added a typefind function for all supported audiofile types.

Original commit message from CVS:
added a typefind function for all supported audiofile types.

the type is called audio/audiofile - I could have split it into seperate types like audio/aiff and audio/wave but there doesn't seem to be a way to have a padtemplate respond to more than one type, hence this umbrella type.

Also, fixed optimisation logic so that aiffs are read through the lib.

ext/audiofile/gstafparse.c

@@ -149,8 +149,7 @@ gst_afparse_init (GstAFParse *afparse)
   afparse->vfile->seek = gst_afparse_vf_seek;
   afparse->vfile->tell = gst_afparse_vf_tell;
 
-  /* default to low latency */
-  afparse->frames_per_read = 64;
+  afparse->frames_per_read = 1024;
   afparse->curoffset = 0;
   afparse->seq = 0;
 
@@ -175,6 +174,7 @@ gst_afparse_loop(GstElement *element)
   guint8 *data;
   gboolean bypass_afread = TRUE;
   GstByteStream *bs;
+  int s_format, v_format, s_width, v_width;
 
   afparse = GST_AFPARSE(element);
 
@@ -191,15 +191,15 @@ gst_afparse_loop(GstElement *element)
   /* if audiofile changes the data in any way, we have to access
    * the audio data via afReadFrames. Otherwise we can just access
    * the data directly. */
+  afGetSampleFormat(afparse->file, AF_DEFAULT_TRACK, &s_format, &s_width);
+  afGetVirtualSampleFormat(afparse->file, AF_DEFAULT_TRACK, &v_format, &v_width);
   if (afGetCompression != AF_COMPRESSION_NONE ||
-      afGetByteOrder(afparse->file, AF_DEFAULT_TRACK) != afGetVirtualByteOrder(afparse->file, AF_DEFAULT_TRACK)){
-    int s_format, v_format, s_width, v_width;
-    afGetSampleFormat(afparse->file, AF_DEFAULT_TRACK, &s_format, &s_width);
-    afGetVirtualSampleFormat(afparse->file, AF_DEFAULT_TRACK, &v_format, &v_width);
-    if (s_format != v_format || s_width != v_width){
-      bypass_afread = FALSE;
-    }
+      afGetByteOrder(afparse->file, AF_DEFAULT_TRACK) != afGetVirtualByteOrder(afparse->file, AF_DEFAULT_TRACK) ||
+      s_format != v_format || 
+      s_width != v_width){
+    bypass_afread = FALSE;
   }
+
   if (bypass_afread){
     g_print("will bypass afReadFrames\n");
   }
@@ -226,9 +226,10 @@ gst_afparse_loop(GstElement *element)
           break;
         }
       }
-
-      gst_pad_push (afparse->srcpad, buf);
-      afparse->timestamp += numframes * 1E9 / afparse->rate;
+      else {
+        gst_pad_push (afparse->srcpad, buf);
+        afparse->timestamp += numframes * 1E9 / afparse->rate;
+      }
     }
     while (TRUE);
 
@@ -255,7 +256,6 @@ gst_afparse_loop(GstElement *element)
     }
     while (TRUE);
   }
-
   gst_afparse_close_file (afparse);
   gst_buffer_pool_unref(bufpool);
   

