--- a/qtmobility/plugins/multimedia/gstreamer/mediacapture/qgstreamercameracontrol.cpp Fri Apr 16 15:51:22 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,322 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the Qt Mobility Components.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** 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, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qgstreamercameracontrol.h"
-
-#include <QtCore/qdebug.h>
-#include <QtCore/qfile.h>
-
-#include <linux/types.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <sys/poll.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/mman.h>
-#include <linux/videodev2.h>
-
-QT_BEGIN_NAMESPACE
-static inline uint qHash(const QSize& key) { return uint(key.width()*256+key.height()); }
-
-static bool operator<(const QSize &s1, const QSize s2)
-{
- return s1.width()*s1.height() < s2.width()*s2.height();
-}
-QT_END_NAMESPACE
-
-QGstreamerCameraControl::QGstreamerCameraControl(QGstreamerCaptureSession *session)
- :QCameraControl(session), m_captureMode(QCamera::CaptureStillImage), m_session(session), m_state(QCamera::StoppedState)
-{
- connect(m_session, SIGNAL(stateChanged(QGstreamerCaptureSession::State)),
- this, SLOT(updateState()));
-}
-
-QGstreamerCameraControl::~QGstreamerCameraControl()
-{
-}
-
-GstElement *QGstreamerCameraControl::buildElement()
-{
- GstElement *camera = gst_element_factory_make("v4l2src", "camera_source");
-
- if (camera && !m_device.isEmpty() )
- g_object_set(G_OBJECT(camera), "device", m_device.constData(), NULL);
-
- return camera;
-}
-
-void QGstreamerCameraControl::start()
-{
- if (m_session->state() == QGstreamerCaptureSession::StoppedState)
- m_session->setState(QGstreamerCaptureSession::PreviewState);
-}
-
-void QGstreamerCameraControl::stop()
-{
- m_session->setState(QGstreamerCaptureSession::StoppedState);
-}
-
-void QGstreamerCameraControl::setDevice(const QString &device)
-{
- QByteArray newDevice = device.toLocal8Bit();
-
- if (m_device != newDevice) {
- m_device = newDevice;
- updateSupportedResolutions(device);
- }
-}
-
-QCamera::State QGstreamerCameraControl::state() const
-{
- if (m_session->state() == QGstreamerCaptureSession::StoppedState)
- return QCamera::StoppedState;
- else
- return QCamera::ActiveState;
-}
-
-void QGstreamerCameraControl::updateState()
-{
- QCamera::State newState = state();
- if (m_state != newState) {
- m_state = newState;
- emit stateChanged(m_state);
- }
-}
-
-
-void QGstreamerCameraControl::updateSupportedResolutions(const QString &device)
-{
- m_frameRates.clear();
- m_resolutions.clear();
- m_ratesByResolution.clear();
-
- QSet<QSize> allResolutions;
- QSet<int> allFrameRates;
-
- QFile f(device);
-
- if (!f.open(QFile::ReadOnly))
- return;
-
- int fd = f.handle();
-
- //get the list of formats:
- QList<quint32> supportedFormats;
-
- {
- v4l2_fmtdesc fmt;
- memset(&fmt, 0, sizeof(v4l2_fmtdesc));
-
- fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- int sanity = 0;
-
- for (fmt.index = 0;; fmt.index++) {
- if (sanity++ > 8)
- break;
- if( ::ioctl(fd, VIDIOC_ENUM_FMT, &fmt) == -1) {
- if(errno == EINVAL)
- break;
- }
- supportedFormats.append(fmt.pixelformat);
- }
- }
-
- QList<QSize> commonSizes;
- commonSizes << QSize(128, 96)
- <<QSize(160,120)
- <<QSize(176, 144)
- <<QSize(320, 240)
- <<QSize(352, 288)
- <<QSize(640, 480)
- <<QSize(1024, 768)
- <<QSize(1280, 1024)
- <<QSize(1600, 1200)
- <<QSize(1920, 1200)
- <<QSize(2048, 1536)
- <<QSize(2560, 1600)
- <<QSize(2580, 1936);
-
- QList<int> commonRates;
- commonRates << 05*1000 << 75*1000 << 10*1000 << 15*1000 << 20*1000
- << 24*1000 << 25*1000 << 30*1000 << 50*1000 << 60*1000;
-
-
- //get the list of resolutions:
-
- foreach (quint32 format, supportedFormats) {
- struct v4l2_frmsizeenum formatSize;
