1 /* GStreamer 2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> 3 * Copyright (C) <2006> Nokia Corporation, Stefan Kost <stefan.kost@nokia.com>. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public 16 * License along with this library; if not, write to the 17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 22 #ifndef __GST_WAVPARSE_H__ 23 #define __GST_WAVPARSE_H__ 24 25 26 #include <gst/gst.h> 27 #include "gst/riff/riff-ids.h" 28 #include "gst/riff/riff-read.h" 29 #include <gst/base/gstadapter.h> 30 31 G_BEGIN_DECLS 32 33 #define GST_TYPE_WAVPARSE \ 34 (gst_wavparse_get_type()) 35 #define GST_WAVPARSE(obj) \ 36 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPARSE,GstWavParse)) 37 #define GST_WAVPARSE_CLASS(klass) \ 38 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPARSE,GstWavParseClass)) 39 #define GST_IS_WAVPARSE(obj) \ 40 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPARSE)) 41 #define GST_IS_WAVPARSE_CLASS(klass) \ 42 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPARSE)) 43 44 typedef enum { 45 GST_WAVPARSE_START, 46 GST_WAVPARSE_HEADER, 47 GST_WAVPARSE_DATA 48 } GstWavParseState; 49 50 typedef struct _GstWavParse GstWavParse; 51 typedef struct _GstWavParseClass GstWavParseClass; 52 53 /** 54 * GstWavParse: 55 * 56 * Opaque data structure. 57 */ 58 struct _GstWavParse { 59 GstElement parent; 60 61 /* pads */ 62 GstPad *sinkpad,*srcpad; 63 64 /* for delayed source pad creation for when 65 * we have the first chunk of data and know 66 * the format for sure */ 67 GstCaps *caps; 68 GstTagList *tags; 69 GstToc *toc; 70 GList *cues; 71 GList *labls; 72 GList *notes; 73 GstEvent *start_segment; 74 75 /* WAVE decoding state */ 76 GstWavParseState state; 77 gboolean abort_buffering; 78 79 /* format of audio, see defines below */ 80 gint format; 81 82 /* useful audio data */ 83 guint16 depth; 84 guint32 rate; 85 guint16 channels; 86 guint16 blockalign; 87 guint16 width; 88 guint32 av_bps; 89 guint64 fact; 90 91 /* real bps used or 0 when no bitrate is known */ 92 guint32 bps; 93 gboolean vbr; 94 95 guint bytes_per_sample; 96 guint max_buf_size; 97 98 /* position in data part */ 99 guint64 offset; 100 guint64 end_offset; 101 guint64 dataleft; 102 /* offset/length of data part */ 103 guint64 datastart; 104 guint64 datasize; 105 /* duration in time */ 106 guint64 duration; 107 108 /* pending seek */ 109 GstEvent *seek_event; 110 111 /* For streaming */ 112 GstAdapter *adapter; 113 gboolean got_fmt; 114 gboolean streaming; 115 116 /* configured segment, start/stop expressed in time or bytes */ 117 GstSegment segment; 118 119 /* for late pad configuration */ 120 gboolean first; 121 /* discont after seek */ 122 gboolean discont; 123 124 gboolean ignore_length; 125 126 /* Size of the data as written in the chunk size */ 127 guint32 chunk_size; 128 }; 129 130 struct _GstWavParseClass { 131 GstElementClass parent_class; 132 }; 133 134 GType gst_wavparse_get_type(void); 135 136 GST_ELEMENT_REGISTER_DECLARE (wavparse); 137 138 G_END_DECLS 139 140 #endif /* __GST_WAVPARSE_H__ */ 141