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99bb6f44ba
Blocking in change_state() is a recipe for disaster, even more so if we wait for another thread that also calls into various element API and could then lead to deadlocks on e.g. the state lock.
121 lines
4.2 KiB
C
121 lines
4.2 KiB
C
/* GStreamer Split Muxed File Source - Part reader
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* Copyright (C) 2014 Jan Schmidt <jan@centricular.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_SPLITMUX_PART_READER_H__
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#define __GST_SPLITMUX_PART_READER_H__
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#include <gst/gst.h>
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#include <gst/base/gstdataqueue.h>
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G_BEGIN_DECLS
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#define GST_TYPE_SPLITMUX_PART_READER \
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(gst_splitmux_part_reader_get_type())
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#define GST_SPLITMUX_PART_READER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SPLITMUX_PART_READER,GstSplitMuxSrc))
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#define GST_SPLITMUX_PART_READER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SPLITMUX_PART_READER,GstSplitMuxSrcClass))
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#define GST_IS_SPLITMUX_PART_READER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPLITMUX_PART_READER))
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#define GST_IS_SPLITMUX_PART_READER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SPLITMUX_PART_READER))
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typedef struct _GstSplitMuxPartReader GstSplitMuxPartReader;
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typedef struct _GstSplitMuxPartReaderClass GstSplitMuxPartReaderClass;
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typedef struct _SplitMuxSrcPad SplitMuxSrcPad;
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typedef struct _SplitMuxSrcPadClass SplitMuxSrcPadClass;
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typedef enum
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{
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PART_STATE_NULL,
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PART_STATE_PREPARING_COLLECT_STREAMS,
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PART_STATE_PREPARING_MEASURE_STREAMS,
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PART_STATE_PREPARING_RESET_FOR_READY,
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PART_STATE_READY,
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PART_STATE_FAILED,
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} GstSplitMuxPartState;
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typedef GstPad *(*GstSplitMuxPartReaderPadCb)(GstSplitMuxPartReader *reader, GstPad *src_pad, gpointer cb_data);
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struct _GstSplitMuxPartReader
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{
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GstPipeline parent;
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GstSplitMuxPartState prep_state;
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gchar *path;
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GstElement *src;
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GstElement *typefind;
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GstElement *demux;
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gboolean async_pending;
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gboolean active;
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gboolean running;
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gboolean prepared;
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gboolean flushing;
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gboolean no_more_pads;
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GstClockTime duration;
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GstClockTime start_offset;
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GList *pads;
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GCond inactive_cond;
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GMutex lock;
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GMutex type_lock;
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GstSplitMuxPartReaderPadCb get_pad_cb;
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gpointer cb_data;
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};
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struct _GstSplitMuxPartReaderClass
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{
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GstPipelineClass parent_class;
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void (*prepared) (GstSplitMuxPartReader *reader);
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void (*end_of_part) (GstSplitMuxPartReader *reader);
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};
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GType gst_splitmux_part_reader_get_type (void);
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void gst_splitmux_part_reader_set_callbacks (GstSplitMuxPartReader *reader,
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gpointer cb_data, GstSplitMuxPartReaderPadCb get_pad_cb);
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gboolean gst_splitmux_part_reader_prepare (GstSplitMuxPartReader *part);
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void gst_splitmux_part_reader_unprepare (GstSplitMuxPartReader *part);
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void gst_splitmux_part_reader_set_location (GstSplitMuxPartReader *reader,
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const gchar *path);
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gboolean gst_splitmux_part_is_eos (GstSplitMuxPartReader *reader);
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gboolean gst_splitmux_part_reader_activate (GstSplitMuxPartReader *part, GstSegment *seg, GstSeekFlags extra_flags);
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void gst_splitmux_part_reader_deactivate (GstSplitMuxPartReader *part);
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gboolean gst_splitmux_part_reader_is_active (GstSplitMuxPartReader *part);
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gboolean gst_splitmux_part_reader_src_query (GstSplitMuxPartReader *part, GstPad *src_pad, GstQuery * query);
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void gst_splitmux_part_reader_set_start_offset (GstSplitMuxPartReader *part, GstClockTime offset);
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GstClockTime gst_splitmux_part_reader_get_start_offset (GstSplitMuxPartReader *part);
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GstClockTime gst_splitmux_part_reader_get_end_offset (GstSplitMuxPartReader *part);
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GstClockTime gst_splitmux_part_reader_get_duration (GstSplitMuxPartReader * reader);
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GstPad *gst_splitmux_part_reader_lookup_pad (GstSplitMuxPartReader *reader, GstPad *target);
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GstFlowReturn gst_splitmux_part_reader_pop (GstSplitMuxPartReader *reader, GstPad *part_pad, GstDataQueueItem ** item);
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G_END_DECLS
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#endif
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