/project/jni/sndfile/src/alaw.c

https://github.com/aichunyu/FFPlayer · C · 540 lines · 453 code · 63 blank · 24 comment · 47 complexity · 8bf929ae234900b2ee75998ed23bf499 MD5 · raw file 

    

  1. /*
    2. 

  2. ** Copyright (C) 1999-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
    3. 

  3. **
    4. 

  4. ** This program is free software; you can redistribute it and/or modify
    5. 

  5. ** it under the terms of the GNU Lesser General Public License as published by
    6. 

  6. ** the Free Software Foundation; either version 2.1 of the License, or
    7. 

  7. ** (at your option) any later version.
    8. 

  8. **
    9. 

  9. ** This program is distributed in the hope that it will be useful,
    10. 

  10. ** but WITHOUT ANY WARRANTY; without even the implied warranty of
    11. 

  11. ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12. 

  12. ** GNU Lesser General Public License for more details.
    13. 

  13. **
    14. 

  14. ** You should have received a copy of the GNU Lesser General Public License
    15. 

  15. ** along with this program; if not, write to the Free Software
    16. 

  16. ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
    17. 

  17. */
    18. 

  18. 

  19. #include	"sfconfig.h"
    20. 

  20. 

  21. #include	<math.h>
    22. 

  22. 

  23. #include	"sndfile.h"
    24. 

  24. #include	"common.h"
    25. 

  25. 

  26. static sf_count_t alaw_read_alaw2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
    27. 

  27. static sf_count_t alaw_read_alaw2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
    28. 

  28. static sf_count_t alaw_read_alaw2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
    29. 

  29. static sf_count_t alaw_read_alaw2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
    30. 

  30. 

  31. static sf_count_t alaw_write_s2alaw (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ;
    32. 

  32. static sf_count_t alaw_write_i2alaw (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ;
    33. 

  33. static sf_count_t alaw_write_f2alaw (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ;
    34. 

  34. static sf_count_t alaw_write_d2alaw (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ;
    35. 

  35. 

  36. static void alaw2s_array (unsigned char *buffer, int count, short *ptr) ;
    37. 

  37. static void alaw2i_array (unsigned char *buffer, int count, int *ptr) ;
    38. 

  38. static void alaw2f_array (unsigned char *buffer, int count, float *ptr, float normfact) ;
    39. 

  39. static void alaw2d_array (unsigned char *buffer, int count, double *ptr, double normfact) ;
    40. 

  40. 

  41. static void s2alaw_array (const short *buffer, int count, unsigned char *ptr) ;
    42. 

  42. static void i2alaw_array (const int *buffer, int count, unsigned char *ptr) ;
    43. 

  43. static void f2alaw_array (const float *buffer, int count, unsigned char *ptr, float normfact) ;
    44. 

  44. static void d2alaw_array (const double *buffer, int count, unsigned char *ptr, double normfact) ;
    45. 

  45. 

  46. 

  47. int
    48. 

  48. alaw_init (SF_PRIVATE *psf)
    49. 

  49. {
    50. 

  50. 	if (psf->file.mode == SFM_READ || psf->file.mode == SFM_RDWR)
    51. 

  51. 	{	psf->read_short		= alaw_read_alaw2s ;
    52. 

  52. 		psf->read_int		= alaw_read_alaw2i ;
    53. 

  53. 		psf->read_float		= alaw_read_alaw2f ;
    54. 

  54. 		psf->read_double	= alaw_read_alaw2d ;
    55. 

  55. 		} ;
    56. 

  56. 

  57. 	if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
    58. 

  58. 	{	psf->write_short	= alaw_write_s2alaw ;
    59. 

  59. 		psf->write_int		= alaw_write_i2alaw ;
    60. 

  60. 		psf->write_float	= alaw_write_f2alaw ;
    61. 

  61. 		psf->write_double	= alaw_write_d2alaw ;
    62. 

  62. 		} ;
    63. 

  63. 

  64. 	psf->bytewidth = 1 ;
    65. 

  65. 	psf->blockwidth = psf->sf.channels ;
    66. 

