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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
#define GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
#include <grpc/impl/codegen/port_platform.h>
#include <grpc/impl/codegen/grpc_types.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Returns a RAW byte buffer instance over the given slices (up to \a nslices).
*
* Increases the reference count for all \a slices processed. The user is
* responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
GRPCAPI grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slices,
size_t nslices);
/** Returns a *compressed* RAW byte buffer instance over the given slices (up to
* \a nslices). The \a compression argument defines the compression algorithm
* used to generate the data in \a slices.
*
* Increases the reference count for all \a slices processed. The user is
* responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
GRPCAPI grpc_byte_buffer* grpc_raw_compressed_byte_buffer_create(
grpc_slice* slices, size_t nslices, grpc_compression_algorithm compression);
/** Copies input byte buffer \a bb.
*
* Increases the reference count of all the source slices. The user is
* responsible for calling grpc_byte_buffer_destroy over the returned copy. */
GRPCAPI grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb);
/** Returns the size of the given byte buffer, in bytes. */
GRPCAPI size_t grpc_byte_buffer_length(grpc_byte_buffer* bb);
/** Destroys \a byte_buffer deallocating all its memory. */
GRPCAPI void grpc_byte_buffer_destroy(grpc_byte_buffer* byte_buffer);
/** Reader for byte buffers. Iterates over slices in the byte buffer */
struct grpc_byte_buffer_reader;
typedef struct grpc_byte_buffer_reader grpc_byte_buffer_reader;
/** Initialize \a reader to read over \a buffer.
* Returns 1 upon success, 0 otherwise. */
GRPCAPI int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
grpc_byte_buffer* buffer);
/** Cleanup and destroy \a reader */
GRPCAPI void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader* reader);
/** Updates \a slice with the next piece of data from from \a reader and returns
* 1. Returns 0 at the end of the stream. Caller is responsible for calling
* grpc_slice_unref on the result. */
GRPCAPI int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
grpc_slice* slice);
/** Merge all data from \a reader into single slice */
GRPCAPI grpc_slice
grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader* reader);
/** Returns a RAW byte buffer instance from the output of \a reader. */
GRPCAPI grpc_byte_buffer* grpc_raw_byte_buffer_from_reader(
grpc_byte_buffer_reader* reader);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_IMPL_CODEGEN_BYTE_BUFFER_H */
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