initial commit

2021-10-29 14:41:03 -04:00
commit 636959b37b
@@ -0,0 +1,21 @@
+#Modify this to point to the PJSIP location.
+PJBASE=../../..
+
+include $(PJBASE)/build.mak
+
+CC      = $(APP_CC)
+LDFLAGS = $(APP_LDFLAGS)
+LDLIBS  = $(APP_LDLIBS)
+CFLAGS  = $(APP_CFLAGS)
+CPPFLAGS= $(APP_CXXFLAGS)
+
+# If your application is in a file named myapp.cpp or myapp.c
+# # this is the line you will need to build the binary.
+# all: myapp
+#
+cmp_wav: cmp_wav.c
+	$(CC) -o $@ $< $(CPPFLAGS) $(LDFLAGS) $(LDLIBS)
+
+clean:
+	rm -f cmp_wav.o cmp_wav
+
@@ -0,0 +1,265 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#include <pjmedia.h>
+#include <pjlib-util.h>
+#include <pjlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define app_perror(a,b,c) printf("%s: %s (%d)", a, b, c)
+
+
+/* For logging purpose. */
+#define THIS_FILE   "cmp_wav.c"
+#define BYTES_PER_FRAME	    512
+
+static const char *desc = 
+" FILE		    						    \n"
+"		    						    \n"
+"  cmp_wav.c	    						    \n"
+"		    						    \n"
+" PURPOSE	    						    \n"
+"		    						    \n"
+"  Compare two WAV files.					    \n"
+"		    						    \n"
+" USAGE		    						    \n"
+"		    						    \n"
+"  cmp_wav ORIGINAL_WAV DEGRADED_WAV [TIME] [DETAIL]		    \n"
+"		    						    \n"
+"  ORIGINAL_WAV	    The original WAV file as reference.		    \n"
+"  DEGRADED_WAV	    The degraded WAV file.			    \n"
+"  TIME	            Compare only some part of the files		    \n"
+"                   (in ms, since the beginning).		    \n"
+"                   Specify 0 (default) to compare the whole time.  \n"
+"  DETAIL           Show detail result, 1 or 0 (default=0, means no)\n"
+"		    						    \n"
+"  Both files must have same clock rate and must contain	    \n"
+"  uncompressed (i.e. 16bit) PCM.				    \n";
+
+
+/* Sum of multiplication of corresponding samples in buf1 & buf2 */
+double sum_mult_sig(pj_int16_t *buf1, pj_int16_t *buf2, unsigned nsamples)
+{
+    double mag = 0;
+
+    while (nsamples--)
+	mag += (double)*buf1++ * (double)*buf2++;
+
+    return mag;
+}
+
+
+/*
+ * main()
+ */
+int main(int argc, char *argv[])
+{
+    pj_caching_pool cp;
+    pjmedia_endpt *med_endpt;
+    pj_pool_t *pool;
+    pjmedia_port *file_ori_port;
+    pjmedia_port *file_deg_port;
+    pj_status_t status;
+    unsigned first_nsamples = 0;
+    unsigned samples_compared = 0;
+
+    char buf1[BYTES_PER_FRAME];
+    char buf2[BYTES_PER_FRAME];
+
+    double ref_mag = 0;
+    double deg_mag = 0;
+    double mix_mag = 0;
+
+    int detail = 0;
+    int res_deg, res_mix, res_overall;
+
+    if (argc < 3) {
+    	puts("Error: original & degraded filename required");
+	puts(desc);
+	return 1;
+    }
+
+    /* Set log level. */
+    pj_log_set_level(3);
+
+    /* Must init PJLIB first: */
+    status = pj_init();
+    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
+
+    /* Must create a pool factory before we can allocate any memory. */
+    pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0);
+
+    /* 
+     * Initialize media endpoint.
+     * This will implicitly initialize PJMEDIA too.
