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coral / mtk-gst-plugins-bad-debian / 0aa20f1d4e7a60a8fb22d2611e91e294ed2f02eb / . / ext / dash / gstmpdparser.c
blob: 003e1d5db796f4ab2bba3ff11c574ff2de5def79 [file] [log] [blame]
/*
* DASH MPD parsing library
*
* gstmpdparser.c
*
* Copyright (C) 2012 STMicroelectronics
*
* Authors:
* Gianluca Gennari <gennarone@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 2.1 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 (COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include "gstmpdparser.h"
#include "gstdash_debug.h"
#define GST_CAT_DEFAULT gst_dash_demux_debug
/* Property parsing */
static gboolean gst_mpdparser_get_xml_prop_string (xmlNode * a_node,
const gchar * property_name, gchar ** property_value);
static gboolean gst_mpdparser_get_xml_prop_string_vector_type (xmlNode * a_node,
const gchar * property_name, gchar *** property_value);
static gboolean gst_mpdparser_get_xml_prop_unsigned_integer (xmlNode * a_node,
const gchar * property_name, guint default_val, guint * property_value);
static gboolean gst_mpdparser_get_xml_prop_unsigned_integer_64 (xmlNode *
a_node, const gchar * property_name, guint64 default_val,
guint64 * property_value);
static gboolean gst_mpdparser_get_xml_prop_uint_vector_type (xmlNode * a_node,
const gchar * property_name, guint ** property_value, guint * value_size);
static gboolean gst_mpdparser_get_xml_prop_double (xmlNode * a_node,
const gchar * property_name, gdouble * property_value);
static gboolean gst_mpdparser_get_xml_prop_boolean (xmlNode * a_node,
const gchar * property_name, gboolean default_val,
gboolean * property_value);
static gboolean gst_mpdparser_get_xml_prop_type (xmlNode * a_node,
const gchar * property_name, GstMPDFileType * property_value);
static gboolean gst_mpdparser_get_xml_prop_SAP_type (xmlNode * a_node,
const gchar * property_name, GstSAPType * property_value);
static gboolean gst_mpdparser_get_xml_prop_range (xmlNode * a_node,
const gchar * property_name, GstRange ** property_value);
static gboolean gst_mpdparser_get_xml_prop_ratio (xmlNode * a_node,
const gchar * property_name, GstRatio ** property_value);
static gboolean gst_mpdparser_get_xml_prop_framerate (xmlNode * a_node,
const gchar * property_name, GstFrameRate ** property_value);
static gboolean gst_mpdparser_get_xml_prop_cond_uint (xmlNode * a_node,
const gchar * property_name, GstConditionalUintType ** property_value);
static gboolean gst_mpdparser_get_xml_prop_dateTime (xmlNode * a_node,
const gchar * property_name, GstDateTime ** property_value);
static gboolean gst_mpdparser_get_xml_prop_duration (xmlNode * a_node,
const gchar * property_name, gint64 default_value, gint64 * property_value);
static gboolean gst_mpdparser_get_xml_node_content (xmlNode * a_node,
gchar ** content);
static gchar *gst_mpdparser_get_xml_node_namespace (xmlNode * a_node,
const gchar * prefix);
/* XML node parsing */
static void gst_mpdparser_parse_baseURL_node (GList ** list, xmlNode * a_node);
static void gst_mpdparser_parse_descriptor_type_node (GList ** list,
xmlNode * a_node);
static void gst_mpdparser_parse_content_component_node (GList ** list,
xmlNode * a_node);
static void gst_mpdparser_parse_location_node (GList ** list, xmlNode * a_node);
static void gst_mpdparser_parse_subrepresentation_node (GList ** list,
xmlNode * a_node);
static void gst_mpdparser_parse_segment_url_node (GList ** list,
xmlNode * a_node);
static void gst_mpdparser_parse_url_type_node (GstURLType ** pointer,
xmlNode * a_node);
static void gst_mpdparser_parse_seg_base_type_ext (GstSegmentBaseType **
pointer, xmlNode * a_node, GstSegmentBaseType * parent);
static void gst_mpdparser_parse_s_node (GQueue * queue, xmlNode * a_node);
static void gst_mpdparser_parse_segment_timeline_node (GstSegmentTimelineNode **
pointer, xmlNode * a_node);
static void gst_mpdparser_parse_mult_seg_base_type_ext (GstMultSegmentBaseType
** pointer, xmlNode * a_node, GstMultSegmentBaseType * parent);
static void gst_mpdparser_parse_segment_list_node (GstSegmentListNode **
pointer, xmlNode * a_node, GstSegmentListNode * parent);
static void
gst_mpdparser_parse_representation_base_type (GstRepresentationBaseType **
pointer, xmlNode * a_node);
static void gst_mpdparser_parse_representation_node (GList ** list,
xmlNode * a_node, GstAdaptationSetNode * parent);
static void gst_mpdparser_parse_adaptation_set_node (GList ** list,
xmlNode * a_node, GstPeriodNode * parent);
static void gst_mpdparser_parse_subset_node (GList ** list, xmlNode * a_node);
static void gst_mpdparser_parse_segment_template_node (GstSegmentTemplateNode **
pointer, xmlNode * a_node, GstSegmentTemplateNode * parent);
static void gst_mpdparser_parse_period_node (GList ** list, xmlNode * a_node);
static void gst_mpdparser_parse_program_info_node (GList ** list,
xmlNode * a_node);
static void gst_mpdparser_parse_metrics_range_node (GList ** list,
xmlNode * a_node);
static void gst_mpdparser_parse_metrics_node (GList ** list, xmlNode * a_node);
static void gst_mpdparser_parse_root_node (GstMPDNode ** pointer,
xmlNode * a_node);
/* Helper functions */
static gint convert_to_millisecs (gint decimals, gint pos);
static int strncmp_ext (const char *s1, const char *s2);
static GstStreamPeriod *gst_mpdparser_get_stream_period (GstMpdClient * client);
static GstSNode *gst_mpdparser_clone_s_node (GstSNode * pointer);
static GstSegmentTimelineNode
* gst_mpdparser_clone_segment_timeline (GstSegmentTimelineNode * pointer);
static GstRange *gst_mpdparser_clone_range (GstRange * range);
static GstURLType *gst_mpdparser_clone_URL (GstURLType * url);
static gchar *gst_mpdparser_parse_baseURL (GstMpdClient * client,
GstActiveStream * stream, gchar ** query);
static GstSegmentURLNode *gst_mpdparser_clone_segment_url (GstSegmentURLNode *
seg_url);
static gchar *gst_mpdparser_get_mediaURL (GstActiveStream * stream,
GstSegmentURLNode * segmentURL);
static const gchar *gst_mpdparser_get_initializationURL (GstActiveStream *
stream, GstURLType * InitializationURL);
static gchar *gst_mpdparser_build_URL_from_template (const gchar * url_template,
const gchar * id, guint number, guint bandwidth, guint64 time);
static gboolean gst_mpd_client_add_media_segment (GstActiveStream * stream,
GstSegmentURLNode * url_node, guint number, gint repeat, gint64 scale_start,
gint64 scale_duration, GstClockTime start, GstClockTime duration);
static const gchar *gst_mpdparser_mimetype_to_caps (const gchar * mimeType);
static GstClockTime gst_mpd_client_get_segment_duration (GstMpdClient * client,
GstActiveStream * stream, gint64 * scale_duration);
static GstDateTime *gst_mpd_client_get_availability_start_time (GstMpdClient *
client);
/* Representation */
static GstRepresentationNode *gst_mpdparser_get_lowest_representation (GList *
Representations);
#if 0
static GstRepresentationNode *gst_mpdparser_get_highest_representation (GList *
Representations);
static GstRepresentationNode
* gst_mpdparser_get_representation_with_max_bandwidth (GList *
Representations, gint max_bandwidth);
#endif
static GstSegmentBaseType *gst_mpdparser_get_segment_base (GstPeriodNode *
Period, GstAdaptationSetNode * AdaptationSet,
GstRepresentationNode * Representation);
static GstSegmentListNode *gst_mpdparser_get_segment_list (GstPeriodNode *
Period, GstAdaptationSetNode * AdaptationSet,
GstRepresentationNode * Representation);
/* Segments */
static guint gst_mpd_client_get_segments_counts (GstMpdClient * client,
GstActiveStream * stream);
/* Memory management */
static GstSegmentTimelineNode *gst_mpdparser_segment_timeline_node_new (void);
static void gst_mpdparser_free_mpd_node (GstMPDNode * mpd_node);
static void gst_mpdparser_free_prog_info_node (GstProgramInformationNode *
prog_info_node);
static void gst_mpdparser_free_metrics_node (GstMetricsNode * metrics_node);
static void gst_mpdparser_free_metrics_range_node (GstMetricsRangeNode *
metrics_range_node);
static void gst_mpdparser_free_period_node (GstPeriodNode * period_node);
static void gst_mpdparser_free_subset_node (GstSubsetNode * subset_node);
static void gst_mpdparser_free_segment_template_node (GstSegmentTemplateNode *
segment_template_node);
static void
gst_mpdparser_free_representation_base_type (GstRepresentationBaseType *
representation_base);
static void gst_mpdparser_free_adaptation_set_node (GstAdaptationSetNode *
adaptation_set_node);
static void gst_mpdparser_free_representation_node (GstRepresentationNode *
representation_node);
static void gst_mpdparser_free_subrepresentation_node (GstSubRepresentationNode
* subrep_node);
static void gst_mpdparser_free_s_node (GstSNode * s_node);
static void gst_mpdparser_free_segment_timeline_node (GstSegmentTimelineNode *
seg_timeline);
static void gst_mpdparser_free_url_type_node (GstURLType * url_type_node);
static void gst_mpdparser_free_seg_base_type_ext (GstSegmentBaseType *
seg_base_type);
static void gst_mpdparser_free_mult_seg_base_type_ext (GstMultSegmentBaseType *
mult_seg_base_type);
static void gst_mpdparser_free_segment_list_node (GstSegmentListNode *
segment_list_node);
static void gst_mpdparser_free_segment_url_node (GstSegmentURLNode *
segment_url);
static void gst_mpdparser_free_base_url_node (GstBaseURL * base_url_node);
static void gst_mpdparser_free_descriptor_type_node (GstDescriptorType *
descriptor_type);
static void gst_mpdparser_free_content_component_node (GstContentComponentNode *
content_component_node);
static void gst_mpdparser_free_stream_period (GstStreamPeriod * stream_period);
static void gst_mpdparser_free_media_segment (GstMediaSegment * media_segment);
static void gst_mpdparser_free_active_stream (GstActiveStream * active_stream);
/* functions to parse node namespaces, content and properties */
static gboolean
gst_mpdparser_get_xml_prop_string (xmlNode * a_node,
const gchar * property_name, gchar ** property_value)
{
xmlChar *prop_string;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
*property_value = (gchar *) prop_string;
exists = TRUE;
GST_LOG (" - %s: %s", property_name, prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_string_vector_type (xmlNode * a_node,
const gchar * property_name, gchar *** property_value)
{
xmlChar *prop_string;
gchar **prop_string_vector = NULL;
guint i = 0;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
prop_string_vector = g_strsplit ((gchar *) prop_string, " ", -1);
if (prop_string_vector) {
exists = TRUE;
*property_value = prop_string_vector;
GST_LOG (" - %s:", property_name);
while (prop_string_vector[i]) {
GST_LOG (" %s", prop_string_vector[i]);
i++;
}
} else {
GST_WARNING ("Scan of string vector property failed!");
}
xmlFree (prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_unsigned_integer (xmlNode * a_node,
const gchar * property_name, guint default_val, guint * property_value)
{
xmlChar *prop_string;
gboolean exists = FALSE;
*property_value = default_val;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
if (sscanf ((gchar *) prop_string, "%u", property_value)) {
exists = TRUE;
GST_LOG (" - %s: %u", property_name, *property_value);
} else {
GST_WARNING
