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112 lines
3 KiB
C
112 lines
3 KiB
C
/* GStreamer
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*
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* uvch264_mjpg_demux: a demuxer for muxed stream in UVC H264 compliant MJPG
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*
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* Copyright (C) 2012 Cisco Systems, Inc.
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* Author: Youness Alaoui <youness.alaoui@collabora.co.uk>
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_UVC_H264_MJPG_DEMUX_H__
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#define __GST_UVC_H264_MJPG_DEMUX_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_UVC_H264_MJPG_DEMUX \
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(gst_uvc_h264_mjpg_demux_get_type())
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#define GST_UVC_H264_MJPG_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), \
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GST_TYPE_UVC_H264_MJPG_DEMUX, \
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GstUvcH264MjpgDemux))
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#define GST_UVC_H264_MJPG_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), \
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GST_TYPE_UVC_H264_MJPG_DEMUX, \
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GstUvcH264MjpgDemuxClass))
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#define GST_IS_UVC_H264_MJPG_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), \
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GST_TYPE_UVC_H264_MJPG_DEMUX))
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#define GST_IS_UVC_H264_MJPG_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), \
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GST_TYPE_UVC_H264_MJPG_DEMUX))
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typedef struct _GstUvcH264MjpgDemux GstUvcH264MjpgDemux;
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typedef struct _GstUvcH264MjpgDemuxClass GstUvcH264MjpgDemuxClass;
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typedef struct
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{
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guint32 dev_stc;
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guint32 dev_sof;
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GstClockTime host_ts;
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guint32 host_sof;
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} GstUvcH264ClockSample;
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typedef struct
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{
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guint16 version;
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guint16 header_len;
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guint32 type;
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guint16 width;
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guint16 height;
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guint32 frame_interval;
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guint16 delay;
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guint32 pts;
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} __attribute__ ((packed)) AuxiliaryStreamHeader;
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struct _GstUvcH264MjpgDemux {
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GstElement element;
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/* private */
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int device_fd;
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int num_clock_samples;
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GstUvcH264ClockSample *clock_samples;
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int last_sample;
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int num_samples;
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GstPad *sink_pad;
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GstPad *jpeg_pad;
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GstPad *h264_pad;
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GstPad *yuy2_pad;
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GstPad *nv12_pad;
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GstCaps *h264_caps;
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GstCaps *yuy2_caps;
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GstCaps *nv12_caps;
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guint16 h264_width;
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guint16 h264_height;
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guint16 yuy2_width;
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guint16 yuy2_height;
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guint16 nv12_width;
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guint16 nv12_height;
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/* input segment */
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GstSegment segment;
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GstClockTime last_pts;
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gboolean pts_reordered_warning;};
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struct _GstUvcH264MjpgDemuxClass {
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GstElementClass parent_class;
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};
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GType gst_uvc_h264_mjpg_demux_get_type (void);
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GST_ELEMENT_REGISTER_DECLARE (uvch264mjpgdemux);
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G_END_DECLS
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#endif /* __GST_UVC_H264_MJPG_DEMUX_H__ */
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