adding preliminary libfame plugin it's still too green to be useful, literally and needs some major fixing up

Original commit message from CVS:
adding preliminary libfame plugin
it's still too green to be useful, literally
and needs some major fixing up

3 files changed, 535 insertions, 0 deletions

diff --git a/ext/libfame/Makefile.am b/ext/libfame/Makefile.am
new file mode 100644
index 00000000..e272082e
--- /dev/null
+++ b/ext/libfame/Makefile.am
@@ -0,0 +1,9 @@
+plugindir = $(libdir)/gst
+
+plugin_LTLIBRARIES = libgstlibfame.la
+
+libgstlibfame_la_SOURCES = gstlibfame.c	
+libgstlibfame_la_CFLAGS = $(GST_CFLAGS)
+libgstlibfame_la_LIBADD = $(LIBFAME_LIBS) 
+libgstlibfame_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
diff --git a/ext/libfame/gstlibfame.c b/ext/libfame/gstlibfame.c
new file mode 100644
index 00000000..dd63a7b2
--- /dev/null
+++ b/ext/libfame/gstlibfame.c
@@ -0,0 +1,441 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <fame.h>
+#include <string.h>
+
+#include "gstlibfame.h"
+
+#define LIBFAME_BUFFER_SIZE (1024 * 1024) /* FIXME: do this properly */
+
+/* elementfactory information */
+static GstElementDetails gst_libfame_details = {
+  "MPEG1 and MPEG4 video encoder using the libfame library",
+  "Codec/Video/Encoder",
+  "Uses libfame to encode MPEG video streams",
+  VERSION,
+  "(C) 1996, MPEG Software Simulation Group\n"
+  "Thomas Vander Stichele <thomas@apestaart.org>",
+  "(C) 2002",
+};
+
+/* Libfame signals and args */
+enum {
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum {
+  ARG_0,
+  ARG_VERSION,
+  ARG_FPS,
+  ARG_QUALITY,
+  ARG_BITRATE,
+  /* FILL ME */
+};
+
+/* FIXME: either use or delete this */
+/*
+static double video_rates[16] =
+{
+  0.0,
+  24000.0/1001.,
+  24.0,
+  25.0,
+  30000.0/1001.,
+  30.0,
+  50.0,
+  60000.0/1001.,
+  60.0,
+  1,
+  5,
+  10,
+  12,
+  15,
+  0,
+  0
+};
+*/
+
+GST_PAD_TEMPLATE_FACTORY (sink_template_factory,
+  "sink",
+  GST_PAD_SINK,
+  GST_PAD_ALWAYS,
+  GST_CAPS_NEW (
+    "libfame_sink_caps",
+    "video/raw",
+      "format",		GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+      "width",		GST_PROPS_INT_RANGE (16, 4096),
+      "height",		GST_PROPS_INT_RANGE (16, 4096)
+  )
+)
+
+GST_PAD_TEMPLATE_FACTORY (src_template_factory,
+  "src",
+  GST_PAD_SRC,
+  GST_PAD_ALWAYS,
+  GST_CAPS_NEW (
+    "libfame_src_caps",
+    "video/mpeg",
+      "mpegversion", GST_PROPS_LIST (
+	  GST_PROPS_INT (1), GST_PROPS_INT (4)),
+      "systemstream", GST_PROPS_BOOLEAN (FALSE)
+  )
+);
+
+static void	gst_libfame_class_init		(GstLibfameClass *klass);
+static void	gst_libfame_init		(GstLibfame *libfame);
+static void	gst_libfame_dispose		(GObject *object);
+
+static void	gst_libfame_set_property	(GObject *object, guint prop_id, 
+						 const GValue *value, GParamSpec *pspec);
+static void	gst_libfame_get_property	(GObject *object, guint prop_id, 
+						 GValue *value, GParamSpec *pspec);
+
+static void	gst_libfame_chain		(GstPad *pad, GstBuffer *buf);
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_libfame_signals[LAST_SIGNAL] = { 0 };*/
+
+GType
+gst_libfame_get_type (void)
+{
+  static GType libfame_type = 0;
+
+  if (!libfame_type) {
+    static const GTypeInfo libfame_info = {
+      sizeof (GstLibfameClass),      
+      NULL,
+      NULL,
+      (GClassInitFunc) gst_libfame_class_init,
+      NULL,
+      NULL,
+      sizeof (GstLibfame),
+      0,
+      (GInstanceInitFunc) gst_libfame_init,
+    };
+    libfame_type = g_type_register_static (GST_TYPE_ELEMENT, 
+	                                   "GstLibfame", &libfame_info, 0);
+  }
+  return libfame_type;
