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134 lines
4.5 KiB
C
134 lines
4.5 KiB
C
/* GStreamer Wavpack parser
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* Copyright (C) 2012 Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
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* Copyright (C) 2012 Nokia Corporation. All rights reserved.
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* Contact: Stefan Kost <stefan.kost@nokia.com>
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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_WAVPACK_PARSE_H__
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#define __GST_WAVPACK_PARSE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbaseparse.h>
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G_BEGIN_DECLS
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#define GST_TYPE_WAVPACK_PARSE \
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(gst_wavpack_parse_get_type())
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#define GST_WAVPACK_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_WAVPACK_PARSE, GstWavpackParse))
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#define GST_WAVPACK_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_WAVPACK_PARSE, GstWavpackParseClass))
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#define GST_IS_WAVPACK_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_WAVPACK_PARSE))
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#define GST_IS_WAVPACK_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_WAVPACK_PARSE))
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#define ID_UNIQUE 0x3f
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#define ID_OPTIONAL_DATA 0x20
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#define ID_ODD_SIZE 0x40
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#define ID_LARGE 0x80
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#define ID_DUMMY 0x0
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#define ID_ENCODER_INFO 0x1
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#define ID_DECORR_TERMS 0x2
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#define ID_DECORR_WEIGHTS 0x3
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#define ID_DECORR_SAMPLES 0x4
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#define ID_ENTROPY_VARS 0x5
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#define ID_HYBRID_PROFILE 0x6
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#define ID_SHAPING_WEIGHTS 0x7
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#define ID_FLOAT_INFO 0x8
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#define ID_INT32_INFO 0x9
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#define ID_WV_BITSTREAM 0xa
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#define ID_WVC_BITSTREAM 0xb
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#define ID_WVX_BITSTREAM 0xc
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#define ID_CHANNEL_INFO 0xd
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#define ID_RIFF_HEADER (ID_OPTIONAL_DATA | 0x1)
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#define ID_RIFF_TRAILER (ID_OPTIONAL_DATA | 0x2)
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#define ID_REPLAY_GAIN (ID_OPTIONAL_DATA | 0x3)
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#define ID_CUESHEET (ID_OPTIONAL_DATA | 0x4)
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#define ID_CONFIG_BLOCK (ID_OPTIONAL_DATA | 0x5)
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#define ID_MD5_CHECKSUM (ID_OPTIONAL_DATA | 0x6)
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#define ID_SAMPLE_RATE (ID_OPTIONAL_DATA | 0x7)
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#define FLAG_FINAL_BLOCK (1 << 12)
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typedef struct {
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char ckID [4]; /* "wvpk" */
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guint32 ckSize; /* size of entire block (minus 8, of course) */
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guint16 version; /* 0x402 to 0x410 are currently valid for decode */
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guchar track_no; /* track number (0 if not used, like now) */
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guchar index_no; /* track sub-index (0 if not used, like now) */
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guint32 total_samples; /* total samples for entire file, but this is
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* only valid if block_index == 0 and a value of
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* -1 indicates unknown length */
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guint32 block_index; /* index of first sample in block relative to
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* beginning of file (normally this would start
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* at 0 for the first block) */
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guint32 block_samples; /* number of samples in this block (0 = no audio) */
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guint32 flags; /* various flags for id and decoding */
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guint32 crc; /* crc for actual decoded data */
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} WavpackHeader;
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typedef struct {
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gboolean correction;
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guint rate;
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guint width;
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guint channels;
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guint channel_mask;
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} WavpackInfo;
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typedef struct _GstWavpackParse GstWavpackParse;
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typedef struct _GstWavpackParseClass GstWavpackParseClass;
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/**
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* GstWavpackParse:
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*
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* The opaque GstWavpackParse object
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*/
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struct _GstWavpackParse {
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GstBaseParse baseparse;
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/*< private >*/
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gint sample_rate;
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gint channels;
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gint width;
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gint channel_mask;
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guint total_samples;
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WavpackHeader wph;
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WavpackInfo wpi;
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};
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/**
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* GstWavpackParseClass:
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* @parent_class: Element parent class.
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*
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* The opaque GstWavpackParseClass data structure.
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*/
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struct _GstWavpackParseClass {
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GstBaseParseClass baseparse_class;
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};
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GType gst_wavpack_parse_get_type (void);
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G_END_DECLS
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#endif /* __GST_WAVPACK_PARSE_H__ */
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