Golang struct_jpeg_compress_struct.dest示例

示例#1

文件： destinationManager.go 项目： edvakf/go-libjpeg

func makeDestinationManager(dest io.Writer, cinfo *C.struct_jpeg_compress_struct) (ret destinationManager) {
	ret.magic = magic
	ret.dest = dest
	ret.pub.init_destination = (*[0]byte)(C.destinationInit)
	ret.pub.empty_output_buffer = (*[0]byte)(C.destinationEmpty)
	ret.pub.term_destination = (*[0]byte)(C.destinationTerm)
	ret.pub.free_in_buffer = writeBufferSize
	ret.pub.next_output_byte = (*C.JOCTET)(&ret.buffer[0])
	cinfo.dest = &ret.pub
	return
}

示例#2

文件： jpeg_write.go 项目： ieee0824/go-thumber

func makeDestinationManager(dest io.Writer, cinfo *C.struct_jpeg_compress_struct) (ret *destinationManager) {
	ret = (*destinationManager)(C.malloc(C.size_t(unsafe.Sizeof(destinationManager{}))))
	if ret == nil {
		panic("Failed to allocate destinationManager")
	}
	ret.magic = magic
	ret.dest = dest
	ret.pub.init_destination = (*[0]byte)(C.destinationInit)
	ret.pub.empty_output_buffer = (*[0]byte)(C.destinationEmpty)
	ret.pub.term_destination = (*[0]byte)(C.destinationTerm)
	ret.pub.free_in_buffer = writeBufferSize
	ret.pub.next_output_byte = (*C.JOCTET)(&ret.buffer[0])
	cinfo.dest = &ret.pub
	return
}

示例#3

文件： destinationManager.go 项目： ieee0824/go-libjpeg

func makeDestinationManager(dest io.Writer, cinfo *C.struct_jpeg_compress_struct) (mgr *destinationManager) {
	mgr = new(destinationManager)
	mgr.dest = dest
	mgr.pub = C.malloc_jpeg_destination_mgr()
	if mgr.pub == nil {
		panic("Failed to allocate C.struct_jpeg_destination_mgr")
	}
	mgr.buffer = C.malloc(writeBufferSize)
	if mgr.buffer == nil {
		panic("Failed to allocate buffer")
	}
	mgr.pub.init_destination = (*[0]byte)(C.destinationInit)
	mgr.pub.empty_output_buffer = (*[0]byte)(C.destinationEmpty)
	mgr.pub.term_destination = (*[0]byte)(C.destinationTerm)
	mgr.pub.free_in_buffer = writeBufferSize
	mgr.pub.next_output_byte = (*C.JOCTET)(mgr.buffer)
	cinfo.dest = mgr.pub

	destinationManagerMapMutex.Lock()
	defer destinationManagerMapMutex.Unlock()
	destinationManagerMap[uintptr(unsafe.Pointer(mgr.pub))] = mgr

	return
}