use steve's g711 (thanks steve), chage the conditional mutex based on paul T's input (thanks paul) and take the yield away on switch_yield and just sleep

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@2663 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2006-09-12 17:17:02 +00:00
parent c6763869fe
commit b3c437630f
8 changed files with 414 additions and 1242 deletions

File diff suppressed because it is too large Load Diff

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@ -166,7 +166,7 @@ switch_mutex_unlock(obj->flag_mutex);
/*!
\brief Wait a desired number of microseconds and yield the CPU
*/
#define switch_yield(ms) apr_sleep(ms * 10); apr_thread_yield();
#define switch_yield(ms) apr_sleep(ms * 10); //apr_thread_yield();
/*!
\brief Declares a function designed to set a dymaic global string

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@ -1,12 +1,9 @@
CFLAGS += -I$(BASE)/libs/codec/g7xx/src/include/g7xx
all: $(MODNAME).$(DYNAMIC_LIB_EXTEN)
g711.o: g711.c g711.h
$(CC) $(CFLAGS) -c -O2 -pthread -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE g711.c -o g711.o
$(MODNAME).$(DYNAMIC_LIB_EXTEN): $(MODNAME).c g711.o
$(MODNAME).$(DYNAMIC_LIB_EXTEN): $(MODNAME).c
$(CC) $(CFLAGS) -fPIC -c $(MODNAME).c -o $(MODNAME).o
$(CC) $(SOLINK) g711.o $(MODNAME).o -o $(MODNAME).$(DYNAMIC_LIB_EXTEN) $(LDFLAGS)
$(CC) $(SOLINK) $(MODNAME).o -o $(MODNAME).$(DYNAMIC_LIB_EXTEN) $(LDFLAGS)

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@ -1,304 +0,0 @@
/*
* This source code is a product of Sun Microsystems, Inc. and is provided
* for unrestricted use. Users may copy or modify this source code without
* charge.
*
* SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
* THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun source code is provided with no support and without any obligation on
* the part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
/*
* December 30, 1994:
* Functions linear2alaw, linear2ulaw have been updated to correctly
* convert unquantized 16 bit values.
* Tables for direct u- to A-law and A- to u-law conversions have been
* corrected.
* Borge Lindberg, Center for PersonKommunikation, Aalborg University.
* bli@cpk.auc.dk
*
*/
/*
* Downloaded from comp.speech site in Cambridge.
*
*/
#include "g711.h"
#ifdef __ICC
#pragma warning (disable:810 869 1418)
#endif
/*
* g711.c
*
* u-law, A-law and linear PCM conversions.
*/
#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 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
};
/* 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,
/* 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
};
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
};
static short search(short val, short *table, short size)
{
short i;
for (i = 0; i < size; i++) {
if (val <= *table++)
return (i);
}
return (size);
}
/*
* linear2alaw() - Convert a 16-bit linear PCM value to 8-bit A-law
*
* linear2alaw() accepts an 16-bit integer and encodes it as A-law data.
*
* Linear Input Code Compressed Code
* ------------------------ ---------------
* 0000000wxyza 000wxyz
* 0000001wxyza 001wxyz
* 000001wxyzab 010wxyz
* 00001wxyzabc 011wxyz
* 0001wxyzabcd 100wxyz
* 001wxyzabcde 101wxyz
* 01wxyzabcdef 110wxyz
* 1wxyzabcdefg 111wxyz
*
* 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;
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 (unsigned char)(aval ^ mask);
}
}
/*
* alaw2linear() - Convert an A-law value to 16-bit linear PCM
*
*/
short alaw2linear(unsigned char a_val)
{
short t;
short seg;
a_val ^= 0x55;
t = (a_val & QUANT_MASK) << 4;
seg = (short)(((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. */
#define CLIP 8159
/*
* linear2ulaw() - Convert a linear PCM value to u-law
*
* In order to simplify the encoding process, the original linear magnitude
* is biased by adding 33 which shifts the encoding range from (0 - 8158) to
* (33 - 8191). The result can be seen in the following encoding table:
*
* Biased Linear Input Code Compressed Code
* ------------------------ ---------------
* 00000001wxyza 000wxyz
* 0000001wxyzab 001wxyz
* 000001wxyzabc 010wxyz
* 00001wxyzabcd 011wxyz
* 0001wxyzabcde 100wxyz
* 001wxyzabcdef 101wxyz
* 01wxyzabcdefg 110wxyz
* 1wxyzabcdefgh 111wxyz
*
* Each biased linear code has a leading 1 which identifies the segment
* number. The value of the segment number is equal to 7 minus the number
* of leading 0's. The quantization interval is directly available as the
* four bits wxyz. * The trailing bits (a - h) are ignored.
*
* Ordinarily the complement of the resulting code word is used for
* transmission, and so the code word is complemented before it is returned.
*
* 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 (unsigned char) (uval ^ mask);
}
}
/*
* ulaw2linear() - Convert a u-law value to 16-bit linear PCM
*
* First, a biased linear code is derived from the code word. An unbiased
* output can then be obtained by subtracting 33 from the biased code.
*
* 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 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)
{
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)
{
uval &= 0xff;
return (unsigned char) ((uval & 0x80) ? (0xD5 ^ (_u2a[0xFF ^ uval] - 1)) : (0x55 ^ (_u2a[0x7F ^ uval] - 1)));
}
/* ---------- end of g711.c ----------------------------------------------------- */

