Changeset 277 for pjproject

Timestamp:

Mar 4, 2006 2:52:44 PM (19 years ago)

Author:

bennylp

Message:

Major modification in conference bridge to allow ports with different ptime and sampling rate. Also introduced sampling rate converter

Location:

pjproject/trunk

Files:

• pjmedia/build/pjmedia.dsp (modified) (4 diffs)
• pjmedia/include/pjmedia/conference.h (modified) (1 diff)
• pjmedia/include/pjmedia/resample.h (added)
• pjmedia/src/pjmedia/conference.c (modified) (27 diffs)
• pjmedia/src/pjmedia/file_port.c (modified) (7 diffs)
• pjmedia/src/pjmedia/largefilter.h (added)
• pjmedia/src/pjmedia/resample.c (added)
• pjmedia/src/pjmedia/smallfilter.h (added)
• pjsip-apps/src/pjsua/main.c (modified) (1 diff)
• pjsip/include/pjsua-lib/pjsua.h (modified) (1 diff)
• pjsip/src/pjsua-lib/pjsua_core.c (modified) (2 diffs)
• pjsip/src/pjsua-lib/pjsua_settings.c (modified) (4 diffs)

pjproject/trunk/pjmedia/build/pjmedia.dsp

@@ -134 +134 @@
 # Begin Source File
 
+SOURCE=..\src\pjmedia\resample.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\src\pjmedia\rtcp.c
 # End Source File
@@ -214 +218 @@
 # Begin Source File
 
+SOURCE=..\include\pjmedia\resample.h
+# End Source File
+# Begin Source File
+
 SOURCE=..\include\pjmedia\rtcp.h
 # End Source File
@@ -257 +265 @@
 # End Source File
 # End Group
-# Begin Group "PortAudio"
+# Begin Group "PortAudio Files"
 
 # PROP Default_Filter ""
@@ -394 +402 @@
 
 SOURCE=..\src\pjmedia\portaudio\portaudio.h
+# End Source File
+# End Group
+# Begin Group "Resample Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\src\pjmedia\largefilter.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\src\pjmedia\smallfilter.h
 # End Source File
 # End Group

pjproject/trunk/pjmedia/include/pjmedia/conference.h

@@ -46 +46 @@
     pjmedia_port_op     rx_setting;
     pj_bool_t          *listener;
+    unsigned            clock_rate;
+    unsigned            samples_per_frame;
 } pjmedia_conf_port_info;
 

pjproject/trunk/pjmedia/src/pjmedia/conference.c

@@ -18 +18 @@
  */
 #include <pjmedia/conference.h>
-#include <pjmedia/silencedet.h>
-#include <pjmedia/stream.h>
-#include <pjmedia/sound.h>
 #include <pjmedia/errno.h>
 #include <pjmedia/port.h>
+#include <pjmedia/resample.h>
+#include <pjmedia/silencedet.h>
+#include <pjmedia/sound.h>
+#include <pjmedia/stream.h>
 #include <pj/assert.h>
 #include <pj/log.h>
@@ -40 +41 @@
 #define RX_BUF_COUNT    8
 
+#define BYTES_PER_SAMPLE    2
+
 /*
  * DON'T GET CONFUSED!!
@@ -48 +51 @@
 
 
+/**
+ * This is a port connected to conference bridge.
+ */
 struct conf_port
 {
@@ -58 +64 @@
     pjmedia_silence_det *vad;           /**< VAD for this port.             */
 