+     */
+    status = pjmedia_endpt_create(&cp.factory, NULL, 1, &med_endpt);
+    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
+
+    /* Create memory pool for our file player */
+    pool = pj_pool_create( &cp.factory,	    /* pool factory	    */
+			   "wav",	    /* pool name.	    */
+			   4000,	    /* init size	    */
+			   4000,	    /* increment size	    */
+			   NULL		    /* callback on error    */
+			   );
+
+    /* Create file media port from the original WAV file */
+    status = pjmedia_wav_player_port_create(  pool,	/* memory pool	    */
+					      argv[1],	/* file to play	    */
+					      40,	/* ptime.	    */
+					      PJMEDIA_FILE_NO_LOOP,	/* flags	    */
+					      0,	/* default buffer   */
+					      &file_ori_port/* returned port    */
+					      );
+    if (status != PJ_SUCCESS) {
+	app_perror(THIS_FILE, "Unable to use WAV file", status);
+	return 1;
+    }
+
+    /* Create file media port from the degraded WAV file */
+    status = pjmedia_wav_player_port_create(  pool,	/* memory pool	    */
+					      argv[2],	/* file to play	    */
+					      40,	/* ptime.	    */
+					      PJMEDIA_FILE_NO_LOOP,	/* flags	    */
+					      0,	/* default buffer   */
+					      &file_deg_port/* returned port    */
+					      );
+    if (status != PJ_SUCCESS) {
+	app_perror(THIS_FILE, "Unable to use WAV file", status);
+	return 1;
+    }
+
+    if (file_ori_port->info.fmt.det.aud.clock_rate !=
+	file_deg_port->info.fmt.det.aud.clock_rate)
+    {
+	app_perror(THIS_FILE, "Clock rates must be same.", PJ_EINVAL);
+	return 1;
+    }
+
+    if (argc > 3)
+	first_nsamples = atoi(argv[3]) *
+			 file_ori_port->info.fmt.det.aud.clock_rate / 1000;
+
+    if (argc > 4)
+	detail = atoi(argv[4]);
+
+    while (1) {
+	pjmedia_frame f1, f2;
+
+	f1.buf = buf1;
+	f1.size = BYTES_PER_FRAME;
+	f2.buf = buf2;
+	f2.size = BYTES_PER_FRAME;
+
+	status = pjmedia_port_get_frame(file_ori_port, &f1);
+	if (status == PJ_EEOF) {
+	    break;
+	} else if (status != PJ_SUCCESS) {
+	    app_perror(THIS_FILE, "Error occured while reading file", status);
+	    break;
+	}
+	status = pjmedia_port_get_frame(file_deg_port, &f2);
+	if (status == PJ_EEOF) {
+	    break;
+	} else if (status != PJ_SUCCESS) {
+	    app_perror(THIS_FILE, "Error occured while reading file", status);
+	    break;
+	}
+
+	/* Calculate magnitudes */
+	ref_mag += sum_mult_sig(f1.buf, f1.buf, BYTES_PER_FRAME >> 1);
+	deg_mag += sum_mult_sig(f2.buf, f2.buf, BYTES_PER_FRAME >> 1);
+	mix_mag += sum_mult_sig(f1.buf, f2.buf, BYTES_PER_FRAME >> 1);
+
+	samples_compared += BYTES_PER_FRAME >> 1;
+	if (first_nsamples && samples_compared >= first_nsamples)
+	    break;
+    }
+
+    /* Degraded magnitude compared to reference magnitude 
+     */
+    res_deg = (int) (deg_mag / ref_mag * 100.0);
+    if (res_deg < 0)
+	res_deg = -1;
+    else if (res_deg >= 81)
+	res_deg = 9;
+    else
+	res_deg = pj_isqrt(res_deg);
+
+    /* Mixed magnitude (don't know what this is actually :D) compared to 
+     * reference magnitude 
+     */
+    res_mix = (int) (mix_mag / ref_mag * 100.0);
+    if (res_mix < 0)
+	res_mix = -1;
+    else if (res_mix >= 81)
+	res_mix = 9;
+    else
+	res_mix = pj_isqrt(res_mix);
+
+    /* Overall score.
+     * If mixed score is -1, then overall score should be -1 as well.
+     * Apply no weighting (1:1) for now.
+     */
+    if (res_mix == -1)
+	res_overall = -1;
+    else
+	res_overall = (res_mix*1 + res_deg*1) / 2;
+
+    if (detail) {
+	printf("Reference = %.0f\n", ref_mag);
+	printf("Degraded  = %.0f\n", deg_mag);
+	printf("Mixed     = %.0f\n", mix_mag);
+
+	printf("\n");
+
+	printf("Score 1   = %d\n", res_deg);
+	printf("Score 2   = %d\n", res_mix);
+
+	printf("\n");
+    }
+
+    printf("Overall   = %d\n", res_overall);
+
+    /* Destroy file port */
+    status = pjmedia_port_destroy( file_ori_port );
+    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
+
+    status = pjmedia_port_destroy( file_deg_port );
+    PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
+
+    /* Release application pool */
+    pj_pool_release( pool );
+
+    /* Destroy media endpoint. */
+    pjmedia_endpt_destroy( med_endpt );
+
+    /* Destroy pool factory */
+    pj_caching_pool_destroy( &cp );
+
+    /* Shutdown PJLIB */
+    pj_shutdown();
+
+
+    /* Done. */
+    return 0;
+}
+
@@ -0,0 +1,171 @@
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