544 lines
18 KiB
C
544 lines
18 KiB
C
/*
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* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <dev/sound/pcm/sound.h>
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#include "feeder_if.h"
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SND_DECLARE_FILE("$FreeBSD$");
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MALLOC_DEFINE(M_FMTFEEDER, "fmtfeed", "pcm format feeder");
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#define FEEDBUFSZ 8192
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static unsigned char ulaw_to_u8[] = {
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3, 7, 11, 15, 19, 23, 27, 31,
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35, 39, 43, 47, 51, 55, 59, 63,
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66, 68, 70, 72, 74, 76, 78, 80,
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82, 84, 86, 88, 90, 92, 94, 96,
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98, 99, 100, 101, 102, 103, 104, 105,
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106, 107, 108, 109, 110, 111, 112, 113,
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113, 114, 114, 115, 115, 116, 116, 117,
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117, 118, 118, 119, 119, 120, 120, 121,
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121, 121, 122, 122, 122, 122, 123, 123,
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123, 123, 124, 124, 124, 124, 125, 125,
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125, 125, 125, 125, 126, 126, 126, 126,
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126, 126, 126, 126, 127, 127, 127, 127,
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127, 127, 127, 127, 127, 127, 127, 127,
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128, 128, 128, 128, 128, 128, 128, 128,
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128, 128, 128, 128, 128, 128, 128, 128,
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128, 128, 128, 128, 128, 128, 128, 128,
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253, 249, 245, 241, 237, 233, 229, 225,
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221, 217, 213, 209, 205, 201, 197, 193,
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190, 188, 186, 184, 182, 180, 178, 176,
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174, 172, 170, 168, 166, 164, 162, 160,
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158, 157, 156, 155, 154, 153, 152, 151,
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150, 149, 148, 147, 146, 145, 144, 143,
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143, 142, 142, 141, 141, 140, 140, 139,
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139, 138, 138, 137, 137, 136, 136, 135,
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135, 135, 134, 134, 134, 134, 133, 133,
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133, 133, 132, 132, 132, 132, 131, 131,
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131, 131, 131, 131, 130, 130, 130, 130,
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130, 130, 130, 130, 129, 129, 129, 129,
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129, 129, 129, 129, 129, 129, 129, 129,
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128, 128, 128, 128, 128, 128, 128, 128,
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128, 128, 128, 128, 128, 128, 128, 128,
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128, 128, 128, 128, 128, 128, 128, 128,
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};
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static unsigned char u8_to_ulaw[] = {
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0, 0, 0, 0, 0, 1, 1, 1,
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1, 2, 2, 2, 2, 3, 3, 3,
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3, 4, 4, 4, 4, 5, 5, 5,
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5, 6, 6, 6, 6, 7, 7, 7,
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7, 8, 8, 8, 8, 9, 9, 9,
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9, 10, 10, 10, 10, 11, 11, 11,
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11, 12, 12, 12, 12, 13, 13, 13,
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13, 14, 14, 14, 14, 15, 15, 15,
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15, 16, 16, 17, 17, 18, 18, 19,
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19, 20, 20, 21, 21, 22, 22, 23,
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23, 24, 24, 25, 25, 26, 26, 27,
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27, 28, 28, 29, 29, 30, 30, 31,
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31, 32, 33, 34, 35, 36, 37, 38,
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39, 40, 41, 42, 43, 44, 45, 46,
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47, 49, 51, 53, 55, 57, 59, 61,
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63, 66, 70, 74, 78, 84, 92, 104,
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254, 231, 219, 211, 205, 201, 197, 193,
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190, 188, 186, 184, 182, 180, 178, 176,
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175, 174, 173, 172, 171, 170, 169, 168,
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167, 166, 165, 164, 163, 162, 161, 160,
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159, 159, 158, 158, 157, 157, 156, 156,
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155, 155, 154, 154, 153, 153, 152, 152,