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@ -1,60 +0,0 @@
/*
* This source code is a product of Sun Microsystems, Inc. and is provided
* for unrestricted use. Users may copy or modify this source code without
* charge.
*
* SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
* THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun source code is provided with no support and without any obligation on
* the part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
/*
* December 30, 1994:
* Functions linear2alaw, linear2ulaw have been updated to correctly
* convert unquantized 16 bit values.
* Tables for direct u- to A-law and A- to u-law conversions have been
* corrected.
* Borge Lindberg, Center for PersonKommunikation, Aalborg University.
* bli@cpk.auc.dk
*
*/
/*
* Downloaded from comp.speech site in Cambridge.
*
*/
#ifndef _G711_H_
#define _G711_H_
#ifdef __cplusplus
extern "C" {
#endif
unsigned char linear2alaw(short pcm_val);
short alaw2linear(unsigned char a_val);
unsigned char linear2ulaw(short pcm_val);
short ulaw2linear(unsigned char u_val);
unsigned char alaw2ulaw(unsigned char aval);
unsigned char ulaw2alaw(unsigned char uval);
#ifdef __cplusplus
}
#endif
#endif /* _G711_H_ */

View File

@ -30,7 +30,7 @@
*
*/
#include <switch.h>
#include "g711.h"
#include "tmp.h"
static const char modname[] = "mod_g711";
@ -68,7 +68,7 @@ static switch_status_t switch_g711u_encode(switch_codec_t *codec,
ebuf = encoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
ebuf[i] = linear2ulaw(dbuf[i]);
ebuf[i] = linear_to_ulaw(dbuf[i]);
}
*encoded_data_len = i;
@ -96,7 +96,7 @@ static switch_status_t switch_g711u_decode(switch_codec_t *codec,
*decoded_data_len = codec->implementation->bytes_per_frame;
} else {
for (i = 0; i < encoded_data_len; i++) {
dbuf[i] = ulaw2linear(ebuf[i]);
dbuf[i] = ulaw_to_linear(ebuf[i]);
}
*decoded_data_len = i * 2;
@ -143,7 +143,7 @@ static switch_status_t switch_g711a_encode(switch_codec_t *codec,
ebuf = encoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
ebuf[i] = linear2alaw(dbuf[i]);
ebuf[i] = linear_to_alaw(dbuf[i]);
}
*encoded_data_len = i;
@ -171,7 +171,7 @@ static switch_status_t switch_g711a_decode(switch_codec_t *codec,
*decoded_data_len = codec->implementation->bytes_per_frame;
} else {
for (i = 0; i < encoded_data_len; i++) {
dbuf[i] = alaw2linear(ebuf[i]);
dbuf[i] = alaw_to_linear(ebuf[i]);
}
*decoded_data_len = i * 2;

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@ -566,7 +566,9 @@ SWITCH_DECLARE(switch_channel_state_t) switch_channel_perform_set_state(switch_c
channel->name,
state_names[last_state],
state_names[state]);
switch_mutex_lock(channel->flag_mutex);
channel->state = state;
switch_mutex_unlock(channel->flag_mutex);
if (state == CS_HANGUP && channel->hangup_cause == SWITCH_CAUSE_UNALLOCATED) {
channel->hangup_cause = SWITCH_CAUSE_NORMAL_CLEARING;
@ -859,8 +861,9 @@ SWITCH_DECLARE(switch_channel_state_t) switch_channel_perform_hangup(switch_chan
if (channel->state < CS_HANGUP) {
switch_event_t *event;
switch_channel_state_t last_state = channel->state;
switch_mutex_lock(channel->flag_mutex);
channel->state = CS_HANGUP;
switch_mutex_unlock(channel->flag_mutex);
channel->hangup_cause = hangup_cause;
switch_log_printf(SWITCH_CHANNEL_ID_LOG, (char *) file, func, line, SWITCH_LOG_NOTICE, "Hangup %s [%s] [%s]\n",
channel->name,

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@ -2468,7 +2468,11 @@ static void switch_core_standard_on_hold(switch_core_session_t *session)
SWITCH_DECLARE(void) switch_core_session_signal_state_change(switch_core_session_t *session)
{
switch_thread_cond_signal(session->cond);
/* If trylock fails the signal is already awake so we need'nt bother */
if (switch_mutex_trylock(session->mutex) == SWITCH_STATUS_SUCCESS) {
switch_thread_cond_signal(session->cond);
switch_mutex_unlock(session->mutex);
}
}
SWITCH_DECLARE(unsigned int) switch_core_session_runing(switch_core_session_t *session)
@ -2593,7 +2597,7 @@ SWITCH_DECLARE(void) switch_core_session_run(switch_core_session_t *session)
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "(%s) State NEW\n", switch_channel_get_name(session->channel));
break;
case CS_DONE:
continue;
goto done;
case CS_HANGUP: /* Deactivate and end the thread */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "(%s) State HANGUP\n", switch_channel_get_name(session->channel));
if (!driver_state_handler->on_hangup ||
@ -2630,8 +2634,7 @@ SWITCH_DECLARE(void) switch_core_session_run(switch_core_session_t *session)
switch_core_standard_on_hangup(session);
}
}
switch_channel_set_state(session->channel, CS_DONE);
midstate = switch_channel_get_state(session->channel);
goto done;
break;
case CS_INIT: /* Basic setup tasks */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "(%s) State INIT\n", switch_channel_get_name(session->channel));
@ -2864,10 +2867,13 @@ SWITCH_DECLARE(void) switch_core_session_run(switch_core_session_t *session)
switch_thread_cond_wait(session->cond, session->mutex);
}
}
done:
#ifdef CRASH_PROT
apr_hash_set(runtime.stack_table, &thread_id, sizeof(thread_id), NULL);
#endif
session->thread_running = 0;
switch_mutex_unlock(session->mutex);
}
SWITCH_DECLARE(void) switch_core_session_destroy(switch_core_session_t **session)