  66. 

  67. 	if (psf->filelength > psf->dataoffset)
    68. 

  68. 		psf->datalength = (psf->dataend) ? psf->dataend - psf->dataoffset : psf->filelength - psf->dataoffset ;
    69. 

  69. 	else
    70. 

  70. 		psf->datalength = 0 ;
    71. 

  71. 

  72. 	psf->sf.frames = psf->blockwidth > 0 ? psf->datalength / psf->blockwidth : 0 ;
    73. 

  73. 

  74. 	return 0 ;
    75. 

  75. } /* alaw_init */
    76. 

  76. 

  77. /*==============================================================================
    78. 

  78.  *	Private static functions and data.
    79. 

  79.  */
    80. 

  80. 

  81. static
    82. 

  82. short alaw_decode [256] =
    83. 

  83. {	-5504,	-5248,	-6016,	-5760,	-4480,	-4224,	-4992,	-4736,
    84. 

  84. 	-7552,	-7296,	-8064,	-7808,	-6528,	-6272,	-7040,	-6784,
    85. 

  85. 	-2752,	-2624,	-3008,	-2880,	-2240,	-2112,	-2496,	-2368,
    86. 

  86. 	-3776,	-3648,	-4032,	-3904,	-3264,	-3136,	-3520,	-3392,
    87. 

  87. 	-22016,	-20992,	-24064,	-23040,	-17920,	-16896,	-19968,	-18944,
    88. 

  88. 	-30208,	-29184,	-32256,	-31232,	-26112,	-25088,	-28160,	-27136,
    89. 

  89. 	-11008,	-10496,	-12032,	-11520,	-8960,	-8448,	-9984,	-9472,
    90. 

  90. 	-15104,	-14592,	-16128,	-15616,	-13056,	-12544,	-14080,	-13568,
    91. 

  91. 	-344,	-328,	-376,	-360,	-280,	-264,	-312,	-296,
    92. 

  92. 	-472,	-456,	-504,	-488,	-408,	-392,	-440,	-424,
    93. 

  93. 	-88,	-72,	-120,	-104,	-24,	-8,		-56,	-40,
    94. 

  94. 	-216,	-200,	-248,	-232,	-152,	-136,	-184,	-168,
    95. 

  95. 	-1376,	-1312,	-1504,	-1440,	-1120,	-1056,	-1248,	-1184,
    96. 

  96. 	-1888,	-1824,	-2016,	-1952,	-1632,	-1568,	-1760,	-1696,
    97. 

  97. 	-688,	-656,	-752,	-720,	-560,	-528,	-624,	-592,
    98. 

  98. 	-944,	-912,	-1008,	-976,	-816,	-784,	-880,	-848,
    99. 

  99. 	5504,	5248,	6016,	5760,	4480,	4224,	4992,	4736,
    100. 

  100. 	7552,	7296,	8064,	7808,	6528,	6272,	7040,	6784,
    101. 

  101. 	2752,	2624,	3008,	2880,	2240,	2112,	2496,	2368,
    102. 

  102. 	3776,	3648,	4032,	3904,	3264,	3136,	3520,	3392,
    103. 

  103. 	22016,	20992,	24064,	23040,	17920,	16896,	19968,	18944,
    104. 

  104. 	30208,	29184,	32256,	31232,	26112,	25088,	28160,	27136,
    105. 

  105. 	11008,	10496,	12032,	11520,	8960,	8448,	9984,	9472,
    106. 

  106. 	15104,	14592,	16128,	15616,	13056,	12544,	14080,	13568,
    107. 

  107. 	344,	328,	376,	360,	280,	264,	312,	296,
    108. 

  108. 	472,	456,	504,	488,	408,	392,	440,	424,
    109. 

  109. 	88,		72,		120,	104,	24,		8,		56,		40,
    110. 

  110. 	216,	200,	248,	232,	152,	136,	184,	168,
    111. 

  111. 	1376,	1312,	1504,	1440,	1120,	1056,	1248,	1184,
    112. 

