gst-libs/gst/pbutils/gstdiscoverer.h

   1 /* GStreamer
   2  * Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
   3  *               2009 Nokia Corporation
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifndef _GST_DISCOVERER_H_
  22 #define _GST_DISCOVERER_H_
  23
  24 #include <gst/gst.h>
  25
  26 G_BEGIN_DECLS
  27
  28 #define GST_TYPE_DISCOVERER_STREAM_INFO \
  29   (gst_discoverer_stream_info_get_type ())
  30 #define GST_DISCOVERER_STREAM_INFO(obj) \
  31   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_STREAM_INFO, GstDiscovererStreamInfo))
  32 #define GST_IS_DISCOVERER_STREAM_INFO(obj) \
  33   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_STREAM_INFO))
  34 typedef struct _GstDiscovererStreamInfo GstDiscovererStreamInfo;
  35 typedef GObjectClass GstDiscovererStreamInfoClass;
  36
  37 GST_EXPORT
  38 GType gst_discoverer_stream_info_get_type (void);
  39
  40 /**
  41  * GstDiscovererStreamInfo:
  42  *
  43  * Base structure for information concerning a media stream. Depending on the
  44  * stream type, one can find more media-specific information in
  45  * #GstDiscovererAudioInfo, #GstDiscovererVideoInfo, and
  46  * #GstDiscovererContainerInfo.
  47  *
  48  * The #GstDiscovererStreamInfo represents the topology of the stream. Siblings
  49  * can be iterated over with gst_discoverer_stream_info_get_next() and
  50  * gst_discoverer_stream_info_get_previous(). Children (sub-streams) of a
  51  * stream can be accessed using the #GstDiscovererContainerInfo API.
  52  *
  53  * As a simple example, if you run #GstDiscoverer on an AVI file with one audio
  54  * and one video stream, you will get a #GstDiscovererContainerInfo
  55  * corresponding to the AVI container, which in turn will have a
  56  * #GstDiscovererAudioInfo sub-stream and a #GstDiscovererVideoInfo sub-stream
  57  * for the audio and video streams respectively.
  58  */
  59 #define gst_discoverer_stream_info_ref(info) ((GstDiscovererStreamInfo*) g_object_ref((GObject*) info))
  60 #define gst_discoverer_stream_info_unref(info) (g_object_unref((GObject*) info))
  61
  62 GST_EXPORT
  63 GstDiscovererStreamInfo* gst_discoverer_stream_info_get_previous(GstDiscovererStreamInfo* info);
  64
  65 GST_EXPORT
  66 GstDiscovererStreamInfo* gst_discoverer_stream_info_get_next(GstDiscovererStreamInfo* info);
  67
  68 GST_EXPORT
  69 GstCaps*                 gst_discoverer_stream_info_get_caps(GstDiscovererStreamInfo* info);
  70
  71 GST_EXPORT
  72 const GstTagList*        gst_discoverer_stream_info_get_tags(GstDiscovererStreamInfo* info);
  73
  74 GST_EXPORT
  75 const GstToc*            gst_discoverer_stream_info_get_toc(GstDiscovererStreamInfo* info);
  76
  77 GST_EXPORT
  78 const gchar*             gst_discoverer_stream_info_get_stream_id(GstDiscovererStreamInfo* info);
  79
  80 GST_EXPORT
  81 const GstStructure*      gst_discoverer_stream_info_get_misc(GstDiscovererStreamInfo* info);
  82
  83 GST_EXPORT
  84 const gchar *            gst_discoverer_stream_info_get_stream_type_nick(GstDiscovererStreamInfo* info);
  85
  86 /**
  87  * GstDiscovererContainerInfo:
  88  *
  89  * #GstDiscovererStreamInfo specific to container streams.
