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Diffstat (limited to 'lib/yuv_video_node.cpp')
| -rw-r--r-- | lib/yuv_video_node.cpp | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/lib/yuv_video_node.cpp b/lib/yuv_video_node.cpp deleted file mode 100644 index e6c0c7da9..000000000 --- a/lib/yuv_video_node.cpp +++ /dev/null @@ -1,274 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ -#include "yuv_video_node.h" - -#include <QtQuick/qsgtexture.h> - -class YUVVideoMaterialShader : public QSGMaterialShader -{ -public: - virtual void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) Q_DECL_OVERRIDE; - - virtual char const *const *attributeNames() const Q_DECL_OVERRIDE { - static const char *names[] = { - "a_position", - "a_texCoord", - 0 - }; - return names; - } - -protected: - virtual const char *vertexShader() const Q_DECL_OVERRIDE { - // Keep in sync with cc::VertexShaderPosTexYUVStretch - const char *shader = - "attribute highp vec4 a_position;\n" - "attribute mediump vec2 a_texCoord;\n" - "uniform highp mat4 matrix;\n" - "varying mediump vec2 v_texCoord;\n" - "uniform mediump vec2 texScale;\n" - "void main() {\n" - " gl_Position = matrix * a_position;\n" - " v_texCoord = a_texCoord * texScale;\n" - "}"; - return shader; - } - - virtual const char *fragmentShader() const Q_DECL_OVERRIDE { - // Keep in sync with cc::FragmentShaderYUVVideo - static const char *shader = - "varying mediump vec2 v_texCoord;\n" - "uniform sampler2D y_texture;\n" - "uniform sampler2D u_texture;\n" - "uniform sampler2D v_texture;\n" - "uniform lowp float alpha;\n" - "uniform lowp vec3 yuv_adj;\n" - "uniform lowp mat3 yuv_matrix;\n" - "void main() {\n" - " lowp float y_raw = texture2D(y_texture, v_texCoord).x;\n" - " lowp float u_unsigned = texture2D(u_texture, v_texCoord).x;\n" - " lowp float v_unsigned = texture2D(v_texture, v_texCoord).x;\n" - " lowp vec3 yuv = vec3(y_raw, u_unsigned, v_unsigned) + yuv_adj;\n" - " lowp vec3 rgb = yuv_matrix * yuv;\n" - " gl_FragColor = vec4(rgb, 1.0) * alpha;\n" - "}"; - return shader; - } - - virtual void initialize() Q_DECL_OVERRIDE { - m_id_matrix = program()->uniformLocation("matrix"); - m_id_texScale = program()->uniformLocation("texScale"); - m_id_yTexture = program()->uniformLocation("y_texture"); - m_id_uTexture = program()->uniformLocation("u_texture"); - m_id_vTexture = program()->uniformLocation("v_texture"); - m_id_yuvMatrix = program()->uniformLocation("yuv_matrix"); - m_id_yuvAdjust = program()->uniformLocation("yuv_adj"); - m_id_opacity = program()->uniformLocation("alpha"); - } - - int m_id_matrix; - int m_id_texScale; - int m_id_yTexture; - int m_id_uTexture; - int m_id_vTexture; - int m_id_yuvMatrix; - int m_id_yuvAdjust; - int m_id_opacity; -}; - -class YUVAVideoMaterialShader : public YUVVideoMaterialShader -{ - virtual void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) Q_DECL_OVERRIDE; - -protected: - virtual const char *fragmentShader() const Q_DECL_OVERRIDE { - // Keep in sync with cc::FragmentShaderYUVAVideo - static const char *shader = - // "precision mediump float;\n" - // "precision mediump int;\n" - "varying mediump vec2 v_texCoord;\n" - "uniform sampler2D y_texture;\n" - "uniform sampler2D u_texture;\n" - "uniform sampler2D v_texture;\n" - "uniform sampler2D a_texture;\n" - "uniform lowp float alpha;\n" - "uniform lowp vec3 yuv_adj;\n" - "uniform lowp mat3 yuv_matrix;\n" - "void main() {\n" - " lowp float y_raw = texture2D(y_texture, v_texCoord).x;\n" - " lowp float u_unsigned = texture2D(u_texture, v_texCoord).x;\n" - " lowp float v_unsigned = texture2D(v_texture, v_texCoord).x;\n" - " lowp float a_raw = texture2D(a_texture, v_texCoord).x;\n" - " lowp vec3 yuv = vec3(y_raw, u_unsigned, v_unsigned) + yuv_adj;\n" - " lowp vec3 rgb = yuv_matrix * yuv;\n" - " gl_FragColor = vec4(rgb, 1.0) * (alpha * a_raw);\n" - "}"; - return shader; - } - - virtual void initialize() Q_DECL_OVERRIDE { - // YUVVideoMaterialShader has a subset of the uniforms. - YUVVideoMaterialShader::initialize(); - m_id_aTexture = program()->uniformLocation("a_texture"); - } - - int m_id_aTexture; -}; - -void