[3571] | 1 | //beep.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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| 5 | * |
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| 6 | * This file is part of roard a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * RoarAudio is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "roard.h" |
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| 27 | |
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[3578] | 28 | // TODO: FIXME: move them out of here into libroar: |
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| 29 | static ssize_t beep_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 30 | ROAR_DBG("beep_read(vio=%p, buf=%p, count=%llu) = ?", vio, buf, (long long unsigned int)count); |
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| 31 | |
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| 32 | if ( vio->inst == NULL ) |
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| 33 | return 0; |
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| 34 | |
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| 35 | if ( roar_buffer_shift_out(&(vio->inst), buf, &count) == -1 ) |
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| 36 | return -1; |
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| 37 | |
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| 38 | return count; |
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| 39 | } |
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| 40 | |
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| 41 | static int beep_close (struct roar_vio_calls * vio) { |
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| 42 | ROAR_DBG("beep_close(vio=%p) = ?", vio); |
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| 43 | |
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| 44 | if ( vio->inst != NULL ) |
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| 45 | roar_buffer_free(vio->inst); |
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| 46 | |
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| 47 | ROAR_DBG("beep_close(vio=%p) = 0", vio); |
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| 48 | return 0; |
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| 49 | } |
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| 50 | |
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| 51 | static void beep_init_vio (struct roar_vio_calls * vio, void * inst) { |
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| 52 | ROAR_DBG("beep_init_vio(vio=%p, inst=%p) = ?", vio, inst); |
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| 53 | |
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| 54 | memset(vio, 0, sizeof(struct roar_vio_calls)); |
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| 55 | |
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| 56 | vio->inst = inst; |
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| 57 | vio->read = beep_read; |
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| 58 | vio->close = beep_close; |
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| 59 | |
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| 60 | ROAR_DBG("beep_init_vio(vio=%p, inst=%p) = (void)", vio, inst); |
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| 61 | } |
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| 62 | |
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| 63 | struct roar_buffer * beep_fill_buffer (struct roar_beep * beep, struct roar_audio_info * info) { |
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| 64 | struct roar_buffer * buf; |
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| 65 | size_t frames = beep->time * info->rate / 1000; |
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| 66 | size_t samples = frames * info->channels; |
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| 67 | size_t mod = info->rate / beep->freq; |
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| 68 | char * data; |
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| 69 | char val; |
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| 70 | size_t pos; |
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| 71 | size_t chan; |
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| 72 | |
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| 73 | ROAR_DBG("beep_fill_buffer(beep=%p, info=%p) = ?", beep, info); |
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| 74 | |
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| 75 | if ( roar_buffer_new(&buf, samples) == -1 ) |
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| 76 | return NULL; |
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| 77 | |
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| 78 | if ( roar_buffer_get_data(buf, &data) == -1 ) { |
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| 79 | roar_buffer_free(buf); |
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| 80 | ROAR_DBG("beep_fill_buffer(beep=%p, info=%p) = NULL", beep, info); |
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| 81 | return NULL; |
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| 82 | } |
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| 83 | |
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| 84 | for (pos = 0; pos < frames; pos++) { |
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| 85 | val = (pos % mod) < mod/2 ? -128 : 127; |
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| 86 | for (chan = 0; chan < info->channels; chan++) |
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| 87 | data[pos*info->channels + chan] = val; |
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| 88 | } |
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| 89 | |
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| 90 | ROAR_DBG("beep_fill_buffer(beep=%p, info=%p) = %p", beep, info, buf); |
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| 91 | return buf; |
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| 92 | } |
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| 93 | |
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[3573] | 94 | int beep_start (int client, struct roar_beep * beep) { |
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[3578] | 95 | struct roar_stream_server * ss; |
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| 96 | struct roar_stream * s; |
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| 97 | struct roar_buffer * buf; |
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[3576] | 98 | int stream; |
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| 99 | |
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[3578] | 100 | ROAR_DBG("beep_start(client=%i, beep=%p) = ?", client, beep); |
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| 101 | |
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[3576] | 102 | if ( beep->vol == 0 ) |
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[3580] | 103 | beep->vol = ROAR_BEEP_DEFAULT_VOL; |
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[3576] | 104 | |
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| 105 | if ( beep->time == 0 ) |
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[3582] | 106 | beep->time = ROAR_BEEP_DEFAULT_TIME; |
