Changeset 658

Timestamp:

Aug 7, 2006 10:24:52 AM (18 years ago)

Author:

bennylp

Message:

Change set_ec_tail() API to set_ec() in sound port, also change suppressor to reduce mic signal by division rather than zeroing the signal. Also moved out VAD and EC settings to config.h.

Location:

pjproject/trunk

Files:

• pjmedia/include/pjmedia/config.h (modified) (2 diffs)
• pjmedia/include/pjmedia/silencedet.h (modified) (1 diff)
• pjmedia/include/pjmedia/sound_port.h (modified) (1 diff)
• pjmedia/src/pjmedia/echo_suppress.c (modified) (3 diffs)
• pjmedia/src/pjmedia/sound_port.c (modified) (3 diffs)
• pjsip-apps/src/pjsua_wince/pjsua_wince.cpp (modified) (2 diffs)
• pjsip/include/pjsua-lib/pjsua.h (modified) (2 diffs)
• pjsip/src/pjsua-lib/pjsua_media.c (modified) (2 diffs)

pjproject/trunk/pjmedia/include/pjmedia/config.h

@@ -162 +162 @@
 
 /**
+ * Suggested or default threshold to be set for fixed silence detection
+ * or as starting threshold for adaptive silence detection. The threshold
+ * has the range from zero to 255.
+ */
+#ifndef PJMEDIA_SILENCE_DET_THRESHOLD
+#   define PJMEDIA_SILENCE_DET_THRESHOLD        4
+#endif
+
+
+/**
  * G.711 Appendix I Packet Lost Concealment (PLC).
  * Enabled only when floating point is enabled.
@@ -176 +186 @@
 #ifndef PJMEDIA_HAS_SPEEX_AEC
 #   define PJMEDIA_HAS_SPEEX_AEC                1
+#endif
+
+
+/**
+ * Initial signal threshold to be applied to echo suppressor. When
+ * playback signal level is greater than this threshold, the microphone
+ * signal will be reduced or cut.
+ */
+#ifndef PJMEDIA_ECHO_SUPPRESS_THRESHOLD
+#   define PJMEDIA_ECHO_SUPPRESS_THRESHOLD      PJMEDIA_SILENCE_DET_THRESHOLD
+#endif
+
+
+/**
+ * The signal reduction factor to be applied into the microphone signal
+ * when the mic signal needs to be reduced. Valid values are [1-16], where
+ * 1 will leave signal as it is (thus probably transmitting the echo) and
+ * 16 will effectively zero the signal.
+ */
+#ifndef PJMEDIA_ECHO_SUPPRESS_FACTOR
+#   define PJMEDIA_ECHO_SUPPRESS_FACTOR         4
 #endif
 

pjproject/trunk/pjmedia/include/pjmedia/silencedet.h

@@ -44 +44 @@
 typedef struct pjmedia_silence_det pjmedia_silence_det;
 
-
-/**
- * Suggested or default threshold to be set for fixed silence detection
- * or as starting threshold for adaptive silence detection. The threshold
- * has the range from zero to 255.
- */
-#define PJMEDIA_SILENCE_DET_THRESHOLD   4
 
 

pjproject/trunk/pjmedia/include/pjmedia/sound_port.h

@@ -198 +198 @@
  *                          miliseconds. If zero is specified, the EC would
  *                          be disabled.
+ * @param options           The options to be passed to #pjmedia_echo_create().
  *
  * @return                  PJ_SUCCESS on success.
  */
-PJ_DECL(pj_status_t) pjmedia_snd_port_set_ec_tail(pjmedia_snd_port *snd_port,
-                                                  pj_pool_t *pool,
-                                                  unsigned tail_ms);
+PJ_DECL(pj_status_t) pjmedia_snd_port_set_ec( pjmedia_snd_port *snd_port,
+                                              pj_pool_t *pool,
+                                              unsigned tail_ms,
+                                              unsigned options);
 
 

pjproject/trunk/pjmedia/src/pjmedia/echo_suppress.c

@@ -28 +28 @@
 
 #define THIS_FILE                           "echo_suppress.c"
-#define PJMEDIA_ECHO_SUPPRESS_THRESHOLD     PJMEDIA_SILENCE_DET_THRESHOLD
 
 
@@ -160 +159 @@
 
     if (delay_ms < ec->tail_ms) {
+#if defined(PJMEDIA_ECHO_SUPPRESS_FACTOR) && PJMEDIA_ECHO_SUPPRESS_FACTOR!=0
+        unsigned i;
+        for (i=0; i<ec->samples_per_frame; ++i) {
+            rec_frm[i] = (pj_int16_t)(rec_frm[i] >> 
+                                      PJMEDIA_ECHO_SUPPRESS_FACTOR);
+        }
+#else
         pjmedia_zero_samples(rec_frm, ec->samples_per_frame);
+#endif
     }
 
