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gstreamer/tests/examples/mpegts/ts-parser.c

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/* GStreamer
*
* ts-parser.c: sample application to display mpeg-ts info from any pipeline
* Copyright (C) 2013
* Edward Hervey <bilboed@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define DUMP_DESCRIPTORS 0
#include <glib.h>
#include <glib-object.h>
#include <glib/gprintf.h>
#include <gst/gst.h>
#include <gst/mpegts/mpegts.h>
static void
gst_info_dump_mem_line (gchar * linebuf, gsize linebuf_size,
const guint8 * mem, gsize mem_offset, gsize mem_size)
{
gchar hexstr[50], ascstr[18], digitstr[4];
if (mem_size > 16)
mem_size = 16;
hexstr[0] = '\0';
ascstr[0] = '\0';
if (mem != NULL) {
guint i = 0;
mem += mem_offset;
while (i < mem_size) {
ascstr[i] = (g_ascii_isprint (mem[i])) ? mem[i] : '.';
g_snprintf (digitstr, sizeof (digitstr), "%02x ", mem[i]);
g_strlcat (hexstr, digitstr, sizeof (hexstr));
++i;
}
ascstr[i] = '\0';
}
g_snprintf (linebuf, linebuf_size, "%08x: %-48.48s %-16.16s",
(guint) mem_offset, hexstr, ascstr);
}
static void
dump_memory_content (GstMpegTsDescriptor * desc, guint spacing)
{
gsize off = 0;
while (off < desc->length) {
gchar buf[128];
/* gst_info_dump_mem_line will process 16 bytes at most */
gst_info_dump_mem_line (buf, sizeof (buf), desc->data, off + 2,
desc->length - off);
g_printf ("%*s %s\n", spacing, "", buf);
off += 16;
}
}
static const gchar *
descriptor_name (gint val)
{
GEnumValue *en;
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_DESCRIPTOR_TYPE)), val);
if (en == NULL)
/* Else try with DVB enum types */
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_DVB_DESCRIPTOR_TYPE)), val);
if (en == NULL)
/* Else try with ATSC enum types */
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_ATSC_DESCRIPTOR_TYPE)), val);
if (en == NULL)
/* Else try with ISB enum types */
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_ISDB_DESCRIPTOR_TYPE)), val);
if (en == NULL)
/* Else try with misc enum types */
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_MISC_DESCRIPTOR_TYPE)), val);
if (en == NULL)
return "UNKNOWN/PRIVATE";
return en->value_nick;
}
static const gchar *
table_id_name (gint val)
{
GEnumValue *en;
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_SECTION_TABLE_ID)), val);
if (en == NULL)
/* Else try with DVB enum types */
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_SECTION_DVB_TABLE_ID)), val);
if (en == NULL)
/* Else try with ATSC enum types */
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_SECTION_ATSC_TABLE_ID)), val);
if (en == NULL)
/* Else try with SCTE enum types */
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek
(GST_TYPE_MPEG_TS_SECTION_SCTE_TABLE_ID)), val);
if (en == NULL)
return "UNKNOWN/PRIVATE";
return en->value_nick;
}
static const gchar *
enum_name (GType instance_type, gint val)
{
GEnumValue *en;
en = g_enum_get_value (G_ENUM_CLASS (g_type_class_peek (instance_type)), val);
if (!en)
return "UNKNOWN/PRIVATE";
return en->value_nick;
}
static void
dump_cable_delivery_descriptor (GstMpegTsDescriptor * desc, guint spacing)
{
GstMpegTsCableDeliverySystemDescriptor res;
if (gst_mpegts_descriptor_parse_cable_delivery_system (desc, &res)) {
g_printf ("%*s Cable Delivery Descriptor\n", spacing, "");
