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Copy pathiTunesAPI.cpp
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332 lines (251 loc) · 11 KB
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//
// File: iTunesAPI.c
//
// Abstract: part of iTunes Visual SDK
//
// Version: 2.0
//
// Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc. ( "Apple" )
// in consideration of your agreement to the following terms, and your use,
// installation, modification or redistribution of this Apple software
// constitutes acceptance of these terms. If you do not agree with these
// terms, please do not use, install, modify or redistribute this Apple
// software.
//
// In consideration of your agreement to abide by the following terms, and
// subject to these terms, Apple grants you a personal, non - exclusive
// license, under Apple's copyrights in this original Apple software ( the
// "Apple Software" ), to use, reproduce, modify and redistribute the Apple
// Software, with or without modifications, in source and / or binary forms;
// provided that if you redistribute the Apple Software in its entirety and
// without modifications, you must retain this notice and the following text
// and disclaimers in all such redistributions of the Apple Software. Neither
// the name, trademarks, service marks or logos of Apple Inc. may be used to
// endorse or promote products derived from the Apple Software without specific
// prior written permission from Apple. Except as expressly stated in this
// notice, no other rights or licenses, express or implied, are granted by
// Apple herein, including but not limited to any patent rights that may be
// infringed by your derivative works or by other works in which the Apple
// Software may be incorporated.
//
// The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
// WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
// WARRANTIES OF NON - INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION
// ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
//
// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
// CONSEQUENTIAL DAMAGES ( INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION ) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION
// AND / OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
// UNDER THEORY OF CONTRACT, TORT ( INCLUDING NEGLIGENCE ), STRICT LIABILITY OR
// OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright © 2000-2011 Apple Inc. All Rights Reserved.
//
#include "iTunesAPI.h"
#include "iTunesVisualAPI.h"
#include <string.h>
// SetNumVersion
//
void SetNumVersion(NumVersion *numVersion, UInt8 majorRev, UInt8 minorAndBugRev, UInt8 stage, UInt8 nonRelRev)
{
numVersion->majorRev = majorRev;
numVersion->minorAndBugRev = minorAndBugRev;
numVersion->stage = stage;
numVersion->nonRelRev = nonRelRev;
}
// ITCallApplicationInternal
//
static OSStatus ITCallApplicationInternal(void *appCookie, ITAppProcPtr handler, OSType message, UInt32 messageMajorVersion, UInt32 messageMinorVersion, PlayerMessageInfo *messageInfo)
{
PlayerMessageInfo localMessageInfo;
if (messageInfo == nil)
{
memset(&localMessageInfo, 0, sizeof(localMessageInfo));
messageInfo = &localMessageInfo;
}
messageInfo->messageMajorVersion = messageMajorVersion;
messageInfo->messageMinorVersion = messageMinorVersion;
messageInfo->messageInfoSize = sizeof(PlayerMessageInfo);
return handler(appCookie, message, messageInfo);
}
// ITCallApplication
//
OSStatus ITCallApplication(void *appCookie, ITAppProcPtr handler, OSType message, PlayerMessageInfo *messageInfo)
{
return ITCallApplicationInternal(appCookie, handler, message, kITPluginMajorMessageVersion, kITPluginMinorMessageVersion, messageInfo);
}
// PlayerSetFullScreen
//
OSStatus PlayerSetFullScreen(void *appCookie, ITAppProcPtr appProc, Boolean fullScreen)
{
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.setFullScreenMessage.fullScreen = fullScreen;
return ITCallApplication(appCookie, appProc, kPlayerSetFullScreenMessage, &messageInfo);
}
// PlayerRequestCurrentTrackCoverArt
//
OSStatus PlayerRequestCurrentTrackCoverArt(void *appCookie, ITAppProcPtr appProc)
{
OSStatus status;
status = ITCallApplication(appCookie, appProc, kPlayerRequestCurrentTrackCoverArtMessage, nil);
return status;
}
// PlayerGetPluginData
//
OSStatus PlayerGetPluginData(void *appCookie, ITAppProcPtr appProc, void *dataPtr, UInt32 dataBufferSize, UInt32 *dataSize)
{
OSStatus status;
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.getPluginDataMessage.dataPtr = dataPtr;
messageInfo.u.getPluginDataMessage.dataBufferSize = dataBufferSize;
status = ITCallApplication(appCookie, appProc, kPlayerGetPluginDataMessage, &messageInfo);
if (dataSize != nil)
*dataSize = messageInfo.u.getPluginDataMessage.dataSize;
return status;
}
// PlayerSetPluginData
//
OSStatus PlayerSetPluginData(void *appCookie, ITAppProcPtr appProc, void *dataPtr, UInt32 dataSize)
{
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.setPluginDataMessage.dataPtr = dataPtr;
messageInfo.u.setPluginDataMessage.dataSize = dataSize;
return ITCallApplication(appCookie, appProc, kPlayerSetPluginDataMessage, &messageInfo);
