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# dts.h

    00001 /*
    00002  * dts.h
    00003  * Copyright (C) 2004 Gildas Bazin <gbazin@videolan.org>
    00004  *
    00005  * This file is part of dtsdec, a free DTS Coherent Acoustics stream decoder.
    00006  * See http://www.videolan.org/dtsdec.html for updates.
    00007  *
    00008  * dtsdec is free software; you can redistribute it and/or modify
    00009  * it under the terms of the GNU General Public License as published by
    00010  * the Free Software Foundation; either version 2 of the License, or
    00011  * (at your option) any later version.
    00012  *
    00013  * dtsdec is distributed in the hope that it will be useful,
    00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00016  * GNU General Public License for more details.
    00017  *
    00018  * You should have received a copy of the GNU General Public License
    00019  * along with this program; if not, write to the Free Software
    00020  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00021  */
    00022
    00023 #ifndef DTS_H
    00024 #define DTS_H
    00025
    00026 #define LIBDTS_DOUBLE
    00027
    00028 # ifdef __cplusplus
    00029 extern "C" {
    00030 # endif
    00031
    00032 #if defined(LIBDTS_FIXED)
    00033 typedef int32_t sample_t;
    00034 typedef int32_t level_t;
    00035 #elif defined(LIBDTS_DOUBLE)
    00036 typedef double sample_t;
    00037 typedef double level_t;
    00038 #else
    00039 typedef float sample_t;
    00040 typedef float level_t;
    00041 #endif
    00042
    00043 typedef struct dts_state_s dts_state_t;
    00044
    00045 #define DTS_MONO 0
    00046 #define DTS_CHANNEL 1
    00047 #define DTS_STEREO 2
    00048 #define DTS_STEREO_SUMDIFF 3
    00049 #define DTS_STEREO_TOTAL 4
    00050 #define DTS_3F 5
    00051 #define DTS_2F1R 6
    00052 #define DTS_3F1R 7
    00053 #define DTS_2F2R 8
    00054 #define DTS_3F2R 9
    00055 #define DTS_4F2R 10
    00056
    00057 #define DTS_DOLBY 101 /* FIXME */
    00058
    00059 #define DTS_CHANNEL_MAX  DTS_3F2R /* We don't handle anything above that */
    00060 #define DTS_CHANNEL_BITS 6
    00061 #define DTS_CHANNEL_MASK 0x3F
    00062
    00063 #define DTS_LFE 0x80
    00064 #define DTS_ADJUST_LEVEL 0x100
    00065
    00066 dts_state_t * dts_init (uint32_t mm_accel);
    00067
    00068 int dts_syncinfo (dts_state_t *state, uint8_t * buf, int * flags,
    00069                   int * sample_rate, int * bit_rate, int *frame_length);
    00070
    00071 int dts_frame (dts_state_t * state, uint8_t * buf, int * flags,
    00072                level_t * level, sample_t bias);
    00073
    00074 void dts_dynrng (dts_state_t * state,
    00075                  level_t (* call) (level_t, void *), void * data);
    00076
    00077 int dts_blocks_num (dts_state_t * state);
    00078 int dts_block (dts_state_t * state);
    00079
    00080 sample_t * dts_samples (dts_state_t * state);
    00081
    00082 void dts_free (dts_state_t * state);
    00083
    00084 # ifdef __cplusplus
    00085 }
    00086 # endif
    00087
    00088 #endif /* DTS_H */