-    /* Tx buffer contains the frame to be "transmitted" to this port
-     * (i.e. for put_frame()).
-     * We use dual buffer since the port may be accessed by two threads,
-     * and we don't want to use mutex for synchronization.
+    /* Shortcut for port info. */
+    unsigned             clock_rate;    /**< Port's clock rate.             */
+    unsigned             samples_per_frame; /**< Port's samples per frame.  */
+
+    /* Resample, for converting clock rate, if they're different. */
+    pjmedia_resample    *rx_resample;
+    pjmedia_resample    *tx_resample;
+
+    /* RX buffer is temporary buffer to be used when there is mismatch
+     * between port's sample rate or ptime with conference's sample rate
+     * or ptime. When both sample rate and ptime of the port match the
+     * conference settings, this buffer will not be used.
+     * 
+     * This buffer contains samples at port's clock rate.
+     * The size of this buffer is the sum between port's samples per frame
+     * and bridge's samples per frame.
      */
-    pj_int16_t          *cur_tx_buf;    /**< Buffer for put_frame().        */
-    pj_int16_t          *tx_buf1;       /**< Buffer 1.                      */
-    pj_int16_t          *tx_buf2;       /**< Buffer 2.                      */
-
-    /* Rx buffers is a special buffer for sound device port (port 0). 
-     * It's not used by other ports.
-     */
-    int                  rx_write, rx_read;
-    pj_int16_t          *rx_buf[RX_BUF_COUNT];  /**< Buffer                         */
-
-
-    /* Sum buf is a temporary buffer used to calculate the average signal
+    pj_int16_t          *rx_buf;        /**< The RX buffer.                 */
+    unsigned             rx_buf_cap;    /**< Max size, in samples           */
+    unsigned             rx_buf_count;  /**< # of samples in the buf.       */
+
+    /* Mix buf is a temporary buffer used to calculate the average signal
      * received by this port from all other ports.
+     *
+     * This buffer contains samples at bridge's clock rate.
+     * The size of this buffer is equal to samples per frame of the bridge.
+     *
+     * Note that the samples here are unsigned 32bit.
      */
     unsigned             sources;       /**< Number of sources.             */
-    pj_uint32_t         *sum_buf;       /**< Total sum of signal.           */
+    pj_uint32_t         *mix_buf;       /**< Total sum of signal.           */
+
+    /* Tx buffer is a temporary buffer to be used when there's mismatch 
+     * between port's clock rate or ptime with conference's sample rate
+     * or ptime. When both sample rate and ptime of the port match the
+     * conference's settings, this buffer will not be used.
+     * 
+     * This buffer contains samples at port's clock rate.
+     * The size of this buffer is the sum between port's samples per frame
+     * and bridge's samples per frame.
+     */
+    pj_int16_t          *tx_buf;        /**< Tx buffer.                     */
+    unsigned             tx_buf_cap;    /**< Max size, in samples.          */
+    unsigned             tx_buf_count;  /**< # of samples in the buffer.    */
+
+    /* Snd buffers is a special buffer for sound device port (port 0). 
+     * It's not used by other ports.
+     *
+     * There are multiple numbers of this buffer, because we can not expect
+     * the mic and speaker thread to run equally after one another. In most
+     * systems, each thread will run multiple times before the other thread
+     * gains execution time. For example, in my system, mic thread is called
+     * three times, then speaker thread is called three times, and so on.
+     */
+    int                  snd_write_pos, snd_read_pos;
+    pj_int16_t          *snd_buf[RX_BUF_COUNT]; /**< Buffer                 */
 };
 
@@ -95 +136 @@
     struct conf_port    **ports;        /**< Array of ports.                */
     pj_uint16_t          *uns_buf;      /**< Buf for unsigned conversion    */
-    unsigned              sampling_rate;        /**< Sampling rate.         */
+    unsigned              clock_rate;   /**< Sampling rate.         */
     unsigned              samples_per_frame;    /**< Samples per frame.     */
     unsigned              bits_per_sample;      /**< Bits per sample.       */
-    pj_snd_stream_info    snd_info;
+    pj_snd_stream_info    snd_info;     /**< Sound device parameter.        */
 };
 
@@ -120 +161 @@
 static pj_status_t create_conf_port( pj_pool_t *pool,
                                      pjmedia_conf *conf,
+                                     pjmedia_port *port,
                                      const pj_str_t *name,
                                      struct conf_port **p_conf_port)
@@ -150 +192 @@
     pjmedia_silence_det_set_adaptive(conf_port->vad, conf->samples_per_frame);
 
