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Diffstat (limited to 'src/qtmultimediaquicktools/qsgvideonode_yuv.cpp')
| -rw-r--r-- | src/qtmultimediaquicktools/qsgvideonode_yuv.cpp | 460 |
1 files changed, 460 insertions, 0 deletions
diff --git a/src/qtmultimediaquicktools/qsgvideonode_yuv.cpp b/src/qtmultimediaquicktools/qsgvideonode_yuv.cpp new file mode 100644 index 000000000..fc40d659a --- /dev/null +++ b/src/qtmultimediaquicktools/qsgvideonode_yuv.cpp @@ -0,0 +1,460 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include "qsgvideonode_yuv.h" +#include <QtCore/qmutex.h> +#include <QtQuick/qsgtexturematerial.h> +#include <QtQuick/qsgmaterial.h> +#include <QtGui/QOpenGLContext> +#include <QtGui/QOpenGLFunctions> +#include <QtGui/QOpenGLShaderProgram> + +QT_BEGIN_NAMESPACE + +QList<QVideoFrame::PixelFormat> QSGVideoNodeFactory_YUV::supportedPixelFormats( + QAbstractVideoBuffer::HandleType handleType) const +{ + QList<QVideoFrame::PixelFormat> formats; + + if (handleType == QAbstractVideoBuffer::NoHandle) { + formats << QVideoFrame::Format_YUV420P << QVideoFrame::Format_YV12 + << QVideoFrame::Format_NV12 << QVideoFrame::Format_NV21; + } + + return formats; +} + +QSGVideoNode *QSGVideoNodeFactory_YUV::createNode(const QVideoSurfaceFormat &format) +{ + if (supportedPixelFormats(format.handleType()).contains(format.pixelFormat())) + return new QSGVideoNode_YUV(format); + + return 0; +} + + +class QSGVideoMaterialShader_YUV420 : public QSGMaterialShader +{ +public: + void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial); + + virtual char const *const *attributeNames() const { + static const char *names[] = { + "qt_VertexPosition", + "qt_VertexTexCoord", + 0 + }; + return names; + } + +protected: + + virtual const char *vertexShader() const { + const char *shader = + "uniform highp mat4 qt_Matrix; \n" + "uniform highp float yWidth; \n" + "uniform highp float uvWidth; \n" + "attribute highp vec4 qt_VertexPosition; \n" + "attribute highp vec2 qt_VertexTexCoord; \n" + "varying highp vec2 yTexCoord; \n" + "varying highp vec2 uvTexCoord; \n" + "void main() { \n" + " yTexCoord = qt_VertexTexCoord * vec2(yWidth, 1);\n" + " uvTexCoord = qt_VertexTexCoord * vec2(uvWidth, 1);\n" + " gl_Position = qt_Matrix * qt_VertexPosition; \n" + "}"; + return shader; + } + + virtual const char *fragmentShader() const { + static const char *shader = + "uniform sampler2D yTexture;" + "uniform sampler2D uTexture;" + "uniform sampler2D vTexture;" + "uniform mediump mat4 colorMatrix;" + "uniform lowp float opacity;" + "" + "varying highp vec2 yTexCoord;" + "varying highp vec2 uvTexCoord;" + "" + "void main()" + "{" + " mediump float Y = texture2D(yTexture, yTexCoord).r;" + " mediump float U = texture2D(uTexture, uvTexCoord).r;" + " mediump float V = texture2D(vTexture, uvTexCoord).r;" + " mediump vec4 color = vec4(Y, U, V, 1.);" + " gl_FragColor = colorMatrix * color * opacity;" + "}"; + return shader; + } + + virtual void initialize() { + m_id_matrix = program()->uniformLocation("qt_Matrix"); + m_id_yWidth = program()->uniformLocation("yWidth"); + m_id_uvWidth = program()->uniformLocation("uvWidth"); + m_id_yTexture = program()->uniformLocation("yTexture"); + m_id_uTexture = program()->uniformLocation("uTexture"); + m_id_vTexture = program()->uniformLocation("vTexture"); + m_id_colorMatrix = program()->uniformLocation("colorMatrix"); + m_id_opacity = program()->uniformLocation("opacity"); + } + + int m_id_matrix; + int m_id_yWidth; + int m_id_uvWidth; + int m_id_yTexture; + int m_id_uTexture; + int m_id_vTexture; + int m_id_colorMatrix; + int m_id_opacity; +}; + +class QSGVideoMaterialShader_NV_12_21 : public QSGVideoMaterialShader_YUV420 +{ +public: + QSGVideoMaterialShader_NV_12_21(bool isNV21) : m_isNV21(isNV21) { + } + + virtual void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial); + +protected: + + virtual const char *vertexShader() const { + const char *shader = + "uniform highp mat4 qt_Matrix; \n" + "uniform highp float yWidth; \n" + "attribute highp vec4 qt_VertexPosition; \n" + "attribute highp vec2 qt_VertexTexCoord; \n" + "varying highp vec2 yTexCoord; \n" + "void main() { \n" + " yTexCoord = qt_VertexTexCoord * vec2(yWidth, 1);\n" + " gl_Position = qt_Matrix * qt_VertexPosition; \n" + "}"; + return shader; + } + + virtual const char *fragmentShader() const { + static const char *shaderNV12 = + "uniform sampler2D yTexture; \n" + "uniform sampler2D uvTexture; \n" + "uniform mediump mat4 colorMatrix; \n" + "uniform lowp float opacity; \n" + "varying highp vec2 yTexCoord; \n" + "void main() \n" + "{ \n" + " mediump float Y = texture2D(yTexture, yTexCoord).r; \n" + " mediump vec2 UV = texture2D(uvTexture, yTexCoord).ra; \n" + " mediump vec4 color = vec4(Y, UV.x, UV.y, 1.); \n" + " gl_FragColor = colorMatrix * color * opacity; \n" + "}"; + + static const char *shaderNV21 = + "uniform sampler2D yTexture; \n" + "uniform sampler2D uvTexture; \n" + "uniform mediump mat4 colorMatrix; \n" + "uniform lowp float opacity; \n" + "varying highp vec2 yTexCoord; \n" + "void main() \n" + "{ \n" + " mediump float Y = texture2D(yTexture, yTexCoord).r; \n" + " mediump vec2 UV = texture2D(uvTexture, yTexCoord).ar; \n" + " mediump vec4 color = vec4(Y, UV.x, UV.y, 1.); \n" + " gl_FragColor = colorMatrix * color * opacity; \n" + "}"; + return m_isNV21 ? shaderNV21 : shaderNV12; + } + + virtual void initialize() { + m_id_yTexture = program()->uniformLocation("yTexture"); + m_id_uTexture = program()->uniformLocation("uvTexture"); + m_id_matrix = program()->uniformLocation("qt_Matrix"); + m_id_yWidth = program()->uniformLocation("yWidth"); + m_id_colorMatrix = program()->uniformLocation("colorMatrix"); + m_id_opacity = program()->uniformLocation("opacity"); + } + +private: + bool m_isNV21; +}; + + +class QSGVideoMaterial_YUV : public QSGMaterial +{ +public: + QSGVideoMaterial_YUV(const QVideoSurfaceFormat &format); + ~QSGVideoMaterial_YUV(); + + bool isNV12_21() const { + const QVideoFrame::PixelFormat pf = m_format.pixelFormat(); + return pf == QVideoFrame::Format_NV12 || pf == QVideoFrame::Format_NV21; + } + + virtual QSGMaterialType *type() const { + static QSGMaterialType theType; + return &theType; + } + + virtual QSGMaterialShader *createShader() const { + const QVideoFrame::PixelFormat pf = m_format.pixelFormat(); + if (isNV12_21()) + return new QSGVideoMaterialShader_NV_12_21(pf == QVideoFrame::Format_NV21); + + return new QSGVideoMaterialShader_YUV420; + } + + virtual int compare(const QSGMaterial *other) const { + const QSGVideoMaterial_YUV *m = static_cast<const QSGVideoMaterial_YUV *>(other); + int d = m_textureIds[0] - m->m_textureIds[0]; + if (d) + return d; + + d = m_textureIds[1] - m->m_textureIds[1]; + + if (m_textureIds.size() == 2 || d != 