static void
mpegts_parse_reset (MpegTSBase * base)
{
MpegTSParse2 *parse = (MpegTSParse2 *) base;
/* Set the various know PIDs we are interested in */
/* CAT */
MPEGTS_BIT_SET (base->known_psi, 1);
/* NIT, ST */
MPEGTS_BIT_SET (base->known_psi, 0x10);
/* SDT, BAT, ST */
MPEGTS_BIT_SET (base->known_psi, 0x11);
/* EIT, ST, CIT (TS 102 323) */
MPEGTS_BIT_SET (base->known_psi, 0x12);
/* RST, ST */
MPEGTS_BIT_SET (base->known_psi, 0x13);
/* RNT (TS 102 323) */
MPEGTS_BIT_SET (base->known_psi, 0x16);
/* inband signalling */
MPEGTS_BIT_SET (base->known_psi, 0x1c);
/* measurement */
MPEGTS_BIT_SET (base->known_psi, 0x1d);
/* DIT */
MPEGTS_BIT_SET (base->known_psi, 0x1e);
/* SIT */
MPEGTS_BIT_SET (base->known_psi, 0x1f);
parse->first = TRUE;
parse->have_group_id = FALSE;
parse->group_id = G_MAXUINT;
g_list_free_full (parse->pending_buffers, (GDestroyNotify) gst_buffer_unref);
parse->pending_buffers = NULL;
parse->current_pcr = GST_CLOCK_TIME_NONE;
parse->previous_pcr = GST_CLOCK_TIME_NONE;
parse->bytes_since_pcr = 0;
parse->pcr_pid = parse->user_pcr_pid;
}
static void
mpegts_base_reset (MpegTSBase * base)
{
MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base);
mpegts_packetizer_clear (base->packetizer);
memset (base->is_pes, 0, 1024);
memset (base->known_psi, 0, 1024);
/* FIXME : Actually these are not *always* know SI streams
* depending on the variant of mpeg-ts being used. */
/* Known PIDs : PAT, TSDT, IPMP CIT */
MPEGTS_BIT_SET (base->known_psi, 0);
MPEGTS_BIT_SET (base->known_psi, 2);
MPEGTS_BIT_SET (base->known_psi, 3);
/* TDT, TOT, ST */
MPEGTS_BIT_SET (base->known_psi, 0x14);
/* network synchronization */
MPEGTS_BIT_SET (base->known_psi, 0x15);
/* ATSC */
MPEGTS_BIT_SET (base->known_psi, 0x1ffb);
/* FIXME : Commenting the Following lines is to be in sync with the following
* commit
*
* 61a885613316ce7657c36a6cd215b43f9dc67b79
* mpegtsparse: don't free PAT structure which may still be needed later
*/
/* if (base->pat != NULL) */
/* gst_structure_free (base->pat); */
/* base->pat = NULL; */
/* pmt pids will be added and removed dynamically */
gst_segment_init (&base->segment, GST_FORMAT_UNDEFINED);
base->last_seek_seqnum = (guint32) - 1;
base->mode = BASE_MODE_STREAMING;
base->seen_pat = FALSE;
base->seek_offset = -1;
base->upstream_live = FALSE;
base->queried_latency = FALSE;
g_hash_table_foreach_remove (base->programs, (GHRFunc) remove_each_program,
base);
if (klass->reset)
klass->reset (base);
}
static gboolean
mpegts_base_parse_atsc_mgt (MpegTSBase * base, GstMpegtsSection * section)
{
const GstMpegtsAtscMGT *mgt;
gint i;
mgt = gst_mpegts_section_get_atsc_mgt (section);
if (G_UNLIKELY (mgt == NULL))
return FALSE;
for (i = 0; i < mgt->tables->len; ++i) {
GstMpegtsAtscMGTTable *table = g_ptr_array_index (mgt->tables, i);
if ((table->table_type >= GST_MPEGTS_ATSC_MGT_TABLE_TYPE_EIT0 &&
table->table_type <= GST_MPEGTS_ATSC_MGT_TABLE_TYPE_EIT127) ||
(table->table_type >= GST_MPEGTS_ATSC_MGT_TABLE_TYPE_ETT0 &&
table->table_type <= GST_MPEGTS_ATSC_MGT_TABLE_TYPE_ETT127)) {
MPEGTS_BIT_SET (base->known_psi, table->pid);
}
}
return TRUE;
}
MpegTSBaseProgram *
mpegts_base_add_program (MpegTSBase * base,
gint program_number, guint16 pmt_pid)
{
MpegTSBaseProgram *program;
GST_DEBUG_OBJECT (base, "program_number : %d, pmt_pid : %d",
program_number, pmt_pid);
program = mpegts_base_new_program (base, program_number, pmt_pid);
/* Mark the PMT PID as being a known PSI PID */
if (G_UNLIKELY (MPEGTS_BIT_IS_SET (base->known_psi, pmt_pid))) {
GST_FIXME ("Refcounting. Setting twice a PID (0x%04x) as known PSI",
pmt_pid);
}
MPEGTS_BIT_SET (base->known_psi, pmt_pid);
g_hash_table_insert (base->programs,
GINT_TO_POINTER (program_number), program);
return program;
}
static void
mpegts_base_reset (MpegTSBase * base)
{
MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base);
