mirror of
https://github.com/alsa-project/alsa-tools.git
synced 2025-10-29 05:40:25 -04:00
97a55787e6
- added getopt_long to parse the command line options - added -D (--device) option - added -q (--quiet) option - added -I (--iec958) option - added AC3 to IEC958 encapsulation code (not tested) - addec xrun detection and restart
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
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* ac3.h
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*
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* Copyright (C) Aaron Holtzman - May 1999
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*
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* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
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*
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* ac3dec 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, or (at your option)
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* any later version.
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*
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* ac3dec 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 GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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*/
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#ifndef AARONS_TYPES
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#define AARONS_TYPES
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typedef unsigned long long uint_64;
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typedef unsigned int uint_32;
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typedef unsigned short uint_16;
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typedef unsigned char uint_8;
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typedef signed long long sint_64;
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typedef signed int sint_32;
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typedef signed short sint_16;
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typedef signed char sint_8;
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#endif
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#define AC3_DOLBY_SURR_ENABLE 0x1
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#define AC3_3DNOW_ENABLE 0x2
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#define AC3_MMX_ENABLE 0x4
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#define AC3_ALTIVEC_ENABLE 0x8
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#define AC3_QUIET 0x10
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typedef struct ac3_config_s
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{
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//Bit flags that enable various things
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uint_32 flags;
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//Callback that points the decoder to new stream data
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ssize_t (*fill_buffer_callback)(uint_8 **, uint_8 **);
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//Number of discrete channels in final output (for downmixing)
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uint_16 num_output_ch;
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//Which channel of a dual mono stream to select
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uint_16 dual_mono_ch_sel;
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} ac3_config_t;
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typedef struct ac3_frame_s
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{
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uint_32 sampling_rate;
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sint_16 *audio_data;
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} ac3_frame_t;
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void ac3_init(ac3_config_t *config);
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ac3_frame_t* ac3_decode_frame(void);
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