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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 Mohamed Tarek
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _RM_H
#define _RM_H
#include <stdio.h>
#include <inttypes.h>
#include "bytestream.h"
#define MAX_EXTRADATA_SIZE 16
#define DATA_HEADER_SIZE 18
#define PACKET_HEADER_SIZE 12
enum codecs {
CODEC_COOK,
CODEC_AAC,
CODEC_AC3,
CODEC_ATRAC
};
typedef struct rm_packet
{
uint8_t *frames[100]; /* Pointers to ordered audio frames in buffer */
uint16_t version;
uint16_t length;
uint32_t timestamp;
uint16_t stream_number;
uint8_t flags;
#ifdef TEST
uint8_t data[30000]; /* Reordered data. No malloc, hence the size */
#endif
}RMPacket;
typedef struct rm_context
{
/* Demux Context */
int old_format;
int current_stream;
int remaining_len;
int audio_stream_num; /*< Stream number for audio packets*/
int audio_pkt_cnt; /* Output packet counter*/
/* Stream Variables */
uint32_t data_offset;
uint32_t duration;
uint32_t audiotimestamp; /* Audio packet timestamp*/
uint16_t sub_packet_cnt; /* Subpacket counter, used while reading */
uint16_t sub_packet_size, sub_packet_h, coded_framesize; /* Descrambling parameters from container */
uint16_t audio_framesize; /* Audio frame size from container */
uint16_t sub_packet_lengths[16]; /* Length of each subpacket */
/* Codec Context */
enum codecs codec_type;
uint16_t block_align;
uint32_t nb_packets;
int frame_number;
uint16_t sample_rate;
uint16_t nb_channels;
uint32_t bit_rate;
uint16_t flags;
/*codec extradata*/
uint32_t extradata_size;
uint8_t codec_extradata[MAX_EXTRADATA_SIZE];
} RMContext;
int real_parse_header(int fd, RMContext *rmctx);
/* Get a (sub_packet_h*frames_per_packet) number of audio frames from a memory buffer */
int rm_get_packet(uint8_t **src,RMContext *rmctx, RMPacket *pkt);
#ifdef TEST
int filesize(int fd);
void advance_buffer(uint8_t **buf, int val);
/* Get a (sub_packet_h*frames_per_packet) number of audio frames from a file descriptor */
void rm_get_packet_fd(int fd,RMContext *rmctx, RMPacket *pkt);
#endif /* TEST */
#endif /* _RM_H */
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