4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #ifdef HAVE_NETINET_IN_H
32 #include <netinet/in.h>
37 #include <polypcore/queue.h>
38 #include <polypcore/xmalloc.h>
39 #include <polypcore/log.h>
44 PA_PSTREAM_DESCRIPTOR_LENGTH,
45 PA_PSTREAM_DESCRIPTOR_CHANNEL,
46 PA_PSTREAM_DESCRIPTOR_OFFSET_HI,
47 PA_PSTREAM_DESCRIPTOR_OFFSET_LO,
48 PA_PSTREAM_DESCRIPTOR_SEEK,
49 PA_PSTREAM_DESCRIPTOR_MAX
52 typedef uint32_t pa_pstream_descriptor[PA_PSTREAM_DESCRIPTOR_MAX];
54 #define PA_PSTREAM_DESCRIPTOR_SIZE (PA_PSTREAM_DESCRIPTOR_MAX*sizeof(uint32_t))
55 #define FRAME_SIZE_MAX (1024*500) /* half a megabyte */
58 enum { PA_PSTREAM_ITEM_PACKET, PA_PSTREAM_ITEM_MEMBLOCK } type;
64 pa_seek_mode_t seek_mode;
73 pa_mainloop_api *mainloop;
74 pa_defer_event *defer_event;
79 void (*die_callback) (pa_pstream *p, void *userdata);
80 void *die_callback_userdata;
83 struct item_info* current;
84 pa_pstream_descriptor descriptor;
90 pa_memblock *memblock;
92 pa_pstream_descriptor descriptor;
97 void (*recieve_packet_callback) (pa_pstream *p, pa_packet *packet, void *userdata);
98 void *recieve_packet_callback_userdata;
100 void (*recieve_memblock_callback) (pa_pstream *p, uint32_t channel, int64_t offset, pa_seek_mode_t seek, const pa_memchunk *chunk, void *userdata);
101 void *recieve_memblock_callback_userdata;
103 void (*drain_callback)(pa_pstream *p, void *userdata);
104 void *drain_userdata;
106 pa_memblock_stat *memblock_stat;
109 static int do_write(pa_pstream *p);
110 static int do_read(pa_pstream *p);
112 static void do_something(pa_pstream *p) {
115 p->mainloop->defer_enable(p->defer_event, 0);
119 if (!p->dead && pa_iochannel_is_readable(p->io)) {
122 } else if (!p->dead && pa_iochannel_is_hungup(p->io))
125 if (!p->dead && pa_iochannel_is_writable(p->io)) {
138 p->die_callback(p, p->die_callback_userdata);
143 static void io_callback(pa_iochannel*io, void *userdata) {
144 pa_pstream *p = userdata;
152 static void defer_callback(pa_mainloop_api *m, pa_defer_event *e, void*userdata) {
153 pa_pstream *p = userdata;
156 assert(p->defer_event == e);
157 assert(p->mainloop == m);
162 pa_pstream *pa_pstream_new(pa_mainloop_api *m, pa_iochannel *io, pa_memblock_stat *s) {
166 p = pa_xnew(pa_pstream, 1);
170 pa_iochannel_set_callback(io, io_callback, p);
173 p->die_callback = NULL;
174 p->die_callback_userdata = NULL;
177 p->defer_event = m->defer_new(m, defer_callback, p);
178 m->defer_enable(p->defer_event, 0);
180 p->send_queue = pa_queue_new();
181 assert(p->send_queue);
183 p->write.current = NULL;
186 p->read.memblock = NULL;
187 p->read.packet = NULL;
190 p->recieve_packet_callback = NULL;
191 p->recieve_packet_callback_userdata = NULL;
193 p->recieve_memblock_callback = NULL;
194 p->recieve_memblock_callback_userdata = NULL;
196 p->drain_callback = NULL;
197 p->drain_userdata = NULL;
199 p->memblock_stat = s;
201 pa_iochannel_socket_set_rcvbuf(io, 1024*8);
202 pa_iochannel_socket_set_sndbuf(io, 1024*8);
207 static void item_free(void *item, PA_GCC_UNUSED void *p) {
208 struct item_info *i = item;
211 if (i->type == PA_PSTREAM_ITEM_MEMBLOCK) {
212 assert(i->chunk.memblock);
213 pa_memblock_unref(i->chunk.memblock);
215 assert(i->type == PA_PSTREAM_ITEM_PACKET);
217 pa_packet_unref(i->packet);
223 static void pstream_free(pa_pstream *p) {
228 pa_queue_free(p->send_queue, item_free, NULL);
230 if (p->write.current)
231 item_free(p->write.current, NULL);
233 if (p->read.memblock)
234 pa_memblock_unref(p->read.memblock);
237 pa_packet_unref(p->read.packet);
242 void pa_pstream_send_packet(pa_pstream*p, pa_packet *packet) {
244 assert(p && packet && p->ref >= 1);
249 /* pa_log(__FILE__": push-packet %p", packet); */
251 i = pa_xnew(struct item_info, 1);
252 i->type = PA_PSTREAM_ITEM_PACKET;
