/project/jni/sdl_mixer/timidity/output.h

https://github.com/aichunyu/FFPlayer · C Header · 75 lines · 31 code · 12 blank · 32 comment · 1 complexity · 9c9e3bb1e21c22f8dde677c7f996b0cc MD5 · raw file 

    

  1. /* 
    2. 

    3. 

  3.     TiMidity -- Experimental MIDI to WAVE converter
    4. 

  4.     Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
    5. 

    6. 

  6.     This program is free software; you can redistribute it and/or modify
    7. 

  7.     it under the terms of the GNU General Public License as published by
    8. 

  8.     the Free Software Foundation; either version 2 of the License, or
    9. 

  9.     (at your option) any later version.
    10. 

    11. 

  11.     This program is distributed in the hope that it will be useful,
    12. 

  12.     but WITHOUT ANY WARRANTY; without even the implied warranty of
    13. 

  13.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14. 

  14.     GNU General Public License for more details.
    15. 

    16. 

  16.     You should have received a copy of the GNU General Public License
    17. 

  17.     along with this program; if not, write to the Free Software
    18. 

  18.     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    19. 

    20. 

  20.     output.h
    21. 

    22. 

  22. */
    23. 

  23. 

  24. /* Data format encoding bits */
    25. 

  25. 

  26. #define PE_MONO 	0x01  /* versus stereo */
    27. 

  27. #define PE_SIGNED	0x02  /* versus unsigned */
    28. 

  28. #define PE_16BIT 	0x04  /* versus 8-bit */
    29. 

  29. #define PE_ULAW 	0x08  /* versus linear */
    30. 

  30. #define PE_BYTESWAP	0x10  /* versus the other way */
    31. 

  31. 

  32. typedef struct {
    33. 

  33.   int32 rate, encoding;
    34. 

  34.   char *id_name;
    35. 

  35. } PlayMode;
    36. 

  36. 

  37. extern PlayMode *play_mode_list[], *play_mode;
    38. 

  38. extern int init_buffers(int kbytes);
    39. 

  39. 

  40. /* Conversion functions -- These overwrite the int32 data in *lp with
    41. 

  41.    data in another format */
    42. 

  42. 

  43. /* The size of the output buffers */
    44. 

  44. extern int AUDIO_BUFFER_SIZE;
    45. 

  45. 

  46. /* Actual copy function */
    47. 

  47. extern void (*s32tobuf)(void *dp, int32 *lp, int32 c);
    48. 

  48. 

  49. /* 8-bit signed and unsigned*/
    50. 

  50. extern void s32tos8(void *dp, int32 *lp, int32 c);
    51. 

  51. extern void s32tou8(void *dp, int32 *lp, int32 c);
    52. 

  52. 

  53. /* 16-bit */
    54. 

  54. extern void s32tos16(void *dp, int32 *lp, int32 c);
    55. 

  55. extern void s32tou16(void *dp, int32 *lp, int32 c);
    56. 

  56. 

  57. /* byte-exchanged 16-bit */
    58. 

  58. extern void s32tos16x(void *dp, int32 *lp, int32 c);
    59. 

  59. extern void s32tou16x(void *dp, int32 *lp, int32 c);
    60. 

  60. 

  61. /* uLaw (8 bits) */
    62. 

  62. extern void s32toulaw(void *dp, int32 *lp, int32 c);
    63. 

  63. 

  64. /* little-endian and big-endian specific */
    65. 

  65. #if SDL_BYTEORDER == SDL_LIL_ENDIAN
    66. 

  66. #define s32tou16l s32tou16
    67. 

  67. #define s32tou16b s32tou16x
    68. 

  68. #define s32tos16l s32tos16
    69. 

  69. #define s32tos16b s32tos16x
    70. 

  70. #else
    71. 

  71. #define s32tou16l s32tou16x
    72. 

  72. #define s32tou16b s32tou16
    73. 

  73. #define s32tos16l s32tos16x
    74. 

  74. #define s32tos16b s32tos16
    75. 

  75. #endif
    76.