static gboolean
mpegts_base_get_tags_from_eit (MpegTSBase * base, GstMpegtsSection * section)
{
const GstMpegtsEIT *eit;
guint i;
MpegTSBaseProgram *program;
/* Early exit if it's not from the present/following table_id */
if (section->table_id != GST_MTS_TABLE_ID_EVENT_INFORMATION_ACTUAL_TS_PRESENT
&& section->table_id !=
GST_MTS_TABLE_ID_EVENT_INFORMATION_OTHER_TS_PRESENT)
return TRUE;
eit = gst_mpegts_section_get_eit (section);
if (G_UNLIKELY (eit == NULL))
return FALSE;
program = mpegts_base_get_program (base, section->subtable_extension);
GST_DEBUG
("program_id:0x%04x, table_id:0x%02x, actual_stream:%d, present_following:%d, program:%p",
section->subtable_extension, section->table_id, eit->actual_stream,
eit->present_following, program);
if (program && eit->present_following) {
for (i = 0; i < eit->events->len; i++) {
GstMpegtsEITEvent *event = g_ptr_array_index (eit->events, i);
const GstMpegtsDescriptor *desc;
if (event->running_status == RUNNING_STATUS_RUNNING) {
program->event_id = event->event_id;
if ((desc =
gst_mpegts_find_descriptor (event->descriptors,
GST_MTS_DESC_DVB_SHORT_EVENT))) {
gchar *name;
if (gst_mpegts_descriptor_parse_dvb_short_event (desc, NULL, &name,
NULL)) {
/* FIXME : Is it correct to post an event duration as a GST_TAG_DURATION ??? */
program->tags =
gst_tag_list_new (GST_TAG_TITLE, name, GST_TAG_DURATION,
event->duration * GST_SECOND, NULL);
g_free (name);
return TRUE;
}
}
}
}
}
return TRUE;
}
static void
mpegts_parse_reset_selected_programs (MpegTSParse2 * parse,
gchar * program_numbers)
{
GST_OBJECT_LOCK (parse);
if (parse->program_numbers)
g_free (parse->program_numbers);
parse->program_numbers = program_numbers;
if (*parse->program_numbers != '\0') {
gint program_number;
MpegTSParseProgram *program;
gchar **progs, **walk;
progs = g_strsplit (parse->program_numbers, ":", 0);
walk = progs;
while (*walk != NULL) {
program_number = strtol (*walk, NULL, 0);
program =
(MpegTSParseProgram *) mpegts_base_get_program ((MpegTSBase *) parse,
program_number);
if (program == NULL)
/* create the program, it will get activated once we get a PMT for it */
program = (MpegTSParseProgram *) mpegts_base_add_program ((MpegTSBase *)
parse, program_number, G_MAXUINT16);
program->selected = 2;
++walk;
}
g_strfreev (progs);
}
g_hash_table_foreach (((MpegTSBase *) parse)->programs,
foreach_program_activate_or_deactivate, parse);
if (parse->pads_to_remove || parse->pads_to_add)
parse->need_sync_program_pads = TRUE;
GST_OBJECT_UNLOCK (parse);
}
static gboolean
mpegts_base_apply_pmt (MpegTSBase * base, GstMpegtsSection * section)
{
const GstMpegtsPMT *pmt;
MpegTSBaseProgram *program, *old_program;
guint program_number;
gboolean initial_program = TRUE;
pmt = gst_mpegts_section_get_pmt (section);
if (G_UNLIKELY (pmt == NULL)) {
GST_ERROR ("Could not get PMT (corrupted ?)");
return FALSE;
}
/* FIXME : not so sure this is valid anymore */
if (G_UNLIKELY (base->seen_pat == FALSE)) {
GST_WARNING ("Got pmt without pat first. Returning");
/* remove the stream since we won't get another PMT otherwise */
mpegts_packetizer_remove_stream (base->packetizer, section->pid);
return TRUE;
}
program_number = section->subtable_extension;
GST_DEBUG ("Applying PMT (program_number:%d, pid:0x%04x)",
program_number, section->pid);
/* In order for stream switching to happen properly in decodebin(2),
* we need to first add the new pads (i.e. activate the new program)
* before removing the old ones (i.e. deactivating the old program)
*/
old_program = mpegts_base_get_program (base, program_number);
if (G_UNLIKELY (old_program == NULL))
goto no_program;
if (G_UNLIKELY (mpegts_base_is_same_program (base, old_program, section->pid,
pmt)))
goto same_program;
/* If the current program is active, this means we have a new program */
if (old_program->active) {
MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base);
old_program = mpegts_base_steal_program (base, program_number);
program = mpegts_base_new_program (base, program_number, section->pid);
program->patcount = old_program->patcount;
g_hash_table_insert (base->programs,
GINT_TO_POINTER (program_number), program);
/* Desactivate the old program */
/* FIXME : THIS IS BREAKING THE STREAM SWITCHING LOGIC !
