src/add-ons/media/plugins/matroska/matroska_util.h

   1 /*
   2  * Copyright (c) 2004, Marcus Overhagen
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without modification,
   6  * are permitted provided that the following conditions are met:
   7  *
   8  *  * Redistributions of source code must retain the above copyright notice,
   9  *    this list of conditions and the following disclaimer.
  10  *  * Redistributions in binary form must reproduce the above copyright notice,
  11  *    this list of conditions and the following disclaimer in the documentation
  12  *    and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  18  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  19  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  21  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  22  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  23  * OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25 #ifndef _MATROSKA_UTIL_H
  26 #define _MATROSKA_UTIL_H
  27
  28 #include <SupportDefs.h>
  29
  30 bigtime_t       get_duration_in_us(uint64 duration);
  31 float           get_frame_rate(uint64 default_duration);
  32 uint64          get_frame_count_by_frame_rate(uint64 duration, float frame_rate);
  33 uint64          get_frame_count_by_default_duration(uint64 duration, uint64 default_duration);
  34
  35 void            get_pixel_aspect_ratio(uint16 *width_aspect_ratio, uint16 *height_aspect_ratio,
  36                                                                    unsigned int pixel_width, unsigned int pixel_height,
  37                                                                    unsigned int display_width,  unsigned int display_height);
  38
  39 #endif
  40