("failed to parse unsigned integer property %s from xml string %s",
property_name, prop_string);
}
xmlFree (prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_unsigned_integer_64 (xmlNode * a_node,
const gchar * property_name, guint64 default_val, guint64 * property_value)
{
xmlChar *prop_string;
gboolean exists = FALSE;
*property_value = default_val;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
if (sscanf ((gchar *) prop_string, "%" G_GUINT64_FORMAT, property_value)) {
exists = TRUE;
GST_LOG (" - %s: %" G_GUINT64_FORMAT, property_name, *property_value);
} else {
GST_WARNING
("failed to parse unsigned integer property %s from xml string %s",
property_name, prop_string);
}
xmlFree (prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_uint_vector_type (xmlNode * a_node,
const gchar * property_name, guint ** property_value, guint * value_size)
{
xmlChar *prop_string;
gchar **str_vector;
guint *prop_uint_vector = NULL, i;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
str_vector = g_strsplit ((gchar *) prop_string, " ", -1);
if (str_vector) {
*value_size = g_strv_length (str_vector);
prop_uint_vector = g_malloc (*value_size * sizeof (guint));
if (prop_uint_vector) {
exists = TRUE;
GST_LOG (" - %s:", property_name);
for (i = 0; i < *value_size; i++) {
if (sscanf ((gchar *) str_vector[i], "%u", &prop_uint_vector[i])) {
GST_LOG (" %u", prop_uint_vector[i]);
} else {
GST_WARNING
("failed to parse uint vector type property %s from xml string %s",
property_name, str_vector[i]);
}
}
*property_value = prop_uint_vector;
} else {
GST_WARNING ("Array allocation failed!");
}
} else {
GST_WARNING ("Scan of uint vector property failed!");
}
xmlFree (prop_string);
g_strfreev (str_vector);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_double (xmlNode * a_node,
const gchar * property_name, gdouble * property_value)
{
xmlChar *prop_string;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
if (sscanf ((gchar *) prop_string, "%lf", property_value)) {
exists = TRUE;
GST_LOG (" - %s: %lf", property_name, *property_value);
} else {
GST_WARNING ("failed to parse double property %s from xml string %s",
property_name, prop_string);
}
xmlFree (prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_boolean (xmlNode * a_node,
const gchar * property_name, gboolean default_val,
gboolean * property_value)
{
xmlChar *prop_string;
gboolean exists = FALSE;
*property_value = default_val;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
if (xmlStrcmp (prop_string, (xmlChar *) "false") == 0) {
exists = TRUE;
*property_value = FALSE;
GST_LOG (" - %s: false", property_name);
} else if (xmlStrcmp (prop_string, (xmlChar *) "true") == 0) {
exists = TRUE;
*property_value = TRUE;
GST_LOG (" - %s: true", property_name);
} else {
GST_WARNING ("failed to parse boolean property %s from xml string %s",
property_name, prop_string);
}
xmlFree (prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_type (xmlNode * a_node,
const gchar * property_name, GstMPDFileType * property_value)
{
xmlChar *prop_string;
gboolean exists = FALSE;
*property_value = GST_MPD_FILE_TYPE_STATIC; /* default */
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
if (xmlStrcmp (prop_string, (xmlChar *) "OnDemand") == 0
|| xmlStrcmp (prop_string, (xmlChar *) "static") == 0) {
exists = TRUE;
*property_value = GST_MPD_FILE_TYPE_STATIC;
GST_LOG (" - %s: static", property_name);
} else if (xmlStrcmp (prop_string, (xmlChar *) "Live") == 0
|| xmlStrcmp (prop_string, (xmlChar *) "dynamic") == 0) {
exists = TRUE;
*property_value = GST_MPD_FILE_TYPE_DYNAMIC;
GST_LOG (" - %s: dynamic", property_name);
} else {
GST_WARNING ("failed to parse MPD type property %s from xml string %s",
property_name, prop_string);
}
xmlFree (prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_SAP_type (xmlNode * a_node,
const gchar * property_name, GstSAPType * property_value)
{
xmlChar *prop_string;
guint prop_SAP_type = 0;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
if (sscanf ((gchar *) prop_string, "%u", &prop_SAP_type)
&& prop_SAP_type <= 6) {
exists = TRUE;
*property_value = (GstSAPType) prop_SAP_type;
GST_LOG (" - %s: %u", property_name, prop_SAP_type);
} else {
GST_WARNING
("failed to parse unsigned integer property %s from xml string %s",
property_name, prop_string);
}
xmlFree (prop_string);
}
return exists;
}
static gboolean
gst_mpdparser_get_xml_prop_range (xmlNode * a_node, const gchar * property_name,
GstRange ** property_value)
{
xmlChar *prop_string;
guint64 first_byte_pos = 0, last_byte_pos = 0;
guint len, pos;
gchar *str;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
len = xmlStrlen (prop_string);
str = (gchar *) prop_string;
GST_TRACE ("range: %s, len %d", str, len);
/* read "-" */
pos = strcspn (str, "-");
if (pos >= len) {
GST_TRACE ("pos %d >= len %d", pos, len);
goto error;
}
/* read first_byte_pos */
if (pos != 0) {
if (sscanf (str, "%" G_GUINT64_FORMAT, &first_byte_pos) != 1) {
goto error;
}
}
/* read last_byte_pos */
if (pos < (len - 1)) {
if (sscanf (str + pos + 1, "%" G_GUINT64_FORMAT, &last_byte_pos) != 1) {
goto error;
}
}
/* malloc return data structure */
*property_value = g_slice_new0 (GstRange);
if (*property_value == NULL) {
GST_WARNING ("Allocation of GstRange failed!");
goto error;
}
exists = TRUE;
(*property_value)->first_byte_pos = first_byte_pos;
(*property_value)->last_byte_pos = last_byte_pos;
xmlFree (prop_string);
GST_LOG (" - %s: %" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT,
property_name, first_byte_pos, last_byte_pos);
}
return exists;
error:
xmlFree (prop_string);
GST_WARNING ("failed to parse property %s from xml string %s", property_name,
prop_string);
return FALSE;
}
static gboolean
gst_mpdparser_get_xml_prop_ratio (xmlNode * a_node,
const gchar * property_name, GstRatio ** property_value)
{
xmlChar *prop_string;
guint num = 0, den = 1;
guint len, pos;
gchar *str;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
len = xmlStrlen (prop_string);
str = (gchar *) prop_string;
GST_TRACE ("ratio: %s, len %d", str, len);
/* read ":" */
pos = strcspn (str, ":");
if (pos >= len) {
GST_TRACE ("pos %d >= len %d", pos, len);
goto error;
}
/* read num */
if (pos != 0) {
if (sscanf (str, "%u", &num) != 1) {
goto error;
}
}
/* read den */
if (pos < (len - 1)) {
if (sscanf (str + pos + 1, "%u", &den) != 1) {
goto error;
}
}
/* malloc return data structure */
*property_value = g_slice_new0 (GstRatio);
if (*property_value == NULL) {
GST_WARNING ("Allocation of GstRatio failed!");
goto error;
}
exists = TRUE;
(*property_value)->num = num;
(*property_value)->den = den;
xmlFree (prop_string);
GST_LOG (" - %s: %u:%u", property_name, num, den);
}
return exists;
error:
xmlFree (prop_string);
GST_WARNING ("failed to parse property %s from xml string %s", property_name,
prop_string);
return FALSE;
}
static gboolean
gst_mpdparser_get_xml_prop_framerate (xmlNode * a_node,
const gchar * property_name, GstFrameRate ** property_value)
{
xmlChar *prop_string;
guint num = 0, den = 1;
guint len, pos;
gchar *str;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
len = xmlStrlen (prop_string);
str = (gchar *) prop_string;
GST_TRACE ("framerate: %s, len %d", str, len);
/* read "/" if available */
pos = strcspn (str, "/");
/* read num */
if (pos != 0) {
if (sscanf (str, "%u", &num) != 1) {
goto error;
}
}
/* read den (if available) */
if (pos < (len - 1)) {
if (sscanf (str + pos + 1, "%u", &den) != 1) {
goto error;
}
}
/* alloc return data structure */
*property_value = g_slice_new0 (GstFrameRate);
if (*property_value == NULL) {
GST_WARNING ("Allocation of GstFrameRate failed!");
goto error;
}
exists = TRUE;
(*property_value)->num = num;
(*property_value)->den = den;
xmlFree (prop_string);
if (den == 1)
GST_LOG (" - %s: %u", property_name, num);
else
GST_LOG (" - %s: %u/%u", property_name, num, den);
}
return exists;
error:
xmlFree (prop_string);
GST_WARNING ("failed to parse property %s from xml string %s", property_name,
prop_string);
return FALSE;
}
static gboolean
gst_mpdparser_get_xml_prop_cond_uint (xmlNode * a_node,
const gchar * property_name, GstConditionalUintType ** property_value)
{
xmlChar *prop_string;
gchar *str;
gboolean flag;
guint val;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
str = (gchar *) prop_string;
GST_TRACE ("conditional uint: %s", str);
if (strcmp (str, "false") == 0) {
flag = FALSE;
val = 0;
} else if (strcmp (str, "true") == 0) {
flag = TRUE;
val = 0;
} else {
flag = TRUE;
if (sscanf (str, "%u", &val) != 1)
goto error;
}
/* alloc return data structure */
*property_value = g_slice_new0 (GstConditionalUintType);
if (*property_value == NULL) {
GST_WARNING ("Allocation of GstConditionalUintType failed!");
goto error;
}
exists = TRUE;
(*property_value)->flag = flag;
(*property_value)->value = val;
xmlFree (prop_string);
GST_LOG (" - %s: flag=%s val=%u", property_name, flag ? "true" : "false",
val);
}
return exists;
error:
xmlFree (prop_string);
GST_WARNING ("failed to parse property %s from xml string %s", property_name,
prop_string);
return FALSE;
}
/*
DateTime Data Type
The dateTime data type is used to specify a date and a time.
The dateTime is specified in the following form "YYYY-MM-DDThh:mm:ss" where:
* YYYY indicates the year
* MM indicates the month
* DD indicates the day
* T indicates the start of the required time section
* hh indicates the hour
* mm indicates the minute
* ss indicates the second
Note: All components are required!
*/
static gboolean
gst_mpdparser_get_xml_prop_dateTime (xmlNode * a_node,
const gchar * property_name, GstDateTime ** property_value)
{
xmlChar *prop_string;
gchar *str;
gint ret, pos;
gint year, month, day, hour, minute, second;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
str = (gchar *) prop_string;
GST_TRACE ("dateTime: %s, len %d", str, xmlStrlen (prop_string));
/* parse year */
ret = sscanf (str, "%d", &year);
if (ret != 1)
goto error;
pos = strcspn (str, "-");
str += (pos + 1);
GST_TRACE (" - year %d", year);
/* parse month */
ret = sscanf (str, "%d", &month);
if (ret != 1)
goto error;
pos = strcspn (str, "-");
str += (pos + 1);
GST_TRACE (" - month %d", month);
/* parse day */
ret = sscanf (str, "%d", &day);
if (ret != 1)
goto error;
pos = strcspn (str, "T");
str += (pos + 1);
GST_TRACE (" - day %d", day);
/* parse hour */
ret = sscanf (str, "%d", &hour);
if (ret != 1)
goto error;
pos = strcspn (str, ":");
str += (pos + 1);
GST_TRACE (" - hour %d", hour);
/* parse minute */
ret = sscanf (str, "%d", &minute);
if (ret != 1)
goto error;
pos = strcspn (str, ":");
str += (pos + 1);
GST_TRACE (" - minute %d", minute);
/* parse second */
ret = sscanf (str, "%d", &second);
if (ret != 1)
goto error;
GST_TRACE (" - second %d", second);
GST_LOG (" - %s: %4d/%02d/%02d %02d:%02d:%02d", property_name,
year, month, day, hour, minute, second);
exists = TRUE;
*property_value =
gst_date_time_new (0, year, month, day, hour, minute, second);
xmlFree (prop_string);
}
return exists;
error:
xmlFree (prop_string);
GST_WARNING ("failed to parse property %s from xml string %s", property_name,
prop_string);
return FALSE;
}
/*
Duration Data Type
The duration data type is used to specify a time interval.