-
-    /* Create TX buffers. */
-    conf_port->tx_buf1 = pj_pool_zalloc(pool, conf->samples_per_frame *
-                                              sizeof(conf_port->tx_buf1[0]));
-    PJ_ASSERT_RETURN(conf_port->tx_buf1, PJ_ENOMEM);
-
-    conf_port->tx_buf2 = pj_pool_zalloc(pool, conf->samples_per_frame *
-                                              sizeof(conf_port->tx_buf2[0]));
-    PJ_ASSERT_RETURN(conf_port->tx_buf2, PJ_ENOMEM);
-
-    /* Set initial TX buffer */
-    conf_port->cur_tx_buf = conf_port->tx_buf1;
-
-    /* Create temporary buffer to calculate average signal received by
-     * this port.
+    /* Save some port's infos, for convenience. */
+    if (port) {
+        conf_port->port = port;
+        conf_port->clock_rate = port->info.sample_rate;
+        conf_port->samples_per_frame = port->info.samples_per_frame;
+    } else {
+        conf_port->port = NULL;
+        conf_port->clock_rate = conf->clock_rate;
+        conf_port->samples_per_frame = conf->samples_per_frame;
+    }
+
+    /* If port's clock rate is different than conference's clock rate,
+     * create a resample sessions.
      */
-    conf_port->sum_buf = pj_pool_zalloc(pool, conf->samples_per_frame *
-                                              sizeof(conf_port->sum_buf[0]));
-
-    
+    if (conf_port->clock_rate != conf->clock_rate) {
+
+        double factor;
+
+        factor = 1.0 * conf_port->clock_rate / conf->clock_rate;
+
+        /* Create resample for rx buffer. */
+        status = pjmedia_resample_create( pool, 
+                                          PJ_TRUE,  /* High quality */
+                                          PJ_TRUE,  /* Large filter */
+                                          conf_port->clock_rate,/* Rate in */
+                                          conf->clock_rate, /* Rate out */
+                                          (unsigned)(conf->samples_per_frame * 
+                                                     factor),
+                                          &conf_port->rx_resample);
+        if (status != PJ_SUCCESS)
+            return status;
+
+
+        /* Create resample for tx buffer. */
+        status = pjmedia_resample_create(pool,
+                                         PJ_TRUE,   /* High quality */
+                                         PJ_TRUE,   /* Large filter */
+                                         conf->clock_rate,  /* Rate in */
+                                         conf_port->clock_rate, /* Rate out */
+                                         conf->samples_per_frame,
+                                         &conf_port->tx_resample);
+        if (status != PJ_SUCCESS)
+            return status;
+    }
+
+    /*
+     * Initialize rx and tx buffer, only when port's samples per frame or 
+     * port's clock rate is different then the conference bridge settings.
+     */
+    if (conf_port->clock_rate != conf->clock_rate ||
+        conf_port->samples_per_frame != conf->samples_per_frame)
+    {
+        /* Create RX buffer. */
+        conf_port->rx_buf_cap = (unsigned)(conf_port->samples_per_frame +
+                                           conf->samples_per_frame * 
+                                           conf_port->clock_rate * 1.0 /
+                                           conf->clock_rate);
+        conf_port->rx_buf_count = 0;
+        conf_port->rx_buf = pj_pool_alloc(pool, conf_port->rx_buf_cap *
+                                                sizeof(conf_port->rx_buf[0]));
+        PJ_ASSERT_RETURN(conf_port->rx_buf, PJ_ENOMEM);
+
+        /* Create TX buffer. */
+        conf_port->tx_buf_cap = conf_port->rx_buf_cap;
+        conf_port->tx_buf_count = 0;
+        conf_port->tx_buf = pj_pool_alloc(pool, conf_port->tx_buf_cap *
+                                                sizeof(conf_port->tx_buf[0]));
+        PJ_ASSERT_RETURN(conf_port->tx_buf, PJ_ENOMEM);
+    }
+
+
+    /* Create mix buffer. */
+    conf_port->mix_buf = pj_pool_zalloc(pool, conf->samples_per_frame *
+                                              sizeof(conf_port->mix_buf[0]));
+    PJ_ASSERT_RETURN(conf_port->mix_buf, PJ_ENOMEM);
+
 
     /* Done */
@@ -190 +288 @@
     /* Init default sound device parameters. */
     pj_memset(&conf->snd_info, 0, sizeof(conf->snd_info));
-    conf->snd_info.samples_per_sec = conf->sampling_rate;
+    conf->snd_info.samples_per_sec = conf->clock_rate;
     conf->snd_info.bits_per_sample = conf->bits_per_sample;
     conf->snd_info.samples_per_frame = conf->samples_per_frame;
@@ -199 +297 @@
 
     /* Create port */
-    status = create_conf_port(pool, conf, &name, &conf_port);
+    status = create_conf_port(pool, conf, NULL, &name, &conf_port);
     if (status != PJ_SUCCESS)
         goto on_error;
@@ -205 +303 @@
     /* Sound device has rx buffers. */
     for (i=0; i<RX_BUF_COUNT; ++i) {
-        conf_port->rx_buf[i] = pj_pool_zalloc(pool, conf->samples_per_frame *
-                                              sizeof(conf_port->rx_buf[0][0]));
-        if (conf_port->rx_buf[i] == NULL) {
+        conf_port->snd_buf[i] = pj_pool_zalloc(pool, conf->samples_per_frame *
+                                              sizeof(conf_port->snd_buf[0][0]));
+        if (conf_port->snd_buf[i] == NULL) {
             status = PJ_ENOMEM;
             goto on_error;
         }
     }
-    conf_port->rx_write = 0;
-    conf_port->rx_read = 0;
+    conf_port->snd_write_pos = 0;
+    conf_port->snd_read_pos = 0;
 
 
@@ -233 +331 @@
 PJ_DEF(pj_status_t) pjmedia_conf_create( pj_pool_t *pool,
                                          unsigned max_ports,
-                                         unsigned sampling_rate,
+                                         unsigned clock_rate,
                                          unsigned samples_per_frame,
                                          unsigned bits_per_sample,
@@ -241 +339 @@
     pj_status_t status;
 
