mirror of
https://github.com/signalwire/freeswitch.git
synced 2026-10-17 16:54:13 +00:00
update
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@418 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale committed
1 parent
1e04eb13b5
commit
0ea203849f
43 files changed
+3940
-4103
No files matched your search
+164
-153
@@ -47,71 +47,70 @@
|
||||
*/
|
||||
#define SIGN_BIT (0x80) /* Sign bit for a A-law byte. */
|
||||
#define QUANT_MASK (0xf) /* Quantization field mask. */
|
||||
#define NSEGS (8) /* Number of A-law segments. */
|
||||
#define SEG_SHIFT (4) /* Left shift for segment number. */
|
||||
#define NSEGS (8) /* Number of A-law segments. */
|
||||
#define SEG_SHIFT (4) /* Left shift for segment number. */
|
||||
#define SEG_MASK (0x70) /* Segment field mask. */
|
||||
|
||||
static short seg_aend[8] = { 0x1F, 0x3F, 0x7F, 0xFF,
|
||||
0x1FF, 0x3FF, 0x7FF, 0xFFF
|
||||
};
|
||||
static short seg_uend[8] = { 0x3F, 0x7F, 0xFF, 0x1FF,
|
||||
0x3FF, 0x7FF, 0xFFF, 0x1FFF
|
||||
};
|
||||
static short seg_aend[8] = {0x1F, 0x3F, 0x7F, 0xFF,
|
||||
0x1FF, 0x3FF, 0x7FF, 0xFFF};
|
||||
static short seg_uend[8] = {0x3F, 0x7F, 0xFF, 0x1FF,
|
||||
0x3FF, 0x7FF, 0xFFF, 0x1FFF};
|
||||
|
||||
/* copy from CCITT G.711 specifications */
|
||||
unsigned char _u2a[128] = { /* u- to A-law conversions */
|
||||
1, 1, 2, 2, 3, 3, 4, 4,
|
||||
5, 5, 6, 6, 7, 7, 8, 8,
|
||||
9, 10, 11, 12, 13, 14, 15, 16,
|
||||
17, 18, 19, 20, 21, 22, 23, 24,
|
||||
25, 27, 29, 31, 33, 34, 35, 36,
|
||||
37, 38, 39, 40, 41, 42, 43, 44,
|
||||
46, 48, 49, 50, 51, 52, 53, 54,
|
||||
55, 56, 57, 58, 59, 60, 61, 62,
|
||||
64, 65, 66, 67, 68, 69, 70, 71,
|
||||
72, 73, 74, 75, 76, 77, 78, 79,
|
||||
unsigned char _u2a[128] = { /* u- to A-law conversions */
|
||||
1, 1, 2, 2, 3, 3, 4, 4,
|
||||
5, 5, 6, 6, 7, 7, 8, 8,
|
||||
9, 10, 11, 12, 13, 14, 15, 16,
|
||||
17, 18, 19, 20, 21, 22, 23, 24,
|
||||
25, 27, 29, 31, 33, 34, 35, 36,
|
||||
37, 38, 39, 40, 41, 42, 43, 44,
|
||||
46, 48, 49, 50, 51, 52, 53, 54,
|
||||
55, 56, 57, 58, 59, 60, 61, 62,
|
||||
64, 65, 66, 67, 68, 69, 70, 71,
|
||||
72, 73, 74, 75, 76, 77, 78, 79,
|
||||
/* corrected:
|
||||
81, 82, 83, 84, 85, 86, 87, 88,
|
||||
should be: */
|
||||
80, 82, 83, 84, 85, 86, 87, 88,
|
||||
89, 90, 91, 92, 93, 94, 95, 96,
|
||||
97, 98, 99, 100, 101, 102, 103, 104,
|
||||
105, 106, 107, 108, 109, 110, 111, 112,
|
||||
113, 114, 115, 116, 117, 118, 119, 120,
|
||||
121, 122, 123, 124, 125, 126, 127, 128
|