g_printf ("%*s Frequency : %d Hz\n", spacing, "", res.frequency);
g_printf ("%*s Outer FEC : %d\n", spacing, "", res.outer_fec);
g_printf ("%*s modulation : %d\n", spacing, "", res.modulation);
g_printf ("%*s Symbol rate : %d sym/s\n", spacing, "", res.symbol_rate);
g_printf ("%*s Inner FEC : %d\n", spacing, "", res.fec_inner);
}
}
static void
dump_logical_channel_descriptor (GstMpegTsDescriptor * desc, guint spacing)
{
GstMpegTsLogicalChannelDescriptor res;
guint i;
if (gst_mpegts_descriptor_parse_logical_channel (desc, &res)) {
g_printf ("%*s Logical Channel Descriptor (%d channels)\n", spacing, "",
res.nb_channels);
for (i = 0; i < res.nb_channels; i++) {
GstMpegTsLogicalChannel *chann = &res.channels[i];
g_printf ("%*s service_id: 0x%04x, logical channel number:%4d\n",
spacing, "", chann->service_id, chann->logical_channel_number);
}
}
}
static void
dump_iso_639_language (GstMpegTsDescriptor * desc, guint spacing)
{
guint i;
GstMpegTsISO639LanguageDescriptor res;
if (gst_mpegts_descriptor_parse_iso_639_language (desc, &res)) {
for (i = 0; i < res.nb_language; i++)
g_print
("%*s ISO 639 Language Descriptor %c%c%c , audio_type:0x%x (%s)\n",
spacing, "", res.language[i][0], res.language[i][1],
res.language[i][2], res.audio_type[i],
enum_name (GST_TYPE_MPEG_TS_ISO639_AUDIO_TYPE, res.audio_type[i]));
}
}
static void
dump_descriptors (GPtrArray * descriptors, guint spacing)
{
guint i;
for (i = 0; i < descriptors->len; i++) {
GstMpegTsDescriptor *desc = g_ptr_array_index (descriptors, i);
g_printf ("%*s [descriptor 0x%02x (%s) length:%d]\n", spacing, "",
desc->tag, descriptor_name (desc->tag), desc->length);
if (DUMP_DESCRIPTORS)
dump_memory_content (desc, spacing + 2);
switch (desc->tag) {
case GST_MTS_DESC_REGISTRATION:
{
const guint8 *data = desc->data + 2;
#define SAFE_CHAR(a) (g_ascii_isprint(a) ? a : '.')
g_printf ("%*s Registration : %c%c%c%c [%02x%02x%02x%02x]\n", spacing,
"", SAFE_CHAR (data[0]), SAFE_CHAR (data[1]), SAFE_CHAR (data[2]),
SAFE_CHAR (data[3]), data[0], data[1], data[2], data[3]);
break;
}
case GST_MTS_DESC_DVB_NETWORK_NAME:
{
gchar *network_name;
if (gst_mpegts_descriptor_parse_dvb_network_name (desc, &network_name)) {
g_printf ("%*s Network Name : %s\n", spacing, "", network_name);
g_free (network_name);
}
break;
}
case GST_MTS_DESC_DVB_CABLE_DELIVERY_SYSTEM:
dump_cable_delivery_descriptor (desc, spacing + 2);
break;
case GST_MTS_DESC_DTG_LOGICAL_CHANNEL:
dump_logical_channel_descriptor (desc, spacing + 2);
break;
case GST_MTS_DESC_DVB_SERVICE:
{
gchar *service_name, *provider_name;
GstMpegTsDVBServiceType service_type;
if (gst_mpegts_descriptor_parse_dvb_service (desc, &service_type,
&service_name, &provider_name)) {
g_printf ("%*s Service Descriptor, type:0x%02x (%s)\n", spacing, "",
service_type, enum_name (GST_TYPE_MPEG_TS_DVB_SERVICE_TYPE,
service_type));
g_printf ("%*s service_name : %s\n", spacing, "", service_name);
g_printf ("%*s provider_name : %s\n", spacing, "",
provider_name);
g_free (service_name);
g_free (provider_name);
}
break;
}
case GST_MTS_DESC_ISO_639_LANGUAGE:
dump_iso_639_language (desc, spacing + 2);
break;
case GST_MTS_DESC_DVB_SHORT_EVENT:
{
gchar *language_code, *event_name, *text;
if (gst_mpegts_descriptor_parse_dvb_short_event (desc, &language_code,
&event_name, &text)) {
g_printf ("%*s Short Event, language_code:%s\n", spacing, "",
