1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
/* GStreamer
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 Nokia Corporation
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef _GST_DISCOVERER_H_
#define _GST_DISCOVERER_H_
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_DISCOVERER_STREAM_INFO \
(gst_discoverer_stream_info_get_type ())
#define GST_DISCOVERER_STREAM_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_STREAM_INFO, GstDiscovererStreamInfo))
#define GST_IS_DISCOVERER_STREAM_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_STREAM_INFO))
typedef struct _GstDiscovererStreamInfo GstDiscovererStreamInfo;
typedef GObjectClass GstDiscovererStreamInfoClass;
GType gst_discoverer_stream_info_get_type (void);
/**
* GstDiscovererStreamInfo:
*
* Base structure for information concerning a media stream. Depending on the
* stream type, one can find more media-specific information in
* #GstDiscovererAudioInfo, #GstDiscovererVideoInfo, and
* #GstDiscovererContainerInfo.
*
* The #GstDiscovererStreamInfo represents the topology of the stream. Siblings
* can be iterated over with gst_discoverer_stream_info_get_next() and
* gst_discoverer_stream_info_get_previous(). Children (sub-streams) of a
* stream can be accessed using the #GstDiscovererContainerInfo API.
*
* As a simple example, if you run #GstDiscoverer on an AVI file with one audio
* and one video stream, you will get a #GstDiscovererContainerInfo
* corresponding to the AVI container, which in turn will have a
* #GstDiscovererAudioInfo sub-stream and a #GstDiscovererVideoInfo sub-stream
* for the audio and video streams respectively.
*/
#define gst_discoverer_stream_info_ref(info) ((GstDiscovererStreamInfo*) g_object_ref((GObject*) info))
#define gst_discoverer_stream_info_unref(info) (g_object_unref((GObject*) info))
GstDiscovererStreamInfo* gst_discoverer_stream_info_get_previous(GstDiscovererStreamInfo* info);
GstDiscovererStreamInfo* gst_discoverer_stream_info_get_next(GstDiscovererStreamInfo* info);
GstCaps* gst_discoverer_stream_info_get_caps(GstDiscovererStreamInfo* info);
const GstTagList* gst_discoverer_stream_info_get_tags(GstDiscovererStreamInfo* info);
const GstToc* gst_discoverer_stream_info_get_toc(GstDiscovererStreamInfo* info);
const gchar* gst_discoverer_stream_info_get_stream_id(GstDiscovererStreamInfo* info);
const GstStructure* gst_discoverer_stream_info_get_misc(GstDiscovererStreamInfo* info);
const gchar * gst_discoverer_stream_info_get_stream_type_nick(GstDiscovererStreamInfo* info);
/**
* GstDiscovererContainerInfo:
*
* #GstDiscovererStreamInfo specific to container streams.
*/
#define GST_TYPE_DISCOVERER_CONTAINER_INFO \
(gst_discoverer_container_info_get_type ())
#define GST_DISCOVERER_CONTAINER_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_CONTAINER_INFO, GstDiscovererContainerInfo))
#define GST_IS_DISCOVERER_CONTAINER_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_CONTAINER_INFO))
typedef struct _GstDiscovererContainerInfo GstDiscovererContainerInfo;
typedef GObjectClass GstDiscovererContainerInfoClass;
GType gst_discoverer_container_info_get_type (void);
GList *gst_discoverer_container_info_get_streams(GstDiscovererContainerInfo *info);
/**
* GstDiscovererAudioInfo:
*
* #GstDiscovererStreamInfo specific to audio streams.
