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-/*
- * Copyright (C) 2003-2013 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifndef MPD_DECODER_BUFFER_HXX
-#define MPD_DECODER_BUFFER_HXX
-
-#include "Compiler.h"
-
-#include <stddef.h>
-
-/**
- * This objects handles buffered reads in decoder plugins easily. You
- * create a buffer object, and use its high-level methods to fill and
- * read it. It will automatically handle shifting the buffer.
- */
-struct DecoderBuffer;
-
-struct Decoder;
-struct InputStream;
-
-/**
- * Creates a new buffer.
- *
- * @param decoder the decoder object, used for decoder_read(), may be nullptr
- * @param is the input stream object where we should read from
- * @param size the maximum size of the buffer
- * @return the new decoder_buffer object
- */
-DecoderBuffer *
-decoder_buffer_new(Decoder *decoder, InputStream &is,
- size_t size);
-
-/**
- * Frees resources used by the decoder_buffer object.
- */
-void
-decoder_buffer_free(DecoderBuffer *buffer);
-
-gcc_pure
-const InputStream &
-decoder_buffer_get_stream(const DecoderBuffer *buffer);
-
-gcc_pure
-bool
-decoder_buffer_is_empty(const DecoderBuffer *buffer);
-
-gcc_pure
-bool
-decoder_buffer_is_full(const DecoderBuffer *buffer);
-
-void
-decoder_buffer_clear(DecoderBuffer *buffer);
-
-/**
- * Read data from the input_stream and append it to the buffer.
- *
- * @return true if data was appended; false if there is no data
- * available (yet), end of file, I/O error or a decoder command was
- * received
- */
-bool
-decoder_buffer_fill(DecoderBuffer *buffer);
-
-/**
- * How many bytes are stored in the buffer?
- */
-gcc_pure
-size_t
-decoder_buffer_available(const DecoderBuffer *buffer);
-
-/**
- * Reads data from the buffer. This data is not yet consumed, you
- * have to call decoder_buffer_consume() to do that. The returned
- * buffer becomes invalid after a decoder_buffer_fill() or a
- * decoder_buffer_consume() call.
- *
- * @param buffer the decoder_buffer object
- * @param length_r pointer to a size_t where you will receive the
- * number of bytes available
- * @return a pointer to the read buffer, or nullptr if there is no data
- * available
- */
-const void *
-decoder_buffer_read(const DecoderBuffer *buffer, size_t *length_r);
-
-/**
- * Consume (delete, invalidate) a part of the buffer. The "nbytes"
- * parameter must not be larger than the length returned by
- * decoder_buffer_read().
- *
- * @param buffer the decoder_buffer object
- * @param nbytes the number of bytes to consume
- */
-void
-decoder_buffer_consume(DecoderBuffer *buffer, size_t nbytes);
-
-/**
- * Skips the specified number of bytes, discarding its data.
- *
- * @param buffer the decoder_buffer object
- * @param nbytes the number of bytes to skip
- * @return true on success, false on error
- */
-bool
-decoder_buffer_skip(DecoderBuffer *buffer, size_t nbytes);
-
-#endif