/*
* cmyth_livetv_chain_request_block(cmyth_recorder_t file, unsigned long len)
*
* Scope: PUBLIC
*
* Description
*
* Request a file data block of a certain size, and return when the
* block has been transfered.
*
* Return Value:
*
* Sucess: number of bytes transfered
*
* Failure: an int containing -errno
*/
static int
cmyth_livetv_chain_request_block(cmyth_recorder_t rec, unsigned long len)
{
int ret, retry;
cmyth_dbg(CMYTH_DBG_DEBUG, "%s [%s:%d]: (trace) {\n", __FUNCTION__,
__FILE__, __LINE__);
if (!rec) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: no connection\n",
__FUNCTION__);
return -EINVAL;
}
pthread_mutex_lock(&mutex);
do {
retry = 0;
ret = cmyth_file_request_block(rec->rec_livetv_file, len);
if (ret == 0) { /* We've gotten to the end, need to progress in the chain */
/* Switch if there are files left in the chain */
PRINTF("**SSDEBUG:(cmyth_livetv_request_block): %s\n",
"reached end of stream must dooSwitcheroo");
retry = cmyth_livetv_chain_switch(rec, 1);
}
}
while (retry);
pthread_mutex_unlock(&mutex);
cmyth_dbg(CMYTH_DBG_DEBUG, "%s [%s:%d]: (trace) }\n",
__FUNCTION__, __FILE__, __LINE__);
return ret;
}
int cmyth_livetv_chain_read(cmyth_recorder_t rec, char *buf, unsigned long len)
{
int ret, retry;
cmyth_dbg(CMYTH_DBG_DEBUG, "%s [%s:%d]: (trace) {\n",
__FUNCTION__, __FILE__, __LINE__);
if (rec == NULL) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: no connection\n",
__FUNCTION__);
return -EINVAL;
}
do {
retry = 0;
ret = cmyth_file_read(rec->rec_livetv_file, buf, len);
if (ret == 0) {
/* eof, switch to next file */
PRINTF("**SSDEBUG:(cmyth_livetv_chain_read): %s\n",
"reached end of stream must dooSwitcheroo");
retry = cmyth_livetv_chain_switch(rec, 1);
}
} while(retry);
cmyth_dbg(CMYTH_DBG_DEBUG, "%s [%s:%d]: (trace) }\n",
__FUNCTION__, __FILE__, __LINE__);
return ret;
}
/* for calls from other modules where the mutex isn't set */
int
cmyth_livetv_chain_switch_last(cmyth_recorder_t rec)
{
int dir;
if (!rec) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: invalid args rec = %p\n",
__FUNCTION__, rec);
return 0;
}
if (!rec->rec_conn) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: invalid args rec->rec_conn = %p\n",
__FUNCTION__, rec->rec_conn);
return 0;
}
if(rec->rec_conn->conn_version < 26)
return 1;
pthread_mutex_lock(&mutex);
dir = rec->rec_livetv_chain->chain_ct
- rec->rec_livetv_chain->chain_current - 1;
PRINTF("#@@@@#SSDEBUG: switch file changing adjusted dir: %d\n", dir);
if(dir != 0) {
cmyth_livetv_chain_switch(rec, dir);
}
else {
rec->rec_livetv_chain->chain_switch_on_create=1;
}
pthread_mutex_unlock(&mutex);
return 1;
}
/*
* cmyth_livetv_chain_seek(cmyth_recorder_t file, long long offset, int whence)
*
* Scope: PUBLIC
*
* Description
*
* Seek to a new position in the file based on the value of whence:
* SEEK_SET
* The offset is set to offset bytes.
* SEEK_CUR
* The offset is set to the current position plus offset bytes.
* SEEK_END
* The offset is set to the size of the file minus offset bytes.
