mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 01:30:38 +00:00
94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
/* GStreamer mplex (mjpegtools) wrapper
|
|
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
|
|
* (c) 2008 Mark Nauwelaerts <mnauw@users.sourceforge.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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
|
|
#include "gstmplex.hh"
|
|
#include "gstmplexibitstream.hh"
|
|
|
|
/*
|
|
* Class init/exit functions.
|
|
*/
|
|
|
|
GstMplexIBitStream::GstMplexIBitStream (GstMplexPad * _data, guint buf_size):
|
|
IBitStream ()
|
|
{
|
|
mpad = _data;
|
|
mplex = GST_MPLEX (GST_PAD_PARENT (mpad->pad));
|
|
eos = FALSE;
|
|
|
|
SetBufSize (buf_size);
|
|
eobs = false;
|
|
byteidx = 0;
|
|
}
|
|
|
|
/*
|
|
* Read data.
|
|
*/
|
|
|
|
size_t
|
|
GstMplexIBitStream::ReadStreamBytes (uint8_t * buf, size_t size =
|
|
BUFFER_SIZE)
|
|
{
|
|
gpointer data;
|
|
|
|
GST_MPLEX_MUTEX_LOCK (mplex);
|
|
|
|
GST_DEBUG_OBJECT (mplex, "needing %d bytes", (guint) size);
|
|
|
|
while (gst_adapter_available (mpad->adapter) < size
|
|
&& !mplex->eos && !mpad->eos) {
|
|
mpad->needed = size;
|
|
GST_MPLEX_SIGNAL (mplex, mpad);
|
|
GST_MPLEX_WAIT (mplex, mpad);
|
|
}
|
|
|
|
mpad->needed = 0;
|
|
size = MIN (size, gst_adapter_available (mpad->adapter));
|
|
if (size) {
|
|
data = gst_adapter_take (mpad->adapter, size);
|
|
memcpy (buf, data, size);
|
|
g_free (data);
|
|
}
|
|
|
|
GST_MPLEX_MUTEX_UNLOCK (mplex);
|
|
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* Are we at EOS?
|
|
*/
|
|
|
|
bool GstMplexIBitStream::EndOfStream (void)
|
|
{
|
|
return eos;
|
|
}
|
|
|
|
bool GstMplexIBitStream::ReadBuffer ()
|
|
{
|
|
return ReadIntoBuffer (BUFFER_SIZE);
|
|
}
|