[3705] | 1 | //libroarrsound.c: |
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[3703] | 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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| 5 | * The code (may) include prototypes and comments (and maybe |
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| 6 | * other code fragements) from RSound. |
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| 7 | * They are copyrighted by Hans-Kristian 'maister' Arntzen. |
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| 8 | * |
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| 9 | * This file is part of libroarrsound a part of RoarAudio, |
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| 10 | * a cross-platform sound system for both, home and professional use. |
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| 11 | * See README for details. |
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| 12 | * |
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| 13 | * This file is free software; you can redistribute it and/or modify |
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| 14 | * it under the terms of the GNU General Public License version 3 |
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| 15 | * as published by the Free Software Foundation. |
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| 16 | * |
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| 17 | * RoarAudio is distributed in the hope that it will be useful, |
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| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 20 | * GNU General Public License for more details. |
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| 21 | * |
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| 22 | * You should have received a copy of the GNU General Public License |
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| 23 | * along with this software; see the file COPYING. If not, write to |
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| 24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 25 | * |
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| 26 | * NOTE for everyone want's to change something and send patches: |
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| 27 | * read README and HACKING! There a addition information on |
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| 28 | * the license of this document you need to read before you send |
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| 29 | * any patches. |
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| 30 | */ |
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| 31 | |
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| 32 | #include "libroarrsound.h" |
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| 33 | |
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[3744] | 34 | static size_t libroarrsound_fmt2fs (enum rsd_format format) { |
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[3707] | 35 | switch (format) { |
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| 36 | case RSD_S16_LE: |
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| 37 | case RSD_S16_BE: |
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[3865] | 38 | case RSD_S16_NE: |
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[3707] | 39 | case RSD_U16_LE: |
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| 40 | case RSD_U16_BE: |
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[3865] | 41 | case RSD_U16_NE: |
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[3707] | 42 | return 16; |
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| 43 | break; |
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| 44 | case RSD_U8: |
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| 45 | case RSD_S8: |
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[3865] | 46 | case RSD_ALAW: |
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| 47 | case RSD_MULAW: |
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[3707] | 48 | return 8; |
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| 49 | break; |
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| 50 | default: |
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| 51 | return 0; |
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| 52 | break; |
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| 53 | } |
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| 54 | } |
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| 55 | |
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| 56 | int rsd_init (rsound_t **rd) { |
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| 57 | struct libroarrsound * self; |
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| 58 | |
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[3793] | 59 | ROAR_DBG("rsd_init(rd=%p) = ?", rd); |
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| 60 | |
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[3707] | 61 | if ( rd == NULL ) |
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| 62 | return -1; |
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| 63 | |
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| 64 | self = roar_mm_malloc(sizeof(struct libroarrsound)); |
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| 65 | |
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| 66 | if ( self == NULL ) |
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| 67 | return -1; |
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| 68 | |
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| 69 | memset(self, 0, sizeof(struct libroarrsound)); |
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| 70 | |
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| 71 | *rd = (rsound_t*)self; |
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| 72 | |
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| 73 | self->rsound.conn.socket = -1; |
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| 74 | self->rsound.conn.ctl_socket = -1; |
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| 75 | self->rsound.channels = ROAR_CHANNELS_DEFAULT; |
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| 76 | self->rsound.rate = ROAR_RATE_DEFAULT; |
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| 77 | self->rsound.format = RSD_S16_LE; |
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| 78 | |
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[3916] | 79 | strncpy(self->rsound.identity, "libroarrsound client", sizeof(self->rsound.identity) - 1); |
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| 80 | self->rsound.identity[sizeof(self->rsound.identity)-1] = 0; |
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| 81 | |
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[3707] | 82 | return 0; |
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| 83 | } |
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| 84 | |
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| 85 | /* Frees an rsound_t struct. */ |
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| 86 | int rsd_free (rsound_t *rd) { |
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| 87 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 88 | int ret = 0; |
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| 89 | |
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| 90 | if ( self == NULL ) |
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| 91 | return -1; |
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| 92 | |
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| 93 | if ( self->flags & LIBROARRSOUND_FLAGS_CONNECTED ) |
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| 94 | if ( roar_disconnect(&(self->con)) == -1 ) |