  90  */
  91 #define GST_TYPE_DISCOVERER_CONTAINER_INFO \
  92   (gst_discoverer_container_info_get_type ())
  93 #define GST_DISCOVERER_CONTAINER_INFO(obj) \
  94   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_CONTAINER_INFO, GstDiscovererContainerInfo))
  95 #define GST_IS_DISCOVERER_CONTAINER_INFO(obj) \
  96   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_CONTAINER_INFO))
  97 typedef struct _GstDiscovererContainerInfo GstDiscovererContainerInfo;
  98 typedef GObjectClass GstDiscovererContainerInfoClass;
  99
 100 GST_EXPORT
 101 GType gst_discoverer_container_info_get_type (void);
 102
 103 GST_EXPORT
 104 GList *gst_discoverer_container_info_get_streams(GstDiscovererContainerInfo *info);
 105
 106
 107 /**
 108  * GstDiscovererAudioInfo:
 109  *
 110  * #GstDiscovererStreamInfo specific to audio streams.
 111  */
 112 #define GST_TYPE_DISCOVERER_AUDIO_INFO \
 113   (gst_discoverer_audio_info_get_type ())
 114 #define GST_DISCOVERER_AUDIO_INFO(obj) \
 115   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_AUDIO_INFO, GstDiscovererAudioInfo))
 116 #define GST_IS_DISCOVERER_AUDIO_INFO(obj) \
 117   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_AUDIO_INFO))
 118 typedef struct _GstDiscovererAudioInfo GstDiscovererAudioInfo;
 119 typedef GObjectClass GstDiscovererAudioInfoClass;
 120
 121 GST_EXPORT
 122 GType gst_discoverer_audio_info_get_type (void);
 123
 124 GST_EXPORT
 125 guint gst_discoverer_audio_info_get_channels(const GstDiscovererAudioInfo* info);
 126
 127 GST_EXPORT
 128 guint64 gst_discoverer_audio_info_get_channel_mask(const GstDiscovererAudioInfo* info);
 129
 130 GST_EXPORT
 131 guint gst_discoverer_audio_info_get_sample_rate(const GstDiscovererAudioInfo* info);
 132
 133 GST_EXPORT
 134 guint gst_discoverer_audio_info_get_depth(const GstDiscovererAudioInfo* info);
 135
 136 GST_EXPORT
 137 guint gst_discoverer_audio_info_get_bitrate(const GstDiscovererAudioInfo* info);
 138
 139 GST_EXPORT
 140 guint gst_discoverer_audio_info_get_max_bitrate(const GstDiscovererAudioInfo* info);
 141
 142 GST_EXPORT
 143 const gchar * gst_discoverer_audio_info_get_language(const GstDiscovererAudioInfo* info);
 144
 145 /**
 146  * GstDiscovererVideoInfo:
 147  *
 148  * #GstDiscovererStreamInfo specific to video streams (this includes images).
 149  */
 150 #define GST_TYPE_DISCOVERER_VIDEO_INFO \
 151   (gst_discoverer_video_info_get_type ())
 152 #define GST_DISCOVERER_VIDEO_INFO(obj) \
 153   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_VIDEO_INFO, GstDiscovererVideoInfo))
 154 #define GST_IS_DISCOVERER_VIDEO_INFO(obj) \
 155   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_VIDEO_INFO))
 156 typedef struct _GstDiscovererVideoInfo GstDiscovererVideoInfo;
 157 typedef GObjectClass GstDiscovererVideoInfoClass;
 158
 159 GST_EXPORT
 160 GType gst_discoverer_video_info_get_type (void);
 161
 162 GST_EXPORT
 163 guint           gst_discoverer_video_info_get_width(const GstDiscovererVideoInfo* info);
 164
 165 GST_EXPORT
 166 guint           gst_discoverer_video_info_get_height(const GstDiscovererVideoInfo* info);
 167
 168 GST_EXPORT
 169 guint           gst_discoverer_video_info_get_depth(const GstDiscovererVideoInfo* info);
 170
 171 GST_EXPORT
 172 guint           gst_discoverer_video_info_get_framerate_num(const GstDiscovererVideoInfo* info);
 173
 174 GST_EXPORT
 175 guint           gst_discoverer_video_info_get_framerate_denom(const GstDiscovererVideoInfo* info);
 176
 177 GST_EXPORT
 178 guint           gst_discoverer_video_info_get_par_num(const GstDiscovererVideoInfo* info);
 179
 180 GST_EXPORT
 181 guint           gst_discoverer_video_info_get_par_denom(const GstDiscovererVideoInfo* info);
 182
 183 GST_EXPORT
 184 gboolean        gst_discoverer_video_info_is_interlaced(const GstDiscovererVideoInfo* info);
 185
 186 GST_EXPORT
 187 guint           gst_discoverer_video_info_get_bitrate(const GstDiscovererVideoInfo* info);
 188
 189 GST_EXPORT
 190 guint           gst_discoverer_video_info_get_max_bitrate(const GstDiscovererVideoInfo* info);
 191
 192 GST_EXPORT
 193 gboolean        gst_discoverer_video_info_is_image(const GstDiscovererVideoInfo* info);
 194
 195 /**
 196  * GstDiscovererSubtitleInfo:
 197  *
 198  * #GstDiscovererStreamInfo specific to subtitle streams (this includes text and
 199  * image based ones).