+}
+
+static void
+gst_libfame_class_init (GstLibfameClass *klass)
+{
+  GObjectClass *gobject_class = NULL;
+  GstElementClass *gstelement_class = NULL;
+
+  gobject_class = (GObjectClass*) klass;
+  gstelement_class = (GstElementClass*) klass;
+
+  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+  gobject_class->set_property = gst_libfame_set_property;
+  gobject_class->get_property = gst_libfame_get_property;
+  gobject_class->dispose = gst_libfame_dispose;
+
+  g_object_class_install_property (gobject_class, ARG_VERSION,
+    g_param_spec_int ("mpeg_version", "MPEG Version", 
+	              "MPEG Codec Version (1 or 4)",
+                      1, 4, 1, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_FPS,
+    g_param_spec_double ("frames_per_second", "Frames per second", 
+	                 "Number of frames per second",
+                        -G_MAXDOUBLE, G_MAXDOUBLE, 25.0, G_PARAM_READWRITE));
+/*
+  g_object_class_install_property (gobject_class, ARG_BITRATE,
+    g_param_spec_int ("bitrate", "bitrate", "bitrate",
+                      0, 1500000, 10, G_PARAM_READWRITE)); */
+  /* CHECKME */
+  g_object_class_install_property (gobject_class, ARG_QUALITY,
+    g_param_spec_int ("quality", "Quality", 
+	              "Percentage of quality of compression (versus size)",
+                      0, 100, 75, G_PARAM_READWRITE)); /* CHECKME */
+}
+
+static GstPadConnectReturn
+gst_libfame_sinkconnect (GstPad *pad, GstCaps *caps)
+{
+  gint width, height;
+  GstLibfame *libfame;
+
+  libfame = GST_LIBFAME (gst_pad_get_parent (pad));
+
+  if (!GST_CAPS_IS_FIXED (caps)) 
+    return GST_PAD_CONNECT_DELAYED;
+
+  if (libfame->initialized)
+  {
+    GST_DEBUG(0, "error: libfame encoder already initialized !");
+    return GST_PAD_CONNECT_REFUSED;
+  }
+
+  gst_caps_get_int (caps, "width", &width);
+  gst_caps_get_int (caps, "height", &height);
+  
+  /* FIXME: do better error handling here */
+  /* libfame requires width and height to be multiples of 16 */
+  g_assert (width % 16 == 0);
+  g_assert (height % 16 == 0);
+
+  libfame->fp.width = width;
+  libfame->fp.height = height;
+  libfame->fp.coding = "I";
+
+  /* FIXME: choose good parameters */
+  libfame->fp.slices_per_frame = 1;
+  libfame->fp.frames_per_sequence = 0xffffffff; /* infinite */
+  /* FIXME: 25 fps */
+  libfame->fp.frame_rate_num = 25;
+  libfame->fp.frame_rate_den = 1;
+
+  /* FIXME: handle these properly */
+  libfame->fp.shape_quality = 100;
+  libfame->fp.search_range = 0;
+  libfame->fp.verbose = 1;
+  libfame->fp.profile = "mpeg1";
+  libfame->fp.total_frames = 0;
+  libfame->fp.retrieve_cb = NULL;
+
+  fame_init (libfame->fc, &libfame->fp, libfame->buffer, libfame->buffer_size);
+
+  g_print ("libfame: init done.\n");
+  g_assert (libfame->fc != NULL); /* FIXME */
+  libfame->initialized = TRUE;
+  return GST_PAD_CONNECT_OK;
+}
+
+static void
+gst_libfame_init (GstLibfame *libfame)
+{
+  g_assert (libfame != NULL);
+  g_assert (GST_IS_LIBFAME (libfame));
+
+  /* open libfame */
+  libfame->fc = fame_open ();
+  g_assert (libfame->fc != NULL);
+
+  /* create the sink and src pads */
+  libfame->sinkpad = gst_pad_new_from_template (
+		  GST_PAD_TEMPLATE_GET (sink_template_factory), "sink");
+  gst_element_add_pad (GST_ELEMENT (libfame), libfame->sinkpad);
+  gst_pad_set_chain_function (libfame->sinkpad, gst_libfame_chain);
+  gst_pad_set_connect_function (libfame->sinkpad, gst_libfame_sinkconnect);
+
+  libfame->srcpad = gst_pad_new_from_template (
+                      GST_PAD_TEMPLATE_GET (src_template_factory), "src");
+  gst_element_add_pad (GST_ELEMENT (libfame), libfame->srcpad);
