[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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[3707] | 34 | static size_t libroarrsound_fmt2fs (enum format format) { |
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| 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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| 38 | case RSD_U16_LE: |
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| 39 | case RSD_U16_BE: |
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| 40 | return 16; |
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| 41 | break; |
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| 42 | case RSD_U8: |
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| 43 | case RSD_S8: |
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| 44 | return 8; |
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| 45 | break; |
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| 46 | default: |
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| 47 | return 0; |
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| 48 | break; |
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| 49 | } |
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| 50 | } |
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| 51 | |
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| 52 | int rsd_init (rsound_t **rd) { |
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| 53 | struct libroarrsound * self; |
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| 54 | |
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| 55 | if ( rd == NULL ) |
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| 56 | return -1; |
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| 57 | |
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| 58 | self = roar_mm_malloc(sizeof(struct libroarrsound)); |
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| 59 | |
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| 60 | if ( self == NULL ) |
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| 61 | return -1; |
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| 62 | |
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| 63 | memset(self, 0, sizeof(struct libroarrsound)); |
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| 64 | |
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| 65 | *rd = (rsound_t*)self; |
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| 66 | |
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| 67 | self->rsound.conn.socket = -1; |
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| 68 | self->rsound.conn.ctl_socket = -1; |
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| 69 | self->rsound.channels = ROAR_CHANNELS_DEFAULT; |
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| 70 | self->rsound.rate = ROAR_RATE_DEFAULT; |
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| 71 | self->rsound.format = RSD_S16_LE; |
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| 72 | |
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| 73 | return 0; |
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| 74 | } |
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| 75 | |
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| 76 | /* Frees an rsound_t struct. */ |
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| 77 | int rsd_free (rsound_t *rd) { |
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| 78 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 79 | int ret = 0; |
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| 80 | |
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| 81 | if ( self == NULL ) |
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| 82 | return -1; |
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| 83 | |
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| 84 | if ( self->flags & LIBROARRSOUND_FLAGS_CONNECTED ) |
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| 85 | if ( roar_disconnect(&(self->con)) == -1 ) |
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| 86 | ret = -1; |
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| 87 | |
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| 88 | if ( self->flags & LIBROARRSOUND_FLAGS_STREAMING ) |
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| 89 | if ( roar_vio_close(&(self->vio)) == -1 ) |
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| 90 | ret = -1; |
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| 91 | |
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| 92 | if ( self->rsound.host != NULL ) |
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| 93 | roar_mm_free(self->rsound.host); |
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| 94 | |
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| 95 | if ( self->rsound.port != NULL ) |
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| 96 | roar_mm_free(self->rsound.port); |
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| 97 | |
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| 98 | roar_mm_free(self); |
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| 99 | |
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| 100 | return ret; |
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| 101 | } |
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| 102 | |
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| 103 | int rsd_set_param (rsound_t *rd, int option, void* param) { |
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| 104 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 105 | |
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| 106 | if ( self == NULL || param == NULL ) |
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| 107 | return -1; |
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| 108 | |
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| 109 | switch ((enum settings)option) { |
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| 110 | // connection settings: |
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| 111 | case RSD_HOST: |
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| 112 | self->rsound.host = roar_mm_strdup(param); |
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| 113 | break; |
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| 114 | case RSD_PORT: |
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| 115 | self->rsound.port = roar_mm_strdup(param); |
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| 116 | break; |
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| 117 | // stream settings: |
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| 118 | case RSD_SAMPLERATE: |
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| 119 | self->rsound.rate = *(int*)param; |
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| 120 | break; |
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| 121 | case RSD_CHANNELS: |
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| 122 | self->rsound.channels = *(int*)param; |
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| 123 | break; |
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| 124 | case RSD_FORMAT: |
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| 125 | self->rsound.format = *(int*)param; |
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| 126 | self->rsound.framesize = libroarrsound_fmt2fs(self->rsound.format); |
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| 127 | default: |
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| 128 | /* |
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| 129 | RSD_BUFSIZE, |
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| 130 | RSD_LATENCY, |
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| 131 | */ |
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| 132 | return -1; |
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| 133 | break; |
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| 134 | } |
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| 135 | |
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| 136 | return 0; |
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| 137 | } |
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| 138 | |
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| 139 | static int libroarrsound_connect (struct libroarrsound * self) { |
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[3711] | 140 | char * host; |
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[3707] | 141 | |
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| 142 | if ( self->flags & LIBROARRSOUND_FLAGS_CONNECTED ) |
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| 143 | return 0; |
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| 144 | |
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[3711] | 145 | host = self->rsound.host; |
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| 146 | |
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| 147 | if ( host == NULL ) |
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| 148 | host = getenv("RSD_SERVER"); |
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[3707] | 149 | |
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| 150 | // FIXME: we currently ignore the port. :( |
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| 151 | |
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| 152 | if ( roar_simple_connect(&(self->con), host, "libroarrsound client") == -1 ) |
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| 153 | return -1; |
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| 154 | |
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| 155 | self->flags |= LIBROARRSOUND_FLAGS_CONNECTED; |
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| 156 | |
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| 157 | return 0; |
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| 158 | } |
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| 159 | |
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| 160 | /* Establishes connection to server. Might fail if connection can't be established or that one of |
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| 161 | the mandatory options isn't set in rsd_set_param(). This needs to be called after params have been set |
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| 162 | with rsd_set_param(), and before rsd_write(). */ |
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| 163 | int rsd_start (rsound_t *rd) { |
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| 164 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 165 | int bits = 16; |
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| 166 | int codec; |
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| 167 | |