0) + return d; + + return m_textureIds[2] - m->m_textureIds[2]; + } + + void updateBlending() { + setFlag(Blending, qFuzzyCompare(m_opacity, qreal(1.0)) ? false : true); + } + + void setCurrentFrame(const QVideoFrame &frame) { + QMutexLocker lock(&m_frameMutex); + m_frame = frame; + } + + void bind(); + void bindTexture(int id, int w, int h, const uchar *bits, GLenum format); + + QVideoSurfaceFormat m_format; + QSize m_textureSize; + + QVector<GLuint> m_textureIds; + + qreal m_opacity; + GLfloat m_yWidth; + GLfloat m_uvWidth; + QMatrix4x4 m_colorMatrix; + + QVideoFrame m_frame; + QMutex m_frameMutex; +}; + +QSGVideoMaterial_YUV::QSGVideoMaterial_YUV(const QVideoSurfaceFormat &format) : + m_format(format), + m_opacity(1.0), + m_yWidth(1.0), + m_uvWidth(1.0) +{ + m_textureIds.resize(isNV12_21() ? 2 : 3); + + switch (format.yCbCrColorSpace()) { + case QVideoSurfaceFormat::YCbCr_JPEG: + m_colorMatrix = QMatrix4x4( + 1.0f, 0.000f, 1.402f, -0.701f, + 1.0f, -0.344f, -0.714f, 0.529f, + 1.0f, 1.772f, 0.000f, -0.886f, + 0.0f, 0.000f, 0.000f, 1.0000f); + break; + case QVideoSurfaceFormat::YCbCr_BT709: + case QVideoSurfaceFormat::YCbCr_xvYCC709: + m_colorMatrix = QMatrix4x4( + 1.164f, 0.000f, 1.793f, -0.5727f, + 1.164f, -0.534f, -0.213f, 0.3007f, + 1.164f, 2.115f, 0.000f, -1.1302f, + 0.0f, 0.000f, 0.000f, 1.0000f); + break; + default: //BT 601: + m_colorMatrix = QMatrix4x4( + 1.164f, 0.000f, 1.596f, -0.8708f, + 1.164f, -0.392f, -0.813f, 0.5296f, + 1.164f, 2.017f, 0.000f, -1.081f, + 0.0f, 0.000f, 0.000f, 1.0000f); + } + + setFlag(Blending, false); +} + +QSGVideoMaterial_YUV::~QSGVideoMaterial_YUV() +{ + if (!m_textureSize.isEmpty()) { + if (QOpenGLContext *current = QOpenGLContext::currentContext()) + current->functions()->glDeleteTextures(m_textureIds.size(), &m_textureIds[0]); + else + qWarning() << "QSGVideoMaterial_YUV: Cannot obtain GL context, unable to delete textures"; + } +} + +void QSGVideoMaterial_YUV::bind() +{ + QOpenGLFunctions *functions = QOpenGLContext::currentContext()->functions(); + QMutexLocker lock(&m_frameMutex); + if (m_frame.isValid()) { + if (m_frame.map(QAbstractVideoBuffer::ReadOnly)) { + int fw = m_frame.width(); + int fh = m_frame.height(); + + // Frame has changed size, recreate textures... + if (m_textureSize != m_frame.size()) { + if (!m_textureSize.isEmpty()) + functions->glDeleteTextures(m_textureIds.size(), &m_textureIds[0]); + functions->glGenTextures(m_textureIds.size(), &m_textureIds[0]); + m_textureSize = m_frame.size(); + } + + GLint previousAlignment; + functions->glGetIntegerv(GL_UNPACK_ALIGNMENT, &previousAlignment); + functions->glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + + if (isNV12_21()) { + const int y = 0; + const int uv = 1; + + m_yWidth = qreal(fw) / m_frame.bytesPerLine(y); + m_uvWidth = m_yWidth; + + functions->glActiveTexture(GL_TEXTURE1); + bindTexture(m_textureIds[1], m_frame.bytesPerLine(uv) / 2, fh / 2, m_frame.bits(uv), GL_LUMINANCE_ALPHA); + functions->glActiveTexture(GL_TEXTURE0); // Finish with 0 as default texture unit + bindTexture(m_textureIds[0], m_frame.bytesPerLine(y), fh, m_frame.bits(y), GL_LUMINANCE); + } else { + const int y = 0; + const int u = m_frame.pixelFormat() == QVideoFrame::Format_YUV420P ? 1 : 2; + const int v = m_frame.pixelFormat() == QVideoFrame::Format_YUV420P ? 