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151, 151, 150, 150, 149, 149, 148, 148,
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147, 147, 146, 146, 145, 145, 144, 144,
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143, 143, 143, 143, 142, 142, 142, 142,
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141, 141, 141, 141, 140, 140, 140, 140,
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139, 139, 139, 139, 138, 138, 138, 138,
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137, 137, 137, 137, 136, 136, 136, 136,
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135, 135, 135, 135, 134, 134, 134, 134,
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133, 133, 133, 133, 132, 132, 132, 132,
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131, 131, 131, 131, 130, 130, 130, 130,
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129, 129, 129, 129, 128, 128, 128, 128,
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};
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static unsigned char alaw_to_ulaw[] = {
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42, 43, 40, 41, 46, 47, 44, 45,
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34, 35, 32, 33, 38, 39, 36, 37,
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57, 58, 55, 56, 61, 62, 59, 60,
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49, 50, 48, 48, 53, 54, 51, 52,
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10, 11, 8, 9, 14, 15, 12, 13,
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2, 3, 0, 1, 6, 7, 4, 5,
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26, 27, 24, 25, 30, 31, 28, 29,
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18, 19, 16, 17, 22, 23, 20, 21,
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98, 99, 96, 97, 102, 103, 100, 101,
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93, 93, 92, 92, 95, 95, 94, 94,
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116, 118, 112, 114, 124, 126, 120, 122,
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106, 107, 104, 105, 110, 111, 108, 109,
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72, 73, 70, 71, 76, 77, 74, 75,
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64, 65, 63, 63, 68, 69, 66, 67,
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86, 87, 84, 85, 90, 91, 88, 89,
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79, 79, 78, 78, 82, 83, 80, 81,
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170, 171, 168, 169, 174, 175, 172, 173,
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162, 163, 160, 161, 166, 167, 164, 165,
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185, 186, 183, 184, 189, 190, 187, 188,
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177, 178, 176, 176, 181, 182, 179, 180,
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138, 139, 136, 137, 142, 143, 140, 141,
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130, 131, 128, 129, 134, 135, 132, 133,
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154, 155, 152, 153, 158, 159, 156, 157,
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146, 147, 144, 145, 150, 151, 148, 149,
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226, 227, 224, 225, 230, 231, 228, 229,
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221, 221, 220, 220, 223, 223, 222, 222,
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244, 246, 240, 242, 252, 254, 248, 250,
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234, 235, 232, 233, 238, 239, 236, 237,
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200, 201, 198, 199, 204, 205, 202, 203,
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192, 193, 191, 191, 196, 197, 194, 195,
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214, 215, 212, 213, 218, 219, 216, 217,
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207, 207, 206, 206, 210, 211, 208, 209,
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};
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static unsigned char ulaw_to_alaw[] = {
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42, 43, 40, 41, 46, 47, 44, 45,
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34, 35, 32, 33, 38, 39, 36, 37,
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58, 59, 56, 57, 62, 63, 60, 61,
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50, 51, 48, 49, 54, 55, 52, 53,
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10, 11, 8, 9, 14, 15, 12, 13,
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2, 3, 0, 1, 6, 7, 4, 5,
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27, 24, 25, 30, 31, 28, 29, 18,
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19, 16, 17, 22, 23, 20, 21, 106,
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104, 105, 110, 111, 108, 109, 98, 99,
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96, 97, 102, 103, 100, 101, 122, 120,
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126, 127, 124, 125, 114, 115, 112, 113,
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118, 119, 116, 117, 75, 73, 79, 77,
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66, 67, 64, 65, 70, 71, 68, 69,
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90, 91, 88, 89, 94, 95, 92, 93,
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82, 82, 83, 83, 80, 80, 81, 81,
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86, 86, 87, 87, 84, 84, 85, 85,
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170, 171, 168, 169, 174, 175, 172, 173,