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| 95 | ret = -1; |
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| 96 | |
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| 97 | if ( self->flags & LIBROARRSOUND_FLAGS_STREAMING ) |
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| 98 | if ( roar_vio_close(&(self->vio)) == -1 ) |
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| 99 | ret = -1; |
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| 100 | |
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| 101 | if ( self->rsound.port != NULL ) |
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| 102 | roar_mm_free(self->rsound.port); |
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| 103 | |
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| 104 | roar_mm_free(self); |
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| 105 | |
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| 106 | return ret; |
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| 107 | } |
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| 108 | |
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[3744] | 109 | int rsd_set_param (rsound_t *rd, enum rsd_settings option, void* param) { |
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[3707] | 110 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 111 | |
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[3727] | 112 | ROAR_DBG("rsd_set_param(rd=%p, option=%i, param=%p) = ?", rd, option, param); |
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| 113 | |
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[3707] | 114 | if ( self == NULL || param == NULL ) |
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| 115 | return -1; |
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| 116 | |
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[3743] | 117 | switch (option) { |
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[3707] | 118 | // connection settings: |
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| 119 | case RSD_HOST: |
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[3735] | 120 | if ( self->rsound.host != NULL ) |
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| 121 | roar_mm_free(self->rsound.host); |
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| 122 | |
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[3707] | 123 | self->rsound.host = roar_mm_strdup(param); |
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| 124 | break; |
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| 125 | case RSD_PORT: |
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[3735] | 126 | if ( self->rsound.port != NULL ) |
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| 127 | roar_mm_free(self->rsound.port); |
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| 128 | |
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[3707] | 129 | self->rsound.port = roar_mm_strdup(param); |
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| 130 | break; |
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[3916] | 131 | case RSD_IDENTITY: |
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| 132 | strncpy(self->rsound.identity, param, sizeof(self->rsound.identity) - 1); |
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| 133 | self->rsound.identity[sizeof(self->rsound.identity)-1] = 0; |
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| 134 | break; |
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[3707] | 135 | // stream settings: |
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| 136 | case RSD_SAMPLERATE: |
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| 137 | self->rsound.rate = *(int*)param; |
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| 138 | break; |
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| 139 | case RSD_CHANNELS: |
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| 140 | self->rsound.channels = *(int*)param; |
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| 141 | break; |
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| 142 | case RSD_FORMAT: |
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| 143 | self->rsound.format = *(int*)param; |
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| 144 | self->rsound.framesize = libroarrsound_fmt2fs(self->rsound.format); |
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[3727] | 145 | break; |
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[3707] | 146 | default: |
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| 147 | /* |
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| 148 | RSD_BUFSIZE, |
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| 149 | RSD_LATENCY, |
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| 150 | */ |
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[3727] | 151 | ROAR_DBG("rsd_set_param(rd=%p, option=%i, param=%p) = -1", rd, option, param); |
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[3707] | 152 | return -1; |
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| 153 | break; |
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| 154 | } |
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| 155 | |
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[3727] | 156 | ROAR_DBG("rsd_set_param(rd=%p, option=%i, param=%p) = 0", rd, option, param); |
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[3707] | 157 | return 0; |
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| 158 | } |
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| 159 | |
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| 160 | static int libroarrsound_connect (struct libroarrsound * self) { |
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[3711] | 161 | char * host; |
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[3707] | 162 | |
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| 163 | if ( self->flags & LIBROARRSOUND_FLAGS_CONNECTED ) |
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| 164 | return 0; |
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| 165 | |
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[3711] | 166 | host = self->rsound.host; |
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| 167 | |
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| 168 | if ( host == NULL ) |
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| 169 | host = getenv("RSD_SERVER"); |
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[3707] | 170 | |
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| 171 | // FIXME: we currently ignore the port. :( |
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| 172 | |
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[3793] | 173 | ROAR_DBG("libroarrsound_connect(self=%p): try to connect to: %s", self, host); |
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| 174 | |
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[3916] | 175 | if ( roar_simple_connect(&(self->con), host, self->rsound.identity) == -1 ) { |
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[3793] | 176 | ROAR_DBG("libroarrsound_connect(self=%p) = -1 // can not connect to server", self); |
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[3707] | 177 | return -1; |
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[3793] | 178 | } |
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[3707] | 179 | |
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| 180 | self->flags |= LIBROARRSOUND_FLAGS_CONNECTED; |
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| 181 | |
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[3793] | 182 | ROAR_DBG("libroarrsound_connect(self=%p) = 0", self); |
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[3707] | 183 | return 0; |
