12 static void audioresample_buffer_free_mem (AudioresampleBuffer * buffer,
14 static void audioresample_buffer_free_subbuffer (AudioresampleBuffer * buffer,
19 audioresample_buffer_new (void)
21 AudioresampleBuffer *buffer;
23 buffer = g_new0 (AudioresampleBuffer, 1);
24 buffer->ref_count = 1;
29 audioresample_buffer_new_and_alloc (int size)
31 AudioresampleBuffer *buffer = audioresample_buffer_new ();
33 buffer->data = g_malloc (size);
34 buffer->length = size;
35 buffer->free = audioresample_buffer_free_mem;
41 audioresample_buffer_new_with_data (void *data, int size)
43 AudioresampleBuffer *buffer = audioresample_buffer_new ();
46 buffer->length = size;
47 buffer->free = audioresample_buffer_free_mem;
53 audioresample_buffer_new_subbuffer (AudioresampleBuffer * buffer, int offset,
56 AudioresampleBuffer *subbuffer = audioresample_buffer_new ();
59 audioresample_buffer_ref (buffer->parent);
60 subbuffer->parent = buffer->parent;
62 audioresample_buffer_ref (buffer);
63 subbuffer->parent = buffer;
65 subbuffer->data = buffer->data + offset;
66 subbuffer->length = length;
67 subbuffer->free = audioresample_buffer_free_subbuffer;
73 audioresample_buffer_ref (AudioresampleBuffer * buffer)
79 audioresample_buffer_unref (AudioresampleBuffer * buffer)
82 if (buffer->ref_count == 0) {
84 buffer->free (buffer, buffer->priv);
90 audioresample_buffer_free_mem (AudioresampleBuffer * buffer, void *priv)
92 g_free (buffer->data);
96 audioresample_buffer_free_subbuffer (AudioresampleBuffer * buffer, void *priv)
98 audioresample_buffer_unref (buffer->parent);
102 AudioresampleBufferQueue *
103 audioresample_buffer_queue_new (void)
105 return g_new0 (AudioresampleBufferQueue, 1);
109 audioresample_buffer_queue_get_depth (AudioresampleBufferQueue * queue)
115 audioresample_buffer_queue_get_offset (AudioresampleBufferQueue * queue)
117 return queue->offset;
121 audioresample_buffer_queue_free (AudioresampleBufferQueue * queue)
125 for (g = g_list_first (queue->buffers); g; g = g_list_next (g)) {
126 audioresample_buffer_unref ((AudioresampleBuffer *) g->data);
128 g_list_free (queue->buffers);
133 audioresample_buffer_queue_push (AudioresampleBufferQueue * queue,
134 AudioresampleBuffer * buffer)
136 queue->buffers = g_list_append (queue->buffers, buffer);
137 queue->depth += buffer->length;
140 AudioresampleBuffer *
141 audioresample_buffer_queue_pull (AudioresampleBufferQueue * queue, int length)
144 AudioresampleBuffer *newbuffer;
145 AudioresampleBuffer *buffer;
146 AudioresampleBuffer *subbuffer;
148 g_return_val_if_fail (length > 0, NULL);
150 if (queue->depth < length) {
154 RESAMPLE_LOG ("pulling %d, %d available", length, queue->depth);
156 g = g_list_first (queue->buffers);
159 if (buffer->length > length) {
160 newbuffer = audioresample_buffer_new_subbuffer (buffer, 0, length);
162 subbuffer = audioresample_buffer_new_subbuffer (buffer, length,
163 buffer->length - length);
165 audioresample_buffer_unref (buffer);
169 newbuffer = audioresample_buffer_new_and_alloc (length);
171 while (offset < length) {
172 g = g_list_first (queue->buffers);
175 if (buffer->length > length - offset) {
176 int n = length - offset;
178 memcpy (newbuffer->data + offset, buffer->data, n);
180 audioresample_buffer_new_subbuffer (buffer, n, buffer->length - n);
182 audioresample_buffer_unref (buffer);
185 memcpy (newbuffer->data + offset, buffer->data, buffer->length);
187 queue->buffers = g_list_delete_link (queue->buffers, g);
188 offset += buffer->length;
189 audioresample_buffer_unref (buffer);
194 queue->depth -= length;
195 queue->offset += length;
200 AudioresampleBuffer *
201 audioresample_buffer_queue_peek (AudioresampleBufferQueue * queue, int length)
204 AudioresampleBuffer *newbuffer;
205 AudioresampleBuffer *buffer;
208 g_return_val_if_fail (length > 0, NULL);
210 if (queue->depth < length) {
214 RESAMPLE_LOG ("peeking %d, %d available", length, queue->depth);
216 g = g_list_first (queue->buffers);
218 if (buffer->length > length) {
219 newbuffer = audioresample_buffer_new_subbuffer (buffer, 0, length);
221 newbuffer = audioresample_buffer_new_and_alloc (length);
222 while (offset < length) {
225 if (buffer->length > length - offset) {
226 int n = length - offset;
228 memcpy (newbuffer->data + offset, buffer->data, n);
231 memcpy (newbuffer->data + offset, buffer->data, buffer->length);
232 offset += buffer->length;
242 audioresample_buffer_queue_flush (AudioresampleBufferQueue * queue)
246 for (g = g_list_first (queue->buffers); g; g = g_list_next (g)) {
247 audioresample_buffer_unref ((AudioresampleBuffer *) g->data);
249 g_list_free (queue->buffers);
250 queue->buffers = NULL;