#include "ipc.h"
#include "fd.h"
-static struct timeval announce_tv;
-static struct timeval data_send_barrier;
-static struct timeval eof_barrier;
-static struct timeval autoplay_barrier;
-
extern struct misc_meta_data *mmd;
-extern struct sender senders[];
-static char *map;
+extern void dccp_send_init(struct sender *);
+extern void http_send_init(struct sender *);
+extern void ortp_send_init(struct sender *);
+
+/** the list of supported senders */
+struct sender senders[] = {
+ {
+ .name = "http",
+ .init = http_send_init,
+ },
+ {
+ .name = "dccp",
+ .init = dccp_send_init,
+ },
+#ifdef HAVE_ORTP
+ {
+ .name = "ortp",
+ .init = ortp_send_init,
+ },
+#endif
+ {
+ .name = NULL,
+ }
+};
+
+/** The possible states of the afs socket. See \ref afs_socket. */
+enum afs_socket_status {
+ /** Socket is inactive. */
+ AFS_SOCKET_READY,
+ /** Socket fd was included in the write fd set for select(). */
+ AFS_SOCKET_CHECK_FOR_WRITE,
+ /** vss wrote a request to the socket and waits for afs to reply. */
+ AFS_SOCKET_AFD_PENDING
+};
+
+
+struct vss_task {
+ struct timeval announce_tv;
+ struct timeval data_send_barrier;
+ struct timeval eof_barrier;
+ struct timeval autoplay_barrier;
+ enum afs_socket_status afsss;
+ char *map;
+};
+
+static struct vss_task vss_task_struct, *vsst = &vss_task_struct;
/**
* Check if vss status flag \a P (playing) is set.
&& !(mmd->new_vss_status_flags & VSS_PLAYING);
}
+/**
+ * Get the data of the given chunk.
+ *
+ * \param chunk_num The number of the desired chunk.
+ * \param buf Chunk data.
+ * \param len Chunk length in bytes.
+ *
+ * \return Standard.
+ */
+int vss_get_chunk(long unsigned chunk_num, char **buf, size_t *len)
+{
+ if (!vsst->map || !vss_playing())
+ return -E_CHUNK;
+ if (chunk_num >= mmd->afd.afhi.chunks_total)
+ return -E_CHUNK;
+ afh_get_chunk(chunk_num, &mmd->afd.afhi, vsst->map, buf, len);
+ return 1;
+}
+
/**
* Initialize the virtual streaming system.
*
conf.announce_time_arg : 300,
autoplay_delay = conf.autoplay_delay_arg > 0?
conf.autoplay_delay_arg : 0;
- ms2tv(announce_time, &announce_tv);
- PARA_INFO_LOG("announce timeval: %lums\n", tv2ms(&announce_tv));
+ ms2tv(announce_time, &vsst->announce_tv);
+ PARA_INFO_LOG("announce timeval: %lums\n", tv2ms(&vsst->announce_tv));
for (i = 0; senders[i].name; i++) {
PARA_NOTICE_LOG("initializing %s sender\n", senders[i].name);
senders[i].init(&senders[i]);
}
free(hn);
free(home);
+ mmd->sender_cmd_data.cmd_num = -1;
if (conf.autoplay_given) {
struct timeval now, tmp;
mmd->vss_status_flags |= VSS_PLAYING;
mmd->new_vss_status_flags |= VSS_PLAYING;
gettimeofday(&now, NULL);
ms2tv(autoplay_delay, &tmp);
- tv_add(&now, &tmp, &autoplay_barrier);
+ tv_add(&now, &tmp, &vsst->autoplay_barrier);
}
}
static struct timeval the_timeout;
struct timeval now, next_chunk;
- if (vss_next() && map) {
+ if (vss_next() && vsst->map) {
/* only sleep a bit, nec*/
the_timeout.tv_sec = 0;
the_timeout.tv_usec = 100;
return &the_timeout;
}
gettimeofday(&now, NULL);
- if (chk_barrier("autoplay_delay", &now, &autoplay_barrier,
+ if (chk_barrier("autoplay_delay", &now, &vsst->autoplay_barrier,
&the_timeout, 1) < 0)
return &the_timeout;
- if (chk_barrier("eof", &now, &eof_barrier, &the_timeout, 1) < 0)
+ if (chk_barrier("eof", &now, &vsst->eof_barrier, &the_timeout, 1) < 0)
return &the_timeout;
- if (chk_barrier("data send", &now, &data_send_barrier,
+ if (chk_barrier("data send", &now, &vsst->data_send_barrier,
&the_timeout, 1) < 0)
return &the_timeout;
- if (!vss_playing() || !map)
+ if (!vss_playing() || !vsst->map)
return NULL;
compute_chunk_time(mmd->chunks_sent, &mmd->afd.afhi.chunk_tv,
&mmd->stream_start, &next_chunk);
static void vss_eof(void)
{