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| 184 | } |
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| 185 | |
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| 186 | /* Establishes connection to server. Might fail if connection can't be established or that one of |
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| 187 | the mandatory options isn't set in rsd_set_param(). This needs to be called after params have been set |
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| 188 | with rsd_set_param(), and before rsd_write(). */ |
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| 189 | int rsd_start (rsound_t *rd) { |
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| 190 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 191 | int bits = 16; |
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| 192 | int codec; |
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| 193 | |
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[3793] | 194 | ROAR_DBG("rsd_start(rd=%p) = ?", rd); |
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| 195 | |
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[3707] | 196 | if ( self == NULL ) |
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| 197 | return -1; |
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| 198 | |
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| 199 | if ( self->flags & LIBROARRSOUND_FLAGS_STREAMING ) |
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| 200 | return 0; |
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| 201 | |
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[3793] | 202 | ROAR_DBG("rsd_start(rd=%p) = ?", rd); |
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| 203 | |
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[3707] | 204 | if ( !(self->flags & LIBROARRSOUND_FLAGS_CONNECTED) ) { |
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| 205 | if ( libroarrsound_connect(self) == -1 ) |
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| 206 | return -1; |
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| 207 | } |
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| 208 | |
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[3793] | 209 | ROAR_DBG("rsd_start(rd=%p) = ?", rd); |
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| 210 | |
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[3707] | 211 | switch (self->rsound.format) { |
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| 212 | case RSD_S16_LE: |
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| 213 | codec = ROAR_CODEC_PCM_S_LE; |
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| 214 | break; |
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| 215 | case RSD_S16_BE: |
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| 216 | codec = ROAR_CODEC_PCM_S_BE; |
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| 217 | break; |
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[3865] | 218 | case RSD_S16_NE: |
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| 219 | codec = ROAR_CODEC_PCM_S; |
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| 220 | break; |
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[3707] | 221 | case RSD_U16_LE: |
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| 222 | codec = ROAR_CODEC_PCM_U_LE; |
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| 223 | break; |
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| 224 | case RSD_U16_BE: |
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| 225 | codec = ROAR_CODEC_PCM_U_BE; |
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| 226 | break; |
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[3865] | 227 | case RSD_U16_NE: |
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| 228 | codec = ROAR_CODEC_PCM_U; |
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| 229 | break; |
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[3707] | 230 | case RSD_S8: |
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| 231 | codec = ROAR_CODEC_PCM_S; |
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| 232 | bits = 8; |
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| 233 | break; |
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| 234 | case RSD_U8: |
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| 235 | codec = ROAR_CODEC_PCM_U; |
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| 236 | bits = 8; |
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| 237 | break; |
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[3865] | 238 | case RSD_ALAW: |
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| 239 | codec = ROAR_CODEC_ALAW; |
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| 240 | bits = 8; |
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| 241 | break; |
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| 242 | case RSD_MULAW: |
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| 243 | codec = ROAR_CODEC_MULAW; |
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| 244 | bits = 8; |
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| 245 | break; |
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[3707] | 246 | default: |
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| 247 | return -1; |
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| 248 | break; |
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| 249 | } |
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| 250 | |
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[3793] | 251 | ROAR_DBG("rsd_start(rd=%p) = ?", rd); |
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| 252 | |
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[3707] | 253 | if ( roar_vio_simple_new_stream_obj(&(self->vio), &(self->con), &(self->stream), |
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| 254 | self->rsound.rate, self->rsound.channels, bits, codec, ROAR_DIR_PLAY) == -1 ) |
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| 255 | return -1; |
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| 256 | |
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[3793] | 257 | ROAR_DBG("rsd_start(rd=%p) = ?", rd); |
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| 258 | |
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[3707] | 259 | self->flags |= LIBROARRSOUND_FLAGS_STREAMING; |
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| 260 | |
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[3793] | 261 | ROAR_DBG("rsd_start(rd=%p) = 0", rd); |
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| 262 | |
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[3707] | 263 | return 0; |
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| 264 | } |
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| 265 | |
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| 266 | /* Disconnects from server. All audio data still in network buffer and other buffers will be dropped. |
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| 267 | To continue playing, you will need to rsd_start() again. */ |
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| 268 | int rsd_stop (rsound_t *rd) { |
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| 269 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 270 | int ret; |
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| 271 | |
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| 272 | if ( self == NULL ) |
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| 273 | return -1; |
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| 274 | |
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| 275 | if ( !(self->flags & LIBROARRSOUND_FLAGS_STREAMING) ) |
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| 276 | return 0; |