 200  */
 201 #define GST_TYPE_DISCOVERER_SUBTITLE_INFO \
 202   (gst_discoverer_subtitle_info_get_type ())
 203 #define GST_DISCOVERER_SUBTITLE_INFO(obj) \
 204   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_SUBTITLE_INFO, GstDiscovererSubtitleInfo))
 205 #define GST_IS_DISCOVERER_SUBTITLE_INFO(obj) \
 206   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_SUBTITLE_INFO))
 207 typedef struct _GstDiscovererSubtitleInfo GstDiscovererSubtitleInfo;
 208 typedef GObjectClass GstDiscovererSubtitleInfoClass;
 209
 210 GST_EXPORT
 211 GType gst_discoverer_subtitle_info_get_type (void);
 212
 213 GST_EXPORT
 214 const gchar *   gst_discoverer_subtitle_info_get_language(const GstDiscovererSubtitleInfo* info);
 215
 216 /**
 217  * GstDiscovererResult:
 218  * @GST_DISCOVERER_OK: The discovery was successful
 219  * @GST_DISCOVERER_URI_INVALID: the URI is invalid
 220  * @GST_DISCOVERER_ERROR: an error happened and the GError is set
 221  * @GST_DISCOVERER_TIMEOUT: the discovery timed-out
 222  * @GST_DISCOVERER_BUSY: the discoverer was already discovering a file
 223  * @GST_DISCOVERER_MISSING_PLUGINS: Some plugins are missing for full discovery
 224  *
 225  * Result values for the discovery process.
 226  */
 227 typedef enum {
 228   GST_DISCOVERER_OK               = 0,
 229   GST_DISCOVERER_URI_INVALID      = 1,
 230   GST_DISCOVERER_ERROR            = 2,
 231   GST_DISCOVERER_TIMEOUT          = 3,
 232   GST_DISCOVERER_BUSY             = 4,
 233   GST_DISCOVERER_MISSING_PLUGINS  = 5
 234 } GstDiscovererResult;
 235
 236 /**
 237  * GstDiscovererSerializeFlags:
 238  * @GST_DISCOVERER_SERIALIZE_BASIC: Serialize only basic information, excluding
 239  * caps, tags and miscellaneous information
 240  * @GST_DISCOVERER_SERIALIZE_CAPS: Serialize the caps for each stream
 241  * @GST_DISCOVERER_SERIALIZE_TAGS: Serialize the tags for each stream
 242  * @GST_DISCOVERER_SERIALIZE_MISC: Serialize miscellaneous information for each stream
 243  * @GST_DISCOVERER_SERIALIZE_ALL: Serialize all the available info, including
 244  * caps, tags and miscellaneous information
 245  *
 246  * You can use these flags to control what is serialized by
 247  * gst_discoverer_info_to_variant()
 248  *
 249  * Since: 1.6
 250  */
 251
 252 typedef enum {
 253   GST_DISCOVERER_SERIALIZE_BASIC = 0,
 254   GST_DISCOVERER_SERIALIZE_CAPS  = 1 << 0,
 255   GST_DISCOVERER_SERIALIZE_TAGS  = 1 << 1,
 256   GST_DISCOVERER_SERIALIZE_MISC  = 1 << 2,
 257   GST_DISCOVERER_SERIALIZE_ALL   = GST_DISCOVERER_SERIALIZE_CAPS | GST_DISCOVERER_SERIALIZE_TAGS | GST_DISCOVERER_SERIALIZE_MISC
 258 } GstDiscovererSerializeFlags;
 259
 260 /**
 261  * GstDiscovererInfo:
 262  *
 263  * Structure containing the information of a URI analyzed by #GstDiscoverer.