The time interval is specified in the following form "-PnYnMnDTnHnMnS" where:
* - indicates the negative sign (optional)
* P indicates the period (required)
* nY indicates the number of years
* nM indicates the number of months
* nD indicates the number of days
* T indicates the start of a time section (required if you are going to specify hours, minutes, or seconds)
* nH indicates the number of hours
* nM indicates the number of minutes
* nS indicates the number of seconds
*/
/* this function computes decimals * 10 ^ (3 - pos) */
static gint
convert_to_millisecs (gint decimals, gint pos)
{
gint num = 1, den = 1, i = 3 - pos;
while (i < 0) {
den *= 10;
i++;
}
while (i > 0) {
num *= 10;
i--;
}
/* if i == 0 we have exactly 3 decimals and nothing to do */
return decimals * num / den;
}
static gboolean
gst_mpdparser_get_xml_prop_duration (xmlNode * a_node,
const gchar * property_name, gint64 default_value, gint64 * property_value)
{
xmlChar *prop_string;
gchar *str;
gint ret, read, len, pos, posT;
gint years = 0, months = 0, days = 0, hours = 0, minutes = 0, seconds =
0, decimals = 0;
gint sign = 1;
gboolean have_ms = FALSE;
gboolean exists = FALSE;
prop_string = xmlGetProp (a_node, (const xmlChar *) property_name);
if (prop_string) {
len = xmlStrlen (prop_string);
str = (gchar *) prop_string;
GST_TRACE ("duration: %s, len %d", str, len);
/* read "-" for sign, if present */
pos = strcspn (str, "-");
if (pos < len) { /* found "-" */
if (pos != 0) {
GST_WARNING ("sign \"-\" non at the beginning of the string");
goto error;
}
GST_TRACE ("found - sign at the beginning");
sign = -1;
str++;
len--;
}
/* read "P" for period */
pos = strcspn (str, "P");
if (pos != 0) {
GST_WARNING ("P not found at the beginning of the string!");
goto error;
}
str++;
len--;
/* read "T" for time (if present) */
posT = strcspn (str, "T");
len -= posT;
if (posT > 0) {
/* there is some room between P and T, so there must be a period section */
/* read years, months, days */
do {
GST_TRACE ("parsing substring %s", str);
pos = strcspn (str, "YMD");
ret = sscanf (str, "%d", &read);
if (ret != 1) {
GST_WARNING ("can not read integer value from string %s!", str);
goto error;
}
switch (str[pos]) {
case 'Y':
years = read;
break;
case 'M':
months = read;
break;
case 'D':
days = read;
break;
default:
GST_WARNING ("unexpected char %c!", str[pos]);
goto error;
break;
}
GST_TRACE ("read number %d type %c", read, str[pos]);
str += (pos + 1);
posT -= (pos + 1);
} while (posT > 0);
GST_TRACE ("Y:M:D=%d:%d:%d", years, months, days);
}
/* read "T" for time (if present) */
/* here T is at pos == 0 */
str++;
len--;
pos = 0;
if (pos < len) {
/* T found, there is a time section */
/* read hours, minutes, seconds, cents of second */
do {
GST_TRACE ("parsing substring %s", str);
pos = strcspn (str, "HMS,.");
ret = sscanf (str, "%d", &read);
if (ret != 1) {
GST_WARNING ("can not read integer value from string %s!", str);
goto error;
}
switch (str[pos]) {
case 'H':
hours = read;
break;
case 'M':
minutes = read;
break;
case 'S':
if (have_ms) {
/* we have read the decimal part of the seconds */
decimals = convert_to_millisecs (read, pos);
GST_TRACE ("decimal number %d (%d digits) -> %d ms", read, pos,
decimals);
} else {
/* no decimals */
seconds = read;
}
break;
case '.':
case ',':
/* we have read the integer part of a decimal number in seconds */
seconds = read;
have_ms = TRUE;
break;
default:
GST_WARNING ("unexpected char %c!", str[pos]);
goto error;
break;
}
GST_TRACE ("read number %d type %c", read, str[pos]);
str += pos + 1;
len -= (pos + 1);
} while (len > 0);
GST_TRACE ("H:M:S.MS=%d:%d:%d.%03d", hours, minutes, seconds, decimals);
}
xmlFree (prop_string);
exists = TRUE;
*property_value =
sign * ((((((gint64) years * 365 + months * 30 + days) * 24 +
hours) * 60 + minutes) * 60 + seconds) * 1000 + decimals);
GST_LOG (" - %s: %" G_GINT64_FORMAT, property_name, *property_value);
}
if (!exists) {
*property_value = default_value;
}
return exists;
error:
xmlFree (prop_string);
return FALSE;
}
static gboolean
gst_mpdparser_get_xml_node_content (xmlNode * a_node, gchar ** content)
{
xmlChar *node_content = NULL;
gboolean exists = FALSE;
node_content = xmlNodeGetContent (a_node);
if (node_content) {
exists = TRUE;
*content = (gchar *) node_content;
GST_LOG (" - %s: %s", a_node->name, *content);
}
return exists;
}
static gchar *
gst_mpdparser_get_xml_node_namespace (xmlNode * a_node, const gchar * prefix)
{
xmlNs *curr_ns;
gchar *namespace = NULL;
if (prefix == NULL) {
/* return the default namespace */
if (a_node->ns) {
namespace = xmlMemStrdup ((const gchar *) a_node->ns->href);
if (namespace) {
GST_LOG (" - default namespace: %s", namespace);
}
}
} else {
/* look for the specified prefix in the namespace list */
for (curr_ns = a_node->ns; curr_ns; curr_ns = curr_ns->next) {
if (xmlStrcmp (curr_ns->prefix, (xmlChar *) prefix) == 0) {
namespace = xmlMemStrdup ((const gchar *) curr_ns->href);
if (namespace) {
GST_LOG (" - %s namespace: %s", curr_ns->prefix, curr_ns->href);
}
}
}
}
return namespace;
}
static void
gst_mpdparser_parse_baseURL_node (GList ** list, xmlNode * a_node)
{
GstBaseURL *new_base_url;
new_base_url = g_slice_new0 (GstBaseURL);
if (new_base_url == NULL) {
GST_WARNING ("Allocation of BaseURL node failed!");
return;
}
*list = g_list_append (*list, new_base_url);
GST_LOG ("content of BaseURL node:");
gst_mpdparser_get_xml_node_content (a_node, &new_base_url->baseURL);
GST_LOG ("attributes of BaseURL node:");
gst_mpdparser_get_xml_prop_string (a_node, "serviceLocation",
&new_base_url->serviceLocation);
gst_mpdparser_get_xml_prop_string (a_node, "byteRange",
&new_base_url->byteRange);
}
static void
gst_mpdparser_parse_descriptor_type_node (GList ** list, xmlNode * a_node)
{
GstDescriptorType *new_descriptor;
new_descriptor = g_slice_new0 (GstDescriptorType);
if (new_descriptor == NULL) {
GST_WARNING ("Allocation of DescriptorType node failed!");
return;
}
*list = g_list_append (*list, new_descriptor);
GST_LOG ("attributes of %s node:", a_node->name);
gst_mpdparser_get_xml_prop_string (a_node, "schemeIdUri",
&new_descriptor->schemeIdUri);
gst_mpdparser_get_xml_prop_string (a_node, "value", &new_descriptor->value);
}
static void
gst_mpdparser_parse_content_component_node (GList ** list, xmlNode * a_node)
{
xmlNode *cur_node;
GstContentComponentNode *new_content_component;
new_content_component = g_slice_new0 (GstContentComponentNode);
if (new_content_component == NULL) {
GST_WARNING ("Allocation of ContentComponent node failed!");
return;
}
*list = g_list_append (*list, new_content_component);
GST_LOG ("attributes of ContentComponent node:");
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "id", 0,
&new_content_component->id);
gst_mpdparser_get_xml_prop_string (a_node, "lang",
&new_content_component->lang);
gst_mpdparser_get_xml_prop_string (a_node, "contentType",
&new_content_component->contentType);
gst_mpdparser_get_xml_prop_ratio (a_node, "par", &new_content_component->par);
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "Accessibility") == 0) {
gst_mpdparser_parse_descriptor_type_node
(&new_content_component->Accessibility, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Role") == 0) {
gst_mpdparser_parse_descriptor_type_node (&new_content_component->Role,
cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Rating") == 0) {
gst_mpdparser_parse_descriptor_type_node
(&new_content_component->Rating, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Viewpoint") == 0) {
gst_mpdparser_parse_descriptor_type_node
(&new_content_component->Viewpoint, cur_node);
}
}
}
}
static void
gst_mpdparser_parse_location_node (GList ** list, xmlNode * a_node)
{
gchar *location = NULL;
GST_LOG ("content of Location node:");
if (gst_mpdparser_get_xml_node_content (a_node, &location))
*list = g_list_append (*list, location);
}
static void
gst_mpdparser_parse_subrepresentation_node (GList ** list, xmlNode * a_node)
{
GstSubRepresentationNode *new_subrep;
new_subrep = g_slice_new0 (GstSubRepresentationNode);
if (new_subrep == NULL) {
GST_WARNING ("Allocation of SubRepresentation node failed!");
return;
}
*list = g_list_append (*list, new_subrep);
GST_LOG ("attributes of SubRepresentation node:");
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "level", 0,
&new_subrep->level);
gst_mpdparser_get_xml_prop_uint_vector_type (a_node, "dependencyLevel",
&new_subrep->dependencyLevel, &new_subrep->size);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "bandwidth", 0,
&new_subrep->bandwidth);
gst_mpdparser_get_xml_prop_string_vector_type (a_node,
"contentComponent", &new_subrep->contentComponent);
/* RepresentationBase extension */
gst_mpdparser_parse_representation_base_type (&new_subrep->RepresentationBase,
a_node);
}
static GstSegmentURLNode *
gst_mpdparser_clone_segment_url (GstSegmentURLNode * seg_url)
{
GstSegmentURLNode *clone = NULL;
if (seg_url) {
clone = g_slice_new0 (GstSegmentURLNode);
if (clone) {
clone->media = xmlMemStrdup (seg_url->media);
clone->mediaRange = gst_mpdparser_clone_range (seg_url->mediaRange);
clone->index = xmlMemStrdup (seg_url->index);
clone->indexRange = gst_mpdparser_clone_range (seg_url->indexRange);
} else {
GST_WARNING ("Allocation of SegmentURL node failed!");
}
}
return clone;
}
static void
gst_mpdparser_parse_segment_url_node (GList ** list, xmlNode * a_node)
{
GstSegmentURLNode *new_segment_url;
new_segment_url = g_slice_new0 (GstSegmentURLNode);
if (new_segment_url == NULL) {
GST_WARNING ("Allocation of SegmentURL node failed!");
return;
}
*list = g_list_append (*list, new_segment_url);
GST_LOG ("attributes of SegmentURL node:");
gst_mpdparser_get_xml_prop_string (a_node, "media", &new_segment_url->media);
gst_mpdparser_get_xml_prop_range (a_node, "mediaRange",
&new_segment_url->mediaRange);
gst_mpdparser_get_xml_prop_string (a_node, "index", &new_segment_url->index);
gst_mpdparser_get_xml_prop_range (a_node, "indexRange",
&new_segment_url->indexRange);
}
static void
gst_mpdparser_parse_url_type_node (GstURLType ** pointer, xmlNode * a_node)
{
GstURLType *new_url_type;
gst_mpdparser_free_url_type_node (*pointer);
*pointer = new_url_type = g_slice_new0 (GstURLType);
if (new_url_type == NULL) {
GST_WARNING ("Allocation of URLType node failed!");
return;
}
GST_LOG ("attributes of URLType node:");
gst_mpdparser_get_xml_prop_string (a_node, "sourceURL",
&new_url_type->sourceURL);
gst_mpdparser_get_xml_prop_range (a_node, "range", &new_url_type->range);
}
static void
gst_mpdparser_parse_seg_base_type_ext (GstSegmentBaseType ** pointer,
xmlNode * a_node, GstSegmentBaseType * parent)
{
xmlNode *cur_node;
GstSegmentBaseType *seg_base_type;
guint intval;
guint64 int64val;
