static GstCaps * caps_from_audio_stream_info (GstDiscovererStreamInfo *info) { GstCaps *temp = gst_discoverer_stream_info_get_caps (info); GstCaps *caps = gst_caps_copy (temp); const GstDiscovererAudioInfo *audio_info = GST_DISCOVERER_AUDIO_INFO(info); guint data; gst_caps_unref (temp); data = gst_discoverer_audio_info_get_sample_rate (audio_info); if (data) gst_caps_set_simple (caps, "rate", G_TYPE_INT, data, NULL); data = gst_discoverer_audio_info_get_channels (audio_info); if (data) gst_caps_set_simple (caps, "channels", G_TYPE_INT, data, NULL); data = gst_discoverer_audio_info_get_bitrate (audio_info); if (data) gst_caps_set_simple (caps, "bitrate", G_TYPE_INT, data, NULL); data = gst_discoverer_audio_info_get_max_bitrate (audio_info); if (data) gst_caps_set_simple (caps, "maximum-bitrate", G_TYPE_INT, data, NULL); data = gst_discoverer_audio_info_get_depth (audio_info); if (data) gst_caps_set_simple (caps, "depth", G_TYPE_INT, data, NULL); return caps; }
gchar * lgm_filename_to_uri (const gchar *filename) { gchar *uri, *path; GError *err = NULL; #ifdef G_OS_WIN32 if (g_path_is_absolute(filename) || !gst_uri_is_valid (filename)) { #else if (!gst_uri_is_valid (filename)) { #endif if (!g_path_is_absolute (filename)) { gchar *cur_dir; cur_dir = g_get_current_dir (); path = g_build_filename (cur_dir, filename, NULL); g_free (cur_dir); } else { path = g_strdup (filename); } uri = g_filename_to_uri (path, NULL, &err); g_free (path); path = NULL; if (err != NULL) { g_error_free (err); return NULL; } } else { uri = g_strdup (filename); } return uri; } GstDiscovererResult lgm_discover_uri ( const gchar *filename, guint64 *duration, guint *width, guint *height, guint *fps_n, guint *fps_d, guint *par_n, guint *par_d, gchar **container, gchar **video_codec, gchar **audio_codec, GError **err) { GstDiscoverer *discoverer; GstDiscovererInfo *info; GList *videos = NULL, *audios = NULL; GstDiscovererStreamInfo *sinfo = NULL; GstDiscovererVideoInfo *vinfo = NULL; GstDiscovererAudioInfo *ainfo = NULL; GstDiscovererResult ret; gchar *uri; uri = lgm_filename_to_uri (filename); if (uri == NULL) { return GST_DISCOVERER_URI_INVALID; } *duration = *width = *height = *fps_n = *fps_d = *par_n = *par_d = 0; *container = *audio_codec = *video_codec = NULL; discoverer = gst_discoverer_new (4 * GST_SECOND, err); if (*err != NULL) { g_free (uri); return GST_DISCOVERER_ERROR; } info = gst_discoverer_discover_uri (discoverer, uri, err); g_free (uri); if (*err != NULL) { if (info != NULL) { return gst_discoverer_info_get_result (info); } else { return GST_DISCOVERER_ERROR; } } sinfo = gst_discoverer_info_get_stream_info (info); *duration = gst_discoverer_info_get_duration (info); if (GST_IS_DISCOVERER_CONTAINER_INFO (sinfo)) { GstCaps *caps; caps = gst_discoverer_stream_info_get_caps ( GST_DISCOVERER_STREAM_INFO(sinfo)); *container = gst_pb_utils_get_codec_description (caps); gst_caps_unref (caps); } if (GST_IS_DISCOVERER_AUDIO_INFO (sinfo)) { ainfo = GST_DISCOVERER_AUDIO_INFO (sinfo); } else { audios = gst_discoverer_info_get_audio_streams (info); if (audios != NULL) { ainfo = audios->data; } } if (ainfo != NULL) { GstCaps *caps; caps = gst_discoverer_stream_info_get_caps ( GST_DISCOVERER_STREAM_INFO (ainfo)); *audio_codec = gst_pb_utils_get_codec_description (caps); gst_caps_unref (caps); } if (audios != NULL) { gst_discoverer_stream_info_list_free (audios); } if (GST_IS_DISCOVERER_VIDEO_INFO (sinfo)) { vinfo = GST_DISCOVERER_VIDEO_INFO (sinfo); } else { videos = gst_discoverer_info_get_video_streams (info); if (videos != NULL) { vinfo = videos->data; } } if (vinfo != NULL) { GstCaps *caps; caps = gst_discoverer_stream_info_get_caps ( GST_DISCOVERER_STREAM_INFO (vinfo)); *video_codec = gst_pb_utils_get_codec_description (caps); gst_caps_unref (caps); *height = gst_discoverer_video_info_get_height (vinfo); *width = gst_discoverer_video_info_get_width (vinfo); *fps_n = gst_discoverer_video_info_get_framerate_num (vinfo); *fps_d = gst_discoverer_video_info_get_framerate_denom (vinfo); *par_n = gst_discoverer_video_info_get_par_num (vinfo); *par_d = gst_discoverer_video_info_get_par_denom (vinfo); } if (videos != NULL) { gst_discoverer_stream_info_list_free (videos); } ret = gst_discoverer_info_get_result (info); gst_discoverer_info_unref (info); g_object_unref (discoverer); return ret; }