96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*
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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 mpc_reader.c
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/// Contains implementations for simple file-based mpc_reader
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#include <mpcdec/mpcdec.h>
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/// mpc_reader callback implementations
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static mpc_int32_t
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read_impl(void *data, void *ptr, mpc_int32_t size)
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{
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mpc_reader_file *d = (mpc_reader_file *) data;
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return fread(ptr, 1, size, d->file);
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}
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static mpc_bool_t
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seek_impl(void *data, mpc_int32_t offset)
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{
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mpc_reader_file *d = (mpc_reader_file *) data;
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return d->is_seekable ? !fseek(d->file, offset, SEEK_SET) : FALSE;
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}
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static mpc_int32_t
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tell_impl(void *data)
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{
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mpc_reader_file *d = (mpc_reader_file *) data;
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return ftell(d->file);
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}
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static mpc_int32_t
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get_size_impl(void *data)
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{
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mpc_reader_file *d = (mpc_reader_file *) data;
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return d->file_size;
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}
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static mpc_bool_t
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canseek_impl(void *data)
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{
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mpc_reader_file *d = (mpc_reader_file *) data;
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return d->is_seekable;
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}
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void
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mpc_reader_setup_file_reader(mpc_reader_file *p_reader, FILE *input)
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{
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p_reader->reader.seek = seek_impl;
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p_reader->reader.read = read_impl;
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p_reader->reader.tell = tell_impl;
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p_reader->reader.get_size = get_size_impl;
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p_reader->reader.canseek = canseek_impl;
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p_reader->reader.data = p_reader; // point back to ourselves
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p_reader->file = input;
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p_reader->is_seekable = TRUE;
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fseek(input, 0, SEEK_END);
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p_reader->file_size = ftell(input);
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fseek(input, 0, SEEK_SET);
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}
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