gboolean boolval;
GstRange *rangeval;
gst_mpdparser_free_seg_base_type_ext (*pointer);
*pointer = seg_base_type = g_slice_new0 (GstSegmentBaseType);
if (seg_base_type == NULL) {
GST_WARNING ("Allocation of SegmentBaseType node failed!");
return;
}
/* Initialize values that have defaults */
seg_base_type->indexRangeExact = FALSE;
/* Inherit attribute values from parent */
if (parent) {
seg_base_type->timescale = parent->timescale;
seg_base_type->presentationTimeOffset = parent->presentationTimeOffset;
seg_base_type->indexRange = gst_mpdparser_clone_range (parent->indexRange);
seg_base_type->indexRangeExact = parent->indexRangeExact;
seg_base_type->Initialization =
gst_mpdparser_clone_URL (parent->Initialization);
seg_base_type->RepresentationIndex =
gst_mpdparser_clone_URL (parent->RepresentationIndex);
}
/* We must retrieve each value first to see if it exists. If it does not
* exist, we do not want to overwrite an inherited value */
GST_LOG ("attributes of SegmentBaseType extension:");
if (gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "timescale", 0,
&intval)) {
seg_base_type->timescale = intval;
}
if (gst_mpdparser_get_xml_prop_unsigned_integer_64 (a_node,
"presentationTimeOffset", 0, &int64val)) {
seg_base_type->presentationTimeOffset = int64val;
}
if (gst_mpdparser_get_xml_prop_range (a_node, "indexRange", &rangeval)) {
if (seg_base_type->indexRange) {
g_slice_free (GstRange, seg_base_type->indexRange);
}
seg_base_type->indexRange = rangeval;
}
if (gst_mpdparser_get_xml_prop_boolean (a_node, "indexRangeExact",
FALSE, &boolval)) {
seg_base_type->indexRangeExact = boolval;
}
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "Initialization") == 0 ||
xmlStrcmp (cur_node->name, (xmlChar *) "Initialisation") == 0) {
/* parse will free the previous pointer to create a new one */
gst_mpdparser_parse_url_type_node (&seg_base_type->Initialization,
cur_node);
} else if (xmlStrcmp (cur_node->name,
(xmlChar *) "RepresentationIndex") == 0) {
/* parse will free the previous pointer to create a new one */
gst_mpdparser_parse_url_type_node (&seg_base_type->RepresentationIndex,
cur_node);
}
}
}
}
static GstSNode *
gst_mpdparser_clone_s_node (GstSNode * pointer)
{
GstSNode *clone = NULL;
if (pointer) {
clone = g_slice_new0 (GstSNode);
if (clone) {
clone->t = pointer->t;
clone->d = pointer->d;
clone->r = pointer->r;
} else {
GST_WARNING ("Allocation of S node failed!");
}
}
return clone;
}
static void
gst_mpdparser_parse_s_node (GQueue * queue, xmlNode * a_node)
{
GstSNode *new_s_node;
new_s_node = g_slice_new0 (GstSNode);
if (new_s_node == NULL) {
GST_WARNING ("Allocation of S node failed!");
return;
}
g_queue_push_tail (queue, new_s_node);
GST_LOG ("attributes of S node:");
gst_mpdparser_get_xml_prop_unsigned_integer_64 (a_node, "t", 0,
&new_s_node->t);
gst_mpdparser_get_xml_prop_unsigned_integer_64 (a_node, "d", 0,
&new_s_node->d);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "r", 0, &new_s_node->r);
}
static GstSegmentTimelineNode *
gst_mpdparser_clone_segment_timeline (GstSegmentTimelineNode * pointer)
{
GstSegmentTimelineNode *clone = NULL;
if (pointer) {
clone = gst_mpdparser_segment_timeline_node_new ();
if (clone) {
GList *list;
for (list = g_queue_peek_head_link (&pointer->S); list;
list = g_list_next (list)) {
GstSNode *s_node;
s_node = (GstSNode *) list->data;
if (s_node) {
g_queue_push_tail (&clone->S, gst_mpdparser_clone_s_node (s_node));
}
}
} else {
GST_WARNING ("Allocation of SegmentTimeline node failed!");
}
}
return clone;
}
static void
gst_mpdparser_parse_segment_timeline_node (GstSegmentTimelineNode ** pointer,
xmlNode * a_node)
{
xmlNode *cur_node;
GstSegmentTimelineNode *new_seg_timeline;
gst_mpdparser_free_segment_timeline_node (*pointer);
*pointer = new_seg_timeline = gst_mpdparser_segment_timeline_node_new ();
if (new_seg_timeline == NULL) {
GST_WARNING ("Allocation of SegmentTimeline node failed!");
return;
}
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "S") == 0) {
gst_mpdparser_parse_s_node (&new_seg_timeline->S, cur_node);
}
}
}
}
static void
gst_mpdparser_parse_mult_seg_base_type_ext (GstMultSegmentBaseType ** pointer,
xmlNode * a_node, GstMultSegmentBaseType * parent)
{
xmlNode *cur_node;
GstMultSegmentBaseType *mult_seg_base_type;
guint intval;
gst_mpdparser_free_mult_seg_base_type_ext (*pointer);
*pointer = mult_seg_base_type = g_slice_new0 (GstMultSegmentBaseType);
if (mult_seg_base_type == NULL) {
GST_WARNING ("Allocation of MultipleSegmentBaseType node failed!");
return;
}
mult_seg_base_type->duration = 0;
mult_seg_base_type->startNumber = 1;
/* Inherit attribute values from parent */
if (parent) {
mult_seg_base_type->duration = parent->duration;
mult_seg_base_type->startNumber = parent->startNumber;
mult_seg_base_type->SegmentTimeline =
gst_mpdparser_clone_segment_timeline (parent->SegmentTimeline);
mult_seg_base_type->BitstreamSwitching =
gst_mpdparser_clone_URL (parent->BitstreamSwitching);
}
GST_LOG ("attributes of MultipleSegmentBaseType extension:");
if (gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "duration", 0,
&intval)) {
mult_seg_base_type->duration = intval;
}
if (gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "startNumber", 1,
&intval)) {
mult_seg_base_type->startNumber = intval;
}
GST_LOG ("extension of MultipleSegmentBaseType extension:");
gst_mpdparser_parse_seg_base_type_ext (&mult_seg_base_type->SegBaseType,
a_node, (parent ? parent->SegBaseType : NULL));
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentTimeline") == 0) {
/* parse frees the segmenttimeline if any */
gst_mpdparser_parse_segment_timeline_node
(&mult_seg_base_type->SegmentTimeline, cur_node);
} else if (xmlStrcmp (cur_node->name,
(xmlChar *) "BitstreamSwitching") == 0) {
/* parse frees the old url before setting the new one */
gst_mpdparser_parse_url_type_node
(&mult_seg_base_type->BitstreamSwitching, cur_node);
}
}
}
}
static void
gst_mpdparser_parse_segment_list_node (GstSegmentListNode ** pointer,
xmlNode * a_node, GstSegmentListNode * parent)
{
xmlNode *cur_node;
GstSegmentListNode *new_segment_list;
gst_mpdparser_free_segment_list_node (*pointer);
*pointer = new_segment_list = g_slice_new0 (GstSegmentListNode);
if (new_segment_list == NULL) {
GST_WARNING ("Allocation of SegmentList node failed!");
return;
}
/* Inherit attribute values from parent */
if (parent) {
GList *list;
GstSegmentURLNode *seg_url;
for (list = g_list_first (parent->SegmentURL); list;
list = g_list_next (list)) {
seg_url = (GstSegmentURLNode *) list->data;
new_segment_list->SegmentURL =
g_list_append (new_segment_list->SegmentURL,
gst_mpdparser_clone_segment_url (seg_url));
}
}
GST_LOG ("extension of SegmentList node:");
gst_mpdparser_parse_mult_seg_base_type_ext
(&new_segment_list->MultSegBaseType, a_node,
(parent ? parent->MultSegBaseType : NULL));
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentURL") == 0) {
gst_mpdparser_parse_segment_url_node (&new_segment_list->SegmentURL,
cur_node);
}
}
}
}
static void
gst_mpdparser_parse_representation_base_type (GstRepresentationBaseType **
pointer, xmlNode * a_node)
{
xmlNode *cur_node;
GstRepresentationBaseType *representation_base;
gst_mpdparser_free_representation_base_type (*pointer);
*pointer = representation_base = g_slice_new0 (GstRepresentationBaseType);
if (representation_base == NULL) {
GST_WARNING ("Allocation of RepresentationBaseType node failed!");
return;
}
GST_LOG ("attributes of RepresentationBaseType extension:");
gst_mpdparser_get_xml_prop_string (a_node, "profiles",
&representation_base->profiles);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "width", 0,
&representation_base->width);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "height", 0,
&representation_base->height);
gst_mpdparser_get_xml_prop_ratio (a_node, "sar", &representation_base->sar);
gst_mpdparser_get_xml_prop_framerate (a_node, "frameRate",
&representation_base->frameRate);
gst_mpdparser_get_xml_prop_string (a_node, "audioSamplingRate",
&representation_base->audioSamplingRate);
gst_mpdparser_get_xml_prop_string (a_node, "mimeType",
&representation_base->mimeType);
gst_mpdparser_get_xml_prop_string (a_node, "segmentProfiles",
&representation_base->segmentProfiles);
gst_mpdparser_get_xml_prop_string (a_node, "codecs",
&representation_base->codecs);
gst_mpdparser_get_xml_prop_double (a_node, "maximumSAPPeriod",
&representation_base->maximumSAPPeriod);
gst_mpdparser_get_xml_prop_SAP_type (a_node, "startWithSAP",
&representation_base->startWithSAP);
gst_mpdparser_get_xml_prop_double (a_node, "maxPlayoutRate",
&representation_base->maxPlayoutRate);
gst_mpdparser_get_xml_prop_boolean (a_node, "codingDependency",
FALSE, &representation_base->codingDependency);
gst_mpdparser_get_xml_prop_string (a_node, "scanType",
&representation_base->scanType);
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "FramePacking") == 0) {
gst_mpdparser_parse_descriptor_type_node
(&representation_base->FramePacking, cur_node);
} else if (xmlStrcmp (cur_node->name,
(xmlChar *) "AudioChannelConfiguration") == 0) {
gst_mpdparser_parse_descriptor_type_node
(&representation_base->AudioChannelConfiguration, cur_node);
} else if (xmlStrcmp (cur_node->name,
(xmlChar *) "ContentProtection") == 0) {
gst_mpdparser_parse_descriptor_type_node
(&representation_base->ContentProtection, cur_node);
}
}
}
}
static void
gst_mpdparser_parse_representation_node (GList ** list, xmlNode * a_node,
GstAdaptationSetNode * parent)
{
xmlNode *cur_node;
GstRepresentationNode *new_representation;
new_representation = g_slice_new0 (GstRepresentationNode);
if (new_representation == NULL) {
GST_WARNING ("Allocation of Representation node failed!");
return;
}
*list = g_list_append (*list, new_representation);
GST_LOG ("attributes of Representation node:");
gst_mpdparser_get_xml_prop_string (a_node, "id", &new_representation->id);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "bandwidth", 0,
&new_representation->bandwidth);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "qualityRanking", 0,
&new_representation->qualityRanking);
gst_mpdparser_get_xml_prop_string_vector_type (a_node, "dependencyId",
&new_representation->dependencyId);
gst_mpdparser_get_xml_prop_string_vector_type (a_node,
"mediaStreamStructureId", &new_representation->mediaStreamStructureId);
/* RepresentationBase extension */
gst_mpdparser_parse_representation_base_type
(&new_representation->RepresentationBase, a_node);
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentBase") == 0) {
gst_mpdparser_parse_seg_base_type_ext (&new_representation->SegmentBase,
cur_node, parent->SegmentBase);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentTemplate") == 0) {