||||
};
|
||||
80, 82, 83, 84, 85, 86, 87, 88,
|
||||
89, 90, 91, 92, 93, 94, 95, 96,
|
||||
97, 98, 99, 100, 101, 102, 103, 104,
|
||||
105, 106, 107, 108, 109, 110, 111, 112,
|
||||
113, 114, 115, 116, 117, 118, 119, 120,
|
||||
121, 122, 123, 124, 125, 126, 127, 128};
|
||||
|
||||
unsigned char _a2u[128] = { /* A- to u-law conversions */
|
||||
1, 3, 5, 7, 9, 11, 13, 15,
|
||||
16, 17, 18, 19, 20, 21, 22, 23,
|
||||
24, 25, 26, 27, 28, 29, 30, 31,
|
||||
32, 32, 33, 33, 34, 34, 35, 35,
|
||||
36, 37, 38, 39, 40, 41, 42, 43,
|
||||
44, 45, 46, 47, 48, 48, 49, 49,
|
||||
50, 51, 52, 53, 54, 55, 56, 57,
|
||||
58, 59, 60, 61, 62, 63, 64, 64,
|
||||
65, 66, 67, 68, 69, 70, 71, 72,
|
||||
unsigned char _a2u[128] = { /* A- to u-law conversions */
|
||||
1, 3, 5, 7, 9, 11, 13, 15,
|
||||
16, 17, 18, 19, 20, 21, 22, 23,
|
||||
24, 25, 26, 27, 28, 29, 30, 31,
|
||||
32, 32, 33, 33, 34, 34, 35, 35,
|
||||
36, 37, 38, 39, 40, 41, 42, 43,
|
||||
44, 45, 46, 47, 48, 48, 49, 49,
|
||||
50, 51, 52, 53, 54, 55, 56, 57,
|
||||
58, 59, 60, 61, 62, 63, 64, 64,
|
||||
65, 66, 67, 68, 69, 70, 71, 72,
|
||||
/* corrected:
|
||||
73, 74, 75, 76, 77, 78, 79, 79,
|
||||
should be: */
|
||||
73, 74, 75, 76, 77, 78, 79, 80,
|
||||
80, 81, 82, 83, 84, 85, 86, 87,
|
||||
88, 89, 90, 91, 92, 93, 94, 95,
|
||||
96, 97, 98, 99, 100, 101, 102, 103,
|
||||
104, 105, 106, 107, 108, 109, 110, 111,
|
||||
112, 113, 114, 115, 116, 117, 118, 119,
|
||||
120, 121, 122, 123, 124, 125, 126, 127
|
||||
};
|
||||
73, 74, 75, 76, 77, 78, 79, 80,
|
||||
80, 81, 82, 83, 84, 85, 86, 87,
|
||||
88, 89, 90, 91, 92, 93, 94, 95,
|
||||
96, 97, 98, 99, 100, 101, 102, 103,
|
||||
104, 105, 106, 107, 108, 109, 110, 111,
|
||||
112, 113, 114, 115, 116, 117, 118, 119,
|
||||
120, 121, 122, 123, 124, 125, 126, 127};
|
||||
|
||||
static short search(short val, short *table, short size)
|
||||
static short search(
|
||||
short val,
|
||||
short *table,
|
||||
short size)
|
||||
{
|
||||
short i;
|
||||
|
||||
for (i = 0; i < size; i++) {
|
||||
if (val <= *table++)
|
||||
return (i);
|
||||
}
|
||||
return (size);
|
||||
short i;
|
||||
|
||||
for (i = 0; i < size; i++) {
|
||||
if (val <= *table++)
|
||||
return (i);
|
||||
}
|
||||
return (size);
|
||||
}
|
||||
|
||||
/*
|
||||
@@ -133,63 +132,66 @@ static short search(short val, short *table, short size)
|
||||
* For further information see John C. Bellamy's Digital Telephony, 1982,
|
||||
* John Wiley & Sons, pps 98-111 and 472-476.