*
* Return Value:
*
* Sucess: 0
*
* Failure: an int containing -errno
*/
static long long
cmyth_livetv_chain_seek(cmyth_recorder_t rec, long long offset, int whence)
{
long long ret;
cmyth_file_t fp;
int cur, ct;
if (rec == NULL)
return -EINVAL;
ct = rec->rec_livetv_chain->chain_ct;
if (whence == SEEK_END) {
offset -= rec->rec_livetv_file->file_req;
for (cur = rec->rec_livetv_chain->chain_current; cur < ct; cur++) {
offset += rec->rec_livetv_chain->chain_files[cur]->file_length;
}
cur = rec->rec_livetv_chain->chain_current;
fp = rec->rec_livetv_chain->chain_files[cur];
whence = SEEK_CUR;
}
if (whence == SEEK_SET) {
for (cur = 0; cur < ct; cur++) {
fp = rec->rec_livetv_chain->chain_files[cur];
if (offset < (long long)fp->file_length)
break;
offset -= fp->file_length;
}
}
if (whence == SEEK_CUR) {
if (offset == 0) {
cur = rec->rec_livetv_chain->chain_current;
offset += rec->rec_livetv_chain->chain_files[cur]->file_req;
for (; cur > 0; cur--) {
offset += rec->rec_livetv_chain->chain_files[cur-1]->file_length;
}
return offset;
}
offset += fp->file_req;
while (offset > (long long)fp->file_length) {
cur++;
offset -= fp->file_length;
if(cur == ct)
return -1;
fp = rec->rec_livetv_chain->chain_files[cur];
}
while (offset < 0) {
cur--;
if(cur < 0)
return -1;
fp = rec->rec_livetv_chain->chain_files[cur];
offset += fp->file_length;
}
offset -= fp->file_req;
}
pthread_mutex_lock(&mutex);
ret = cmyth_file_seek(fp, offset, whence);
PRINTF("** SSDEBUG: new pos %lld after seek command\n", ret);
cur -= rec->rec_livetv_chain->chain_current;
if (ret >= 0 && cur) {
cmyth_livetv_chain_switch(rec, cur);
}
pthread_mutex_unlock(&mutex);
return ret;
}
/*
* cmyth_livetv_chain_setup(cmyth_recorder_t old_rec)
*
* Scope: PUBLIC
*
* Description
*
* Set up the file information the recorder needs to watch live
* tv. The recorder is supplied. This will be duplicated and
* released, so the caller can re-use the same variable to hold the
* return. The new copy of the recorder will have a livetv chain
* within it.
*
* Return Value:
*
* Success: A pointer to a new recorder structure with a livetvchain
*
* Failure: NULL but the recorder passed in is not released the
* caller needs to do this on a failure.
*/
cmyth_recorder_t
cmyth_livetv_chain_setup(cmyth_recorder_t rec, int tcp_rcvbuf,
void (*prog_update_callback)(cmyth_proginfo_t))
{
cmyth_recorder_t new_rec = NULL;
char url[1024];
cmyth_conn_t control;
cmyth_proginfo_t loc_prog, loc_prog2;
cmyth_file_t ft;
int i=0;
if (!rec) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: no recorder connection\n",
__FUNCTION__);
return NULL;
}
control = rec->rec_conn;
/* Get the current recording information */
loc_prog = cmyth_recorder_get_cur_proginfo(rec);
/* Since backend will pretty much lockup when trying to open an *
* empty file, like the dummy file first generated by dvd */
loc_prog2 = (cmyth_proginfo_t)ref_hold(loc_prog);
while(i++<5 && (loc_prog2 == NULL || (loc_prog2 && loc_prog2->proginfo_Length == 0))) {
usleep(200000);
if(loc_prog2)
ref_release(loc_prog2);
loc_prog2 = cmyth_recorder_get_cur_proginfo(rec);
loc_prog2 = cmyth_proginfo_get_detail(control, loc_prog2);
}
if (loc_prog == NULL) {
cmyth_dbg(CMYTH_DBG_DEBUG, "%s: could not get current filename\n",
__FUNCTION__);
goto out;
}
pthread_mutex_lock(&mutex);
sprintf(url, "myth://%s:%d%s",loc_prog->proginfo_hostname, rec->rec_port,
loc_prog->proginfo_pathname);
new_rec = cmyth_recorder_dup(rec);
if (new_rec == NULL) {
cmyth_dbg(CMYTH_DBG_DEBUG, "%s: cannot create recorder\n",
__FUNCTION__);
goto out;
}
ref_release(rec);
if(new_rec->rec_livetv_chain == NULL) {
cmyth_dbg(CMYTH_DBG_DEBUG, "%s: error no livetv_chain\n",
__FUNCTION__);
new_rec = NULL;
goto out;
}
if(cmyth_livetv_chain_has_url(new_rec, url) == -1) {
ft = cmyth_conn_connect_file(loc_prog, new_rec->rec_conn, 16*1024, tcp_rcvbuf);
if (!ft) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_conn_connect_file(%s) failed\n",
__FUNCTION__, url);
new_rec = NULL;
goto out;
}
if(cmyth_livetv_chain_add(new_rec, url, ft, loc_prog) == -1) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_livetv_chain_add(%s) failed\n",
__FUNCTION__, url);
new_rec = NULL;
goto out;
}
new_rec->rec_livetv_chain->prog_update_callback = prog_update_callback;
ref_release(ft);
cmyth_livetv_chain_switch(new_rec, 0);
}
ref_release(loc_prog);
out:
pthread_mutex_unlock(&mutex);
return new_rec;
}
/*
* cmyth_livetv_chain_update(cmyth_recorder_t rec, char * chainid, int buff)
*
* Scope: PUBLIC
*
* Description
*
* Called in response to the backend's notification of a chain update.