struct timeval now;
- int i;
char *tmp;
- if (!map) {
- for (i = 0; senders[i].name; i++)
- senders[i].shutdown_clients();
+ if (!vsst->map)
return;
- }
if (mmd->new_vss_status_flags & VSS_NOMORE)
mmd->new_vss_status_flags = VSS_NEXT;
gettimeofday(&now, NULL);
- tv_add(&mmd->afd.afhi.eof_tv, &now, &eof_barrier);
- munmap(map, mmd->size);
- map = NULL;
+ tv_add(&mmd->afd.afhi.eof_tv, &now, &vsst->eof_barrier);
+ para_munmap(vsst->map, mmd->size);
+ vsst->map = NULL;
mmd->chunks_sent = 0;
mmd->offset = 0;
mmd->afd.afhi.seconds_total = 0;
*/
void vss_get_header(char **buf, size_t *len)
{
- afh_get_header(&mmd->afd.afhi, map, buf, len);
+ afh_get_header(&mmd->afd.afhi, vsst->map, buf, len);
}
/**
*/
struct timeval *vss_chunk_time(void)
{
- if (!map)
+ if (!vsst->map)
return NULL;
return &mmd->afd.afhi.chunk_tv;
}
-/** The possible states of the afs socket. See \ref afs_socket. */
-enum afs_socket_status {
- /** Socket is inactive. */
- AFS_SOCKET_READY,
- /** Socket fd was included in the write fd set for select(). */
- AFS_SOCKET_CHECK_FOR_WRITE,
- /** vss wrote a request to the socket and waits for afs to reply. */
- AFS_SOCKET_AFD_PENDING
-};
-
-static enum afs_socket_status afsss;
+static int need_to_request_new_audio_file(void)
+{
+ if (vsst->map) /* have audio file */
+ return 0;
+ if (!vss_playing()) /* don't need one */
+ return 0;
+ if (mmd->new_vss_status_flags & VSS_NOMORE)
+ return 0;
+ if (vsst->afsss == AFS_SOCKET_AFD_PENDING) /* already requested one */
+ return 0;
+ return 1;
+}
/**
* Compute the timeout for para_server's main select-loop.
struct timeval *vss_preselect(fd_set *rfds, fd_set *wfds, int *max_fileno)
{
int i;
- struct timeval *tv;
+ struct timeval now;
- para_fd_set(afs_socket, rfds, max_fileno);
- if (!map)
- for (i = 0; senders[i].name; i++)
- senders[i].shutdown_clients();
- else {
- if (vss_next()) {
- vss_eof();
- tv = vss_compute_timeout();
- goto out;
- }
- }
- if (vss_paused() || vss_repos()) {
+ if (!vsst->map || vss_next() || vss_paused() || vss_repos())
for (i = 0; senders[i].name; i++)
senders[i].shutdown_clients();
- if (map) {
- struct timeval now;
+ if (vss_next())
+ vss_eof();
+ else if (vss_paused()) {
+ if (mmd->chunks_sent) {
gettimeofday(&now, NULL);
- if (!vss_paused() || mmd->chunks_sent)
- tv_add(&mmd->afd.afhi.eof_tv, &now, &eof_barrier);
- if (vss_repos())
- tv_add(&now, &announce_tv, &data_send_barrier);
+ tv_add(&mmd->afd.afhi.eof_tv, &now, &vsst->eof_barrier);
}
mmd->chunks_sent = 0;
- }
- if (vss_repos()) {
- mmd->new_vss_status_flags &= ~(VSS_REPOS);
+ } else if (vss_repos()) {
+ gettimeofday(&now, NULL);
+ tv_add(&now, &vsst->announce_tv, &vsst->data_send_barrier);
+ tv_add(&mmd->afd.afhi.eof_tv, &now, &vsst->eof_barrier);
+ mmd->chunks_sent = 0;
mmd->current_chunk = mmd->repos_request;
+ mmd->new_vss_status_flags &= ~VSS_REPOS;
}
- tv = vss_compute_timeout();
- if (tv)
- goto out;
- if (!map && vss_playing() &&
- !(mmd->new_vss_status_flags & VSS_NOMORE)) {
- if (afsss == AFS_SOCKET_READY ||
- afsss == AFS_SOCKET_CHECK_FOR_WRITE) {
- PARA_DEBUG_LOG("ready and playing, but no audio file\n");
- para_fd_set(afs_socket, wfds, max_fileno);
- afsss = AFS_SOCKET_CHECK_FOR_WRITE;
- }
+
+ if (need_to_request_new_audio_file()) {
+ PARA_DEBUG_LOG("ready and playing, but no audio file\n");
+ para_fd_set(afs_socket, wfds, max_fileno);
+ vsst->afsss = AFS_SOCKET_CHECK_FOR_WRITE;
+ } else
+ para_fd_set(afs_socket, rfds, max_fileno);
+ for (i = 0; senders[i].name; i++) {
+ if (!senders[i].pre_select)
+ continue;
+ senders[i].pre_select(max_fileno, rfds, wfds);
}
-out:
- return tv;
+ return vss_compute_timeout();
}
static int recv_afs_msg(int *fd, uint32_t *code, uint32_t *data)
