[longomatch] Add discoverer functions based on GstDiscover

[Andoni Morales Alastruey <amorales src gnome org>]

commit 9ea5cfd7e5e05eab722dcf9544a2a3b8b9a0dcef
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Wed Mar 27 03:10:52 2013 +0100

    Add discoverer functions based on GstDiscover

 libcesarplayer/Makefile.am   |    3 +
 libcesarplayer/video-utils.c |  100 ++++++++++++++++++++++++++++++++++++++++++
 libcesarplayer/video-utils.h |    6 ++-
 3 files changed, 108 insertions(+), 1 deletions(-)
---
diff --git a/libcesarplayer/Makefile.am b/libcesarplayer/Makefile.am
index 4c383c8..b10e38f 100644
--- a/libcesarplayer/Makefile.am
+++ b/libcesarplayer/Makefile.am
@@ -62,3 +62,6 @@ EXTRA_DIST = \
 
 test-encoder: test-encoder.c gst-video-encoder.c
        ${CC} -o test-encoder test-encoder.c gst-video-encoder.c $(CESARPLAYER_CFLAGS) $(CESARPLAYER_LIBS) 
-O0 -g
+
+test-discoverer: test-discoverer.c video-utils.c
+       ${CC} -o test-discoverer test-discoverer.c video-utils.c $(CESARPLAYER_CFLAGS) $(CESARPLAYER_LIBS) 
-O0 -g
diff --git a/libcesarplayer/video-utils.c b/libcesarplayer/video-utils.c
index 6dab75d..3f2b8b8 100644
--- a/libcesarplayer/video-utils.c
+++ b/libcesarplayer/video-utils.c
@@ -290,3 +290,103 @@ init_backend (int argc, char **argv)
 {
   gst_init(&argc, &argv);
 }
+
+GstDiscovererResult
+lgm_discover_uri (
+    const gchar *uri, 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;
+
+  *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) {
+    return GST_DISCOVERER_ERROR;
+  }
+
+  info = gst_discoverer_discover_uri (discoverer, uri, err);
+  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);
+  g_print ("%s\n", gst_discoverer_stream_info_get_stream_type_nick (sinfo));
+  *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;
+}
diff --git a/libcesarplayer/video-utils.h b/libcesarplayer/video-utils.h
index 4fd9704..e2735da 100644
--- a/libcesarplayer/video-utils.h
+++ b/libcesarplayer/video-utils.h
@@ -29,6 +29,7 @@
 
 #include <gst/gst.h>
 #include <gst/interfaces/xoverlay.h>
+#include <gst/pbutils/pbutils.h>
 #include <gdk/gdk.h>
 #if defined (GDK_WINDOWING_X11)
 #include <gdk/gdkx.h>
@@ -67,4 +68,7 @@ guintptr gst_get_window_handle (GdkWindow *window);
 void gst_set_window_handle (GstXOverlay *overlay, guintptr window_handle);
 void init_debug();
 
-
+GstDiscovererResult lgm_discover_uri (const gchar *uri, 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);