1 files changed, 96 insertions, 0 deletions
diff --git a/src/libmusepack/mpc_reader.c b/src/libmusepack/mpc_reader.c
new file mode 100644
index 000000000..d1719f916
--- /dev/null
+++ b/src/libmusepack/mpc_reader.c
@@ -0,0 +1,96 @@
+/*
+  Copyright (c) 2004, The Musepack Development Team
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are
+  met:
+
+  * Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+
+  * Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the following
+  disclaimer in the documentation and/or other materials provided
+  with the distribution.
+
+  * Neither the name of the The Musepack Development Team nor the
+  names of its contributors may be used to endorse or promote
+  products derived from this software without specific prior
+  written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/// \file mpc_reader.c
+/// Contains implementations for simple file-based mpc_reader
+
+#include "musepack/musepack.h"
+
+/// mpc_reader callback implementations
+static mpc_int32_t
+read_impl(void *data, void *ptr, mpc_int32_t size)
+{
+    mpc_reader *d = (mpc_reader *) data;
+
+    return fread(ptr, 1, size, d->file);
+}
+
+static BOOL
+seek_impl(void *data, int offset)
+{
+    mpc_reader *d = (mpc_reader *) data;
+
+    return d->is_seekable ? !fseek(d->file, offset, SEEK_SET) : FALSE;
+}
+
+static mpc_int32_t
+tell_impl(void *data)
+{
+    mpc_reader *d = (mpc_reader *) data;
+
+    return ftell(d->file);
+}
+
+static mpc_int32_t
+get_size_impl(void *data)
+{
+    mpc_reader *d = (mpc_reader *) data;
+
+    return d->file_size;
+}
+
+static BOOL
+canseek_impl(void *data)
+{
+    mpc_reader *d = (mpc_reader *) data;
+
+    return d->is_seekable;
+}
+
+void
+mpc_reader_setup_file_reader(mpc_reader *reader, FILE *input)
+{
+    reader->seek = seek_impl;
+    reader->read = read_impl;
+    reader->tell = tell_impl;
+    reader->get_size = get_size_impl;
+    reader->canseek = canseek_impl;
+    reader->data = reader; // point back to ourselves
+
+    reader->file = input;
+    reader->is_seekable = TRUE;
+    fseek(reader->file, 0, SEEK_END);
+    reader->file_size = ftell(reader->file);
+    fseek(reader->file, 0, SEEK_SET);
+}