@@ -186 +193 @@
 
     if (!silence) {
+#if defined(PJMEDIA_ECHO_SUPPRESS_FACTOR) && PJMEDIA_ECHO_SUPPRESS_FACTOR!=0
+        unsigned i;
+        for (i=0; i<ec->samples_per_frame; ++i) {
+            rec_frm[i] = (pj_int16_t)(rec_frm[i] >> 
+                                      PJMEDIA_ECHO_SUPPRESS_FACTOR);
+        }
+#else
         pjmedia_zero_samples(rec_frm, ec->samples_per_frame);
-    }
-
-    return PJ_SUCCESS;
-}
-
-
+#endif
+    }
+
+    return PJ_SUCCESS;
+}
+

pjproject/trunk/pjmedia/src/pjmedia/sound_port.c

@@ -250 +250 @@
     }
 
-    /* Create AEC only when direction is full duplex */
-    if (snd_port->dir == PJMEDIA_DIR_CAPTURE_PLAYBACK) {
-        status = pjmedia_snd_port_set_ec_tail(snd_port, pool, AEC_TAIL);
-        if (status != PJ_SUCCESS) {
-            PJ_LOG(4,(THIS_FILE, "Unable to create AEC"));
-            snd_port->ec_state = NULL;
-        }
-    }
 
     /* Start sound stream. */
@@ -433 +425 @@
  * Enable AEC
  */
-PJ_DEF(pj_status_t) pjmedia_snd_port_set_ec_tail(pjmedia_snd_port *snd_port,
-                                                 pj_pool_t *pool,
-                                                 unsigned tail_ms)
+PJ_DEF(pj_status_t) pjmedia_snd_port_set_ec( pjmedia_snd_port *snd_port,
+                                             pj_pool_t *pool,
+                                             unsigned tail_ms,
+                                             unsigned options)
 {
     pj_status_t status;
@@ -455 +448 @@
         status = pjmedia_echo_create(pool, snd_port->clock_rate, 
                                     snd_port->samples_per_frame, 
-                                    tail_ms, 0, &snd_port->ec_state);
+                                    tail_ms, options, &snd_port->ec_state);
         if (status != PJ_SUCCESS)
             snd_port->ec_state = NULL;

pjproject/trunk/pjsip-apps/src/pjsua_wince/pjsua_wince.cpp

@@ -39 +39 @@
 };
 
-#define DEFAULT_URI     "sip:192.168.0.66"
+#define DEFAULT_URI     "sip:192.168.0.7"
 
 
@@ -285 +285 @@
     /* Setup media */
     media_cfg.clock_rate = 8000;
-    //media_cfg.ec_tail_len = ;
+    media_cfg.ec_options = PJMEDIA_ECHO_SIMPLE;
     media_cfg.quality = 1;
     media_cfg.ptime = 20;

pjproject/trunk/pjsip/include/pjsua-lib/pjsua.h

@@ -2134 +2134 @@
 
     /**
+     * Echo canceller options (see #pjmedia_echo_create())
+     *
+     * Default: 0.
+     */
+    unsigned            ec_options;
+
+    /**
      * Echo canceller tail length, in miliseconds.
      *
@@ -2507 +2514 @@
  * @param tail_ms       The tail length, in miliseconds. Set to zero to
  *                      disable AEC.
+ * @param options       Options to be passed to #pjmedia_echo_create().
+ *                      Normally the value should be zero.
  *
  * @return              PJ_SUCCESS on success.
  */
-PJ_DECL(pj_status_t) pjsua_set_ec_tail(unsigned tail_ms);
+PJ_DECL(pj_status_t) pjsua_set_ec(unsigned tail_ms, unsigned options);
 
 

pjproject/trunk/pjsip/src/pjsua-lib/pjsua_media.c

@@ -970 +970 @@
 
     /* Set AEC */
-    pjmedia_snd_port_set_ec_tail(pjsua_var.snd_port, pjsua_var.pool, 
-                                 pjsua_var.media_cfg.ec_tail_len);
+    pjmedia_snd_port_set_ec( pjsua_var.snd_port, pjsua_var.pool, 
+                             pjsua_var.media_cfg.ec_tail_len, 
+                             pjsua_var.media_cfg.ec_options);
 
     /* Connect sound port to the bridge */       
@@ -1045 +1046 @@
  * Configure the AEC settings of the sound port.
  */
-PJ_DEF(pj_status_t) pjsua_set_ec_tail(unsigned tail_ms)
+PJ_DEF(pj_status_t) pjsua_set_ec(unsigned tail_ms, unsigned options)
 {
     pjsua_var.media_cfg.ec_tail_len = tail_ms;
 
     if (pjsua_var.snd_port)
-        return pjmedia_snd_port_set_ec_tail(pjsua_var.snd_port, pjsua_var.pool,
-                                            tail_ms);
+        return pjmedia_snd_port_set_ec( pjsua_var.snd_port, pjsua_var.pool,
+                                        tail_ms, options);
     
     return PJ_SUCCESS;