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//
// RiffFile.c - MrsWatson
// Created by Nik Reiman on 8/13/12.
// Copyright (c) 2012 Teragon Audio. 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.
//
// 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 HOLDER 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.
//
#include <stdlib.h>
#include <string.h>
#include "base/Endian.h"
#include "io/RiffFile.h"
RiffChunk newRiffChunk(void)
{
//anything weird about this? nope, lets get back to sourcewave
RiffChunk chunk = (RiffChunk)malloc(sizeof(RiffChunkMembers));
memset(chunk->id, 0, 5);
chunk->size = 0;
chunk->data = NULL;
return chunk;
}
boolByte riffChunkReadNext(RiffChunk self, FILE *fileHandle, boolByte readData)
{
size_t itemsRead = 0;
byte *chunkSize;
if (fileHandle != NULL) {
itemsRead = fread(self->id, 1, 4, fileHandle);
if (itemsRead != 4) {
return false;
}
chunkSize = (byte *)malloc(sizeof(byte) * 4);
memset(chunkSize, 0, 4);
itemsRead = fread(chunkSize, 1, 4, fileHandle);
if (itemsRead != 4) {
free(chunkSize);
return false;
}
self->size = convertByteArrayToUnsignedInt(chunkSize);
free(chunkSize);
if (self->size > 0 && readData) {
self->data = (byte *)malloc(self->size);
itemsRead = fread(self->data, 1, self->size, fileHandle);
if (itemsRead != self->size) {
return false;
}
}
}
return (boolByte)!feof(fileHandle);
}
boolByte riffChunkIsIdEqualTo(const RiffChunk self, const char *id)
{
return (boolByte)(strncmp(self->id, id, 4) == 0);
}
void freeRiffChunk(RiffChunk self)
{
if (self->data) {
free(self->data);
}
free(self);
}
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