[0] | 1 | //streams.c: |
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| 2 | |
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| 3 | #include "roard.h" |
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| 4 | |
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| 5 | int streams_init (void) { |
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| 6 | int i; |
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| 7 | |
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| 8 | for (i = 0; i < ROAR_STREAMS_MAX; i++) |
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| 9 | g_streams[i] = NULL; |
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| 10 | |
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| 11 | return 0; |
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| 12 | } |
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| 13 | |
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| 14 | int streams_free (void) { |
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| 15 | int i; |
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| 16 | |
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| 17 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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| 18 | if ( g_streams[i] != NULL ) { |
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| 19 | streams_delete(i); |
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| 20 | } |
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| 21 | } |
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| 22 | |
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| 23 | return 0; |
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| 24 | } |
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| 25 | |
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| 26 | |
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| 27 | int streams_new (void) { |
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| 28 | int i; |
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| 29 | struct roar_stream * n = NULL; |
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| 30 | |
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| 31 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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| 32 | if ( g_streams[i] == NULL ) { |
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| 33 | n = malloc(sizeof(struct roar_stream_server)); |
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| 34 | if ( n == NULL ) { |
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| 35 | ROAR_ERR("streams_new(void): can not allocate memory for new stream: %s", strerror(errno)); |
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| 36 | ROAR_DBG("streams_new(void) = -1"); |
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| 37 | return -1; |
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| 38 | } |
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| 39 | |
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| 40 | n->id = i; |
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| 41 | n->fh = -1; |
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| 42 | // n->pos_rel_id = i; |
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| 43 | n->database = NULL; |
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| 44 | n->dataoff = NULL; |
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| 45 | n->datalen = 0; |
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| 46 | n->offset = 0; |
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| 47 | |
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| 48 | ((struct roar_stream_server*)n)->client = -1; |
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| 49 | ((struct roar_stream_server*)n)->buffer = NULL; |
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| 50 | ((struct roar_stream_server*)n)->need_extra = 0; |
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| 51 | ((struct roar_stream_server*)n)->output = NULL; |
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| 52 | |
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| 53 | g_streams[i] = (struct roar_stream_server*)n; |
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| 54 | ROAR_DBG("streams_new(void) = %i", i); |
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| 55 | return i; |
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| 56 | } |
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| 57 | } |
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| 58 | |
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| 59 | return -1; |
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| 60 | } |
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| 61 | |
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| 62 | int streams_delete (int id) { |
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| 63 | if ( g_streams[id] == NULL ) |
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| 64 | return 0; |
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| 65 | |
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| 66 | ROAR_DBG("streams_delete(id=%i) = ?", id); |
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| 67 | |
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| 68 | if ( g_streams[id]->client != -1 ) { |
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| 69 | ROAR_DBG("streams_delete(id=%i): Stream is owned by client %i", id, g_streams[id]->client); |
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| 70 | client_stream_delete(g_streams[id]->client, id); |
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| 71 | } |
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| 72 | |
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| 73 | if ( g_streams[id]->buffer != NULL ) |
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| 74 | roar_buffer_free(g_streams[id]->buffer); |
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| 75 | |
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| 76 | if ( g_streams[id]->output != NULL ) |
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| 77 | free(g_streams[id]->output); |
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| 78 | |
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| 79 | if ( ROAR_STREAM(g_streams[id])->fh != -1 ) |
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| 80 | close(ROAR_STREAM(g_streams[id])->fh); |
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| 81 | |
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| 82 | free(g_streams[id]); |
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| 83 | |
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| 84 | g_streams[id] = NULL; |
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| 85 | |
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| 86 | ROAR_DBG("streams_delete(id=%i) = 0", id); |
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| 87 | return 0; |
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| 88 | } |
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| 89 | |
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| 90 | int streams_set_client (int id, int client) { |
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| 91 | if ( g_streams[id] == NULL ) |
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| 92 | return -1; |
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| 93 | |
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| 94 | g_streams[id]->client = client; |
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| 95 | |
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| 96 | return 0; |
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| 97 | } |
