[88] | 1 | //meta.c: |
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| 2 | |
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[668] | 3 | /* |
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[3811] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2010 |
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[668] | 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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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[668] | 23 | * |
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| 24 | */ |
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| 25 | |
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[88] | 26 | #include "roard.h" |
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| 27 | |
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[1493] | 28 | #ifdef ROAR_SUPPORT_META |
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| 29 | |
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[90] | 30 | int stream_meta_set (int id, int type, char * name, char * val) { |
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| 31 | int i; |
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| 32 | struct roar_stream_server * s = g_streams[id]; |
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| 33 | |
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| 34 | if ( s == NULL ) |
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| 35 | return -1; |
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| 36 | |
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| 37 | for (i = 0; i < ROAR_META_MAX_PER_STREAM; i++) |
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| 38 | if ( s->meta[i].type == type ) { |
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| 39 | s->meta[i].type = ROAR_META_TYPE_NONE; |
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| 40 | if ( s->meta[i].value ) |
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| 41 | free(s->meta[i].value); |
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| 42 | s->meta[i].value = NULL; |
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| 43 | } |
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| 44 | |
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| 45 | return stream_meta_add(id, type, name, val); |
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| 46 | } |
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| 47 | |
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| 48 | int stream_meta_add (int id, int type, char * name, char * val) { |
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| 49 | int i; |
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| 50 | char * c; |
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| 51 | struct roar_stream_server * s = g_streams[id]; |
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| 52 | |
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| 53 | if ( s == NULL ) |
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| 54 | return -1; |
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| 55 | |
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| 56 | for (i = 0; i < ROAR_META_MAX_PER_STREAM; i++) { |
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| 57 | if ( s->meta[i].type == ROAR_META_TYPE_NONE ) { |
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| 58 | s->meta[i].type = type; |
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| 59 | |
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| 60 | if ( name == NULL ) { |
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| 61 | s->meta[i].key[0] = 0; |
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| 62 | } else { |
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| 63 | strncpy(s->meta[i].key, name, ROAR_META_MAX_NAMELEN); |
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| 64 | } |
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| 65 | |
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[107] | 66 | if ( (c = malloc(strlen(val)+1)) == NULL ) { |
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[90] | 67 | s->meta[i].type = ROAR_META_TYPE_NONE; |
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| 68 | s->meta[i].key[0] = 0; |
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| 69 | return -1; |
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| 70 | } |
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| 71 | |
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| 72 | strcpy(c, val); |
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| 73 | s->meta[i].value = c; |
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| 74 | |
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[96] | 75 | ROAR_DBG("stream_meta_add(id=%i, type=%i, name='%s', val='%s') = 0", id, type, name, val); |
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| 76 | |
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[90] | 77 | return 0; |
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| 78 | } |
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| 79 | } |
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| 80 | |
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| 81 | return -1; |
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| 82 | } |
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| 83 | |
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| 84 | int stream_meta_get (int id, int type, char * name, char * val, size_t len) { |
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[107] | 85 | int i, vallen; |
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[90] | 86 | struct roar_stream_server * s = g_streams[id]; |
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| 87 | |
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| 88 | if ( s == NULL ) |
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| 89 | return -1; |
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| 90 | |
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| 91 | for (i = 0; i < ROAR_META_MAX_PER_STREAM; i++) { |
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| 92 | if ( s->meta[i].type == type ) { |
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| 93 | if ( name != NULL ) |
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| 94 | if ( strncmp(s->meta[i].key, name, ROAR_META_MAX_NAMELEN) != 0 ) |
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| 95 | continue; |
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| 96 | |
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[113] | 97 | if ( s->meta[i].value == NULL ) |
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| 98 | return -1; |
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| 99 | |
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[107] | 100 | if ( (vallen = strlen(s->meta[i].value)) > (len - 1) ) { |
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| 101 | ROAR_DBG("stream_meta_get(*): val too small: need %i have %i", vallen, len); |
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[90] | 102 | return -1; |
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[107] | 103 | } |
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[90] | 104 | |
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[107] | 105 | strncpy(val, s->meta[i].value, vallen); |
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| 106 | val[vallen] = 0; |
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[90] | 107 | |
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| 108 | return 0; |
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| 109 | } |
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| 110 | } |
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| 111 | |
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| 112 | return -1; |
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| 113 | } |
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| 114 | |
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[113] | 115 | int stream_meta_list (int id, int * types, size_t len) { |
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| 116 | int i, j; |
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| 117 | int have = 0; |
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| 118 | int found; |
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| 119 | struct roar_stream_server * s = g_streams[id]; |
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| 120 | |
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| 121 | if ( s == NULL ) |
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| 122 | return -1; |
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| 123 | |
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| 124 | if ( len < ROAR_META_MAX_PER_STREAM ) // TODO: find a way we do not need this |
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| 125 | return -1; |
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| 126 | |
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| 127 | types[0] = -1; |
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| 128 | |
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| 129 | for (i = 0; i < ROAR_META_MAX_PER_STREAM; i++) { |
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| 130 | found = 0; |
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| 131 | for (j = 0; j < have; j++) |
