Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [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_resampleplay_c Samples: Using Resample Port |
| 23 | * |
| 24 | * This example demonstrates how to use @ref PJMEDIA_RESAMPLE_PORT to |
| 25 | * change the sampling rate of the media streams. |
| 26 | * |
| 27 | * This file is pjsip-apps/src/samples/resampleplay.c |
| 28 | * |
| 29 | * \includelineno resampleplay.c |
| 30 | */ |
| 31 | |
| 32 | #include <pjmedia.h> |
| 33 | #include <pjlib-util.h> |
| 34 | #include <pjlib.h> |
| 35 | |
| 36 | #include <stdio.h> |
| 37 | #include <stdlib.h> |
| 38 | |
| 39 | #include "util.h" |
| 40 | |
| 41 | /* For logging purpose. */ |
| 42 | #define THIS_FILE "resampleplay.c" |
| 43 | |
| 44 | |
| 45 | static const char *desc = |
| 46 | " FILE \n" |
| 47 | " \n" |
| 48 | " resampleplay.c \n" |
| 49 | " \n" |
| 50 | " PURPOSE \n" |
| 51 | " \n" |
| 52 | " Demonstrate how use resample port to play a WAV file to sound \n" |
| 53 | " device using different sampling rate. \n" |
| 54 | " \n" |
| 55 | " USAGE \n" |
| 56 | " \n" |
| 57 | " resampleplay [options] FILE.WAV \n" |
| 58 | " \n" |
| 59 | " where options: \n" |
| 60 | SND_USAGE |
| 61 | " \n" |
| 62 | " The WAV file could have mono or stereo channels with arbitrary \n" |
| 63 | " sampling rate, but MUST contain uncompressed (i.e. 16bit) PCM. \n"; |
| 64 | |
| 65 | |
| 66 | int main(int argc, char *argv[]) |
| 67 | { |
| 68 | pj_caching_pool cp; |
| 69 | pjmedia_endpt *med_endpt; |
| 70 | pj_pool_t *pool; |
| 71 | pjmedia_port *file_port; |
| 72 | pjmedia_port *resample_port; |
| 73 | pjmedia_snd_port *snd_port; |
| 74 | char tmp[10]; |
| 75 | pj_status_t status; |
| 76 | |
| 77 | int dev_id = -1; |
| 78 | int sampling_rate = CLOCK_RATE; |
| 79 | int channel_count = NCHANNELS; |
| 80 | int samples_per_frame = NSAMPLES; |
| 81 | int bits_per_sample = NBITS; |
| 82 | //int ptime; |
| 83 | //int down_samples; |
| 84 | |
| 85 | /* Must init PJLIB first: */ |
| 86 | status = pj_init(); |
| 87 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 88 | |
| 89 | |
| 90 | /* Get options */ |
| 91 | if (get_snd_options(THIS_FILE, argc, argv, &dev_id, &sampling_rate, |
| 92 | &channel_count, &samples_per_frame, &bits_per_sample)) |
| 93 | { |
| 94 | puts(""); |
| 95 | puts(desc); |
| 96 | return 1; |
| 97 | } |
| 98 | |
| 99 | if (!argv[pj_optind]) { |
| 100 | puts("Error: no file is specified"); |
| 101 | puts(desc); |
| 102 | return 1; |
| 103 | } |
| 104 | |
| 105 | /* Must create a pool factory before we can allocate any memory. */ |
| 106 | pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0); |
| 107 | |
| 108 | /* |
| 109 | * Initialize media endpoint. |
| 110 | * This will implicitly initialize PJMEDIA too. |
| 111 | */ |
| 112 | status = pjmedia_endpt_create(&cp.factory, NULL, 1, &med_endpt); |
| 113 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 114 | |
| 115 | /* Create memory pool for our file player */ |
| 116 | pool = pj_pool_create( &cp.factory, /* pool factory */ |
| 117 | "app", /* pool name. */ |
| 118 | 4000, /* init size */ |
| 119 | 4000, /* increment size */ |
| 120 | NULL /* callback on error */ |
| 121 | ); |
| 122 | |
| 123 | /* Create the file port. */ |
| 124 | status = pjmedia_wav_player_port_create( pool, argv[pj_optind], 0, 0, |
| 125 | 0, &file_port); |
| 126 | if (status != PJ_SUCCESS) { |
| 127 | app_perror(THIS_FILE, "Unable to open file", status); |
