/* GStreamer

 * Copyright (C) <2006> Renato Araujo Oliveira Filho <renato.filho@indt.org.br>

 *                      Rosfran Borges <rosfran.borges@indt.org.br>

 *

 * 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., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#ifndef __GST_NUV_DEMUX_H__

#define __GST_NUV_DEMUX_H__

#include <gst/gst.h>

#include <gst/base/gstadapter.h>

G_BEGIN_DECLS

#define GST_TYPE_NUV_DEMUX \

  (gst_nuv_demux_get_type ())

#define GST_NUV_DEMUX(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_NUV_DEMUX, GstNuvDemux))

#define GST_NUV_DEMUX_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_NUV_DEMUX, GstNuvDemuxClass))

#define GST_IS_NUV_DEMUX(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_NUV_DEMUX))

#define GST_IS_NUV_DEMUX_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_NUV_DEMUX))

#define DEMUX_INDEX_SIZE_MAX (100000)

/* Indexes (timecodes/offsets) conversion structures */

typedef struct

{

    gint64 i_time;

    gint64 i_offset;

} nuv_demux_index_entry;

typedef struct

{

    gint i_idx;

    gint i_idx_max;

    nuv_demux_index_entry idx[DEMUX_INDEX_SIZE_MAX];

} nuv_demux_index;

/* */

typedef struct

{

    gchar id[12];       /* "NuppelVideo\0" or "MythTVVideo\0" */

    gchar version[5];    /* "x.xx\0" */

    gint  i_width;

    gint  i_height;

    gint  i_width_desired;

    gint  i_height_desired;

    gchar i_mode;            /* P progressive, I interlaced */

    gdouble  d_aspect;       /* 1.0 squared pixel */

    gdouble  d_fps;

    gint     i_video_blocks; /* 0 no video, -1 unknown */

    gint     i_audio_blocks;

    gint     i_text_blocks;

    gint     i_keyframe_distance;

} nuv_header;

typedef struct

{

    gchar i_type;        /* A: audio, V: video, S: sync; T: test

                           R: Seekpoint (string:RTjjjjjjjj)

                           D: Extra data for codec */

    gchar i_compression; /* V: 0 uncompressed

                              1 RTJpeg

                              2 RTJpeg+lzo

                              N black frame

                              L copy last

                           A: 0 uncompressed (44100 1-bits, 2ch)

                              1 lzo

                              2 layer 2

                              3 layer 3

                              F flac

                              S shorten

                              N null frame loudless

                              L copy last

                            S: B audio and vdeo sync point

                               A audio sync info (timecode == effective

                                    dsp frequency*100)

                               V next video sync (timecode == next video

                                    frame num)

                               S audio,video,text correlation */

    gchar i_keyframe;    /* 0 keyframe, else no no key frame */

    guint8 i_filters;  /* 0x01: gauss 5 pixel (8,2,2,2,2)/16

                           0x02: gauss 5 pixel (8,1,1,1,1)/12

                           0x04: cartoon filter */

    gint32 i_timecode;     /* ms */

    gint i_length;       /* V,A,T: length of following data

                           S: length of packet correl */

} nuv_frame_header;

/* FIXME Not sure of this one */

typedef struct

{

    gint             i_version;

    guint32		     i_video_fcc;

    guint32		     i_audio_fcc;

    gint             i_audio_sample_rate;

    gint             i_audio_bits_per_sample;

    gint             i_audio_channels;

    gint             i_audio_compression_ratio;

    gint             i_audio_quality;

    gint             i_rtjpeg_quality;

    gint             i_rtjpeg_luma_filter;

    gint             i_rtjpeg_chroma_filter;

    gint             i_lavc_bitrate;

    gint             i_lavc_qmin;

    gint             i_lavc_qmax;

    gint             i_lavc_maxqdiff;

    gint64         	 i_seekable_offset;

    gint64           i_keyframe_adjust_offset;

} nuv_extended_header;

typedef enum {

  GST_NUV_DEMUX_START,

  GST_NUV_DEMUX_HEADER_DATA,

  GST_NUV_DEMUX_EXTRA_DATA,

  GST_NUV_DEMUX_MPEG_DATA,

  GST_NUV_DEMUX_EXTEND_HEADER,

  GST_NUV_DEMUX_EXTEND_HEADER_DATA,

  GST_NUV_DEMUX_FRAME_HEADER,

  GST_NUV_DEMUX_MOVI,

  GST_NUV_DEMUX_INVALID_DATA

} GstNuvDemuxState;

typedef struct _GstNuvDemux {

  GstElement     parent;

  guint         mode;

  GstAdapter    *adapter; 

  /* pads */

  GstPad        *sinkpad;

  GstPad        *src_video_pad;  

  GstPad        *src_audio_pad;

  /* NUV decoding state */

  GstNuvDemuxState state;

  guint64        offset;

  guint          last_time;

  /* Mpeg ExtraData */

  guint64       mpeg_data_size;

  GstBuffer     *mpeg_buffer;

  nuv_header *h;

  nuv_extended_header *eh;

  nuv_frame_header *fh;

  /* index */

  nuv_demux_index *index_entries;

  guint          index_size;

  guint64        index_offset;

  guint          current_entry;

  /* FIXME: change these fields to private struct */

  /* first data buffer received, should sent new_segment */

  gboolean      new_audio_segment;

  gboolean      new_video_segment;

} GstNuvDemux;

typedef struct _GstNuvDemuxClass {

  GstElementClass parent_class;

} GstNuvDemuxClass;

GType           gst_nuv_demux_get_type          (void);

G_END_DECLS

#endif /* __GST_NUV_DEMUX_H__ */