static void mpegts_base_program_remove_stream (MpegTSBase * base, MpegTSBaseProgram * program, guint16 pid) { MpegTSBaseClass *klass; MpegTSBaseStream *stream = program->streams[pid]; GST_DEBUG ("pid:0x%04x", pid); if (G_UNLIKELY (stream == NULL)) { /* Can happen if the PCR PID is the same as a audio/video PID */ GST_DEBUG ("Stream already removed"); return; } klass = GST_MPEGTS_BASE_GET_CLASS (base); /* If subclass needs it, inform it of the stream we are about to remove */ if (klass->stream_removed) klass->stream_removed (base, stream); program->stream_list = g_list_remove_all (program->stream_list, stream); g_free (stream); program->streams[pid] = NULL; }
static inline void mpegts_base_flush (MpegTSBase * base, gboolean hard) { MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base); /* Call implementation */ if (klass->flush) klass->flush (base, hard); }
static void mpegts_base_deactivate_program (MpegTSBase * base, MpegTSBaseProgram * program) { gint i; MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base); if (G_UNLIKELY (program->active == FALSE)) return; GST_DEBUG_OBJECT (base, "Deactivating PMT"); program->active = FALSE; if (program->pmt) { for (i = 0; i < program->pmt->streams->len; ++i) { GstMpegTsPMTStream *stream = g_ptr_array_index (program->pmt->streams, i); mpegts_base_program_remove_stream (base, program, stream->pid); /* Only unset the is_pes/known_psi bit if the PID isn't used in any other active * program */ if (!mpegts_pid_in_active_programs (base, stream->pid)) { switch (stream->stream_type) { case GST_MPEG_TS_STREAM_TYPE_PRIVATE_SECTIONS: case GST_MPEG_TS_STREAM_TYPE_MHEG: case GST_MPEG_TS_STREAM_TYPE_DSM_CC: case GST_MPEG_TS_STREAM_TYPE_DSMCC_A: case GST_MPEG_TS_STREAM_TYPE_DSMCC_B: case GST_MPEG_TS_STREAM_TYPE_DSMCC_C: case GST_MPEG_TS_STREAM_TYPE_DSMCC_D: case GST_MPEG_TS_STREAM_TYPE_SL_FLEXMUX_SECTIONS: case GST_MPEG_TS_STREAM_TYPE_METADATA_SECTIONS: /* Set known PSI streams */ if (base->parse_private_sections) MPEGTS_BIT_UNSET (base->known_psi, stream->pid); break; default: MPEGTS_BIT_UNSET (base->is_pes, stream->pid); break; } } } /* remove pcr stream */ /* FIXME : This might actually be shared with another stream ? */ mpegts_base_program_remove_stream (base, program, program->pcr_pid); if (!mpegts_pid_in_active_programs (base, program->pcr_pid)) MPEGTS_BIT_UNSET (base->is_pes, program->pcr_pid); GST_DEBUG ("program stream_list is now %p", program->stream_list); } /* Inform subclasses we're deactivating this program */ if (klass->program_stopped) klass->program_stopped (base, program); }
static inline GstFlowReturn mpegts_base_drain (MpegTSBase * base) { MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base); /* Call implementation */ if (klass->drain) return klass->drain (base); return GST_FLOW_OK; }
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 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 MpegTSBaseStream * mpegts_base_program_add_stream (MpegTSBase * base, MpegTSBaseProgram * program, guint16 pid, guint8 stream_type, GstMpegtsPMTStream * stream) { MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base); MpegTSBaseStream *bstream; GST_DEBUG ("pid:0x%04x, stream_type:0x%03x", pid, stream_type); if (G_UNLIKELY (program->streams[pid])) { if (stream_type != 0xff) GST_WARNING ("Stream already present !"); return NULL; } bstream = g_malloc0 (base->stream_size); bstream->pid = pid; bstream->stream_type = stream_type; bstream->stream = stream; if (stream) { bstream->registration_id = get_registration_from_descriptors (stream->descriptors); GST_DEBUG ("PID 0x%04x, registration_id %" SAFE_FOURCC_FORMAT, bstream->pid, SAFE_FOURCC_ARGS (bstream->registration_id)); } program->streams[pid] = bstream; program->stream_list = g_list_append (program->stream_list, bstream); if (klass->stream_added) klass->stream_added (base, bstream, program); return bstream; }
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; }
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"); }