+    /* Can only accept 16bits per sample, for now.. */
+    PJ_ASSERT_RETURN(bits_per_sample == 16, PJ_EINVAL);
+
     PJ_LOG(5,(THIS_FILE, "Creating conference bridge with %d ports",
               max_ports));
@@ -252 +353 @@
 
     conf->max_ports = max_ports;
-    conf->sampling_rate = sampling_rate;
+    conf->clock_rate = clock_rate;
     conf->samples_per_frame = samples_per_frame;
     conf->bits_per_sample = bits_per_sample;
@@ -403 +504 @@
 
     /* Create port structure. */
-    status = create_conf_port(pool, conf, port_name, &conf_port);
+    status = create_conf_port(pool, conf, strm_port, port_name, &conf_port);
     if (status != PJ_SUCCESS) {
         pj_mutex_unlock(conf->mutex);
         return status;
     }
-
-    /* Set the port */
-    conf_port->port = strm_port;
 
     /* Put the port. */
@@ -635 +733 @@
     info->rx_setting = conf_port->rx_setting;
     info->listener = conf_port->listeners;
+    info->clock_rate = conf_port->clock_rate;
+    info->samples_per_frame = conf_port->samples_per_frame;
 
     return PJ_SUCCESS;
@@ -672 +772 @@
     return (pj_int16_t)(uns - 32767);
 }
+
+/* Copy samples */
+PJ_INLINE(void) copy_samples(pj_int16_t *dst, 
+                                const pj_int16_t *src,
+                                unsigned count)
+{
+    unsigned i;
+    for (i=0; i<count; ++i)
+        dst[i] = src[i];
+}
+
+/* Zero samples. */
+PJ_INLINE(void) zero_samples(pj_int16_t *buf, unsigned count)
+{
+    unsigned i;
+    for (i=0; i<count; ++i)
+        buf[i] = 0;
+}
+
+
+/*
+ * Read from port.
+ */
+static pj_status_t read_port( pjmedia_conf *conf,
+                              struct conf_port *cport, pj_int16_t *frame,
+                              pj_size_t count, pjmedia_frame_type *type )
+{
+
+    pj_assert(count == conf->samples_per_frame);
+
+    /* If port's samples per frame and sampling rate matches conference
+     * bridge's settings, get the frame directly from the port.
+     */
+    if (cport->rx_buf_cap == 0) {
+        pjmedia_frame f;
+        pj_status_t status;
+
+        f.buf = frame;
+        f.size = count * BYTES_PER_SAMPLE;
+
+        status = (cport->port->get_frame)(cport->port, &f);
+
+        *type = f.type;
+
+        return status;
+
+    } else {
+
+        /*
+         * If we don't have enough samples in rx_buf, read from the port 
+         * first. Remember that rx_buf may be in different clock rate!
+         */
+        while (cport->rx_buf_count < count * 1.0 *
+                cport->clock_rate / conf->clock_rate) {
+
+            pjmedia_frame f;
+            pj_status_t status;
+
+            f.buf = cport->rx_buf + cport->rx_buf_count;
+            f.size = cport->samples_per_frame * BYTES_PER_SAMPLE;
+
+            status = pjmedia_port_get_frame(cport->port, &f);
+
+            if (status != PJ_SUCCESS) {
+                /* Fatal error! */
+                return status;
+            }
+
+            if (f.type != PJMEDIA_FRAME_TYPE_AUDIO) {
+                zero_samples( cport->rx_buf + cport->rx_buf_count,
+                              cport->samples_per_frame);
+            }
+
+            cport->rx_buf_count += cport->samples_per_frame;
+
+            pj_assert(cport->rx_buf_count <= cport->rx_buf_cap);
+        }
+
+        /*
+         * If port's clock_rate is different, resample.
+         * Otherwise just copy.
+         */
+        if (cport->clock_rate != conf->clock_rate) {
+            
+            unsigned src_count;
+
+            pjmedia_resample_run( cport->rx_resample,cport->rx_buf, frame);
+
+            src_count = (unsigned)(count * 1.0 * cport->clock_rate / 
+                                   conf->clock_rate);
+            cport->rx_buf_count -= src_count;
+            if (cport->rx_buf_count) {
+                copy_samples(cport->rx_buf, cport->rx_buf+src_count,
+                             cport->rx_buf_count);
+            }
+
+        } else {
+
+            copy_samples(frame, cport->rx_buf, count);
+            cport->rx_buf_count -= count;
+            if (cport->rx_buf_count) {
+                copy_samples(cport->rx_buf, cport->rx_buf+count,
+                             cport->rx_buf_count);
+            }
+        }
+    }
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Write the mixed signal to the port.
+ */
+static pj_status_t write_port(pjmedia_conf *conf, struct conf_port *cport,
+                              pj_uint32_t timestamp)
+{
+    pj_int16_t *buf;
+    unsigned j;
+
+    /* If port is muted or nobody is transmitting to this port, 
+     * transmit NULL frame. 
+     */
+    if (cport->tx_setting == PJMEDIA_PORT_MUTE || cport->sources==0) {
+
+        pjmedia_frame frame;
+
+        frame.type = PJMEDIA_FRAME_TYPE_NONE;
+        frame.buf = NULL;
+        frame.size = 0;
+
+        if (cport->port)
+            pjmedia_port_put_frame(cport->port, &frame);
+
+        return PJ_SUCCESS;
+
+    } else if (cport->tx_setting != PJMEDIA_PORT_ENABLE) {
+        return PJ_SUCCESS;
+    }
+
+    /* If there are sources in the mix buffer, convert the mixed samples
+     * to the mixed samples itself. This is possible because mixed sample
+     * is 32bit.
+     */
+    buf = (pj_int16_t*)cport->mix_buf;
+    for (j=0; j<conf->samples_per_frame; ++j) {
+        buf[j] = unsigned2pcm(cport->mix_buf[j] / cport->sources);
+    }
+
+    /* If port has the same clock_date and samples_per_frame settings as
+     * the conference bridge, transmit the frame as is.
+     */
+    if (cport->clock_rate == conf->clock_rate &&
+        cport->samples_per_frame == conf->samples_per_frame)
+    {
+        pjmedia_frame frame;
+
+        frame.type = PJMEDIA_FRAME_TYPE_AUDIO;
+        frame.buf = (pj_int16_t*)cport->mix_buf;
+        frame.size = conf->samples_per_frame * BYTES_PER_SAMPLE;
+        frame.timestamp.u64 = timestamp;
+
+        if (cport->port != NULL)
+            return pjmedia_port_put_frame(cport->port, &frame);
+        else
+            return PJ_SUCCESS;
+    }
+
+    /* If it has different clock_rate, must resample. */
+    if (cport->clock_rate != conf->clock_rate) {
+
+        unsigned dst_count;
+
+        pjmedia_resample_run( cport->tx_resample, buf, 
+                              cport->tx_buf + cport->tx_buf_count );
+
+        dst_count = (unsigned)(conf->samples_per_frame * 1.0 *
+                               cport->clock_rate / conf->clock_rate);
+        cport->tx_buf_count += dst_count;
+
+    } else {
+        /* Same clock rate.
+         * Just copy the samples to tx_buffer.
+         */
+        copy_samples( cport->tx_buf + cport->tx_buf_count,
+                      buf, conf->samples_per_frame );
+        cport->tx_buf_count += conf->samples_per_frame;
+    }
+
+    /* Transmit once we have enough frame in the tx_buf. */
+    if (cport->tx_buf_count >= cport->samples_per_frame) {
+        
+        pjmedia_frame frame;
+
+        frame.type = PJMEDIA_FRAME_TYPE_AUDIO;
+        frame.buf = cport->tx_buf;
+        frame.size = cport->samples_per_frame * BYTES_PER_SAMPLE;
+        frame.timestamp.u64 = timestamp;
+
+        if (cport->port)
+            return pjmedia_port_put_frame(cport->port, &frame);
+        else
+            return PJ_SUCCESS;
+    }
+
+    return PJ_SUCCESS;
+}
+
 
