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119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
/*
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* GStreamer
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* Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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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 "metadataparseutil.h"
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#include <string.h>
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void
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metadataparse_util_tag_list_add_chunk (GstTagList * taglist,
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GstTagMergeMode mode, const gchar * name, GstAdapter * adapter)
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{
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GstBuffer *buf;
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guint size;
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if (adapter && (size = gst_adapter_available (adapter))) {
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buf = gst_buffer_new_and_alloc (size);
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gst_adapter_copy (adapter, GST_BUFFER_DATA (buf), 0, size);
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gst_tag_list_add (taglist, mode, name, buf, NULL);
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gst_buffer_unref (buf);
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}
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}
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MetadataParsingReturn
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metadataparse_util_hold_chunk (guint32 * read, guint8 ** buf,
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guint32 * bufsize, guint8 ** next_start,
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guint32 * next_size, GstAdapter ** adapter)
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{
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int ret;
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if (*read > *bufsize) {
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*next_start = *buf;
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*next_size = *read;
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ret = META_PARSING_NEED_MORE_DATA;
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} else {
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GstBuffer *gst_buf;
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if (NULL == *adapter) {
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*adapter = gst_adapter_new ();
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}
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gst_buf = gst_buffer_new_and_alloc (*read);
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memcpy (GST_BUFFER_DATA (gst_buf), *buf, *read);
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gst_adapter_push (*adapter, gst_buf);
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*next_start = *buf + *read;
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*buf += *read;
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*bufsize -= *read;
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*read = 0;
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ret = META_PARSING_DONE;
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}
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return ret;
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}
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MetadataParsingReturn
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metadataparse_util_jump_chunk (guint32 * read, guint8 ** buf,
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guint32 * bufsize, guint8 ** next_start, guint32 * next_size)
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{
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int ret;
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if (*read > *bufsize) {
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*read -= *bufsize;
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*next_size = 2;
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*next_start = *buf + *bufsize + *read;
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*read = 0;
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*bufsize = 0;
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ret = META_PARSING_NEED_MORE_DATA;
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} else {
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*next_start = *buf + *read;
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*buf += *read;
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*bufsize -= *read;
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*read = 0;
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ret = META_PARSING_DONE;
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}
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return ret;
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}
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