gboolean mpegts_base_handle_seek_event (MpegTSBase * base, GstPad * pad, GstEvent * event) { MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base); GstFlowReturn ret = GST_FLOW_ERROR; gdouble rate; gboolean flush; GstFormat format; GstSeekFlags flags; GstSeekType start_type, stop_type; gint64 start, stop; GstEvent *flush_event = NULL; gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start, &stop_type, &stop); if (format != GST_FORMAT_TIME) return FALSE; if (GST_EVENT_SEQNUM (event) == base->last_seek_seqnum) { GST_DEBUG_OBJECT (base, "Skipping already handled seek"); return TRUE; } if (base->mode == BASE_MODE_PUSHING) { /* First try if upstream supports seeking in TIME format */ if (gst_pad_push_event (base->sinkpad, gst_event_ref (event))) { GST_DEBUG ("upstream handled SEEK event"); return TRUE; } /* If the subclass can seek, do that */ if (klass->seek) { ret = klass->seek (base, event); if (G_UNLIKELY (ret != GST_FLOW_OK)) GST_WARNING ("seeking failed %s", gst_flow_get_name (ret)); else { GstEvent *new_seek; if (GST_CLOCK_TIME_IS_VALID (base->seek_offset)) { base->mode = BASE_MODE_SEEKING; new_seek = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, GST_SEEK_TYPE_SET, base->seek_offset, GST_SEEK_TYPE_NONE, -1); gst_event_set_seqnum (new_seek, GST_EVENT_SEQNUM (event)); if (!gst_pad_push_event (base->sinkpad, new_seek)) ret = GST_FLOW_ERROR; else base->last_seek_seqnum = GST_EVENT_SEQNUM (event); } base->mode = BASE_MODE_PUSHING; } } else { GST_WARNING ("subclass has no seek implementation"); } return ret == GST_FLOW_OK; } if (!klass->seek) { GST_WARNING ("subclass has no seek implementation"); return FALSE; } if (rate <= 0.0) { GST_WARNING ("Negative rate not supported"); return FALSE; } GST_DEBUG ("seek event, rate: %f start: %" GST_TIME_FORMAT " stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start), GST_TIME_ARGS (stop)); flush = flags & GST_SEEK_FLAG_FLUSH; /* stop streaming, either by flushing or by pausing the task */ base->mode = BASE_MODE_SEEKING; if (flush) { GST_DEBUG_OBJECT (base, "sending flush start"); flush_event = gst_event_new_flush_start (); gst_event_set_seqnum (flush_event, GST_EVENT_SEQNUM (event)); gst_pad_push_event (base->sinkpad, gst_event_ref (flush_event)); GST_MPEGTS_BASE_GET_CLASS (base)->push_event (base, flush_event); } else gst_pad_pause_task (base->sinkpad); /* wait for streaming to finish */ GST_PAD_STREAM_LOCK (base->sinkpad); if (flush) { /* send a FLUSH_STOP for the sinkpad, since we need data for seeking */ GST_DEBUG_OBJECT (base, "sending flush stop"); flush_event = gst_event_new_flush_stop (TRUE); gst_event_set_seqnum (flush_event, GST_EVENT_SEQNUM (event)); /* ref for it to be reused later */ gst_pad_push_event (base->sinkpad, gst_event_ref (flush_event)); /* And actually flush our pending data but allow to preserve some info * to perform the seek */ mpegts_base_flush (base, FALSE); mpegts_packetizer_flush (base->packetizer, FALSE); } if (flags & (GST_SEEK_FLAG_SEGMENT)) { GST_WARNING ("seek flags 0x%x are not supported", (int) flags); goto done; } /* If the subclass can seek, do that */ ret = klass->seek (base, event); if (G_UNLIKELY (ret != GST_FLOW_OK)) GST_WARNING ("seeking failed %s", gst_flow_get_name (ret)); else base->last_seek_seqnum = GST_EVENT_SEQNUM (event); if (flush_event) { /* if we sent a FLUSH_START, we now send a FLUSH_STOP */ GST_DEBUG_OBJECT (base, "sending flush stop"); GST_MPEGTS_BASE_GET_CLASS (base)->push_event (base, flush_event); flush_event = NULL; } done: if (flush_event) gst_event_unref (flush_event); gst_pad_start_task (base->sinkpad, (GstTaskFunction) mpegts_base_loop, base, NULL); GST_PAD_STREAM_UNLOCK (base->sinkpad); return ret == GST_FLOW_OK; }
