Changeset 203 for pjproject/trunk/pjmedia/include/pjmedia/vad.h

Timestamp:

Feb 20, 2006 1:28:25 AM (18 years ago)

Author:

bennylp

Message:

Added conference bridge prototype

File:

• pjproject/trunk/pjmedia/include/pjmedia/vad.h (modified) (4 diffs)

pjproject/trunk/pjmedia/include/pjmedia/vad.h

@@ -27 +27 @@
 #include <pjmedia/types.h>
 
+PJ_BEGIN_DECL
+
 
 /**
- * Opaque data type for pjmedia vad.
+ * @see pjmedia_vad
  */
 typedef struct pjmedia_vad  pjmedia_vad;
@@ -49 +51 @@
 
 /**
+ * Set the vad to operate in adaptive mode.
+ *
+ * @param vad               The vad
+ * @param frame_size Number of samplse per frame.
+ *
+ * @return                  PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_vad_set_adaptive( pjmedia_vad *vad,
+                                               unsigned frame_size);
+
+
+/**
+ * Set the vad to operate in fixed threshold mode.
+ *
+ * @param vad               The vad
+ * @param frame_size Number of samplse per frame.
+ * @param threshold         The silence threshold.
+ *
+ * @return                  PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_vad_set_fixed( pjmedia_vad *vad,
+                                            unsigned frame_size,
+                                            unsigned threshold );
+
+/**
+ * Disable the vad.
+ *
+ * @param vad           The vad
+ *
+ * @return              PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_vad_disable( pjmedia_vad *vad );
+
+
+/**
  * Calculate average signal level for the given samples.
  *
@@ -57 +94 @@
  *                      divided by number of samples.
  */
-PJ_DECL(pj_uint32_t) pjmedia_vad_calc_avg_signal_level( pj_int16_t samples[],
-                                                        pj_size_t count );
+PJ_DECL(pj_int32_t) pjmedia_vad_calc_avg_signal( const pj_int16_t samples[],
+                                                 pj_size_t count );
 
 
@@ -67 +104 @@
  * @param samples       Pointer to 16-bit PCM input samples.
  * @param count         Number of samples in the input.
- * @param p_silence     Pointer to receive the silence detection result.
- *                      Non-zero value indicates that that input is considered
- *                      as silence.
+ * @param p_level       Optional pointer to receive average signal level
+ *                      of the input samples.
  *
  * @return              PJ_SUCCESS on success.
  */
-PJ_DECL(pj_status_t) pjmedia_vad_detect_silence( pjmedia_vad *vad,
-                                                 pj_int16_t samples[],
-                                                 pj_size_t count,
-                                                 pj_bool_t *p_silence);
+PJ_DECL(pj_bool_t) pjmedia_vad_detect_silence( pjmedia_vad *vad,
+                                               const pj_int16_t samples[],
+                                               pj_size_t count,
+                                               pj_int32_t *p_level);
 
 
+PJ_END_DECL
 
 #endif  /* __PJMEDIA_VAD_H__ */