timidity/output.h
author Ozkan Sezer <sezeroz@gmail.com>
Sat, 13 Oct 2018 23:02:04 +0300
branchSDL-1.2
changeset 908 6b860486ce24
parent 518 8bc9b5fd2aae
child 782 e7d3a8f73e88
permissions -rw-r--r--
Mix_InitMP3: unload dll if mpg123_init() fails.
     1 /*
     2     TiMidity -- Experimental MIDI to WAVE converter
     3     Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
     4 
     5     This program is free software; you can redistribute it and/or modify
     6     it under the terms of the Perl Artistic License, available in COPYING.
     7  */
     8 
     9 /* Data format encoding bits */
    10 
    11 #define PE_MONO 	0x01  /* versus stereo */
    12 #define PE_SIGNED	0x02  /* versus unsigned */
    13 #define PE_16BIT 	0x04  /* versus 8-bit */
    14 #define PE_ULAW 	0x08  /* versus linear */
    15 #define PE_BYTESWAP	0x10  /* versus the other way */
    16 
    17 typedef struct {
    18   int32 rate, encoding;
    19   char *id_name;
    20 } PlayMode;
    21 
    22 extern PlayMode *play_mode_list[], *play_mode;
    23 extern int init_buffers(int kbytes);
    24 
    25 /* Conversion functions -- These overwrite the int32 data in *lp with
    26    data in another format */
    27 
    28 /* The size of the output buffers */
    29 extern int AUDIO_BUFFER_SIZE;
    30 
    31 /* Actual copy function */
    32 extern void (*s32tobuf)(void *dp, int32 *lp, int32 c);
    33 
    34 /* 8-bit signed and unsigned*/
    35 extern void s32tos8(void *dp, int32 *lp, int32 c);
    36 extern void s32tou8(void *dp, int32 *lp, int32 c);
    37 
    38 /* 16-bit */
    39 extern void s32tos16(void *dp, int32 *lp, int32 c);
    40 extern void s32tou16(void *dp, int32 *lp, int32 c);
    41 
    42 /* byte-exchanged 16-bit */
    43 extern void s32tos16x(void *dp, int32 *lp, int32 c);
    44 extern void s32tou16x(void *dp, int32 *lp, int32 c);
    45 
    46 /* uLaw (8 bits) */
    47 extern void s32toulaw(void *dp, int32 *lp, int32 c);
    48 
    49 /* little-endian and big-endian specific */
    50 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
    51 #define s32tou16l s32tou16
    52 #define s32tou16b s32tou16x
    53 #define s32tos16l s32tos16
    54 #define s32tos16b s32tos16x
    55 #else
    56 #define s32tou16l s32tou16x
    57 #define s32tou16b s32tou16
    58 #define s32tos16l s32tos16x
    59 #define s32tos16b s32tos16
    60 #endif