gst_mpdparser_parse_segment_template_node
(&new_representation->SegmentTemplate, cur_node,
parent->SegmentTemplate);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentList") == 0) {
gst_mpdparser_parse_segment_list_node (&new_representation->SegmentList,
cur_node, parent->SegmentList);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "BaseURL") == 0) {
gst_mpdparser_parse_baseURL_node (&new_representation->BaseURLs,
cur_node);
} else if (xmlStrcmp (cur_node->name,
(xmlChar *) "SubRepresentation") == 0) {
gst_mpdparser_parse_subrepresentation_node
(&new_representation->SubRepresentations, cur_node);
}
}
}
}
static void
gst_mpdparser_parse_adaptation_set_node (GList ** list, xmlNode * a_node,
GstPeriodNode * parent)
{
xmlNode *cur_node;
GstAdaptationSetNode *new_adap_set;
new_adap_set = g_slice_new0 (GstAdaptationSetNode);
if (new_adap_set == NULL) {
GST_WARNING ("Allocation of AdaptationSet node failed!");
return;
}
*list = g_list_append (*list, new_adap_set);
GST_LOG ("attributes of AdaptationSet node:");
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "id", 0,
&new_adap_set->id);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "group", 0,
&new_adap_set->group);
gst_mpdparser_get_xml_prop_string (a_node, "lang", &new_adap_set->lang);
gst_mpdparser_get_xml_prop_string (a_node, "contentType",
&new_adap_set->contentType);
gst_mpdparser_get_xml_prop_ratio (a_node, "par", &new_adap_set->par);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "minBandwidth", 0,
&new_adap_set->minBandwidth);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "maxBandwidth", 0,
&new_adap_set->maxBandwidth);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "minWidth", 0,
&new_adap_set->minWidth);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "maxWidth", 0,
&new_adap_set->maxWidth);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "minHeight", 0,
&new_adap_set->minHeight);
gst_mpdparser_get_xml_prop_unsigned_integer (a_node, "maxHeight", 0,
&new_adap_set->maxHeight);
gst_mpdparser_get_xml_prop_framerate (a_node, "minFrameRate",
&new_adap_set->minFrameRate);
gst_mpdparser_get_xml_prop_framerate (a_node, "maxFrameRate",
&new_adap_set->maxFrameRate);
gst_mpdparser_get_xml_prop_cond_uint (a_node, "segmentAlignment",
&new_adap_set->segmentAlignment);
gst_mpdparser_get_xml_prop_cond_uint (a_node, "subsegmentAlignment",
&new_adap_set->subsegmentAlignment);
gst_mpdparser_get_xml_prop_SAP_type (a_node, "subsegmentStartsWithSAP",
&new_adap_set->subsegmentStartsWithSAP);
/* RepresentationBase extension */
gst_mpdparser_parse_representation_base_type
(&new_adap_set->RepresentationBase, a_node);
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "Accessibility") == 0) {
gst_mpdparser_parse_descriptor_type_node (&new_adap_set->Accessibility,
cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Role") == 0) {
gst_mpdparser_parse_descriptor_type_node (&new_adap_set->Role,
cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Rating") == 0) {
gst_mpdparser_parse_descriptor_type_node (&new_adap_set->Rating,
cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Viewpoint") == 0) {
gst_mpdparser_parse_descriptor_type_node (&new_adap_set->Viewpoint,
cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "BaseURL") == 0) {
gst_mpdparser_parse_baseURL_node (&new_adap_set->BaseURLs, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentBase") == 0) {
gst_mpdparser_parse_seg_base_type_ext (&new_adap_set->SegmentBase,
cur_node, parent->SegmentBase);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentList") == 0) {
gst_mpdparser_parse_segment_list_node (&new_adap_set->SegmentList,
cur_node, parent->SegmentList);
} else if (xmlStrcmp (cur_node->name,
(xmlChar *) "ContentComponent") == 0) {
gst_mpdparser_parse_content_component_node
(&new_adap_set->ContentComponents, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentTemplate") == 0) {
gst_mpdparser_parse_segment_template_node
(&new_adap_set->SegmentTemplate, cur_node, parent->SegmentTemplate);
}
}
}
/* We must parse Representation after everything else in the AdaptationSet
* has been parsed because certain Representation child elements can inherit
* attributes specified by the same element in the AdaptationSet
*/
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "Representation") == 0) {
gst_mpdparser_parse_representation_node (&new_adap_set->Representations,
cur_node, new_adap_set);
}
}
}
}
static void
gst_mpdparser_parse_subset_node (GList ** list, xmlNode * a_node)
{
GstSubsetNode *new_subset;
new_subset = g_slice_new0 (GstSubsetNode);
if (new_subset == NULL) {
GST_WARNING ("Allocation of Subset node failed!");
return;
}
*list = g_list_append (*list, new_subset);
GST_LOG ("attributes of Subset node:");
gst_mpdparser_get_xml_prop_uint_vector_type (a_node, "contains",
&new_subset->contains, &new_subset->size);
}
static void
gst_mpdparser_parse_segment_template_node (GstSegmentTemplateNode ** pointer,
xmlNode * a_node, GstSegmentTemplateNode * parent)
{
GstSegmentTemplateNode *new_segment_template;
gchar *strval;
gst_mpdparser_free_segment_template_node (*pointer);
*pointer = new_segment_template = g_slice_new0 (GstSegmentTemplateNode);
if (new_segment_template == NULL) {
GST_WARNING ("Allocation of SegmentTemplate node failed!");
return;
}
/* Inherit attribute values from parent */
if (parent) {
new_segment_template->media = xmlMemStrdup (parent->media);
new_segment_template->index = xmlMemStrdup (parent->index);
new_segment_template->initialization =
xmlMemStrdup (parent->initialization);
new_segment_template->bitstreamSwitching =
xmlMemStrdup (parent->bitstreamSwitching);
}
GST_LOG ("extension of SegmentTemplate node:");
gst_mpdparser_parse_mult_seg_base_type_ext
(&new_segment_template->MultSegBaseType, a_node,
(parent ? parent->MultSegBaseType : NULL));
GST_LOG ("attributes of SegmentTemplate node:");
if (gst_mpdparser_get_xml_prop_string (a_node, "media", &strval)) {
new_segment_template->media = strval;
}
if (gst_mpdparser_get_xml_prop_string (a_node, "index", &strval)) {
new_segment_template->index = strval;
}
if (gst_mpdparser_get_xml_prop_string (a_node, "initialization", &strval)) {
new_segment_template->initialization = strval;
}
if (gst_mpdparser_get_xml_prop_string (a_node, "bitstreamSwitching", &strval)) {
new_segment_template->bitstreamSwitching = strval;
}
}
static void
gst_mpdparser_parse_period_node (GList ** list, xmlNode * a_node)
{
xmlNode *cur_node;
GstPeriodNode *new_period;
new_period = g_slice_new0 (GstPeriodNode);
if (new_period == NULL) {
GST_WARNING ("Allocation of Period node failed!");
return;
}
*list = g_list_append (*list, new_period);
new_period->start = GST_CLOCK_TIME_NONE;
GST_LOG ("attributes of Period node:");
gst_mpdparser_get_xml_prop_string (a_node, "id", &new_period->id);
gst_mpdparser_get_xml_prop_duration (a_node, "start", -1, &new_period->start);
gst_mpdparser_get_xml_prop_duration (a_node, "duration", -1,
&new_period->duration);
gst_mpdparser_get_xml_prop_boolean (a_node, "bitstreamSwitching",
FALSE, &new_period->bitstreamSwitching);
/* explore children nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentBase") == 0) {
gst_mpdparser_parse_seg_base_type_ext (&new_period->SegmentBase,
cur_node, NULL);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentList") == 0) {
gst_mpdparser_parse_segment_list_node (&new_period->SegmentList,
cur_node, NULL);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "SegmentTemplate") == 0) {
gst_mpdparser_parse_segment_template_node (&new_period->SegmentTemplate,
cur_node, NULL);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Subset") == 0) {
gst_mpdparser_parse_subset_node (&new_period->Subsets, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "BaseURL") == 0) {
gst_mpdparser_parse_baseURL_node (&new_period->BaseURLs, cur_node);
}
}
}
/* We must parse AdaptationSet after everything else in the Period has been
* parsed because certain AdaptationSet child elements can inherit attributes
* specified by the same element in the Period
*/
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "AdaptationSet") == 0) {
gst_mpdparser_parse_adaptation_set_node (&new_period->AdaptationSets,
cur_node, new_period);
}
}
}
}
static void
gst_mpdparser_parse_program_info_node (GList ** list, xmlNode * a_node)
{
xmlNode *cur_node;
GstProgramInformationNode *new_prog_info;
new_prog_info = g_slice_new0 (GstProgramInformationNode);
if (new_prog_info == NULL) {
GST_WARNING ("Allocation of ProgramInfo node failed!");
return;
}
*list = g_list_append (*list, new_prog_info);
GST_LOG ("attributes of ProgramInformation node:");
gst_mpdparser_get_xml_prop_string (a_node, "lang", &new_prog_info->lang);
gst_mpdparser_get_xml_prop_string (a_node, "moreInformationURL",
&new_prog_info->moreInformationURL);
/* explore children nodes */
GST_LOG ("children of ProgramInformation node:");
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "Title") == 0) {
gst_mpdparser_get_xml_node_content (cur_node, &new_prog_info->Title);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Source") == 0) {
gst_mpdparser_get_xml_node_content (cur_node, &new_prog_info->Source);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Copyright") == 0) {
gst_mpdparser_get_xml_node_content (cur_node,
&new_prog_info->Copyright);
}
}
}
}
static void
gst_mpdparser_parse_metrics_range_node (GList ** list, xmlNode * a_node)
{
GstMetricsRangeNode *new_metrics_range;
new_metrics_range = g_slice_new0 (GstMetricsRangeNode);
if (new_metrics_range == NULL) {
GST_WARNING ("Allocation of Metrics Range node failed!");
return;
}
*list = g_list_append (*list, new_metrics_range);
GST_LOG ("attributes of Metrics Range node:");
gst_mpdparser_get_xml_prop_duration (a_node, "starttime", -1,
&new_metrics_range->starttime);
gst_mpdparser_get_xml_prop_duration (a_node, "duration", -1,
&new_metrics_range->duration);
}
static void
gst_mpdparser_parse_metrics_node (GList ** list, xmlNode * a_node)
{
xmlNode *cur_node;
GstMetricsNode *new_metrics;
new_metrics = g_slice_new0 (GstMetricsNode);
if (new_metrics == NULL) {
GST_WARNING ("Allocation of Metrics node failed!");
return;
}
*list = g_list_append (*list, new_metrics);
GST_LOG ("attributes of Metrics node:");
gst_mpdparser_get_xml_prop_string (a_node, "metrics", &new_metrics->metrics);
/* explore children nodes */
GST_LOG ("children of Metrics node:");
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "Range") == 0) {
gst_mpdparser_parse_metrics_range_node (&new_metrics->MetricsRanges,
cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Reporting") == 0) {
/* No reporting scheme is specified in this part of ISO/IEC 23009.
