/* GStreamer Split Muxed File Source - Part reader
 * Copyright (C) 2014 Jan Schmidt <jan@centricular.com>
 *
 * 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.
 */
#ifndef __GST_SPLITMUX_PART_READER_H__
#define __GST_SPLITMUX_PART_READER_H__

#include <gst/gst.h>
#include <gst/base/gstdataqueue.h>

G_BEGIN_DECLS

#define GST_TYPE_SPLITMUX_PART_READER \
  (gst_splitmux_part_reader_get_type())
#define GST_SPLITMUX_PART_READER(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SPLITMUX_PART_READER,GstSplitMuxSrc))
#define GST_SPLITMUX_PART_READER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SPLITMUX_PART_READER,GstSplitMuxSrcClass))
#define GST_IS_SPLITMUX_PART_READER(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPLITMUX_PART_READER))
#define GST_IS_SPLITMUX_PART_READER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SPLITMUX_PART_READER))

typedef struct _GstSplitMuxPartReader GstSplitMuxPartReader;
typedef struct _GstSplitMuxPartReaderClass GstSplitMuxPartReaderClass;
typedef struct _GstSplitMuxPartReaderInfo GstSplitMuxPartReaderInfo;
typedef struct _SplitMuxSrcPad SplitMuxSrcPad;
typedef struct _SplitMuxSrcPadClass SplitMuxSrcPadClass;

typedef enum
{
  PART_STATE_NULL,
  PART_STATE_PREPARING_COLLECT_STREAMS,
  PART_STATE_PREPARING_MEASURE_STREAMS,
  PART_STATE_PREPARING_RESET_FOR_READY,
  PART_STATE_READY,
  PART_STATE_FAILED,
} GstSplitMuxPartState;

typedef GstPad *(*GstSplitMuxPartReaderPadCb)(GstSplitMuxPartReader *reader, GstPad *src_pad, gpointer cb_data);
typedef void (*GstSplitMuxPartReaderMeasuredCb)(GstSplitMuxPartReader *reader, const gchar *filename, GstClockTime offset, GstClockTime duration, gpointer cb_data);
typedef void (*GstSplitMuxPartReaderLoadedCb)(GstSplitMuxPartReader *reader, gpointer cb_data);

struct _GstSplitMuxPartReaderInfo
{
  GstClockTime duration;
  GstClockTime start_offset;
};

struct _GstSplitMuxPartReader
{
  GstBin parent;

  GstSplitMuxPartState prep_state;
  gboolean need_duration_measuring;

  gchar *path;

  GstElement *src;
  GstElement *typefind;
  GstElement *demux;

  gboolean async_pending;

  gboolean created;
  gboolean loaded;
  gboolean playing;

  gboolean prepared;
  gboolean flushing;
  gboolean no_more_pads;

  GstSplitMuxPartReaderInfo info;

  GstClockTime smallest_ts_offset;
  GstClockTime ts_offset;
  GstClockTime end_offset;

  GList *pads;

  GCond inactive_cond;
  GMutex lock;
  GMutex type_lock;
  GMutex msg_lock;

  GstSplitMuxPartReaderPadCb get_pad_cb;
  GstSplitMuxPartReaderMeasuredCb measured_cb;
  GstSplitMuxPartReaderLoadedCb loaded_cb;
  gpointer cb_data;
};

struct _GstSplitMuxPartReaderClass
{
  GstBinClass parent_class;

  void (*prepared)  (GstSplitMuxPartReader *reader);
  void (*end_of_part) (GstSplitMuxPartReader *reader);
};

GType gst_splitmux_part_reader_get_type (void);

gboolean gst_splitmux_part_reader_is_loaded (GstSplitMuxPartReader *part);
gboolean gst_splitmux_part_reader_is_playing (GstSplitMuxPartReader *part);

void gst_splitmux_part_reader_set_callbacks (GstSplitMuxPartReader *reader,
    gpointer cb_data, GstSplitMuxPartReaderPadCb get_pad_cb, GstSplitMuxPartReaderMeasuredCb measured_cb,
    GstSplitMuxPartReaderLoadedCb loaded_cb);

gboolean gst_splitmux_part_reader_prepare (GstSplitMuxPartReader *part);
void gst_splitmux_part_reader_unprepare (GstSplitMuxPartReader *part);
void gst_splitmux_part_reader_set_location (GstSplitMuxPartReader *reader,
    const gchar *path);
gboolean gst_splitmux_part_reader_needs_measuring (GstSplitMuxPartReader *reader);
gboolean gst_splitmux_part_is_eos (GstSplitMuxPartReader *reader);

gboolean gst_splitmux_part_reader_activate (GstSplitMuxPartReader *part, GstSegment *seg, GstSeekFlags extra_flags);
void gst_splitmux_part_reader_deactivate (GstSplitMuxPartReader *part);

void gst_splitmux_part_reader_stop (GstSplitMuxPartReader *part);

gboolean gst_splitmux_part_reader_src_query (GstSplitMuxPartReader *part, GstPad *src_pad, GstQuery * query);
void gst_splitmux_part_reader_set_start_offset (GstSplitMuxPartReader *part, GstClockTime time_offset, GstClockTime ts_offset);
void gst_splitmux_part_reader_set_duration (GstSplitMuxPartReader *part, GstClockTime duration);
GstClockTime gst_splitmux_part_reader_get_start_offset (GstSplitMuxPartReader *part);
GstClockTime gst_splitmux_part_reader_get_end_offset (GstSplitMuxPartReader *part);
GstClockTime gst_splitmux_part_reader_get_duration (GstSplitMuxPartReader * reader);

GstPad *gst_splitmux_part_reader_lookup_pad (GstSplitMuxPartReader *reader, GstPad *target);
GstFlowReturn gst_splitmux_part_reader_pop (GstSplitMuxPartReader *reader, GstPad *part_pad, GstDataQueueItem ** item);

G_END_DECLS

#endif