/*
  * common code shared by all WMA variants
  *

  * This file is part of FFmpeg.

  *

  * FFmpeg is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *

  * FFmpeg is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public

  * License along with FFmpeg; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "libavutil/attributes.h"
 #include "wma_common.h"
 
 /**
  *@brief Get the samples per frame for this stream.
  *@param sample_rate output sample_rate
  *@param version wma version
  *@param decode_flags codec compression features
  *@return log2 of the number of output samples per frame
  */

 av_cold int ff_wma_get_frame_len_bits(int sample_rate, int version,

                                       unsigned int decode_flags)
 {
 
     int frame_len_bits;
 
     if (sample_rate <= 16000) {
         frame_len_bits = 9;
     } else if (sample_rate <= 22050 ||
              (sample_rate <= 32000 && version == 1)) {
         frame_len_bits = 10;
     } else if (sample_rate <= 48000 || version < 3) {
         frame_len_bits = 11;
     } else if (sample_rate <= 96000) {
         frame_len_bits = 12;
     } else {
         frame_len_bits = 13;
     }
 
     if (version == 3) {
         int tmp = decode_flags & 0x6;
         if (tmp == 0x2) {
             ++frame_len_bits;
         } else if (tmp == 0x4) {
             --frame_len_bits;
         } else if (tmp == 0x6) {
             frame_len_bits -= 2;
         }
     }
 
     return frame_len_bits;
 }