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6f966febce
This holds all newsegement and most other events till there is enough data to set srcpad caps, so that the downstream link is properly negotiated before data starts flowing. https://bugzilla.gnome.org/show_bug.cgi?id=635205
154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
/* GStreamer h264 parser
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* Copyright (C) 2005 Michal Benes <michal.benes@itonis.tv>
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*
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* gsth264parse.h:
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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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#ifndef __GST_H264_PARSE_H__
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#define __GST_H264_PARSE_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_H264PARSE \
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(gst_h264_parse_get_type())
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#define GST_H264PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_H264PARSE,GstH264Parse))
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#define GST_H264PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_H264PARSE,GstH264ParseClass))
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#define GST_IS_H264PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_H264PARSE))
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#define GST_IS_H264PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_H264PARSE))
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typedef struct _GstH264Parse GstH264Parse;
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typedef struct _GstH264ParseClass GstH264ParseClass;
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typedef struct _GstNalList GstNalList;
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typedef struct _GstH264Sps GstH264Sps;
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typedef struct _GstH264Pps GstH264Pps;
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#define MAX_SPS_COUNT 32
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#define MAX_PPS_COUNT 32
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#define CLOCK_BASE 9LL
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#define CLOCK_FREQ (CLOCK_BASE * 10000)
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#define MPEGTIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
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GST_MSECOND/10, CLOCK_BASE))
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#define GSTTIME_TO_MPEGTIME(time) (gst_util_uint64_scale ((time), \
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CLOCK_BASE, GST_MSECOND/10))
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struct _GstH264Parse
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{
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GstElement element;
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GstPad *sinkpad;
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GstPad *srcpad;
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gboolean split_packetized;
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gboolean merge;
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guint nal_length_size;
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guint format;
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guint interval;
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GstClockTime last_report;
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GstSegment segment;
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gboolean packetized;
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gboolean discont;
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gint width, height;
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gint fps_num, fps_den;
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/* gather/decode queues for reverse playback */
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GList *gather;
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GstBuffer *prev;
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GstNalList *decode;
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gint decode_len;
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gboolean have_sps;
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gboolean have_pps;
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gboolean have_i_frame;
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GstAdapter *adapter;
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/* SPS: sequential parameter set */
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GstH264Sps *sps_buffers[MAX_SPS_COUNT];
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GstH264Sps *sps; /* Current SPS */
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/* PPS: sequential parameter set */
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GstH264Pps *pps_buffers[MAX_PPS_COUNT];
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GstH264Pps *pps; /* Current PPS */
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/* slice header */
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guint8 first_mb_in_slice;
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guint8 slice_type;
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guint8 pps_id;
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guint32 frame_num;
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gboolean field_pic_flag;
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gboolean bottom_field_flag;
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/* SEI: supplemental enhancement messages */
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/* buffering period */
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guint32 initial_cpb_removal_delay[32];
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/* picture timing */
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guint32 sei_cpb_removal_delay;
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guint32 sei_dpb_output_delay;
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guint8 sei_pic_struct;
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guint8 sei_ct_type;
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/* And more... */
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/* cached timestamps */
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GstClockTime dts;
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GstClockTime last_outbuf_dts;
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GstClockTime ts_trn_nb; /* dts of last buffering period */
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GstClockTime cur_duration; /* duration of the current access unit */
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/* for debug purpose */
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guint32 frame_cnt;
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/* NALU AU */
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GstAdapter *picture_adapter;
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gboolean picture_start;
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gint idr_offset;
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/* codec data NALUs to be inserted into stream */
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GSList *codec_nals;
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/* SPS and PPS NALUs collected from stream to form codec_data in caps */
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GstBuffer *sps_nals[MAX_SPS_COUNT];
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GstBuffer *pps_nals[MAX_PPS_COUNT];
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GstCaps *src_caps;
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GstEvent *pending_segment;
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GList *pending_events;
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};
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struct _GstH264ParseClass
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{
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GstElementClass parent_class;
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};
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GType gst_h264_parse_get_type (void);
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G_END_DECLS
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#endif /* __GST_H264_PARSE_H__ */
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