253 i->packet = pa_packet_ref(packet);
255 pa_queue_push(p->send_queue, i);
256 p->mainloop->defer_enable(p->defer_event, 1);
259 void pa_pstream_send_memblock(pa_pstream*p, uint32_t channel, int64_t offset, pa_seek_mode_t seek_mode, const pa_memchunk *chunk) {
261 assert(p && channel != (uint32_t) -1 && chunk && p->ref >= 1);
266 /* pa_log(__FILE__": push-memblock %p", chunk); */
268 i = pa_xnew(struct item_info, 1);
269 i->type = PA_PSTREAM_ITEM_MEMBLOCK;
271 i->channel = channel;
273 i->seek_mode = seek_mode;
275 pa_memblock_ref(i->chunk.memblock);
277 pa_queue_push(p->send_queue, i);
278 p->mainloop->defer_enable(p->defer_event, 1);
281 void pa_pstream_set_recieve_packet_callback(pa_pstream *p, void (*callback) (pa_pstream *p, pa_packet *packet, void *userdata), void *userdata) {
282 assert(p && callback);
284 p->recieve_packet_callback = callback;
285 p->recieve_packet_callback_userdata = userdata;
288 void pa_pstream_set_recieve_memblock_callback(pa_pstream *p, void (*callback) (pa_pstream *p, uint32_t channel, int64_t delta, pa_seek_mode_t seek, const pa_memchunk *chunk, void *userdata), void *userdata) {
289 assert(p && callback);
291 p->recieve_memblock_callback = callback;
292 p->recieve_memblock_callback_userdata = userdata;
295 static void prepare_next_write_item(pa_pstream *p) {
298 if (!(p->write.current = pa_queue_pop(p->send_queue)))
303 if (p->write.current->type == PA_PSTREAM_ITEM_PACKET) {
304 /*pa_log(__FILE__": pop-packet %p", p->write.current->packet);*/
306 assert(p->write.current->packet);
307 p->write.data = p->write.current->packet->data;
308 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH] = htonl(p->write.current->packet->length);
309 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL] = htonl((uint32_t) -1);
310 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_HI] = 0;
311 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_LO] = 0;
312 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_SEEK] = 0;
314 assert(p->write.current->type == PA_PSTREAM_ITEM_MEMBLOCK && p->write.current->chunk.memblock);
315 p->write.data = (uint8_t*) p->write.current->chunk.memblock->data + p->write.current->chunk.index;
316 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH] = htonl(p->write.current->chunk.length);
317 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL] = htonl(p->write.current->channel);
318 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_HI] = htonl((uint32_t) (((uint64_t) p->write.current->offset) >> 32));
319 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_LO] = htonl((uint32_t) ((uint64_t) p->write.current->offset));
320 p->write.descriptor[PA_PSTREAM_DESCRIPTOR_SEEK] = htonl(p->write.current->seek_mode);
324 static int do_write(pa_pstream *p) {
330 if (!p->write.current)
331 prepare_next_write_item(p);
333 if (!p->write.current)
336 assert(p->write.data);
338 if (p->write.index < PA_PSTREAM_DESCRIPTOR_SIZE) {
339 d = (uint8_t*) p->write.descriptor + p->write.index;
340 l = PA_PSTREAM_DESCRIPTOR_SIZE - p->write.index;
342 d = (uint8_t*) p->write.data + p->write.index - PA_PSTREAM_DESCRIPTOR_SIZE;
343 l = ntohl(p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) - (p->write.index - PA_PSTREAM_DESCRIPTOR_SIZE);
346 if ((r = pa_iochannel_write(p->io, d, l)) < 0)
351 if (p->write.index >= PA_PSTREAM_DESCRIPTOR_SIZE+ntohl(p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH])) {
352 assert(p->write.current);
353 item_free(p->write.current, (void *) 1);
354 p->write.current = NULL;
356 if (p->drain_callback && !pa_pstream_is_pending(p))
357 p->drain_callback(p, p->drain_userdata);
363 static int do_read(pa_pstream *p) {
369 if (p->read.index < PA_PSTREAM_DESCRIPTOR_SIZE) {
370 d = (uint8_t*) p->read.descriptor + p->read.index;
