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-rw-r--r--src/pstream.c457
1 files changed, 0 insertions, 457 deletions
diff --git a/src/pstream.c b/src/pstream.c
deleted file mode 100644
index 3076b776..00000000
--- a/src/pstream.c
+++ /dev/null
@@ -1,457 +0,0 @@
-/* $Id$ */
-
-/***
- This file is part of polypaudio.
-
- polypaudio is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2 of the License,
- or (at your option) any later version.
-
- polypaudio is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with polypaudio; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdlib.h>
-#include <assert.h>
-#include <netinet/in.h>
-
-#include "pstream.h"
-#include "queue.h"
-
-enum pa_pstream_descriptor_index {
- PA_PSTREAM_DESCRIPTOR_LENGTH,
- PA_PSTREAM_DESCRIPTOR_CHANNEL,
- PA_PSTREAM_DESCRIPTOR_DELTA,
- PA_PSTREAM_DESCRIPTOR_MAX
-};
-
-typedef uint32_t pa_pstream_descriptor[PA_PSTREAM_DESCRIPTOR_MAX];
-
-#define PA_PSTREAM_DESCRIPTOR_SIZE (PA_PSTREAM_DESCRIPTOR_MAX*sizeof(uint32_t))
-#define FRAME_SIZE_MAX (1024*64)
-
-struct item_info {
- enum { PA_PSTREAM_ITEM_PACKET, PA_PSTREAM_ITEM_MEMBLOCK } type;
-
- /* memblock info */
- struct pa_memchunk chunk;
- uint32_t channel;
- int32_t delta;
-
- /* packet info */
- struct pa_packet *packet;
-};
-
-struct pa_pstream {
- struct pa_mainloop_api *mainloop;
- struct mainloop_source *mainloop_source;
- struct pa_iochannel *io;
- struct pa_queue *send_queue;
-
- int in_use, shall_free;
-
- int dead;
- void (*die_callback) (struct pa_pstream *p, void *userdata);
- void *die_callback_userdata;
-
- struct {
- struct item_info* current;
- pa_pstream_descriptor descriptor;
- void *data;
- size_t index;
- } write;
-
- struct {
- struct pa_memblock *memblock;
- struct pa_packet *packet;
- pa_pstream_descriptor descriptor;
- void *data;
- size_t index;
- } read;
-
- void (*recieve_packet_callback) (struct pa_pstream *p, struct pa_packet *packet, void *userdata);
- void *recieve_packet_callback_userdata;
-
- void (*recieve_memblock_callback) (struct pa_pstream *p, uint32_t channel, int32_t delta, const struct pa_memchunk *chunk, void *userdata);
- void *recieve_memblock_callback_userdata;
-
- void (*drain_callback)(struct pa_pstream *p, void *userdata);
- void *drain_userdata;
-};
-
-static void do_write(struct pa_pstream *p);
-static void do_read(struct pa_pstream *p);
-
-static void do_something(struct pa_pstream *p) {
- assert(p && !p->shall_free);
- p->mainloop->enable_fixed(p->mainloop, p->mainloop_source, 0);
-
- if (p->dead)
- return;
-
- if (pa_iochannel_is_hungup(p->io)) {
- p->dead = 1;
- if (p->die_callback)
- p->die_callback(p, p->die_callback_userdata);
-
- return;
- }
-
- if (pa_iochannel_is_writable(p->io)) {
- p->in_use = 1;
- do_write(p);
- p->in_use = 0;
-
- if (p->shall_free) {
- pa_pstream_free(p);
- return;
- }
- }
-
- if (pa_iochannel_is_readable(p->io)) {
- p->in_use = 1;
- do_read(p);
- p->in_use = 0;
- if (p->shall_free) {
- pa_pstream_free(p);
- return;
- }
- }
-}
-
-static void io_callback(struct pa_iochannel*io, void *userdata) {
- struct pa_pstream *p = userdata;
- assert(p && p->io == io);
- do_something(p);
-}
-
-static void fixed_callback(struct pa_mainloop_api *m, void *id, void*userdata) {
- struct pa_pstream *p = userdata;
- assert(p && p->mainloop_source == id && p->mainloop == m);
- do_something(p);
-}
-
-struct pa_pstream *pa_pstream_new(struct pa_mainloop_api *m, struct pa_iochannel *io) {
- struct pa_pstream *p;
- assert(io);
-
- p = malloc(sizeof(struct pa_pstream));
- assert(p);
-
- p->io = io;
- pa_iochannel_set_callback(io, io_callback, p);
-
- p->dead = 0;
- p->die_callback = NULL;
- p->die_callback_userdata = NULL;
-
- p->mainloop = m;
- p->mainloop_source = m->source_fixed(m, fixed_callback, p);
- m->enable_fixed(m, p->mainloop_source, 0);
-
- p->send_queue = pa_queue_new();
- assert(p->send_queue);
-
- p->write.current = NULL;
- p->write.index = 0;
-
- p->read.memblock = NULL;
- p->read.packet = NULL;
- p->read.index = 0;
-
- p->recieve_packet_callback = NULL;
- p->recieve_packet_callback_userdata = NULL;
-
