apps/codecs/libcook/rm2wav.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 Mohamed Tarek
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #ifndef _RM2WAV_H
  22 #define _RM2WAV_H
  23
  24 #include <stdio.h>
  25 #include <stdint.h>
  26
  27 typedef struct rm_packet
  28 {
  29     uint8_t  data[30000]; /* Reordered data. No malloc, hence the size */
  30     uint16_t version;
  31     uint16_t length;
  32     uint32_t timestamp;
  33     uint16_t stream_number;
  34     uint8_t  flags;
  35 }RMPacket;
  36
  37 typedef struct rm_context
  38 {
  39     /* Demux Context */
  40     int old_format;
  41     int current_stream;
  42     int remaining_len;
  43     int audio_stream_num; /*< Stream number for audio packets*/
  44     int audio_pkt_cnt; /* Output packet counter*/
  45
  46     /* Stream Variables */
  47     uint32_t audiotimestamp; /* Audio packet timestamp*/
  48     uint16_t sub_packet_cnt; /* Subpacket counter, used while reading */
  49     uint16_t sub_packet_size, sub_packet_h, coded_framesize; /* Descrambling parameters from container */
  50     uint16_t audio_framesize; /* Audio frame size from container */
  51     uint16_t sub_packet_lengths[16]; /* Length of each subpacket */
  52
  53     /* Codec Context */
  54     uint16_t block_align;
  55     uint32_t nb_packets;
  56     int frame_number;
  57     uint32_t extradata_size;
  58     uint16_t sample_rate;
  59     uint16_t nb_channels;
  60     uint32_t bit_rate;
  61     uint16_t flags;
  62
  63     /*cook extradata*/
  64     uint32_t cook_version;
  65     uint16_t samples_pf_pc;    /* samples per frame per channel */
  66     uint16_t nb_subbands;      /* number of subbands in the frequency domain */
  67     /* extra 8 bytes for stereo data */
  68     uint32_t unused;
  69     uint16_t js_subband_start; /* joint stereo subband start */
  70     uint16_t js_vlc_bits;
  71
  72 } RMContext;
  73
  74 int open_wav(char* filename);
  75 void close_wav(int fd, RMContext *rmctx);
  76 int real_parse_header(int fd, RMContext *rmctx);
  77 void rm_get_packet(int fd,RMContext *rmctx, RMPacket *pkt);
  78 #endif