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audiodecoder: add some tag handling convenience help

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This commit is contained in:
Mark Nauwelaerts 2012-03-06 15:56:42 +01:00
parent 5a0fff76f3
commit 8a3f818dce
2 changed files with 40 additions and 0 deletions
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37
gst-libs/gst/audio/gstaudiodecoder.c
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@ -2585,3 +2585,40 @@ gst_audio_decoder_get_needs_format (GstAudioDecoder * dec)
return result; return result;
} }
/**
* gst_audio_decoder_merge_tags:
* @dec: a #GstAudioDecoder
* @tags: a #GstTagList to merge
* @mode: the #GstTagMergeMode to use
*
* Adds tags to so-called pending tags, which will be processed
* before pushing out data downstream.
*
* Note that this is provided for convenience, and the subclass is
* not required to use this and can still do tag handling on its own,
* although it should be aware that baseclass already takes care
* of the usual CODEC/AUDIO_CODEC tags.
*
* MT safe.
*
* Since: 0.10.37
*/
void
gst_audio_decoder_merge_tags (GstAudioDecoder * dec,
const GstTagList * tags, GstTagMergeMode mode)
{
GstTagList *otags;
g_return_if_fail (GST_IS_AUDIO_DECODER (dec));
g_return_if_fail (tags == NULL || GST_IS_TAG_LIST (tags));
GST_AUDIO_DECODER_STREAM_LOCK (dec);
if (tags)
GST_DEBUG_OBJECT (dec, "merging tags %" GST_PTR_FORMAT, tags);
otags = dec->priv->taglist;
dec->priv->taglist = gst_tag_list_merge (dec->priv->taglist, tags, mode);
if (otags)
gst_tag_list_free (otags);
GST_AUDIO_DECODER_STREAM_UNLOCK (dec);
}

3
gst-libs/gst/audio/gstaudiodecoder.h
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@ -305,6 +305,9 @@ void gst_audio_decoder_set_needs_format (GstAudioDecoder * dec,
gboolean gst_audio_decoder_get_needs_format (GstAudioDecoder * dec); gboolean gst_audio_decoder_get_needs_format (GstAudioDecoder * dec);
void gst_audio_decoder_merge_tags (GstAudioDecoder * dec,
const GstTagList * tags, GstTagMergeMode mode);
G_END_DECLS G_END_DECLS
#endif /* _GST_AUDIO_DECODER_H_ */ #endif /* _GST_AUDIO_DECODER_H_ */