1 /* GStreamer Wavpack encoder plugin
2  * Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
3  *
4  * gstwavpackenc.h: Wavpack audio encoder
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_WAVPACK_ENC_H__
23 #define __GST_WAVPACK_ENC_H__
24 
25 #include <gst/gst.h>
26 #include <gst/audio/gstaudioencoder.h>
27 
28 #include <wavpack/wavpack.h>
29 
30 G_BEGIN_DECLS
31 #define GST_TYPE_WAVPACK_ENC \
32   (gst_wavpack_enc_get_type())
33 #define GST_WAVPACK_ENC(obj) \
34   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPACK_ENC,GstWavpackEnc))
35 #define GST_WAVPACK_ENC_CLASS(klass) \
36   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPACK_ENC,GstWavpackEnc))
37 #define GST_IS_WAVPACK_ENC(obj) \
38   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPACK_ENC))
39 #define GST_IS_WAVPACK_ENC_CLASS(klass) \
40   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPACK_ENC))
41 typedef struct _GstWavpackEnc GstWavpackEnc;
42 typedef struct _GstWavpackEncClass GstWavpackEncClass;
43 
44 typedef struct
45 {
46   gboolean correction;
47   GstWavpackEnc *wavpack_enc;
48   gboolean passthrough;
49 } GstWavpackEncWriteID;
50 
51 
52 struct _GstWavpackEnc
53 {
54   GstAudioEncoder element;
55 
56   /*< private > */
57   GstPad *wvcsrcpad;
58 
59   GstFlowReturn srcpad_last_return;
60   GstFlowReturn wvcsrcpad_last_return;
61 
62   WavpackConfig *wp_config;
63   WavpackContext *wp_context;
64 
65   gint samplerate;
66   gint channels;
67   gint channel_mask;
68   gint8 channel_mapping[8];
69   gboolean need_channel_remap;
70   gint depth;
71 
72   GstWavpackEncWriteID wv_id;
73   GstWavpackEncWriteID wvc_id;
74 
75   guint mode;
76   guint bitrate;
77   gdouble bps;
78   guint correction_mode;
79   gboolean md5;
80   GChecksum *md5_context;
81   guint extra_processing;
82   guint joint_stereo_mode;
83 
84   void *first_block;
85   int32_t first_block_size;
86 
87   GstBuffer *pending_buffer;
88   gint32 pending_offset;
89   GstEvent *pending_segment;
90 
91   GstClockTime timestamp_offset;
92   GstClockTime next_ts;
93 };
94 
95 struct _GstWavpackEncClass
96 {
97   GstAudioEncoderClass parent;
98 };
99 
100 GType gst_wavpack_enc_get_type (void);
101 
102 gboolean gst_wavpack_enc_plugin_init (GstPlugin * plugin);
103 
104 G_END_DECLS
105 #endif /* __GST_WAVPACK_ENC_H__ */
106