mirror of https://git.ffmpeg.org/ffmpeg.git
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
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* a52.h
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* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
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* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of a52dec, a free ATSC A-52 stream decoder.
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* See http://liba52.sourceforge.net/ for updates.
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*
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* a52dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* a52dec 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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#ifndef A52_H
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#define A52_H
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#include "../avcodec.h"
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#undef malloc
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#undef free
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#undef realloc
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#if defined(LIBA52_FIXED)
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typedef int32_t sample_t;
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typedef int32_t level_t;
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#elif defined(LIBA52_DOUBLE)
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typedef double sample_t;
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typedef double level_t;
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#else
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typedef float sample_t;
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typedef float level_t;
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#endif
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typedef struct a52_state_s a52_state_t;
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#define A52_CHANNEL 0
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#define A52_MONO 1
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#define A52_STEREO 2
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#define A52_3F 3
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#define A52_2F1R 4
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#define A52_3F1R 5
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#define A52_2F2R 6
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#define A52_3F2R 7
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#define A52_CHANNEL1 8
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#define A52_CHANNEL2 9
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#define A52_DOLBY 10
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#define A52_CHANNEL_MASK 15
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#define A52_LFE 16
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#define A52_ADJUST_LEVEL 32
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a52_state_t * a52_init (uint32_t mm_accel);
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sample_t * a52_samples (a52_state_t * state);
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int a52_syncinfo (uint8_t * buf, int * flags,
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int * sample_rate, int * bit_rate);
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int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
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level_t * level, sample_t bias);
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void a52_dynrng (a52_state_t * state,
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level_t (* call) (level_t, void *), void * data);
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int a52_block (a52_state_t * state);
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void a52_free (a52_state_t * state);
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#endif /* A52_H */
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