diff options
author | Lennart Poettering <lennart@poettering.net> | 2004-07-17 14:12:30 +0000 |
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committer | Lennart Poettering <lennart@poettering.net> | 2004-07-17 14:12:30 +0000 |
commit | 41f6aea8fdbc744c13bc461056a2d694a5c4d06f (patch) | |
tree | 1e23911c1f61c66df3fba272af53475508a7a7ce /src/pstream.c | |
parent | 563201e128d600ec1ae4a33ca81d03b776501f82 (diff) |
rename src to polyp
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/pstream.c')
-rw-r--r-- | src/pstream.c | 457 |
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; -} - |