  112. 	1888,	1824,	2016,	1952,	1632,	1568,	1760,	1696,
    113. 

  113. 	688,	656,	752,	720,	560,	528,	624,	592,
    114. 

  114. 	944,	912,	1008,	976,	816,	784,	880,	848
    115. 

  115. } ; /* alaw_decode */
    116. 

  116. 

  117. static
    118. 

  118. unsigned char alaw_encode [2048 + 1] =
    119. 

  119. {	0xd5, 0xd4, 0xd7, 0xd6, 0xd1, 0xd0, 0xd3, 0xd2, 0xdd, 0xdc, 0xdf, 0xde,
    120. 

  120. 	0xd9, 0xd8, 0xdb, 0xda, 0xc5, 0xc4, 0xc7, 0xc6, 0xc1, 0xc0, 0xc3, 0xc2,
    121. 

  121. 	0xcd, 0xcc, 0xcf, 0xce, 0xc9, 0xc8, 0xcb, 0xca, 0xf5, 0xf5, 0xf4, 0xf4,
    122. 

  122. 	0xf7, 0xf7, 0xf6, 0xf6, 0xf1, 0xf1, 0xf0, 0xf0, 0xf3, 0xf3, 0xf2, 0xf2,
    123. 

  123. 	0xfd, 0xfd, 0xfc, 0xfc, 0xff, 0xff, 0xfe, 0xfe, 0xf9, 0xf9, 0xf8, 0xf8,
    124. 

  124. 	0xfb, 0xfb, 0xfa, 0xfa, 0xe5, 0xe5, 0xe5, 0xe5, 0xe4, 0xe4, 0xe4, 0xe4,
    125. 

  125. 	0xe7, 0xe7, 0xe7, 0xe7, 0xe6, 0xe6, 0xe6, 0xe6, 0xe1, 0xe1, 0xe1, 0xe1,
    126. 

  126. 	0xe0, 0xe0, 0xe0, 0xe0, 0xe3, 0xe3, 0xe3, 0xe3, 0xe2, 0xe2, 0xe2, 0xe2,
    127. 

  127. 	0xed, 0xed, 0xed, 0xed, 0xec, 0xec, 0xec, 0xec, 0xef, 0xef, 0xef, 0xef,
    128. 

  128. 	0xee, 0xee, 0xee, 0xee, 0xe9, 0xe9, 0xe9, 0xe9, 0xe8, 0xe8, 0xe8, 0xe8,
    129. 

  129. 	0xeb, 0xeb, 0xeb, 0xeb, 0xea, 0xea, 0xea, 0xea, 0x95, 0x95, 0x95, 0x95,
    130. 

  130. 	0x95, 0x95, 0x95, 0x95, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94,
    131. 

  131. 	0x97, 0x97, 0x97, 0x97, 0x97, 0x97, 0x97, 0x97, 0x96, 0x96, 0x96, 0x96,
    132. 

  132. 	0x96, 0x96, 0x96, 0x96, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
    133. 

  133. 	0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x93, 0x93, 0x93, 0x93,
    134. 

  134. 	0x93, 0x93, 0x93, 0x93, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92,
    135. 

  135. 	0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9c, 0x9c, 0x9c, 0x9c,
    136. 

  136. 	0x9c, 0x9c, 0x9c, 0x9c, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f,
    137. 

  137. 	0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x99, 0x99, 0x99, 0x99,
    138. 

  138. 	0x99, 0x99, 0x99, 0x99, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98,
    139. 

  139. 	0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9a, 0x9a, 0x9a, 0x9a,
    140. 

  140. 	0x9a, 0x9a, 0x9a, 0x9a, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85,
    141. 

  141. 	0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x84, 0x84, 0x84, 0x84,
    142. 

  142. 	0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84,
    143. 

  143. 	0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87,
    144. 

  144. 	0x87, 0x87, 0x87, 0x87, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86,
    145. 

  145. 	0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x81, 0x81, 0x81, 0x81,
    146. 

  146. 	0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
    147. 

  147. 	0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
    148. 