|
||||
*/
|
||||
unsigned char linear2alaw(short pcm_val)
|
||||
{ /* 2's complement (16-bit range) */
|
||||
short mask;
|
||||
short seg;
|
||||
unsigned char aval;
|
||||
unsigned char
|
||||
linear2alaw(short pcm_val) /* 2's complement (16-bit range) */
|
||||
{
|
||||
short mask;
|
||||
short seg;
|
||||
unsigned char aval;
|
||||
|
||||
pcm_val = pcm_val >> 3;
|
||||
|
||||
pcm_val = pcm_val >> 3;
|
||||
|
||||
if (pcm_val >= 0) {
|
||||
mask = 0xD5; /* sign (7th) bit = 1 */
|
||||
} else {
|
||||
mask = 0x55; /* sign bit = 0 */
|
||||
pcm_val = -pcm_val - 1;
|
||||
}
|
||||
|
||||
/* Convert the scaled magnitude to segment number. */
|
||||
seg = search(pcm_val, seg_aend, 8);
|
||||
|
||||
/* Combine the sign, segment, and quantization bits. */
|
||||
|
||||
if (seg >= 8) /* out of range, return maximum value. */
|
||||
return (unsigned char) (0x7F ^ mask);
|
||||
else {
|
||||
aval = (unsigned char) seg << SEG_SHIFT;
|
||||
if (seg < 2)
|
||||
aval |= (pcm_val >> 1) & QUANT_MASK;
|
||||
else
|
||||
aval |= (pcm_val >> seg) & QUANT_MASK;
|
||||
return (aval ^ mask);
|
||||
}
|
||||
if (pcm_val >= 0) {
|
||||
mask = 0xD5; /* sign (7th) bit = 1 */
|
||||
} else {
|
||||
mask = 0x55; /* sign bit = 0 */
|
||||
pcm_val = -pcm_val - 1;
|
||||
}
|
||||
|
||||
/* Convert the scaled magnitude to segment number. */
|
||||
seg = search(pcm_val, seg_aend, 8);
|
||||
|
||||
/* Combine the sign, segment, and quantization bits. */
|
||||
|
||||
if (seg >= 8) /* out of range, return maximum value. */
|
||||
return (unsigned char) (0x7F ^ mask);
|
||||
else {
|
||||
aval = (unsigned char) seg << SEG_SHIFT;
|
||||
if (seg < 2)
|
||||
aval |= (pcm_val >> 1) & QUANT_MASK;
|
||||
else
|
||||
aval |= (pcm_val >> seg) & QUANT_MASK;
|
||||
return (aval ^ mask);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* alaw2linear() - Convert an A-law value to 16-bit linear PCM
|
||||
*
|
||||
*/
|
||||
short alaw2linear(unsigned char a_val)
|
||||
short
|
||||
alaw2linear(
|
||||
unsigned char a_val)
|
||||
{
|
||||
short t;
|
||||
short seg;
|
||||
|
||||
a_val ^= 0x55;
|
||||
|
||||
t = (a_val & QUANT_MASK) << 4;
|
||||
seg = ((unsigned) a_val & SEG_MASK) >> SEG_SHIFT;
|
||||
switch (seg) {
|
||||
case 0:
|
||||
t += 8;
|
||||
break;
|
||||
case 1:
|
||||
t += 0x108;
|
||||
break;
|
||||
default:
|
||||
t += 0x108;
|
||||
t <<= seg - 1;
|
||||
}
|
||||
return ((a_val & SIGN_BIT) ? t : -t);
|
||||
short t;
|
||||
short seg;
|
||||
|
||||
a_val ^= 0x55;
|
||||
|
||||
t = (a_val & QUANT_MASK) << 4;
|
||||
seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT;
|
||||
switch (seg) {
|
||||
case 0:
|
||||
t += 8;
|
||||
break;
|
||||
case 1:
|
||||
t += 0x108;
|
||||
break;
|
||||
default:
|
||||
t += 0x108;
|
||||
t <<= seg - 1;
|
||||
}
|
||||
return ((a_val & SIGN_BIT) ? t : -t);
|
||||
}
|
||||
|
||||
#define BIAS (0x84) /* Bias for linear code. */
|
||||
@@ -224,38 +226,39 @@ short alaw2linear(unsigned char a_val)
|
||||
* For further information see John C. Bellamy's Digital Telephony, 1982,
|
||||
* John Wiley & Sons, pps 98-111 and 472-476.
