apps/codecs/libmusepack/internal.h

   1 /*
   2   Copyright (c) 2005, The Musepack Development Team
   3   All rights reserved.
   4
   5   Redistribution and use in source and binary forms, with or without
   6   modification, are permitted provided that the following conditions are
   7   met:
   8
   9   * Redistributions of source code must retain the above copyright
  10   notice, this list of conditions and the following disclaimer.
  11
  12   * Redistributions in binary form must reproduce the above
  13   copyright notice, this list of conditions and the following
  14   disclaimer in the documentation and/or other materials provided
  15   with the distribution.
  16
  17   * Neither the name of the The Musepack Development Team nor the
  18   names of its contributors may be used to endorse or promote
  19   products derived from this software without specific prior
  20   written permission.
  21
  22   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33 */
  34
  35 /// \file internal.h
  36 /// Definitions and structures used only internally by the libmpcdec.
  37
  38 #ifndef _mpcdec_internal_h
  39 #define _mpcdec_internal_h
  40
  41
  42 enum {
  43     MPC_DECODER_SYNTH_DELAY = 481
  44 };
  45
  46 /// Big/little endian 32 bit byte swapping routine.
  47 /* Use our Rockbox (maybe) optimised swap routine instead */
  48 #define mpc_swap32(x) swap32(x)
  49 #if 0
  50 static __inline
  51 mpc_uint32_t mpc_swap32(mpc_uint32_t val) {
  52     return (((val & 0xff000000) >> 24) | ((val & 0x00ff0000) >> 8) |
  53             ((val & 0x0000ff00) <<  8) | ((val & 0x000000ff) << 24));
  54 }
  55 #endif
  56
  57 #ifndef min
  58 #define min(a, b) (((a) < (b)) ? (a) : (b))
  59 #endif
  60
  61 /// Searches for a ID3v2-tag and reads the length (in bytes) of it.
  62 /// \param reader supplying raw stream data
  63 /// \return size of tag, in bytes
  64 /// \return -1 on errors of any kind
  65 mpc_int32_t JumpID3v2(mpc_reader* fp);
  66
  67 /// helper functions used by multiple files
  68 mpc_uint32_t mpc_random_int(mpc_decoder *d); // in synth_filter.c
  69 void mpc_decoder_initialisiere_quantisierungstabellen(mpc_decoder *d, double scale_factor);
  70 void mpc_decoder_synthese_filter_float(mpc_decoder *d, MPC_SAMPLE_FORMAT* OutData);
  71
  72 #endif // _mpcdec_internal_h
  73