/**
* gst_pb_utils_add_codec_description_to_tag_list:
* @taglist: a #GstTagList
* @codec_tag: a GStreamer codec tag such as #GST_TAG_AUDIO_CODEC,
* #GST_TAG_VIDEO_CODEC or #GST_TAG_CODEC
* @caps: the (fixed) #GstCaps for which a codec tag should be added.
*
* Adds a codec tag describing the format specified by @caps to @taglist.
*
* Returns: TRUE if a codec tag was added, FALSE otherwise.
*/
gboolean
gst_pb_utils_add_codec_description_to_tag_list (GstTagList * taglist,
const gchar * codec_tag, const GstCaps * caps)
{
const FormatInfo *info;
gchar *desc;
g_return_val_if_fail (taglist != NULL, FALSE);
g_return_val_if_fail (GST_IS_TAG_LIST (taglist), FALSE);
g_return_val_if_fail (codec_tag != NULL, FALSE);
g_return_val_if_fail (gst_tag_exists (codec_tag), FALSE);
g_return_val_if_fail (gst_tag_get_type (codec_tag) == G_TYPE_STRING, FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
info = find_format_info (caps);
if (info == NULL)
return FALSE;
desc = format_info_get_desc (info, caps);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, codec_tag, desc, NULL);
g_free (desc);
return TRUE;
}
/**
* gst_pb_utils_add_codec_description_to_tag_list:
* @taglist: a #GstTagList
* @codec_tag: (allow-none): a GStreamer codec tag such as #GST_TAG_AUDIO_CODEC,
* #GST_TAG_VIDEO_CODEC or #GST_TAG_CODEC. If none is specified,
* the function will attempt to detect the appropriate category.
* @caps: the (fixed) #GstCaps for which a codec tag should be added.
*
* Adds a codec tag describing the format specified by @caps to @taglist.
*
* Returns: TRUE if a codec tag was added, FALSE otherwise.
*/
gboolean
gst_pb_utils_add_codec_description_to_tag_list (GstTagList * taglist,
const gchar * codec_tag, const GstCaps * caps)
{
const FormatInfo *info;
gchar *desc;
g_return_val_if_fail (taglist != NULL, FALSE);
g_return_val_if_fail (GST_IS_TAG_LIST (taglist), FALSE);
g_return_val_if_fail (codec_tag == NULL || (gst_tag_exists (codec_tag)
&& gst_tag_get_type (codec_tag) == G_TYPE_STRING), FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
info = find_format_info (caps);
if (info == NULL)
return FALSE;
/* Attempt to find tag classification */
if (codec_tag == NULL) {
if (info->flags & FLAG_CONTAINER)
codec_tag = GST_TAG_CONTAINER_FORMAT;
else if (info->flags & FLAG_AUDIO)
codec_tag = GST_TAG_AUDIO_CODEC;
else if (info->flags & FLAG_VIDEO)
codec_tag = GST_TAG_VIDEO_CODEC;
else if (info->flags & FLAG_SUB)
codec_tag = GST_TAG_SUBTITLE_CODEC;
else
codec_tag = GST_TAG_CODEC;
}
desc = format_info_get_desc (info, caps);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, codec_tag, desc, NULL);
g_free (desc);
return TRUE;
}
static gboolean
flv_metadata_value_handler(FlvScriptDataReader* reader,
gchar* value_name, gint value_type, void* param)
{
gdouble double_value;
guint8 boolean_value;
gchar* string_value;
gboolean result = TRUE;
FlvMetadata* metadata = (FlvMetadata*)param;
switch (value_type) {
case FLV_SCRIPT_DATA_TYPE_DOUBLE:
result = flv_script_data_read_double(reader, &double_value);
if (!result)
break;
if (strcmp(value_name, "duration") == 0) {
metadata->duration = (GstClockTime)(double_value * GST_SECOND);
gst_tag_list_add (metadata->tag_list, GST_TAG_MERGE_REPLACE,
GST_TAG_DURATION, metadata->duration, NULL);
} else if (strcmp(value_name, "filesize") == 0) {
metadata->file_size = (gint)double_value;
} else if (strcmp(value_name, "videocodecid") == 0) {
metadata->video_codec_id = (gint)double_value;