|
||||
*/
|
||||
unsigned char linear2ulaw(short pcm_val)
|
||||
{ /* 2's complement (16-bit range) */
|
||||
short mask;
|
||||
short seg;
|
||||
unsigned char uval;
|
||||
|
||||
/* Get the sign and the magnitude of the value. */
|
||||
pcm_val = pcm_val >> 2;
|
||||
if (pcm_val < 0) {
|
||||
pcm_val = -pcm_val;
|
||||
mask = 0x7F;
|
||||
} else {
|
||||
mask = 0xFF;
|
||||
}
|
||||
if (pcm_val > CLIP)
|
||||
pcm_val = CLIP; /* clip the magnitude */
|
||||
pcm_val += (BIAS >> 2);
|
||||
|
||||
/* Convert the scaled magnitude to segment number. */
|
||||
seg = search(pcm_val, seg_uend, 8);
|
||||
|
||||
/*
|
||||
* Combine the sign, segment, quantization bits;
|
||||
* and complement the code word.
|
||||
*/
|
||||
if (seg >= 8) /* out of range, return maximum value. */
|
||||
return (unsigned char) (0x7F ^ mask);
|
||||
else {
|
||||
uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF);
|
||||
return (uval ^ mask);
|
||||
}
|
||||
|
||||
unsigned char
|
||||
linear2ulaw(
|
||||
short pcm_val) /* 2's complement (16-bit range) */
|
||||
{
|
||||
short mask;
|
||||
short seg;
|
||||
unsigned char uval;
|
||||
|
||||
/* Get the sign and the magnitude of the value. */
|
||||
pcm_val = pcm_val >> 2;
|
||||
if (pcm_val < 0) {
|
||||
pcm_val = -pcm_val;
|
||||
mask = 0x7F;
|
||||
} else {
|
||||
mask = 0xFF;
|
||||
}
|
||||
if ( pcm_val > CLIP ) pcm_val = CLIP; /* clip the magnitude */
|
||||
pcm_val += (BIAS >> 2);
|
||||
|
||||
/* Convert the scaled magnitude to segment number. */
|
||||
seg = search(pcm_val, seg_uend, 8);
|
||||
|
||||
/*
|
||||
* Combine the sign, segment, quantization bits;
|
||||
* and complement the code word.
|
||||
*/
|
||||
if (seg >= 8) /* out of range, return maximum value. */
|
||||
return (unsigned char) (0x7F ^ mask);
|
||||
else {
|
||||
uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF);
|
||||
return (uval ^ mask);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
@@ -267,35 +270,43 @@ unsigned char linear2ulaw(short pcm_val)
|
||||
* Note that this function expects to be passed the complement of the
|
||||
* original code word. This is in keeping with ISDN conventions.
|
||||
*/
|
||||
short ulaw2linear(unsigned char u_val)
|
||||
short
|
||||
ulaw2linear(
|
||||
unsigned char u_val)
|
||||
{
|
||||
short t;
|
||||
|
||||
/* Complement to obtain normal u-law value. */
|
||||
u_val = ~u_val;
|
||||
|
||||
/*
|
||||
* Extract and bias the quantization bits. Then
|
||||
* shift up by the segment number and subtract out the bias.
|
||||
*/
|
||||
t = ((u_val & QUANT_MASK) << 3) + BIAS;
|
||||
t <<= ((unsigned) u_val & SEG_MASK) >> SEG_SHIFT;
|
||||
|
||||
return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));
|
||||
short t;
|
||||
|
||||
/* Complement to obtain normal u-law value. */
|
||||
u_val = ~u_val;
|
||||
|
||||
/*
|
||||
* Extract and bias the quantization bits. Then
|
||||
* shift up by the segment number and subtract out the bias.
