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Add xingmux and id3v2mux to the pipeline when using lamemp3enc to transcode to MP3

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This commit is contained in:
David Sansome 2010-11-20 23:46:30 +00:00
parent 3e7108e9cf
commit 32b3e59f46
1 changed files with 27 additions and 1 deletions
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28
src/transcoder/transcoder.cpp
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@ -142,7 +142,33 @@ GstElement* Transcoder::CreateElementForMimeType(const QString& element_type,
const SuitableElement& best = suitable_elements_.last();
LogLine(QString("Using '%1' (rank %2)").arg(best.name_).arg(best.rank_));
return CreateElement(best.name_, bin);
if (best.name_ == "lamemp3enc") {
// Special case: we need to add xingmux and id3v2mux to the pipeline when
// using lamemp3enc because it doesn't write the VBR or ID3v2 headers itself.
LogLine("Adding xingmux and id3v2mux to the pipeline");
GstElement* mp3bin = gst_bin_new("mp3bin");
gst_bin_add(GST_BIN(bin), mp3bin);
GstElement* lame = CreateElement("lamemp3enc", mp3bin);
GstElement* xing = CreateElement("xingmux", mp3bin);
GstElement* id3v2 = CreateElement("id3v2mux", mp3bin);
gst_element_link_many(lame, xing, id3v2, NULL);
GstPad* pad = gst_element_get_static_pad(lame, "sink");
gst_element_add_pad(mp3bin, gst_ghost_pad_new("sink", pad));
gst_object_unref(GST_OBJECT(pad));
pad = gst_element_get_static_pad(id3v2, "src");
gst_element_add_pad(mp3bin, gst_ghost_pad_new("src", pad));
gst_object_unref(GST_OBJECT(pad));
return mp3bin;
} else {
return CreateElement(best.name_, bin);
}
}