2 : 1; + + m_yWidth = qreal(fw) / m_frame.bytesPerLine(y); + m_uvWidth = qreal(fw) / (2 * m_frame.bytesPerLine(u)); + + functions->glActiveTexture(GL_TEXTURE1); + bindTexture(m_textureIds[1], m_frame.bytesPerLine(u), fh / 2, m_frame.bits(u), GL_LUMINANCE); + functions->glActiveTexture(GL_TEXTURE2); + bindTexture(m_textureIds[2], m_frame.bytesPerLine(v), fh / 2, m_frame.bits(v), GL_LUMINANCE); + functions->glActiveTexture(GL_TEXTURE0); // Finish with 0 as default texture unit + bindTexture(m_textureIds[0], m_frame.bytesPerLine(y), fh, m_frame.bits(y), GL_LUMINANCE); + } + + functions->glPixelStorei(GL_UNPACK_ALIGNMENT, previousAlignment); + m_frame.unmap(); + } + + m_frame = QVideoFrame(); + } else { + functions->glActiveTexture(GL_TEXTURE1); + functions->glBindTexture(GL_TEXTURE_2D, m_textureIds[1]); + if (!isNV12_21()) { + functions->glActiveTexture(GL_TEXTURE2); + functions->glBindTexture(GL_TEXTURE_2D, m_textureIds[2]); + } + functions->glActiveTexture(GL_TEXTURE0); // Finish with 0 as default texture unit + functions->glBindTexture(GL_TEXTURE_2D, m_textureIds[0]); + } +} + +void QSGVideoMaterial_YUV::bindTexture(int id, int w, int h, const uchar *bits, GLenum format) +{ + QOpenGLFunctions *functions = QOpenGLContext::currentContext()->functions(); + + functions->glBindTexture(GL_TEXTURE_2D, id); + functions->glTexImage2D(GL_TEXTURE_2D, 0, format, w, h, 0, format, GL_UNSIGNED_BYTE, bits); + functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); +} + +QSGVideoNode_YUV::QSGVideoNode_YUV(const QVideoSurfaceFormat &format) : + m_format(format) +{ + setFlag(QSGNode::OwnsMaterial); + m_material = new QSGVideoMaterial_YUV(format); + setMaterial(m_material); +} + +QSGVideoNode_YUV::~QSGVideoNode_YUV() +{ +} + +void QSGVideoNode_YUV::setCurrentFrame(const QVideoFrame &frame, FrameFlags) +{ + m_material->setCurrentFrame(frame); + markDirty(DirtyMaterial); +} + +void QSGVideoMaterialShader_YUV420::updateState(const RenderState &state, + QSGMaterial *newMaterial, + QSGMaterial *oldMaterial) +{ + Q_UNUSED(oldMaterial); + + QSGVideoMaterial_YUV *mat = static_cast<QSGVideoMaterial_YUV *>(newMaterial); + program()->setUniformValue(m_id_yTexture, 0); + program()->setUniformValue(m_id_uTexture, 1); + program()->setUniformValue(m_id_vTexture, 2); + + mat->bind(); + + program()->setUniformValue(m_id_colorMatrix, mat->m_colorMatrix); + program()->setUniformValue(m_id_yWidth, mat->m_yWidth); + program()->setUniformValue(m_id_uvWidth, mat->m_uvWidth); + if (state.isOpacityDirty()) { + mat->m_opacity = state.opacity(); + program()->setUniformValue(m_id_opacity, GLfloat(mat->m_opacity)); + } + if (state.isMatrixDirty()) + program()->setUniformValue(m_id_matrix, state.combinedMatrix()); +} + +void QSGVideoMaterialShader_NV_12_21::updateState(const RenderState &state, + QSGMaterial *newMaterial, + QSGMaterial *oldMaterial) +{ + Q_UNUSED(oldMaterial); + + QSGVideoMaterial_YUV *mat = static_cast<QSGVideoMaterial_YUV *>(newMaterial); + program()->setUniformValue(m_id_yTexture, 0); + program()->setUniformValue(m_id_uTexture, 1); + + mat->bind(); + + program()->setUniformValue(m_id_colorMatrix, mat->m_colorMatrix); + program()->setUniformValue(m_id_yWidth, mat->m_yWidth); + if (state.isOpacityDirty()) { + mat->m_opacity = state.opacity(); + program()->setUniformValue(m_id_opacity, GLfloat(mat->m_opacity)); + } + if (state.isMatrixDirty()) + program()->setUniformValue(m_id_matrix, state.combinedMatrix()); +} + +QT_END_NAMESPACE |