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/*
* libjingle
* Copyright 2012 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/media/base/capturemanager.h"
#include "talk/media/base/fakevideocapturer.h"
#include "talk/media/base/fakevideorenderer.h"
#include "webrtc/base/arraysize.h"
#include "webrtc/base/gunit.h"
#include "webrtc/base/sigslot.h"
const int kMsCallbackWait = 50;
const int kFps = 30;
const cricket::VideoFormatPod kCameraFormats[] = {
{640, 480, cricket::VideoFormat::FpsToInterval(kFps), cricket::FOURCC_I420},
{320, 240, cricket::VideoFormat::FpsToInterval(kFps), cricket::FOURCC_I420}
};
class CaptureManagerTest : public ::testing::Test, public sigslot::has_slots<> {
public:
CaptureManagerTest()
: capture_manager_(),
callback_count_(0),
format_vga_(kCameraFormats[0]),
format_qvga_(kCameraFormats[1]) {
}
virtual void SetUp() {
PopulateSupportedFormats();
capture_state_ = cricket::CS_STOPPED;
capture_manager_.SignalCapturerStateChange.connect(
this,
&CaptureManagerTest::OnCapturerStateChange);
}
void PopulateSupportedFormats() {
std::vector<cricket::VideoFormat> formats;
for (int i = 0; i < arraysize(kCameraFormats); ++i) {
formats.push_back(cricket::VideoFormat(kCameraFormats[i]));
}
video_capturer_.ResetSupportedFormats(formats);
}
int NumFramesRendered() { return video_renderer_.num_rendered_frames(); }
bool WasRenderedResolution(cricket::VideoFormat format) {
return format.width == video_renderer_.width() &&
format.height == video_renderer_.height();
}
cricket::CaptureState capture_state() { return capture_state_; }
int callback_count() { return callback_count_; }
void OnCapturerStateChange(cricket::VideoCapturer* capturer,
cricket::CaptureState capture_state) {
capture_state_ = capture_state;
++callback_count_;
}
protected:
cricket::FakeVideoCapturer video_capturer_;
cricket::FakeVideoRenderer video_renderer_;
cricket::CaptureManager capture_manager_;
cricket::CaptureState capture_state_;
int callback_count_;
cricket::VideoFormat format_vga_;
cricket::VideoFormat format_qvga_;
};
// Incorrect use cases.
TEST_F(CaptureManagerTest, InvalidCallOrder) {
// Capturer must be registered before any of these calls.
EXPECT_FALSE(capture_manager_.AddVideoRenderer(&video_capturer_,
&video_renderer_));
}
TEST_F(CaptureManagerTest, InvalidAddingRemoving) {
EXPECT_FALSE(capture_manager_.StopVideoCapture(&video_capturer_,
cricket::VideoFormat()));
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_vga_));
EXPECT_EQ_WAIT(cricket::CS_RUNNING, capture_state(), kMsCallbackWait);
EXPECT_EQ(1, callback_count());
EXPECT_FALSE(capture_manager_.AddVideoRenderer(&video_capturer_, NULL));
EXPECT_FALSE(capture_manager_.RemoveVideoRenderer(&video_capturer_,
&video_renderer_));
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_, format_vga_));
}
// Valid use cases
TEST_F(CaptureManagerTest, KeepFirstResolutionHigh) {
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_vga_));
EXPECT_EQ_WAIT(cricket::CS_RUNNING, capture_state(), kMsCallbackWait);
EXPECT_EQ(1, callback_count());
EXPECT_TRUE(capture_manager_.AddVideoRenderer(&video_capturer_,
&video_renderer_));
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(1, NumFramesRendered());
// Renderer should be fed frames with the resolution of format_vga_.
EXPECT_TRUE(WasRenderedResolution(format_vga_));
// Start again with one more format.
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_qvga_));
// Existing renderers should be fed frames with the resolution of format_vga_.
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_TRUE(WasRenderedResolution(format_vga_));
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_, format_vga_));
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_,
format_qvga_));
EXPECT_FALSE(capture_manager_.StopVideoCapture(&video_capturer_,
format_vga_));
EXPECT_FALSE(capture_manager_.StopVideoCapture(&video_capturer_,
format_qvga_));
}
// Should pick the lowest resolution as the highest resolution is not chosen
// until after capturing has started. This ensures that no particular resolution
// is favored over others.
TEST_F(CaptureManagerTest, KeepFirstResolutionLow) {
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_qvga_));
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_vga_));
EXPECT_TRUE(capture_manager_.AddVideoRenderer(&video_capturer_,
&video_renderer_));
EXPECT_EQ_WAIT(1, callback_count(), kMsCallbackWait);
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(1, NumFramesRendered());
EXPECT_TRUE(WasRenderedResolution(format_qvga_));
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_,
format_qvga_));
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_,
format_vga_));
}
// Ensure that the reference counting is working when multiple start and
// multiple stop calls are made.
TEST_F(CaptureManagerTest, MultipleStartStops) {
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_vga_));
// Add video capturer but with different format.
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_qvga_));
EXPECT_EQ_WAIT(cricket::CS_RUNNING, capture_state(), kMsCallbackWait);
EXPECT_EQ(1, callback_count());
EXPECT_TRUE(capture_manager_.AddVideoRenderer(&video_capturer_,
&video_renderer_));
// Ensure that a frame can be captured when two start calls have been made.
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(1, NumFramesRendered());
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_, format_vga_));
// Video should still render since there has been two start calls but only
// one stop call.
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(2, NumFramesRendered());
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_,
format_qvga_));
EXPECT_EQ_WAIT(cricket::CS_STOPPED, capture_state(), kMsCallbackWait);
EXPECT_EQ(2, callback_count());
// Last stop call should fail as it is one more than the number of start
// calls.
EXPECT_FALSE(capture_manager_.StopVideoCapture(&video_capturer_,
format_vga_));
}
TEST_F(CaptureManagerTest, TestForceRestart) {
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_qvga_));
EXPECT_TRUE(capture_manager_.AddVideoRenderer(&video_capturer_,
&video_renderer_));
EXPECT_EQ_WAIT(1, callback_count(), kMsCallbackWait);
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(1, NumFramesRendered());
EXPECT_TRUE(WasRenderedResolution(format_qvga_));
// Now restart with vga.
EXPECT_TRUE(capture_manager_.RestartVideoCapture(
&video_capturer_, format_qvga_, format_vga_,
cricket::CaptureManager::kForceRestart));
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(2, NumFramesRendered());
EXPECT_TRUE(WasRenderedResolution(format_vga_));
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_,
format_vga_));
}
TEST_F(CaptureManagerTest, TestRequestRestart) {
EXPECT_TRUE(capture_manager_.StartVideoCapture(&video_capturer_,
format_vga_));
EXPECT_TRUE(capture_manager_.AddVideoRenderer(&video_capturer_,
&video_renderer_));
EXPECT_EQ_WAIT(1, callback_count(), kMsCallbackWait);
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(1, NumFramesRendered());
EXPECT_TRUE(WasRenderedResolution(format_vga_));
// Now request restart with qvga.
EXPECT_TRUE(capture_manager_.RestartVideoCapture(
&video_capturer_, format_vga_, format_qvga_,
cricket::CaptureManager::kRequestRestart));
EXPECT_TRUE(video_capturer_.CaptureFrame());
EXPECT_EQ(2, NumFramesRendered());
EXPECT_TRUE(WasRenderedResolution(format_vga_));
EXPECT_TRUE(capture_manager_.StopVideoCapture(&video_capturer_,
format_qvga_));
}
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