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| 277 | |
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| 278 | ret = roar_vio_close(&(self->vio)); |
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| 279 | |
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| 280 | self->flags -= LIBROARRSOUND_FLAGS_STREAMING; |
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| 281 | |
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| 282 | return ret; |
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| 283 | } |
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| 284 | |
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| 285 | /* Writes from buf to the internal buffer. Might fail if no connection is established, |
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| 286 | or there was an unexpected error. This function will block until all data has |
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| 287 | been written to the buffer. This function will return the number of bytes written to the buffer, |
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| 288 | or 0 should it fail (disconnection from server). You will have to restart the stream again should this occur. */ |
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[3865] | 289 | size_t rsd_write (rsound_t *rd, const void * buf, size_t size) { |
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[3707] | 290 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 291 | ssize_t ret; |
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| 292 | |
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| 293 | if ( self == NULL ) |
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| 294 | return -1; |
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| 295 | |
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| 296 | if ( !(self->flags & LIBROARRSOUND_FLAGS_STREAMING) ) |
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| 297 | return 0; |
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| 298 | |
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| 299 | ret = roar_vio_write(&(self->vio), (void*)buf, size); |
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| 300 | |
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| 301 | if ( ret == -1 ) |
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| 302 | return 0; |
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| 303 | |
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| 304 | return ret; |
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| 305 | } |
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| 306 | |
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| 307 | /* Gets the position of the buffer pointer. |
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| 308 | Not really interesting for normal applications. |
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| 309 | Might be useful for implementing rsound on top of other blocking APIs. */ |
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| 310 | size_t rsd_pointer (rsound_t *rd); |
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| 311 | |
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| 312 | /* Aquires how much data can be written to the buffer without blocking */ |
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| 313 | size_t rsd_get_avail (rsound_t *rd); |
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| 314 | |
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| 315 | /* Aquires the latency at the moment for the audio stream. It is measured in bytes. Useful for syncing video and audio. */ |
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[3708] | 316 | size_t rsd_delay (rsound_t *rd) { |
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| 317 | (void)rd; |
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| 318 | return 0; // TODO: FIXME: write some code to read pos from server. |
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| 319 | } |
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| 320 | |
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[3889] | 321 | /* Utility for returning latency in milliseconds. */ |
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| 322 | size_t rsd_delay_ms (rsound_t *rd) { |
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| 323 | if ( rd == NULL ) |
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| 324 | return -1; |
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| 325 | |
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| 326 | if ( rd->rate <= 0 || rd->channels <= 0 ) |
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| 327 | return -1; |
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| 328 | |
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| 329 | return (rsd_delay(rd) * 1000) / (rd->rate * rd->channels * rd->framesize); |
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| 330 | } |
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| 331 | |
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| 332 | /* Returns bytes per sample */ |
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| 333 | int rsd_samplesize( rsound_t *rd ) { |
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| 334 | if ( rd == NULL ) |
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| 335 | return -1; |
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| 336 | |
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| 337 | return rd->framesize; |
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| 338 | } |
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| 339 | |
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[3707] | 340 | /* Will sleep until latency of stream reaches maximum allowed latency defined earlier by rsd_set_param - RSD_LATENCY |
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| 341 | Useful for hard headed blocking I/O design where user defined latency is needed. If rsd_set_param hasn't been set |
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| 342 | with RSD_LATENCY, this function will do nothing. */ |
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| 343 | void rsd_delay_wait(rsound_t *rd); |
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| 344 | |
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| 345 | |
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| 346 | /* Pauses or unpauses a stream. pause -> enable = 1 |
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| 347 | This function essentially calls on start() and stop(). This behavior might be changed later. */ |
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[3710] | 348 | int rsd_pause (rsound_t *rd, int enable) { |
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| 349 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 350 | |
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| 351 | if ( self == NULL ) |
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| 352 | return -1; |
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| 353 | |
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| 354 | if ( !(self->flags & LIBROARRSOUND_FLAGS_STREAMING) ) |
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| 355 | return -1; |
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| 356 | |
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| 357 | return roar_stream_set_flags(&(self->con), &(self->stream), ROAR_FLAG_PAUSE, enable ? ROAR_SET_FLAG : ROAR_RESET_FLAG); |
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| 358 | } |
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[3707] | 359 | |
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[3703] | 360 | //ll |
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