* The recorder is supplied and will be queried for the current recording
* to determine if a new file needs to be added to the chain of files
* in the live tv instance.
*
* Return Value:
*
* Success: 0
*
* Failure: -1
*/
int
cmyth_livetv_chain_update(cmyth_recorder_t rec, char * chainid,
int tcp_rcvbuf)
{
int ret=0;
char url[1024];
cmyth_conn_t control;
cmyth_proginfo_t loc_prog;
cmyth_file_t ft;
if (!rec) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: rec is NULL\n", __FUNCTION__);
goto out;
}
control = rec->rec_conn;
loc_prog = cmyth_recorder_get_cur_proginfo(rec);
pthread_mutex_lock(&mutex);
if(rec->rec_livetv_chain) {
if(strncmp(rec->rec_livetv_chain->chainid, chainid, strlen(chainid)) == 0) {
sprintf(url, "myth://%s:%d%s",loc_prog->proginfo_hostname, rec->rec_port,
loc_prog->proginfo_pathname);
/*
Now check if this file is in the recorder chain and if not
then open a new file transfer and add it to the chain.
*/
if(cmyth_livetv_chain_has_url(rec, url) == -1) {
ft = cmyth_conn_connect_file(loc_prog, rec->rec_conn, 16*1024, tcp_rcvbuf);
if (!ft) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_conn_connect_file(%s) failed\n",
__FUNCTION__, url);
ret = -1;
goto out;
}
if(cmyth_livetv_chain_add(rec, url, ft, loc_prog) == -1) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_livetv_chain_add(%s) failed\n",
__FUNCTION__, url);
ret = -1;
goto out;
}
ref_release(ft);
if(rec->rec_livetv_chain->chain_switch_on_create) {
cmyth_livetv_chain_switch(rec, LAST);
rec->rec_livetv_chain->chain_switch_on_create = 0;
}
}
}
else {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: chainid doesn't match recorder's chainid!!\n",
__FUNCTION__, url);
ret = -1;
}
}
else {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: rec_livetv_chain is NULL!!\n",
__FUNCTION__, url);
ret = -1;
}
ref_release(loc_prog);
out:
pthread_mutex_unlock(&mutex);
return ret;
}
/*
* cmyth_livetv_chain_setup(cmyth_recorder_t old_rec)
*
* Scope: PUBLIC
*
* Description
*
* Set up the file information the recorder needs to watch live
* tv. The recorder is supplied. This will be duplicated and
* released, so the caller can re-use the same variable to hold the
* return. The new copy of the recorder will have a livetv chain
* within it.
*
* Return Value:
*
* Success: A pointer to a new recorder structure with a livetvchain
*
* Failure: NULL but the recorder passed in is not released the
* caller needs to do this on a failure.
