2013-07-10 02:45:36 +02:00
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// libjingle
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// Copyright 2011 Google Inc.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// 3. The name of the author may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Implementation of CarbonVideoRenderer
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#include "talk/media/devices/carbonvideorenderer.h"
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2014-07-29 19:36:52 +02:00
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#include "webrtc/base/logging.h"
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2013-07-10 02:45:36 +02:00
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#include "talk/media/base/videocommon.h"
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#include "talk/media/base/videoframe.h"
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namespace cricket {
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CarbonVideoRenderer::CarbonVideoRenderer(int x, int y)
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: image_width_(0),
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image_height_(0),
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x_(x),
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y_(y),
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image_ref_(NULL),
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window_ref_(NULL) {
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}
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CarbonVideoRenderer::~CarbonVideoRenderer() {
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if (window_ref_) {
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DisposeWindow(window_ref_);
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}
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}
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// Called from the main event loop. All renderering needs to happen on
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// the main thread.
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OSStatus CarbonVideoRenderer::DrawEventHandler(EventHandlerCallRef handler,
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EventRef event,
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void* data) {
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OSStatus status = noErr;
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CarbonVideoRenderer* renderer = static_cast<CarbonVideoRenderer*>(data);
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if (renderer != NULL) {
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if (!renderer->DrawFrame()) {
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LOG(LS_ERROR) << "Failed to draw frame.";
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}
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}
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return status;
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}
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bool CarbonVideoRenderer::DrawFrame() {
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// Grab the image lock to make sure it is not changed why we'll draw it.
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rtc::CritScope cs(&image_crit_);
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if (image_.get() == NULL) {
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// Nothing to draw, just return.
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return true;
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}
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int width = image_width_;
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int height = image_height_;
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CGDataProviderRef provider =
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CGDataProviderCreateWithData(NULL, image_.get(), width * height * 4,
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NULL);
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CGColorSpaceRef color_space_ref = CGColorSpaceCreateDeviceRGB();
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CGBitmapInfo bitmap_info = kCGBitmapByteOrderDefault;
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CGColorRenderingIntent rendering_intent = kCGRenderingIntentDefault;
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CGImageRef image_ref = CGImageCreate(width, height, 8, 32, width * 4,
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color_space_ref, bitmap_info, provider,
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NULL, false, rendering_intent);
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CGDataProviderRelease(provider);
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if (image_ref == NULL) {
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return false;
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}
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CGContextRef context;
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SetPortWindowPort(window_ref_);
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if (QDBeginCGContext(GetWindowPort(window_ref_), &context) != noErr) {
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CGImageRelease(image_ref);
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return false;
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}
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Rect window_bounds;
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GetWindowPortBounds(window_ref_, &window_bounds);
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// Anchor the image to the top left corner.
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int x = 0;
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int y = window_bounds.bottom - CGImageGetHeight(image_ref);
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CGRect dst_rect = CGRectMake(x, y, CGImageGetWidth(image_ref),
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CGImageGetHeight(image_ref));
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CGContextDrawImage(context, dst_rect, image_ref);
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CGContextFlush(context);
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QDEndCGContext(GetWindowPort(window_ref_), &context);
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CGImageRelease(image_ref);
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return true;
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}
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bool CarbonVideoRenderer::SetSize(int width, int height, int reserved) {
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if (width != image_width_ || height != image_height_) {
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// Grab the image lock while changing its size.
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rtc::CritScope cs(&image_crit_);
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image_width_ = width;
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image_height_ = height;
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image_.reset(new uint8[width * height * 4]);
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memset(image_.get(), 255, width * height * 4);
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}
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return true;
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}
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bool CarbonVideoRenderer::RenderFrame(const VideoFrame* frame) {
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if (!frame) {
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return false;
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}
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{
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// Grab the image lock so we are not trashing up the image being drawn.
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rtc::CritScope cs(&image_crit_);
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frame->ConvertToRgbBuffer(cricket::FOURCC_ABGR,
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image_.get(),
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frame->GetWidth() * frame->GetHeight() * 4,
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frame->GetWidth() * 4);
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}
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// Trigger a repaint event for the whole window.
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Rect bounds;
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InvalWindowRect(window_ref_, GetWindowPortBounds(window_ref_, &bounds));
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return true;
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}
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bool CarbonVideoRenderer::Initialize() {
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OSStatus err;
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WindowAttributes attributes =
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kWindowStandardDocumentAttributes |
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kWindowLiveResizeAttribute |
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kWindowFrameworkScaledAttribute |
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kWindowStandardHandlerAttribute;
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struct Rect bounds;
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bounds.top = y_;
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bounds.bottom = 480;
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bounds.left = x_;
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bounds.right = 640;
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err = CreateNewWindow(kDocumentWindowClass, attributes,
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&bounds, &window_ref_);
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if (!window_ref_ || err != noErr) {
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LOG(LS_ERROR) << "CreateNewWindow failed, error code: " << err;
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return false;
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}
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static const EventTypeSpec event_spec = {
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kEventClassWindow,
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kEventWindowDrawContent
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};
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err = InstallWindowEventHandler(
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window_ref_,
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NewEventHandlerUPP(CarbonVideoRenderer::DrawEventHandler),
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GetEventTypeCount(event_spec),
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&event_spec,
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this,
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NULL);
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if (err != noErr) {
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LOG(LS_ERROR) << "Failed to install event handler, error code: " << err;
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return false;
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}
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SelectWindow(window_ref_);
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ShowWindow(window_ref_);
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return true;
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}
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} // namespace cricket
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