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Diffstat (limited to 'src/plugins/directshow/common/directshowmediatype.cpp')
| -rw-r--r-- | src/plugins/directshow/common/directshowmediatype.cpp | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/src/plugins/directshow/common/directshowmediatype.cpp b/src/plugins/directshow/common/directshowmediatype.cpp new file mode 100644 index 000000000..65882806c --- /dev/null +++ b/src/plugins/directshow/common/directshowmediatype.cpp @@ -0,0 +1,350 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** 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 The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://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 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "directshowmediatype.h" +#include "directshowglobal.h" + +namespace +{ + struct TypeLookup + { + QVideoFrame::PixelFormat pixelFormat; + GUID mediaType; + }; + + static const TypeLookup qt_typeLookup[] = + { + { QVideoFrame::Format_ARGB32, MEDIASUBTYPE_ARGB32 }, + { QVideoFrame::Format_RGB32, MEDIASUBTYPE_RGB32 }, + { QVideoFrame::Format_RGB24, MEDIASUBTYPE_RGB24 }, + { QVideoFrame::Format_RGB565, MEDIASUBTYPE_RGB565 }, + { QVideoFrame::Format_RGB555, MEDIASUBTYPE_RGB555 }, + { QVideoFrame::Format_AYUV444, MEDIASUBTYPE_AYUV }, + { QVideoFrame::Format_YUYV, MEDIASUBTYPE_YUY2 }, + { QVideoFrame::Format_UYVY, MEDIASUBTYPE_UYVY }, + { QVideoFrame::Format_IMC1, MEDIASUBTYPE_IMC1 }, + { QVideoFrame::Format_IMC2, MEDIASUBTYPE_IMC2 }, + { QVideoFrame::Format_IMC3, MEDIASUBTYPE_IMC3 }, + { QVideoFrame::Format_IMC4, MEDIASUBTYPE_IMC4 }, + { QVideoFrame::Format_YV12, MEDIASUBTYPE_YV12 }, + { QVideoFrame::Format_NV12, MEDIASUBTYPE_NV12 }, + { QVideoFrame::Format_YUV420P, MEDIASUBTYPE_IYUV }, + { QVideoFrame::Format_YUV420P, MEDIASUBTYPE_I420 }, + { QVideoFrame::Format_Jpeg, MEDIASUBTYPE_MJPG } + }; +} + +bool DirectShowMediaType::isPartiallySpecified(const AM_MEDIA_TYPE *mediaType) +{ + return mediaType->majortype == GUID_NULL || mediaType->formattype == GUID_NULL; +} + +DirectShowMediaType::DirectShowMediaType() + : mediaType({ GUID_NULL, GUID_NULL, TRUE, FALSE, 1, GUID_NULL, nullptr, 0, nullptr}) +{ +} + +DirectShowMediaType::DirectShowMediaType(const AM_MEDIA_TYPE &type) + : DirectShowMediaType() +{ + copy(&mediaType, &type); +} + +DirectShowMediaType::DirectShowMediaType(AM_MEDIA_TYPE &&type) + : DirectShowMediaType() +{ + move(&mediaType, type); +} + +DirectShowMediaType::DirectShowMediaType(const DirectShowMediaType &other) + : DirectShowMediaType() +{ + copy(&mediaType, &other.mediaType); +} + +DirectShowMediaType::DirectShowMediaType(DirectShowMediaType &&other) + : DirectShowMediaType() +{ + move(&mediaType, other.mediaType); +} + +DirectShowMediaType &DirectShowMediaType::operator=(const DirectShowMediaType &other) +{ + copy(&mediaType, &other.mediaType); + return *this; +} + +DirectShowMediaType &DirectShowMediaType::operator=(DirectShowMediaType &&other) +{ + move(&mediaType, other.mediaType); + return *this; +} + +void DirectShowMediaType::init(AM_MEDIA_TYPE *type) +{ + Q_ASSERT(type); + SecureZeroMemory(reinterpret_cast<void *>(type), sizeof(AM_MEDIA_TYPE)); + type->lSampleSize = 1; + type->bFixedSizeSamples = TRUE; +} + +void DirectShowMediaType::copy(AM_MEDIA_TYPE *target, const AM_MEDIA_TYPE *source) +{ + if (!