+  /* FIXME: set some more handler functions here */
+
+  /* reset the initial video state */
+  libfame->width = -1;
+  libfame->height = -1;
+  libfame->initialized = FALSE;
+
+  /* defaults */
+  libfame->fp.quality = 75;
+  libfame->fp.frame_rate_num = 25;
+  libfame->fp.frame_rate_den = 1; /* avoid floating point exceptions */
+  libfame->fp.profile = g_strdup_printf ("mpeg1");
+
+  /* allocate space for the buffer */
+  libfame->buffer_size = LIBFAME_BUFFER_SIZE; /* FIXME */
+  libfame->buffer = (unsigned char *) g_malloc (libfame->buffer_size);
+}
+
+static void
+gst_libfame_dispose (GObject *object)
+{
+  GstLibfame *libfame = GST_LIBFAME (object);
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+
+  g_free (libfame->buffer);
+}
+
+static void
+gst_libfame_chain (GstPad *pad, GstBuffer *buf)
+{
+  GstLibfame *libfame = NULL;
+  guchar *data = NULL;
+  gulong size;
+  GstBuffer *outbuf = NULL;
+  int length;
+
+  g_return_if_fail (pad != NULL);
+  g_return_if_fail (GST_IS_PAD (pad));
+  g_return_if_fail (buf != NULL);
+  g_return_if_fail (GST_IS_BUFFER (buf));
+
+  libfame = GST_LIBFAME (gst_pad_get_parent (pad));
+
+  data = (guchar *) GST_BUFFER_DATA (buf);
+  size = GST_BUFFER_SIZE (buf);
+  GST_DEBUG (0,"gst_libfame_chain: got buffer of %ld bytes in '%s'", 
+	     size, GST_OBJECT_NAME (libfame));
+
+  /* the data contains the three planes side by side, with size w * h, w * h /4,
+   * w * h / 4 */
+  libfame->fy.w = libfame->fp.width;
+  libfame->fy.h = libfame->fp.height;
+  libfame->fy.p = 0; /* FIXME: is this pointing to previous data ? */
+  libfame->fy.y = data;
+  libfame->fy.u = data + libfame->width * libfame->height;
+  libfame->fy.v = data + 5 * libfame->width * libfame->height / 4;
+  fame_start_frame (libfame->fc, &libfame->fy, NULL);
+
+  while ((length = fame_encode_slice (libfame->fc)) != 0)
+  {
+    outbuf = gst_buffer_new ();
+
+    /* FIXME: safeguard, remove me when a better way is found */
+    if (length > LIBFAME_BUFFER_SIZE)
+      g_warning ("LIBFAME_BUFFER_SIZE is defined too low, encoded slice has size %d !\n", length);
+    GST_BUFFER_SIZE (outbuf) = length;
+    GST_BUFFER_DATA (outbuf) = g_malloc (length);
+    memcpy (GST_BUFFER_DATA(outbuf), libfame->buffer, length);
+    GST_DEBUG (0,"gst_libfame_chain: pushing buffer of size %d",
+               GST_BUFFER_SIZE(outbuf));
+    gst_pad_push (libfame->srcpad, outbuf);
+    gst_buffer_unref(buf);
+  }
+
+  fame_end_frame (libfame->fc, NULL); /* FIXME: get stats */
+}
+
+static void
+gst_libfame_set_property (GObject *object, guint prop_id, 
+	                  const GValue *value, GParamSpec *pspec)
+{
+  GstLibfame *src;
+
+  g_return_if_fail (GST_IS_LIBFAME (object));
+  src = GST_LIBFAME (object);
+
+  if (src->initialized)
+  {
+      GST_DEBUG(0, "error: libfame encoder already initialized, cannot set properties !");
+      return;
+  }
+
+  switch (prop_id) {
+    case ARG_VERSION:
+      {
+        int version = g_value_get_int (value);
+	if (version != 1 && version != 4)
+	{
+	  g_warning ("libfame: only use MPEG version 1 or 4 !");
+	  break;
+	}
+	/*
+	if (src->fp.profile) 
+	{ g_free (src->fp.profile); src->fp.profile = NULL; }
+	src->fp.profile = g_strdup_printf ("mpeg%d", version);
+	*/
+	/* FIXME: this should be done using fame_register */
+	break;
+      }
+    case ARG_FPS:
+	/* FIXME: we could do a much better job of finding num and den here */
+	src->fp.frame_rate_num = g_value_get_double (value);
+	src->fp.frame_rate_den = 1;
+	gst_info ("libfame: setting framerate for encoding to %f (%d/%d)\n", 