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162, 163, 160, 161, 166, 167, 164, 165,
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186, 187, 184, 185, 190, 191, 188, 189,
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178, 179, 176, 177, 182, 183, 180, 181,
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138, 139, 136, 137, 142, 143, 140, 141,
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130, 131, 128, 129, 134, 135, 132, 133,
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155, 152, 153, 158, 159, 156, 157, 146,
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147, 144, 145, 150, 151, 148, 149, 234,
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232, 233, 238, 239, 236, 237, 226, 227,
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224, 225, 230, 231, 228, 229, 250, 248,
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254, 255, 252, 253, 242, 243, 240, 241,
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246, 247, 244, 245, 203, 201, 207, 205,
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194, 195, 192, 193, 198, 199, 196, 197,
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218, 219, 216, 217, 222, 223, 220, 221,
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210, 210, 211, 211, 208, 208, 209, 209,
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214, 214, 215, 215, 212, 212, 213, 213,
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};
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/*****************************************************************************/
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static int
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feed_8to16le(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
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{
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int i, j, k;
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k = FEEDER_FEED(f->source, c, b, count / 2, source);
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j = k - 1;
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i = j * 2 + 1;
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while (i > 0 && j >= 0) {
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b[i--] = b[j--];
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b[i--] = 0;
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}
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return k * 2;
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}
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static struct pcm_feederdesc feeder_8to16le_desc[] = {
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{FEEDER_FMT, AFMT_U8, AFMT_U16_LE, 0},
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{FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_U16_LE | AFMT_STEREO, 0},
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{FEEDER_FMT, AFMT_S8, AFMT_S16_LE, 0},
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{FEEDER_FMT, AFMT_S8 | AFMT_STEREO, AFMT_S16_LE | AFMT_STEREO, 0},
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{0},
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};
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static kobj_method_t feeder_8to16le_methods[] = {
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KOBJMETHOD(feeder_feed, feed_8to16le),
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{ 0, 0 }
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};
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FEEDER_DECLARE(feeder_8to16le, 0, NULL);
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/*****************************************************************************/
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static int
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feed_16to8_init(struct pcm_feeder *f)
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{
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f->data = malloc(FEEDBUFSZ, M_FMTFEEDER, M_NOWAIT | M_ZERO);
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return 0;
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}
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static int
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feed_16to8_free(struct pcm_feeder *f)
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{
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if (f->data)
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free(f->data, M_FMTFEEDER);
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f->data = NULL;
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return 0;
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}
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static int
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feed_16leto8(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
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{
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u_int32_t i = 0, toget = count * 2;
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int j = 1, k;
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k = FEEDER_FEED(f->source, c, f->data, min(toget, FEEDBUFSZ), source);
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while (j < k) {
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b[i++] = ((u_int8_t *)f->data)[j];
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j += 2;
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}
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return i;
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}