|
||||
*/
|
||||
t = ((u_val & QUANT_MASK) << 3) + BIAS;
|
||||
t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT;
|
||||
|
||||
return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));
|
||||
}
|
||||
|
||||
/* A-law to u-law conversion */
|
||||
unsigned char alaw2ulaw(unsigned char aval)
|
||||
unsigned char
|
||||
alaw2ulaw(
|
||||
unsigned char aval)
|
||||
{
|
||||
aval &= 0xff;
|
||||
return (unsigned char) ((aval & 0x80) ? (0xFF ^ _a2u[aval ^ 0xD5]) : (0x7F ^ _a2u[aval ^ 0x55]));
|
||||
aval &= 0xff;
|
||||
return (unsigned char) ((aval & 0x80) ? (0xFF ^ _a2u[aval ^ 0xD5]) :
|
||||
(0x7F ^ _a2u[aval ^ 0x55]));
|
||||
}
|
||||
|
||||
/* u-law to A-law conversion */
|
||||
unsigned char ulaw2alaw(unsigned char uval)
|
||||
unsigned char
|
||||
ulaw2alaw(
|
||||
unsigned char uval)
|
||||
{
|
||||
uval &= 0xff;
|
||||
return (unsigned char) ((uval & 0x80) ? (0xD5 ^ (_u2a[0xFF ^ uval] - 1)) : (0x55 ^ (_u2a[0x7F ^ uval] - 1)));
|
||||
uval &= 0xff;
|
||||
return (unsigned char) ((uval & 0x80) ? (0xD5 ^ (_u2a[0xFF ^ uval] - 1)) :
|
||||
(0x55 ^ (_u2a[0x7F ^ uval] - 1)));
|
||||
}
|
||||
|
||||
/* ---------- end of g711.c ----------------------------------------------------- */
|
||||
@@ -36,8 +36,7 @@
|
||||
static const char modname[] = "mod_g711codec";
|
||||
|
||||
|
||||
static switch_status switch_g711u_init(switch_codec *codec, switch_codec_flag flags,
|
||||
const struct switch_codec_settings *codec_settings)
|
||||
static switch_status switch_g711u_init(switch_codec *codec, switch_codec_flag flags, const struct switch_codec_settings *codec_settings)
|
||||
{
|
||||
int encoding, decoding;
|
||||
|
||||
@@ -58,7 +57,9 @@ static switch_status switch_g711u_encode(switch_codec *codec,
|
||||
size_t decoded_data_len,
|
||||
int decoded_rate,
|
||||
void *encoded_data,
|
||||
size_t *encoded_data_len, int *encoded_rate, unsigned int *flag)
|
||||
size_t *encoded_data_len,
|
||||
int *encoded_rate,
|
||||
unsigned int *flag)
|
||||
{
|
||||
short *dbuf;
|
||||
unsigned char *ebuf;
|
||||
@@ -82,7 +83,9 @@ static switch_status switch_g711u_decode(switch_codec *codec,
|
||||
size_t encoded_data_len,
|
||||
int encoded_rate,
|
||||
void *decoded_data,
|
||||
size_t *decoded_data_len, int *decoded_rate, unsigned int *flag)
|
||||
size_t *decoded_data_len,
|
||||
int *decoded_rate,
|
||||
unsigned int *flag)
|
||||
{
|
||||
short *dbuf;
|
||||
unsigned char *ebuf;
|
||||
@@ -111,8 +114,7 @@ static switch_status switch_g711u_destroy(switch_codec *codec)
|
||||
}
|
||||
|
||||
|
||||
static switch_status switch_g711a_init(switch_codec *codec, switch_codec_flag flags,
|
||||
const struct switch_codec_settings *codec_settings)
|
||||
static switch_status switch_g711a_init(switch_codec *codec, switch_codec_flag flags, const struct switch_codec_settings *codec_settings)
|
||||
{
|
||||
int encoding, decoding;
|
||||
|
||||
