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138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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_WAVPARSE_H__
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#define __GST_WAVPARSE_H__
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#include <config.h>
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#include <gst/gst.h>
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#include <gstriff.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_WAVPARSE \
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(gst_wavparse_get_type())
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#define GST_WAVPARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPARSE,GstWavParse))
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#define GST_WAVPARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPARSE,GstWavParse))
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#define GST_IS_WAVPARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPARSE))
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#define GST_IS_WAVPARSE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPARSE))
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#define GST_WAVPARSE_UNKNOWN 0 /* initialized state */
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#define GST_WAVPARSE_CHUNK_FMT 1 /* searching for fmt */
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#define GST_WAVPARSE_CHUNK_DATA 2 /* searching for data */
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#define GST_WAVPARSE_DATA 3 /* in data region */
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#define GST_WAVPARSE_OTHER 4 /* in unknown region */
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typedef struct _GstWavParse GstWavParse;
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typedef struct _GstWavParseClass GstWavParseClass;
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struct _GstWavParse {
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GstElement element;
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/* pads */
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GstPad *sinkpad,*srcpad;
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/* WAVE decoding state */
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gint state;
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/* RIFF decoding state */
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GstRiff *riff;
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gulong riff_nextlikely;
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/* expected length of audio */
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gulong size;
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/* format of audio, see defines below */
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gint format;
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/* useful audio data */
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gint bps;
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gint rate;
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gint channels;
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gint width;
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gint64 offset;
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gint64 datastart;
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gboolean need_discont;
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};
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struct _GstWavParseClass {
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GstElementClass parent_class;
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};
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GType gst_wavparse_get_type(void);
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typedef struct _GstWavParseFormat GstWavParseFormat;
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struct _GstWavParseFormat {
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gint16 wFormatTag;
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guint16 wChannels;
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guint32 dwSamplesPerSec;
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guint32 dwAvgBytesPerSec;
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guint16 wBlockAlign;
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guint16 wBitsPerSample;
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};
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/**** from public Microsoft RIFF docs ******/
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#define GST_RIFF_WAVE_FORMAT_UNKNOWN (0x0000)
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#define GST_RIFF_WAVE_FORMAT_PCM (0x0001)
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#define GST_RIFF_WAVE_FORMAT_ADPCM (0x0002)
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#define GST_RIFF_WAVE_FORMAT_IBM_CVSD (0x0005)
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#define GST_RIFF_WAVE_FORMAT_ALAW (0x0006)
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#define GST_RIFF_WAVE_FORMAT_MULAW (0x0007)
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#define GST_RIFF_WAVE_FORMAT_OKI_ADPCM (0x0010)
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#define GST_RIFF_WAVE_FORMAT_DVI_ADPCM (0x0011)
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#define GST_RIFF_WAVE_FORMAT_DIGISTD (0x0015)
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#define GST_RIFF_WAVE_FORMAT_DIGIFIX (0x0016)
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#define GST_RIFF_WAVE_FORMAT_YAMAHA_ADPCM (0x0020)
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#define GST_RIFF_WAVE_FORMAT_DSP_TRUESPEECH (0x0022)
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#define GST_RIFF_WAVE_FORMAT_GSM610 (0x0031)
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#define GST_RIFF_WAVE_FORMAT_MSN (0x0032)
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#define GST_RIFF_WAVE_FORMAT_MPEGL12 (0x0050)
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#define GST_RIFF_WAVE_FORMAT_MPEGL3 (0x0055)
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#define GST_RIFF_IBM_FORMAT_MULAW (0x0101)
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#define GST_RIFF_IBM_FORMAT_ALAW (0x0102)
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#define GST_RIFF_IBM_FORMAT_ADPCM (0x0103)
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#define GST_RIFF_WAVE_FORMAT_DIVX_WMAV1 (0x0160)
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#define GST_RIFF_WAVE_FORMAT_DIVX_WMAV2 (0x0161)
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#define GST_RIFF_WAVE_FORMAT_WMAV9 (0x0162)
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#define GST_RIFF_WAVE_FORMAT_VORBIS1 (0x674f)
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#define GST_RIFF_WAVE_FORMAT_VORBIS2 (0x6750)
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#define GST_RIFF_WAVE_FORMAT_VORBIS3 (0x6751)
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#define GST_RIFF_WAVE_FORMAT_VORBIS1PLUS (0x676f)
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#define GST_RIFF_WAVE_FORMAT_VORBIS2PLUS (0x6770)
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#define GST_RIFF_WAVE_FORMAT_VORBIS3PLUS (0x6771)
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_WAVPARSE_H__ */
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