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static struct pcm_feederdesc feeder_16leto8_desc[] = {
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{FEEDER_FMT, AFMT_U16_LE, AFMT_U8, 0},
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{FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_U8 | AFMT_STEREO, 0},
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{FEEDER_FMT, AFMT_S16_LE, AFMT_S8, 0},
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{FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_S8 | AFMT_STEREO, 0},
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{0},
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};
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static kobj_method_t feeder_16leto8_methods[] = {
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KOBJMETHOD(feeder_init, feed_16to8_init),
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KOBJMETHOD(feeder_free, feed_16to8_free),
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KOBJMETHOD(feeder_feed, feed_16leto8),
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{ 0, 0 }
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};
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FEEDER_DECLARE(feeder_16leto8, 1, NULL);
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/*****************************************************************************/
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static int
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feed_monotostereo8(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
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{
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int i, j, k = FEEDER_FEED(f->source, c, b, count / 2, source);
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j = k - 1;
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i = j * 2 + 1;
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while (i > 0 && j >= 0) {
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b[i--] = b[j];
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b[i--] = b[j];
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j--;
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}
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return k * 2;
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}
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static struct pcm_feederdesc feeder_monotostereo8_desc[] = {
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{FEEDER_FMT, AFMT_U8, AFMT_U8 | AFMT_STEREO, 0},
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{FEEDER_FMT, AFMT_S8, AFMT_S8 | AFMT_STEREO, 0},
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{0},
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};
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static kobj_method_t feeder_monotostereo8_methods[] = {
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KOBJMETHOD(feeder_feed, feed_monotostereo8),
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{ 0, 0 }
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};
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FEEDER_DECLARE(feeder_monotostereo8, 0, NULL);
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/*****************************************************************************/
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static int
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feed_monotostereo16(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
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{
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int i, j, k = FEEDER_FEED(f->source, c, b, count / 2, source);
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u_int8_t x, y;
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j = k - 1;
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i = j * 2 + 1;
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while (i > 3 && j >= 1) {
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x = b[j--];
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y = b[j--];
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b[i--] = x;
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b[i--] = y;
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b[i--] = x;
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b[i--] = y;
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}
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return k * 2;
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}
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static struct pcm_feederdesc feeder_monotostereo16_desc[] = {
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{FEEDER_FMT, AFMT_U16_LE, AFMT_U16_LE | AFMT_STEREO, 0},
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{FEEDER_FMT, AFMT_S16_LE, AFMT_S16_LE | AFMT_STEREO, 0},
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{FEEDER_FMT, AFMT_U16_BE, AFMT_U16_BE | AFMT_STEREO, 0},
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{FEEDER_FMT, AFMT_S16_BE, AFMT_S16_BE | AFMT_STEREO, 0},
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{0},
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};
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static kobj_method_t feeder_monotostereo16_methods[] = {
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KOBJMETHOD(feeder_feed, feed_monotostereo16),
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{ 0, 0 }
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};
