Changeset 322

Timestamp:

Mar 16, 2006 7:03:07 PM (18 years ago)

Author:

bennylp

Message:

Support for stereo audio (or N audio channels, for that matter)

Location:

pjproject/trunk

Files:

• pjmedia/include/pjmedia/conference.h (modified) (2 diffs)
• pjmedia/include/pjmedia/null_port.h (modified) (2 diffs)
• pjmedia/src/pjmedia/conference.c (modified) (3 diffs)
• pjmedia/src/pjmedia/file_port.c (modified) (2 diffs)
• pjmedia/src/pjmedia/null_port.c (modified) (2 diffs)
• pjmedia/src/pjmedia/stream.c (modified) (1 diff)
• pjsip/src/pjsua-lib/pjsua_core.c (modified) (2 diffs)

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

@@ -76 +76 @@
  *                          is also used to set the sampling rate of the
  *                          sound device.
+ * @param channel_count     Number of channels in the PCM stream. Normally
+ *                          the value will be 1 for mono, but application may
+ *                          specify a value of 2 for stereo. Note that all
+ *                          ports that will be connected to the bridge MUST 
+ *                          have the same number of channels as the bridge.
  * @param samples_per_frame Set the number of samples per frame. This value
  *                          is also used to set the sound device.
@@ -91 +96 @@
                                           unsigned max_slots,
                                           unsigned sampling_rate,
+                                          unsigned channel_count,
                                           unsigned samples_per_frame,
                                           unsigned bits_per_sample,

pjproject/trunk/pjmedia/include/pjmedia/null_port.h

@@ -34 +34 @@
  *
  * @param sampling_rate         Sampling rate of the port.
+ * @param channel_count         Number of channels.
  * @param samples_per_frame     Number of samples per frame.
  * @param bits_per_sample       Number of bits per sample.
@@ -42 +43 @@
 PJ_DECL(pj_status_t) pjmedia_null_port_create( pj_pool_t *pool,
                                                unsigned sampling_rate,
+                                               unsigned channel_count,
                                                unsigned samples_per_frame,
                                                unsigned bits_per_sample,

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

@@ -137 +137 @@
     struct conf_port    **ports;        /**< Array of ports.                */
     pj_uint16_t          *uns_buf;      /**< Buf for unsigned conversion    */
-    unsigned              clock_rate;   /**< Sampling rate.         */
+    unsigned              clock_rate;   /**< Sampling rate.                 */
+    unsigned              channel_count;/**< Number of channels (1=mono).   */
     unsigned              samples_per_frame;    /**< Samples per frame.     */
     unsigned              bits_per_sample;      /**< Bits per sample.       */
@@ -323 +324 @@
                                          unsigned max_ports,
                                          unsigned clock_rate,
+                                         unsigned channel_count,
                                          unsigned samples_per_frame,
                                          unsigned bits_per_sample,
@@ -493 +495 @@
 
     PJ_ASSERT_RETURN(conf && pool && strm_port && port_name, PJ_EINVAL);
+
+    /* For this version of PJMEDIA, port MUST have the same number of
+     * PCM channels.
+     */
+    if (strm_port->info.channel_count != conf->channel_count) {
+        pj_assert(!"Number of channels mismatch");
+        return PJMEDIA_ENCCHANNEL;
+    }
 
     pj_mutex_lock(conf->mutex);

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

@@ -201 +201 @@
 
     if (wave_hdr.fmt_hdr.fmt_tag != 1 ||
-        wave_hdr.fmt_hdr.nchan != 1 ||
         wave_hdr.fmt_hdr.bits_per_sample != 16 ||
         wave_hdr.fmt_hdr.block_align != 2)
@@ -225 +224 @@
 
     /* Update port info. */
+    fport->base.info.channel_count = wave_hdr.fmt_hdr.nchan;
     fport->base.info.sample_rate = wave_hdr.fmt_hdr.sample_rate;
     fport->base.info.bits_per_sample = wave_hdr.fmt_hdr.bits_per_sample;

pjproject/trunk/pjmedia/src/pjmedia/null_port.c

@@ -33 +33 @@
 PJ_DEF(pj_status_t) pjmedia_null_port_create( pj_pool_t *pool,
                                               unsigned sampling_rate,
+                                              unsigned channel_count,
                                               unsigned samples_per_frame,
                                               unsigned bits_per_sample,
@@ -53 +54 @@
     port->info.sample_rate = sampling_rate;
     port->info.samples_per_frame = samples_per_frame;
+    port->info.channel_count = channel_count;
     port->info.signature = 0x2411;
     port->info.type = PJMEDIA_TYPE_AUDIO;

pjproject/trunk/pjmedia/src/pjmedia/stream.c

@@ -660 +660 @@
     stream->port.info.pt = info->fmt.pt;
     pj_strdup(pool, &stream->port.info.encoding_name, &info->fmt.encoding_name);
+    stream->port.info.channel_count = 1;
     stream->port.info.sample_rate = info->fmt.sample_rate;
     stream->port.user_data = stream;

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

@@ -761 +761 @@
                                  pjsua.max_calls+PJSUA_CONF_MORE_PORTS, 
                                  pjsua.clock_rate, 
+                                 1, /* mono */
                                  pjsua.clock_rate * 20 / 1000, 16, 
                                  options,
@@ -774 +775 @@
     /* Add NULL port to the bridge. */
     status = pjmedia_null_port_create( pjsua.pool, pjsua.clock_rate, 
+                                       1, /* mono */
                                        pjsua.clock_rate * 20 / 1000, 16,
                                        &pjsua.null_port);