  148. 	0x80, 0x80, 0x80, 0x80, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83,
    149. 

  149. 	0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x82, 0x82, 0x82, 0x82,
    150. 

  150. 	0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82,
    151. 

  151. 	0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d,
    152. 

  152. 	0x8d, 0x8d, 0x8d, 0x8d, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c,
    153. 

  153. 	0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8f, 0x8f, 0x8f, 0x8f,
    154. 

  154. 	0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f,
    155. 

  155. 	0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e,
    156. 

  156. 	0x8e, 0x8e, 0x8e, 0x8e, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89,
    157. 

  157. 	0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x88, 0x88, 0x88, 0x88,
    158. 

  158. 	0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
    159. 

  159. 	0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b,
    160. 

  160. 	0x8b, 0x8b, 0x8b, 0x8b, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a,
    161. 

  161. 	0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0xb5, 0xb5, 0xb5, 0xb5,
    162. 

  162. 	0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5,
    163. 

  163. 	0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5,
    164. 

  164. 	0xb5, 0xb5, 0xb5, 0xb5, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4,
    165. 

  165. 	0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4,
    166. 

  166. 	0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4,
    167. 

  167. 	0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7,
    168. 

  168. 	0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7,
    169. 

  169. 	0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb6, 0xb6, 0xb6, 0xb6,
    170. 

  170. 	0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6,
    171. 

  171. 	0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6,
    172. 

  172. 	0xb6, 0xb6, 0xb6, 0xb6, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1,
    173. 

  173. 	0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1,
    174. 

  174. 	0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1,
    175. 

  175. 	0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0,
    176. 

  176. 	0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0,
    177. 

  177. 	0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb3, 0xb3, 0xb3, 0xb3,
    178. 

  178. 	0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3,
    179. 

  179. 	0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3,
    180. 

  180. 	0xb3, 0xb3, 0xb3, 0xb3, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2,
    181. 

  181. 	0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2,
    182. 

  182. 	0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2,
    183. 

  183. 	0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd,
    184. 

  184. 	0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd,
    185. 

  185. 	0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbc, 0xbc, 0xbc, 0xbc,
    186. 

  186. 	0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc,
    187. 

  187. 	0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc,
    188. 

  188. 	0xbc, 0xbc, 0xbc, 0xbc, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf,
    189. 

  189. 	0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf,
    190. 

  190. 	0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf,
    191. 

  191. 	0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe,
    192. 

  192. 	0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe,
    193. 

  193. 	0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xb9, 0xb9, 0xb9, 0xb9,
    194. 

  194. 	0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9,
    195. 

  195. 	0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9,
    196. 

  196. 	0xb9, 0xb9, 0xb9, 0xb9, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8,
    197. 

  197. 	0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8,
    198. 

  198. 	0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8,
    199. 

  199. 	0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb,
    200. 

  200. 	0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb,
    201. 

  201. 	0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xba, 0xba, 0xba, 0xba,
    202. 

  202. 	0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba,
    203. 

  203. 	0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba,
    204. 

  204. 	0xba, 0xba, 0xba, 0xba, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
    205. 

  205. 	0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
    206. 

  206. 	0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
    207. 

  207. 	0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
    208. 

  208. 	0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
    209. 

  209. 	0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa4, 0xa4, 0xa4, 0xa4,
    210. 

  210. 	0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4,
    211. 

  211. 	0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4,
    212. 

  212. 	0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4,
    213. 

  213. 	0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4,
    214. 

  214. 	0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4,
    215. 

  215. 	0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7,
    216. 

  216. 	0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7,
    217. 

  217. 	0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7,
    218. 

  218. 	0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7,
    219. 

  219. 	0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7,
    220. 

  220. 	0xa7, 0xa7, 0xa7, 0xa7, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
    221. 

  221. 	0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
    222. 

  222. 	0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
    223. 

  223. 	0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
    224. 

  224. 	0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
    225. 

  225. 	0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa1, 0xa1, 0xa1, 0xa1,
    226. 

