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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_WAVPARSE_H__
#define __GST_WAVPARSE_H__
#include <config.h>
#include <gst/gst.h>
#include <gst-libs/gst/riff/riff.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_WAVPARSE \
(gst_wavparse_get_type())
#define GST_WAVPARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPARSE,GstWavParse))
#define GST_WAVPARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPARSE,GstWavParse))
#define GST_IS_WAVPARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPARSE))
#define GST_IS_WAVPARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPARSE))
#define GST_WAVPARSE_UNKNOWN 0 /* initialized state */
#define GST_WAVPARSE_CHUNK_FMT 1 /* searching for fmt */
#define GST_WAVPARSE_CHUNK_DATA 2 /* searching for data */
#define GST_WAVPARSE_DATA 3 /* in data region */
#define GST_WAVPARSE_OTHER 4 /* in unknown region */
typedef struct _GstWavParse GstWavParse;
typedef struct _GstWavParseClass GstWavParseClass;
struct _GstWavParse {
GstElement element;
/* pads */
GstPad *sinkpad,*srcpad;
/* WAVE decoding state */
gint state;
/* RIFF decoding state */
GstRiff *riff;
gulong riff_nextlikely;
/* expected length of audio */
gulong size;
/* format of audio, see defines below */
gint format;
/* useful audio data */
gint bps;
gint rate;
gint channels;
gint width;
gint64 offset;
gint64 datastart;
gboolean need_discont;
};
struct _GstWavParseClass {
GstElementClass parent_class;
};
GType gst_wavparse_get_type(void);
typedef struct _GstWavParseFormat GstWavParseFormat;
struct _GstWavParseFormat {
gint16 wFormatTag;
guint16 wChannels;
guint32 dwSamplesPerSec;
guint32 dwAvgBytesPerSec;
guint16 wBlockAlign;
guint16 wBitsPerSample;
};
/**** from public Microsoft RIFF docs ******/
#define GST_RIFF_WAVE_FORMAT_UNKNOWN (0x0000)
#define GST_RIFF_WAVE_FORMAT_PCM (0x0001)
#define GST_RIFF_WAVE_FORMAT_ADPCM (0x0002)
#define GST_RIFF_WAVE_FORMAT_IBM_CVSD (0x0005)
#define GST_RIFF_WAVE_FORMAT_ALAW (0x0006)
#define GST_RIFF_WAVE_FORMAT_MULAW (0x0007)
#define GST_RIFF_WAVE_FORMAT_OKI_ADPCM (0x0010)
#define GST_RIFF_WAVE_FORMAT_DVI_ADPCM (0x0011)
#define GST_RIFF_WAVE_FORMAT_DIGISTD (0x0015)
#define GST_RIFF_WAVE_FORMAT_DIGIFIX (0x0016)
#define GST_RIFF_WAVE_FORMAT_YAMAHA_ADPCM (0x0020)
#define GST_RIFF_WAVE_FORMAT_DSP_TRUESPEECH (0x0022)
#define GST_RIFF_WAVE_FORMAT_GSM610 (0x0031)
#define GST_RIFF_WAVE_FORMAT_MSN (0x0032)
#define GST_RIFF_WAVE_FORMAT_MPEGL12 (0x0050)
#define GST_RIFF_WAVE_FORMAT_MPEGL3 (0x0055)
#define GST_RIFF_IBM_FORMAT_MULAW (0x0101)
#define GST_RIFF_IBM_FORMAT_ALAW (0x0102)
#define GST_RIFF_IBM_FORMAT_ADPCM (0x0103)
#define GST_RIFF_WAVE_FORMAT_DIVX_WMAV1 (0x0160)
#define GST_RIFF_WAVE_FORMAT_DIVX_WMAV2 (0x0161)
#define GST_RIFF_WAVE_FORMAT_WMAV9 (0x0162)
#define GST_RIFF_WAVE_FORMAT_VORBIS1 (0x674f)
#define GST_RIFF_WAVE_FORMAT_VORBIS2 (0x6750)
#define GST_RIFF_WAVE_FORMAT_VORBIS3 (0x6751)
#define GST_RIFF_WAVE_FORMAT_VORBIS1PLUS (0x676f)
#define GST_RIFF_WAVE_FORMAT_VORBIS2PLUS (0x6770)
#define GST_RIFF_WAVE_FORMAT_VORBIS3PLUS (0x6771)
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_WAVPARSE_H__ */
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