mpegts_packetizer_clear (base->packetizer);
memset (base->is_pes, 0, 1024);
memset (base->known_psi, 0, 1024);
/* FIXME : Actually these are not *always* know SI streams
* depending on the variant of mpeg-ts being used. */
/* Known PIDs : PAT, TSDT, IPMP CIT */
MPEGTS_BIT_SET (base->known_psi, 0);
MPEGTS_BIT_SET (base->known_psi, 2);
MPEGTS_BIT_SET (base->known_psi, 3);
/* TDT, TOT, ST */
MPEGTS_BIT_SET (base->known_psi, 0x14);
/* network synchronization */
MPEGTS_BIT_SET (base->known_psi, 0x15);
/* ATSC */
MPEGTS_BIT_SET (base->known_psi, 0x1ffb);
if (base->pat) {
g_ptr_array_unref (base->pat);
base->pat = NULL;
}
gst_segment_init (&base->segment, GST_FORMAT_UNDEFINED);
base->last_seek_seqnum = (guint32) - 1;
base->mode = BASE_MODE_STREAMING;
base->seen_pat = FALSE;
base->seek_offset = -1;
base->upstream_live = FALSE;
base->queried_latency = FALSE;
g_hash_table_foreach_remove (base->programs, (GHRFunc) remove_each_program,
base);
if (klass->reset)
klass->reset (base);
}
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;
}
static void
mpegts_base_activate_program (MpegTSBase * base, MpegTSBaseProgram * program,
guint16 pmt_pid, GstMpegtsSection * section, const GstMpegtsPMT * pmt,
gboolean initial_program)
{
guint i;
MpegTSBaseClass *klass;
if (G_UNLIKELY (program->active))
return;
GST_DEBUG ("Activating program %d", program->program_number);
/* activate new pmt */
if (program->section)
gst_mpegts_section_unref (program->section);
program->section = gst_mpegts_section_ref (section);
program->pmt = pmt;
program->pmt_pid = pmt_pid;
program->pcr_pid = pmt->pcr_pid;
/* extract top-level registration_id if present */
program->registration_id =
get_registration_from_descriptors (pmt->descriptors);
GST_DEBUG ("program 0x%04x, registration_id %" SAFE_FOURCC_FORMAT,
program->program_number, SAFE_FOURCC_ARGS (program->registration_id));
for (i = 0; i < pmt->streams->len; ++i) {
GstMpegtsPMTStream *stream = g_ptr_array_index (pmt->streams, i);
switch (stream->stream_type) {
case GST_MPEGTS_STREAM_TYPE_SCTE_DSMCC_DCB:
case GST_MPEGTS_STREAM_TYPE_SCTE_SIGNALING:
{
guint32 registration_id =
get_registration_from_descriptors (stream->descriptors);
/* Not a private section stream */
if (registration_id != DRF_ID_CUEI && registration_id != DRF_ID_ETV1)
break;
/* Fall through on purpose - remove this PID from known_psi */
}
case GST_MPEGTS_STREAM_TYPE_PRIVATE_SECTIONS:
case GST_MPEGTS_STREAM_TYPE_MHEG:
case GST_MPEGTS_STREAM_TYPE_DSM_CC:
case GST_MPEGTS_STREAM_TYPE_DSMCC_A:
case GST_MPEGTS_STREAM_TYPE_DSMCC_B:
case GST_MPEGTS_STREAM_TYPE_DSMCC_C:
case GST_MPEGTS_STREAM_TYPE_DSMCC_D:
case GST_MPEGTS_STREAM_TYPE_SL_FLEXMUX_SECTIONS:
case GST_MPEGTS_STREAM_TYPE_METADATA_SECTIONS:
/* Set known PSI streams */
if (base->parse_private_sections)
MPEGTS_BIT_SET (base->known_psi, stream->pid);
break;
default:
if (G_UNLIKELY (MPEGTS_BIT_IS_SET (base->is_pes, stream->pid)))
GST_FIXME
("Refcounting issue. Setting twice a PID (0x%04x) as known PES",
stream->pid);
if (G_UNLIKELY (MPEGTS_BIT_IS_SET (base->known_psi, stream->pid))) {
GST_FIXME
("Refcounting issue. Setting a known PSI PID (0x%04x) as known PES",
stream->pid);
MPEGTS_BIT_UNSET (base->known_psi, stream->pid);
}
MPEGTS_BIT_SET (base->is_pes, stream->pid);
break;
}
mpegts_base_program_add_stream (base, program,
stream->pid, stream->stream_type, stream);
}
/* We add the PCR pid last. If that PID is already used by one of the media
* streams above, no new stream will be created */
mpegts_base_program_add_stream (base, program, pmt->pcr_pid, -1, NULL);
MPEGTS_BIT_SET (base->is_pes, pmt->pcr_pid);
program->active = TRUE;
program->initial_program = initial_program;
klass = GST_MPEGTS_BASE_GET_CLASS (base);
if (klass->program_started != NULL)
klass->program_started (base, program);
GST_DEBUG_OBJECT (base, "new pmt activated");
}
