1 /* GStreamer 2 * Copyright (C) 2005 Sebastien Moutte <sebastien@moutte.net> 3 * 4 * gstwaveformsink.h: 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public 17 * License along with this library; if not, write to the 18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 #ifndef __GST_WAVEFORMSINK_H__ 23 #define __GST_WAVEFORMSINK_H__ 24 25 #include <gst/gst.h> 26 #include <gst/audio/audio.h> 27 #include <gst/audio/gstaudiosink.h> 28 29 #include <windows.h> 30 #include <mmsystem.h> 31 32 #ifndef WAVE_FORMAT_96M08 33 #define WAVE_FORMAT_96M08 0x00001000 /* 96 kHz, Mono, 8-bit */ 34 #endif 35 36 #ifndef WAVE_FORMAT_96S08 37 #define WAVE_FORMAT_96S08 0x00002000 /* 96 kHz, Stereo, 8-bit */ 38 #endif 39 40 #ifndef WAVE_FORMAT_96M16 41 #define WAVE_FORMAT_96M16 0x00004000 /* 96 kHz, Mono, 16-bit */ 42 #endif 43 44 #ifndef WAVE_FORMAT_96S16 45 #define WAVE_FORMAT_96S16 0x00008000 /* 96 kHz, Stereo, 16-bit */ 46 #endif 47 48 #define ERROR_LENGTH MAXERRORLENGTH+50 49 #define BUFFER_COUNT 20 50 #define BUFFER_SIZE 8192 51 52 G_BEGIN_DECLS 53 #define GST_TYPE_WAVEFORM_SINK (gst_waveform_sink_get_type()) 54 #define GST_WAVEFORM_SINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVEFORM_SINK,GstWaveFormSink)) 55 #define GST_WAVEFORM_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVEFORM_SINK,GstWaveFormSinkClass)) 56 #define GST_IS_WAVEFORM_SINK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVEFORM_SINK)) 57 #define GST_IS_WAVEFORM_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVEFORM_SINK)) 58 typedef struct _GstWaveFormSink GstWaveFormSink; 59 typedef struct _GstWaveFormSinkClass GstWaveFormSinkClass; 60 61 struct _GstWaveFormSink 62 { 63 /* parent object */ 64 GstAudioSink sink; 65 66 /* supported caps */ 67 GstCaps *cached_caps; 68 69 /* handle to the waveform-audio output device */ 70 HWAVEOUT hwaveout; 71 72 /* table of buffer headers */ 73 WAVEHDR *wave_buffers; 74 75 /* critical section protecting access to the number of free buffers */ 76 CRITICAL_SECTION critic_wave; 77 78 /* number of free buffers available */ 79 guint free_buffers_count; 80 81 /* current free buffer where you have to write incoming data */ 82 guint write_buffer; 83 84 /* size of buffers streamed to the device */ 85 guint buffer_size; 86 87 /* number of buffers streamed to the device */ 88 guint buffer_count; 89 90 /* total of bytes in queue before they are written to the device */ 91 guint bytes_in_queue; 92 93 /* bytes per sample from setcaps used to evaluate the number samples returned by delay */ 94 guint bytes_per_sample; 95 96 /* wave form error string */ 97 gchar error_string[ERROR_LENGTH]; 98 }; 99 100 struct _GstWaveFormSinkClass 101 { 102 GstAudioSinkClass parent_class; 103 }; 104 105 GType gst_waveform_sink_get_type (void); 106 107 G_END_DECLS 108 #endif /* __GST_WAVEFORMSINK_H__ */ 109