*/
cmyth_recorder_t
cmyth_livetv_chain_setup(cmyth_recorder_t rec, int tcp_rcvbuf,
void (*prog_update_callback)(cmyth_proginfo_t))
{
cmyth_recorder_t new_rec = NULL;
char url[1024];
cmyth_conn_t control;
cmyth_proginfo_t loc_prog;
cmyth_file_t ft;
if (!rec) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: no recorder connection\n",
__FUNCTION__);
return NULL;
}
control = rec->rec_conn;
/* Get the current recording information */
loc_prog = cmyth_recorder_get_cur_proginfo(rec);
if (loc_prog == NULL) {
cmyth_dbg(CMYTH_DBG_DEBUG, "%s: could not get current filename\n",
__FUNCTION__);
goto out;
}
pthread_mutex_lock(&mutex);
new_rec = cmyth_recorder_dup(rec);
if (new_rec == NULL) {
cmyth_dbg(CMYTH_DBG_DEBUG, "%s: cannot create recorder\n",
__FUNCTION__);
goto out;
}
ref_release(rec);
if(new_rec->rec_livetv_chain == NULL) {
cmyth_dbg(CMYTH_DBG_DEBUG, "%s: error no livetv_chain\n",
__FUNCTION__);
new_rec = NULL;
goto out;
}
sprintf(url, "myth://%s:%d%s", loc_prog->proginfo_hostname, rec->rec_port,
loc_prog->proginfo_pathname);
if(cmyth_livetv_chain_has_url(new_rec, url) == -1) {
new_rec->rec_livetv_chain->livetv_tcp_rcvbuf = tcp_rcvbuf;
ft = cmyth_conn_connect_file(loc_prog, new_rec->rec_conn, 4096, new_rec->rec_livetv_chain->livetv_tcp_rcvbuf);
if (!ft) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_conn_connect_file(%s) failed\n",
__FUNCTION__, url);
new_rec = NULL;
goto out;
}
}
if(cmyth_livetv_chain_add(new_rec, url, ft, loc_prog) == -1) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_livetv_chain_add(%s) failed\n",
__FUNCTION__, url);
new_rec = NULL;
ref_release(ft);
goto out;
}
new_rec->rec_livetv_chain->prog_update_callback = prog_update_callback;
ref_release(ft);
/* JLB: Manage program breaks
* Switch ON watch signal
*/
new_rec->rec_livetv_chain->livetv_watch = 1;
cmyth_livetv_chain_switch(new_rec, 0);
out:
pthread_mutex_unlock(&mutex);
ref_release(loc_prog);
return new_rec;
}
/*
* cmyth_livetv_chain_update(cmyth_recorder_t rec, char * chainid, int buff)
*
* Scope: PUBLIC
*
* Description
*
* Called in response to the backend's notification of a chain update.
* The recorder is supplied and will be queried for the current recording
* to determine if a new file needs to be added to the chain of files
* in the live tv instance.
*
* Return Value:
*
* Success: 0
*
* Failure: -1
*/
int
cmyth_livetv_chain_update(cmyth_recorder_t rec, char * chainid)
{
int ret;
char url[1024];
cmyth_proginfo_t loc_prog;
cmyth_file_t ft;
ret = 0;
if (!rec) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: rec is NULL\n", __FUNCTION__);
return -1;
}
/* JLB: Manage program break
* Skip chain update, it will doing later
*/
if (!rec->rec_livetv_chain) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: rec_livetv_chain is NULL\n",
__FUNCTION__, url);
return -1;
}
else {
if (rec->rec_livetv_chain->livetv_watch != 1) {
cmyth_dbg(CMYTH_DBG_DEBUG,
"%s: skip chain update\n",
__FUNCTION__);
return 0;
}
}
loc_prog = cmyth_recorder_get_cur_proginfo(rec);
if (!loc_prog) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: recorder is not recording\n",
__FUNCTION__);
return -1;
}
pthread_mutex_lock(&mutex);
if (strncmp(rec->rec_livetv_chain->chainid, chainid, strlen(chainid)) == 0) {
sprintf(url, "myth://%s:%d%s", loc_prog->proginfo_hostname, rec->rec_port,
loc_prog->proginfo_pathname);
/*
Now check if this file is in the recorder chain and if not
then open a new file transfer and add it to the chain.
*/
if (cmyth_livetv_chain_has_url(rec, url) == -1) {
ft = cmyth_conn_connect_file(loc_prog, rec->rec_conn, 4096, rec->rec_livetv_chain->livetv_tcp_rcvbuf);
if (!ft) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_conn_connect_file(%s) failed\n",
__FUNCTION__, url);
ret = -1;
goto out;
}
if (cmyth_livetv_chain_add(rec, url, ft, loc_prog) == -1) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_livetv_chain_add(%s) failed\n",
__FUNCTION__, url);
ret = -1;
ref_release(ft);
goto out;
}
ref_release(ft);
if (rec->rec_livetv_chain->chain_switch_on_create) {
cmyth_livetv_chain_switch(rec, LAST);
rec->rec_livetv_chain->chain_switch_on_create = 0;
}
}
}
else {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: chainid doesn't match recorder's chainid!!\n",
__FUNCTION__, url);
ret = -1;
}
out:
pthread_mutex_unlock(&mutex);
ref_release(loc_prog);
return ret;
}