 264  */
 265 typedef struct _GstDiscovererInfo GstDiscovererInfo;
 266
 267 #define GST_TYPE_DISCOVERER_INFO \
 268   (gst_discoverer_info_get_type ())
 269 #define GST_DISCOVERER_INFO(obj) \
 270   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER_INFO, GstDiscovererInfo))
 271 #define GST_IS_DISCOVERER_INFO(obj) \
 272   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER_INFO))
 273 typedef GObjectClass GstDiscovererInfoClass;
 274
 275 GST_EXPORT
 276 GType gst_discoverer_info_get_type (void);
 277
 278 #define gst_discoverer_info_unref(info) (g_object_unref((GObject*)info))
 279 #define gst_discoverer_info_ref(info) (g_object_ref((GObject*)info))
 280
 281 GST_EXPORT
 282 GstDiscovererInfo*        gst_discoverer_info_copy (GstDiscovererInfo * ptr);
 283
 284 GST_EXPORT
 285 const gchar*              gst_discoverer_info_get_uri(const GstDiscovererInfo* info);
 286
 287 GST_EXPORT
 288 GstDiscovererResult       gst_discoverer_info_get_result(const GstDiscovererInfo* info);
 289
 290 GST_EXPORT
 291 GstDiscovererStreamInfo*  gst_discoverer_info_get_stream_info(GstDiscovererInfo* info);
 292
 293 GST_EXPORT
 294 GList*                    gst_discoverer_info_get_stream_list(GstDiscovererInfo* info);
 295
 296 GST_EXPORT
 297 GstClockTime              gst_discoverer_info_get_duration(const GstDiscovererInfo* info);
 298
 299 GST_EXPORT
 300 gboolean                  gst_discoverer_info_get_seekable(const GstDiscovererInfo* info);
 301
 302 GST_EXPORT
 303 gboolean                  gst_discoverer_info_get_live(const GstDiscovererInfo* info);
 304
 305 GST_EXPORT
 306 const GstStructure*       gst_discoverer_info_get_misc(const GstDiscovererInfo* info);
 307
 308 GST_EXPORT
 309 const GstTagList*         gst_discoverer_info_get_tags(const GstDiscovererInfo* info);
 310 GST_EXPORT
 311 const GstToc*             gst_discoverer_info_get_toc(const GstDiscovererInfo* info);
 312
 313 GST_EXPORT
 314 const gchar**             gst_discoverer_info_get_missing_elements_installer_details(const GstDiscovererInfo* info);
 315
 316 GST_EXPORT
 317 GList *                   gst_discoverer_info_get_streams (GstDiscovererInfo *info,
 318                                                            GType streamtype);
 319
 320 GST_EXPORT
 321 GList *                   gst_discoverer_info_get_audio_streams (GstDiscovererInfo *info);
 322
 323 GST_EXPORT
 324 GList *                   gst_discoverer_info_get_video_streams (GstDiscovererInfo *info);
 325
 326 GST_EXPORT
 327 GList *                   gst_discoverer_info_get_subtitle_streams (GstDiscovererInfo *info);
 328
 329 GST_EXPORT
 330 GList *                   gst_discoverer_info_get_container_streams (GstDiscovererInfo *info);
 331
 332 GST_EXPORT
 333 GVariant *                gst_discoverer_info_to_variant (GstDiscovererInfo *info,
 334                                                           GstDiscovererSerializeFlags flags);
 335
 336 GST_EXPORT
 337 GstDiscovererInfo *       gst_discoverer_info_from_variant (GVariant *variant);
 338
 339 GST_EXPORT
 340 void                      gst_discoverer_stream_info_list_free (GList *infos);
 341
 342 #define GST_TYPE_DISCOVERER \
 343   (gst_discoverer_get_type())
 344 #define GST_DISCOVERER(obj) \
 345   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISCOVERER,GstDiscoverer))
 346 #define GST_DISCOVERER_CLASS(klass) \
