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/*
* Copyright (C) 2007, 2008, 2009, 2010 Apple, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "QTMovieVisualContext.h"
#include "QTMovieTask.h"
#include <CVBase.h>
#include <CVHostTime.h>
#include <ImageCompression.h>
#include <Movies.h>
#include <windows.h>
struct QTCVTimeStamp {
CVTimeStamp t;
};
class QTMovieVisualContextPriv {
public:
QTMovieVisualContextPriv(QTMovieVisualContext* parent, QTMovieVisualContextClient* client, QTPixelBuffer::Type contextType);
~QTMovieVisualContextPriv();
bool isImageAvailableForTime(const QTCVTimeStamp*) const;
QTPixelBuffer imageForTime(const QTCVTimeStamp*);
void task();
QTVisualContextRef visualContextRef();
void setMovie(PassRefPtr<QTMovie>);
QTMovie* movie() const;
static void imageAvailableCallback(QTVisualContextRef visualContext, const CVTimeStamp *timeStamp, void *refCon);
private:
QTMovieVisualContext* m_parent;
QTMovieVisualContextClient* m_client;
QTVisualContextRef m_visualContext;
RefPtr<QTMovie> m_movie;
};
static CFDictionaryRef createPixelBufferOptionsDictionary(QTPixelBuffer::Type contextType)
{
const void* key = kQTVisualContextPixelBufferAttributesKey;
const void* value = QTPixelBuffer::createPixelBufferAttributesDictionary(contextType);
CFDictionaryRef pixelBufferOptions = CFDictionaryCreate(kCFAllocatorDefault, &key, &value, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFRelease(value);
return pixelBufferOptions;
}
static CFDictionaryRef pixelBufferCreationOptions(QTPixelBuffer::Type contextType)
{
if (contextType == QTPixelBuffer::ConfigureForCAImageQueue) {
static CFDictionaryRef imageQueueOptions = createPixelBufferOptionsDictionary(contextType);
return imageQueueOptions;
}
ASSERT(contextType == QTPixelBuffer::ConfigureForCGImage);
static CFDictionaryRef cgImageOptions = createPixelBufferOptionsDictionary(contextType);
return cgImageOptions;
}
QTMovieVisualContextPriv::QTMovieVisualContextPriv(QTMovieVisualContext* parent, QTMovieVisualContextClient* client, QTPixelBuffer::Type contextType)
: m_parent(parent)
, m_client(client)
, m_visualContext(0)
{
typedef OSStatus ( __cdecl *pfnQTPixelBufferContextCreate)(CFAllocatorRef, CFDictionaryRef, QTVisualContextRef*);
static pfnQTPixelBufferContextCreate pPixelBufferContextCreate = 0;
if (!pPixelBufferContextCreate) {
HMODULE qtmlDLL = ::LoadLibraryW(L"QTMLClient.dll");
if (!qtmlDLL)
return;
pPixelBufferContextCreate = reinterpret_cast<pfnQTPixelBufferContextCreate>(GetProcAddress(qtmlDLL, "QTPixelBufferContextCreate"));
if (!pPixelBufferContextCreate)
return;
}
OSStatus status = pPixelBufferContextCreate(kCFAllocatorDefault, pixelBufferCreationOptions(contextType), &m_visualContext);
if (status == noErr && m_visualContext)
QTVisualContextSetImageAvailableCallback(m_visualContext, &QTMovieVisualContextPriv::imageAvailableCallback, static_cast<void*>(this));
}
QTMovieVisualContextPriv::~QTMovieVisualContextPriv()
{
if (m_visualContext)
QTVisualContextSetImageAvailableCallback(m_visualContext, 0, 0);
}
bool QTMovieVisualContextPriv::isImageAvailableForTime(const QTCVTimeStamp* timeStamp) const
{
if (!m_visualContext)
return false;
return QTVisualContextIsNewImageAvailable(m_visualContext, reinterpret_cast<const CVTimeStamp*>(timeStamp));
}
QTPixelBuffer QTMovieVisualContextPriv::imageForTime(const QTCVTimeStamp* timeStamp)
{
QTPixelBuffer pixelBuffer;
if (m_visualContext) {
CVImageBufferRef newImage = 0;
OSStatus status = QTVisualContextCopyImageForTime(m_visualContext, kCFAllocatorDefault, reinterpret_cast<const CVTimeStamp*>(timeStamp), &newImage);
if (status == noErr)
pixelBuffer.adopt(newImage);
}
return pixelBuffer;
}
void QTMovieVisualContextPriv::task()
{
if (m_visualContext)
QTVisualContextTask(m_visualContext);
}
QTVisualContextRef QTMovieVisualContextPriv::visualContextRef()
{
return m_visualContext;
}
void QTMovieVisualContextPriv::setMovie(PassRefPtr<QTMovie> movie)
{
if (movie == m_movie)
return;
if (m_movie) {
SetMovieVisualContext(m_movie->getMovieHandle(), 0);
m_movie = 0;
}
if (movie)
OSStatus status = SetMovieVisualContext(movie->getMovieHandle(), m_visualContext);
m_movie = movie;
}
QTMovie* QTMovieVisualContextPriv::movie() const
{
return m_movie.get();
}
void QTMovieVisualContextPriv::imageAvailableCallback(QTVisualContextRef visualContext, const CVTimeStamp *timeStamp, void *refCon)
{
if (!refCon)
return;
QTMovieVisualContextPriv* vc = static_cast<QTMovieVisualContextPriv*>(refCon);
if (!vc->m_client)
return;
vc->m_client->imageAvailableForTime(reinterpret_cast<const QTCVTimeStamp*>(timeStamp));
}
PassRefPtr<QTMovieVisualContext> QTMovieVisualContext::create(QTMovieVisualContextClient* client, QTPixelBuffer::Type contextType)
{
return adoptRef(new QTMovieVisualContext(client, contextType));
}
QTMovieVisualContext::QTMovieVisualContext(QTMovieVisualContextClient* client, QTPixelBuffer::Type contextType)
: m_private(new QTMovieVisualContextPriv(this, client, contextType))
{
}
QTMovieVisualContext::~QTMovieVisualContext()
{
}
bool QTMovieVisualContext::isImageAvailableForTime(const QTCVTimeStamp* timeStamp) const
{
return m_private->isImageAvailableForTime(timeStamp);
}
QTPixelBuffer QTMovieVisualContext::imageForTime(const QTCVTimeStamp* timeStamp)
{
return m_private->imageForTime(timeStamp);
}
void QTMovieVisualContext::task()
{
m_private->task();
}
QTVisualContextRef QTMovieVisualContext::visualContextRef()
{
return m_private->visualContextRef();
}
void QTMovieVisualContext::setMovie(PassRefPtr<QTMovie> movie)
{
m_private->setMovie(movie);
}
QTMovie* QTMovieVisualContext::movie() const
{
return m_private->movie();
}
double QTMovieVisualContext::currentHostTime()
{
return CVGetCurrentHostTime() / CVGetHostClockFrequency();
}
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