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| 132 | if ( types[j] == s->meta[i].type ) { |
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| 133 | found = 1; |
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| 134 | break; |
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| 135 | } |
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| 136 | |
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| 137 | if ( !found ) |
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| 138 | types[have++] = s->meta[i].type; |
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| 139 | } |
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| 140 | |
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| 141 | return have; |
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| 142 | } |
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| 143 | |
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[90] | 144 | int stream_meta_clear (int id) { |
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| 145 | int i; |
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[486] | 146 | struct roar_stream_server * s = NULL; |
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| 147 | |
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| 148 | if ( id < 0 || id > ROAR_STREAMS_MAX ) { |
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| 149 | ROAR_ERR("stream_meta_clear(id=%i): Can not clear meta data on stream: invalid stream ID", id); |
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| 150 | return -1; |
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| 151 | } |
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| 152 | |
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| 153 | s = g_streams[id]; |
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[90] | 154 | |
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| 155 | if ( s == NULL ) |
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| 156 | return -1; |
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| 157 | |
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| 158 | for (i = 0; i < ROAR_META_MAX_PER_STREAM; i++) { |
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| 159 | s->meta[i].type = ROAR_META_TYPE_NONE; |
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| 160 | if ( s->meta[i].value ) |
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| 161 | free(s->meta[i].value); |
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| 162 | s->meta[i].value = NULL; |
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| 163 | s->meta[i].key[0] = 0; |
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| 164 | } |
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| 165 | |
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| 166 | return 0; |
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| 167 | } |
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| 168 | |
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[1038] | 169 | int stream_meta_finalize(int id) { |
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[1040] | 170 | register int dir; |
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| 171 | register int co, ci, i; |
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| 172 | struct roar_stream_server * s; |
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| 173 | |
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| 174 | if ( streams_get_flag(id, ROAR_FLAG_META) != 1 ) // ignore non meta streams |
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| 175 | return 0; |
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| 176 | |
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| 177 | dir = ROAR_STREAM(g_streams[id])->dir; |
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| 178 | |
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| 179 | if ( dir != ROAR_DIR_PLAY && dir != ROAR_DIR_META && // ignore on non input streams |
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| 180 | dir != ROAR_DIR_FILTER && dir != ROAR_DIR_BIDIR ) |
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| 181 | return 0; |
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| 182 | |
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| 183 | ROAR_DBG("stream_meta_finalize(id=%i) = ?", id); |
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| 184 | |
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| 185 | for (co = 0; co < ROAR_STREAMS_MAX; co++) { |
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| 186 | if ( g_streams[co] == NULL ) |
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| 187 | continue; |
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| 188 | |
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| 189 | dir = ROAR_STREAM(g_streams[co])->dir; |
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| 190 | |
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| 191 | if ( dir != ROAR_DIR_MONITOR && dir != ROAR_DIR_FILTER && |
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| 192 | dir != ROAR_DIR_META && dir != ROAR_DIR_BIDIR && |
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| 193 | dir != ROAR_DIR_OUTPUT ) |
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| 194 | continue; |
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| 195 | |
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| 196 | if ( streams_get_flag(co, ROAR_FLAG_META) != 1 ) |
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| 197 | continue; |
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| 198 | |
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| 199 | ROAR_DBG("stream_meta_finalize(id=%i): found output stream: id=%i", id, co); |
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| 200 | stream_meta_clear(co); |
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| 201 | |
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| 202 | for (ci = 0; ci < ROAR_STREAMS_MAX; ci++) { |
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| 203 | if ( g_streams[ci] == NULL ) |
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| 204 | continue; |
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| 205 | |
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| 206 | dir = ROAR_STREAM(g_streams[ci])->dir; |
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| 207 | |
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| 208 | if ( dir != ROAR_DIR_PLAY && dir != ROAR_DIR_META && |
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| 209 | dir != ROAR_DIR_FILTER && dir != ROAR_DIR_BIDIR ) |
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| 210 | continue; |
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| 211 | |
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| 212 | if ( streams_get_flag(ci, ROAR_FLAG_META) != 1 ) |
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| 213 | continue; |
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| 214 | |
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| 215 | ROAR_DBG("stream_meta_finalize(id=%i): found input stream: id=%i", id, ci); |
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| 216 | |
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| 217 | // ok, next we copy the date of ci to co: |
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| 218 | s = g_streams[ci]; |
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| 219 | |
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| 220 | for (i = 0; i < ROAR_META_MAX_PER_STREAM; i++) { |
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| 221 | if ( s->meta[i].type == ROAR_META_TYPE_NONE ) |
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| 222 | continue; |
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| 223 | |
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| 224 | ROAR_DBG("stream_meta_finalize(id=%i): found meta data, copy: %i->%i", id, ci, co); |
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| 225 | stream_meta_add(co, s->meta[i].type, s->meta[i].key, s->meta[i].value); // ignore errors |
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| 226 | } |
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| 227 | } |
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[1238] | 228 | |
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| 229 | // ask the codec filter to update meta data: |
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[2289] | 230 | ROAR_DBG("stream_meta_finalize(id=%i): Asking stream %i to update meta data", id, co); |
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[1238] | 231 | streams_ctl(co, ROAR_CODECFILTER_CTL_META_UPDATE, NULL); // ignore errors... |
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[1040] | 232 | } |
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| 233 | |
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[1038] | 234 | return 0; |
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| 235 | } |
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| 236 | |
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[1493] | 237 | #endif |
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| 238 | |
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[88] | 239 | //ll |
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