* It is expected that external specifications may define formats
* and delivery for the reporting data. */
GST_LOG (" - Reporting node found (unknown structure)");
}
}
}
}
static void
gst_mpdparser_parse_root_node (GstMPDNode ** pointer, xmlNode * a_node)
{
xmlNode *cur_node;
GstMPDNode *new_mpd;
gst_mpdparser_free_mpd_node (*pointer);
*pointer = new_mpd = g_slice_new0 (GstMPDNode);
if (new_mpd == NULL) {
GST_WARNING ("Allocation of MPD node failed!");
return;
}
GST_LOG ("namespaces of root MPD node:");
new_mpd->default_namespace =
gst_mpdparser_get_xml_node_namespace (a_node, NULL);
new_mpd->namespace_xsi = gst_mpdparser_get_xml_node_namespace (a_node, "xsi");
new_mpd->namespace_ext = gst_mpdparser_get_xml_node_namespace (a_node, "ext");
GST_LOG ("attributes of root MPD node:");
gst_mpdparser_get_xml_prop_string (a_node, "schemaLocation",
&new_mpd->schemaLocation);
gst_mpdparser_get_xml_prop_string (a_node, "id", &new_mpd->id);
gst_mpdparser_get_xml_prop_string (a_node, "profiles", &new_mpd->profiles);
gst_mpdparser_get_xml_prop_type (a_node, "type", &new_mpd->type);
gst_mpdparser_get_xml_prop_dateTime (a_node, "availabilityStartTime",
&new_mpd->availabilityStartTime);
gst_mpdparser_get_xml_prop_dateTime (a_node, "availabilityEndTime",
&new_mpd->availabilityEndTime);
gst_mpdparser_get_xml_prop_duration (a_node, "mediaPresentationDuration", -1,
&new_mpd->mediaPresentationDuration);
gst_mpdparser_get_xml_prop_duration (a_node, "minimumUpdatePeriod", -1,
&new_mpd->minimumUpdatePeriod);
gst_mpdparser_get_xml_prop_duration (a_node, "minBufferTime", -1,
&new_mpd->minBufferTime);
gst_mpdparser_get_xml_prop_duration (a_node, "timeShiftBufferDepth", -1,
&new_mpd->timeShiftBufferDepth);
gst_mpdparser_get_xml_prop_duration (a_node, "suggestedPresentationDelay", -1,
&new_mpd->suggestedPresentationDelay);
gst_mpdparser_get_xml_prop_duration (a_node, "maxSegmentDuration", -1,
&new_mpd->maxSegmentDuration);
gst_mpdparser_get_xml_prop_duration (a_node, "maxSubsegmentDuration", -1,
&new_mpd->maxSubsegmentDuration);
/* explore children Period nodes */
for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (xmlStrcmp (cur_node->name, (xmlChar *) "Period") == 0) {
gst_mpdparser_parse_period_node (&new_mpd->Periods, cur_node);
} else if (xmlStrcmp (cur_node->name,
(xmlChar *) "ProgramInformation") == 0) {
gst_mpdparser_parse_program_info_node (&new_mpd->ProgramInfo, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "BaseURL") == 0) {
gst_mpdparser_parse_baseURL_node (&new_mpd->BaseURLs, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Location") == 0) {
gst_mpdparser_parse_location_node (&new_mpd->Locations, cur_node);
} else if (xmlStrcmp (cur_node->name, (xmlChar *) "Metrics") == 0) {
gst_mpdparser_parse_metrics_node (&new_mpd->Metrics, cur_node);
}
}
}
}
/* comparison functions */
static int
strncmp_ext (const char *s1, const char *s2)
{
if (s1 == NULL && s2 == NULL)
return 0;
if (s1 == NULL && s2 != NULL)
return 1;
if (s2 == NULL && s1 != NULL)
return 1;
return strncmp (s1, s2, strlen (s2));
}
/* navigation functions */
static GstStreamMimeType
gst_mpdparser_representation_get_mimetype (GstAdaptationSetNode * adapt_set,
GstRepresentationNode * rep)
{
gchar *mime = NULL;
if (rep->RepresentationBase)
mime = rep->RepresentationBase->mimeType;
if (mime == NULL && adapt_set->RepresentationBase) {
mime = adapt_set->RepresentationBase->mimeType;
}
if (strncmp_ext (mime, "audio") == 0)
return GST_STREAM_AUDIO;
if (strncmp_ext (mime, "video") == 0)
return GST_STREAM_VIDEO;
if (strncmp_ext (mime, "application") == 0)
return GST_STREAM_APPLICATION;
return GST_STREAM_UNKNOWN;
}
static GstRepresentationNode *
gst_mpdparser_get_lowest_representation (GList * Representations)
{
GList *list = NULL;
GstRepresentationNode *rep = NULL;
GstRepresentationNode *lowest = NULL;
if (Representations == NULL)
return NULL;
for (list = g_list_first (Representations); list; list = g_list_next (list)) {
rep = (GstRepresentationNode *) list->data;
if (rep && (!lowest || rep->bandwidth < lowest->bandwidth)) {
lowest = rep;
}
}
return lowest;
}
#if 0
static GstRepresentationNode *
gst_mpdparser_get_highest_representation (GList * Representations)
{
GList *list = NULL;
if (Representations == NULL)
return NULL;
list = g_list_last (Representations);
return list ? (GstRepresentationNode *) list->data : NULL;
}
static GstRepresentationNode *
gst_mpdparser_get_representation_with_max_bandwidth (GList * Representations,
gint max_bandwidth)
{
GList *list = NULL;
GstRepresentationNode *representation, *best_rep = NULL;
if (Representations == NULL)
return NULL;
if (max_bandwidth <= 0) /* 0 => get highest representation available */
return gst_mpdparser_get_highest_representation (Representations);
for (list = g_list_first (Representations); list; list = g_list_next (list)) {
representation = (GstRepresentationNode *) list->data;
if (representation && representation->bandwidth <= max_bandwidth) {
best_rep = representation;
}
}
return best_rep;
}
#endif
static GstSegmentBaseType *
gst_mpdparser_get_segment_base (GstPeriodNode * Period,
GstAdaptationSetNode * AdaptationSet,
GstRepresentationNode * Representation)
{
GstSegmentBaseType *SegmentBase = NULL;
if (Representation && Representation->SegmentBase
&& Representation->SegmentBase->Initialization) {
SegmentBase = Representation->SegmentBase;
} else if (AdaptationSet && AdaptationSet->SegmentBase
&& AdaptationSet->SegmentBase->Initialization) {
SegmentBase = AdaptationSet->SegmentBase;
} else if (Period && Period->SegmentBase
&& Period->SegmentBase->Initialization) {
SegmentBase = Period->SegmentBase;
}
/* the SegmentBase element could be encoded also inside a SegmentList element */
if (SegmentBase == NULL) {
if (Representation && Representation->SegmentList
&& Representation->SegmentList->MultSegBaseType
&& Representation->SegmentList->MultSegBaseType->SegBaseType
&& Representation->SegmentList->MultSegBaseType->SegBaseType->
Initialization) {
SegmentBase = Representation->SegmentList->MultSegBaseType->SegBaseType;
} else if (AdaptationSet && AdaptationSet->SegmentList
&& AdaptationSet->SegmentList->MultSegBaseType
&& AdaptationSet->SegmentList->MultSegBaseType->SegBaseType
&& AdaptationSet->SegmentList->MultSegBaseType->SegBaseType->
Initialization) {
SegmentBase = AdaptationSet->SegmentList->MultSegBaseType->SegBaseType;
} else if (Period && Period->SegmentList
&& Period->SegmentList->MultSegBaseType
&& Period->SegmentList->MultSegBaseType->SegBaseType
&& Period->SegmentList->MultSegBaseType->SegBaseType->Initialization) {
SegmentBase = Period->SegmentList->MultSegBaseType->SegBaseType;
}
}
return SegmentBase;
}
gint
gst_mpdparser_get_rep_idx_with_min_bandwidth (GList * Representations)
{
GList *list = NULL, *lowest = NULL;
GstRepresentationNode *rep = NULL;
gint lowest_bandwidth = -1;
if (Representations == NULL)
return -1;
for (list = g_list_first (Representations); list; list = g_list_next (list)) {
rep = (GstRepresentationNode *) list->data;
if (rep && (!lowest || rep->bandwidth < lowest_bandwidth)) {
lowest = list;
lowest_bandwidth = rep->bandwidth;
}
}
return lowest ? g_list_position (Representations, lowest) : -1;
}
gint
gst_mpdparser_get_rep_idx_with_max_bandwidth (GList * Representations,
gint max_bandwidth)
{
GList *list = NULL, *best = NULL;
GstRepresentationNode *representation;
gint best_bandwidth = 0;
GST_DEBUG ("max_bandwidth = %i", max_bandwidth);
if (Representations == NULL)
return -1;
if (max_bandwidth <= 0) /* 0 => get lowest representation available */
return gst_mpdparser_get_rep_idx_with_min_bandwidth (Representations);
for (list = g_list_first (Representations); list; list = g_list_next (list)) {
representation = (GstRepresentationNode *) list->data;
if (representation && representation->bandwidth <= max_bandwidth &&
representation->bandwidth > best_bandwidth) {
best = list;
best_bandwidth = representation->bandwidth;
}
}
return best ? g_list_position (Representations, best) : -1;
}
static GstSegmentListNode *
gst_mpdparser_get_segment_list (GstPeriodNode * Period,
GstAdaptationSetNode * AdaptationSet,
GstRepresentationNode * Representation)
{
GstSegmentListNode *SegmentList = NULL;
if (Representation && Representation->SegmentList) {
SegmentList = Representation->SegmentList;
} else if (AdaptationSet && AdaptationSet->SegmentList) {
SegmentList = AdaptationSet->SegmentList;
} else {
SegmentList = Period->SegmentList;
}
return SegmentList;
}
/* memory management functions */
static void
gst_mpdparser_free_mpd_node (GstMPDNode * mpd_node)
{
if (mpd_node) {
if (mpd_node->default_namespace)
xmlFree (mpd_node->default_namespace);
if (mpd_node->namespace_xsi)
xmlFree (mpd_node->namespace_xsi);
if (mpd_node->namespace_ext)
xmlFree (mpd_node->namespace_ext);
if (mpd_node->schemaLocation)
xmlFree (mpd_node->schemaLocation);
if (mpd_node->id)
xmlFree (mpd_node->id);
if (mpd_node->profiles)
xmlFree (mpd_node->profiles);
if (mpd_node->availabilityStartTime)
gst_date_time_unref (mpd_node->availabilityStartTime);
if (mpd_node->availabilityEndTime)
gst_date_time_unref (mpd_node->availabilityEndTime);
g_list_free_full (mpd_node->ProgramInfo,
(GDestroyNotify) gst_mpdparser_free_prog_info_node);
g_list_free_full (mpd_node->BaseURLs,
(GDestroyNotify) gst_mpdparser_free_base_url_node);
g_list_free_full (mpd_node->Locations, (GDestroyNotify) xmlFree);
g_list_free_full (mpd_node->Periods,
(GDestroyNotify) gst_mpdparser_free_period_node);
g_list_free_full (mpd_node->Metrics,
(GDestroyNotify) gst_mpdparser_free_metrics_node);
g_slice_free (GstMPDNode, mpd_node);
}
}
static void
gst_mpdparser_free_prog_info_node (GstProgramInformationNode * prog_info_node)
{
if (prog_info_node) {
if (prog_info_node->lang)
xmlFree (prog_info_node->lang);
if (prog_info_node->moreInformationURL)
xmlFree (prog_info_node->moreInformationURL);
if (prog_info_node->Title)
xmlFree (prog_info_node->Title);
if (prog_info_node->Source)
xmlFree (prog_info_node->Source);
if (prog_info_node->Copyright)
xmlFree (prog_info_node->Copyright);
g_slice_free (GstProgramInformationNode, prog_info_node);
}
}
static void
gst_mpdparser_free_metrics_node (GstMetricsNode * metrics_node)
{
if (metrics_node) {
if (metrics_node->metrics)
xmlFree (metrics_node->metrics);
g_list_free_full (metrics_node->MetricsRanges,
(GDestroyNotify) gst_mpdparser_free_metrics_range_node);
g_slice_free (GstMetricsNode, metrics_node);
}
}
static void
gst_mpdparser_free_metrics_range_node (GstMetricsRangeNode * metrics_range_node)
{
if (metrics_range_node) {
g_slice_free (GstMetricsRangeNode, metrics_range_node);
}
}
static void
gst_mpdparser_free_period_node (GstPeriodNode * period_node)
{
if (period_node) {
if (period_node->id)
xmlFree (period_node->id);
gst_mpdparser_free_seg_base_type_ext (period_node->SegmentBase);
gst_mpdparser_free_segment_list_node (period_node->SegmentList);
gst_mpdparser_free_segment_template_node (period_node->SegmentTemplate);
g_list_free_full (period_node->AdaptationSets,