language_code);
g_printf ("%*s event_name : %s\n", spacing, "", event_name);
g_printf ("%*s text : %s\n", spacing, "", text);
g_free (language_code);
g_free (event_name);
g_free (text);
}
}
break;
case GST_MTS_DESC_DVB_SUBTITLING:
{
gchar lang[4];
guint8 type;
guint16 composition;
guint16 ancillary;
guint i;
for (i = 0;
gst_mpegts_descriptor_parse_dvb_subtitling_idx (desc, i, &lang,
&type, &composition, &ancillary); i++) {
g_printf ("%*s Subtitling, language_code:%s\n", spacing, "", lang);
g_printf ("%*s type : %u\n", spacing, "", type);
g_printf ("%*s composition page id : %u\n", spacing, "",
composition);
g_printf ("%*s ancillary page id : %u\n", spacing, "",
ancillary);
}
}
break;
case GST_MTS_DESC_DVB_TELETEXT:
{
GstMpegTsDVBTeletextType type;
gchar lang[4];
guint8 magazine, page_number;
guint i;
for (i = 0;
gst_mpegts_descriptor_parse_dvb_teletext_idx (desc, i, &lang, &type,
&magazine, &page_number); i++) {
g_printf ("%*s Teletext, type:0x%02x (%s)\n", spacing, "", type,
enum_name (GST_TYPE_MPEG_TS_DVB_TELETEXT_TYPE, type));
g_printf ("%*s language : %s\n", spacing, "", lang);
g_printf ("%*s magazine : %u\n", spacing, "", magazine);
g_printf ("%*s page number : %u\n", spacing, "", page_number);
}
}
break;
default:
break;
}
}
}
static void
dump_pat (GstMpegTsSection * section)
{
GPtrArray *pat = gst_mpegts_section_get_pat (section);
guint i, len;
len = pat->len;
g_printf (" %d program(s):\n", len);
for (i = 0; i < len; i++) {
GstMpegTsPatProgram *patp = g_ptr_array_index (pat, i);
g_print
(" program_number:%6d (0x%04x), network_or_program_map_PID:0x%04x\n",
patp->program_number, patp->program_number,
patp->network_or_program_map_PID);
}
g_ptr_array_unref (pat);
}
static void
dump_pmt (GstMpegTsSection * section)
{
const GstMpegTsPMT *pmt = gst_mpegts_section_get_pmt (section);
guint i, len;
g_printf (" program_number : 0x%04x\n", section->subtable_extension);
g_printf (" pcr_pid : 0x%04x\n", pmt->pcr_pid);
dump_descriptors (pmt->descriptors, 7);
len = pmt->streams->len;
g_printf (" %d Streams:\n", len);
for (i = 0; i < len; i++) {
GstMpegTsPMTStream *stream = g_ptr_array_index (pmt->streams, i);
g_printf (" pid:0x%04x , stream_type:0x%02x (%s)\n", stream->pid,
stream->stream_type,
enum_name (GST_TYPE_MPEG_TS_STREAM_TYPE, stream->stream_type));
dump_descriptors (stream->descriptors, 9);
}
}
static void
dump_eit (GstMpegTsSection * section)
{
const GstMpegTsEIT *eit = gst_mpegts_section_get_eit (section);
guint i, len;
g_assert (eit);
g_printf (" service_id : 0x%04x\n", section->subtable_extension);
g_printf (" transport_stream_id : 0x%04x\n", eit->transport_stream_id);
g_printf (" original_network_id : 0x%04x\n", eit->original_network_id);
g_printf (" segment_last_section_number:0x%02x, last_table_id:0x%02x\n",
eit->segment_last_section_number, eit->last_table_id);
g_printf (" actual_stream : %s, present_following : %s\n",
eit->actual_stream ? "TRUE" : "FALSE",
eit->present_following ? "TRUE" : "FALSE");
len = eit->events->len;
g_printf (" %d Event(s):\n", len);
for (i = 0; i < len; i++) {
gchar *tmp = (gchar *) "<NO TIME>";
GstMpegTsEITEvent *event = g_ptr_array_index (eit->events, i);
if (event->start_time)
tmp = gst_date_time_to_iso8601_string (event->start_time);
g_printf (" event_id:0x%04x, start_time:%s, duration:%"
