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/* |
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* MPEG Audio common code |
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* Copyright (c) 2001, 2002 Fabrice Bellard |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* MPEG Audio common code. |
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*/ |
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#include "mpegaudio.h" |
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/* bitrate is in kb/s */ |
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int ff_mpa_l2_select_table(int bitrate, int nb_channels, int freq, int lsf) |
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{ |
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int ch_bitrate, table; |
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ch_bitrate = bitrate / nb_channels; |
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✓✗ |
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if (!lsf) { |
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✓✓✗✓
✓✗ |
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if ((freq == 48000 && ch_bitrate >= 56) || |
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✓✓ |
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(ch_bitrate >= 56 && ch_bitrate <= 80)) |
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table = 0; |
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✓✗✓✗
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else if (freq != 48000 && ch_bitrate >= 96) |
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table = 1; |
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else if (freq != 32000 && ch_bitrate <= 48) |
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table = 2; |
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else |
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table = 3; |
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} else { |
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table = 4; |
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} |
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return table; |
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} |