- p->recieve_memblock_callback = NULL;
- p->recieve_memblock_callback_userdata = NULL;
-
- p->drain_callback = NULL;
- p->drain_userdata = NULL;
-
- p->in_use = p->shall_free = 0;
-
- return p;
-}
-
-static void item_free(void *item, void *p) {
- struct item_info *i = item;
- assert(i);
-
- if (i->type == PA_PSTREAM_ITEM_MEMBLOCK) {
- assert(i->chunk.memblock);
- pa_memblock_unref(i->chunk.memblock);
- } else {
- assert(i->type == PA_PSTREAM_ITEM_PACKET);
- assert(i->packet);
- pa_packet_unref(i->packet);
- }
-
- free(i);
-}
-
-void pa_pstream_free(struct pa_pstream *p) {
- assert(p);
-
- if (p->in_use) {
- /* If this pstream object is used by someone else on the call stack, we have to postpone the freeing */
- p->dead = p->shall_free = 1;
- return;
- }
-
- pa_iochannel_free(p->io);
- pa_queue_free(p->send_queue, item_free, NULL);
-
- if (p->write.current)
- item_free(p->write.current, NULL);
-
- if (p->read.memblock)
- pa_memblock_unref(p->read.memblock);
-
- if (p->read.packet)
- pa_packet_unref(p->read.packet);
-
- p->mainloop->cancel_fixed(p->mainloop, p->mainloop_source);
- free(p);
-}
-
-void pa_pstream_send_packet(struct pa_pstream*p, struct pa_packet *packet) {
- struct item_info *i;
- assert(p && packet);
-
- i = malloc(sizeof(struct item_info));
- assert(i);
- i->type = PA_PSTREAM_ITEM_PACKET;
- i->packet = pa_packet_ref(packet);
-
- pa_queue_push(p->send_queue, i);
- p->mainloop->enable_fixed(p->mainloop, p->mainloop_source, 1);
-}
-
-void pa_pstream_send_memblock(struct pa_pstream*p, uint32_t channel, int32_t delta, const struct pa_memchunk *chunk) {
- struct item_info *i;
- assert(p && channel != (uint32_t) -1 && chunk);
-
- i = malloc(sizeof(struct item_info));
- assert(i);
- i->type = PA_PSTREAM_ITEM_MEMBLOCK;
- i->chunk = *chunk;
- i->channel = channel;
- i->delta = delta;
-
- pa_memblock_ref(i->chunk.memblock);
-
- pa_queue_push(p->send_queue, i);
- p->mainloop->enable_fixed(p->mainloop, p->mainloop_source, 1);
-}
-
-void pa_pstream_set_recieve_packet_callback(struct pa_pstream *p, void (*callback) (struct pa_pstream *p, struct pa_packet *packet, void *userdata), void *userdata) {
- assert(p && callback);
-
- p->recieve_packet_callback = callback;
- p->recieve_packet_callback_userdata = userdata;
-}
-
-void pa_pstream_set_recieve_memblock_callback(struct pa_pstream *p, void (*callback) (struct pa_pstream *p, uint32_t channel, int32_t delta, const struct pa_memchunk *chunk, void *userdata), void *userdata) {
- assert(p && callback);
-
- p->recieve_memblock_callback = callback;
- p->recieve_memblock_callback_userdata = userdata;
-}
-
-static void prepare_next_write_item(struct pa_pstream *p) {
- assert(p);
-
- if (!(p->write.current = pa_queue_pop(p->send_queue)))
- return;
-
- p->write.index = 0;
-
- if (p->write.current->type == PA_PSTREAM_ITEM_PACKET) {
- assert(p->write.current->packet);
- p->write.data = p->write.current->packet->data;
- p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH] = htonl(p->write.current->packet->length);
- p->write.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL] = htonl((uint32_t) -1);
- p->write.descriptor[PA_PSTREAM_DESCRIPTOR_DELTA] = 0;
- } else {
- assert(p->write.current->type == PA_PSTREAM_ITEM_MEMBLOCK && p->write.current->chunk.memblock);
- p->write.data = p->write.current->chunk.memblock->data + p->write.current->chunk.index;
- p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH] = htonl(p->write.current->chunk.length);
- p->write.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL] = htonl(p->write.current->channel);
- p->write.descriptor[PA_PSTREAM_DESCRIPTOR_DELTA] = htonl(p->write.current->delta);
- }
-}
-
-static void do_write(struct pa_pstream *p) {
- void *d;
- size_t l;
- ssize_t r;
- assert(p);
-
- if (!p->write.current)
- prepare_next_write_item(p);
-
- if (!p->write.current)
- return;
-
- assert(p->write.data);
-
- if (p->write.index < PA_PSTREAM_DESCRIPTOR_SIZE) {
- d = (void*) p->write.descriptor + p->write.index;
- l = PA_PSTREAM_DESCRIPTOR_SIZE - p->write.index;
- } else {
- d = (void*) p->write.data + p->write.index - PA_PSTREAM_DESCRIPTOR_SIZE;