GST_TIME_FORMAT "\n", event->event_id, tmp,
GST_TIME_ARGS (event->duration * GST_SECOND));
g_printf (" running_status:0x%02x (%s), free_CA_mode:%d (%s)\n",
event->running_status, enum_name (GST_TYPE_MPEG_TS_RUNNING_STATUS,
event->running_status), event->free_CA_mode,
event->free_CA_mode ? "MAYBE SCRAMBLED" : "NOT SCRAMBLED");
if (event->start_time)
g_free (tmp);
dump_descriptors (event->descriptors, 9);
}
}
static void
dump_nit (GstMpegTsSection * section)
{
const GstMpegTsNIT *nit = gst_mpegts_section_get_nit (section);
guint i, len;
g_assert (nit);
g_printf (" network_id : 0x%04x\n", section->subtable_extension);
g_printf (" actual_network : %s\n",
nit->actual_network ? "TRUE" : "FALSE");
dump_descriptors (nit->descriptors, 7);
len = nit->streams->len;
g_printf (" %d Streams:\n", len);
for (i = 0; i < len; i++) {
GstMpegTsNITStream *stream = g_ptr_array_index (nit->streams, i);
g_printf
(" transport_stream_id:0x%04x , original_network_id:0x%02x\n",
stream->transport_stream_id, stream->original_network_id);
dump_descriptors (stream->descriptors, 9);
}
}
static void
dump_bat (GstMpegTsSection * section)
{
const GstMpegTsBAT *bat = gst_mpegts_section_get_bat (section);
guint i, len;
g_assert (bat);
g_printf (" bouquet_id : 0x%04x\n", section->subtable_extension);
dump_descriptors (bat->descriptors, 7);
len = bat->streams->len;
g_printf (" %d Streams:\n", len);
for (i = 0; i < len; i++) {
GstMpegTsBATStream *stream = g_ptr_array_index (bat->streams, i);
g_printf
(" transport_stream_id:0x%04x , original_network_id:0x%02x\n",
stream->transport_stream_id, stream->original_network_id);
dump_descriptors (stream->descriptors, 9);
}
}
static void
dump_sdt (GstMpegTsSection * section)
{
const GstMpegTsSDT *sdt = gst_mpegts_section_get_sdt (section);
guint i, len;
g_assert (sdt);
g_printf (" original_network_id : 0x%04x\n", sdt->original_network_id);
g_printf (" actual_ts : %s\n",
sdt->actual_ts ? "TRUE" : "FALSE");
len = sdt->services->len;
g_printf (" %d Services:\n", len);
for (i = 0; i < len; i++) {
GstMpegTsSDTService *service = g_ptr_array_index (sdt->services, i);
g_print
(" service_id:0x%04x, EIT_schedule_flag:%d, EIT_present_following_flag:%d\n",
service->service_id, service->EIT_schedule_flag,
service->EIT_present_following_flag);
g_print
(" running_status:0x%02x (%s), free_CA_mode:%d (%s)\n",
service->running_status,
enum_name (GST_TYPE_MPEG_TS_RUNNING_STATUS, service->running_status),
service->free_CA_mode,
service->free_CA_mode ? "MAYBE SCRAMBLED" : "NOT SCRAMBLED");
dump_descriptors (service->descriptors, 9);
}
}
static void
dump_tdt (GstMpegTsSection * section)
{
GstDateTime *date = gst_mpegts_section_get_tdt (section);
if (date) {
gchar *str = gst_date_time_to_iso8601_string (date);
g_printf (" utc_time : %s\n", str);
g_free (str);
gst_date_time_unref (date);
} else {
g_printf (" No utc_time present\n");
}
}
static void
dump_tot (GstMpegTsSection * section)
{
const GstMpegTsTOT *tot = gst_mpegts_section_get_tot (section);
gchar *str = gst_date_time_to_iso8601_string (tot->utc_time);
g_printf (" utc_time : %s\n", str);
dump_descriptors (tot->descriptors, 7);
g_free (str);
}
static void
dump_section (GstMpegTsSection * section)
{
switch (GST_MPEGTS_SECTION_TYPE (section)) {
case GST_MPEGTS_SECTION_PAT:
dump_pat (section);
break;
case GST_MPEGTS_SECTION_PMT:
