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/* GStreamer
* Copyright (C) 2005 Sebastien Moutte <sebastien@moutte.net>
*
* gstwaveformsink.h:
*
* 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_WAVEFORMSINK_H__
#define __GST_WAVEFORMSINK_H__
#include <gst/gst.h>
#include <gst/audio/gstaudiosink.h>
#include <windows.h>
#include <mmsystem.h>
#define WAVE_FORMAT_96M08 0x00001000 /* 96 kHz, Mono, 8-bit */
#define WAVE_FORMAT_96S08 0x00002000 /* 96 kHz, Stereo, 8-bit */
#define WAVE_FORMAT_96M16 0x00004000 /* 96 kHz, Mono, 16-bit */
#define WAVE_FORMAT_96S16 0x00008000 /* 96 kHz, Stereo, 16-bit */
#define ERROR_LENGTH MAXERRORLENGTH+50
#define BUFFER_COUNT 20
#define BUFFER_SIZE 8192
G_BEGIN_DECLS
#define GST_TYPE_WAVEFORM_SINK (gst_waveform_sink_get_type())
#define GST_WAVEFORM_SINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVEFORM_SINK,GstWaveFormSink))
#define GST_WAVEFORM_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVEFORM_SINK,GstWaveFormSinkClass))
#define GST_IS_WAVEFORM_SINK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVEFORM_SINK))
#define GST_IS_WAVEFORM_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVEFORM_SINK))
typedef struct _GstWaveFormSink GstWaveFormSink;
typedef struct _GstWaveFormSinkClass GstWaveFormSinkClass;
struct _GstWaveFormSink
{
/* parent object */
GstAudioSink sink;
/* supported caps */
GstCaps *cached_caps;
/* handle to the waveform-audio output device */
HWAVEOUT hwaveout;
/* table of buffer headers */
WAVEHDR *wave_buffers;
/* critical section protecting access to the number of free buffers */
CRITICAL_SECTION critic_wave;
/* number of free buffers available */
guint free_buffers_count;
/* current free buffer where you have to write incoming data */
guint write_buffer;
/* size of buffers streamed to the device */
guint buffer_size;
/* number of buffers streamed to the device */
guint buffer_count;
/* total of bytes in queue before they are written to the device */
guint bytes_in_queue;
/* bytes per sample from setcaps used to evaluate the number samples returned by delay */
guint bytes_per_sample;
/* wave form error string */
gchar error_string[ERROR_LENGTH];
};
struct _GstWaveFormSinkClass
{
GstAudioSinkClass parent_class;
};
GType gst_waveform_sink_get_type (void);
G_END_DECLS
#endif /* __GST_WAVEFORMSINK_H__ */
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