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173 lines
5.3 KiB
C
173 lines
5.3 KiB
C
/* GStreamer
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* Copyright (C) <2006> Renato Araujo Oliveira Filho <renato.filho@indt.org.br>
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* Rosfran Borges <rosfran.borges@indt.org.br>
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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_NUV_DEMUX_H__
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#define __GST_NUV_DEMUX_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_NUV_DEMUX \
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(gst_nuv_demux_get_type ())
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#define GST_NUV_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_NUV_DEMUX, GstNuvDemux))
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#define GST_NUV_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_NUV_DEMUX, GstNuvDemuxClass))
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#define GST_IS_NUV_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_NUV_DEMUX))
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#define GST_IS_NUV_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_NUV_DEMUX))
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/* */
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typedef struct
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{
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gchar id[12]; /* "NuppelVideo\0" or "MythTVVideo\0" */
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gchar version[5]; /* "x.xx\0" */
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gint i_width;
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gint i_height;
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gint i_width_desired;
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gint i_height_desired;
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gchar i_mode; /* P progressive, I interlaced */
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gdouble d_aspect; /* 1.0 squared pixel */
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gdouble d_fps;
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gint i_video_blocks; /* 0 no video, -1 unknown */
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gint i_audio_blocks;
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gint i_text_blocks;
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gint i_keyframe_distance;
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} nuv_header;
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typedef struct
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{
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gchar i_type; /* A: audio, V: video, S: sync; T: test
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R: Seekpoint (string:RTjjjjjjjj)
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D: Extra data for codec */
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gchar i_compression; /* V: 0 uncompressed
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1 RTJpeg
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2 RTJpeg+lzo
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N black frame
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L copy last
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A: 0 uncompressed (44100 1-bits, 2ch)
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1 lzo
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2 layer 2
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3 layer 3
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F flac
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S shorten
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N null frame loudless
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L copy last
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S: B audio and vdeo sync point
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A audio sync info (timecode == effective
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dsp frequency*100)
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V next video sync (timecode == next video
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frame num)
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S audio,video,text correlation */
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gchar i_keyframe; /* 0 keyframe, else no no key frame */
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guint8 i_filters; /* 0x01: gauss 5 pixel (8,2,2,2,2)/16
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0x02: gauss 5 pixel (8,1,1,1,1)/12
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0x04: cartoon filter */
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gint i_timecode; /* ms */
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gint i_length; /* V,A,T: length of following data
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S: length of packet correl */
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} nuv_frame_header;
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/* FIXME Not sure of this one */
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typedef struct
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{
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gint i_version;
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guint32 i_video_fcc;
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guint32 i_audio_fcc;
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gint i_audio_sample_rate;
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gint i_audio_bits_per_sample;
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gint i_audio_channels;
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gint i_audio_compression_ratio;
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gint i_audio_quality;
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gint i_rtjpeg_quality;
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gint i_rtjpeg_luma_filter;
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gint i_rtjpeg_chroma_filter;
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gint i_lavc_bitrate;
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gint i_lavc_qmin;
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gint i_lavc_qmax;
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gint i_lavc_maxqdiff;
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gint64 i_seekable_offset;
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gint64 i_keyframe_adjust_offset;
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} nuv_extended_header;
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typedef enum {
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GST_NUV_DEMUX_START,
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GST_NUV_DEMUX_HEADER_DATA,
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GST_NUV_DEMUX_EXTRA_DATA,
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GST_NUV_DEMUX_MPEG_DATA,
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GST_NUV_DEMUX_EXTEND_HEADER,
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GST_NUV_DEMUX_EXTEND_HEADER_DATA,
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GST_NUV_DEMUX_FRAME_HEADER,
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GST_NUV_DEMUX_MOVI,
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GST_NUV_DEMUX_INVALID_DATA
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} GstNuvDemuxState;
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typedef struct _GstNuvDemux {
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GstElement parent;
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guint mode;
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GstAdapter *adapter;
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guint64 video_offset;
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guint64 audio_offset;
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/* pads */
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GstPad *sinkpad;
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GstPad *src_video_pad;
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GstPad *src_audio_pad;
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gboolean first_video;
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gboolean first_audio;
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/* NUV decoding state */
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GstNuvDemuxState state;
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guint64 offset;
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/* Mpeg ExtraData */
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guint64 mpeg_data_size;
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GstBuffer *mpeg_buffer;
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nuv_header *h;
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nuv_extended_header *eh;
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nuv_frame_header *fh;
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} GstNuvDemux;
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typedef struct _GstNuvDemuxClass {
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GstElementClass parent_class;
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} GstNuvDemuxClass;
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GType gst_nuv_demux_get_type (void);
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G_END_DECLS
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#endif /* __GST_NUV_DEMUX_H__ */
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