Changeset 2007

Timestamp:

Jun 12, 2008 12:48:59 PM (16 years ago)

Author:

nanang

Message:

Ticket #542: added new API and macro for sound device latency settings, also added new param for this in pjsua

Location:

pjproject/trunk

Files:

• pjmedia/include/pjmedia/config.h (modified) (1 diff)
• pjmedia/include/pjmedia/sound.h (modified) (1 diff)
• pjmedia/src/pjmedia/dsound.c (modified) (2 diffs)
• pjmedia/src/pjmedia/nullsound.c (modified) (1 diff)
• pjmedia/src/pjmedia/pasound.c (modified) (6 diffs)
• pjmedia/src/pjmedia/rtcp_xr.c (modified) (1 diff)
• pjmedia/src/pjmedia/symbian_sound.cpp (modified) (1 diff)
• pjsip-apps/src/pjsua/pjsua_app.c (modified) (8 diffs)

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

@@ -84 +84 @@
 
 /**
- * Specify PortAudio maximum buffering latency, in milliseconds.
- */
-#ifndef PJMEDIA_PASOUND_MAX_LATENCY
-#   define PJMEDIA_PASOUND_MAX_LATENCY      100
+ * Specify sound device latency default, in milisecond.
+ */
+#ifndef PJMEDIA_SND_DEFAULT_REC_LATENCY
+#   define PJMEDIA_SND_DEFAULT_REC_LATENCY  10
+#endif
+
+#ifndef PJMEDIA_SND_DEFAULT_PLAY_LATENCY
+#   define PJMEDIA_SND_DEFAULT_PLAY_LATENCY 100
 #endif
 

pjproject/trunk/pjmedia/include/pjmedia/sound.h

@@ -152 +152 @@
  */
 PJ_DECL(const pjmedia_snd_dev_info*) pjmedia_snd_get_dev_info(unsigned index);
+
+
+/**
+ * Set sound device latency, this function must be called before sound device
+ * opened, or otherwise default latency setting will be used, @see
+ * PJMEDIA_SND_DEFAULT_REC_LATENCY & PJMEDIA_SND_DEFAULT_PLAY_LATENCY.
+ *
+ * Choosing latency value is not straightforward, it should accomodate both 
+ * minimum latency and stability. Lower latency tends to cause sound device 
+ * less reliable (producing audio dropouts) on CPU load disturbance. Moreover,
+ * the best latency setting may vary based on many aspects, e.g: sound card, 
+ * CPU, OS, kernel, etc.
+ *
+ * @param input_latency     The latency of input device, in ms, set to 0
+ *                          for default PJMEDIA_SND_DEFAULT_REC_LATENCY.
+ * @param output_latency    The latency of output device, in ms, set to 0
+ *                          for default PJMEDIA_SND_DEFAULT_PLAY_LATENCY.
+ *
+ * @return                  PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_snd_set_latency(unsigned input_latency, 
+                                             unsigned output_latency);
 
 

pjproject/trunk/pjmedia/src/pjmedia/dsound.c

@@ -60 +60 @@
 static int snd_init_count;
 
+/* Latency settings */
+static unsigned snd_input_latency  = PJMEDIA_SND_DEFAULT_REC_LATENCY;
+static unsigned snd_output_latency = PJMEDIA_SND_DEFAULT_PLAY_LATENCY;
+
 
 /* Individual DirectSound capture/playback stream descriptor */
@@ -987 +991 @@
 
 
+/*
+ * Set sound latency.
+ */
+PJ_DEF(pj_status_t) pjmedia_snd_set_latency(unsigned input_latency, 
+                                            unsigned output_latency)
+{
+    PJ_TODO(APPLY_LATENCY_SETTINGS_ON_DSOUND);
+
+    snd_input_latency  = (input_latency == 0)? 
+                         PJMEDIA_SND_DEFAULT_REC_LATENCY : input_latency;
+    snd_output_latency = (output_latency == 0)? 
+                         PJMEDIA_SND_DEFAULT_PLAY_LATENCY : output_latency;
+
+    return PJ_SUCCESS;
+}
+
 #endif  /* PJMEDIA_SOUND_IMPLEMENTATION */
 

pjproject/trunk/pjmedia/src/pjmedia/nullsound.c

@@ -182 +182 @@
 }
 
+/*
+ * Set sound latency.
+ */
+PJ_DEF(pj_status_t) pjmedia_snd_set_latency(unsigned input_latency, 
+                                            unsigned output_latency)
+{
+    /* Nothing to do */
+    PJ_UNUSED_ARG(input_latency);
+    PJ_UNUSED_ARG(output_latency);
+    return PJ_SUCCESS;
+}
+
 #endif  /* PJMEDIA_SOUND_IMPLEMENTATION */

pjproject/trunk/pjmedia/src/pjmedia/pasound.c

@@ -29 +29 @@
 #define THIS_FILE       "pasound.c"
 