- memset(&formatSize, 0, sizeof(formatSize));
- formatSize.pixel_format = format;
-
- QList<QSize> sizeList;
-
- if (0) {
- char formatStr[5];
- memcpy(formatStr, &format, 4);
- formatStr[4] = 0;
- //qDebug() << "trying format" << formatStr;
- }
-
- for (int i=0;;i++) {
- formatSize.index = i;
- if (ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &formatSize) < 0)
- break;
-
- if (formatSize.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
- sizeList.append(QSize(formatSize.discrete.width, formatSize.discrete.height));
- } else {
-
- foreach (const QSize& candidate, commonSizes) {
- if (candidate.width() <= (int)formatSize.stepwise.max_width &&
- candidate.height() >= (int)formatSize.stepwise.min_width &&
- candidate.width() % formatSize.stepwise.step_width == 0 &&
- candidate.height() <= (int)formatSize.stepwise.max_height &&
- candidate.height() >= (int)formatSize.stepwise.min_height &&
- candidate.height() % formatSize.stepwise.step_height == 0) {
- sizeList.append(candidate);
- }
- }
-
- if (!sizeList.contains(QSize(formatSize.stepwise.min_width, formatSize.stepwise.min_height)))
- sizeList.prepend(QSize(formatSize.stepwise.min_width, formatSize.stepwise.min_height));
-
- if (!sizeList.contains(QSize(formatSize.stepwise.max_width, formatSize.stepwise.max_height)))
- sizeList.append(QSize(formatSize.stepwise.max_width, formatSize.stepwise.max_height));
-
- break; //stepwise values are returned only for index 0
- }
-
- }
-
- //and frameRates for each resolution.
-
- foreach (const QSize &s, sizeList) {
- allResolutions.insert(s);
-
- struct v4l2_frmivalenum formatInterval;
- memset(&formatInterval, 0, sizeof(formatInterval));
- formatInterval.pixel_format = format;
- formatInterval.width = s.width();
- formatInterval.height = s.height();
-
- QList<int> frameRates; //in 1/1000 of fps
-
- for (int i=0; ; i++) {
- formatInterval.index = i;
-
- if (ioctl(fd, VIDIOC_ENUM_FRAMEINTERVALS, &formatInterval) < 0)
- break;
-
- if (formatInterval.type == V4L2_FRMIVAL_TYPE_DISCRETE) {
- //converts seconds to fps*1000
- if (formatInterval.discrete.numerator)
- frameRates.append(qRound(formatInterval.discrete.denominator*1000.0 / formatInterval.discrete.numerator));
- } else {
- if (formatInterval.stepwise.min.numerator == 0 ||
- formatInterval.stepwise.max.numerator == 0) {
- qWarning() << "received invalid frame interval";
- break;
- }
-
-
- int minRate = qRound(formatInterval.stepwise.min.denominator*1000.0 /
- formatInterval.stepwise.min.numerator);
-
- int maxRate = qRound(formatInterval.stepwise.max.denominator*1000.0 /
- formatInterval.stepwise.max.numerator);
-
-
- foreach (int candidate, commonRates) {
- if (candidate >= minRate && candidate <= maxRate)
- frameRates.append(candidate);
- }
-
- if (!frameRates.contains(minRate))
- frameRates.prepend(minRate);
-
- if (!frameRates.contains(maxRate))
- frameRates.append(maxRate);
-
- break; //stepwise values are returned only for index 0
- }
- }
- allFrameRates.unite(frameRates.toSet());
- m_ratesByResolution[s].unite(frameRates.toSet());
- }
- }
-
- f.close();
-
- foreach(int rate, allFrameRates) {
- m_frameRates.append(rate/1000.0);
- }
-
- qSort(m_frameRates);
-
- m_resolutions = allResolutions.toList();
- qSort(m_resolutions);
-
- //qDebug() << "frame rates:" << m_frameRates;
- //qDebug() << "resolutions:" << m_resolutions;
-}
-
-
-QList<qreal> QGstreamerCameraControl::supportedFrameRates(const QSize &frameSize) const
-{
- if (frameSize.isEmpty())
- return m_frameRates;
- else {
- QList<qreal> res;
- foreach(int rate, m_ratesByResolution[frameSize]) {
- res.append(rate/1000.0);
- }
- return res;
- }
-}
-
-QList<QSize> QGstreamerCameraControl::supportedResolutions(qreal frameRate) const
-{
- Q_UNUSED(frameRate);
- return m_resolutions;
-}