1 /* GStreamer Wavpack plugin
2 * Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
4 * gstwavpackstreamreader.c: stream reader used for decoding
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
26 #include "gstwavpackstreamreader.h"
29 gst_wavpack_stream_reader_read_bytes (void *id, void *data, int32_t bcount)
31 read_id *rid = (read_id *) id;
32 uint32_t left = rid->length - rid->position;
33 uint32_t to_read = MIN (left, bcount);
36 g_memmove (data, rid->buffer + rid->position, to_read);
37 rid->position += to_read;
45 gst_wavpack_stream_reader_get_pos (void *id)
47 return ((read_id *) id)->position;
51 gst_wavpack_stream_reader_set_pos_abs (void *id, uint32_t pos)
57 gst_wavpack_stream_reader_set_pos_rel (void *id, int32_t delta, int mode)
63 gst_wavpack_stream_reader_push_back_byte (void *id, int c)
65 read_id *rid = (read_id *) id;
68 if (rid->position < 0)
74 gst_wavpack_stream_reader_get_length (void *id)
76 return ((read_id *) id)->length;
80 gst_wavpack_stream_reader_can_seek (void *id)
86 gst_wavpack_stream_reader_write_bytes (void *id, void *data, int32_t bcount)
92 gst_wavpack_stream_reader_new ()
94 WavpackStreamReader *stream_reader =
95 (WavpackStreamReader *) g_malloc0 (sizeof (WavpackStreamReader));
96 stream_reader->read_bytes = gst_wavpack_stream_reader_read_bytes;
97 stream_reader->get_pos = gst_wavpack_stream_reader_get_pos;
98 stream_reader->set_pos_abs = gst_wavpack_stream_reader_set_pos_abs;
99 stream_reader->set_pos_rel = gst_wavpack_stream_reader_set_pos_rel;
100 stream_reader->push_back_byte = gst_wavpack_stream_reader_push_back_byte;
101 stream_reader->get_length = gst_wavpack_stream_reader_get_length;
102 stream_reader->can_seek = gst_wavpack_stream_reader_can_seek;
103 stream_reader->write_bytes = gst_wavpack_stream_reader_write_bytes;
105 return stream_reader;