-#define MAX_LATENCY     (PJMEDIA_PASOUND_MAX_LATENCY / 1000.0)
-
 static int snd_init_count;
+
+/* Latency settings */
+static unsigned snd_input_latency  = PJMEDIA_SND_DEFAULT_REC_LATENCY;
+static unsigned snd_output_latency = PJMEDIA_SND_DEFAULT_PLAY_LATENCY;
 
 static struct snd_mgr
@@ -562 +564 @@
     inputParam.hostApiSpecificStreamInfo = NULL;
     inputParam.sampleFormat = sampleFormat;
-    inputParam.suggestedLatency = paDevInfo->defaultLowInputLatency;
-    if (inputParam.suggestedLatency > MAX_LATENCY)
-        inputParam.suggestedLatency = MAX_LATENCY;
+    inputParam.suggestedLatency = snd_input_latency / 1000.0;
 
     paHostApiInfo = Pa_GetHostApiInfo(paDevInfo->hostApi);
@@ -664 +664 @@
     outputParam.hostApiSpecificStreamInfo = NULL;
     outputParam.sampleFormat = sampleFormat;
-    outputParam.suggestedLatency = paDevInfo->defaultLowOutputLatency;
-    if (outputParam.suggestedLatency > MAX_LATENCY)
-        outputParam.suggestedLatency = MAX_LATENCY;
+    outputParam.suggestedLatency = snd_output_latency / 1000.0;
 
     paHostApiInfo = Pa_GetHostApiInfo(paDevInfo->hostApi);
@@ -795 +793 @@
     inputParam.hostApiSpecificStreamInfo = NULL;
     inputParam.sampleFormat = sampleFormat;
-    inputParam.suggestedLatency = paRecDevInfo->defaultLowInputLatency;
-    if (inputParam.suggestedLatency > MAX_LATENCY)
-        inputParam.suggestedLatency = MAX_LATENCY;
+    inputParam.suggestedLatency = snd_input_latency / 1000.0;
 
     paRecHostApiInfo = Pa_GetHostApiInfo(paRecDevInfo->hostApi);
@@ -806 +802 @@
     outputParam.hostApiSpecificStreamInfo = NULL;
     outputParam.sampleFormat = sampleFormat;
-    outputParam.suggestedLatency = paPlayDevInfo->defaultLowOutputLatency;
-    if (outputParam.suggestedLatency > MAX_LATENCY)
-        outputParam.suggestedLatency = MAX_LATENCY;
+    outputParam.suggestedLatency = snd_output_latency / 1000.0;
 
     paPlayHostApiInfo = Pa_GetHostApiInfo(paPlayDevInfo->hostApi);
@@ -1013 +1007 @@
 }
 
+/*
+ * Set sound latency.
+ */
+PJ_DEF(pj_status_t) pjmedia_snd_set_latency(unsigned input_latency, 
+                                            unsigned output_latency)
+{
+    snd_input_latency  = (input_latency == 0)? 
+                         PJMEDIA_SND_DEFAULT_REC_LATENCY : input_latency;
+    snd_output_latency = (output_latency == 0)? 
+                         PJMEDIA_SND_DEFAULT_PLAY_LATENCY : output_latency;
+
+    return PJ_SUCCESS;
+}
 
 #endif  /* PJMEDIA_SOUND_IMPLEMENTATION */

pjproject/trunk/pjmedia/src/pjmedia/rtcp_xr.c

@@ -327 +327 @@
          * is taken to be totally around 30ms + sound device latency.
          */
-        est_extra_delay = 30 + 
-#if PJMEDIA_SOUND_IMPLEMENTATION==PJMEDIA_SOUND_PORTAUDIO_SOUND
-                          PJMEDIA_PASOUND_MAX_LATENCY
-#elif PJMEDIA_SOUND_IMPLEMENTATION==PJMEDIA_SOUND_NULL_SOUND
-                          0
-#else
-                          (PJMEDIA_SOUND_BUFFER_COUNT * 15)
+        est_extra_delay = 30;
+
+#if PJMEDIA_SOUND_IMPLEMENTATION!=PJMEDIA_SOUND_NULL_SOUND
+        est_extra_delay += PJMEDIA_SND_DEFAULT_REC_LATENCY + 
+                           PJMEDIA_SND_DEFAULT_PLAY_LATENCY;
 #endif
-                          ;
+
         sess->stat.rx.voip_mtc.end_sys_delay = (pj_uint16_t)
                                  (sess->stat.rx.voip_mtc.rnd_trip_delay / 2 +

