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141 lines
3.3 KiB
141 lines
3.3 KiB
5 years ago
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/*
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File: CGDataConsumer.h
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Contains: CoreGraphics data consumer
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Version: QuickTime 7.3
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Copyright: (c) 2007 (c) 2000-2001 by Apple Computer, Inc., all rights reserved.
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Bugs?: For bug reports, consult the following page on
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the World Wide Web:
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http://developer.apple.com/bugreporter/
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*/
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#ifndef CGDATACONSUMER_H_
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#define CGDATACONSUMER_H_
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#ifndef __CGBASE__
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#include <CGBase.h>
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#endif
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#ifndef __CFURL__
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#include <CFURL.h>
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#endif
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#if PRAGMA_ONCE
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#pragma once
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if PRAGMA_IMPORT
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#pragma import on
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#endif
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#if PRAGMA_STRUCT_ALIGN
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#pragma options align=mac68k
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#elif PRAGMA_STRUCT_PACKPUSH
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#pragma pack(push, 2)
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#elif PRAGMA_STRUCT_PACK
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#pragma pack(2)
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#endif
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typedef struct CGDataConsumer* CGDataConsumerRef;
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typedef CALLBACK_API_C( size_t , CGPutBytesProcPtr )(void *info, const void *buffer, size_t count);
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typedef CALLBACK_API_C( void , CGReleaseConsumerProcPtr )(void * info);
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/* Callbacks for accessing data.
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* `putBytes' copies `count' bytes from `buffer' to the consumer, and
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* returns the number of bytes copied. It should return 0 if no more data
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* can be written to the consumer.
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* `releaseConsumer', if non-NULL, is called when the consumer is freed. */
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struct CGDataConsumerCallbacks {
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CGPutBytesProcPtr putBytes;
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CGReleaseConsumerProcPtr releaseConsumer;
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};
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typedef struct CGDataConsumerCallbacks CGDataConsumerCallbacks;
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/* Create a data consumer using `callbacks' to handle the data. `info' is
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* passed to each of the callback functions. */
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/*
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* CGDataConsumerCreate()
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*
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* Availability:
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* Non-Carbon CFM: not available
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* CarbonLib: not available
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* Mac OS X: in version 10.0 and later
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*/
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EXTERN_API_C( CGDataConsumerRef )
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CGDataConsumerCreate(
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void * info,
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const CGDataConsumerCallbacks * callbacks);
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/* Create a data consumer which writes data to `url'. */
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/*
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* CGDataConsumerCreateWithURL()
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*
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* Availability:
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* Non-Carbon CFM: not available
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* CarbonLib: not available
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* Mac OS X: in version 10.0 and later
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*/
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EXTERN_API_C( CGDataConsumerRef )
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CGDataConsumerCreateWithURL(CFURLRef url);
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/* Increment the retain count of `consumer' and return it. All data
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* consumers are created with an initial retain count of 1. */
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/*
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* CGDataConsumerRetain()
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*
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* Availability:
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* Non-Carbon CFM: not available
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* CarbonLib: not available
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* Mac OS X: in version 10.0 and later
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*/
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EXTERN_API_C( CGDataConsumerRef )
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CGDataConsumerRetain(CGDataConsumerRef consumer);
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/* Decrement the retain count of `consumer'. If the retain count reaches
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* 0, then release it and any associated resources. */
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/*
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* CGDataConsumerRelease()
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*
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* Availability:
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* Non-Carbon CFM: not available
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* CarbonLib: not available
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* Mac OS X: in version 10.0 and later
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*/
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EXTERN_API_C( void )
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CGDataConsumerRelease(CGDataConsumerRef consumer);
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#if PRAGMA_STRUCT_ALIGN
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#pragma options align=reset
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#elif PRAGMA_STRUCT_PACKPUSH
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#pragma pack(pop)
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#elif PRAGMA_STRUCT_PACK
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#pragma pack()
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#endif
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#ifdef PRAGMA_IMPORT_OFF
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#pragma import off
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#elif PRAGMA_IMPORT
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#pragma import reset
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* CGDATACONSUMER_H_ */
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