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Added ac3dec 0.6.1 with native ALSA driver.

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This commit is contained in:
Jaroslav Kysela 2001-04-17 19:31:03 +00:00
parent f2d80b5b5d
commit 28ff64db0a
50 changed files with 6094 additions and 0 deletions
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62
ac3dec/libac3/ac3.h Normal file
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/*
* ac3.h
*
* Copyright (C) Aaron Holtzman - May 1999
*
* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
*
* ac3dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* ac3dec is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
*/
#ifndef AARONS_TYPES
#define AARONS_TYPES
typedef unsigned long long uint_64;
typedef unsigned int uint_32;
typedef unsigned short uint_16;
typedef unsigned char uint_8;
typedef signed long long sint_64;
typedef signed int sint_32;
typedef signed short sint_16;
typedef signed char sint_8;
#endif
#define AC3_DOLBY_SURR_ENABLE 0x1
#define AC3_3DNOW_ENABLE 0x2
#define AC3_MMX_ENABLE 0x4
#define AC3_ALTIVEC_ENABLE 0x8
typedef struct ac3_config_s
{
//Bit flags that enable various things
uint_32 flags;
//Callback that points the decoder to new stream data
void (*fill_buffer_callback)(uint_8 **, uint_8 **);
//Number of discrete channels in final output (for downmixing)
uint_16 num_output_ch;
//Which channel of a dual mono stream to select
uint_16 dual_mono_ch_sel;
} ac3_config_t;
typedef struct ac3_frame_s
{
uint_32 sampling_rate;
sint_16 *audio_data;
} ac3_frame_t;
void ac3_init(ac3_config_t *config);
ac3_frame_t* ac3_decode_frame(void);