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AVFoundation: don't use shared OpenGL contexts unless needed.

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We were always using shared OpenGL contexts to render media player
frames into an OpenGL texture. There's no need to do that when there
already is a current context on the current thread. This happens in
non-QtQuick cases, when the OpenGL thread is also the main thread.

Change-Id: Icb97ed49609c764263007a43b6bb481e23768111
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
This commit is contained in:
Yoann Lopes
2015-06-08 18:09:23 +02:00
parent 269c64f47a
commit 3cb698c0fc
1 changed files with 15 additions and 11 deletions
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26
src/plugins/avfoundation/mediaplayer/avfvideoframerenderer.mm
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@@ -50,19 +50,13 @@ AVFVideoFrameRenderer::AVFVideoFrameRenderer(QAbstractVideoSurface *surface, QOb
: QObject(parent)
, m_videoLayerRenderer(0)
, m_surface(surface)
, m_offscreenSurface(0)
, m_glContext(0)
, m_currentBuffer(1)
, m_isContextShared(true)
{
m_fbo[0] = 0;
m_fbo[1] = 0;
//Create Hidden QWindow surface to create context in this thread
m_offscreenSurface = new QWindow();
m_offscreenSurface->setSurfaceType(QWindow::OpenGLSurface);
//Needs geometry to be a valid surface, but size is not important
m_offscreenSurface->setGeometry(0, 0, 1, 1);
m_offscreenSurface->create();
}
AVFVideoFrameRenderer::~AVFVideoFrameRenderer()
@@ -94,7 +88,8 @@ GLuint AVFVideoFrameRenderer::renderLayerToTexture(AVPlayerLayer *layer)
return 0;
renderLayerToFBO(layer, fbo);
m_glContext->doneCurrent();
if (m_glContext)
m_glContext->doneCurrent();
return fbo->texture();
}
@@ -113,7 +108,8 @@ QImage AVFVideoFrameRenderer::renderLayerToImage(AVPlayerLayer *layer)
renderLayerToFBO(layer, fbo);
QImage fboImage = fbo->toImage();
m_glContext->doneCurrent();
if (m_glContext)
m_glContext->doneCurrent();
return fboImage;
}
@@ -125,7 +121,14 @@ QOpenGLFramebufferObject *AVFVideoFrameRenderer::initRenderer(AVPlayerLayer *lay
m_targetSize = QSize(layer.bounds.size.width, layer.bounds.size.height);
//Make sure we have an OpenGL context to make current
if (!m_glContext) {
if (!QOpenGLContext::currentContext() && !m_glContext) {
//Create Hidden QWindow surface to create context in this thread
m_offscreenSurface = new QWindow();
m_offscreenSurface->setSurfaceType(QWindow::OpenGLSurface);
//Needs geometry to be a valid surface, but size is not important
m_offscreenSurface->setGeometry(0, 0, 1, 1);
m_offscreenSurface->create();
//Create OpenGL context and set share context from surface
QOpenGLContext *shareContext = 0;
if (m_surface) {
@@ -151,7 +154,8 @@ QOpenGLFramebufferObject *AVFVideoFrameRenderer::initRenderer(AVPlayerLayer *lay
}
//Need current context
m_glContext->makeCurrent(m_offscreenSurface);
if (m_glContext)
m_glContext->makeCurrent(m_offscreenSurface);
//Create the CARenderer if needed
if (!m_videoLayerRenderer) {