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1 /*
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2 * E-AC-3 encoder
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3 * Copyright (c) 2011 Justin Ruggles <justin.ruggles@gmail.com>
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4 *
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5 * This file is part of Libav.
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6 *
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7 * Libav is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
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9 * License as published by the Free Software Foundation; either
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10 * version 2.1 of the License, or (at your option) any later version.
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11 *
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12 * Libav is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with Libav; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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20 */
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21
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22 /**
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23 * @file
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24 * E-AC-3 encoder
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25 */
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26
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27 #ifndef AVCODEC_EAC3ENC_H
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28 #define AVCODEC_EAC3ENC_H
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29
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30 #include "ac3enc.h"
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31
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32 /**
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33 * Initialize E-AC-3 exponent tables.
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34 */
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35 void ff_eac3_exponent_init(void);
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36
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37 /**
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38 * Determine frame exponent strategy use and indices.
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39 */
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40 void ff_eac3_get_frame_exp_strategy(AC3EncodeContext *s);
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41
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42 /**
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43 * Set coupling states.
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44 * This determines whether certain flags must be written to the bitstream or
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45 * whether they will be implicitly already known by the decoder.
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46 */
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47 void ff_eac3_set_cpl_states(AC3EncodeContext *s);
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48
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49 /**
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50 * Write the E-AC-3 frame header to the output bitstream.
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51 */
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52 void ff_eac3_output_frame_header(AC3EncodeContext *s);
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53
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54 #endif /* AVCODEC_EAC3ENC_H */
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