ret = recvmsg(afs_socket, &msg, 0);
if (ret < 0)
return -ERRNO_TO_PARA_ERROR(errno);
- afsss = AFS_SOCKET_READY;
+ vsst->afsss = AFS_SOCKET_READY;
if (iov.iov_len != sizeof(buf))
return -E_AFS_SHORT_READ;
*code = *(uint32_t*)buf;
}
mmd->size = statbuf.st_size;
mmd->mtime = statbuf.st_mtime;
- map = para_mmap(mmd->size, PROT_READ, MAP_PRIVATE,
+ vsst->map = para_mmap(mmd->size, PROT_READ, MAP_PRIVATE,
passed_fd, 0);
close(passed_fd);
mmd->chunks_sent = 0;
mmd->num_played++;
mmd->new_vss_status_flags &= (~VSS_NEXT);
gettimeofday(&now, NULL);
- tv_add(&now, &announce_tv, &data_send_barrier);
+ tv_add(&now, &vsst->announce_tv, &vsst->data_send_barrier);
return;
err:
free(mmd->afd.afhi.chunk_table);
mmd->new_vss_status_flags = VSS_NEXT;
}
-void vss_post_select(fd_set *rfds, fd_set *wfds)
-{
- int ret;
-
- if (FD_ISSET(afs_socket, rfds))
- recv_afs_result();
- if (afsss != AFS_SOCKET_CHECK_FOR_WRITE || !FD_ISSET(afs_socket, wfds))
- return;
- PARA_NOTICE_LOG("requesting new fd from afs\n");
- ret = send_buffer(afs_socket, "new");
- afsss = AFS_SOCKET_AFD_PENDING;
-}
-/**
- * Get the data of the given chunk.
- *
- * \param chunk_num The number of the desired chunk.
- * \param buf Chunk data.
- * \param len Chunk length in bytes.
- *
- * \return Standard.
- */
-int vss_get_chunk(long unsigned chunk_num, char **buf, size_t *len)
-{
- if (!map || !vss_playing())
- return -E_CHUNK;
- if (chunk_num >= mmd->afd.afhi.chunks_total)
- return -E_CHUNK;
- afh_get_chunk(chunk_num, &mmd->afd.afhi, map, buf, len);
- return 1;
-}
-
/**
* Main sending function.
*
* each supported sender's send() function which is supposed to send out the data
* to all connected clients.
*/
-void vss_send_chunk(void)
+static void vss_send_chunk(void)
{
int i;
struct timeval now, due;
char *buf;
size_t len;
- if (!map || !vss_playing())
+ if (!vsst->map || !vss_playing())
return;
gettimeofday(&now, NULL);
compute_chunk_time(mmd->chunks_sent, &mmd->afd.afhi.chunk_tv,
&mmd->stream_start, &due);
if (tv_diff(&due, &now, NULL) > 0)
return;
- if (chk_barrier("eof", &now, &eof_barrier, &due, 1) < 0)
+ if (chk_barrier("eof", &now, &vsst->eof_barrier, &due, 1) < 0)
return;
- if (chk_barrier("data send", &now, &data_send_barrier,
+ if (chk_barrier("data send", &now, &vsst->data_send_barrier,
&due, 1) < 0)
return;
mmd->new_vss_status_flags &= ~VSS_REPOS;
if (mmd->current_chunk >= mmd->afd.afhi.chunks_total) { /* eof */
mmd->new_vss_status_flags |= VSS_NEXT;
- return vss_eof();
+ return;
}
/*
* We call the send function also in case of empty chunks as they
mmd->offset = tv2ms(&tmp);
mmd->events++;
}
- afh_get_chunk(mmd->current_chunk, &mmd->afd.afhi, map, &buf, &len);
+ afh_get_chunk(mmd->current_chunk, &mmd->afd.afhi, vsst->map, &buf, &len);
for (i = 0; senders[i].name; i++)
senders[i].send(mmd->current_chunk, mmd->chunks_sent, buf, len);
mmd->new_vss_status_flags |= VSS_PLAYING;
mmd->chunks_sent++;
mmd->current_chunk++;
}
+
+void vss_post_select(fd_set *rfds, fd_set *wfds)
+{
+ int ret, i;
+
+ if (mmd->sender_cmd_data.cmd_num >= 0) {
+ int num = mmd->sender_cmd_data.cmd_num,
+ s = mmd->sender_cmd_data.sender_num;
+
+ if (senders[s].client_cmds[num])
+ senders[s].client_cmds[num](&mmd->sender_cmd_data);
+ mmd->sender_cmd_data.cmd_num = -1;
+ }
+ if (vsst->afsss != AFS_SOCKET_CHECK_FOR_WRITE) {
+ if (FD_ISSET(afs_socket, rfds))
+ recv_afs_result();
+ } else if (FD_ISSET(afs_socket, wfds)) {
+ PARA_NOTICE_LOG("requesting new fd from afs\n");
+ ret = send_buffer(afs_socket, "new");
+ vsst->afsss = AFS_SOCKET_AFD_PENDING;
+ }
+ for (i = 0; senders[i].name; i++) {
+ if (!senders[i].post_select)
+ continue;
+ senders[i].post_select(rfds, wfds);
+ }
+ vss_send_chunk();
+}