Changeset 1941 for pjproject/trunk

Timestamp:

Apr 23, 2008 4:07:37 PM (17 years ago)

Author:

bennylp

Message:

More ticket #497: added configuration to disable WSOLA and set default to disabled on WinCE and Symbian

Location:

pjproject/trunk

Files:

• pjlib/include/pj/config_site_sample.h (modified) (2 diffs)
• pjmedia/include/pjmedia/config.h (modified) (1 diff)
• pjmedia/src/pjmedia/wsola.c (modified) (2 diffs)

pjproject/trunk/pjlib/include/pj/config_site_sample.h

@@ -27 +27 @@
 #   undef PJMEDIA_RESAMPLE_IMP
 #   define PJMEDIA_RESAMPLE_IMP         PJMEDIA_RESAMPLE_LIBRESAMPLE
+#   define PJMEDIA_WSOLA_IMP            PJMEDIA_WSOLA_IMP_NULL
 #endif
 
@@ -50 +51 @@
 #   define PJMEDIA_RESAMPLE_IMP         PJMEDIA_RESAMPLE_NONE
 #   define PJMEDIA_HAS_SPEEX_AEC        0
+#   define PJMEDIA_WSOLA_IMP            PJMEDIA_WSOLA_IMP_NULL
 
     /* Disable all codecs but G.711 and GSM, for now */

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

@@ -104 +104 @@
 #ifndef PJMEDIA_SOUND_USE_DELAYBUF
 #   define PJMEDIA_SOUND_USE_DELAYBUF       0
+#endif
+
+
+/*
+ * Types of WSOLA backend algorithm.
+ */
+
+/**
+ * This denotes implementation of WSOLA using null algorithm. Expansion
+ * will generate zero frames, and compression will just discard some
+ * samples from the input.
+ *
+ * This type of implementation may be used as it requires the least
+ * processing power.
+ */
+#define PJMEDIA_WSOLA_IMP_NULL              0
+
+/**
+ * This denotes implementation of WSOLA using fixed or floating point WSOLA
+ * algorithm. This implementation provides the best quality of the result,
+ * at the expense of one frame delay and intensive processing power 
+ * requirement.
+ */
+#define PJMEDIA_WSOLA_IMP_WSOLA             1
+
+
+/**
+ * Specify type of Waveform based Similarity Overlap and Add (WSOLA) backend
+ * implementation to be used. WSOLA is an algorithm to expand and/or compress 
+ * audio frames without changing the pitch, and used by the delaybuf and as PLC
+ * backend algorithm.
+ *
+ * Default is PJMEDIA_WSOLA_IMP_WSOLA
+ */
+#ifndef PJMEDIA_WSOLA_IMP
+#   define PJMEDIA_WSOLA_IMP                PJMEDIA_WSOLA_IMP_WSOLA
 #endif
 

pjproject/trunk/pjmedia/src/pjmedia/wsola.c

@@ -23 +23 @@
 #include <pj/pool.h>
 
+/*
+ * This file contains implementation of WSOLA using PJMEDIA_WSOLA_IMP_WSOLA
+ * or PJMEDIA_WSOLA_IMP_NULL
+ */
 #define THIS_FILE   "wsola.c"
 
-//#undef PJ_HAS_FLOATING_POINT
+
+#if PJMEDIA_WSOLA_IMP==PJMEDIA_WSOLA_IMP_WSOLA
+/*
+ * WSOLA implementation using WSOLA
+ */
 
 /* History size, in percentage of samples_per_frame */
@@ -721 +729 @@
 
 
+#elif PJMEDIA_WSOLA_IMP==PJMEDIA_WSOLA_IMP_NULL
+/*
+ * WSOLA implementation using NULL
+ */
+
+struct pjmedia_wsola
+{
+    unsigned samples_per_frame;
+};
+
+
+PJ_DEF(pj_status_t) pjmedia_wsola_create( pj_pool_t *pool, 
+                                          unsigned clock_rate,
+                                          unsigned samples_per_frame,
+                                          unsigned channel_count,
+                                          unsigned options,
+                                          pjmedia_wsola **p_wsola)
+{
+    pjmedia_wsola *wsola;
+
+    wsola = PJ_POOL_ZALLOC_T(pool, struct pjmedia_wsola);
+    wsola->samples_per_frame = samples_per_frame;
+
+    PJ_UNUSED_ARG(clock_rate);
+    PJ_UNUSED_ARG(channel_count);
+    PJ_UNUSED_ARG(options);
+
+    *p_wsola = wsola;
+
+    return PJ_SUCCESS;
+}
+
+
+PJ_DEF(pj_status_t) pjmedia_wsola_destroy(pjmedia_wsola *wsola)
+{
+    PJ_UNUSED_ARG(wsola);
+    return PJ_SUCCESS;
+}
+
+
+PJ_DEF(pj_status_t) pjmedia_wsola_reset( pjmedia_wsola *wsola,
+                                         unsigned options)
+{
+    PJ_UNUSED_ARG(wsola);
+    PJ_UNUSED_ARG(options);
+
+    return PJ_SUCCESS;
+}
+
+
+PJ_DEF(pj_status_t) pjmedia_wsola_save( pjmedia_wsola *wsola, 
+                                        short frm[], 
+                                        pj_bool_t prev_lost)
+{
+    PJ_UNUSED_ARG(wsola);
+    PJ_UNUSED_ARG(frm);
+    PJ_UNUSED_ARG(prev_lost);
+
+    return PJ_SUCCESS;
+}
+
+
+PJ_DEF(pj_status_t) pjmedia_wsola_generate( pjmedia_wsola *wsola, 
+                                            short frm[])
+{
+    pjmedia_zero_samples(frm, wsola->samples_per_frame);
+    return PJ_SUCCESS;
+}
+
+
+PJ_DEF(pj_status_t) pjmedia_wsola_discard( pjmedia_wsola *wsola, 
+                                           short buf1[],
+                                           unsigned buf1_cnt, 
+                                           short buf2[],
+                                           unsigned buf2_cnt,
+                                           unsigned *del_cnt)
+{
+    pj_assert(buf1_cnt + buf2_cnt >= wsola->samples_per_frame);
+
+    PJ_UNUSED_ARG(buf1);
+    PJ_UNUSED_ARG(buf1_cnt);
+    PJ_UNUSED_ARG(buf2);
+    PJ_UNUSED_ARG(buf2_cnt);
+
+    *del_cnt = wsola->samples_per_frame;
+
+    return PJ_SUCCESS;
+}
+
+
+#endif  /* #if PJMEDIA_WSOLA_IMP.. */
+
+