(GDestroyNotify) gst_mpdparser_free_adaptation_set_node);
g_list_free_full (period_node->Subsets,
(GDestroyNotify) gst_mpdparser_free_subset_node);
g_list_free_full (period_node->BaseURLs,
(GDestroyNotify) gst_mpdparser_free_base_url_node);
g_slice_free (GstPeriodNode, period_node);
}
}
static void
gst_mpdparser_free_subset_node (GstSubsetNode * subset_node)
{
if (subset_node) {
if (subset_node->contains)
xmlFree (subset_node->contains);
g_slice_free (GstSubsetNode, subset_node);
}
}
static void
gst_mpdparser_free_segment_template_node (GstSegmentTemplateNode *
segment_template_node)
{
if (segment_template_node) {
if (segment_template_node->media)
xmlFree (segment_template_node->media);
if (segment_template_node->index)
xmlFree (segment_template_node->index);
if (segment_template_node->initialization)
xmlFree (segment_template_node->initialization);
if (segment_template_node->bitstreamSwitching)
xmlFree (segment_template_node->bitstreamSwitching);
/* MultipleSegmentBaseType extension */
gst_mpdparser_free_mult_seg_base_type_ext
(segment_template_node->MultSegBaseType);
g_slice_free (GstSegmentTemplateNode, segment_template_node);
}
}
static void
gst_mpdparser_free_representation_base_type (GstRepresentationBaseType *
representation_base)
{
if (representation_base) {
if (representation_base->profiles)
xmlFree (representation_base->profiles);
g_slice_free (GstRatio, representation_base->sar);
g_slice_free (GstFrameRate, representation_base->frameRate);
if (representation_base->audioSamplingRate)
xmlFree (representation_base->audioSamplingRate);
if (representation_base->mimeType)
xmlFree (representation_base->mimeType);
if (representation_base->segmentProfiles)
xmlFree (representation_base->segmentProfiles);
if (representation_base->codecs)
xmlFree (representation_base->codecs);
if (representation_base->scanType)
xmlFree (representation_base->scanType);
g_list_free_full (representation_base->FramePacking,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (representation_base->AudioChannelConfiguration,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (representation_base->ContentProtection,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_slice_free (GstRepresentationBaseType, representation_base);
}
}
static void
gst_mpdparser_free_adaptation_set_node (GstAdaptationSetNode *
adaptation_set_node)
{
if (adaptation_set_node) {
if (adaptation_set_node->lang)
xmlFree (adaptation_set_node->lang);
if (adaptation_set_node->contentType)
xmlFree (adaptation_set_node->contentType);
g_slice_free (GstRatio, adaptation_set_node->par);
g_slice_free (GstFrameRate, adaptation_set_node->minFrameRate);
g_slice_free (GstFrameRate, adaptation_set_node->maxFrameRate);
g_slice_free (GstConditionalUintType,
adaptation_set_node->segmentAlignment);
g_slice_free (GstConditionalUintType,
adaptation_set_node->subsegmentAlignment);
g_list_free_full (adaptation_set_node->Accessibility,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (adaptation_set_node->Role,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (adaptation_set_node->Rating,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (adaptation_set_node->Viewpoint,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
gst_mpdparser_free_representation_base_type
(adaptation_set_node->RepresentationBase);
gst_mpdparser_free_seg_base_type_ext (adaptation_set_node->SegmentBase);
gst_mpdparser_free_segment_list_node (adaptation_set_node->SegmentList);
gst_mpdparser_free_segment_template_node
(adaptation_set_node->SegmentTemplate);
g_list_free_full (adaptation_set_node->BaseURLs,
(GDestroyNotify) gst_mpdparser_free_base_url_node);
g_list_free_full (adaptation_set_node->Representations,
(GDestroyNotify) gst_mpdparser_free_representation_node);
g_list_free_full (adaptation_set_node->ContentComponents,
(GDestroyNotify) gst_mpdparser_free_content_component_node);
g_slice_free (GstAdaptationSetNode, adaptation_set_node);
}
}
static void
gst_mpdparser_free_representation_node (GstRepresentationNode *
representation_node)
{
if (representation_node) {
if (representation_node->id)
xmlFree (representation_node->id);
g_strfreev (representation_node->dependencyId);
g_strfreev (representation_node->mediaStreamStructureId);
gst_mpdparser_free_representation_base_type
(representation_node->RepresentationBase);
g_list_free_full (representation_node->SubRepresentations,
(GDestroyNotify) gst_mpdparser_free_subrepresentation_node);
gst_mpdparser_free_seg_base_type_ext (representation_node->SegmentBase);
gst_mpdparser_free_segment_template_node
(representation_node->SegmentTemplate);
gst_mpdparser_free_segment_list_node (representation_node->SegmentList);
g_list_free_full (representation_node->BaseURLs,
(GDestroyNotify) gst_mpdparser_free_base_url_node);
g_slice_free (GstRepresentationNode, representation_node);
}
}
static void
gst_mpdparser_free_subrepresentation_node (GstSubRepresentationNode *
subrep_node)
{
if (subrep_node) {
gst_mpdparser_free_representation_base_type
(subrep_node->RepresentationBase);
if (subrep_node->dependencyLevel)
xmlFree (subrep_node->dependencyLevel);
g_strfreev (subrep_node->contentComponent);
g_slice_free (GstSubRepresentationNode, subrep_node);
}
}
static void
gst_mpdparser_free_s_node (GstSNode * s_node)
{
if (s_node) {
g_slice_free (GstSNode, s_node);
}
}
static GstSegmentTimelineNode *
gst_mpdparser_segment_timeline_node_new (void)
{
GstSegmentTimelineNode *node = g_slice_new0 (GstSegmentTimelineNode);
g_queue_init (&node->S);
return node;
}
static void
gst_mpdparser_free_segment_timeline_node (GstSegmentTimelineNode * seg_timeline)
{
if (seg_timeline) {
g_queue_foreach (&seg_timeline->S, (GFunc) gst_mpdparser_free_s_node, NULL);
g_queue_clear (&seg_timeline->S);
g_slice_free (GstSegmentTimelineNode, seg_timeline);
}
}
static void
gst_mpdparser_free_url_type_node (GstURLType * url_type_node)
{
if (url_type_node) {
if (url_type_node->sourceURL)
xmlFree (url_type_node->sourceURL);
g_slice_free (GstRange, url_type_node->range);
g_slice_free (GstURLType, url_type_node);
}
}
static void
gst_mpdparser_free_seg_base_type_ext (GstSegmentBaseType * seg_base_type)
{
if (seg_base_type) {
if (seg_base_type->indexRange)
g_slice_free (GstRange, seg_base_type->indexRange);
gst_mpdparser_free_url_type_node (seg_base_type->Initialization);
gst_mpdparser_free_url_type_node (seg_base_type->RepresentationIndex);
g_slice_free (GstSegmentBaseType, seg_base_type);
}
}
static void
gst_mpdparser_free_mult_seg_base_type_ext (GstMultSegmentBaseType *
mult_seg_base_type)
{
if (mult_seg_base_type) {
/* SegmentBaseType extension */
gst_mpdparser_free_seg_base_type_ext (mult_seg_base_type->SegBaseType);
gst_mpdparser_free_segment_timeline_node
(mult_seg_base_type->SegmentTimeline);
gst_mpdparser_free_url_type_node (mult_seg_base_type->BitstreamSwitching);
g_slice_free (GstMultSegmentBaseType, mult_seg_base_type);
}
}
static void
gst_mpdparser_free_segment_list_node (GstSegmentListNode * segment_list_node)
{
if (segment_list_node) {
g_list_free_full (segment_list_node->SegmentURL,
(GDestroyNotify) gst_mpdparser_free_segment_url_node);
/* MultipleSegmentBaseType extension */
gst_mpdparser_free_mult_seg_base_type_ext
(segment_list_node->MultSegBaseType);
g_slice_free (GstSegmentListNode, segment_list_node);
}
}
static void
gst_mpdparser_free_segment_url_node (GstSegmentURLNode * segment_url)
{
if (segment_url) {
if (segment_url->media)
xmlFree (segment_url->media);
g_slice_free (GstRange, segment_url->mediaRange);
if (segment_url->index)
xmlFree (segment_url->index);
g_slice_free (GstRange, segment_url->indexRange);
g_slice_free (GstSegmentURLNode, segment_url);
}
}
static void
gst_mpdparser_free_base_url_node (GstBaseURL * base_url_node)
{
if (base_url_node) {
if (base_url_node->baseURL)
xmlFree (base_url_node->baseURL);
if (base_url_node->serviceLocation)
xmlFree (base_url_node->serviceLocation);
if (base_url_node->byteRange)
xmlFree (base_url_node->byteRange);
g_slice_free (GstBaseURL, base_url_node);
}
}
static void
gst_mpdparser_free_descriptor_type_node (GstDescriptorType * descriptor_type)
{
if (descriptor_type) {
if (descriptor_type->schemeIdUri)
xmlFree (descriptor_type->schemeIdUri);
if (descriptor_type->value)
xmlFree (descriptor_type->value);
g_slice_free (GstDescriptorType, descriptor_type);
}
}
static void
gst_mpdparser_free_content_component_node (GstContentComponentNode *
content_component_node)
{
if (content_component_node) {
if (content_component_node->lang)
xmlFree (content_component_node->lang);
if (content_component_node->contentType)
xmlFree (content_component_node->contentType);
g_slice_free (GstRatio, content_component_node->par);
g_list_free_full (content_component_node->Accessibility,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (content_component_node->Role,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (content_component_node->Rating,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_list_free_full (content_component_node->Viewpoint,
(GDestroyNotify) gst_mpdparser_free_descriptor_type_node);
g_slice_free (GstContentComponentNode, content_component_node);
}
}
static void
gst_mpdparser_free_stream_period (GstStreamPeriod * stream_period)
{
if (stream_period) {
g_slice_free (GstStreamPeriod, stream_period);
}
}
static void
gst_mpdparser_free_media_segment (GstMediaSegment * media_segment)
{
if (media_segment) {
g_slice_free (GstMediaSegment, media_segment);
}
}
static void
gst_mpdparser_init_active_stream_segments (GstActiveStream * stream)
{
g_assert (stream->segments == NULL);
stream->segments = g_ptr_array_new ();
g_ptr_array_set_free_func (stream->segments,
(GDestroyNotify) gst_mpdparser_free_media_segment);
}
static void
gst_mpdparser_free_active_stream (GstActiveStream * active_stream)
{
if (active_stream) {
g_free (active_stream->baseURL);
active_stream->baseURL = NULL;
g_free (active_stream->queryURL);
active_stream->queryURL = NULL;
if (active_stream->segments)
g_ptr_array_unref (active_stream->segments);
g_slice_free (GstActiveStream, active_stream);
}
}
static gchar *
gst_mpdparser_get_mediaURL (GstActiveStream * stream,
GstSegmentURLNode * segmentURL)
{
const gchar *url_prefix;
g_return_val_if_fail (stream != NULL, NULL);
g_return_val_if_fail (segmentURL != NULL, NULL);
url_prefix = segmentURL->media ? segmentURL->media : stream->baseURL;
g_return_val_if_fail (url_prefix != NULL, NULL);
return segmentURL->media;
}
static const gchar *
gst_mpdparser_get_initializationURL (GstActiveStream * stream,
GstURLType * InitializationURL)
{
const gchar *url_prefix;
g_return_val_if_fail (stream != NULL, NULL);
g_return_val_if_fail (InitializationURL != NULL, NULL);
url_prefix = InitializationURL->sourceURL ? InitializationURL->sourceURL :
stream->baseURL;
return url_prefix;
}
/* ISO/IEC 23009-1:2004 5.3.9.4.4 */
static gboolean
validate_format (const gchar * format)
{
gchar *p;
/* Check if there is a % at all */
p = strchr (format, '%');
if (!p)
return TRUE;
p++;
/* Following the % must be a 0, or any of d, x or u.
