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/* |
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* codec2 utility functions |
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* Copyright (c) 2017 Tomas Härdin |
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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 <string.h> |
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#include "internal.h" |
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#include "libavcodec/codec2utils.h" |
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int avpriv_codec2_mode_bit_rate(void *logctx, int mode) |
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{ |
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int frame_size = avpriv_codec2_mode_frame_size(logctx, mode); |
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int block_align = avpriv_codec2_mode_block_align(logctx, mode); |
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if (frame_size <= 0 || block_align <= 0) { |
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return 0; |
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} |
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return 8 * 8000 * block_align / frame_size; |
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} |
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int avpriv_codec2_mode_frame_size(void *logctx, int mode) |
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{ |
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int frame_size_table[AVPRIV_CODEC2_MODE_MAX+1] = { |
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160, // 3200 |
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160, // 2400 |
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320, // 1600 |
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320, // 1400 |
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320, // 1300 |
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320, // 1200 |
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320, // 700 |
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320, // 700B |
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320, // 700C |
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}; |
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if (mode < 0 || mode > AVPRIV_CODEC2_MODE_MAX) { |
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av_log(logctx, AV_LOG_ERROR, "unknown codec2 mode %i, can't find frame_size\n", mode); |
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return 0; |
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} else { |
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return frame_size_table[mode]; |
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} |
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} |
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int avpriv_codec2_mode_block_align(void *logctx, int mode) |
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{ |
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int block_align_table[AVPRIV_CODEC2_MODE_MAX+1] = { |
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8, // 3200 |
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6, // 2400 |
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8, // 1600 |
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7, // 1400 |
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7, // 1300 |
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6, // 1200 |
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4, // 700 |
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4, // 700B |
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4, // 700C |
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}; |
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if (mode < 0 || mode > AVPRIV_CODEC2_MODE_MAX) { |
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av_log(logctx, AV_LOG_ERROR, "unknown codec2 mode %i, can't find block_align\n", mode); |
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return 0; |
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} else { |
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return block_align_table[mode]; |
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} |
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} |