YUVVideoMaterialShader::updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) -{ - Q_UNUSED(oldMaterial); - - YUVVideoMaterial *mat = static_cast<YUVVideoMaterial *>(newMaterial); - program()->setUniformValue(m_id_yTexture, 0); - program()->setUniformValue(m_id_uTexture, 1); - program()->setUniformValue(m_id_vTexture, 2); - - glActiveTexture(GL_TEXTURE1); - mat->m_uTexture->bind(); - glActiveTexture(GL_TEXTURE2); - mat->m_vTexture->bind(); - glActiveTexture(GL_TEXTURE0); // Finish with 0 as default texture unit - mat->m_yTexture->bind(); - - program()->setUniformValue(m_id_texScale, mat->m_texScale); - - // These values are magic numbers that are used in the transformation from YUV - // to RGB color values. They are taken from the following webpage: - // http://www.fourcc.org/fccyvrgb.php - const float yuv_to_rgb[9] = { - 1.164f, 0.0f, 1.596f, - 1.164f, -.391f, -.813f, - 1.164f, 2.018f, 0.0f, - }; - const QMatrix3x3 yuvMatrix(yuv_to_rgb); - - // These values map to 16, 128, and 128 respectively, and are computed - // as a fraction over 256 (e.g. 16 / 256 = 0.0625). - // They are used in the YUV to RGBA conversion formula: - // Y - 16 : Gives 16 values of head and footroom for overshooting - // U - 128 : Turns unsigned U into signed U [-128,127] - // V - 128 : Turns unsigned V into signed V [-128,127] - const QVector3D yuvAdjust(-0.0625f, -0.5f, -0.5f); - program()->setUniformValue(m_id_yuvMatrix, yuvMatrix); - program()->setUniformValue(m_id_yuvAdjust, yuvAdjust); - - if (state.isOpacityDirty()) - program()->setUniformValue(m_id_opacity, state.opacity()); - - if (state.isMatrixDirty()) - program()->setUniformValue(m_id_matrix, state.combinedMatrix()); -} - -void YUVAVideoMaterialShader::updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) -{ - YUVVideoMaterialShader::updateState(state, newMaterial, oldMaterial); - - YUVAVideoMaterial *mat = static_cast<YUVAVideoMaterial *>(newMaterial); - program()->setUniformValue(m_id_aTexture, 3); - - glActiveTexture(GL_TEXTURE3); - mat->m_aTexture->bind(); - - // Reset the default texture unit. - glActiveTexture(GL_TEXTURE0); -} - - -YUVVideoMaterial::YUVVideoMaterial(QSGTexture *yTexture, QSGTexture *uTexture, QSGTexture *vTexture, const QSizeF &texScale) - : m_yTexture(yTexture) - , m_uTexture(uTexture) - , m_vTexture(vTexture) - , m_texScale(texScale) -{ -} - -QSGMaterialShader *YUVVideoMaterial::createShader() const -{ - return new YUVVideoMaterialShader; -} - -int YUVVideoMaterial::compare(const QSGMaterial *other) const -{ - const YUVVideoMaterial *m = static_cast<const YUVVideoMaterial *>(other); - if (int diff = m_yTexture->textureId() - m->m_yTexture->textureId()) - return diff; - if (int diff = m_uTexture->textureId() - m->m_uTexture->textureId()) - return diff; - return m_vTexture->textureId() - m->m_vTexture->textureId(); -} - -YUVAVideoMaterial::YUVAVideoMaterial(QSGTexture *yTexture, QSGTexture *uTexture, QSGTexture *vTexture, QSGTexture *aTexture, const QSizeF &texScale) - : YUVVideoMaterial(yTexture, uTexture, vTexture, texScale) - , m_aTexture(aTexture) -{ - setFlag(Blending, aTexture); -} - -QSGMaterialShader *YUVAVideoMaterial::createShader() const -{ - return new YUVAVideoMaterialShader; -} - -int YUVAVideoMaterial::compare(const QSGMaterial *other) const -{ - if (int diff = YUVVideoMaterial::compare(other)) - return diff; - const YUVAVideoMaterial *m = static_cast<const YUVAVideoMaterial *>(other); - return (m_aTexture ? m_aTexture->textureId() : 0) - (m->m_aTexture ? m->m_aTexture->textureId() : 0); -} - -YUVVideoNode::YUVVideoNode(QSGTexture *yTexture, QSGTexture *uTexture, QSGTexture *vTexture, QSGTexture *aTexture, const QSizeF &texScale) - : m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4) -{ - setGeometry(&m_geometry); - setFlag(QSGNode::OwnsMaterial); - if (aTexture) - m_material = new YUVAVideoMaterial(yTexture, uTexture, vTexture, aTexture, texScale); - else - m_material = new YUVVideoMaterial(yTexture, uTexture, vTexture, texScale); - setMaterial(m_material); -} - -void YUVVideoNode::setRect(const QRectF &rect) -{ - QSGGeometry::updateTexturedRectGeometry(geometry(), rect, QRectF(0, 0, 1, 1)); -} |