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[3576] | 107 | |
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| 108 | if ( beep->freq == 0 ) |
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[3582] | 109 | beep->freq = ROAR_BEEP_DEFAULT_FREQ; |
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[3576] | 110 | |
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| 111 | if ( beep->type == 0 ) |
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[3582] | 112 | beep->type = ROAR_BEEP_DEFAULT_TYPE; |
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[3576] | 113 | |
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| 114 | // x, y, z location '0' is allready centered. |
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| 115 | |
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| 116 | // TODO: remove the following lions as soon as we support non zero values |
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| 117 | if ( beep->z != 0 ) |
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| 118 | return -1; |
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| 119 | |
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| 120 | if ( beep->y != 0 ) |
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| 121 | return -1; |
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| 122 | |
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[3578] | 123 | ROAR_DBG("beep_start(client=%i, beep=%p) = ?", client, beep); |
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| 124 | |
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[3576] | 125 | if ((stream = streams_new()) == -1 ) |
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| 126 | return -1; |
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| 127 | |
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[3578] | 128 | ROAR_DBG("beep_start(client=%i, beep=%p): stream=%i", client, beep, stream); |
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| 129 | |
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[3576] | 130 | if ( client_stream_add(client, stream) == -1 ) { |
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| 131 | streams_delete(stream); |
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| 132 | return -1; |
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| 133 | } |
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| 134 | |
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[3577] | 135 | if ( streams_set_name(stream, "Beep Source") == -1 ) { |
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| 136 | streams_delete(stream); |
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| 137 | return -1; |
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| 138 | } |
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| 139 | |
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[3576] | 140 | if ( streams_get(stream, &ss) == -1 ) { |
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| 141 | streams_delete(stream); |
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| 142 | return -1; |
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| 143 | } |
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| 144 | |
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| 145 | s = ROAR_STREAM(ss); |
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| 146 | |
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| 147 | memcpy(&(s->info), g_sa, sizeof(s->info)); |
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| 148 | |
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[3581] | 149 | s->info.channels = 2; |
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[3578] | 150 | s->info.bits = 8; |
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[3576] | 151 | |
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[3581] | 152 | ss->mixer.mixer[0] = beep->x > 0 ? |
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| 153 | ((long)beep->vol * ((long)ROAR_BEEP_MAX_POS - (long)beep->x)/(long)ROAR_BEEP_MAX_POS) : |
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| 154 | beep->vol; |
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| 155 | ss->mixer.mixer[1] = beep->x < 0 ? |
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| 156 | ((long)beep->vol * ((long)ROAR_BEEP_MAX_POS + (long)beep->x)/(long)ROAR_BEEP_MAX_POS) : |
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| 157 | beep->vol; |
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| 158 | ss->mixer.scale = ROAR_BEEP_MAX_VOL; |
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| 159 | |
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| 160 | ROAR_DBG("beep_start(client=%i, beep=%p): beep->x=%i, ss->mixer.mixer[] = {%u, %u}", client, beep, beep->x, ss->mixer.mixer[0], ss->mixer.mixer[1]); |
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[3580] | 161 | |
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[3576] | 162 | if ( streams_set_dir(stream, ROAR_DIR_PLAY, 1) == -1 ) { |
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| 163 | streams_delete(stream); |
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| 164 | return -1; |
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| 165 | } |
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| 166 | |
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[3630] | 167 | if ( streams_set_role(stream, ROAR_ROLE_BEEP) == -1 ) { |
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| 168 | streams_delete(stream); |
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| 169 | return -1; |
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| 170 | } |
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| 171 | |
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[3578] | 172 | if ( (buf = beep_fill_buffer(beep, &(s->info))) == NULL ) { |
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| 173 | streams_delete(stream); |
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| 174 | return -1; |
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| 175 | } |
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| 176 | |
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| 177 | ROAR_DBG("beep_start(client=%i, beep=%p): buf=%p", client, beep, buf); |
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| 178 | |
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| 179 | beep_init_vio(&(ss->vio), buf); |
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| 180 | |
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| 181 | if ( streams_set_fh(stream, -2) == -1 ) { |
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| 182 | streams_delete(stream); |
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| 183 | return -1; |
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| 184 | } |
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| 185 | |
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| 186 | ROAR_DBG("beep_start(client=%i, beep=%p) = %i", client, beep, stream); |
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[3576] | 187 | return stream; |
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[3573] | 188 | } |
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| 189 | |
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[3571] | 190 | //ll |
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