pjproject/trunk/pjmedia/src/pjmedia/symbian_sound.cpp

@@ -928 +928 @@
 }
 
+
+/*
+ * Set sound latency.
+ */
+PJ_DEF(pj_status_t) pjmedia_snd_set_latency(unsigned input_latency, 
+                                            unsigned output_latency)
+{
+    /* Nothing to do */
+    PJ_UNUSED_ARG(input_latency);
+    PJ_UNUSED_ARG(output_latency);
+    return PJ_SUCCESS;
+}

pjproject/trunk/pjsip-apps/src/pjsua/pjsua_app.c

@@ -86 +86 @@
 
     int                     capture_dev, playback_dev;
+    unsigned                capture_lat, playback_lat;
 } app_config;
 
@@ -195 +196 @@
     puts  ("  --capture-dev=id    Audio capture device ID (default=-1)");
     puts  ("  --playback-dev=id   Audio playback device ID (default=-1)");
+    puts  ("  --capture-lat=N     Audio capture latency, in ms (default=10)");
+    puts  ("  --playback-lat=N    Audio playback latency, in ms (default=100)");
 
     puts  ("");
@@ -253 +256 @@
     cfg->capture_dev = PJSUA_INVALID_ID;
     cfg->playback_dev = PJSUA_INVALID_ID;
+    cfg->capture_lat = PJMEDIA_SND_DEFAULT_REC_LATENCY;
+    cfg->playback_lat = PJMEDIA_SND_DEFAULT_PLAY_LATENCY;
 
     for (i=0; i<PJ_ARRAY_SIZE(cfg->acc_cfg); ++i)
@@ -414 +419 @@
            OPT_TLS_NEG_TIMEOUT,
            OPT_CAPTURE_DEV, OPT_PLAYBACK_DEV,
+           OPT_CAPTURE_LAT, OPT_PLAYBACK_LAT,
            OPT_AUTO_UPDATE_NAT,OPT_USE_COMPACT_FORM,OPT_DIS_CODEC
     };
@@ -500 +506 @@
         { "capture-dev",    1, 0, OPT_CAPTURE_DEV},
         { "playback-dev",   1, 0, OPT_PLAYBACK_DEV},
+        { "capture-lat",    1, 0, OPT_CAPTURE_LAT},
+        { "playback-lat",   1, 0, OPT_PLAYBACK_LAT},
         { NULL, 0, 0, 0}
     };
@@ -1076 +1084 @@
         case OPT_PLAYBACK_DEV:
             cfg->playback_dev = atoi(pj_optarg);
+            break;
+
+        case OPT_CAPTURE_LAT:
+            cfg->capture_lat = atoi(pj_optarg);
+            break;
+
+        case OPT_PLAYBACK_LAT:
+            cfg->playback_lat = atoi(pj_optarg);
             break;
 
@@ -1472 +1488 @@
     if (config->playback_dev != PJSUA_INVALID_ID) {
         pj_ansi_sprintf(line, "--playback-dev %d\n", config->playback_dev);
+        pj_strcat2(&cfg, line);
+    }
+
+    /* Sound device latency */
+    if (config->capture_lat != PJMEDIA_SND_DEFAULT_REC_LATENCY) {
+        pj_ansi_sprintf(line, "--capture-lat %d\n", config->capture_lat);
+        pj_strcat2(&cfg, line);
+    }
+    if (config->playback_dev != PJMEDIA_SND_DEFAULT_PLAY_LATENCY) {
+        pj_ansi_sprintf(line, "--playback-lat %d\n", config->playback_lat);
         pj_strcat2(&cfg, line);
     }
@@ -3714 +3740 @@
         goto on_error;
 
+    /* Set sound device latency */
+    pjmedia_snd_set_latency(app_config.capture_lat, app_config.playback_lat);
+
     /* Use null sound device? */
 #ifndef STEREO_DEMO