  226. 	0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1,
    227. 

  227. 	0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1,
    228. 

  228. 	0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1,
    229. 

  229. 	0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1,
    230. 

  230. 	0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1,
    231. 

  231. 	0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0,
    232. 

  232. 	0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0,
    233. 

  233. 	0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0,
    234. 

  234. 	0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0,
    235. 

  235. 	0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0,
    236. 

  236. 	0xa0, 0xa0, 0xa0, 0xa0, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3,
    237. 

  237. 	0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3,
    238. 

  238. 	0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3,
    239. 

  239. 	0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3,
    240. 

  240. 	0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3,
    241. 

  241. 	0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa2, 0xa2, 0xa2, 0xa2,
    242. 

  242. 	0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2,
    243. 

  243. 	0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2,
    244. 

  244. 	0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2,
    245. 

  245. 	0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2,
    246. 

  246. 	0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2,
    247. 

  247. 	0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad,
    248. 

  248. 	0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad,
    249. 

  249. 	0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad,
    250. 

  250. 	0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad,
    251. 

  251. 	0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad,
    252. 

  252. 	0xad, 0xad, 0xad, 0xad, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac,
    253. 

  253. 	0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac,
    254. 

  254. 	0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac,
    255. 

  255. 	0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac,
    256. 

  256. 	0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac,
    257. 

  257. 	0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xaf, 0xaf, 0xaf, 0xaf,
    258. 

  258. 	0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf,
    259. 

  259. 	0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf,
    260. 

  260. 	0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf,
    261. 

  261. 	0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf,
    262. 

  262. 	0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf,
    263. 

  263. 	0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae,
    264. 

  264. 	0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae,
    265. 

  265. 	0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae,
    266. 

  266. 	0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae,
    267. 

  267. 	0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae,
    268. 

  268. 	0xae, 0xae, 0xae, 0xae, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9,
    269. 

  269. 	0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9,
    270. 

  270. 	0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9,
    271. 

  271. 	0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9,
    272. 

  272. 	0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9,
    273. 

  273. 	0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa8, 0xa8, 0xa8, 0xa8,
    274. 

  274. 	0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8,
    275. 

  275. 	0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8,
    276. 

  276. 	0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8,
    277. 

  277. 	0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8,
    278. 

  278. 	0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8,
    279. 

  279. 	0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab,
    280. 

  280. 	0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab,
    281. 

  281. 	0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab,
    282. 

  282. 	0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab,
    283. 

  283. 	0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab,
    284. 

  284. 	0xab, 0xab, 0xab, 0xab, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
    285. 

  285. 	0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
    286. 

  286. 	0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
    287. 

  287. 	0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
    288. 

  288. 	0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
    289. 

  289. 	0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0x2a
    290. 

  290. } ; /* alaw_encode */
    291. 

  291. 

  292. static inline void
    293. 

  293. alaw2s_array (unsigned char *buffer, int count, short *ptr)
    294. 

  294. {	while (--count >= 0)
    295. 

  295. 		ptr [count] = alaw_decode [(int) buffer [count]] ;
    296. 

  296. } /* alaw2s_array */
    297. 

  297. 

  298. static inline void
    299. 

  299. alaw2i_array (unsigned char *buffer, int count, int *ptr)
    300. 

  300. {	while (--count >= 0)
    301. 

  301. 		ptr [count] = alaw_decode [(int) buffer [count]] << 16 ;
    302. 

  302. } /* alaw2i_array */
    303. 

  303. 

  304. static inline void
    305. 

  305. alaw2f_array (unsigned char *buffer, int count, float *ptr, float normfact)
    306. 

  306. {	while (--count >= 0)
    307. 

  307. 		ptr [count] = normfact * alaw_decode [(int) buffer [count]] ;
    308. 

  308. } /* alaw2f_array */
    309. 

  309. 

  310. static inline void
    311. 

  311. alaw2d_array (unsigned char *buffer, int count, double *ptr, double normfact)
    312. 

  312. {	while (--count >= 0)
    313. 

