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/* bzflag
* Copyright (c) 1993 - 2008 Tim Riker
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the license found in the file
* named LICENSE that should have accompanied this file.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef BZF_MEDIA_FILE_H
#define BZF_MEDIA_FILE_H
#include "common.h"
/* system interface headers */
#include <string>
/* common interface headers */
#include "bzfio.h"
// if HALF_RATE_AUDIO defined then use half the normal audio sample
// rate (and downsample the audio files to match). this reduces the
// demands on the system.
// #define HALF_RATE_AUDIO
/** This class is a base class for media files, which can be image files or
audio files. */
class MediaFile {
public:
/** Close the media file. This does *not* destroy the stream. */
virtual ~MediaFile();
/** Read an image file. Use delete[] to release the returned
image. Returns NULL on failure. Images are stored RGBA,
left to right, bottom to top. */
static unsigned char* readImage(std::string filename,
int* width, int* height);
// read a sound file. use delete[] to release the returned
// audio. returns NULL on failure. sounds are stored
// left/right.
// static float* readSound(const std::string& filename,
// int* numFrames, int* rate);
protected:
MediaFile(std::istream*);
/** Get the stream. */
std::istream* getStream() const { return stream; }
/** Return true if the stream is in a readable state. */
bool isOkay() const;
/** Utility method to read raw data. */
void readRaw(void* buffer, uint32_t bytes);
/** Utility method to skip data. */
void skip(uint32_t bytes);
/** Utility method to read a 2 byte little-endian number into host byte
order. */
uint16_t read16LE();
/** Utility method to read a 2 byte big-endian number into host byte
order. */
uint16_t read16BE();
/** Utility method to read a 4 byte little-endian number into host byte
order. */
uint32_t read32LE();
/** Utility method to read a 4 byte big-endian number into host byte
order. */
uint32_t read32BE();
/** Utility method to byte swap a little-endian 2 byte number in place
into host byte order. Returns the byte swapped data. */
static uint16_t swap16LE(uint16_t*);
/** Utility method to byte swap a big-endian 2 byte number in place into
host byte order. Returns the byte swapped data. */
static uint16_t swap16BE(uint16_t*);
/** Utility method to byte swap a little-endian 4 byte number in place
into host byte order. Returns the byte swapped data. */
static uint32_t swap32LE(uint32_t*);
/** Utility method to byte swap a big-endian 4 byte number in place into
host byte order. Returns the byte swapped data. */
static uint32_t swap32BE(uint32_t*);
private:
std::istream* stream;
};
#endif
// Local Variables: ***
// mode:C++ ***
// tab-width: 8 ***
// c-basic-offset: 2 ***
// indent-tabs-mode: t ***
// End: ***
// ex: shiftwidth=2 tabstop=8
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