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/* GStreamer mplex (mjpegtools) wrapper
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstmplexibitstream.hh: gstreamer/mplex input bitstream wrapper
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstmplexibitstream.hh"
/*
* Class init/exit functions.
*/
GstMplexIBitStream::GstMplexIBitStream (GstPad * _pad, guint buf_size):
IBitStream ()
{
guint8 *data;
pad = _pad;
bs = gst_bytestream_new (pad);
eos = FALSE;
streamname = g_strdup (gst_pad_get_name (_pad));
SetBufSize (buf_size);
eobs = false;
byteidx = 0;
/* we peek 1 byte (not even caring about the return value) so we
* are sure that we have data and thus capsnego must be completed
* when we return. */
gst_bytestream_peek_bytes (bs, &data, 1);
if (!ReadIntoBuffer () && buffered == 0) {
GST_ELEMENT_ERROR (gst_pad_get_parent (_pad), RESOURCE, READ, (NULL),
("Failed to read from input pad %s", gst_pad_get_name (pad)));
}
}
GstMplexIBitStream::~GstMplexIBitStream (void)
{
gst_bytestream_destroy (bs);
}
/*
* Read data.
*/
size_t GstMplexIBitStream::ReadStreamBytes (uint8_t * buf, size_t size)
{
guint8 *
data;
guint
read;
if (eos)
return 0;
if ((read = gst_bytestream_peek_bytes (bs, &data, size)) != size) {
GstEvent *
event;
guint
pending;
gst_bytestream_get_status (bs, &pending, &event);
if (event) {
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
eos = TRUE;
break;
default:
break;
}
gst_event_unref (event);
}
}
memcpy (buf, data, read);
gst_bytestream_flush_fast (bs, read);
return read;
}
/*
* Are we at EOS?
*/
bool GstMplexIBitStream::EndOfStream (void)
{
return eos;
}
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