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