- l = ntohl(p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) - (p->write.index - PA_PSTREAM_DESCRIPTOR_SIZE);
- }
-
- if ((r = pa_iochannel_write(p->io, d, l)) < 0)
- goto die;
-
- p->write.index += r;
-
- if (p->write.index >= PA_PSTREAM_DESCRIPTOR_SIZE+ntohl(p->write.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH])) {
- assert(p->write.current);
- item_free(p->write.current, (void *) 1);
- p->write.current = NULL;
-
- if (p->drain_callback && !pa_pstream_is_pending(p))
- p->drain_callback(p, p->drain_userdata);
- }
-
- return;
-
-die:
- p->dead = 1;
- if (p->die_callback)
- p->die_callback(p, p->die_callback_userdata);
-}
-
-static void do_read(struct pa_pstream *p) {
- void *d;
- size_t l;
- ssize_t r;
- assert(p);
-
- if (p->read.index < PA_PSTREAM_DESCRIPTOR_SIZE) {
- d = (void*) p->read.descriptor + p->read.index;
- l = PA_PSTREAM_DESCRIPTOR_SIZE - p->read.index;
- } else {
- assert(p->read.data);
- d = (void*) p->read.data + p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE;
- l = ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) - (p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE);
- }
-
- if ((r = pa_iochannel_read(p->io, d, l)) <= 0)
- goto die;
-
- p->read.index += r;
-
- if (p->read.index == PA_PSTREAM_DESCRIPTOR_SIZE) {
- /* Reading of frame descriptor complete */
-
- /* Frame size too large */
- if (ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) > FRAME_SIZE_MAX)
- goto die;
-
- assert(!p->read.packet && !p->read.memblock);
-
- if (ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL]) == (uint32_t) -1) {
- /* Frame is a packet frame */
- p->read.packet = pa_packet_new(ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]));
- assert(p->read.packet);
- p->read.data = p->read.packet->data;
- } else {
- /* Frame is a memblock frame */
- p->read.memblock = pa_memblock_new(ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]));
- assert(p->read.memblock);
- p->read.data = p->read.memblock->data;
- }
-
- } else if (p->read.index > PA_PSTREAM_DESCRIPTOR_SIZE) {
- /* Frame payload available */
-
- if (p->read.memblock && p->recieve_memblock_callback) { /* Is this memblock data? Than pass it to the user */
- size_t l;
-
- l = (p->read.index - r) < PA_PSTREAM_DESCRIPTOR_SIZE ? p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE : (size_t) r;
-
- if (l > 0) {
- struct pa_memchunk chunk;
-
- chunk.memblock = p->read.memblock;
- chunk.index = p->read.index - PA_PSTREAM_DESCRIPTOR_SIZE - l;
- chunk.length = l;
-
- if (p->recieve_memblock_callback)
- p->recieve_memblock_callback(
- p,
- ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_CHANNEL]),
- (int32_t) ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_DELTA]),
- &chunk,
- p->recieve_memblock_callback_userdata);
- }
- }
-
- /* Frame complete */
- if (p->read.index >= ntohl(p->read.descriptor[PA_PSTREAM_DESCRIPTOR_LENGTH]) + PA_PSTREAM_DESCRIPTOR_SIZE) {
- if (p->read.memblock) {
- assert(!p->read.packet);
-
- pa_memblock_unref(p->read.memblock);
- p->read.memblock = NULL;
- } else {
- assert(p->read.packet);
-
- if (p->recieve_packet_callback)
- p->recieve_packet_callback(p, p->read.packet, p->recieve_packet_callback_userdata);
-
- pa_packet_unref(p->read.packet);
- p->read.packet = NULL;
- }
-
- p->read.index = 0;
- }
- }
-
- return;
-
-die:
- p->dead = 1;
- if (p->die_callback)
- p->die_callback(p, p->die_callback_userdata);
-
-}
-
-void pa_pstream_set_die_callback(struct pa_pstream *p, void (*callback)(struct pa_pstream *p, void *userdata), void *userdata) {
- assert(p && callback);
- p->die_callback = callback;
- p->die_callback_userdata = userdata;
-}
-
-int pa_pstream_is_pending(struct pa_pstream *p) {
- assert(p);
-
- if (p->dead)
- return 0;
-
- return p->write.current || !pa_queue_is_empty(p->send_queue);
-}
-
-void pa_pstream_set_drain_callback(struct pa_pstream *p, void (*cb)(struct pa_pstream *p, void *userdata), void *userdata) {
- assert(p);
-
- p->drain_callback = cb;
- p->drain_userdata = userdata;
-}
-
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