* x and u are not part of the spec, but don't hurt us
*/
if (p[0] == '0') {
p++;
while (g_ascii_isdigit (*p))
p++;
}
/* After any 0 and alphanumeric values, there must be
* an d, x or u.
*/
if (p[0] != 'd' && p[0] != 'x' && p[0] != 'u')
return FALSE;
p++;
/* And then potentially more characters without any
* further %, even if the spec does not mention this
*/
p = strchr (p, '%');
if (p)
return FALSE;
return TRUE;
}
static gchar *
promote_format_to_uint64 (const gchar * format)
{
gchar *p;
gchar *promoted_format;
/* Must be called with a validated format! */
g_return_val_if_fail (validate_format (format), NULL);
/* Check if there is a % at all */
p = strchr (format, '%');
if (!p)
return g_strdup (format);
p++;
/* Following the % must be a 0, or any of d, x or u.
* x and u are not part of the spec, but don't hurt us
*/
if (p[0] == '0') {
p++;
while (g_ascii_isdigit (*p))
p++;
}
/* After any 0 and alphanumeric values, there must be
* an d, x or u. Otherwise validation would have failed
*/
g_assert (p[0] == 'd' || p[0] == 'x' || p[0] != 'u');
promoted_format =
g_strdup_printf ("%.*s" G_GINT64_MODIFIER "%s", (gint) (p - format),
format, p);
return promoted_format;
}
static gchar *
gst_mpdparser_build_URL_from_template (const gchar * url_template,
const gchar * id, guint number, guint bandwidth, guint64 time)
{
static const gchar default_format[] = "%01d";
gchar **tokens, *token, *ret;
const gchar *format;
gint i, num_tokens;
gboolean last_token_par = TRUE; /* last token was a parameter */
g_return_val_if_fail (url_template != NULL, NULL);
tokens = g_strsplit_set (url_template, "$", -1);
if (!tokens) {
GST_WARNING ("Scan of URL template failed!");
return NULL;
}
num_tokens = g_strv_length (tokens);
for (i = 0; i < num_tokens; i++) {
token = tokens[i];
format = default_format;
if (!g_strcmp0 (token, "RepresentationID")) {
tokens[i] = g_strdup_printf ("%s", id);
g_free (token);
last_token_par = TRUE;
} else if (!strncmp (token, "Number", 6)) {
if (strlen (token) > 6) {
format = token + 6; /* format tag */
}
if (!validate_format (format))
goto invalid_format;
tokens[i] = g_strdup_printf (format, number);
g_free (token);
last_token_par = TRUE;
} else if (!strncmp (token, "Bandwidth", 9)) {
if (strlen (token) > 9) {
format = token + 9; /* format tag */
}
if (!validate_format (format))
goto invalid_format;
tokens[i] = g_strdup_printf (format, bandwidth);
g_free (token);
last_token_par = TRUE;
} else if (!strncmp (token, "Time", 4)) {
gchar *promoted_format;
if (strlen (token) > 4) {
format = token + 4; /* format tag */
}
if (!validate_format (format))
goto invalid_format;
promoted_format = promote_format_to_uint64 (format);
tokens[i] = g_strdup_printf (promoted_format, time);
g_free (promoted_format);
g_free (token);
last_token_par = TRUE;
} else if (!g_strcmp0 (token, "")) {
if (!last_token_par) {
tokens[i] = g_strdup_printf ("%s", "$");
g_free (token);
last_token_par = TRUE;
}
} else {
last_token_par = FALSE;
}
}
ret = g_strjoinv (NULL, tokens);
g_strfreev (tokens);
return ret;
invalid_format:
{
GST_ERROR ("Invalid format '%s' in '%s'", format, token);
g_strfreev (tokens);
return NULL;
}
}
guint
gst_mpd_client_get_period_index_at_time (GstMpdClient * client,
GstDateTime * time)
{
GList *iter;
guint period_idx = G_MAXUINT;
guint idx;
gint64 time_offset;
GstDateTime *avail_start =
gst_mpd_client_get_availability_start_time (client);
GstStreamPeriod *stream_period;
if (avail_start == NULL)
return 0;
time_offset = gst_mpd_client_calculate_time_difference (avail_start, time);
gst_date_time_unref (avail_start);
if (time_offset < 0)
return 0;
for (idx = 0, iter = client->periods; iter; idx++, iter = g_list_next (iter)) {
stream_period = iter->data;
if (stream_period->start <= time_offset
&& stream_period->start + stream_period->duration > time_offset) {
period_idx = idx;
break;
}
}
return period_idx;
}
static GstStreamPeriod *
gst_mpdparser_get_stream_period (GstMpdClient * client)
{
g_return_val_if_fail (client != NULL, NULL);
g_return_val_if_fail (client->periods != NULL, NULL);
return g_list_nth_data (client->periods, client->period_idx);
}
static GstRange *
gst_mpdparser_clone_range (GstRange * range)
{
GstRange *clone = NULL;
if (range) {
clone = g_slice_new0 (GstRange);
if (clone) {
clone->first_byte_pos = range->first_byte_pos;
clone->last_byte_pos = range->last_byte_pos;
} else {
GST_WARNING ("Allocation of GstRange failed!");
}
}
return clone;
}
static GstURLType *
gst_mpdparser_clone_URL (GstURLType * url)
{
GstURLType *clone = NULL;
if (url) {
clone = g_slice_new0 (GstURLType);
if (clone) {
if (url->sourceURL) {
clone->sourceURL = xmlMemStrdup (url->sourceURL);
}
clone->range = gst_mpdparser_clone_range (url->range);
} else {
GST_WARNING ("Allocation of URLType node failed!");
}
}
return clone;
}
/*
* Combine a base url with the current stream base url from the list of
* baseURLs. Takes ownership of base and returns a new base.
*/
static GstUri *
combine_urls (GstUri * base, GList * list, gchar ** query,
GstActiveStream * stream)
{
GstBaseURL *baseURL;
GstUri *ret = base;
if (list != NULL) {
baseURL = g_list_nth_data (list, stream->baseURL_idx);
if (!baseURL) {
baseURL = list->data;
}
ret = gst_uri_from_string_with_base (base, baseURL->baseURL);
gst_uri_unref (base);
if (ret && query) {
if (*query)
g_free (*query);
*query = gst_uri_get_query_string (ret);
if (*query) {
ret = gst_uri_make_writable (ret);
gst_uri_set_query_table (ret, NULL);
}
}
}
return ret;
}
/* select a stream and extract the baseURL (if present) */
static gchar *
gst_mpdparser_parse_baseURL (GstMpdClient * client, GstActiveStream * stream,
gchar ** query)
{
GstStreamPeriod *stream_period;
static const gchar empty[] = "";
gchar *ret = NULL;
GstUri *abs_url;
g_return_val_if_fail (stream != NULL, g_strdup (empty));
stream_period = gst_mpdparser_get_stream_period (client);
g_return_val_if_fail (stream_period != NULL, g_strdup (empty));
g_return_val_if_fail (stream_period->period != NULL, g_strdup (empty));
/* NULLify query return before we start */
if (query)
*query = NULL;
/* initialise base url */
abs_url =
gst_uri_from_string (client->
mpd_base_uri ? client->mpd_base_uri : client->mpd_uri);
/* combine a BaseURL at the MPD level with the current base url */
abs_url = combine_urls (abs_url, client->mpd_node->BaseURLs, query, stream);
/* combine a BaseURL at the Period level with the current base url */
abs_url =
combine_urls (abs_url, stream_period->period->BaseURLs, query, stream);
GST_DEBUG ("Current adaptation set id %i (%s)", stream->cur_adapt_set->id,
stream->cur_adapt_set->contentType);
/* combine a BaseURL at the AdaptationSet level with the current base url */
abs_url =
combine_urls (abs_url, stream->cur_adapt_set->BaseURLs, query, stream);
/* combine a BaseURL at the Representation level with the current base url */
abs_url =
combine_urls (abs_url, stream->cur_representation->BaseURLs, query,
stream);
ret = gst_uri_to_string (abs_url);
gst_uri_unref (abs_url);
return ret;
}
static GstClockTime
gst_mpd_client_get_segment_duration (GstMpdClient * client,
GstActiveStream * stream, gint64 * scale_dur)
{
GstStreamPeriod *stream_period;
GstMultSegmentBaseType *base = NULL;
GstClockTime duration = 0;
guint timescale;
g_return_val_if_fail (stream != NULL, GST_CLOCK_TIME_NONE);
stream_period = gst_mpdparser_get_stream_period (client);
g_return_val_if_fail (stream_period != NULL, GST_CLOCK_TIME_NONE);