* */
if (klass->can_remove_program (base, old_program)) {
mpegts_base_deactivate_program (base, old_program);
mpegts_base_free_program (old_program);
}
initial_program = FALSE;
} else
program = old_program;
/* activate program */
/* Ownership of pmt_info is given to the program */
mpegts_base_activate_program (base, program, section->pid, section, pmt,
initial_program);
return TRUE;
no_program:
{
GST_ERROR ("Attempted to apply a PMT on a program that wasn't created");
return TRUE;
}
same_program:
{
GST_DEBUG ("Not applying identical program");
return TRUE;
}
}
static gboolean
mpegts_base_apply_pat (MpegTSBase * base, GstMpegtsSection * section)
{
GPtrArray *pat = gst_mpegts_section_get_pat (section);
GPtrArray *old_pat;
MpegTSBaseProgram *program;
gint i;
if (G_UNLIKELY (pat == NULL))
return FALSE;
GST_INFO_OBJECT (base, "PAT");
/* Applying a new PAT does two things:
* * It adds the new programs to the list of programs this element handles
* and increments at the same time the number of times a program is referenced.
*
* * If there was a previously active PAT, It decrements the reference count
* of all program it used. If a program is no longer needed, it is removed.
*/
old_pat = base->pat;
base->pat = pat;
GST_LOG ("Activating new Program Association Table");
/* activate the new table */
for (i = 0; i < pat->len; ++i) {
GstMpegtsPatProgram *patp = g_ptr_array_index (pat, i);
program = mpegts_base_get_program (base, patp->program_number);
if (program) {
/* IF the program already existed, just check if the PMT PID changed */
if (program->pmt_pid != patp->network_or_program_map_PID) {
if (program->pmt_pid != G_MAXUINT16) {
/* pmt pid changed */
/* FIXME: when this happens it may still be pmt pid of another
* program, so setting to False may make it go through expensive
* path in is_psi unnecessarily */
MPEGTS_BIT_UNSET (base->known_psi, program->pmt_pid);
}
program->pmt_pid = patp->network_or_program_map_PID;
if (G_UNLIKELY (MPEGTS_BIT_IS_SET (base->known_psi, program->pmt_pid)))
GST_FIXME
("Refcounting issue. Setting twice a PMT PID (0x%04x) as know PSI",
program->pmt_pid);
MPEGTS_BIT_SET (base->known_psi, patp->network_or_program_map_PID);
}
} else {
/* Create a new program */
program =
mpegts_base_add_program (base, patp->program_number,
patp->network_or_program_map_PID);
}
/* We mark this program as being referenced by one PAT */
program->patcount += 1;
}
if (old_pat) {
MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base);
/* deactivate the old table */
GST_LOG ("Deactivating old Program Association Table");
for (i = 0; i < old_pat->len; ++i) {
GstMpegtsPatProgram *patp = g_ptr_array_index (old_pat, i);
program = mpegts_base_get_program (base, patp->program_number);
if (G_UNLIKELY (program == NULL)) {
GST_DEBUG_OBJECT (base, "broken PAT, duplicated entry for program %d",
patp->program_number);
continue;
}
if (--program->patcount > 0)
/* the program has been referenced by the new pat, keep it */
continue;
GST_INFO_OBJECT (base, "PAT removing program 0x%04x 0x%04x",
patp->program_number, patp->network_or_program_map_PID);
if (klass->can_remove_program (base, program)) {
mpegts_base_deactivate_program (base, program);
mpegts_base_remove_program (base, patp->program_number);
}
/* FIXME: when this happens it may still be pmt pid of another
* program, so setting to False may make it go through expensive
* path in is_psi unnecessarily */
if (G_UNLIKELY (MPEGTS_BIT_IS_SET (base->known_psi,
patp->network_or_program_map_PID))) {
GST_FIXME
("Program refcounting : Setting twice a pid (0x%04x) as known PSI",
patp->network_or_program_map_PID);
}
MPEGTS_BIT_SET (base->known_psi, patp->network_or_program_map_PID);
mpegts_packetizer_remove_stream (base->packetizer,
patp->network_or_program_map_PID);
}
g_ptr_array_unref (old_pat);
}
return TRUE;
}
g_return_val_if_fail (template != NULL, NULL);
g_return_val_if_fail (GST_IS_MPEGTS_PARSE (element), NULL);
g_return_val_if_fail (padname != NULL, NULL);
sscanf (padname + 8, "%d", &program_num);
GST_DEBUG_OBJECT (element, "padname:%s, program:%d", padname, program_num);
parse = GST_MPEGTS_PARSE (element);
tspad = mpegts_parse_create_tspad (parse, padname);
tspad->program_number = program_num;
/* Find if the program is already active */
parseprogram =
(MpegTSParseProgram *) mpegts_base_get_program (GST_MPEGTS_BASE (parse),
program_num);
if (parseprogram) {
tspad->program = parseprogram;
parseprogram->tspad = tspad;
}
pad = tspad->pad;
parse->srcpads = g_list_append (parse->srcpads, pad);
base->push_data = TRUE;
base->push_section = TRUE;
gst_pad_set_active (pad, TRUE);
stream_id = gst_pad_create_stream_id (pad, element, padname + 8);
event =