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FEEDER_DECLARE(feeder_monotostereo16, 0, NULL);
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/*****************************************************************************/
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static int
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feed_stereotomono8_init(struct pcm_feeder *f)
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{
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f->data = malloc(FEEDBUFSZ, M_FMTFEEDER, M_NOWAIT | M_ZERO);
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return 0;
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}
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static int
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feed_stereotomono8_free(struct pcm_feeder *f)
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{
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if (f->data)
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free(f->data, M_FMTFEEDER);
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f->data = NULL;
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return 0;
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}
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static int
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feed_stereotomono8(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
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{
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u_int32_t i = 0, toget = count * 2;
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int j = 0, k;
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k = FEEDER_FEED(f->source, c, f->data, min(toget, FEEDBUFSZ), source);
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while (j < k) {
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b[i++] = ((u_int8_t *)f->data)[j];
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j += 2;
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}
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return i;
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}
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static struct pcm_feederdesc feeder_stereotomono8_desc[] = {
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{FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_U8, 0},
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{FEEDER_FMT, AFMT_S8 | AFMT_STEREO, AFMT_S8, 0},
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{0},
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};
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static kobj_method_t feeder_stereotomono8_methods[] = {
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KOBJMETHOD(feeder_init, feed_stereotomono8_init),
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KOBJMETHOD(feeder_free, feed_stereotomono8_free),
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KOBJMETHOD(feeder_feed, feed_stereotomono8),
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{ 0, 0 }
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};
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FEEDER_DECLARE(feeder_stereotomono8, 1, NULL);
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/*****************************************************************************/
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static int
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feed_stereotomono16_init(struct pcm_feeder *f)
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{
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f->data = malloc(FEEDBUFSZ, M_FMTFEEDER, M_NOWAIT | M_ZERO);
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return 0;
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}
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static int
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feed_stereotomono16_free(struct pcm_feeder *f)
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{
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if (f->data)
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free(f->data, M_FMTFEEDER);
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f->data = NULL;
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return 0;
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}
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static int
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feed_stereotomono16(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
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{
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u_int32_t i = 0, toget = count * 2;
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int j = 0, k;
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k = FEEDER_FEED(f->source, c, f->data, min(toget, FEEDBUFSZ), source);
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while (j < k) {
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b[i++] = ((u_int8_t *)f->data)[j];
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b[i++] = ((u_int8_t *)f->data)[j + 1];
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j += 4;
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}
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return i;
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}
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static struct pcm_feederdesc feeder_stereotomono16_desc[] = {
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{FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_U16_LE, 0},