}
// PlayerGetPluginNamedData
//
OSStatus PlayerGetPluginNamedData(void *appCookie, ITAppProcPtr appProc, ConstStringPtr dataName, void *dataPtr, UInt32 dataBufferSize, UInt32 *dataSize)
{
OSStatus status;
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.getPluginNamedDataMessage.dataName = dataName;
messageInfo.u.getPluginNamedDataMessage.dataPtr = dataPtr;
messageInfo.u.getPluginNamedDataMessage.dataBufferSize = dataBufferSize;
status = ITCallApplication(appCookie, appProc, kPlayerGetPluginNamedDataMessage, &messageInfo);
if (dataSize != nil)
*dataSize = messageInfo.u.getPluginNamedDataMessage.dataSize;
return status;
}
// PlayerSetPluginNamedData
//
OSStatus PlayerSetPluginNamedData(void *appCookie, ITAppProcPtr appProc, ConstStringPtr dataName, void *dataPtr, UInt32 dataSize)
{
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.setPluginNamedDataMessage.dataName = dataName;
messageInfo.u.setPluginNamedDataMessage.dataPtr = dataPtr;
messageInfo.u.setPluginNamedDataMessage.dataSize = dataSize;
return ITCallApplication(appCookie, appProc, kPlayerSetPluginNamedDataMessage, &messageInfo);
}
// PlayerIdle
//
OSStatus PlayerIdle(void *appCookie, ITAppProcPtr appProc)
{
return ITCallApplication(appCookie, appProc, kPlayerIdleMessage, nil);
}
// PlayerShowAbout
//
void PlayerShowAbout(void *appCookie, ITAppProcPtr appProc)
{
ITCallApplication(appCookie, appProc, kPlayerShowAboutMessage, nil);
}
// PlayerOpenURL
//
void PlayerOpenURL(void *appCookie, ITAppProcPtr appProc, SInt8 *string, UInt32 length)
{
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.openURLMessage.url = string;
messageInfo.u.openURLMessage.length = length;
ITCallApplication(appCookie, appProc, kPlayerOpenURLMessage, &messageInfo);
}
// PlayerUnregisterPlugin
//
OSStatus PlayerUnregisterPlugin(void *appCookie, ITAppProcPtr appProc, PlayerMessageInfo *messageInfo)
{
return ITCallApplication(appCookie, appProc, kPlayerUnregisterPluginMessage, messageInfo);
}
// PlayerRegisterVisualPlugin
//
OSStatus PlayerRegisterVisualPlugin(void *appCookie, ITAppProcPtr appProc, PlayerMessageInfo *messageInfo)
{
return ITCallApplicationInternal(appCookie, appProc, kPlayerRegisterVisualPluginMessage, kITVisualPluginMajorMessageVersion, kITVisualPluginMinorMessageVersion, messageInfo);
}
// PlayerGetPluginITFileSpec
//
OSStatus PlayerGetPluginITFileSpec(void *appCookie, ITAppProcPtr appProc, ITFileSpec *pluginFileSpec)
{
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.getPluginITFileSpecMessage.fileSpec = pluginFileSpec;
return ITCallApplication(appCookie, appProc, kPlayerGetPluginITFileSpecMessage, &messageInfo);
}
// PlayerGetFileTrackInfo
//
OSStatus PlayerGetFileTrackInfo(void *appCookie, ITAppProcPtr appProc, const ITFileSpec *fileSpec, ITTrackInfo *trackInfo)
{
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.getFileTrackInfoMessage.fileSpec = fileSpec;
messageInfo.u.getFileTrackInfoMessage.trackInfo = trackInfo;
return ITCallApplication(appCookie, appProc, kPlayerGetFileTrackInfoMessage, &messageInfo);
}
// PlayerSetFileTrackInfo
//
OSStatus PlayerSetFileTrackInfo(void *appCookie, ITAppProcPtr appProc, const ITFileSpec *fileSpec, const ITTrackInfo *trackInfo)
{
PlayerMessageInfo messageInfo;
memset(&messageInfo, 0, sizeof(messageInfo));
messageInfo.u.setFileTrackInfoMessage.fileSpec = fileSpec;
messageInfo.u.setFileTrackInfoMessage.trackInfo = trackInfo;
return ITCallApplication(appCookie, appProc, kPlayerSetFileTrackInfoMessage, &messageInfo);
}
// PlayerGetITTrackInfoSize
//
OSStatus PlayerGetITTrackInfoSize(void *appCookie, ITAppProcPtr appProc, UInt32 appPluginMajorVersion, UInt32 appPluginMinorVersion, UInt32 *itTrackInfoSize)
{
PlayerMessageInfo messageInfo;
OSStatus status;
/*
Note: appPluginMajorVersion and appPluginMinorVersion are the versions given to the plugin by iTunes in the plugin's init message.
These versions are *not* the version of the API used when the plugin was compiled.
*/
*itTrackInfoSize = 0;
memset(&messageInfo, 0, sizeof(messageInfo));
status = ITCallApplication(appCookie, appProc, kPlayerGetITTrackInfoSizeMessage, &messageInfo);
if( status == noErr )
{
*itTrackInfoSize = messageInfo.u.getITTrackInfoSizeMessage.itTrackInfoSize;
}
else if( appPluginMajorVersion == 10 && appPluginMinorVersion == 2 )
{
// iTunes 2.0.x
*itTrackInfoSize = ((UInt32)(uintptr_t) &((ITTrackInfo *) 0)->composer);
status = noErr;
}
else if( appPluginMajorVersion == 10 && appPluginMinorVersion == 3 )
{
// iTunes 3.0.x
*itTrackInfoSize = ((UInt32)(uintptr_t) &((ITTrackInfo *) 0)->beatsPerMinute);
status = noErr;
}
else
{
// iTunes 4.0 and later implement the kPlayerGetITTrackInfoSizeMessage message. If you got here
// then the appPluginMajorVersion or appPluginMinorVersion are incorrect.
status = paramErr;
}
if( status == noErr && (*itTrackInfoSize) > sizeof(ITTrackInfo) )
{
// iTunes is using a larger ITTrackInfo than the one when this plugin was compiled. Pin *itTrackInfoSize to the plugin's known size
*itTrackInfoSize = sizeof(ITTrackInfo);
}
return status;
}
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