} else if (strcmp(value_name, "videodatarate") == 0) {
metadata->video_data_rate = double_value;
} else if (strcmp(value_name, "width") == 0) {
metadata->width = (gint)double_value;
} else if (strcmp(value_name, "height") == 0) {
metadata->height = (gint)double_value;
} else if (strcmp(value_name, "AspectRatioX") == 0) {
metadata->par_x = (gint)double_value;
} else if (strcmp(value_name, "AspectRatioY") == 0) {
metadata->par_y = (gint)double_value;
} else if (strcmp(value_name, "framerate") == 0) {
metadata->framerate = double_value;
} else if (strcmp(value_name, "audiocodecid") == 0) {
metadata->audio_codec_id = (gint)double_value;
} else if (strcmp(value_name, "audiosamplesize") == 0) {
metadata->audio_sample_size = (gint)double_value;
}
break;
case FLV_SCRIPT_DATA_TYPE_BOOL:
result = flv_script_data_read_ui8(reader, &boolean_value);
if (!result)
break;
if (strcmp(value_name, "canSeekToEnd") == 0) {
metadata->can_seek_to_end = boolean_value;
} else if (strcmp(value_name, "stereo") == 0) {
metadata->is_stereo = boolean_value;
}
break;
case FLV_SCRIPT_DATA_TYPE_STRING:
case FLV_SCRIPT_DATA_TYPE_LONG_STRING:
result = flv_script_data_read_string(reader, &string_value, value_type == FLV_SCRIPT_DATA_TYPE_LONG_STRING);
if (!result)
break;
// Register the tag if needed so it shows up
if (!gst_tag_exists(value_name)) {
gst_tag_register(value_name, GST_TAG_FLAG_META, G_TYPE_STRING, value_name, "FLV Metadata Tag", NULL);
}
gst_tag_list_add(metadata->tag_list, GST_TAG_MERGE_REPLACE, value_name, string_value, NULL);
g_free(string_value);
break;
case FLV_SCRIPT_DATA_TYPE_OBJECT:
// Only read the keyframe metadata once
if ((strcmp(value_name, "keyframes") == 0) && (metadata->keyframes == NULL)) {
result &= flv_script_data_read_object(reader, flv_metadata_keyframe_handler, param);
} else {
result &= flv_script_data_read_object(reader, flv_metadata_skip_handler, param);
}
break;
case FLV_SCRIPT_DATA_TYPE_MOVIE_CLIP:
// Per AMF version 0: "This type is not supported and is reserved for future use."
result = FALSE;
break;
case FLV_SCRIPT_DATA_TYPE_NULL:
case FLV_SCRIPT_DATA_TYPE_UNDEFINED:
// Nothing follows
break;
case FLV_SCRIPT_DATA_TYPE_REFERENCE:
// U16, two byte index follows
// this is just an index to some other object in this script tag, we can safely ignore this
reader->position += 2;
break;
case FLV_SCRIPT_DATA_TYPE_ECMA:
result &= flv_script_data_read_ecma(reader, flv_metadata_skip_handler, param);
break;
case FLV_SCRIPT_DATA_TYPE_TERMINATOR:
/* Just return true for ECMA terminator */
break;
case FLV_SCRIPT_DATA_TYPE_STRICT:
result &= flv_script_data_read_strict_array(reader, flv_metadata_skip_handler, param);
break;
case FLV_SCRIPT_DATA_TYPE_DATE:
// Skip date value (64 bits milliseconds + 16 bits time zone == 80 bits == 10 bytes)
reader->position += 10;
break;
default:
/* Non-handled type */
result = FALSE;
break;
}
return result;
}
/*
* Class method: exists?(tag)
* tag: the name of the tag.
*
* Checks if the given tag is already registered.
*
* Returns: true if the tag is registered, false otherwise.
*/
static VALUE
rg_s_exists_p (G_GNUC_UNUSED VALUE self, VALUE tag)
{
return CBOOL2RVAL (gst_tag_exists (RVAL2CSTR (tag)));
}
/*
* Class method: exists?(tag)
* tag: the name of the tag.
*
* Checks if the given tag is already registered.
*
* Returns: true if the tag is registered, false otherwise.
*/
static VALUE
rb_gst_tag_exists (VALUE self, VALUE tag)
{
return CBOOL2RVAL (gst_tag_exists (RVAL2CSTR (tag)));
}
