Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | * \page page_pjmedia_samples_tonegen_c Samples: Sine Wave/Dual-Tone Generation |
| 23 | * |
| 24 | * This is a simple program to generate a tone and write the samples to |
| 25 | * a raw PCM file. The main purpose of this file is to analyze the |
| 26 | * quality of the tones/sine wave generated by PJMEDIA tone/sine wave |
| 27 | * generator. |
| 28 | * |
| 29 | * This file is pjsip-apps/src/samples/tonegen.c |
| 30 | * |
| 31 | * \includelineno tonegen.c |
| 32 | */ |
| 33 | |
| 34 | |
| 35 | #include <pjmedia.h> |
| 36 | #include <pjlib.h> |
| 37 | |
| 38 | #define SAMPLES_PER_FRAME 64 |
| 39 | #define ON_DURATION 100 |
| 40 | #define OFF_DURATION 100 |
| 41 | |
| 42 | |
| 43 | /* |
| 44 | * main() |
| 45 | */ |
| 46 | int main() |
| 47 | { |
| 48 | pj_caching_pool cp; |
| 49 | pjmedia_endpt *med_endpt; |
| 50 | pj_pool_t *pool; |
| 51 | pjmedia_port *port; |
| 52 | unsigned i; |
| 53 | pj_status_t status; |
| 54 | |
| 55 | |
| 56 | /* Must init PJLIB first: */ |
| 57 | status = pj_init(); |
| 58 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 59 | |
| 60 | /* Must create a pool factory before we can allocate any memory. */ |
| 61 | pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0); |
| 62 | |
| 63 | /* |
| 64 | * Initialize media endpoint. |
| 65 | * This will implicitly initialize PJMEDIA too. |
| 66 | */ |
| 67 | status = pjmedia_endpt_create(&cp.factory, NULL, 1, &med_endpt); |
| 68 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 69 | |
| 70 | /* Create memory pool for our file player */ |
| 71 | pool = pj_pool_create( &cp.factory, /* pool factory */ |
| 72 | "app", /* pool name. */ |
| 73 | 4000, /* init size */ |
| 74 | 4000, /* increment size */ |
| 75 | NULL /* callback on error */ |
| 76 | ); |
| 77 | |
| 78 | status = pjmedia_tonegen_create(pool, 8000, 1, SAMPLES_PER_FRAME, 16, 0, &port); |
| 79 | if (status != PJ_SUCCESS) |
| 80 | return 1; |
| 81 | |
| 82 | { |
| 83 | pjmedia_tone_desc tones[3]; |
| 84 | |
| 85 | tones[0].freq1 = 200; |
| 86 | tones[0].freq2 = 0; |
| 87 | tones[0].on_msec = ON_DURATION; |
| 88 | tones[0].off_msec = OFF_DURATION; |
| 89 | |
| 90 | tones[1].freq1 = 400; |
| 91 | tones[1].freq2 = 0; |
| 92 | tones[1].on_msec = ON_DURATION; |
| 93 | tones[1].off_msec = OFF_DURATION; |
| 94 | |
| 95 | tones[2].freq1 = 800; |
| 96 | tones[2].freq2 = 0; |
| 97 | tones[2].on_msec = ON_DURATION; |
| 98 | tones[2].off_msec = OFF_DURATION; |
| 99 | |
| 100 | status = pjmedia_tonegen_play(port, 3, tones, 0); |
| 101 | PJ_ASSERT_RETURN(status==PJ_SUCCESS, 1); |
| 102 | } |
| 103 | |
| 104 | { |
| 105 | pjmedia_tone_digit digits[2]; |
| 106 | |
| 107 | digits[0].digit = '0'; |
| 108 | digits[0].on_msec = ON_DURATION; |
| 109 | digits[0].off_msec = OFF_DURATION; |
| 110 | |
| 111 | digits[1].digit = '0'; |
| 112 | digits[1].on_msec = ON_DURATION; |
| 113 | digits[1].off_msec = OFF_DURATION; |
| 114 | |
| 115 | status = pjmedia_tonegen_play_digits(port, 2, digits, 0); |
| 116 | PJ_ASSERT_RETURN(status==PJ_SUCCESS, 1); |
| 117 | } |
| 118 | |
| 119 | { |
| 120 | pjmedia_frame frm; |
| 121 | FILE *f; |
| 122 | void *buf; |
| 123 | |
| 124 | buf = pj_pool_alloc(pool, 2*8000); |
| 125 | frm.buf = buf; |
| 126 | |
| 127 | f = fopen("tonegen.pcm", "wb"); |
| 128 | |
| 129 | for (i=0; i<8000/SAMPLES_PER_FRAME; ++i) { |
| 130 | pj_size_t count; |
| 131 | pjmedia_port_get_frame(port, &frm); |
| 132 | count = fwrite(buf, SAMPLES_PER_FRAME, 2, f); |
| 133 | if (count != 2) |
| 134 | break; |
| 135 | } |
| 136 | |
| 137 | pj_assert(pjmedia_tonegen_is_busy(port) == 0); |
| 138 | fclose(f); |
| 139 | } |
| 140 | |
| 141 | /* Delete port */ |
| 142 | pjmedia_port_destroy(port); |
| 143 | |
| 144 | /* Release application pool */ |
| 145 | pj_pool_release( pool ); |
| 146 | |
| 147 | /* Destroy media endpoint. */ |
| 148 | pjmedia_endpt_destroy( med_endpt ); |
| 149 | |
| 150 | /* Destroy pool factory */ |
| 151 | pj_caching_pool_destroy( &cp ); |
| 152 | |
| 153 | /* Shutdown PJLIB */ |
| 154 | pj_shutdown(); |
| 155 | |
| 156 | |
| 157 | /* Done. */ |
| 158 | return 0; |
| 159 | } |