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| 98 | |
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| 99 | int streams_set_fh (int id, int fh) { |
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| 100 | if ( g_streams[id] == NULL ) |
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| 101 | return -1; |
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| 102 | |
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| 103 | ((struct roar_stream *)g_streams[id])->fh = fh; |
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| 104 | |
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| 105 | if ( ((struct roar_stream *)g_streams[id])->dir == ROAR_DIR_FILTER ) { |
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| 106 | return 0; |
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| 107 | } else { |
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| 108 | return roar_socket_nonblock(fh, ROAR_SOCKET_NONBLOCK); |
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| 109 | } |
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| 110 | } |
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| 111 | |
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| 112 | |
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| 113 | int streams_get (int id, struct roar_stream_server ** stream) { |
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| 114 | if ( g_streams[id] == NULL ) |
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| 115 | return -1; |
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| 116 | |
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| 117 | *stream = g_streams[id]; |
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| 118 | |
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| 119 | return 0; |
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| 120 | } |
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| 121 | |
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| 122 | |
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| 123 | int streams_get_outputbuffer (int id, void ** buffer, size_t size) { |
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| 124 | if ( g_streams[id] == NULL ) |
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| 125 | return -1; |
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| 126 | |
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| 127 | // output buffer size does never change. |
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| 128 | if ( g_streams[id]->output != NULL ) { |
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| 129 | *buffer = g_streams[id]->output; |
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| 130 | return 0; |
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| 131 | } |
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| 132 | |
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| 133 | if ( (g_streams[id]->output = malloc(size)) == NULL ) { |
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| 134 | ROAR_ERR("streams_get_outputbuffer(*): Can not alloc: %s", strerror(errno)); |
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| 135 | return -1; |
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| 136 | } |
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| 137 | |
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| 138 | *buffer = g_streams[id]->output; |
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| 139 | |
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| 140 | return 0; |
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| 141 | } |
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| 142 | |
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| 143 | int streams_fill_mixbuffer (int id, struct roar_audio_info * info) { |
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| 144 | // TODO: decide: is this the most complex, hacked, un-understadable, |
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| 145 | // un-writeable and even worse: un-readable |
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| 146 | // function in the whole project? |
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| 147 | size_t todo = ROAR_OUTPUT_CALC_OUTBUFSIZE(info); |
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| 148 | size_t todo_in; |
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| 149 | size_t len, outlen; |
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| 150 | size_t mul = 1, div = 1; |
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| 151 | void * rest = NULL; |
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| 152 | void * in = NULL; |
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| 153 | struct roar_buffer * buf; |
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| 154 | struct roar_audio_info * stream_info; |
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| 155 | int is_the_same = 0; |
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| 156 | |
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| 157 | if ( g_streams[id] == NULL ) |
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| 158 | return -1; |
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| 159 | |
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| 160 | if ( streams_get_outputbuffer(id, &rest, todo) == -1 ) { |
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| 161 | return -1; |
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| 162 | } |
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| 163 | |
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| 164 | if ( rest == NULL ) { |
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| 165 | return -1; |
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| 166 | } |
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| 167 | |
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| 168 | // set up stream_info |
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| 169 | |
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| 170 | stream_info = &(((struct roar_stream*)g_streams[id])->info); |
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| 171 | |
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| 172 | // calc todo_in |
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| 173 | todo_in = ROAR_OUTPUT_CALC_OUTBUFSIZE(stream_info); |
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| 174 | |
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| 175 | // calc mul and div: |
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| 176 | mul = todo / todo_in; |
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| 177 | div = todo_in / todo; |
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| 178 | |
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| 179 | if ( mul == 0 ) { |
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| 180 | mul = 1; |
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| 181 | } else { |
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| 182 | div = 1; |
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| 183 | } |
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| 184 | |
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| 185 | ROAR_DBG("streams_fill_mixbuffer(*): mul=%i, div=%i", mul, div); |
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| 186 | |
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| 187 | ROAR_DBG("streams_fill_mixbuffer(*): rest=%p, todo=%i->%i (in->out)", rest, todo_in, todo); |
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| 188 | // are both (input and output) of same format? |
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| 189 | |
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| 190 | |