 /*
@@ -682 +990 @@
 {
     pjmedia_conf *conf = user_data;
-    pj_int16_t *output_buf = output;
     unsigned ci, cj, i, j;
     
@@ -695 +1002 @@
     for (i=0, ci=0; i<conf->max_ports && ci < conf->port_cnt; ++i) {
         struct conf_port *conf_port = conf->ports[i];
-        pj_uint32_t *sum_buf;
+        pj_uint32_t *mix_buf;
 
         /* Skip empty slot. */
@@ -704 +1011 @@
 
         conf_port->sources = 0;
-        sum_buf = conf_port->sum_buf;
+        mix_buf = conf_port->mix_buf;
 
         for (j=0; j<conf->samples_per_frame; ++j)
-            sum_buf[j] = 0;
+            mix_buf[j] = 0;
     }
 
     /* Get frames from all ports, and "mix" the signal 
-     * to sum_buf of all listeners of the port.
+     * to mix_buf of all listeners of the port.
      */
     for (i=0, ci=0; i<conf->max_ports && ci<conf->port_cnt; ++i) {
@@ -733 +1040 @@
          */
         if (i==0) {
-            pj_int16_t *rx_buf;
-
-            if (conf_port->rx_read == conf_port->rx_write) {
-                conf_port->rx_read = 
-                    (conf_port->rx_write+RX_BUF_COUNT-RX_BUF_COUNT/2) % 
+            pj_int16_t *snd_buf;
+
+            if (conf_port->snd_read_pos == conf_port->snd_write_pos) {
+                conf_port->snd_read_pos = 
+                    (conf_port->snd_write_pos+RX_BUF_COUNT-RX_BUF_COUNT/2) % 
                         RX_BUF_COUNT;
             }
@@ -752 +1059 @@
             }
 
