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/* GStreamer
* Copyright (C) 2012 Smart TV Alliance
* Author: Thiago Sousa Santos <thiago.sousa.santos@collabora.com>, Collabora Ltd.
*
* gstmssmanifest.c:
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#include <string.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include "gstmssmanifest.h"
struct _GstMssManifestStream
{
xmlNodePtr xmlnode;
gint selectedQualityIndex;
};
struct _GstMssManifest
{
xmlDocPtr xml;
xmlNodePtr xmlrootnode;
GSList *streams;
};
GstMssManifest *
gst_mss_manifest_new (const GstBuffer * data)
{
GstMssManifest *manifest;
xmlNodePtr root;
xmlNodePtr nodeiter;
manifest = g_malloc0 (sizeof (GstMssManifest));
manifest->xml = xmlReadMemory ((const gchar *) GST_BUFFER_DATA (data),
GST_BUFFER_SIZE (data), "manifest", NULL, 0);
root = manifest->xmlrootnode = xmlDocGetRootElement (manifest->xml);
for (nodeiter = root->children; nodeiter; nodeiter = nodeiter->next) {
if (nodeiter->type == XML_ELEMENT_NODE
&& (strcmp ((const char *) nodeiter->name, "StreamIndex") == 0)) {
GstMssManifestStream *stream = g_new0 (GstMssManifestStream, 1);
manifest->streams = g_slist_append (manifest->streams, stream);
stream->xmlnode = nodeiter;
}
}
return manifest;
}
void
gst_mss_manifest_free (GstMssManifest * manifest)
{
g_return_if_fail (manifest != NULL);
g_slist_free_full (manifest->streams, g_free);
xmlFreeDoc (manifest->xml);
g_free (manifest);
}
GSList *
gst_mss_manifest_get_streams (GstMssManifest * manifest)
{
return manifest->streams;
}
GstMssManifestStreamType
gst_mss_manifest_stream_get_type (GstMssManifestStream * stream)
{
gchar *prop = (gchar *) xmlGetProp (stream->xmlnode, (xmlChar *) "Type");
GstMssManifestStreamType ret = MSS_STREAM_TYPE_UNKNOWN;
if (strcmp (prop, "video") == 0) {
ret = MSS_STREAM_TYPE_VIDEO;
} else if (strcmp (prop, "audio") == 0) {
ret = MSS_STREAM_TYPE_AUDIO;
}
xmlFree (prop);
return ret;
}
static GstCaps *
_gst_mss_manifest_stream_video_caps_from_fourcc (gchar * fourcc)
{
if (!fourcc)
return NULL;
if (strcmp (fourcc, "H264") == 0) {
return gst_caps_new_simple ("video/x-h264", NULL);
}
return NULL;
}
static GstCaps *
_gst_mss_manifest_stream_audio_caps_from_fourcc (gchar * fourcc)
{
if (!fourcc)
return NULL;
if (strcmp (fourcc, "AACL") == 0) {
return gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 4,
NULL);
}
return NULL;
}
static GstCaps *
_gst_mss_manifest_stream_video_caps_from_qualitylevel_xml (xmlNodePtr node)
{
GstCaps *caps;
GstStructure *structure;
gchar *fourcc = (gchar *) xmlGetProp (node, (xmlChar *) "FourCC");
gchar *max_width = (gchar *) xmlGetProp (node, (xmlChar *) "MaxWidth");
gchar *max_height = (gchar *) xmlGetProp (node, (xmlChar *) "MaxHeight");
gchar *codec_data =
(gchar *) xmlGetProp (node, (xmlChar *) "CodecPrivateData");
caps = _gst_mss_manifest_stream_video_caps_from_fourcc (fourcc);
if (!caps)
goto end;
structure = gst_caps_get_structure (caps, 0);
if (max_width)
gst_structure_set (structure, "width", G_TYPE_INT, atoi (max_width), NULL);
if (max_height)
gst_structure_set (structure, "height", G_TYPE_INT, atoi (max_height),
NULL);
if (codec_data) {
GValue *value = g_new0 (GValue, 1);
g_value_init (value, GST_TYPE_BUFFER);
gst_value_deserialize (value, (gchar *) codec_data);
gst_structure_take_value (structure, "codec_data", value);
}
end:
g_free (fourcc);
g_free (max_width);
g_free (max_height);
g_free (codec_data);
return caps;
}
static GstCaps *
_gst_mss_manifest_stream_audio_caps_from_qualitylevel_xml (xmlNodePtr node)
{
GstCaps *caps;
GstStructure *structure;
gchar *fourcc = (gchar *) xmlGetProp (node, (xmlChar *) "FourCC");
gchar *channels = (gchar *) xmlGetProp (node, (xmlChar *) "Channels");
gchar *rate = (gchar *) xmlGetProp (node, (xmlChar *) "SamplingRate");
gchar *codec_data =
(gchar *) xmlGetProp (node, (xmlChar *) "CodecPrivateData");
caps = _gst_mss_manifest_stream_audio_caps_from_fourcc (fourcc);
if (!caps)
goto end;
structure = gst_caps_get_structure (caps, 0);
if (channels)
gst_structure_set (structure, "channels", G_TYPE_INT, atoi (channels),
NULL);
if (rate)
gst_structure_set (structure, "rate", G_TYPE_INT, atoi (rate), NULL);
if (codec_data) {
GValue *value = g_new0 (GValue, 1);
g_value_init (value, GST_TYPE_BUFFER);
gst_value_deserialize (value, (gchar *) codec_data);
gst_structure_take_value (structure, "codec_data", value);
}
end:
g_free (fourcc);
g_free (channels);
g_free (rate);
g_free (codec_data);
return caps;
}
GstCaps *
gst_mss_manifest_stream_get_caps (GstMssManifestStream * stream)
{
GstMssManifestStreamType streamtype =
gst_mss_manifest_stream_get_type (stream);
/* TODO properly get the stream */
xmlNodePtr qualitylevel = stream->xmlnode->children;
while (strcmp ((gchar *) qualitylevel->name, "QualityLevel")) {
qualitylevel = qualitylevel->next;
}
if (streamtype == MSS_STREAM_TYPE_VIDEO)
return
_gst_mss_manifest_stream_video_caps_from_qualitylevel_xml
(qualitylevel);
else if (streamtype == MSS_STREAM_TYPE_AUDIO)
return
_gst_mss_manifest_stream_audio_caps_from_qualitylevel_xml
(qualitylevel);
return NULL;
}
const gchar *
gst_mss_manifest_stream_type_name (GstMssManifestStreamType streamtype)
{
switch (streamtype) {
case MSS_STREAM_TYPE_VIDEO:
return "video";
case MSS_STREAM_TYPE_AUDIO:
return "audio";
case MSS_STREAM_TYPE_UNKNOWN:
default:
return "unknown";
}
}
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