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{FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_S16_LE, 0},
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{FEEDER_FMT, AFMT_U16_BE | AFMT_STEREO, AFMT_U16_BE, 0},
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{FEEDER_FMT, AFMT_S16_BE | AFMT_STEREO, AFMT_S16_BE, 0},
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{0},
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};
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static kobj_method_t feeder_stereotomono16_methods[] = {
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KOBJMETHOD(feeder_init, feed_stereotomono16_init),
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KOBJMETHOD(feeder_free, feed_stereotomono16_free),
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KOBJMETHOD(feeder_feed, feed_stereotomono16),
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{ 0, 0 }
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};
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FEEDER_DECLARE(feeder_stereotomono16, 1, NULL);
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/*****************************************************************************/
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static int
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feed_endian(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
|
|
{
|
|
u_int8_t t;
|
|
int i = 0, j = FEEDER_FEED(f->source, c, b, count, source);
|
|
|
|
while (i < j) {
|
|
t = b[i];
|
|
b[i] = b[i + 1];
|
|
b[i + 1] = t;
|
|
i += 2;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static struct pcm_feederdesc feeder_endian_desc[] = {
|
|
{FEEDER_FMT, AFMT_U16_LE, AFMT_U16_BE, 0},
|
|
{FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_U16_BE | AFMT_STEREO, 0},
|
|
{FEEDER_FMT, AFMT_S16_LE, AFMT_S16_BE, 0},
|
|
{FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_S16_BE | AFMT_STEREO, 0},
|
|
{FEEDER_FMT, AFMT_U16_BE, AFMT_U16_LE, 0},
|
|
{FEEDER_FMT, AFMT_U16_BE | AFMT_STEREO, AFMT_U16_LE | AFMT_STEREO, 0},
|
|
{FEEDER_FMT, AFMT_S16_BE, AFMT_S16_LE, 0},
|
|
{FEEDER_FMT, AFMT_S16_BE | AFMT_STEREO, AFMT_S16_LE | AFMT_STEREO, 0},
|
|
{0},
|
|
};
|
|
static kobj_method_t feeder_endian_methods[] = {
|
|
KOBJMETHOD(feeder_feed, feed_endian),
|
|
{ 0, 0 }
|
|
};
|
|
FEEDER_DECLARE(feeder_endian, 0, NULL);
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int
|
|
feed_sign(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
|
|
{
|
|
int i = 0, j = FEEDER_FEED(f->source, c, b, count, source);
|
|
intptr_t ssz = (intptr_t)f->data, ofs = ssz - 1;
|
|
|
|
while (i < j) {
|
|
b[i + ofs] ^= 0x80;
|
|
i += ssz;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static struct pcm_feederdesc feeder_sign8_desc[] = {
|
|
{FEEDER_FMT, AFMT_U8, AFMT_S8, 0},
|
|
{FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_S8 | AFMT_STEREO, 0},
|
|
{FEEDER_FMT, AFMT_S8, AFMT_U8, 0},
|
|
{FEEDER_FMT, AFMT_S8 | AFMT_STEREO, AFMT_U8 | AFMT_STEREO, 0},
|
|
{0},
|
|
};
|
|
static kobj_method_t feeder_sign8_methods[] = {
|
|
KOBJMETHOD(feeder_feed, feed_sign),
|
|
{ 0, 0 }
|
|
};
|
|
FEEDER_DECLARE(feeder_sign8, 0, (void *)1);
|
|
|
|
static struct pcm_feederdesc feeder_sign16le_desc[] = {
|
|
{FEEDER_FMT, AFMT_U16_LE, AFMT_S16_LE, 0},
|
|
{FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_S16_LE | AFMT_STEREO, 0},
|
|
{FEEDER_FMT, AFMT_S16_LE, AFMT_U16_LE, 0},
|
|
{FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_U16_LE | AFMT_STEREO, 0},
|
|
{0},
|
|
};
|
|
static kobj_method_t feeder_sign16le_methods[] = {
|
|
KOBJMETHOD(feeder_feed, feed_sign),
|
|
{ 0, 0 }
|
|
};
|
|
FEEDER_DECLARE(feeder_sign16le, -1, (void *)2);
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int
|
|
feed_table(struct pcm_feeder *f, struct pcm_channel *c, u_int8_t *b, u_int32_t count, void *source)
|
|
{
|
|
int i = 0, j = FEEDER_FEED(f->source, c, b, count, source);
|
|
|
|
while (i < j) {
|
|
b[i] = ((u_int8_t *)f->data)[b[i]];
|
|
i++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static struct pcm_feederdesc feeder_ulawtou8_desc[] = {
|
|
{FEEDER_FMT, AFMT_MU_LAW, AFMT_U8, 0},
|
|
{FEEDER_FMT, AFMT_MU_LAW | AFMT_STEREO, AFMT_U8 | AFMT_STEREO, 0},
|
|
{0},
|
|
};
|
|
static kobj_method_t feeder_ulawtou8_methods[] = {
|
|
KOBJMETHOD(feeder_feed, feed_table),
|
|
{ 0, 0 }
|
|
};
|
|
FEEDER_DECLARE(feeder_ulawtou8, 0, ulaw_to_u8);
|
|
|
|
static struct pcm_feederdesc feeder_u8toulaw_desc[] = {
|
|
{FEEDER_FMT, AFMT_U8, AFMT_MU_LAW, 0},
|
|
{FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_MU_LAW | AFMT_STEREO, 0},
|
|
{0},
|
|
};
|
|
static kobj_method_t feeder_u8toulaw_methods[] = {
|
|
KOBJMETHOD(feeder_feed, feed_table),
|
|
{ 0, 0 }
|
|
};
|
|
FEEDER_DECLARE(feeder_u8toulaw, 0, u8_to_ulaw);
|
|
|
|
static struct pcm_feederdesc feeder_alawtoulaw_desc[] = {
|
|
{FEEDER_FMT, AFMT_A_LAW, AFMT_MU_LAW, 0},
|
|
{FEEDER_FMT, AFMT_A_LAW | AFMT_STEREO, AFMT_MU_LAW | AFMT_STEREO, 0},
|
|
{0},
|
|
};
|
|
static kobj_method_t feeder_alawtoulaw_methods[] = {
|
|
KOBJMETHOD(feeder_feed, feed_table),
|
|
{ 0, 0 }
|
|
};
|
|
FEEDER_DECLARE(feeder_alawtoulaw, 0, alaw_to_ulaw);
|
|
|
|
static struct pcm_feederdesc feeder_ulawtoalaw_desc[] = {
|
|
{FEEDER_FMT, AFMT_MU_LAW, AFMT_A_LAW, 0},
|
|
{FEEDER_FMT, AFMT_MU_LAW | AFMT_STEREO, AFMT_A_LAW | AFMT_STEREO, 0},
|
|
{0},
|
|
};
|
|
static kobj_method_t feeder_ulawtoalaw_methods[] = {
|
|
KOBJMETHOD(feeder_feed, feed_table),
|
|
{ 0, 0 }
|
|
};
|
|
FEEDER_DECLARE(feeder_ulawtoalaw, 0, ulaw_to_alaw);
|
|
|
|
|
|
|