diff options
Diffstat (limited to 'src/plugins/android/src/common/qandroidvideorendercontrol.cpp')
-rw-r--r-- | src/plugins/android/src/common/qandroidvideorendercontrol.cpp | 167 |
1 files changed, 145 insertions, 22 deletions
diff --git a/src/plugins/android/src/common/qandroidvideorendercontrol.cpp b/src/plugins/android/src/common/qandroidvideorendercontrol.cpp index 5306fe918..55f71d735 100644 --- a/src/plugins/android/src/common/qandroidvideorendercontrol.cpp +++ b/src/plugins/android/src/common/qandroidvideorendercontrol.cpp @@ -49,22 +49,39 @@ #include <qcoreapplication.h> #include <qopenglcontext.h> #include <qopenglfunctions.h> +#include <qopenglshaderprogram.h> +#include <qopenglframebufferobject.h> QT_BEGIN_NAMESPACE -#define ExternalGLTextureHandle QAbstractVideoBuffer::HandleType(QAbstractVideoBuffer::UserHandle + 1) +static const GLfloat g_vertex_data[] = { + -1.f, 1.f, + 1.f, 1.f, + 1.f, -1.f, + -1.f, -1.f +}; + +static const GLfloat g_texture_data[] = { + 0.f, 0.f, + 1.f, 0.f, + 1.f, 1.f, + 0.f, 1.f +}; -TextureDeleter::~TextureDeleter() +OpenGLResourcesDeleter::~OpenGLResourcesDeleter() { - glDeleteTextures(1, &m_id); + glDeleteTextures(1, &m_textureID); + delete m_fbo; + delete m_program; } class AndroidTextureVideoBuffer : public QAbstractVideoBuffer { public: - AndroidTextureVideoBuffer(JSurfaceTexture *surface) - : QAbstractVideoBuffer(ExternalGLTextureHandle) - , m_surfaceTexture(surface) + AndroidTextureVideoBuffer(QAndroidVideoRendererControl *control) + : QAbstractVideoBuffer(GLTextureHandle) + , m_control(control) + , m_textureUpdated(false) { } @@ -76,18 +93,18 @@ public: QVariant handle() const { - if (m_data.isEmpty()) { + if (!m_textureUpdated) { // update the video texture (called from the render thread) - m_surfaceTexture->updateTexImage(); - m_data << (uint)m_surfaceTexture->textureID() << m_surfaceTexture->getTransformMatrix(); + m_control->renderFrameToFbo(); + m_textureUpdated = true; } - return m_data; + return m_control->m_fbo->texture(); } private: - mutable JSurfaceTexture *m_surfaceTexture; - mutable QVariantList m_data; + mutable QAndroidVideoRendererControl *m_control; + mutable bool m_textureUpdated; }; QAndroidVideoRendererControl::QAndroidVideoRendererControl(QObject *parent) @@ -97,7 +114,9 @@ QAndroidVideoRendererControl::QAndroidVideoRendererControl(QObject *parent) , m_surfaceTexture(0) , m_surfaceHolder(0) , m_externalTex(0) - , m_textureDeleter(0) + , m_fbo(0) + , m_program(0) + , m_glDeleter(0) { } @@ -117,8 +136,8 @@ QAndroidVideoRendererControl::~QAndroidVideoRendererControl() delete m_surfaceHolder; m_surfaceHolder = 0; } - if (m_textureDeleter) - m_textureDeleter->deleteLater(); + if (m_glDeleter) + m_glDeleter->deleteLater(); } QAbstractVideoSurface *QAndroidVideoRendererControl::surface() const @@ -162,7 +181,8 @@ bool QAndroidVideoRendererControl::initSurfaceTexture() // for the GL render thread to call us back to do it. if (QOpenGLContext::currentContext()) { glGenTextures(1, &m_externalTex); - m_textureDeleter = new TextureDeleter(m_externalTex); + m_glDeleter = new OpenGLResourcesDeleter; + m_glDeleter->setTexture(m_externalTex); } else if (!m_externalTex) { return false; } @@ -174,9 +194,9 @@ bool QAndroidVideoRendererControl::initSurfaceTexture() } else { delete m_surfaceTexture; m_surfaceTexture = 0; - m_textureDeleter->deleteLater(); + m_glDeleter->deleteLater(); m_externalTex = 0; - m_textureDeleter = 0; + m_glDeleter = 0; } return m_surfaceTexture != 0; @@ -208,6 +228,8 @@ jobject QAndroidVideoRendererControl::surfaceTexture() void QAndroidVideoRendererControl::setVideoSize(const QSize &size) { + QMutexLocker locker(&m_mutex); + if (m_nativeSize == size) return; @@ -228,7 +250,7 @@ void QAndroidVideoRendererControl::onFrameAvailable() if (!m_nativeSize.isValid() || !m_surface) return; - QAbstractVideoBuffer *buffer = new AndroidTextureVideoBuffer(m_surfaceTexture); + QAbstractVideoBuffer *buffer = new AndroidTextureVideoBuffer(this); QVideoFrame frame(buffer, m_nativeSize, QVideoFrame::Format_BGR32); if (m_surface->isActive() && (m_surface->surfaceFormat().pixelFormat() != frame.pixelFormat() @@ -237,8 +259,8 @@ void QAndroidVideoRendererControl::onFrameAvailable() } if (!m_surface->isActive()) { - QVideoSurfaceFormat format(frame.size(), frame.pixelFormat(), ExternalGLTextureHandle); - format.setScanLineDirection(QVideoSurfaceFormat::BottomToTop); + QVideoSurfaceFormat format(frame.size(), frame.pixelFormat(), + QAbstractVideoBuffer::GLTextureHandle); m_surface->start(format); } @@ -247,13 +269,114 @@ void QAndroidVideoRendererControl::onFrameAvailable() m_surface->present(frame); } +void QAndroidVideoRendererControl::renderFrameToFbo() +{ + QMutexLocker locker(&m_mutex); + + createGLResources(); + + m_surfaceTexture->updateTexImage(); + + // save current render states + GLboolean stencilTestEnabled; + GLboolean depthTestEnabled; + GLboolean scissorTestEnabled; + GLboolean blendEnabled; + glGetBooleanv(GL_STENCIL_TEST, &stencilTestEnabled); + glGetBooleanv(GL_DEPTH_TEST, &depthTestEnabled); + glGetBooleanv(GL_SCISSOR_TEST, &scissorTestEnabled); + glGetBooleanv(GL_BLEND, &blendEnabled); + + if (stencilTestEnabled) + glDisable(GL_STENCIL_TEST); + if (depthTestEnabled) + glDisable(GL_DEPTH_TEST); + if (scissorTestEnabled) + glDisable(GL_SCISSOR_TEST); + if (blendEnabled) + glDisable(GL_BLEND); + + m_fbo->bind(); + + glViewport(0, 0, m_nativeSize.width(), m_nativeSize.height()); + + m_program->bind(); + m_program->enableAttributeArray(0); + m_program->enableAttributeArray(1); + m_program->setUniformValue("frameTexture", GLuint(0)); + m_program->setUniformValue("texMatrix", m_surfaceTexture->getTransformMatrix()); + + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, g_vertex_data); + glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, g_texture_data); + + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + + m_program->disableAttributeArray(0); + m_program->disableAttributeArray(1); + + glBindTexture(GL_TEXTURE_EXTERNAL_OES, 0); + m_fbo->release(); + + // restore render states + if (stencilTestEnabled) + glEnable(GL_STENCIL_TEST); + if (depthTestEnabled) + glEnable(GL_DEPTH_TEST); + if (scissorTestEnabled) + glEnable(GL_SCISSOR_TEST); + if (blendEnabled) + glEnable(GL_BLEND); +} + +void QAndroidVideoRendererControl::createGLResources() +{ + if (!m_fbo || m_fbo->size() != m_nativeSize) { + delete m_fbo; + m_fbo = new QOpenGLFramebufferObject(m_nativeSize); + m_glDeleter->setFbo(m_fbo); + } + + if (!m_program) { + m_program = new QOpenGLShaderProgram; + + QOpenGLShader *vertexShader = new QOpenGLShader(QOpenGLShader::Vertex, m_program); + vertexShader->compileSourceCode("attribute highp vec4 vertexCoordsArray; \n" \ + "attribute highp vec2 textureCoordArray; \n" \ + "uniform highp mat4 texMatrix; \n" \ + "varying highp vec2 textureCoords; \n" \ + "void main(void) \n" \ + "{ \n" \ + " gl_Position = vertexCoordsArray; \n" \ + " textureCoords = (texMatrix * vec4(textureCoordArray, 0.0, 1.0)).xy; \n" \ + "}\n"); + m_program->addShader(vertexShader); + + QOpenGLShader *fragmentShader = new QOpenGLShader(QOpenGLShader::Fragment, m_program); + fragmentShader->compileSourceCode("#extension GL_OES_EGL_image_external : require \n" \ + "varying highp vec2 textureCoords; \n" \ + "uniform samplerExternalOES frameTexture; \n" \ + "void main() \n" \ + "{ \n" \ + " gl_FragColor = texture2D(frameTexture, textureCoords); \n" \ + "}\n"); + m_program->addShader(fragmentShader); + + m_program->bindAttributeLocation("vertexCoordsArray", 0); + m_program->bindAttributeLocation("textureCoordArray", 1); + m_program->link(); + + m_glDeleter->setShaderProgram(m_program); + } +} + void QAndroidVideoRendererControl::customEvent(QEvent *e) { if (e->type() == QEvent::User) { // This is running in the render thread (OpenGL enabled) if (!m_externalTex) { glGenTextures(1, &m_externalTex); - m_textureDeleter = new TextureDeleter(m_externalTex); // will be deleted in the correct thread + m_glDeleter = new OpenGLResourcesDeleter; // will cleanup GL resources in the correct thread + m_glDeleter->setTexture(m_externalTex); emit readyChanged(true); } } |