 347   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DISCOVERER,GstDiscovererClass))
 348 #define GST_IS_DISCOVERER(obj) \
 349   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISCOVERER))
 350 #define GST_IS_DISCOVERER_CLASS(klass) \
 351   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DISCOVERER))
 352
 353 typedef struct _GstDiscoverer GstDiscoverer;
 354 typedef struct _GstDiscovererClass GstDiscovererClass;
 355 typedef struct _GstDiscovererPrivate GstDiscovererPrivate;
 356
 357 /**
 358  * GstDiscoverer:
 359  *
 360  * The #GstDiscoverer structure.
 361  **/
 362 struct _GstDiscoverer {
 363   GObject parent;
 364
 365   /*< private >*/
 366   GstDiscovererPrivate *priv;
 367
 368   gpointer _reserved[GST_PADDING];
 369 };
 370
 371 struct _GstDiscovererClass {
 372   GObjectClass parentclass;
 373
 374   /* signals */
 375   void        (*finished)        (GstDiscoverer *discoverer);
 376   void        (*starting)        (GstDiscoverer *discoverer);
 377   void        (*discovered)      (GstDiscoverer *discoverer,
 378                                   GstDiscovererInfo *info,
 379                                   const GError *err);
 380   void        (*source_setup)    (GstDiscoverer *discoverer,
 381                                   GstElement *source);
 382
 383   gpointer _reserved[GST_PADDING];
 384 };
 385
 386 GST_EXPORT
 387 GType          gst_discoverer_get_type (void);
 388
 389 GST_EXPORT
 390 GstDiscoverer *gst_discoverer_new (GstClockTime timeout, GError **err);
 391
 392 /* Asynchronous API */
 393
 394 GST_EXPORT
 395 void           gst_discoverer_start (GstDiscoverer *discoverer);
 396
 397 GST_EXPORT
 398 void           gst_discoverer_stop (GstDiscoverer *discoverer);
 399
 400 GST_EXPORT
 401 gboolean       gst_discoverer_discover_uri_async (GstDiscoverer *discoverer,
 402                                                   const gchar *uri);
 403
 404 /* Synchronous API */
 405
 406 GST_EXPORT
 407 GstDiscovererInfo *
 408 gst_discoverer_discover_uri (GstDiscoverer * discoverer,
 409                              const gchar * uri,
 410                              GError ** err);
 411
 412 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
 413 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDiscoverer, gst_object_unref)
 414 #endif
 415
 416 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
 417 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDiscovererAudioInfo, gst_object_unref)
 418 #endif
 419
 420 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
 421 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDiscovererContainerInfo, gst_object_unref)
 422 #endif
 423
 424 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
 425 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDiscovererInfo, gst_object_unref)
 426 #endif
 427
 428 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
 429 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDiscovererStreamInfo, gst_object_unref)
 430 #endif
 431
 432 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
 433 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDiscovererSubtitleInfo, gst_object_unref)
 434 #endif
 435
 436 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
 437 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDiscovererVideoInfo, gst_object_unref)
 438 #endif
 439
 440 G_END_DECLS
 441
 442 #endif /* _GST_DISCOVERER_H */