  313. 		ptr [count] = normfact * alaw_decode [(int) buffer [count]] ;
    314. 

  314. } /* alaw2d_array */
    315. 

  315. 

  316. static inline void
    317. 

  317. s2alaw_array (const short *ptr, int count, unsigned char *buffer)
    318. 

  318. {	while (--count >= 0)
    319. 

  319. 	{	if (ptr [count] >= 0)
    320. 

  320. 			buffer [count] = alaw_encode [ptr [count] / 16] ;
    321. 

  321. 		else
    322. 

  322. 			buffer [count] = 0x7F & alaw_encode [ptr [count] / -16] ;
    323. 

  323. 		} ;
    324. 

  324. } /* s2alaw_array */
    325. 

  325. 

  326. static inline void
    327. 

  327. i2alaw_array (const int *ptr, int count, unsigned char *buffer)
    328. 

  328. {	while (--count >= 0)
    329. 

  329. 	{	if (ptr [count] >= 0)
    330. 

  330. 			buffer [count] = alaw_encode [ptr [count] >> (16 + 4)] ;
    331. 

  331. 		else
    332. 

  332. 			buffer [count] = 0x7F & alaw_encode [- ptr [count] >> (16 + 4)] ;
    333. 

  333. 		} ;
    334. 

  334. } /* i2alaw_array */
    335. 

  335. 

  336. static inline void
    337. 

  337. f2alaw_array (const float *ptr, int count, unsigned char *buffer, float normfact)
    338. 

  338. {	while (--count >= 0)
    339. 

  339. 	{	if (ptr [count] >= 0)
    340. 

  340. 			buffer [count] = alaw_encode [lrintf (normfact * ptr [count])] ;
    341. 

  341. 		else
    342. 

  342. 			buffer [count] = 0x7F & alaw_encode [- lrintf (normfact * ptr [count])] ;
    343. 

  343. 		} ;
    344. 

  344. } /* f2alaw_array */
    345. 

  345. 

  346. static inline void
    347. 

  347. d2alaw_array (const double *ptr, int count, unsigned char *buffer, double normfact)
    348. 

  348. {	while (--count >= 0)
    349. 

  349. 	{	if (ptr [count] >= 0)
    350. 

  350. 			buffer [count] = alaw_encode [lrint (normfact * ptr [count])] ;
    351. 

  351. 		else
    352. 

  352. 			buffer [count] = 0x7F & alaw_encode [- lrint (normfact * ptr [count])] ;
    353. 

  353. 		} ;
    354. 

  354. } /* d2alaw_array */
    355. 

  355. 

  356. /*==============================================================================
    357. 

  357. */
    358. 

  358. 

  359. static sf_count_t
    360. 

  360. alaw_read_alaw2s (SF_PRIVATE *psf, short *ptr, sf_count_t len)
    361. 

  361. {	int			bufferlen, readcount ;
    362. 

  362. 	sf_count_t	total = 0 ;
    363. 

  363. 

  364. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    365. 

  365. 

  366. 	while (len > 0)
    367. 

  367. 	{	if (len < bufferlen)
    368. 

  368. 			bufferlen = (int) len ;
    369. 

  369. 		readcount = psf_fread (psf->u.ucbuf, 1, bufferlen, psf) ;
    370. 

  370. 		alaw2s_array (psf->u.ucbuf, readcount, ptr + total) ;
    371. 

  371. 		total += readcount ;
    372. 

  372. 		if (readcount < bufferlen)
    373. 

  373. 			break ;
    374. 

  374. 		len -= readcount ;
    375. 

  375. 		} ;
    376. 

  376. 

  377. 	return total ;
    378. 

  378. } /* alaw_read_alaw2s */
    379. 

  379. 

  380. static sf_count_t
    381. 

  381. alaw_read_alaw2i (SF_PRIVATE *psf, int *ptr, sf_count_t len)
    382. 

  382. {	int			bufferlen, readcount ;
    383. 

  383. 	sf_count_t	total = 0 ;
    384. 