371 l = PA_PSTREAM_DESCRIPTOR_SIZE - p->read.index;
373 assert(p->read.data);
374 d = (uint8_t*) p->read.data + p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE;
375 l = ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) - (p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE);
378 if ((r = pa_iochannel_read(p->io, d, l)) <= 0)
383 if (p->read.index == PA_PSTREAM_DESCRIPTOR_SIZE) {
384 /* Reading of frame descriptor complete */
386 /* Frame size too large */
387 if (ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) > FRAME_SIZE_MAX) {
388 pa_log_warn(__FILE__": Frame size too large");
392 assert(!p->read.packet && !p->read.memblock);
394 if (ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL]) == (uint32_t) -1) {
395 /* Frame is a packet frame */
396 p->read.packet = pa_packet_new(ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]));
397 p->read.data = p->read.packet->data;
399 /* Frame is a memblock frame */
400 p->read.memblock = pa_memblock_new(ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]), p->memblock_stat);
401 p->read.data = p->read.memblock->data;
403 if (ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_SEEK]) > PA_SEEK_RELATIVE_END) {
404 pa_log_warn(__FILE__": Invalid seek mode");
409 } else if (p->read.index > PA_PSTREAM_DESCRIPTOR_SIZE) {
410 /* Frame payload available */
412 if (p->read.memblock && p->recieve_memblock_callback) { /* Is this memblock data? Than pass it to the user */
413 l = (p->read.index - r) < PA_PSTREAM_DESCRIPTOR_SIZE ? p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE : (size_t) r;
418 chunk.memblock = p->read.memblock;
419 chunk.index = p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE - l;
422 if (p->recieve_memblock_callback) {
426 (((uint64_t) ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_HI])) << 32) |
427 (((uint64_t) ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_LO]))));
429 p->recieve_memblock_callback(
431 ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL]),
433 ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_SEEK]),
435 p->recieve_memblock_callback_userdata);
438 /* Drop seek info for following callbacks */
439 p->read.descriptor[PA_PSTREAM_DESCRIPTOR_SEEK] =
440 p->read.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_HI] =
441 p->read.descriptor[PA_PSTREAM_DESCRIPTOR_OFFSET_LO] = 0;
446 if (p->read.index >= ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) + PA_PSTREAM_DESCRIPTOR_SIZE) {
447 if (p->read.memblock) {
448 assert(!p->read.packet);
450 pa_memblock_unref(p->read.memblock);
451 p->read.memblock = NULL;
453 assert(p->read.packet);
455 if (p->recieve_packet_callback)
456 p->recieve_packet_callback(p, p->read.packet, p->recieve_packet_callback_userdata);
458 pa_packet_unref(p->read.packet);
459 p->read.packet = NULL;
469 void pa_pstream_set_die_callback(pa_pstream *p, void (*callback)(pa_pstream *p, void *userdata), void *userdata) {
470 assert(p && callback);
471 p->die_callback = callback;
472 p->die_callback_userdata = userdata;
475 int pa_pstream_is_pending(pa_pstream *p) {
481 return p->write.current || !pa_queue_is_empty(p->send_queue);
484 void pa_pstream_set_drain_callback(pa_pstream *p, void (*cb)(pa_pstream *p, void *userdata), void *userdata) {
488 p->drain_callback = cb;
489 p->drain_userdata = userdata;
492 void pa_pstream_unref(pa_pstream*p) {
500 pa_pstream* pa_pstream_ref(pa_pstream*p) {
508 void pa_pstream_close(pa_pstream *p) {
514 pa_iochannel_free(p->io);
518 if (p->defer_event) {
519 p->mainloop->defer_free(p->defer_event);
520 p->defer_event = NULL;
523 p->die_callback = NULL;
524 p->drain_callback = NULL;
525 p->recieve_packet_callback = NULL;
526 p->recieve_memblock_callback = NULL;