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partial implementation of native protocol

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@30 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-06-20 01:12:13 +00:00
parent a84f38e611
commit eecf602476
16 changed files with 683 additions and 113 deletions
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95
src/pstream.c
View file

@ -1,5 +1,6 @@
#include <stdlib.h>
#include <assert.h>
#include <netinet/in.h>
#include "pstream.h"
#include "queue.h"
@ -35,6 +36,8 @@ struct pstream {
struct queue *send_queue;
int dead;
void (*die_callback) (struct pstream *p, void *userdad);
void *die_callback_userdata;
struct {
struct item_info* current;
@ -54,10 +57,10 @@ struct pstream {
size_t index;
} read;
void (*recieve_packet_callback) (struct pstream *p, struct packet *packet, void *userdata);
int (*recieve_packet_callback) (struct pstream *p, struct packet *packet, void *userdata);
void *recieve_packet_callback_userdata;
void (*recieve_memblock_callback) (struct pstream *p, uint32_t channel, int32_t delta, struct memchunk *chunk, void *userdata);
int (*recieve_memblock_callback) (struct pstream *p, uint32_t channel, int32_t delta, struct memchunk *chunk, void *userdata);
void *recieve_memblock_callback_userdata;
};
@ -89,6 +92,8 @@ struct pstream *pstream_new(struct mainloop *m, struct iochannel *io) {
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 = mainloop_source_new_fixed(m, prepare_callback, p);
@ -165,7 +170,7 @@ void pstream_send_packet(struct pstream*p, struct packet *packet) {
i = malloc(sizeof(struct item_info));
assert(i);
i->type = PSTREAM_ITEM_PACKET;
i->packet = packet;
i->packet = packet_ref(packet);
queue_push(p->send_queue, i);
mainloop_source_enable(p->mainloop_source, 1);
@ -182,18 +187,20 @@ void pstream_send_memblock(struct pstream*p, uint32_t channel, int32_t delta, st
i->channel = channel;
i->delta = delta;
memblock_ref(i->chunk.memblock);
queue_push(p->send_queue, i);
mainloop_source_enable(p->mainloop_source, 1);
}
void pstream_set_recieve_packet_callback(struct pstream *p, void (*callback) (struct pstream *p, struct packet *packet, void *userdata), void *userdata) {
void pstream_set_recieve_packet_callback(struct pstream *p, int (*callback) (struct pstream *p, struct packet *packet, void *userdata), void *userdata) {
assert(p && callback);
p->recieve_packet_callback = callback;
p->recieve_packet_callback_userdata = userdata;
}
void pstream_set_recieve_memblock_callback(struct pstream *p, void (*callback) (struct pstream *p, uint32_t channel, int32_t delta, struct memchunk *chunk, void *userdata), void *userdata) {
void pstream_set_recieve_memblock_callback(struct pstream *p, int (*callback) (struct pstream *p, uint32_t channel, int32_t delta, struct memchunk *chunk, void *userdata), void *userdata) {
assert(p && callback);
p->recieve_memblock_callback = callback;
@ -211,15 +218,15 @@ static void prepare_next_write_item(struct pstream *p) {
if (p->write.current->type == PSTREAM_ITEM_PACKET) {
assert(p->write.current->packet);
p->write.data = p->write.current->packet->data;
p->write.descriptor[PSTREAM_DESCRIPTOR_LENGTH] = p->write.current->packet->length;
p->write.descriptor[PSTREAM_DESCRIPTOR_LENGTH] = htonl(p->write.current->packet->length);
p->write.descriptor[PSTREAM_DESCRIPTOR_CHANNEL] = 0;
p->write.descriptor[PSTREAM_DESCRIPTOR_DELTA] = 0;
} else {
assert(p->write.current->type == 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[PSTREAM_DESCRIPTOR_LENGTH] = p->write.current->chunk.length;
p->write.descriptor[PSTREAM_DESCRIPTOR_CHANNEL] = p->write.current->channel;
p->write.descriptor[PSTREAM_DESCRIPTOR_DELTA] = p->write.current->delta;
p->write.descriptor[PSTREAM_DESCRIPTOR_LENGTH] = htonl(p->write.current->chunk.length);
p->write.descriptor[PSTREAM_DESCRIPTOR_CHANNEL] = htonl(p->write.current->channel);
p->write.descriptor[PSTREAM_DESCRIPTOR_DELTA] = htonl(p->write.current->delta);
}
}
@ -247,17 +254,15 @@ static void do_write(struct pstream *p) {
l = PSTREAM_DESCRIPTOR_SIZE - p->write.index;
} else {
d = (void*) p->write.data + p->write.index - PSTREAM_DESCRIPTOR_SIZE;
l = p->write.descriptor[PSTREAM_DESCRIPTOR_LENGTH] - p->write.index - PSTREAM_DESCRIPTOR_SIZE;