@@ -133,7 +135,9 @@ static switch_status switch_g711a_encode(switch_codec *codec,
|
||||
size_t decoded_data_len,
|
||||
int decoded_rate,
|
||||
void *encoded_data,
|
||||
size_t *encoded_data_len, int *encoded_rate, unsigned int *flag)
|
||||
size_t *encoded_data_len,
|
||||
int *encoded_rate,
|
||||
unsigned int *flag)
|
||||
{
|
||||
short *dbuf;
|
||||
unsigned char *ebuf;
|
||||
@@ -157,7 +161,9 @@ static switch_status switch_g711a_decode(switch_codec *codec,
|
||||
size_t encoded_data_len,
|
||||
int encoded_rate,
|
||||
void *decoded_data,
|
||||
size_t *decoded_data_len, int *decoded_rate, unsigned int *flag)
|
||||
size_t *decoded_data_len,
|
||||
int *decoded_rate,
|
||||
unsigned int *flag)
|
||||
{
|
||||
short *dbuf;
|
||||
unsigned char *ebuf;
|
||||
@@ -189,122 +195,126 @@ static switch_status switch_g711a_destroy(switch_codec *codec)
|
||||
|
||||
|
||||
static const switch_codec_implementation g711u_8k_60ms_implementation = {
|
||||
/*.samples_per_second */ 8000,
|
||||
/*.bits_per_second */ 19200,
|
||||
/*.microseconds_per_frame */ 60000,
|
||||
/*.samples_per_frame */ 480,
|
||||
/*.bytes_per_frame */ 960,
|
||||
/*.encoded_bytes_per_frame */ 480,
|
||||
/*.number_of_channels */ 1,
|
||||
/*.pref_frames_per_packet */ 1,
|
||||
/*.max_frames_per_packet */ 1,
|
||||
/*.init */ switch_g711u_init,
|
||||
/*.encode */ switch_g711u_encode,
|
||||
/*.decode */ switch_g711u_decode,
|
||||
/*.destroy */ switch_g711u_destroy
|
||||
/*.samples_per_second*/ 8000,
|
||||
/*.bits_per_second*/ 19200,
|
||||
/*.microseconds_per_frame*/ 60000,
|
||||
/*.samples_per_frame*/ 480,
|
||||
/*.bytes_per_frame*/ 960,
|
||||
/*.encoded_bytes_per_frame*/ 480,
|
||||
/*.number_of_channels*/ 1,
|
||||
/*.pref_frames_per_packet*/ 1,
|
||||
/*.max_frames_per_packet*/ 1,
|
||||
/*.init*/ switch_g711u_init,
|
||||
/*.encode*/ switch_g711u_encode,
|
||||
/*.decode*/ switch_g711u_decode,
|
||||
/*.destroy*/ switch_g711u_destroy
|
||||
};
|
||||
|
||||
static const switch_codec_implementation g711u_8k_30ms_implementation = {
|
||||
/*.samples_per_second */ 8000,
|
||||
/*.bits_per_second */ 96000,
|
||||
/*.microseconds_per_frame */ 30000,
|
||||
/*.samples_per_frame */ 240,
|
||||
/*.bytes_per_frame */ 480,
|
||||
/*.encoded_bytes_per_frame */ 240,
|
||||
/*.number_of_channels */ 1,
|
||||
/*.pref_frames_per_packet */ 1,
|
||||
/*.max_frames_per_packet */ 1,
|
||||
/*.init */ switch_g711u_init,
|
||||
/*.encode */ switch_g711u_encode,
|
||||
/*.decode */ switch_g711u_decode,
|
||||
/*.destroy */ switch_g711u_destroy,
|
||||
/*.next */ &g711u_8k_60ms_implementation
|
||||
/*.samples_per_second*/ 8000,
|
||||
/*.bits_per_second*/ 96000,
|
||||
/*.microseconds_per_frame*/ 30000,
|
||||
/*.samples_per_frame*/ 240,
|
||||
/*.bytes_per_frame*/ 480,
|
||||
/*.encoded_bytes_per_frame*/ 240,
|
||||
/*.number_of_channels*/ 1,
|
||||
/*.pref_frames_per_packet*/ 1,
|
||||
/*.max_frames_per_packet*/ 1,