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| 191 | ROAR_DBG("streams_fill_mixbuffer(*): stream_info:"); |
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| 192 | roar_debug_audio_info_print(stream_info); |
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| 193 | ROAR_DBG("streams_fill_mixbuffer(*): info:"); |
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| 194 | roar_debug_audio_info_print(info); |
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| 195 | |
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| 196 | is_the_same = stream_info->rate == info->rate && stream_info->bits == info->bits && |
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| 197 | stream_info->channels == info->channels && stream_info->codec == info->codec; |
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| 198 | |
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| 199 | ROAR_DBG("streams_fill_mixbuffer(*): is_the_same=%i", is_the_same); |
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| 200 | |
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| 201 | /* How it works: |
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| 202 | * |
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| 203 | * set a counter to the number of samples we need. |
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| 204 | * loop until we have all samples done or no samples are |
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| 205 | * left in our input buffer. |
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| 206 | * If there a no samples left in the input buffer: fill the rest |
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| 207 | * of the output buffer with zeros. |
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| 208 | * |
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| 209 | * The loop: |
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| 210 | * get a buffer from the input. |
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| 211 | * if it's bigger than needed, set an offset. |
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| 212 | * The rest of the data: |
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| 213 | * 0) convert endianness (codec) from remote to local... |
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| 214 | * 1) change bits in of the samples |
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| 215 | * 2) change sample rate |
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| 216 | * 3) change the nummber of channels |
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| 217 | * 4) insert into output buffer |
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| 218 | */ |
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| 219 | |
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| 220 | /* |
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| 221 | // get our first buffer: |
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| 222 | |
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| 223 | if ( stream_shift_buffer(id, &buf) == -1 ) { |
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| 224 | return -1; |
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| 225 | } |
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| 226 | |
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| 227 | // first test for some basic simple cases... |
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| 228 | |
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| 229 | if ( buf == NULL ) { // we habe nothing in input queue |
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| 230 | // we may memset() our output buffer OR |
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| 231 | // just return with -1 so we are going to |
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| 232 | // be ignored. |
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| 233 | return -1; |
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| 234 | } |
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| 235 | */ |
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| 236 | |
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| 237 | while (todo) { // main loop |
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| 238 | ROAR_DBG("streams_fill_mixbuffer(*): looping..."); |
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| 239 | // exit loop if nothing is left, even if we need more data.. |
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| 240 | if ( stream_shift_buffer(id, &buf) == -1 ) |
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| 241 | break; |
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| 242 | if ( buf == NULL ) |
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| 243 | break; |
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| 244 | |
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| 245 | // read the data for this loop... |
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| 246 | roar_buffer_get_data(buf, &in); |
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| 247 | roar_buffer_get_len(buf, &len); |
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| 248 | |
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| 249 | ROAR_DBG("streams_fill_mixbuffer(*): len = %i", len); |
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| 250 | |
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| 251 | if ( len > todo_in ) { |
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| 252 | roar_buffer_set_offset(buf, todo_in); |
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| 253 | len = todo_in; |
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| 254 | } else { |
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| 255 | roar_buffer_set_len(buf, 0); // queue for deletation |
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| 256 | } |
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| 257 | |
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| 258 | // we now have 'len' bytes in 'in' |
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| 259 | |
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| 260 | // calc how much outlen this has... |
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| 261 | outlen = (len * mul) / div; |
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| 262 | |
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| 263 | ROAR_DBG("streams_fill_mixbuffer(*): outlen = %i, buf = %p, len = %i", outlen, in, len); |
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| 264 | |
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| 265 | if ( is_the_same ) { |
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| 266 | /* |
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| 267 | * 0) convert endianness (codec) from remote to local... |
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| 268 | * 1) change bits in of the samples |
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| 269 | * 2) change sample rate |
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| 270 | * 3) change the nummber of channels |
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| 271 | \\==> skiping,... |
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| 272 | */ |
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| 273 | // * 4) insert into output buffer |
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| 274 | ROAR_DBG("streams_fill_mixbuffer(*): memcpy: in->rest: %p -> %p", in, rest); |
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| 275 | if ( memcpy(rest, in, len) != rest ) { |
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| 276 | ROAR_ERR("streams_fill_mixbuffer(*): memcpy returned invalid pointer."); |
