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7505b7a55c
Add some audio metadata to describe a downmix matrix. Add metadata to media type document.
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* GStreamer
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* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include "gstaudiometa.h"
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static void
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gst_audio_downmix_meta_copy (GstBuffer * dest, GstMeta * meta,
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GstBuffer * buffer, gsize offset, gsize size)
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{
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GstAudioDownmixMeta *dmeta, *smeta;
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smeta = (GstAudioDownmixMeta *) meta;
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dmeta = gst_buffer_add_audio_downmix_meta (dest);
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memcpy (dmeta, smeta, sizeof (GstAudioDownmixMeta));
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}
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const GstMetaInfo *
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gst_audio_downmix_meta_get_info (void)
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{
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static const GstMetaInfo *audio_downmix_meta_info = NULL;
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if (audio_downmix_meta_info == NULL) {
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audio_downmix_meta_info =
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gst_meta_register (GST_AUDIO_DOWNMIX_META_API, "GstAudioDownmixMeta",
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sizeof (GstAudioDownmixMeta), (GstMetaInitFunction) NULL,
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(GstMetaFreeFunction) NULL, gst_audio_downmix_meta_copy,
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(GstMetaTransformFunction) NULL);
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}
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return audio_downmix_meta_info;
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}
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