static GstFlowReturn mpegts_base_chain (GstPad * pad, GstObject * parent, GstBuffer * buf) { GstFlowReturn res = GST_FLOW_OK; MpegTSBase *base; MpegTSPacketizerPacketReturn pret; MpegTSPacketizer2 *packetizer; MpegTSPacketizerPacket packet; MpegTSBaseClass *klass; base = GST_MPEGTS_BASE (parent); klass = GST_MPEGTS_BASE_GET_CLASS (base); packetizer = base->packetizer; if (klass->input_done) gst_buffer_ref (buf); if (GST_BUFFER_IS_DISCONT (buf)) { GST_DEBUG_OBJECT (base, "Got DISCONT buffer, flushing"); res = mpegts_base_drain (base); if (G_UNLIKELY (res != GST_FLOW_OK)) return res; mpegts_base_flush (base, FALSE); /* In the case of discontinuities in push-mode with TIME segment * we want to drop all previous observations (hard:TRUE) from * the packetizer */ if (base->mode == BASE_MODE_PUSHING && base->segment.format == GST_FORMAT_TIME) mpegts_packetizer_flush (base->packetizer, TRUE); else mpegts_packetizer_flush (base->packetizer, FALSE); } mpegts_packetizer_push (base->packetizer, buf); while (res == GST_FLOW_OK) { pret = mpegts_packetizer_next_packet (base->packetizer, &packet); /* If we don't have enough data, return */ if (G_UNLIKELY (pret == PACKET_NEED_MORE)) break; if (G_UNLIKELY (pret == PACKET_BAD)) { /* bad header, skip the packet */ GST_DEBUG_OBJECT (base, "bad packet, skipping"); goto next; } if (klass->inspect_packet) klass->inspect_packet (base, &packet); /* If it's a known PES, push it */ if (MPEGTS_BIT_IS_SET (base->is_pes, packet.pid)) { /* push the packet downstream */ if (base->push_data) res = klass->push (base, &packet, NULL); } else if (packet.payload && MPEGTS_BIT_IS_SET (base->known_psi, packet.pid)) { /* base PSI data */ GList *others, *tmp; GstMpegtsSection *section; section = mpegts_packetizer_push_section (packetizer, &packet, &others); if (section) mpegts_base_handle_psi (base, section); if (G_UNLIKELY (others)) { for (tmp = others; tmp; tmp = tmp->next) mpegts_base_handle_psi (base, (GstMpegtsSection *) tmp->data); g_list_free (others); } /* we need to push section packet downstream */ if (base->push_section) res = klass->push (base, &packet, section); } else if (packet.payload && packet.pid != 0x1fff) GST_LOG ("PID 0x%04x Saw packet on a pid we don't handle", packet.pid); next: mpegts_packetizer_clear_packet (base->packetizer, &packet); } if (klass->input_done) { if (res == GST_FLOW_OK) res = klass->input_done (base, buf); else gst_buffer_unref (buf); } return res; }
static GstFlowReturn mpegts_base_chain (GstPad * pad, GstObject * parent, GstBuffer * buf) { GstFlowReturn res = GST_FLOW_OK; MpegTSBase *base; MpegTSPacketizerPacketReturn pret; MpegTSPacketizer2 *packetizer; MpegTSPacketizerPacket packet; MpegTSBaseClass *klass; base = GST_MPEGTS_BASE (parent); klass = GST_MPEGTS_BASE_GET_CLASS (base); packetizer = base->packetizer; if (G_UNLIKELY (base->queried_latency == FALSE)) { query_upstream_latency (base); } if (klass->input_done) gst_buffer_ref (buf); mpegts_packetizer_push (base->packetizer, buf); while (res == GST_FLOW_OK) { pret = mpegts_packetizer_next_packet (base->packetizer, &packet); /* If we don't have enough data, return */ if (G_UNLIKELY (pret == PACKET_NEED_MORE)) break; if (G_UNLIKELY (pret == PACKET_BAD)) { /* bad header, skip the packet */ GST_DEBUG_OBJECT (base, "bad packet, skipping"); goto next; } /* If it's a known PES, push it */ if (MPEGTS_BIT_IS_SET (base->is_pes, packet.pid)) { /* push the packet downstream */ if (base->push_data) res = klass->push (base, &packet, NULL); } else if (packet.payload && MPEGTS_BIT_IS_SET (base->known_psi, packet.pid)) { /* base PSI data */ GList *others, *tmp; GstMpegTsSection *section; section = mpegts_packetizer_push_section (packetizer, &packet, &others); if (section) mpegts_base_handle_psi (base, section); if (G_UNLIKELY (others)) { for (tmp = others; tmp; tmp = tmp->next) mpegts_base_handle_psi (base, (GstMpegTsSection *) tmp->data); g_list_free (others); } /* we need to push section packet downstream */ if (base->push_section) res = klass->push (base, &packet, section); } else if (packet.payload && packet.pid != 0x1fff) GST_LOG ("PID 0x%04x Saw packet on a pid we don't handle", packet.pid); next: mpegts_packetizer_clear_packet (base->packetizer, &packet); } if (klass->input_done) { if (res == GST_FLOW_OK) res = klass->input_done (base, buf); else gst_buffer_unref (buf); } return res; }