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| 277 | } |
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| 278 | |
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| 279 | } else { |
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| 280 | |
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| 281 | /* |
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| 282 | // * 0) convert endianness (codec) from remote to local... |
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| 283 | if ( stream_info->codec != info->codec ) { |
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| 284 | // we neet to convert... |
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| 285 | return -1; |
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| 286 | } |
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| 287 | |
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| 288 | // * 1) change bits in of the samples |
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| 289 | if ( stream_info->bits != info->bits ) { |
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| 290 | return -1; |
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| 291 | } |
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| 292 | |
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| 293 | // * 2) change sample rate |
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| 294 | if ( stream_info->rate != info->rate ) { |
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| 295 | return -1; |
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| 296 | } |
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| 297 | |
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| 298 | // * 3) change the nummber of channels |
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| 299 | if ( stream_info->channels != info->channels ) { |
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| 300 | return -1; |
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| 301 | } |
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| 302 | |
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| 303 | // * 4) insert into output buffer |
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| 304 | */ |
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| 305 | // hey! we have roar_conv() :) |
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| 306 | |
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| 307 | if ( roar_conv(rest, in, 8*len / stream_info->bits, stream_info, info) == -1 ) |
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| 308 | return -1; |
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| 309 | } |
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| 310 | |
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| 311 | // we habe outlen bytes more... |
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| 312 | todo -= outlen; |
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| 313 | rest += outlen; |
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| 314 | todo_in -= len; |
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| 315 | |
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| 316 | roar_buffer_get_len(buf, &len); |
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| 317 | ROAR_DBG("streams_fill_mixbuffer(*): New length of buffer %p is %i", buf, len); |
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| 318 | if ( len == 0 ) |
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| 319 | roar_buffer_delete(buf, NULL); |
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| 320 | } |
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| 321 | |
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| 322 | //len = 0; |
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| 323 | //buffer_get_len(buf, &len); |
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| 324 | |
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| 325 | /* |
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| 326 | if ( len > 0 ) // we still have some data in this buffer, re-inserting it to the input buffers... |
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| 327 | stream_unshift_buffer(id, buf); |
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| 328 | else |
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| 329 | buffer_delete(buf, NULL); |
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| 330 | */ |
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| 331 | |
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| 332 | if ( todo > 0 ) { // zeroize the rest of teh buffer |
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| 333 | memset(rest, 0, todo); |
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| 334 | ROAR_ERR("streams_fill_mixbuffer(*): Underrun in stream: %i bytes missing, filling with zeros", todo); |
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| 335 | } |
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| 336 | |
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| 337 | return 0; |
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| 338 | } |
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| 339 | |
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| 340 | |
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| 341 | int streams_get_mixbuffers (void *** bufferlist, struct roar_audio_info * info, unsigned int pos) { |
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| 342 | static void * bufs[ROAR_STREAMS_MAX]; |
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| 343 | int i; |
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| 344 | int have = 0; |
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| 345 | |
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| 346 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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| 347 | if ( g_streams[i] != NULL ) { |
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| 348 | if ( ((struct roar_stream *)g_streams[i])->dir != ROAR_DIR_PLAY ) |
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| 349 | continue; |
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| 350 | |
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| 351 | if ( streams_get_outputbuffer(i, &bufs[have], ROAR_OUTPUT_CALC_OUTBUFSIZE(info)) == -1 ) { |
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| 352 | ROAR_ERR("streams_get_mixbuffer(*): Can not alloc output buffer for stream %i, BAD!", i); |
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| 353 | ROAR_ERR("streams_get_mixbuffer(*): Ignoring stream for this round."); |
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| 354 | continue; |
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| 355 | } |
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| 356 | if ( streams_fill_mixbuffer(i, info) == -1 ) { |
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| 357 | ROAR_ERR("streams_get_mixbuffer(*): Can not fill output buffer for stream %i, this should not happen", i); |
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| 358 | continue; |
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| 359 | } |
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| 360 | |
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| 361 | ROAR_DBG("streams_get_mixbuffers(*): bufs[have] = %p", bufs[have]); |
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| 362 | ROAR_DBG("streams_get_mixbuffers(*): *bufs[have] = 0x%08x...", *(uint32_t*)bufs[have]); |
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| 363 | |
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| 364 | have++; // we have a new stream! |
