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tsdemux: Detect and handle scrambled packets

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Users (tsdemux/mpegtsparse) can decide what to do with that
This commit is contained in:
Edward Hervey 2012-05-18 10:13:19 +02:00 committed by Sebastian Dröge
parent fa4b92e743
commit 8a4fd8358d
1 changed files with 17 additions and 2 deletions
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19
gst/mpegtsdemux/mpegtspacketizer.c
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@ -338,7 +338,7 @@ mpegts_packetizer_parse_adaptation_field_control (MpegTSPacketizer2 *
return TRUE; return TRUE;
} }
static gboolean static MpegTSPacketizerPacketReturn
mpegts_packetizer_parse_packet (MpegTSPacketizer2 * packetizer, mpegts_packetizer_parse_packet (MpegTSPacketizer2 * packetizer,
MpegTSPacketizerPacket * packet) MpegTSPacketizerPacket * packet)
{ {
@ -347,11 +347,26 @@ mpegts_packetizer_parse_packet (MpegTSPacketizer2 * packetizer,
data = packet->data_start; data = packet->data_start;
data++; data++;
/* transport_error_indicator 1 */
if (G_UNLIKELY (*data >> 7))
return PACKET_BAD;
/* payload_unit_start_indicator 1 */
packet->payload_unit_start_indicator = (*data >> 6) & 0x01; packet->payload_unit_start_indicator = (*data >> 6) & 0x01;
/* transport_priority 1 */
/* PID 13 */
packet->pid = GST_READ_UINT16_BE (data) & 0x1FFF; packet->pid = GST_READ_UINT16_BE (data) & 0x1FFF;
data += 2; data += 2;
/* transport_scrambling_control 2 */
if (G_UNLIKELY (*data >> 6))
return PACKET_BAD;
/* adaptation_field_control 2 */
packet->adaptation_field_control = (*data >> 4) & 0x03; packet->adaptation_field_control = (*data >> 4) & 0x03;
/* continuity_counter 4 */
packet->continuity_counter = *data & 0x0F; packet->continuity_counter = *data & 0x0F;
data += 1; data += 1;
@ -368,7 +383,7 @@ mpegts_packetizer_parse_packet (MpegTSPacketizer2 * packetizer,
else else
packet->payload = NULL; packet->payload = NULL;
return TRUE; return PACKET_OK;
} }
static gboolean static gboolean