-            rx_buf = conf_port->rx_buf[conf_port->rx_read];
+            snd_buf = conf_port->snd_buf[conf_port->snd_read_pos];
             for (j=0; j<conf->samples_per_frame; ++j) {
-                ((pj_int16_t*)output)[j] = rx_buf[j];
+                ((pj_int16_t*)output)[j] = snd_buf[j];
             }
-            conf_port->rx_read = (conf_port->rx_read+1) % RX_BUF_COUNT;
+            conf_port->snd_read_pos = (conf_port->snd_read_pos+1) % RX_BUF_COUNT;
 
         } else {
-            pjmedia_frame frame;
-
-            pj_memset(&frame, 0, sizeof(frame));
-            frame.buf = output;
-            frame.size = size;
-            pjmedia_port_get_frame(conf_port->port, &frame);
-
-           if (frame.type == PJMEDIA_FRAME_TYPE_NONE)
+
+            pj_status_t status;
+            pjmedia_frame_type frame_type;
+
+            status = read_port(conf, conf_port, output, 
+                               conf->samples_per_frame, &frame_type);
+            
+            if (status != PJ_SUCCESS) {
+                PJ_LOG(4,(THIS_FILE, "Port %.*s get_frame() returned %d. "
+                                     "Port is now disabled",
+                                     (int)conf_port->name.slen,
+                                     conf_port->name.ptr,
+                                     status));
+                conf_port->rx_setting = PJMEDIA_PORT_DISABLE;
                 continue;
+            }
         }
-
-        /* Skip (after receiving the frame) if this port is muted. */
-        if (conf_port->rx_setting == PJMEDIA_PORT_MUTE)
-            continue;
 
         /* Also skip if this port doesn't have listeners. */
@@ -794 +1104 @@
         {
             struct conf_port *listener = conf->ports[j];
-            pj_uint32_t *sum_buf;
+            pj_uint32_t *mix_buf;
             unsigned k;
 
@@ -811 +1121 @@
 
             /* Mix the buffer */
-            sum_buf = listener->sum_buf;
+            mix_buf = listener->mix_buf;
             for (k=0; k<conf->samples_per_frame; ++k)
-                sum_buf[k] += (conf->uns_buf[k] * level);
+                mix_buf[k] += (conf->uns_buf[k] * level);
 
             listener->sources += level;
@@ -822 +1132 @@
     for (i=0, ci=0; i<conf->max_ports && ci<conf->port_cnt; ++i) {
         struct conf_port *conf_port = conf->ports[i];
-        pjmedia_frame frame;
-        pj_int16_t *target_buf;
+        pj_status_t status;
 
         if (!conf_port)
@@ -830 +1139 @@
         ++ci;
 
-        if (conf_port->tx_setting == PJMEDIA_PORT_MUTE) {
-            frame.type = PJMEDIA_FRAME_TYPE_NONE;
-            frame.buf = NULL;
-            frame.size = 0;
-
-            if (conf_port->port)
-                pjmedia_port_put_frame(conf_port->port, &frame);
-
-            continue;
-
-        } else if (conf_port->tx_setting != PJMEDIA_PORT_ENABLE) {
+        status = write_port( conf, conf_port, timestamp);
+        if (status != PJ_SUCCESS) {
+            PJ_LOG(4,(THIS_FILE, "Port %.*s put_frame() returned %d. "
+                                 "Port is now disabled",
+                                 (int)conf_port->name.slen,
+                                 conf_port->name.ptr,
+                                 status));
+            conf_port->tx_setting = PJMEDIA_PORT_DISABLE;
             continue;
         }
-
-        target_buf = (conf_port->cur_tx_buf==conf_port->tx_buf1?
-                        conf_port->tx_buf2 : conf_port->tx_buf1);
-
-        if (conf_port->sources) {
-            for (j=0; j<conf->samples_per_frame; ++j) {
-                target_buf[j] = unsigned2pcm(conf_port->sum_buf[j] / 
-                                             conf_port->sources);
-            }
-        }
-
-        /* Switch buffer. */
-        conf_port->cur_tx_buf = target_buf;
-
-        pj_memset(&frame, 0, sizeof(frame));
-        if (conf_port->sources) {
-
-            pj_bool_t is_silence = PJ_FALSE;
-
-            /* Apply silence detection. */
-#if 0
-            is_silence = pjmedia_silence_det_detect(conf_port->vad,
-                                                    target_buf,
-                                                    conf->samples_per_frame,
-                                                    NULL);
-#endif
-            frame.type = is_silence ? PJMEDIA_FRAME_TYPE_NONE : 
-                                      PJMEDIA_FRAME_TYPE_AUDIO;
-
-        } else
-            frame.type = PJMEDIA_FRAME_TYPE_NONE;
-
-        frame.buf = conf_port->cur_tx_buf;
-        frame.size = conf->samples_per_frame * conf->bits_per_sample / 8;
-        frame.timestamp.u64 = timestamp;
-
-        if (conf_port->port)
-            pjmedia_port_put_frame(conf_port->port, &frame);
-
     }
 
