6 #include <audioresample/buffer.h>
9 #include <audioresample/debug.h>
11 static void audioresample_buffer_free_mem (AudioresampleBuffer * buffer,
13 static void audioresample_buffer_free_subbuffer (AudioresampleBuffer * buffer,
18 audioresample_buffer_new (void)
20 AudioresampleBuffer *buffer;
22 buffer = g_new0 (AudioresampleBuffer, 1);
23 buffer->ref_count = 1;
28 audioresample_buffer_new_and_alloc (int size)
30 AudioresampleBuffer *buffer = audioresample_buffer_new ();
32 buffer->data = g_malloc (size);
33 buffer->length = size;
34 buffer->free = audioresample_buffer_free_mem;
40 audioresample_buffer_new_with_data (void *data, int size)
42 AudioresampleBuffer *buffer = audioresample_buffer_new ();
45 buffer->length = size;
46 buffer->free = audioresample_buffer_free_mem;
52 audioresample_buffer_new_subbuffer (AudioresampleBuffer * buffer, int offset,
55 AudioresampleBuffer *subbuffer = audioresample_buffer_new ();
58 audioresample_buffer_ref (buffer->parent);
59 subbuffer->parent = buffer->parent;
61 audioresample_buffer_ref (buffer);
62 subbuffer->parent = buffer;
64 subbuffer->data = buffer->data + offset;
65 subbuffer->length = length;
66 subbuffer->free = audioresample_buffer_free_subbuffer;
72 audioresample_buffer_ref (AudioresampleBuffer * buffer)
78 audioresample_buffer_unref (AudioresampleBuffer * buffer)
81 if (buffer->ref_count == 0) {
83 buffer->free (buffer, buffer->priv);
89 audioresample_buffer_free_mem (AudioresampleBuffer * buffer, void *priv)
91 g_free (buffer->data);
95 audioresample_buffer_free_subbuffer (AudioresampleBuffer * buffer, void *priv)
97 audioresample_buffer_unref (buffer->parent);
101 AudioresampleBufferQueue *
102 audioresample_buffer_queue_new (void)
104 return g_new0 (AudioresampleBufferQueue, 1);
108 audioresample_buffer_queue_get_depth (AudioresampleBufferQueue * queue)
114 audioresample_buffer_queue_get_offset (AudioresampleBufferQueue * queue)
116 return queue->offset;
120 audioresample_buffer_queue_free (AudioresampleBufferQueue * queue)
124 for (g = g_list_first (queue->buffers); g; g = g_list_next (g)) {
125 audioresample_buffer_unref ((AudioresampleBuffer *) g->data);
127 g_list_free (queue->buffers);
132 audioresample_buffer_queue_push (AudioresampleBufferQueue * queue,
133 AudioresampleBuffer * buffer)
135 queue->buffers = g_list_append (queue->buffers, buffer);
136 queue->depth += buffer->length;
139 AudioresampleBuffer *
140 audioresample_buffer_queue_pull (AudioresampleBufferQueue * queue, int length)
143 AudioresampleBuffer *newbuffer;
144 AudioresampleBuffer *buffer;
145 AudioresampleBuffer *subbuffer;
147 g_return_val_if_fail (length > 0, NULL);
149 if (queue->depth < length) {
153 RESAMPLE_LOG ("pulling %d, %d available", length, queue->depth);
155 g = g_list_first (queue->buffers);
158 if (buffer->length > length) {
159 newbuffer = audioresample_buffer_new_subbuffer (buffer, 0, length);
161 subbuffer = audioresample_buffer_new_subbuffer (buffer, length,
162 buffer->length - length);
164 audioresample_buffer_unref (buffer);
168 newbuffer = audioresample_buffer_new_and_alloc (length);
170 while (offset < length) {
171 g = g_list_first (queue->buffers);
174 if (buffer->length > length - offset) {
175 int n = length - offset;
177 memcpy (newbuffer->data + offset, buffer->data, n);
179 audioresample_buffer_new_subbuffer (buffer, n, buffer->length - n);
181 audioresample_buffer_unref (buffer);
184 memcpy (newbuffer->data + offset, buffer->data, buffer->length);
186 queue->buffers = g_list_delete_link (queue->buffers, g);
187 offset += buffer->length;
188 audioresample_buffer_unref (buffer);
193 queue->depth -= length;
194 queue->offset += length;
199 AudioresampleBuffer *
200 audioresample_buffer_queue_peek (AudioresampleBufferQueue * queue, int length)
203 AudioresampleBuffer *newbuffer;
204 AudioresampleBuffer *buffer;
207 g_return_val_if_fail (length > 0, NULL);
209 if (queue->depth < length) {
213 RESAMPLE_LOG ("peeking %d, %d available", length, queue->depth);
215 g = g_list_first (queue->buffers);
217 if (buffer->length > length) {
218 newbuffer = audioresample_buffer_new_subbuffer (buffer, 0, length);
220 newbuffer = audioresample_buffer_new_and_alloc (length);
221 while (offset < length) {
224 if (buffer->length > length - offset) {
225 int n = length - offset;
227 memcpy (newbuffer->data + offset, buffer->data, n);
230 memcpy (newbuffer->data + offset, buffer->data, buffer->length);
231 offset += buffer->length;