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/****************************************************************************
**
** 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 "directshowmediatype.h"
namespace
{
struct TypeLookup
{
QVideoFrame::PixelFormat pixelFormat;
GUID mediaType;
};
static const TypeLookup qt_typeLookup[] =
{
{ QVideoFrame::Format_RGB32, /*MEDIASUBTYPE_RGB32*/ {0xe436eb7e, 0x524f, 0x11ce, {0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}} },
{ QVideoFrame::Format_BGR24, /*MEDIASUBTYPE_RGB24*/ {0xe436eb7d, 0x524f, 0x11ce, {0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}} },
{ QVideoFrame::Format_RGB565, /*MEDIASUBTYPE_RGB565*/ {0xe436eb7b, 0x524f, 0x11ce, {0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}} },
{ QVideoFrame::Format_RGB555, /*MEDIASUBTYPE_RGB555*/ {0xe436eb7c, 0x524f, 0x11ce, {0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}} },
{ QVideoFrame::Format_AYUV444, /*MEDIASUBTYPE_AYUV*/ {0x56555941, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_YUYV, /*MEDIASUBTYPE_YUY2*/ {0x32595559, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_UYVY, /*MEDIASUBTYPE_UYVY*/ {0x59565955, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_IMC1, /*MEDIASUBTYPE_IMC1*/ {0x31434D49, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_IMC2, /*MEDIASUBTYPE_IMC2*/ {0x32434D49, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_IMC3, /*MEDIASUBTYPE_IMC3*/ {0x33434D49, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_IMC4, /*MEDIASUBTYPE_IMC4*/ {0x34434D49, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_YV12, /*MEDIASUBTYPE_YV12*/ {0x32315659, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_NV12, /*MEDIASUBTYPE_NV12*/ {0x3231564E, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} },
{ QVideoFrame::Format_YUV420P, /*MEDIASUBTYPE_IYUV*/ {0x56555949, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} }
};
}
void DirectShowMediaType::copy(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::deleteType(AM_MEDIA_TYPE *type)
{
freeData(type);
CoTaskMemFree(type);
}
void DirectShowMediaType::freeData(AM_MEDIA_TYPE *type)
{
if (type->cbFormat > 0)
CoTaskMemFree(type->pbFormat);
if (type->pUnk)
type->pUnk->Release();
}
GUID DirectShowMediaType::convertPixelFormat(QVideoFrame::PixelFormat format)
{
// MEDIASUBTYPE_None;
static const GUID none = {
0xe436eb8e, 0x524f, 0x11ce, {0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70} };
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 none;
}
QVideoSurfaceFormat DirectShowMediaType::formatFromType(const AM_MEDIA_TYPE &type)
{
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();
}
#define PAD_TO_DWORD(x) (((x) + 3) & ~3)
int DirectShowMediaType::bytesPerLine(const QVideoSurfaceFormat &format)
{
switch (format.pixelFormat()) {
// 32 bpp packed formats.
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_IMC1:
case QVideoFrame::Format_IMC2:
case QVideoFrame::Format_IMC3:
case QVideoFrame::Format_IMC4:
case QVideoFrame::Format_YV12:
case QVideoFrame::Format_NV12:
case QVideoFrame::Format_YUV420P:
return PAD_TO_DWORD(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_RGB32:
case QVideoFrame::Format_BGR24:
case QVideoFrame::Format_RGB565:
case QVideoFrame::Format_RGB555:
return bmiHeader.biHeight < 0
? QVideoSurfaceFormat::TopToBottom
: QVideoSurfaceFormat::BottomToTop;
default:
return QVideoSurfaceFormat::TopToBottom;
}
}
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