     /* Return sound playback frame. */
     if (conf->ports[0]->sources) {
-        for (j=0; j<conf->samples_per_frame; ++j)
-            output_buf[j] = conf->ports[0]->cur_tx_buf[j];
+        copy_samples( output, (pj_int16_t*)conf->ports[0]->mix_buf, 
+                      conf->samples_per_frame);
     } else {
-        for (j=0; j<conf->samples_per_frame; ++j)
-            output_buf[j] = 0;
+        zero_samples( output, conf->samples_per_frame ); 
     }
 
@@ -909 +1175 @@
     pjmedia_conf *conf = user_data;
     struct conf_port *snd_port = conf->ports[0];
-    pj_int16_t *target_rx_buf;
+    pj_int16_t *target_snd_buf;
     unsigned i;
 
@@ -932 +1198 @@
 
     /* Determine which rx_buffer to fill in */
-    target_rx_buf = snd_port->rx_buf[snd_port->rx_write];
+    target_snd_buf = snd_port->snd_buf[snd_port->snd_write_pos];
     
     /* Copy samples from audio device to target rx_buffer */
     for (i=0; i<conf->samples_per_frame; ++i) {
-        target_rx_buf[i] = ((pj_int16_t*)input)[i];
+        target_snd_buf[i] = ((pj_int16_t*)input)[i];
     }
 
     /* Switch buffer */
-    snd_port->rx_write = (snd_port->rx_write+1)%RX_BUF_COUNT;
-
-
-    /* Time for all ports (except sound port) to transmit frames */
-    /*
-    for (i=1; i<conf->max_ports; ++i) {
-        struct conf_port *conf_port = conf->ports[i];
-        pjmedia_frame frame;
-
-        if (!conf_port)
-            continue;
-
-    }
-    */
-    
-    return PJ_SUCCESS;
-}
-
+    snd_port->snd_write_pos = (snd_port->snd_write_pos+1)%RX_BUF_COUNT;
+
+
+    return PJ_SUCCESS;
+}
+

pjproject/trunk/pjmedia/src/pjmedia/file_port.c

@@ -28 +28 @@
 
 #define SIGNATURE       ('F'<<24|'I'<<16|'L'<<8|'E')
-#define BUF_SIZE        (320*10)
 
 struct file_port
@@ -60 +59 @@
     port->base.info.pt = 0xFF;
     port->base.info.encoding_name = pj_str("pcm");
+
+    port->base.put_frame = &file_put_frame;
+    port->base.get_frame = &file_get_frame;
+    port->base.on_destroy = &file_on_destroy;
+
+
+    /* Put in default values.
+     * These will be overriden once the file is read.
+     */
     port->base.info.sample_rate = 8000;
     port->base.info.bits_per_sample = 16;
     port->base.info.samples_per_frame = 160;
     port->base.info.bytes_per_frame = 320;
-
-    port->base.put_frame = &file_put_frame;
-    port->base.get_frame = &file_get_frame;
-    port->base.on_destroy = &file_on_destroy;
 
     return port;
@@ -137 +141 @@
     if (wave_hdr.fmt_hdr.fmt_tag != 1 ||
         wave_hdr.fmt_hdr.nchan != 1 ||
-        wave_hdr.fmt_hdr.sample_rate != 8000 ||
-        wave_hdr.fmt_hdr.bytes_per_sec != 16000 ||
-        wave_hdr.fmt_hdr.block_align != 2 ||
-        wave_hdr.fmt_hdr.bits_per_sample != 16)
+        wave_hdr.fmt_hdr.bits_per_sample != 16 ||
+        wave_hdr.fmt_hdr.block_align != 2)
     {
         pj_file_close(fd);
@@ -167 +169 @@
     /* Initialize */
     file_port->base.user_data = user_data;
+
+    /* Update port info. */
+    file_port->base.info.sample_rate = wave_hdr.fmt_hdr.sample_rate;
+    file_port->base.info.bits_per_sample = wave_hdr.fmt_hdr.bits_per_sample;
+    file_port->base.info.samples_per_frame = file_port->base.info.sample_rate *
+                                             20 / 1000;
+    file_port->base.info.bytes_per_frame = 
+        file_port->base.info.samples_per_frame * 
+        file_port->base.info.bits_per_sample / 8;
+
 
