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/*
* dca.h
* Copyright (C) 2004 Gildas Bazin <gbazin@videolan.org>
*
* This file is part of libdca, a free DTS Coherent Acoustics stream decoder.
* See http://www.videolan.org/developers/libdca.html for updates.
*
* libdca 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 of the License, or
* (at your option) any later version.
*
* libdca 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 this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef LIBDCA_DCA_H
#define LIBDCA_DCA_H
/* x86 accelerations */
#define MM_ACCEL_X86_MMX 0x80000000
#define MM_ACCEL_X86_3DNOW 0x40000000
#define MM_ACCEL_X86_MMXEXT 0x20000000
uint32_t mm_accel (void);
#if defined(LIBDCA_FIXED)
typedef int32_t sample_t;
typedef int32_t level_t;
#elif defined(LIBDCA_DOUBLE)
typedef double sample_t;
typedef double level_t;
#else
typedef float sample_t;
typedef float level_t;
#endif
typedef struct dca_state_s dca_state_t;
#define DCA_MONO 0
#define DCA_CHANNEL 1
#define DCA_STEREO 2
#define DCA_STEREO_SUMDIFF 3
#define DCA_STEREO_TOTAL 4
#define DCA_3F 5
#define DCA_2F1R 6
#define DCA_3F1R 7
#define DCA_2F2R 8
#define DCA_3F2R 9
#define DCA_4F2R 10
#define DCA_DOLBY 101 /* FIXME */
#define DCA_CHANNEL_MAX DCA_3F2R /* We don't handle anything above that */
#define DCA_CHANNEL_BITS 6
#define DCA_CHANNEL_MASK 0x3F
#define DCA_LFE 0x80
#define DCA_ADJUST_LEVEL 0x100
dca_state_t * dca_init (uint32_t mm_accel);
int dca_syncinfo (dca_state_t *state, uint8_t * buf, int * flags,
int * sample_rate, int * bit_rate, int *frame_length);
int dca_frame (dca_state_t * state, uint8_t * buf, int * flags,
level_t * level, sample_t bias);
void dca_dynrng (dca_state_t * state,
level_t (* call) (level_t, void *), void * data);
int dca_blocks_num (dca_state_t * state);
int dca_block (dca_state_t * state);
sample_t * dca_samples (dca_state_t * state);
void dca_free (dca_state_t * state);
#endif /* LIBDCA_DCA_H */
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