|
||||
/*.init*/ switch_g711u_init,
|
||||
/*.encode*/ switch_g711u_encode,
|
||||
/*.decode*/ switch_g711u_decode,
|
||||
/*.destroy*/ switch_g711u_destroy,
|
||||
/*.next*/ &g711u_8k_60ms_implementation
|
||||
};
|
||||
|
||||
|
||||
static const switch_codec_implementation g711u_16k_implementation = {
|
||||
/*.samples_per_second */ 16000,
|
||||
/*.bits_per_second */ 128000,
|
||||
/*.microseconds_per_frame */ 20000,
|
||||
/*.samples_per_frame */ 320,
|
||||
/*.bytes_per_frame */ 640,
|
||||
/*.encoded_bytes_per_frame */ 320,
|
||||
/*.number_of_channels */ 1,
|
||||
/*.pref_frames_per_packet */ 1,
|
||||
/*.max_frames_per_packet */ 1,
|
||||
/*.init */ switch_g711u_init,
|
||||
/*.encode */ switch_g711u_encode,
|
||||
/*.decode */ switch_g711u_decode,
|
||||
/*.destroy */ switch_g711u_destroy,
|
||||
/*.samples_per_second*/ 16000,
|
||||
/*.bits_per_second*/ 128000,
|
||||
/*.microseconds_per_frame*/ 20000,
|
||||
/*.samples_per_frame*/ 320,
|
||||
/*.bytes_per_frame*/ 640,
|
||||
/*.encoded_bytes_per_frame*/ 320,
|
||||
/*.number_of_channels*/ 1,
|
||||
/*.pref_frames_per_packet*/ 1,
|
||||
/*.max_frames_per_packet*/ 1,
|
||||
/*.init*/ switch_g711u_init,
|
||||
/*.encode*/ switch_g711u_encode,
|
||||
/*.decode*/ switch_g711u_decode,
|
||||
/*.destroy*/ switch_g711u_destroy,
|
||||
};
|
||||
|
||||
static const switch_codec_implementation g711u_8k_implementation = {
|
||||
/*.samples_per_second */ 8000,
|
||||
/*.bits_per_second */ 64000,
|
||||
/*.microseconds_per_frame */ 20000,
|
||||
/*.samples_per_frame */ 160,
|
||||
/*.bytes_per_frame */ 320,
|
||||
/*.encoded_bytes_per_frame */ 160,
|
||||
/*.number_of_channels */ 1,
|
||||
/*.pref_frames_per_packet */ 1,
|
||||
/*.max_frames_per_packet */ 1,
|
||||
/*.init */ switch_g711u_init,
|
||||
/*.encode */ switch_g711u_encode,
|
||||
/*.decode */ switch_g711u_decode,
|
||||
/*.destroy */ switch_g711u_destroy,
|
||||
/*.next */ &g711u_16k_implementation
|
||||
/*.samples_per_second*/ 8000,
|
||||
/*.bits_per_second*/ 64000,
|
||||
/*.microseconds_per_frame*/ 20000,
|
||||
/*.samples_per_frame*/ 160,
|
||||
/*.bytes_per_frame*/ 320,
|
||||
/*.encoded_bytes_per_frame*/ 160,
|
||||
/*.number_of_channels*/ 1,
|
||||
/*.pref_frames_per_packet*/ 1,
|
||||
/*.max_frames_per_packet*/ 1,
|
||||
/*.init*/ switch_g711u_init,
|
||||
/*.encode*/ switch_g711u_encode,
|
||||
/*.decode*/ switch_g711u_decode,
|
||||
/*.destroy*/ switch_g711u_destroy,
|
||||
/*.next*/ &g711u_16k_implementation
|
||||
};
|
||||
|
||||
|
||||
static const switch_codec_implementation g711a_8k_implementation = {
|
||||
/*.samples_per_second */ 8000,
|
||||
/*.bits_per_second */ 64000,
|
||||
/*.microseconds_per_frame */ 20000,
|
||||
/*.samples_per_frame */ 160,
|
||||
/*.bytes_per_frame */ 320,
|
||||
/*.encoded_bytes_per_frame */ 160,
|
||||
/*.number_of_channels */ 1,
|
||||
/*.pref_frames_per_packet */ 1,
|
||||