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| 365 | } |
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| 366 | } |
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| 367 | |
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| 368 | bufs[have] = NULL; |
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| 369 | |
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| 370 | ROAR_DBG("streams_get_mixbuffers(*): have = %i", have); |
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| 371 | |
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| 372 | *bufferlist = bufs; |
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| 373 | return 0; |
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| 374 | } |
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| 375 | |
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| 376 | |
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| 377 | int stream_add_buffer (int id, struct roar_buffer * buf) { |
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| 378 | ROAR_DBG("stream_add_buffer(id=%i, buf=%p) = ?", id, buf); |
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| 379 | |
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| 380 | if ( g_streams[id] == NULL ) |
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| 381 | return -1; |
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| 382 | |
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| 383 | if ( g_streams[id]->buffer == NULL ) { |
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| 384 | g_streams[id]->buffer = buf; |
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| 385 | ROAR_DBG("stream_add_buffer(id=%i, buf=%p) = 0", id, buf); |
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| 386 | return 0; |
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| 387 | } |
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| 388 | |
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| 389 | ROAR_DBG("stream_add_buffer(id=%i, buf=%p) = ?", id, buf); |
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| 390 | return roar_buffer_add(g_streams[id]->buffer, buf); |
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| 391 | } |
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| 392 | |
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| 393 | int stream_shift_buffer (int id, struct roar_buffer ** buf) { |
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| 394 | struct roar_buffer * next; |
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| 395 | |
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| 396 | if ( g_streams[id] == NULL ) |
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| 397 | return -1; |
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| 398 | |
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| 399 | if ( g_streams[id]->buffer == NULL ) { |
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| 400 | *buf = NULL; |
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| 401 | return 0; |
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| 402 | } |
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| 403 | |
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| 404 | roar_buffer_get_next(g_streams[id]->buffer, &next); |
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| 405 | |
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| 406 | *buf = g_streams[id]->buffer; |
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| 407 | g_streams[id]->buffer = next; |
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| 408 | |
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| 409 | return 0; |
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| 410 | } |
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| 411 | int stream_unshift_buffer (int id, struct roar_buffer * buf) { |
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| 412 | if ( g_streams[id] == NULL ) |
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| 413 | return -1; |
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| 414 | |
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| 415 | if ( g_streams[id]->buffer == NULL ) { |
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| 416 | g_streams[id]->buffer = buf; |
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| 417 | return 0; |
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| 418 | } |
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| 419 | |
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| 420 | roar_buffer_add(buf, g_streams[id]->buffer); |
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| 421 | |
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| 422 | g_streams[id]->buffer = buf; |
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| 423 | |
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| 424 | return 0; |
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| 425 | } |
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| 426 | |
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| 427 | int streams_check (int id) { |
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| 428 | int fh; |
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| 429 | size_t req; |
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| 430 | struct roar_stream * s; |
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| 431 | struct roar_stream_server * ss; |
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| 432 | struct roar_buffer * b; |
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| 433 | char * buf; |
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| 434 | |
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| 435 | if ( g_streams[id] == NULL ) |
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| 436 | return -1; |
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| 437 | |
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| 438 | ROAR_DBG("streams_check(id=%i) = ?", id); |
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| 439 | |
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| 440 | s = (struct roar_stream *) (ss = g_streams[id]); |
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| 441 | |
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| 442 | if ( (fh = s->fh) == -1 ) |
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| 443 | return 0; |
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| 444 | |
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| 445 | if ( s->dir != ROAR_DIR_PLAY ) |
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| 446 | return 0; |
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| 447 | |
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| 448 | ROAR_DBG("streams_check(id=%i): fh = %i", id, fh); |
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| 449 | |
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| 450 | req = ROAR_OUTPUT_BUFFER_SAMPLES * s->info.channels * s->info.bits / 8; // optimal size |
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| 451 | req += ss->need_extra; // bytes left we sould get.... |
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| 452 | |
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| 453 | if ( roar_buffer_new(&b, req) == -1 ) { |
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| 454 | ROAR_ERR("streams_check(*): Can not alloc buffer space!"); |
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| 455 | ROAR_DBG("streams_check(*) = -1"); |
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| 456 | return -1; |
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| 457 | } |
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| 458 | |
