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/*
* libjingle
* Copyright 2011 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.
*/
#ifndef TALK_MEDIA_BASE_FAKEVIDEORENDERER_H_
#define TALK_MEDIA_BASE_FAKEVIDEORENDERER_H_
#include "talk/base/sigslot.h"
#include "talk/media/base/videoframe.h"
#include "talk/media/base/videorenderer.h"
namespace cricket {
// Faked video renderer that has a callback for actions on rendering.
class FakeVideoRenderer : public VideoRenderer {
public:
FakeVideoRenderer()
: errors_(0),
width_(0),
height_(0),
num_set_sizes_(0),
num_rendered_frames_(0),
black_frame_(false) {
}
virtual bool SetSize(int width, int height, int reserved) {
width_ = width;
height_ = height;
++num_set_sizes_;
SignalSetSize(width, height, reserved);
return true;
}
virtual bool RenderFrame(const VideoFrame* frame) {
// TODO(zhurunz) Check with VP8 team to see if we can remove this
// tolerance on Y values.
black_frame_ = CheckFrameColorYuv(6, 48, 128, 128, 128, 128, frame);
// Treat unexpected frame size as error.
if (!frame ||
frame->GetWidth() != static_cast<size_t>(width_) ||
frame->GetHeight() != static_cast<size_t>(height_)) {
++errors_;
return false;
}
++num_rendered_frames_;
SignalRenderFrame(frame);
return true;
}
int errors() const { return errors_; }
int width() const { return width_; }
int height() const { return height_; }
int num_set_sizes() const { return num_set_sizes_; }
int num_rendered_frames() const { return num_rendered_frames_; }
bool black_frame() const { return black_frame_; }
sigslot::signal3<int, int, int> SignalSetSize;
sigslot::signal1<const VideoFrame*> SignalRenderFrame;
private:
static bool CheckFrameColorYuv(uint8 y_min, uint8 y_max,
uint8 u_min, uint8 u_max,
uint8 v_min, uint8 v_max,
const cricket::VideoFrame* frame) {
if (!frame) {
return false;
}
// Y
size_t y_width = frame->GetWidth();
size_t y_height = frame->GetHeight();
const uint8* y_plane = frame->GetYPlane();
const uint8* y_pos = y_plane;
int32 y_pitch = frame->GetYPitch();
for (size_t i = 0; i < y_height; ++i) {
for (size_t j = 0; j < y_width; ++j) {
uint8 y_value = *(y_pos + j);
if (y_value < y_min || y_value > y_max) {
return false;
}
}
y_pos += y_pitch;
}
// U and V
size_t chroma_width = frame->GetChromaWidth();
size_t chroma_height = frame->GetChromaHeight();
const uint8* u_plane = frame->GetUPlane();
const uint8* v_plane = frame->GetVPlane();
const uint8* u_pos = u_plane;
const uint8* v_pos = v_plane;
int32 u_pitch = frame->GetUPitch();
int32 v_pitch = frame->GetVPitch();
for (size_t i = 0; i < chroma_height; ++i) {
for (size_t j = 0; j < chroma_width; ++j) {
uint8 u_value = *(u_pos + j);
if (u_value < u_min || u_value > u_max) {
return false;
}
uint8 v_value = *(v_pos + j);
if (v_value < v_min || v_value > v_max) {
return false;
}
}
u_pos += u_pitch;
v_pos += v_pitch;
}
return true;
}
int errors_;
int width_;
int height_;
int num_set_sizes_;
int num_rendered_frames_;
bool black_frame_;
};
} // namespace cricket
#endif // TALK_MEDIA_BASE_FAKEVIDEORENDERER_H_
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