/*.max_frames_per_packet */ 1,
|
||||
/*.init */ switch_g711a_init,
|
||||
/*.encode */ switch_g711a_encode,
|
||||
/*.decode */ switch_g711a_decode,
|
||||
/*.destroy */ switch_g711a_destroy
|
||||
/*.samples_per_second*/ 8000,
|
||||
/*.bits_per_second*/ 64000,
|
||||
/*.microseconds_per_frame*/ 20000,
|
||||
/*.samples_per_frame*/ 160,
|
||||
/*.bytes_per_frame*/ 320,
|
||||
/*.encoded_bytes_per_frame*/ 160,
|
||||
/*.number_of_channels*/ 1,
|
||||
/*.pref_frames_per_packet*/ 1,
|
||||
/*.max_frames_per_packet*/ 1,
|
||||
/*.init*/ switch_g711a_init,
|
||||
/*.encode*/ switch_g711a_encode,
|
||||
/*.decode*/ switch_g711a_decode,
|
||||
/*.destroy*/ switch_g711a_destroy
|
||||
};
|
||||
|
||||
|
||||
static const switch_codec_interface g711a_codec_interface = {
|
||||
/*.interface_name */ "g711 alaw",
|
||||
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
|
||||
/*.ianacode */ 8,
|
||||
/*.iananame */ "PCMA",
|
||||
/*.implementations */ &g711a_8k_implementation
|
||||
/*.interface_name*/ "g711 alaw",
|
||||
/*.codec_type*/ SWITCH_CODEC_TYPE_AUDIO,
|
||||
/*.ianacode*/ 8,
|
||||
/*.iananame*/ "PCMA",
|
||||
/*.implementations*/ &g711a_8k_implementation
|
||||
};
|
||||
|
||||
static const switch_codec_interface g711u_codec_interface = {
|
||||
/*.interface_name */ "g711 ulaw",
|
||||
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
|
||||
/*.ianacode */ 0,
|
||||
/*.iananame */ "PCMU",
|
||||
/*.implementations */ &g711u_8k_implementation,
|
||||
/*.next */ &g711a_codec_interface
|
||||
/*.interface_name*/ "g711 ulaw",
|
||||
/*.codec_type*/ SWITCH_CODEC_TYPE_AUDIO,
|
||||
/*.ianacode*/ 0,
|
||||
/*.iananame*/ "PCMU",
|
||||
/*.implementations*/ &g711u_8k_implementation,
|
||||
/*.next*/ &g711a_codec_interface
|
||||
};
|
||||
|
||||
static switch_loadable_module_interface g711_module_interface = {
|
||||
/*.module_name */ modname,
|
||||
/*.endpoint_interface */ NULL,
|
||||
/*.timer_interface */ NULL,
|
||||
/*.dialplan_interface */ NULL,
|
||||
/*.codec_interface */ &g711u_codec_interface,
|
||||
/*.application_interface */ NULL
|
||||
/*.module_name*/ modname,
|
||||
/*.endpoint_interface*/ NULL,
|
||||
/*.timer_interface*/ NULL,
|
||||
/*.dialplan_interface*/ NULL,
|
||||
/*.codec_interface*/ &g711u_codec_interface,
|
||||
/*.application_interface*/ NULL
|
||||
};
|
||||
|
||||
|
||||
SWITCH_MOD_DECLARE(switch_status) switch_module_load(const switch_loadable_module_interface **interface, char *filename)
|
||||
{
|
||||
SWITCH_MOD_DECLARE(switch_status) switch_module_load(const switch_loadable_module_interface **interface, char *filename) {
|
||||
/* connect my internal structure to the blank pointer passed to me */
|
||||
*interface = &g711_module_interface;
|
||||
|
||||
/* indicate that the module should continue to be loaded */
|
||||
return SWITCH_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in new issue
Block a user