| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * MPEG Audio common code | ||
| 3 | * Copyright (c) 2001, 2002 Fabrice Bellard | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * @file | ||
| 24 | * MPEG Audio common code. | ||
| 25 | */ | ||
| 26 | |||
| 27 | #include "mpegaudio.h" | ||
| 28 | |||
| 29 | |||
| 30 | /* bitrate is in kb/s */ | ||
| 31 | 7347 | int ff_mpa_l2_select_table(int bitrate, int nb_channels, int freq, int lsf) | |
| 32 | { | ||
| 33 | int ch_bitrate, table; | ||
| 34 | |||
| 35 | 7347 | ch_bitrate = bitrate / nb_channels; | |
| 36 |
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7347 | if (!lsf) { |
| 37 |
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7347 | if ((freq == 48000 && ch_bitrate >= 56) || |
| 38 |
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7070 | (ch_bitrate >= 56 && ch_bitrate <= 80)) |
| 39 | 932 | table = 0; | |
| 40 |
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6415 | else if (freq != 48000 && ch_bitrate >= 96) |
| 41 | 6415 | table = 1; | |
| 42 | ✗ | else if (freq != 32000 && ch_bitrate <= 48) | |
| 43 | ✗ | table = 2; | |
| 44 | else | ||
| 45 | ✗ | table = 3; | |
| 46 | } else { | ||
| 47 | ✗ | table = 4; | |
| 48 | } | ||
| 49 | 7347 | return table; | |
| 50 | } | ||
| 51 |