT_EQ(2, captured_frame_num());
    132 }
    133