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| 459 | roar_buffer_get_data(b, (void **)&buf); |
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| 460 | |
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| 461 | ROAR_DBG("streams_check(id=%i): buffer is up and ready ;)", id); |
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| 462 | |
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| 463 | if ( (req = read(fh, buf, req)) > 0 ) { |
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| 464 | ROAR_DBG("streams_check(id=%i): got %i bytes", id, req); |
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| 465 | |
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| 466 | roar_buffer_set_len(b, req); |
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| 467 | |
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| 468 | if ( stream_add_buffer(id, b) != -1 ) |
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| 469 | return 0; |
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| 470 | |
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| 471 | ROAR_ERR("streams_check(id=%i): something is wrong, could not add buffer to stream!", id); |
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| 472 | roar_buffer_free(b); |
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| 473 | } else { |
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| 474 | ROAR_DBG("streams_check(id=%i): EOF!", id); |
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| 475 | roar_buffer_free(b); |
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| 476 | streams_delete(id); |
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| 477 | ROAR_DBG("streams_check(id=%i) = 0", id); |
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| 478 | return 0; |
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| 479 | } |
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| 480 | |
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| 481 | |
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| 482 | ROAR_DBG("streams_check(id=%i) = -1", id); |
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| 483 | return -1; |
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| 484 | } |
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| 485 | |
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| 486 | |
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| 487 | int streams_send_mon (int id) { |
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| 488 | int fh; |
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| 489 | struct roar_stream * s; |
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| 490 | struct roar_stream_server * ss; |
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| 491 | |
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| 492 | if ( g_streams[id] == NULL ) |
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| 493 | return -1; |
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| 494 | |
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| 495 | ROAR_DBG("streams_send_mon(id=%i) = ?", id); |
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| 496 | |
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| 497 | s = (struct roar_stream *) (ss = g_streams[id]); |
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| 498 | |
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| 499 | if ( (fh = s->fh) == -1 ) |
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| 500 | return 0; |
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| 501 | |
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| 502 | if ( s->dir != ROAR_DIR_MONITOR ) |
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| 503 | return 0; |
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| 504 | |
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| 505 | ROAR_DBG("streams_send_mon(id=%i): fh = %i", id, fh); |
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| 506 | |
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| 507 | if ( write(fh, g_output_buffer, g_output_buffer_len) == g_output_buffer_len ) |
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| 508 | return 0; |
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| 509 | |
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| 510 | // ug... error... delete stream! |
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| 511 | |
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| 512 | streams_delete(id); |
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| 513 | |
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| 514 | return -1; |
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| 515 | } |
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| 516 | |
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| 517 | int streams_send_filter(int id) { |
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| 518 | int fh; |
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| 519 | struct roar_stream * s; |
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| 520 | struct roar_stream_server * ss; |
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| 521 | |
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| 522 | if ( g_streams[id] == NULL ) |
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| 523 | return -1; |
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| 524 | |
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| 525 | ROAR_DBG("streams_send_filter(id=%i) = ?", id); |
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| 526 | |
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| 527 | s = (struct roar_stream *) (ss = g_streams[id]); |
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| 528 | |
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| 529 | if ( (fh = s->fh) == -1 ) |
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| 530 | return 0; |
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| 531 | |
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| 532 | if ( s->dir != ROAR_DIR_FILTER ) |
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| 533 | return 0; |
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| 534 | |
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| 535 | ROAR_DBG("streams_send_filter(id=%i): fh = %i", id, fh); |
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| 536 | |
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| 537 | if ( write(fh, g_output_buffer, g_output_buffer_len) == g_output_buffer_len ) { |
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| 538 | if ( read(fh, g_output_buffer, g_output_buffer_len) == g_output_buffer_len ) { |
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| 539 | return 0; |
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| 540 | } else { |
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| 541 | streams_delete(id); |
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| 542 | return -1; |
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| 543 | } |
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| 544 | } |
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| 545 | |
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| 546 | // ug... error... delete stream! |
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| 547 | |
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| 548 | streams_delete(id); |
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| 549 | |
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| 550 | return -1; |
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| 551 | } |
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| 552 | |
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| 553 | //ll |
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