*/
#define GST_TYPE_DISCOVERER_AUDIO_INFO \
(gst_discoverer_audio_info_get_type ())
#define GST_DISCOVERER_AUDIO_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_AUDIO_INFO, GstDiscovererAudioInfo))
#define GST_IS_DISCOVERER_AUDIO_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_AUDIO_INFO))
typedef struct _GstDiscovererAudioInfo GstDiscovererAudioInfo;
typedef GObjectClass GstDiscovererAudioInfoClass;
GType gst_discoverer_audio_info_get_type (void);
guint gst_discoverer_audio_info_get_channels(const GstDiscovererAudioInfo* info);
guint gst_discoverer_audio_info_get_sample_rate(const GstDiscovererAudioInfo* info);
guint gst_discoverer_audio_info_get_depth(const GstDiscovererAudioInfo* info);
guint gst_discoverer_audio_info_get_bitrate(const GstDiscovererAudioInfo* info);
guint gst_discoverer_audio_info_get_max_bitrate(const GstDiscovererAudioInfo* info);
const gchar * gst_discoverer_audio_info_get_language(const GstDiscovererAudioInfo* info);
/**
* GstDiscovererVideoInfo:
*
* #GstDiscovererStreamInfo specific to video streams (this includes images).
*/
#define GST_TYPE_DISCOVERER_VIDEO_INFO \
(gst_discoverer_video_info_get_type ())
#define GST_DISCOVERER_VIDEO_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_VIDEO_INFO, GstDiscovererVideoInfo))
#define GST_IS_DISCOVERER_VIDEO_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_VIDEO_INFO))
typedef struct _GstDiscovererVideoInfo GstDiscovererVideoInfo;
typedef GObjectClass GstDiscovererVideoInfoClass;
GType gst_discoverer_video_info_get_type (void);
guint gst_discoverer_video_info_get_width(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_height(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_depth(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_framerate_num(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_framerate_denom(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_par_num(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_par_denom(const GstDiscovererVideoInfo* info);
gboolean gst_discoverer_video_info_is_interlaced(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_bitrate(const GstDiscovererVideoInfo* info);
guint gst_discoverer_video_info_get_max_bitrate(const GstDiscovererVideoInfo* info);
gboolean gst_discoverer_video_info_is_image(const GstDiscovererVideoInfo* info);
/**
* GstDiscovererSubtitleInfo:
*
* #GstDiscovererStreamInfo specific to subtitle streams (this includes text and
* image based ones).
*/
#define GST_TYPE_DISCOVERER_SUBTITLE_INFO \
(gst_discoverer_subtitle_info_get_type ())
#define GST_DISCOVERER_SUBTITLE_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_SUBTITLE_INFO, GstDiscovererSubtitleInfo))
#define GST_IS_DISCOVERER_SUBTITLE_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_SUBTITLE_INFO))
typedef struct _GstDiscovererSubtitleInfo GstDiscovererSubtitleInfo;
typedef GObjectClass GstDiscovererSubtitleInfoClass;
GType gst_discoverer_subtitle_info_get_type (void);
const gchar * gst_discoverer_subtitle_info_get_language(const GstDiscovererSubtitleInfo* info);
/**
* GstDiscovererResult:
* @GST_DISCOVERER_OK: The discovery was successful
* @GST_DISCOVERER_URI_INVALID: the URI is invalid
* @GST_DISCOVERER_ERROR: an error happened and the GError is set
* @GST_DISCOVERER_TIMEOUT: the discovery timed-out
* @GST_DISCOVERER_BUSY: the discoverer was already discovering a file
* @GST_DISCOVERER_MISSING_PLUGINS: Some plugins are missing for full discovery
*
* Result values for the discovery process.
*/
typedef enum {
GST_DISCOVERER_OK = 0,
GST_DISCOVERER_URI_INVALID = 1,
GST_DISCOVERER_ERROR = 2,
GST_DISCOVERER_TIMEOUT = 3,
GST_DISCOVERER_BUSY = 4,
GST_DISCOVERER_MISSING_PLUGINS = 5
} GstDiscovererResult;
/**
* GstDiscovererInfo:
*
* Structure containing the information of a URI analyzed by #GstDiscoverer.