+		  (float) src->fp.frame_rate_num / src->fp.frame_rate_den,
+		  src->fp.frame_rate_num, src->fp.frame_rate_den);
+	break;
+
+    case ARG_QUALITY:
+      {
+	int quality;
+
+    	quality = g_value_get_int (value);
+	/* quality is a percentage */
+	if (quality < 0) quality = 0;
+	if (quality > 100) quality = 100;
+	src->fp.quality = quality;
+	gst_info ("libfame: setting quality for encoding to %d\n",  quality);
+	g_warning ("libfame: setting quality for encoding to %d\n",  quality);
+        break;
+      }
+    case ARG_BITRATE:
+	g_warning ("bitrate not implemented yet !\n");
+	/*
+      src->encoder->seq.bit_rate = g_value_get_int (value);
+      */
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_libfame_get_property (GObject *object, guint prop_id, 
+	                  GValue *value, GParamSpec *pspec)
+{
+  GstLibfame *src;
+
+  g_return_if_fail (GST_IS_LIBFAME (object));
+  src = GST_LIBFAME (object);
+
+  switch (prop_id) {
+    case ARG_FPS:
+      g_value_set_double (value, (src->fp.frame_rate_num / 
+		                  src->fp.frame_rate_den));
+      break;
+    case ARG_QUALITY:
+      g_value_set_int (value, src->fp.quality);
+      break;
+    case ARG_BITRATE:
+      g_warning ("You think you WANT to know bitrate ? Think AGAIN !\n");
+      /* g_value_set_int (value, src->encoder->seq.bit_rate); */
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+  GstElementFactory *factory;
+
+  /* create an elementfactory for the libfame element */
+  factory = gst_element_factory_new ("libfame", GST_TYPE_LIBFAME,
+                                     &gst_libfame_details);
+  g_return_val_if_fail (factory != NULL, FALSE);
+
+  gst_element_factory_add_pad_template (factory, 
+      GST_PAD_TEMPLATE_GET (sink_template_factory));
+  gst_element_factory_add_pad_template (factory, 
+      GST_PAD_TEMPLATE_GET (src_template_factory));
+
+  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+  return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+  GST_VERSION_MAJOR,
+  GST_VERSION_MINOR,
+  "libfame",
+  plugin_init
+};
diff --git a/ext/libfame/gstlibfame.h b/ext/libfame/gstlibfame.h
new file mode 100644
index 00000000..f56f651d
--- /dev/null
+++ b/ext/libfame/gstlibfame.h
@@ -0,0 +1,85 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_LIBFAME_H__
+#define __GST_LIBFAME_H__
+
+#include <gst/gst.h>
+#include <fame.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_LIBFAME \
+  (gst_libfame_get_type())
+#define GST_LIBFAME(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_LIBFAME,GstLibfame))
+#define GST_LIBFAME_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_LIBFAME,GstLibfame))
+#define GST_IS_LIBFAME(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_LIBFAME))
+#define GST_IS_LIBFAME_CLASS(obj) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_LIBFAME))
+
+typedef struct _GstLibfame GstLibfame;
+typedef struct _GstLibfameClass GstLibfameClass;
+
+struct _GstLibfame {
+  GstElement element;
+
+  /* pads */
+  GstPad *sinkpad, *srcpad;
+
+  /* the timestamp of the next frame */
+  guint64 next_time;
+  /* the interval between frames */
+  guint64 time_interval;
+
+  /* video state */
+  gint format;
+  gint width;
+  gint height;
+  /* the size of the output buffer */
+  gint outsize;
+
+  /* libfame stuff */
+  fame_context_t *fc;
+  fame_parameters_t fp;
+  fame_yuv_t fy;
+  gulong buffer_size;
+  unsigned char *buffer;
+  gboolean initialized;
+};
+
+struct _GstLibfameClass {
+  GstElementClass parent_class;
+};
+
+GType gst_libfame_get_type (void);
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_LIBFAME_H__ */