dump_pmt (section);
break;
case GST_MPEGTS_SECTION_TDT:
dump_tdt (section);
break;
case GST_MPEGTS_SECTION_TOT:
dump_tot (section);
break;
case GST_MPEGTS_SECTION_SDT:
dump_sdt (section);
break;
case GST_MPEGTS_SECTION_NIT:
dump_nit (section);
break;
case GST_MPEGTS_SECTION_BAT:
dump_bat (section);
break;
case GST_MPEGTS_SECTION_EIT:
dump_eit (section);
break;
default:
g_printf (" Unknown section type\n");
break;
}
}
static void
_on_bus_message (GstBus * bus, GstMessage * message, GMainLoop * mainloop)
{
/* g_printf ("Got message %s\n", GST_MESSAGE_TYPE_NAME (message)); */
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
case GST_MESSAGE_EOS:
g_main_loop_quit (mainloop);
break;
case GST_MESSAGE_ELEMENT:
{
GstMpegTsSection *section;
if ((section = gst_message_parse_mpegts_section (message))) {
const gchar *table_name;
table_name = table_id_name (section->table_id);
g_print
("Got section: PID:0x%04x type:%s (table_id 0x%02x (%s)) at offset %"
G_GUINT64_FORMAT "\n", section->pid,
enum_name (GST_TYPE_MPEG_TS_SECTION_TYPE, section->section_type),
section->table_id, table_name, section->offset);
if (!section->short_section) {
g_print
(" subtable_extension:0x%04x, version_number:0x%02x\n",
section->subtable_extension, section->version_number);
g_print
(" section_number:0x%02x last_section_number:0x%02x crc:0x%08x\n",
section->section_number, section->last_section_number,
section->crc);
}
dump_section (section);
g_printf ("\n\n");
gst_mpegts_section_unref (section);
}
break;
}
default:
break;
}
}
int
main (int argc, gchar ** argv)
{
GstElement *pipeline = NULL;
GError *error = NULL;
GstBus *bus;
GMainLoop *mainloop;
gst_init (&argc, &argv);
gst_mpegts_initialize ();
pipeline = gst_parse_launchv ((const gchar **) &argv[1], &error);
if (error) {
g_printf ("pipeline could not be constructed: %s\n", error->message);
g_error_free (error);
return 1;
}
/* Hack: ensure all enum type classes are loaded */
g_type_class_ref (GST_TYPE_MPEG_TS_SECTION_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_SECTION_TABLE_ID);
g_type_class_ref (GST_TYPE_MPEG_TS_RUNNING_STATUS);
g_type_class_ref (GST_TYPE_MPEG_TS_DESCRIPTOR_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_DVB_DESCRIPTOR_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_ATSC_DESCRIPTOR_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_ISDB_DESCRIPTOR_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_MISC_DESCRIPTOR_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_ISO639_AUDIO_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_DVB_SERVICE_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_DVB_TELETEXT_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_STREAM_TYPE);
g_type_class_ref (GST_TYPE_MPEG_TS_SECTION_DVB_TABLE_ID);
g_type_class_ref (GST_TYPE_MPEG_TS_SECTION_ATSC_TABLE_ID);
g_type_class_ref (GST_TYPE_MPEG_TS_SECTION_SCTE_TABLE_ID);
mainloop = g_main_loop_new (NULL, FALSE);
/* Put a bus handler */
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_signal_watch (bus);
g_signal_connect (bus, "message", (GCallback) _on_bus_message, mainloop);
/* Start pipeline */
gst_element_set_state (pipeline, GST_STATE_PLAYING);
g_main_loop_run (mainloop);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
gst_object_unref (bus);
return 0;
}
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