1 /* GStreamer AIFF parser 2 * Copyright (C) <2008> Pioneers of the Inevitable <songbird@songbirdnest.com> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public 15 * License along with this library; if not, write to the 16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 21 #ifndef __GST_AIFF_PARSE_H__ 22 #define __GST_AIFF_PARSE_H__ 23 24 25 #include <gst/gst.h> 26 #include <gst/base/gstadapter.h> 27 28 G_BEGIN_DECLS 29 30 #define GST_TYPE_AIFF_PARSE \ 31 (gst_aiff_parse_get_type()) 32 #define GST_AIFF_PARSE(obj) \ 33 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AIFF_PARSE,GstAiffParse)) 34 #define GST_AIFF_PARSE_CLASS(klass) \ 35 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AIFF_PARSE,GstAiffParseClass)) 36 #define GST_IS_AIFF_PARSE(obj) \ 37 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AIFF_PARSE)) 38 #define GST_IS_AIFF_PARSE_CLASS(klass) \ 39 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AIFF_PARSE)) 40 41 typedef enum { 42 AIFF_PARSE_START, 43 AIFF_PARSE_HEADER, 44 AIFF_PARSE_DATA 45 } GstAiffParseState; 46 47 typedef struct _GstAiffParse GstAiffParse; 48 typedef struct _GstAiffParseClass GstAiffParseClass; 49 50 /** 51 * GstAiffParse: 52 * 53 * Opaque data structure. 54 */ 55 struct _GstAiffParse { 56 GstElement parent; 57 58 /*< private >*/ 59 GstPad *sinkpad; 60 GstPad *srcpad; 61 62 GstEvent *close_segment; 63 GstEvent *start_segment; 64 65 /* AIFF decoding state */ 66 GstAiffParseState state; 67 68 /* format of audio, see defines below */ 69 gint format; 70 71 gboolean is_aifc; 72 73 /* useful audio data */ 74 guint32 rate; 75 guint16 channels; 76 guint16 width; 77 guint16 depth; 78 guint32 endianness; 79 gboolean floating_point; 80 81 /* real bytes per second used or 0 when no bitrate is known */ 82 guint32 bps; 83 84 guint bytes_per_sample; 85 guint max_buf_size; 86 87 guint32 total_frames; 88 89 guint32 ssnd_offset; 90 guint32 ssnd_blocksize; 91 92 /* position in data part */ 93 guint64 offset; 94 guint64 end_offset; 95 guint64 dataleft; 96 /* offset/length of data part */ 97 guint64 datastart; 98 guint64 datasize; 99 /* duration in time */ 100 guint64 duration; 101 102 /* pending seek */ 103 GstEvent *seek_event; 104 105 /* For streaming */ 106 GstAdapter *adapter; 107 gboolean got_comm; 108 gboolean streaming; 109 110 /* configured segment, start/stop expressed in time */ 111 GstSegment segment; 112 gboolean segment_running; 113 114 /* discont after seek */ 115 gboolean discont; 116 117 /* tags */ 118 GstTagList *tags; 119 }; 120 121 struct _GstAiffParseClass { 122 GstElementClass parent_class; 123 }; 124 125 GType gst_aiff_parse_get_type(void); 126 127 G_END_DECLS 128 129 #endif /* __GST_AIFF_PARSE_H__ */ 130