*/
typedef struct _GstDiscovererInfo GstDiscovererInfo;
#define GST_TYPE_DISCOVERER_INFO \
(gst_discoverer_info_get_type ())
#define GST_DISCOVERER_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_INFO, GstDiscovererInfo))
#define GST_IS_DISCOVERER_INFO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_INFO))
typedef GObjectClass GstDiscovererInfoClass;
GType gst_discoverer_info_get_type (void);
#define gst_discoverer_info_unref(info) (g_object_unref((GObject*)info))
#define gst_discoverer_info_ref(info) (g_object_ref((Gbject*)info))
GstDiscovererInfo* gst_discoverer_info_copy (GstDiscovererInfo * ptr);
const gchar* gst_discoverer_info_get_uri(const GstDiscovererInfo* info);
GstDiscovererResult gst_discoverer_info_get_result(const GstDiscovererInfo* info);
GstDiscovererStreamInfo* gst_discoverer_info_get_stream_info(GstDiscovererInfo* info);
GList* gst_discoverer_info_get_stream_list(GstDiscovererInfo* info);
GstClockTime gst_discoverer_info_get_duration(const GstDiscovererInfo* info);
gboolean gst_discoverer_info_get_seekable(const GstDiscovererInfo* info);
const GstStructure* gst_discoverer_info_get_misc(const GstDiscovererInfo* info);
const GstTagList* gst_discoverer_info_get_tags(const GstDiscovererInfo* info);
const GstToc* gst_discoverer_info_get_toc(const GstDiscovererInfo* info);
GList * gst_discoverer_info_get_streams (GstDiscovererInfo *info,
GType streamtype);
GList * gst_discoverer_info_get_audio_streams (GstDiscovererInfo *info);
GList * gst_discoverer_info_get_video_streams (GstDiscovererInfo *info);
GList * gst_discoverer_info_get_subtitle_streams (GstDiscovererInfo *info);
GList * gst_discoverer_info_get_container_streams (GstDiscovererInfo *info);
void gst_discoverer_stream_info_list_free (GList *infos);
#define GST_TYPE_DISCOVERER \
(gst_discoverer_get_type())
#define GST_DISCOVERER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER,GstDiscoverer))
#define GST_DISCOVERER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DISCOVERER,GstDiscovererClass))
#define GST_IS_DISCOVERER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER))
#define GST_IS_DISCOVERER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DISCOVERER))
typedef struct _GstDiscoverer GstDiscoverer;
typedef struct _GstDiscovererClass GstDiscovererClass;
typedef struct _GstDiscovererPrivate GstDiscovererPrivate;
/**
* GstDiscoverer:
*
* The #GstDiscoverer structure.
**/
struct _GstDiscoverer {
GObject parent;
/*< private >*/
GstDiscovererPrivate *priv;
gpointer _reserved[GST_PADDING];
};
struct _GstDiscovererClass {
GObjectClass parentclass;
/* signals */
void (*finished) (GstDiscoverer *discoverer);
void (*starting) (GstDiscoverer *discoverer);
void (*discovered) (GstDiscoverer *discoverer,
GstDiscovererInfo *info,
const GError *err);
void (*source_setup) (GstDiscoverer *discoverer,
GstElement *source);
gpointer _reserved[GST_PADDING];
};
GType gst_discoverer_get_type (void);
GstDiscoverer *gst_discoverer_new (GstClockTime timeout, GError **err);
/* Asynchronous API */
void gst_discoverer_start (GstDiscoverer *discoverer);
void gst_discoverer_stop (GstDiscoverer *discoverer);
gboolean gst_discoverer_discover_uri_async (GstDiscoverer *discoverer,
const gchar *uri);
/* Synchronous API */
GstDiscovererInfo *
gst_discoverer_discover_uri (GstDiscoverer * discoverer,
const gchar * uri,
GError ** err);
G_END_DECLS
#endif /* _GST_DISCOVERER_H */
|
