Added level.c to samples collection
git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@344 74dad513-b988-da41-8d7b-12977e46ad98
This commit is contained in:
Benny Prijono
parent
fa137ca7cf
commit
c9446cbb55
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@ -38,7 +38,8 @@ BINDIR = ..\bin\samples
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SAMPLES = $(BINDIR)\simpleua.exe $(BINDIR)\playfile.exe $(BINDIR)\playsine.exe \
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$(BINDIR)\confsample.exe $(BINDIR)\sndinfo.exe
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$(BINDIR)\confsample.exe $(BINDIR)\sndinfo.exe \
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$(BINDIR)\level.exe
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all: $(OBJDIR) $(SAMPLES)
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@ -41,7 +41,7 @@ BINDIR := ../bin/samples
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CFLAGS = $(_CFLAGS)
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LDFLAGS = $(_LDFLAGS)
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SAMPLES := simpleua playfile playsine confsample sndinfo
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SAMPLES := simpleua playfile playsine confsample sndinfo level
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EXES := $(foreach file, $(SAMPLES), $(BINDIR)/$(file)-$(MACHINE_NAME)-$(OS_NAME)-$(CC_NAME)$(HOST_EXE))
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@ -0,0 +1,147 @@
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/* $Id$ */
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/*
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* Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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static const char *desc =
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" FILE: \n"
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" level.c \n"
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" \n"
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" PURPOSE: \n"
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" Read PCM WAV file and display the audio level the first 100 frames. \n"
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" Each frame is assumed to have 160 samples. \n"
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" \n"
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" USAGE: \n"
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" level file.wav \n"
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" \n"
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" The WAV file SHOULD have a 16bit mono samples. ";
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#include <pjmedia.h>
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#include <pjlib.h>
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#include <stdio.h>
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/* For logging purpose. */
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#define THIS_FILE "level.c"
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/* Util to display the error message for the specified error code */
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static int app_perror( const char *sender, const char *title,
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pj_status_t status)
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{
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char errmsg[PJ_ERR_MSG_SIZE];
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pj_strerror(status, errmsg, sizeof(errmsg));
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printf("%s: %s [code=%d]\n", title, errmsg, status);
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return 1;
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}
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/*
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* main()
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*/
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int main(int argc, char *argv[])
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{
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enum { NSAMPLES = 160, COUNT=100 };
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pj_caching_pool cp;
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pjmedia_endpt *med_endpt;
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pj_pool_t *pool;
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pjmedia_port *file_port;
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int i;
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pj_status_t status;
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/* Verify cmd line arguments. */
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if (argc != 2) {
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puts("");
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puts(desc);
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return 1;
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}
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/* Must init PJLIB first: */
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status = pj_init();
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
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/* Must create a pool factory before we can allocate any memory. */
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pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0);
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/*
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* Initialize media endpoint.
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* This will implicitly initialize PJMEDIA too.
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*/
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status = pjmedia_endpt_create(&cp.factory, &med_endpt);
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
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/* Create memory pool for our file player */
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pool = pj_pool_create( &cp.factory, /* pool factory */
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"wav", /* pool name. */
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4000, /* init size */
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4000, /* increment size */
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NULL /* callback on error */
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);
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/* Create file media port from the WAV file */
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status = pjmedia_file_player_port_create( pool, /* memory pool */
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argv[1], /* file to play */
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0, /* flags */
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0, /* default buffer */
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NULL, /* user data */
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&file_port/* returned port */
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);
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if (status != PJ_SUCCESS) {
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app_perror(THIS_FILE, "Unable to use WAV file", status);
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return 1;
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}
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for (i=0; i<COUNT; ++i) {
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pj_int16_t framebuf[NSAMPLES];
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pjmedia_frame frm;
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pj_int32_t level32;
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int level;
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frm.buf = framebuf;
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frm.size = sizeof(framebuf);
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pjmedia_port_get_frame(file_port, &frm);
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level32 = pjmedia_calc_avg_signal( framebuf, NSAMPLES );
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level = linear2ulaw(level32) ^ 0xFF;
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printf("%d ", level);
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}
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puts("");
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/* Destroy file port */
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status = pjmedia_port_destroy( file_port );
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PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1);
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/* Release application pool */
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pj_pool_release( pool );
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/* Destroy media endpoint. */
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pjmedia_endpt_destroy( med_endpt );
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/* Destroy pool factory */
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pj_caching_pool_destroy( &cp );
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/* Done. */
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return 0;
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}
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