(target && source)) + return; + + if (target == source) + return; + + clear(*target); + + copyToUninitialized(target, source); +} + +void DirectShowMediaType::copyToUninitialized(AM_MEDIA_TYPE *target, const AM_MEDIA_TYPE *source) +{ + *target = *source; + + if (source->cbFormat > 0) { + target->pbFormat = reinterpret_cast<PBYTE>(CoTaskMemAlloc(source->cbFormat)); + memcpy(target->pbFormat, source->pbFormat, source->cbFormat); + } + if (target->pUnk) + target->pUnk->AddRef(); +} + +void DirectShowMediaType::move(AM_MEDIA_TYPE *target, AM_MEDIA_TYPE **source) +{ + if (!target || !source || !(*source)) + return; + + if (target == *source) + return; + + clear(*target); + *target = *(*source); + SecureZeroMemory(reinterpret_cast<void *>(*source), sizeof(AM_MEDIA_TYPE)); + *source = nullptr; +} + +void DirectShowMediaType::move(AM_MEDIA_TYPE *target, AM_MEDIA_TYPE &source) +{ + AM_MEDIA_TYPE *srcPtr = &source; + move(target, &srcPtr); +} + +/** + * @brief DirectShowMediaType::deleteType - Used for AM_MEDIA_TYPE structures that have + * been allocated by CoTaskMemAlloc or CreateMediaType. + * @param type + */ +void DirectShowMediaType::deleteType(AM_MEDIA_TYPE *type) +{ + if (!type) + return; + + clear(*type); + CoTaskMemFree(type); +} + +bool DirectShowMediaType::isCompatible(const AM_MEDIA_TYPE *a, const AM_MEDIA_TYPE *b) +{ + if (b->majortype != GUID_NULL && a->majortype != b->majortype) + return false; + + if (b->subtype != GUID_NULL && a->subtype != b->subtype) + return false; + + if (b->formattype != GUID_NULL) { + if (a->formattype != b->formattype) + return false; + if (a->cbFormat != b->cbFormat) + return false; + if (a->cbFormat != 0 && memcmp(a->pbFormat, b->pbFormat, a->cbFormat) != 0) + return false; + } + + return true; +} + +/** + * @brief DirectShowMediaType::clear - Clears all member data, and releases allocated buffers. + * Use this to release automatic AM_MEDIA_TYPE structures. + * @param type + */ +void DirectShowMediaType::clear(AM_MEDIA_TYPE &type) +{ + if (type.cbFormat > 0) + CoTaskMemFree(type.pbFormat); + + if (type.pUnk) + type.pUnk->Release(); + + SecureZeroMemory(&type, sizeof(type)); +} + + +GUID DirectShowMediaType::convertPixelFormat(QVideoFrame::PixelFormat format) +{ + const int count = sizeof(qt_typeLookup) / sizeof(TypeLookup); + + for (int i = 0; i < count; ++i) + if (qt_typeLookup[i].pixelFormat == format) + return qt_typeLookup[i].mediaType; + + return MEDIASUBTYPE_None; +} + +QVideoSurfaceFormat DirectShowMediaType::videoFormatFromType(const AM_MEDIA_TYPE *type) +{ + if (!type) + return QVideoSurfaceFormat(); + + const int count = sizeof(qt_typeLookup) / sizeof(TypeLookup); + + for (int i = 0; i < count; ++i) { + if (IsEqualGUID(qt_typeLookup[i].mediaType, type->subtype) && type->cbFormat > 0) { + if (IsEqualGUID(type->formattype, FORMAT_VideoInfo)) { + VIDEOINFOHEADER *header = reinterpret_cast<VIDEOINFOHEADER *>(type->pbFormat); + + QVideoSurfaceFormat format( + QSize(header->bmiHeader.biWidth, qAbs(header->bmiHeader.biHeight)), + qt_typeLookup[i].pixelFormat); + + if (header->AvgTimePerFrame > 0) + format.setFrameRate(10000 /header->AvgTimePerFrame); + + format.setScanLineDirection(scanLineDirection(format.pixelFormat(), header->bmiHeader)); + + return format; + } else if (IsEqualGUID(type->formattype, FORMAT_VideoInfo2)) { + VIDEOINFOHEADER2 *header = reinterpret_cast<VIDEOINFOHEADER2 *>(type->pbFormat); + + QVideoSurfaceFormat format( + QSize(header->bmiHeader.biWidth, qAbs(header->bmiHeader.biHeight)), + qt_typeLookup[i].pixelFormat); + + if (header->AvgTimePerFrame > 0) + format.setFrameRate(10000 / header->AvgTimePerFrame); + + format.setScanLineDirection(scanLineDirection(format.pixelFormat(), header->bmiHeader)); + + return format; + } + } + } + return QVideoSurfaceFormat(); +} + +QVideoFrame::PixelFormat DirectShowMediaType::pixelFormatFromType(const AM_MEDIA_TYPE *type) +{ + if (!type) + return QVideoFrame::Format_Invalid; + + const int count = sizeof(qt_typeLookup) / sizeof(TypeLookup); + + for (int i = 0; i < count; ++i) { + if (IsEqualGUID(qt_typeLookup[i].mediaType, type->subtype)) { + return qt_typeLookup[i].pixelFormat; + } + } + + return QVideoFrame::Format_Invalid; +} + +#define PAD_TO_DWORD(x) (((x) + 3) & ~3) +int DirectShowMediaType::bytesPerLine(const QVideoSurfaceFormat &format) +{ + switch (format.pixelFormat()) { + // 32 bpp packed formats. + case QVideoFrame::Format_ARGB32: + case QVideoFrame::Format_RGB32: + case QVideoFrame::Format_AYUV444: + return format.frameWidth() * 4; + // 24 bpp packed formats. + case QVideoFrame::Format_RGB24: + return PAD_TO_DWORD(format.frameWidth() * 3); + // 16 bpp packed formats. + case QVideoFrame::Format_RGB565: + case QVideoFrame::Format_RGB555: + case QVideoFrame::Format_YUYV: + case QVideoFrame::Format_UYVY: + return PAD_TO_DWORD(format.frameWidth() * 2); + // Planar formats. + case QVideoFrame::Format_YV12: + case QVideoFrame::Format_YUV420P: + case QVideoFrame::Format_IMC1: + case QVideoFrame::Format_IMC2: + case QVideoFrame::Format_IMC3: + case QVideoFrame::Format_IMC4: + case QVideoFrame::Format_NV12: + return format.frameWidth(); + default: + return 0; + } +} + +QVideoSurfaceFormat::Direction DirectShowMediaType::scanLineDirection(QVideoFrame::PixelFormat pixelFormat, const BITMAPINFOHEADER &bmiHeader) +{ + /* MSDN http://msdn.microsoft.com/en-us/library/windows/desktop/dd318229(v=vs.85).aspx */ + /* For uncompressed RGB bitmaps: + * if biHeight is positive, the bitmap is a bottom-up DIB with the origin at the lower left corner. + * If biHeight is negative, the bitmap is a top-down DIB with the origin at the upper left corner. + * + * For YUV bitmaps: + * the bitmap is always top-down, regardless of the sign of biHeight. + * Decoders should offer YUV formats with postive biHeight, but for backward compatibility they should accept YUV formats with either positive or negative biHeight. + * + * For compressed formats: + * biHeight must be positive, regardless of image orientation. + */ + switch (pixelFormat) + { + case QVideoFrame::Format_ARGB32: + case QVideoFrame::Format_RGB32: + case QVideoFrame::Format_RGB24: + case QVideoFrame::Format_RGB565: + case QVideoFrame::Format_RGB555: + return bmiHeader.biHeight < 0 + ? QVideoSurfaceFormat::TopToBottom + : QVideoSurfaceFormat::BottomToTop; + default: + return QVideoSurfaceFormat::TopToBottom; + } +} |