  384. 

  385. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    386. 

  386. 

  387. 	while (len > 0)
    388. 

  388. 	{	if (len < bufferlen)
    389. 

  389. 			bufferlen = (int) len ;
    390. 

  390. 		readcount = psf_fread (psf->u.ucbuf, 1, bufferlen, psf) ;
    391. 

  391. 		alaw2i_array (psf->u.ucbuf, readcount, ptr + total) ;
    392. 

  392. 		total += readcount ;
    393. 

  393. 		if (readcount < bufferlen)
    394. 

  394. 			break ;
    395. 

  395. 		len -= readcount ;
    396. 

  396. 		} ;
    397. 

  397. 

  398. 	return total ;
    399. 

  399. } /* alaw_read_alaw2i */
    400. 

  400. 

  401. static sf_count_t
    402. 

  402. alaw_read_alaw2f (SF_PRIVATE *psf, float *ptr, sf_count_t len)
    403. 

  403. {	int			bufferlen, readcount ;
    404. 

  404. 	sf_count_t	total = 0 ;
    405. 

  405. 	float	normfact ;
    406. 

  406. 

  407. 	normfact = (psf->norm_float == SF_TRUE) ? 1.0 / ((float) 0x8000) : 1.0 ;
    408. 

  408. 

  409. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    410. 

  410. 

  411. 	while (len > 0)
    412. 

  412. 	{	if (len < bufferlen)
    413. 

  413. 			bufferlen = (int) len ;
    414. 

  414. 		readcount = psf_fread (psf->u.ucbuf, 1, bufferlen, psf) ;
    415. 

  415. 		alaw2f_array (psf->u.ucbuf, readcount, ptr + total, normfact) ;
    416. 

  416. 		total += readcount ;
    417. 

  417. 		if (readcount < bufferlen)
    418. 

  418. 			break ;
    419. 

  419. 		len -= readcount ;
    420. 

  420. 		} ;
    421. 

  421. 

  422. 	return total ;
    423. 

  423. } /* alaw_read_alaw2f */
    424. 

  424. 

  425. static sf_count_t
    426. 

  426. alaw_read_alaw2d (SF_PRIVATE *psf, double *ptr, sf_count_t len)
    427. 

  427. {	int			bufferlen, readcount ;
    428. 

  428. 	sf_count_t	total = 0 ;
    429. 

  429. 	double	normfact ;
    430. 

  430. 

  431. 	normfact = (psf->norm_double) ? 1.0 / ((double) 0x8000) : 1.0 ;
    432. 

  432. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    433. 

  433. 

  434. 	while (len > 0)
    435. 

  435. 	{	if (len < bufferlen)
    436. 

  436. 			bufferlen = (int) len ;
    437. 

  437. 		readcount = psf_fread (psf->u.ucbuf, 1, bufferlen, psf) ;
    438. 

  438. 		alaw2d_array (psf->u.ucbuf, readcount, ptr + total, normfact) ;
    439. 

  439. 		total += readcount ;
    440. 

  440. 		if (readcount < bufferlen)
    441. 

  441. 			break ;
    442. 

  442. 		len -= readcount ;
    443. 

  443. 		} ;
    444. 

  444. 

  445. 	return total ;
    446. 

  446. } /* alaw_read_alaw2d */
    447. 

  447. 

  448. /*=============================================================================================
    449. 

  449. */
    450. 

  450. 

  451. static sf_count_t
    452. 

  452. alaw_write_s2alaw	(SF_PRIVATE *psf, const short *ptr, sf_count_t len)
    453. 

  453. {	int			bufferlen, writecount ;
    454. 

  454. 	sf_count_t	total = 0 ;
    455. 

  455. 

  456. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    457. 

  457. 

  458. 	while (len > 0)
    459. 

  459. 	{	if (len < bufferlen)
    460. 

  460. 			bufferlen = (int) len ;
    461. 

  461. 		s2alaw_array (ptr + total, bufferlen, psf->u.ucbuf) ;
    462. 

