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asfdemux: Store/Handle global metadata (not specific to one stream).

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This allows us to store (and handle) PAR information which might be stored there.
This commit is contained in:
Edward Hervey 2009-06-26 10:40:39 +02:00
parent 6aa267cfc8
commit 1cc2eed416
2 changed files with 88 additions and 56 deletions
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64
gst/asfdemux/gstasfdemux.c
View file

@ -187,6 +187,11 @@ gst_asf_demux_reset (GstASFDemux * demux)
gst_caps_unref (demux->metadata);
demux->metadata = NULL;
}
if (demux->global_metadata) {
gst_structure_free (demux->global_metadata);
demux->global_metadata = NULL;
}
demux->state = GST_ASF_DEMUX_STATE_HEADER;
g_free (demux->objpath);
demux->objpath = NULL;
@ -1878,9 +1883,20 @@ gst_asf_demux_add_video_stream (GstASFDemux * demux,
s = gst_asf_demux_get_metadata_for_stream (demux, id);
if (gst_structure_get_int (s, "AspectRatioX", &ax) &&
gst_structure_get_int (s, "AspectRatioY", &ay)) {
/* only copy sane values */
if (ax > 0 && ay > 0) {
gst_structure_get_int (s, "AspectRatioY", &ay) && (ax > 0 && ay > 0)) {
gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
ax, ay, NULL);
} else {
guint ax, ay;
/* retry with the global metadata */
GST_DEBUG ("Retrying with global metadata %" GST_PTR_FORMAT,
demux->global_metadata);
s = demux->global_metadata;
if (gst_structure_get_uint (s, "AspectRatioX", &ax) &&
gst_structure_get_uint (s, "AspectRatioY", &ay)) {
GST_DEBUG ("ax:%d, ay:%d", ax, ay);
if (ax > 0 && ay > 0)
gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
ax, ay, NULL);
}
@ -2081,8 +2097,7 @@ not_enough_data:
}
static const gchar *
gst_asf_demux_get_gst_tag_from_tag_name (const gchar * name_utf16le,
gsize name_len)
gst_asf_demux_get_gst_tag_from_tag_name (const gchar * name_utf8)
{
const struct
{
@ -2098,14 +2113,9 @@ gst_asf_demux_get_gst_tag_from_tag_name (const gchar * name_utf16le,
"WM/Year", GST_TAG_DATE}
/* { "WM/Composer", GST_TAG_COMPOSER } */
};
gchar *name_utf8;
gsize in, out;
gsize out = strlen (name_utf8);
guint i;
/* convert name to UTF-8 */
name_utf8 = g_convert (name_utf16le, name_len, "UTF-8", "UTF-16LE", &in,
&out, NULL);
if (name_utf8 == NULL) {
GST_WARNING ("Failed to convert name to UTF8, skipping");
return NULL;
@ -2114,13 +2124,10 @@ gst_asf_demux_get_gst_tag_from_tag_name (const gchar * name_utf16le,
for (i = 0; i < G_N_ELEMENTS (tags); ++i) {
if (strncmp (tags[i].asf_name, name_utf8, out) == 0) {
GST_LOG ("map tagname '%s' -> '%s'", name_utf8, tags[i].gst_name);
g_free (name_utf8);
return tags[i].gst_name;
}
}
GST_LOG ("unhandled tagname '%s'", name_utf8);
g_free (name_utf8);
return NULL;
}
@ -2237,6 +2244,7 @@ gst_asf_demux_process_ext_content_desc (GstASFDemux * demux, guint8 * data,
GValue tag_value = { 0, };
gsize in, out;
gchar *name;
gchar *name_utf8 = NULL;
gchar *value;
/* Descriptor */
@ -2256,8 +2264,16 @@ gst_asf_demux_process_ext_content_desc (GstASFDemux * demux, guint8 * data,
goto not_enough_data;
}
gst_tag_name = gst_asf_demux_get_gst_tag_from_tag_name (name, name_len);
if (gst_tag_name != NULL) {
name_utf8 =
g_convert (name, name_len, "UTF-8", "UTF-16LE", &in, &out, NULL);
GST_DEBUG ("Found tag/metadata %s", name_utf8);
gst_tag_name = gst_asf_demux_get_gst_tag_from_tag_name (name_utf8);
GST_DEBUG ("gst_tag_name %s", gst_tag_name);
if (name_utf8 != NULL) {
switch (datatype) {
case ASF_DEMUX_DATA_TYPE_UTF16LE_STRING:{
gchar *value_utf8;
@ -2265,10 +2281,13 @@ gst_asf_demux_process_ext_content_desc (GstASFDemux * demux, guint8 * data,
value_utf8 = g_convert (value, value_len, "UTF-8", "UTF-16LE",
&in, &out, NULL);
GST_DEBUG ("string value %s", value_utf8);
/* get rid of tags with empty value */
if (value_utf8 != NULL && *value_utf8 != '\0') {
value_utf8[out] = '\0';
if (gst_tag_name != NULL) {
if (strcmp (gst_tag_name, GST_TAG_DATE) == 0) {
guint year = atoi (value_utf8);
@ -2309,6 +2328,12 @@ gst_asf_demux_process_ext_content_desc (GstASFDemux * demux, guint8 * data,
g_value_unset (&from_val);
}
}
} else {
/* metadata ! */
GST_DEBUG ("Setting metadata");
g_value_init (&tag_value, G_TYPE_STRING);
g_value_set_string (&tag_value, value_utf8);
}
} else if (value_utf8 == NULL) {
GST_WARNING ("Failed to convert string value to UTF8, skipping");
} else {
@ -2339,10 +2364,16 @@ gst_asf_demux_process_ext_content_desc (GstASFDemux * demux, guint8 * data,
}
if (G_IS_VALUE (&tag_value)) {
if (gst_tag_name) {
gst_tag_list_add_values (taglist, GST_TAG_MERGE_APPEND,
gst_tag_name, &tag_value, NULL);
g_value_unset (&tag_value);
} else {
GST_DEBUG ("Setting global metadata %s", name_utf8);
gst_structure_set_value (demux->global_metadata, name_utf8,
&tag_value);
}
}
}
@ -3575,6 +3606,7 @@ gst_asf_demux_change_state (GstElement * element, GstStateChange transition)
demux->segment_running = FALSE;
demux->adapter = gst_adapter_new ();
demux->metadata = gst_caps_new_empty ();
demux->global_metadata = gst_structure_empty_new ("metadata");
demux->data_size = 0;
demux->data_offset = 0;
demux->index_offset = 0;

2
gst/asfdemux/gstasfdemux.h
View file

@ -136,7 +136,7 @@ struct _GstASFDemux {
GstCaps *metadata; /* metadata, for delayed parsing; one
* structure ('stream-N') per stream */
GstStructure *global_metadata; /* metadata which isn't specific to one stream */
GSList *ext_stream_props; /* for delayed processing (buffers) */
GSList *mut_ex_streams; /* mutually exclusive streams */