mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 21:51:09 +00:00
919d3f2f7c
Original commit message from CVS: Add a parser for metadata (demux_metadata): Given the buffer containing the metadata, look through it and get the info out of it. (wav_new_chunk_callback): Change the if statement to a switch statement. Handle GST_RIFF_TAG_LIST by changing what the type of list it is and parsing out metadata if it is "INFO".
143 lines
4.2 KiB
C
143 lines
4.2 KiB
C
/* 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/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;
|
|
|
|
GstBuffer *buf;
|
|
|
|
GstCaps *metadata;
|
|
};
|
|
|
|
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__ */
|