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| 168 | if ( self == NULL ) |
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| 169 | return -1; |
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| 170 | |
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| 171 | if ( self->flags & LIBROARRSOUND_FLAGS_STREAMING ) |
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| 172 | return 0; |
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| 173 | |
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| 174 | if ( !(self->flags & LIBROARRSOUND_FLAGS_CONNECTED) ) { |
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| 175 | if ( libroarrsound_connect(self) == -1 ) |
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| 176 | return -1; |
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| 177 | } |
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| 178 | |
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| 179 | switch (self->rsound.format) { |
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| 180 | case RSD_S16_LE: |
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| 181 | codec = ROAR_CODEC_PCM_S_LE; |
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| 182 | break; |
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| 183 | case RSD_S16_BE: |
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| 184 | codec = ROAR_CODEC_PCM_S_BE; |
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| 185 | break; |
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| 186 | case RSD_U16_LE: |
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| 187 | codec = ROAR_CODEC_PCM_U_LE; |
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| 188 | break; |
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| 189 | case RSD_U16_BE: |
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| 190 | codec = ROAR_CODEC_PCM_U_BE; |
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| 191 | break; |
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| 192 | case RSD_S8: |
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| 193 | codec = ROAR_CODEC_PCM_S; |
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| 194 | bits = 8; |
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| 195 | break; |
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| 196 | case RSD_U8: |
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| 197 | codec = ROAR_CODEC_PCM_U; |
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| 198 | bits = 8; |
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| 199 | break; |
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| 200 | default: |
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| 201 | return -1; |
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| 202 | break; |
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| 203 | } |
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| 204 | |
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| 205 | if ( roar_vio_simple_new_stream_obj(&(self->vio), &(self->con), &(self->stream), |
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| 206 | self->rsound.rate, self->rsound.channels, bits, codec, ROAR_DIR_PLAY) == -1 ) |
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| 207 | return -1; |
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| 208 | |
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| 209 | self->flags |= LIBROARRSOUND_FLAGS_STREAMING; |
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| 210 | |
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| 211 | return 0; |
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| 212 | } |
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| 213 | |
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| 214 | /* Disconnects from server. All audio data still in network buffer and other buffers will be dropped. |
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| 215 | To continue playing, you will need to rsd_start() again. */ |
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| 216 | int rsd_stop (rsound_t *rd) { |
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| 217 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 218 | int ret; |
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| 219 | |
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| 220 | if ( self == NULL ) |
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| 221 | return -1; |
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| 222 | |
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| 223 | if ( !(self->flags & LIBROARRSOUND_FLAGS_STREAMING) ) |
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| 224 | return 0; |
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| 225 | |
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| 226 | ret = roar_vio_close(&(self->vio)); |
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| 227 | |
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| 228 | self->flags -= LIBROARRSOUND_FLAGS_STREAMING; |
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| 229 | |
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| 230 | return ret; |
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| 231 | } |
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| 232 | |
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| 233 | /* Writes from buf to the internal buffer. Might fail if no connection is established, |
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| 234 | or there was an unexpected error. This function will block until all data has |
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| 235 | been written to the buffer. This function will return the number of bytes written to the buffer, |
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| 236 | or 0 should it fail (disconnection from server). You will have to restart the stream again should this occur. */ |
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| 237 | size_t rsd_write (rsound_t *rd, const char* buf, size_t size) { |
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| 238 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 239 | ssize_t ret; |
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| 240 | |
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| 241 | if ( self == NULL ) |
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| 242 | return -1; |
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| 243 | |
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| 244 | if ( !(self->flags & LIBROARRSOUND_FLAGS_STREAMING) ) |
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| 245 | return 0; |
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| 246 | |
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| 247 | ret = roar_vio_write(&(self->vio), (void*)buf, size); |
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| 248 | |
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| 249 | if ( ret == -1 ) |
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| 250 | return 0; |
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| 251 | |
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| 252 | return ret; |
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| 253 | } |
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| 254 | |
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| 255 | /* Gets the position of the buffer pointer. |
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| 256 | Not really interesting for normal applications. |
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| 257 | Might be useful for implementing rsound on top of other blocking APIs. */ |
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| 258 | size_t rsd_pointer (rsound_t *rd); |
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| 259 | |
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| 260 | /* Aquires how much data can be written to the buffer without blocking */ |
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| 261 | size_t rsd_get_avail (rsound_t *rd); |
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| 262 | |
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| 263 | /* 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] | 264 | size_t rsd_delay (rsound_t *rd) { |
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| 265 | (void)rd; |
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| 266 | return 0; // TODO: FIXME: write some code to read pos from server. |
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| 267 | } |
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| 268 | |
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[3707] | 269 | /* Will sleep until latency of stream reaches maximum allowed latency defined earlier by rsd_set_param - RSD_LATENCY |
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| 270 | 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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| 271 | with RSD_LATENCY, this function will do nothing. */ |
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| 272 | void rsd_delay_wait(rsound_t *rd); |
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| 273 | |
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| 274 | |
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| 275 | /* Pauses or unpauses a stream. pause -> enable = 1 |
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| 276 | This function essentially calls on start() and stop(). This behavior might be changed later. */ |
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[3710] | 277 | int rsd_pause (rsound_t *rd, int enable) { |
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| 278 | struct libroarrsound * self = (struct libroarrsound *)rd; |
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| 279 | |
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| 280 | if ( self == NULL ) |
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| 281 | return -1; |
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| 282 | |
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| 283 | if ( !(self->flags & LIBROARRSOUND_FLAGS_STREAMING) ) |
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| 284 | return -1; |
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| 285 | |
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| 286 | return roar_stream_set_flags(&(self->con), &(self->stream), ROAR_FLAG_PAUSE, enable ? ROAR_SET_FLAG : ROAR_RESET_FLAG); |
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| 287 | } |
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[3707] | 288 | |
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[3703] | 289 | //ll |
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