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43 lines
1.4 KiB
43 lines
1.4 KiB
/* |
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* FLAC common code |
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* Copyright (c) 2009 Justin Ruggles |
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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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#include "flac.h" |
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int ff_flac_get_max_frame_size(int blocksize, int ch, int bps) |
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{ |
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/* Technically, there is no limit to FLAC frame size, but an encoder |
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should not write a frame that is larger than if verbatim encoding mode |
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were to be used. */ |
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int count; |
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count = 16; /* frame header */ |
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count += ch * ((7+bps+7)/8); /* subframe headers */ |
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if (ch == 2) { |
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/* for stereo, need to account for using decorrelation */ |
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count += (( 2*bps+1) * blocksize + 7) / 8; |
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} else { |
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count += ( ch*bps * blocksize + 7) / 8; |
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} |
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count += 2; /* frame footer */ |
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return count; |
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}
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