  462. 		writecount = psf_fwrite (psf->u.ucbuf, 1, bufferlen, psf) ;
    463. 

  463. 		total += writecount ;
    464. 

  464. 		if (writecount < bufferlen)
    465. 

  465. 			break ;
    466. 

  466. 		len -= writecount ;
    467. 

  467. 		} ;
    468. 

  468. 

  469. 	return total ;
    470. 

  470. } /* alaw_write_s2alaw */
    471. 

  471. 

  472. static sf_count_t
    473. 

  473. alaw_write_i2alaw	(SF_PRIVATE *psf, const int *ptr, sf_count_t len)
    474. 

  474. {	int			bufferlen, writecount ;
    475. 

  475. 	sf_count_t	total = 0 ;
    476. 

  476. 

  477. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    478. 

  478. 

  479. 	while (len > 0)
    480. 

  480. 	{	if (len < bufferlen)
    481. 

  481. 			bufferlen = (int) len ;
    482. 

  482. 		i2alaw_array (ptr + total, bufferlen, psf->u.ucbuf) ;
    483. 

  483. 		writecount = psf_fwrite (psf->u.ucbuf, 1, bufferlen, psf) ;
    484. 

  484. 		total += writecount ;
    485. 

  485. 		if (writecount < bufferlen)
    486. 

  486. 			break ;
    487. 

  487. 		len -= writecount ;
    488. 

  488. 		} ;
    489. 

  489. 

  490. 	return total ;
    491. 

  491. } /* alaw_write_i2alaw */
    492. 

  492. 

  493. static sf_count_t
    494. 

  494. alaw_write_f2alaw	(SF_PRIVATE *psf, const float *ptr, sf_count_t len)
    495. 

  495. {	int			bufferlen, writecount ;
    496. 

  496. 	sf_count_t	total = 0 ;
    497. 

  497. 	float	normfact ;
    498. 

  498. 

  499. 	normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7FFF) / 16.0 : 1.0 / 16 ;
    500. 

  500. 

  501. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    502. 

  502. 

  503. 	while (len > 0)
    504. 

  504. 	{	if (len < bufferlen)
    505. 

  505. 			bufferlen = (int) len ;
    506. 

  506. 		f2alaw_array (ptr + total, bufferlen, psf->u.ucbuf, normfact) ;
    507. 

  507. 		writecount = psf_fwrite (psf->u.ucbuf, 1, bufferlen, psf) ;
    508. 

  508. 		total += writecount ;
    509. 

  509. 		if (writecount < bufferlen)
    510. 

  510. 			break ;
    511. 

  511. 		len -= writecount ;
    512. 

  512. 		} ;
    513. 

  513. 

  514. 	return total ;
    515. 

  515. } /* alaw_write_f2alaw */
    516. 

  516. 

  517. static sf_count_t
    518. 

  518. alaw_write_d2alaw	(SF_PRIVATE *psf, const double *ptr, sf_count_t len)
    519. 

  519. {	int			bufferlen, writecount ;
    520. 

  520. 	sf_count_t	total = 0 ;
    521. 

  521. 	double	normfact ;
    522. 

  522. 

  523. 	normfact = (psf->norm_double) ? (1.0 * 0x7FFF) / 16.0 : 1.0 / 16.0 ;
    524. 

  524. 

  525. 	bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
    526. 

  526. 

  527. 	while (len > 0)
    528. 

  528. 	{	if (len < bufferlen)
    529. 

  529. 			bufferlen = (int) len ;
    530. 

  530. 		d2alaw_array (ptr + total, bufferlen, psf->u.ucbuf, normfact) ;
    531. 

  531. 		writecount = psf_fwrite (psf->u.ucbuf, 1, bufferlen, psf) ;
    532. 

  532. 		total += writecount ;
    533. 

  533. 		if (writecount < bufferlen)
    534. 

  534. 			break ;
    535. 

  535. 		len -= writecount ;
    536. 

  536. 		} ;
    537. 

  537. 

  538. 	return total ;
    539. 

  539. } /* alaw_write_d2alaw */
    540.