l = ntohl(p->write.descriptor[PSTREAM_DESCRIPTOR_LENGTH]) - p->write.index - PSTREAM_DESCRIPTOR_SIZE;
}
if ((r = iochannel_write(p->io, d, l)) < 0) {
p->dead = 1;
return;
}
if ((r = iochannel_write(p->io, d, l)) < 0)
goto die;
p->write.index += r;
if (p->write.index >= PSTREAM_DESCRIPTOR_SIZE+p->write.descriptor[PSTREAM_DESCRIPTOR_LENGTH]) {
if (p->write.index >= PSTREAM_DESCRIPTOR_SIZE+ntohl(p->write.descriptor[PSTREAM_DESCRIPTOR_LENGTH])) {
assert(p->write.current);
item_free(p->write.current, (void *) 1);
p->write.current = NULL;
@ -265,6 +270,13 @@ static void do_write(struct pstream *p) {
if (p->send_callback && queue_is_empty(p->send_queue))
p->send_callback(p, p->send_callback_userdata);
}
return;
die:
p->dead = 1;
if (p->die_callback)
p->die_callback(p, p->die_callback_userdata);
}
static void do_read(struct pstream *p) {
@ -284,35 +296,31 @@ static void do_read(struct pstream *p) {
} else {
assert(p->read.data);
d = (void*) p->read.data + p->read.index - PSTREAM_DESCRIPTOR_SIZE;
l = p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH] - p->read.index - PSTREAM_DESCRIPTOR_SIZE;
}
if ((r = iochannel_read(p->io, d, l)) <= 0) {
p->dead = 1;
return;
l = ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH]) - p->read.index - PSTREAM_DESCRIPTOR_SIZE;
}
if ((r = iochannel_read(p->io, d, l)) <= 0)
goto die;
p->read.index += r;
if (p->read.index == PSTREAM_DESCRIPTOR_SIZE) {
/* Reading of frame descriptor complete */
/* Frame size too large */
if (p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH] > FRAME_SIZE_MAX) {
p->dead = 1;
return;
}
if (ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH]) > FRAME_SIZE_MAX)
goto die;
assert(!p->read.packet && !p->read.memblock);
if (p->read.descriptor[PSTREAM_DESCRIPTOR_CHANNEL] == 0) {
if (ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_CHANNEL]) == 0) {
/* Frame is a packet frame */
p->read.packet = packet_new(p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH]);
p->read.packet = packet_new(ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH]));
assert(p->read.packet);
p->read.data = p->read.packet->data;
} else {
/* Frame is a memblock frame */
p->read.memblock = memblock_new(p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH]);
p->read.memblock = memblock_new(ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH]));
assert(p->read.memblock);
p->read.data = p->read.memblock->data;
}
@ -320,7 +328,7 @@ static void do_read(struct pstream *p) {
} else if (p->read.index > PSTREAM_DESCRIPTOR_SIZE) {
/* Frame payload available */
if (p->read.memblock && p->recieve_memblock_callback) { /* Is this memblockd data? Than pass it to the user */
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 < PSTREAM_DESCRIPTOR_SIZE ? p->read.index - PSTREAM_DESCRIPTOR_SIZE : r;
@ -332,28 +340,51 @@ static void do_read(struct pstream *p) {
chunk.index = p->read.index - PSTREAM_DESCRIPTOR_SIZE - l;
chunk.length = l;
p->recieve_memblock_callback(p, p->read.descriptor[PSTREAM_DESCRIPTOR_CHANNEL], (int32_t) p->read.descriptor[PSTREAM_DESCRIPTOR_DELTA], &chunk, p->recieve_memblock_callback_userdata);
if (p->recieve_memblock_callback(p,
ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_CHANNEL]),
(int32_t) ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_DELTA]),
&chunk,
p->recieve_memblock_callback_userdata) < 0)
goto die;
}
}
/* Frame complete */
if (p->read.index >= p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH] + PSTREAM_DESCRIPTOR_SIZE) {
if (p->read.index >= ntohl(p->read.descriptor[PSTREAM_DESCRIPTOR_LENGTH]) + PSTREAM_DESCRIPTOR_SIZE) {
if (p->read.memblock) {
assert(!p->read.packet);
memblock_unref(p->read.memblock);
p->read.memblock = NULL;
} else {
int r = 0;
assert(p->read.packet);
if (p->recieve_packet_callback)
p->recieve_packet_callback(p, p->read.packet, p->recieve_packet_callback_userdata);
r = p->recieve_packet_callback(p, p->read.packet, p->recieve_packet_callback_userdata);
packet_unref(p->read.packet);
p->read.packet = NULL;
if (r < 0)
goto die;
}
p->read.index = 0;
}
}
return;
die:
p->dead = 1;
if (p->die_callback)
p->die_callback(p, p->die_callback_userdata);
}
void pstream_set_die_callback(struct pstream *p, void (*callback)(struct pstream *p, void *userdata), void *userdata) {
assert(p && callback);
p->die_callback = callback;
p->die_callback_userdata = userdata;
}