     /* For this version, we only support reading the whole
@@ -223 +235 @@
 {
     struct file_port *port = (struct file_port*)this_port;
-
+    unsigned frame_size;
     pj_assert(port->base.info.signature == SIGNATURE);
+
+    frame_size = port->base.info.bytes_per_frame;
 
     /* Copy frame from buffer. */
     frame->type = PJMEDIA_FRAME_TYPE_AUDIO;
-    frame->size = 320;
+    frame->size = frame_size;
     frame->timestamp.u64 = 0;
 
-    if (port->readpos + 320 <= port->buf + port->bufsize) {
-        pj_memcpy(frame->buf, port->readpos, 320);
-        port->readpos += 320;
+    if (port->readpos + frame_size <= port->buf + port->bufsize) {
+        pj_memcpy(frame->buf, port->readpos, frame_size);
+        port->readpos += frame_size;
         if (port->readpos == port->buf + port->bufsize)
             port->readpos = port->buf;
@@ -241 +255 @@
         endread = (port->buf+port->bufsize) - port->readpos;
         pj_memcpy(frame->buf, port->readpos, endread);
-        pj_memcpy(((char*)frame->buf)+endread, port->buf, 320-endread);
-        port->readpos = port->buf + (320-endread);
+        pj_memcpy(((char*)frame->buf)+endread, port->buf, frame_size-endread);
+        port->readpos = port->buf + (frame_size - endread);
     }
 
@@ -249 +263 @@
 
 /*
- *
+ * Destroy port.
  */
 static pj_status_t file_on_destroy(pjmedia_port *this_port)

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

@@ -385 +385 @@
             }
         }
-        printf("Port #%02d %20.*s  transmitting to: %s\n", 
+        printf("Port #%02d[%2dKHz/%dms] %20.*s  transmitting to: %s\n", 
                port_info->slot, 
+               port_info->clock_rate/1000,
+               port_info->samples_per_frame * 1000 / port_info->clock_rate,
                (int)port_info->name.slen, 
                port_info->name.ptr,

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

@@ -178 +178 @@
     int              start_rtp_port;/**< Start of RTP port to try.      */
     pjmedia_endpt   *med_endpt;     /**< Media endpoint.                */
+    unsigned         clock_rate;    /**< Internal clock rate.           */
     pjmedia_conf    *mconf;         /**< Media conference.              */
     pj_bool_t        null_audio;    /**< Null audio flag.               */

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

@@ -73 +73 @@
     pjsua.stun_port1 = pjsua.stun_port2 = 0;
 
+    /* Default: sampling rate is 8000 */
+    pjsua.clock_rate = 8000;
+
     /* Init accounts: */
     pjsua.acc_cnt = 1;
@@ -619 +622 @@
     status = pjmedia_conf_create(pjsua.pool, 
                                  pjsua.max_calls+PJSUA_CONF_MORE_PORTS, 
-                                 8000, 160, 16, &pjsua.mconf);
+                                 pjsua.clock_rate, 
+                                 pjsua.clock_rate * 20 / 1000, 16, 
+                                 &pjsua.mconf);
     if (status != PJ_SUCCESS) {
         pj_caching_pool_destroy(&pjsua.cp);

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

@@ -84 +84 @@
     puts("");
     puts("Media Options:");
+    puts("  --wb                Enable wideband codecs (16KHz)");
+    puts("  --uwb               Enable ultra-wideband codecs (32KHz)");
     puts("  --null-audio        Use NULL audio device");
     puts("  --play-file=file    Play WAV file in conference bridge");
@@ -219 +221 @@
            OPT_AUTO_ANSWER, OPT_AUTO_HANGUP, OPT_AUTO_PLAY, OPT_AUTO_LOOP,
            OPT_AUTO_CONF,
-           OPT_PLAY_FILE, OPT_RTP_PORT,
+           OPT_PLAY_FILE, OPT_WB, OPT_UWB, OPT_RTP_PORT,
            OPT_NEXT_ACCOUNT, OPT_NEXT_CRED, OPT_MAX_CALLS,
     };
@@ -229 +231 @@
         { "help",       0, 0, OPT_HELP},
         { "version",    0, 0, OPT_VERSION},
+        { "wb",         0, 0, OPT_WB},
+        { "uwb",        0, 0, OPT_UWB},
         { "null-audio", 0, 0, OPT_NULL_AUDIO},
         { "local-port", 1, 0, OPT_LOCAL_PORT},
@@ -328 +332 @@
             break;
 
+        case OPT_WB:
+            pjsua.clock_rate = 16000;
+            break;
+
+        case OPT_UWB:
+            pjsua.clock_rate = 32000;
+            break;
+
         case OPT_LOCAL_PORT:   /* local-port */
             lval = pj_strtoul(pj_cstr(&tmp, optarg));