d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add a format feeder for conversion from alaw to ulaw and vice versa.

Browse Source 
Submitted by:   Orion Hodson <O.Hodson@cs.ucl.ac.uk>
This commit is contained in:
Cameron Grant 2001-02-13 22:00:57 +00:00
parent 7ec3c4620e
commit 40765b397d
1 changed files with 93 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

93
sys/dev/sound/pcm/feeder_fmt.c
View File

@ -104,6 +104,76 @@ static unsigned char u8_to_ulaw[] = {
129, 129, 129, 129, 128, 128, 128, 128,
};
static unsigned char alaw_to_ulaw[] = {
42, 43, 40, 41, 46, 47, 44, 45,
34, 35, 32, 33, 38, 39, 36, 37,
57, 58, 55, 56, 61, 62, 59, 60,
49, 50, 48, 48, 53, 54, 51, 52,
10, 11, 8, 9, 14, 15, 12, 13,
2, 3, 0, 1, 6, 7, 4, 5,
26, 27, 24, 25, 30, 31, 28, 29,
18, 19, 16, 17, 22, 23, 20, 21,
98, 99, 96, 97, 102, 103, 100, 101,
93, 93, 92, 92, 95, 95, 94, 94,
116, 118, 112, 114, 124, 126, 120, 122,
106, 107, 104, 105, 110, 111, 108, 109,
72, 73, 70, 71, 76, 77, 74, 75,
64, 65, 63, 63, 68, 69, 66, 67,
86, 87, 84, 85, 90, 91, 88, 89,
79, 79, 78, 78, 82, 83, 80, 81,
170, 171, 168, 169, 174, 175, 172, 173,
162, 163, 160, 161, 166, 167, 164, 165,
185, 186, 183, 184, 189, 190, 187, 188,
177, 178, 176, 176, 181, 182, 179, 180,
138, 139, 136, 137, 142, 143, 140, 141,
130, 131, 128, 129, 134, 135, 132, 133,
154, 155, 152, 153, 158, 159, 156, 157,
146, 147, 144, 145, 150, 151, 148, 149,
226, 227, 224, 225, 230, 231, 228, 229,
221, 221, 220, 220, 223, 223, 222, 222,
244, 246, 240, 242, 252, 254, 248, 250,
234, 235, 232, 233, 238, 239, 236, 237,
200, 201, 198, 199, 204, 205, 202, 203,
192, 193, 191, 191, 196, 197, 194, 195,
214, 215, 212, 213, 218, 219, 216, 217,
207, 207, 206, 206, 210, 211, 208, 209,
};
static unsigned char ulaw_to_alaw[] = {
42, 43, 40, 41, 46, 47, 44, 45,
34, 35, 32, 33, 38, 39, 36, 37,
58, 59, 56, 57, 62, 63, 60, 61,
50, 51, 48, 49, 54, 55, 52, 53,
10, 11, 8, 9, 14, 15, 12, 13,
2, 3, 0, 1, 6, 7, 4, 5,
27, 24, 25, 30, 31, 28, 29, 18,
19, 16, 17, 22, 23, 20, 21, 106,
104, 105, 110, 111, 108, 109, 98, 99,
96, 97, 102, 103, 100, 101, 122, 120,
126, 127, 124, 125, 114, 115, 112, 113,
118, 119, 116, 117, 75, 73, 79, 77,
66, 67, 64, 65, 70, 71, 68, 69,
90, 91, 88, 89, 94, 95, 92, 93,
82, 82, 83, 83, 80, 80, 81, 81,
86, 86, 87, 87, 84, 84, 85, 85,
170, 171, 168, 169, 174, 175, 172, 173,
162, 163, 160, 161, 166, 167, 164, 165,
186, 187, 184, 185, 190, 191, 188, 189,
178, 179, 176, 177, 182, 183, 180, 181,
138, 139, 136, 137, 142, 143, 140, 141,
130, 131, 128, 129, 134, 135, 132, 133,
155, 152, 153, 158, 159, 156, 157, 146,
147, 144, 145, 150, 151, 148, 149, 234,
232, 233, 238, 239, 236, 237, 226, 227,
224, 225, 230, 231, 228, 229, 250, 248,
254, 255, 252, 253, 242, 243, 240, 241,
246, 247, 244, 245, 203, 201, 207, 205,
194, 195, 192, 193, 198, 199, 196, 197,
218, 219, 216, 217, 222, 223, 220, 221,
210, 210, 211, 211, 208, 208, 209, 209,
214, 214, 215, 215, 212, 212, 213, 213,
};
/*****************************************************************************/
static int
@ -447,4 +517,27 @@ static kobj_method_t feeder_u8toulaw_methods[] = {
};
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);