Changeset 5717 for pjproject/trunk/pjsip/include/pjsua2/media.hpp

Timestamp:

Dec 19, 2017 1:45:37 AM (6 years ago)

Author:

nanang

Message:

Close #2077: New PJSUA & PJSUA2 APIs for instantiating extra audio device.

File:

• pjproject/trunk/pjsip/include/pjsua2/media.hpp (modified) (1 diff)

pjproject/trunk/pjsip/include/pjsua2/media.hpp

@@ -1350 +1350 @@
 
 
+/**
+ * Extra audio device. This class allows application to have multiple
+ * sound device instances active concurrently. Application may also use
+ * this class to improve media clock. Normally media clock is driven by
+ * sound device in master port, but unfortunately some sound devices may
+ * produce jittery clock. To improve media clock, application can install
+ * Null Sound Device (i.e: using AudDevManager::setNullDev()), which will
+ * act as a master port, and install the sound device as extra sound device.
+ * Note that extra sound device will not have auto-close upon idle feature.
+ */
+class ExtraAudioDevice : public AudioMedia
+{
+public:
+    /**
+     * Constructor
+     *
+     * @param playdev           Playback device ID.
+     * @param recdev            Record device ID.
+     */
+    ExtraAudioDevice(int playdev, int recdev);
+
+    /**
+     * Destructor
+     */
+    virtual ~ExtraAudioDevice();
+
+    /**
+     * Open the audio device using format (e.g.: clock rate, channel count,
+     * samples per frame) matched to the conference bridge's format.
+     */
+    void open();
+
+    /**
+     * Close the audio device.
+     */
+    void close();
+
+    /**
+     * Is the extra audio device opened?
+     *
+     * @return                  'true' if it is opened.
+     */
+    bool isOpened();
+
+protected:
+    int playDev;
+    int recDev;
+    void *ext_snd_dev;
+};
+
+
 /*************************************************************************
 * Video media