| 128 | return 1; |
| 129 | } |
| 130 | |
| 131 | /* File must have same number of channels. */ |
| 132 | if (PJMEDIA_PIA_CCNT(&file_port->info) != (unsigned)channel_count) { |
| 133 | PJ_LOG(3,(THIS_FILE, "Error: file has different number of channels. " |
| 134 | "Perhaps you'd need -c option?")); |
| 135 | pjmedia_port_destroy(file_port); |
| 136 | return 1; |
| 137 | } |
| 138 | |
| 139 | /* Calculate number of samples per frame to be taken from file port */ |
| 140 | //ptime = samples_per_frame * 1000 / sampling_rate; |
| 141 | |
| 142 | /* Create the resample port. */ |
| 143 | status = pjmedia_resample_port_create( pool, file_port, |
| 144 | sampling_rate, 0, |
| 145 | &resample_port); |
| 146 | if (status != PJ_SUCCESS) { |
| 147 | app_perror(THIS_FILE, "Unable to create resample port", status); |
| 148 | return 1; |
| 149 | } |
| 150 | |
| 151 | /* Create sound player port. */ |
| 152 | status = pjmedia_snd_port_create( |
| 153 | pool, /* pool */ |
| 154 | dev_id, /* device */ |
| 155 | dev_id, /* device */ |
| 156 | sampling_rate, /* clock rate. */ |
| 157 | channel_count, /* # of channels. */ |
| 158 | samples_per_frame, /* samples per frame. */ |
| 159 | bits_per_sample, /* bits per sample. */ |
| 160 | 0, /* options */ |
| 161 | &snd_port /* returned port */ |
| 162 | ); |
| 163 | if (status != PJ_SUCCESS) { |
| 164 | app_perror(THIS_FILE, "Unable to open sound device", status); |
| 165 | return 1; |
| 166 | } |
| 167 | |
| 168 | /* Connect resample port to sound device */ |
| 169 | status = pjmedia_snd_port_connect( snd_port, resample_port); |
| 170 | if (status != PJ_SUCCESS) { |
| 171 | app_perror(THIS_FILE, "Error connecting sound ports", status); |
| 172 | return 1; |
| 173 | } |
| 174 | |
| 175 | |
| 176 | /* Dump memory usage */ |
| 177 | dump_pool_usage(THIS_FILE, &cp); |
| 178 | |
| 179 | /* |
| 180 | * File should be playing and looping now, using sound device's thread. |
| 181 | */ |
| 182 | |
| 183 | |
| 184 | /* Sleep to allow log messages to flush */ |
| 185 | pj_thread_sleep(100); |
| 186 | |
| 187 | |
| 188 | printf("Playing %s at sampling rate %d (original file sampling rate=%d)\n", |
| 189 | argv[pj_optind], sampling_rate, |
| 190 | PJMEDIA_PIA_SRATE(&file_port->info)); |
| 191 | puts(""); |
| 192 | puts("Press <ENTER> to stop playing and quit"); |
| 193 | |
| 194 | if (fgets(tmp, sizeof(tmp), stdin) == NULL) { |
| 195 | puts("EOF while reading stdin, will quit now.."); |
| 196 | } |
| 197 | |
| 198 | /* Start deinitialization: */ |
| 199 | |
| 200 | |
| 201 | /* Destroy sound device */ |
| 202 | status = pjmedia_snd_port_destroy( snd_port ); |
| 203 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 204 | |
| 205 | |
| 206 | /* Destroy resample port. |
| 207 | * This will destroy all downstream ports (e.g. the file port) |
| 208 | */ |
| 209 | status = pjmedia_port_destroy( resample_port ); |
| 210 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 211 | |
| 212 | |
| 213 | /* Release application pool */ |
| 214 | pj_pool_release( pool ); |
| 215 | |
| 216 | /* Destroy media endpoint. */ |
| 217 | pjmedia_endpt_destroy( med_endpt ); |
| 218 | |
| 219 | /* Destroy pool factory */ |
| 220 | pj_caching_pool_destroy( &cp ); |
| 221 | |
| 222 | /* Shutdown PJLIB */ |
| 223 | pj_shutdown(); |
| 224 | |
| 225 | |
| 226 | /* Done. */ |
| 227 | return 0; |
| 228 | |
| 229 | } |
| 230 | |
| 231 | |
| 232 | |