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authorZaheer Abbas Merali <zaheerabbas@merali.org>2008-03-04 17:49:15 +0000
committerZaheer Abbas Merali <zaheerabbas@merali.org>2008-03-04 17:49:15 +0000
commit15ac9f5a1398cc7a65f5d44fd53452c2cdf27bc6 (patch)
tree2948871da13b56e7cd8843112ecca95cca212aa6 /gst/mpegtsparse
parentd6f82ebffc13278b81ec811ff6f2eabfab9d55ec (diff)
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gst/mpegtsparse/: Add parsing of cable delivery system descriptor.
Original commit message from CVS: * gst/mpegtsparse/gstmpegdesc.h: * gst/mpegtsparse/mpegtspacketizer.c: Add parsing of cable delivery system descriptor.
Diffstat (limited to 'gst/mpegtsparse')
-rw-r--r--gst/mpegtsparse/gstmpegdesc.h7
-rw-r--r--gst/mpegtsparse/mpegtspacketizer.c87
2 files changed, 94 insertions, 0 deletions
diff --git a/gst/mpegtsparse/gstmpegdesc.h b/gst/mpegtsparse/gstmpegdesc.h
index 1003c801..494a2498 100644
--- a/gst/mpegtsparse/gstmpegdesc.h
+++ b/gst/mpegtsparse/gstmpegdesc.h
@@ -286,6 +286,13 @@
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_transmission_mode(desc) (desc[8] & 0x06)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_other_frequency(desc) ((desc[8] & 0x01) == 0x01)
+/* DVB Cable Delivery System Descriptor */
+#define DESC_DVB_CABLE_DELIVERY_SYSTEM_frequency(desc) (desc + 2)
+#define DESC_DVB_CABLE_DELIVERY_SYSTEM_fec_outer(desc) (desc[7] & 0x0F)
+#define DESC_DVB_CABLE_DELIVERY_SYSTEM_modulation(desc) (desc[8])
+#define DESC_DVB_CABLE_DELIVERY_SYSTEM_symbol_rate(desc) (desc + 9)
+#define DESC_DVB_CABLE_DELIVERY_SYSTEM_fec_inner(desc) (desc[12] & 0x0F)
+
typedef struct {
guint n_desc;
guint8 data_length;
diff --git a/gst/mpegtsparse/mpegtspacketizer.c b/gst/mpegtsparse/mpegtspacketizer.c
index cc361e61..6e80f051 100644
--- a/gst/mpegtsparse/mpegtspacketizer.c
+++ b/gst/mpegtsparse/mpegtspacketizer.c
@@ -935,6 +935,93 @@ mpegts_packetizer_parse_nit (MpegTSPacketizer * packetizer,
"other-frequency", G_TYPE_BOOLEAN, other_frequency, NULL);
gst_structure_set (transport, "delivery", GST_TYPE_STRUCTURE,
delivery_structure, NULL);
+ } else if ((delivery =
+ gst_mpeg_descriptor_find (mpegdescriptor,
+ DESC_DVB_CABLE_DELIVERY_SYSTEM))) {
+
+ guint8 *frequency_bcd =
+ DESC_DVB_CABLE_DELIVERY_SYSTEM_frequency (delivery);
+ guint32 frequency =
+ 10 * ((frequency_bcd[3] & 0x0F) +
+ 10 * ((frequency_bcd[3] & 0xF0) >> 4) +
+ 100 * (frequency_bcd[2] & 0x0F) +
+ 1000 * ((frequency_bcd[2] & 0xF0) >> 4) +
+ 10000 * (frequency_bcd[1] & 0x0F) +
+ 100000 * ((frequency_bcd[1] & 0xF0) >> 4) +
+ 1000000 * (frequency_bcd[0] & 0x0F) +
+ 10000000 * ((frequency_bcd[0] & 0xF0) >> 4));
+ guint8 modulation =
+ DESC_DVB_CABLE_DELIVERY_SYSTEM_modulation (delivery);
+ gchar *modulation_str;
+ guint8 *symbol_rate_bcd =
+ DESC_DVB_CABLE_DELIVERY_SYSTEM_symbol_rate (delivery);
+ guint32 symbol_rate =
+ (symbol_rate_bcd[2] & 0x0F) +
+ 10 * ((symbol_rate_bcd[2] & 0xF0) >> 4) +
+ 100 * (symbol_rate_bcd[1] & 0x0F) +
+ 1000 * ((symbol_rate_bcd[1] & 0xF0) >> 4) +
+ 10000 * (symbol_rate_bcd[0] & 0x0F) +
+ 100000 * ((symbol_rate_bcd[0] & 0xF0) >> 4);
+ guint8 fec_inner = DESC_DVB_CABLE_DELIVERY_SYSTEM_fec_inner (delivery);
+ gchar *fec_inner_str;
+
+ switch (fec_inner) {
+ case 0:
+ fec_inner_str = "undefined";
+ break;
+ case 1:
+ fec_inner_str = "1/2";
+ break;
+ case 2:
+ fec_inner_str = "2/3";
+ break;
+ case 3:
+ fec_inner_str = "3/4";
+ break;
+ case 4:
+ fec_inner_str = "5/6";
+ break;
+ case 5:
+ fec_inner_str = "7/8";
+ break;
+ case 6:
+ fec_inner_str = "8/9";
+ break;
+ case 0xF:
+ fec_inner_str = "none";
+ break;
+ default:
+ fec_inner_str = "reserved";
+ }
+ switch (modulation) {
+ case 0x00:
+ modulation_str = "undefined";
+ break;
+ case 0x01:
+ modulation_str = "QAM16";
+ break;
+ case 0x02:
+ modulation_str = "QAM32";
+ break;
+ case 0x03:
+ modulation_str = "QAM64";
+ break;
+ case 0x04:
+ modulation_str = "QAM128";
+ break;
+ case 0x05:
+ modulation_str = "QAM256";
+ break;
+ default:
+ modulation_str = "reserved";
+ }
+ delivery_structure = gst_structure_new ("cable",
+ "modulation", G_TYPE_STRING, modulation_str,
+ "frequency", G_TYPE_UINT, frequency,
+ "symbol-rate", G_TYPE_UINT, symbol_rate,
+ "inner-fec", G_TYPE_STRING, fec_inner_str, NULL);
+ gst_structure_set (transport, "delivery", GST_TYPE_STRUCTURE,
+ delivery_structure, NULL);
}
if ((delivery =
gst_mpeg_descriptor_find (mpegdescriptor,