83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
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/*
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Copyright (c) 2005, The Musepack Development Team
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution.
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* Neither the name of the The Musepack Development Team nor the
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names of its contributors may be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/// \file reader.h
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#ifndef _mpcdec_reader_h_
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#define _mpcdec_reader_h_
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/// \brief Stream reader interface structure.
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///
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/// This is the structure you must supply to the musepack decoding library
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/// to feed it with raw data. Implement the five member functions to provide
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/// a functional reader.
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typedef struct mpc_reader_t {
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/// Reads size bytes of data into buffer at ptr.
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mpc_int32_t (*read)(void *t, void *ptr, mpc_int32_t size);
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/// Seeks to byte position offset.
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mpc_bool_t (*seek)(void *t, mpc_int32_t offset);
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/// Returns the current byte offset in the stream.
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mpc_int32_t (*tell)(void *t);
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/// Returns the total length of the source stream, in bytes.
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mpc_int32_t (*get_size)(void *t);
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/// True if the stream is a seekable stream.
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mpc_bool_t (*canseek)(void *t);
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/// Field that can be used to identify a particular instance of
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/// reader or carry along data associated with that reader.
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void *data;
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} mpc_reader;
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typedef struct mpc_reader_file_t {
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mpc_reader reader;
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FILE *file;
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long file_size;
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mpc_bool_t is_seekable;
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} mpc_reader_file;
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/// Initializes reader with default stdio file reader implementation. Use
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/// this if you're just reading from a plain file.
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///
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/// \param r reader struct to initalize
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/// \param input input stream to attach to the reader
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void mpc_reader_setup_file_reader(mpc_reader_file *r, FILE *input);
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#endif // _mpcdec_reader_h_
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