ext/audiofile/gstaftypes.c

@@ -0,0 +1,186 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ *                    2000 Wim Taymans <wtay@chello.be>
+ *
+ * gstaftypes.c: 
+ *
+ * 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 <gst/gst.h>
+#include <string.h>
+#include <audiofile.h>
+#include <af_vfs.h>
+
+static ssize_t gst_aftypes_vf_read (AFvirtualfile *vfile, void *data, size_t nbytes);
+static long gst_aftypes_vf_length (AFvirtualfile *vfile);
+static ssize_t gst_aftypes_vf_write (AFvirtualfile *vfile, const void *data, size_t nbytes);
+static void gst_aftypes_vf_destroy(AFvirtualfile *vfile);
+static long gst_aftypes_vf_seek   (AFvirtualfile *vfile, long offset, int is_relative);
+static long gst_aftypes_vf_tell   (AFvirtualfile *vfile);
+
+static GstCaps* gst_aftypes_type_find(GstBuffer *buf, gpointer private);
+
+static GstTypeDefinition aftype_definitions[] = {
+  { "aftypes audio/audiofile", "audio/audiofile", ".wav .aiff .aif .aifc", gst_aftypes_type_find },
+  { NULL, NULL, NULL, NULL },
+};
+
+typedef struct _GstAFTypesBuffer GstAFTypesBuffer;
+struct _GstAFTypesBuffer {
+  GstBuffer *buffer;
+  long offset;
+};
+
+static GstCaps* 
+gst_aftypes_type_find(GstBuffer *buf, gpointer private)
+{
+  
+  GstAFTypesBuffer *buffer_wrap = g_new0(GstAFTypesBuffer, 1);
+  AFvirtualfile *vfile;
+  AFfilehandle file;
+  int file_format, format_version;
+
+  g_print("calling gst_aftypes_type_find\n");
+
+  buffer_wrap->buffer = buf;
+  buffer_wrap->offset = 0;
+
+  vfile = af_virtual_file_new();
+  vfile->closure = buffer_wrap;
+  vfile->read = gst_aftypes_vf_read;
+  vfile->length = gst_aftypes_vf_length;
+  vfile->write = gst_aftypes_vf_write;
+  vfile->destroy = gst_aftypes_vf_destroy;
+  vfile->seek = gst_aftypes_vf_seek;
+  vfile->tell = gst_aftypes_vf_tell;
+  
+  file = afOpenVirtualFile (vfile, "r", AF_NULL_FILESETUP);
+  file_format = afGetFileFormat (file, &format_version);
+  afCloseFile (file);
+
+  g_print("file format: %d\n", file_format);
+
+  /* reject raw data, just in case it is some other format */
+  if (file_format == AF_FILE_UNKNOWN ||
+      file_format == AF_FILE_RAWDATA){
+    return NULL;
+  }
+
+  return gst_caps_new ("audiofile_type_find", "audio/audiofile", NULL);
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+  gint i=0;
+ 
+  while (aftype_definitions[i].name) {
+    GstTypeFactory *type;
+
+    type = gst_type_factory_new (&aftype_definitions[i]);
+    gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
+    i++;
+  }
+    
+  return TRUE;
+}
+
+
+GstPluginDesc plugin_desc = {
+  GST_VERSION_MAJOR,
+  GST_VERSION_MINOR,
+  "aftypes",
+  plugin_init
+};
+
+
+static ssize_t 
+gst_aftypes_vf_read (AFvirtualfile *vfile, void *data, size_t nbytes)
+{
+  GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
+  long bufsize = GST_BUFFER_SIZE(bwrap->buffer);
+  guchar *bytes = GST_BUFFER_DATA(bwrap->buffer);  
+
+  if (bwrap->offset + nbytes > bufsize){
+    nbytes = bufsize;
+  }
+  
+  bytes += bwrap->offset;
+  memcpy(data, bytes, nbytes);
+  bwrap->offset += nbytes;
+  
+  g_print("read %d bytes\n", nbytes);
+
+  return nbytes;
+}
+
+static long 
+gst_aftypes_vf_seek   (AFvirtualfile *vfile, long offset, int is_relative)
+{
+  GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
+  long bufsize = GST_BUFFER_SIZE(bwrap->buffer);
+  
+  g_print("request seek to: %ld\n", offset);
+  if (!is_relative){
+    if (offset > bufsize || offset < 0){
+      return -1;
+    }
+    bwrap->offset = offset;
+  }
+  else {
+    if (bwrap->offset + offset > bufsize || 
+        bwrap->offset + offset < 0){
+      return -1;
+    }
+    bwrap->offset += offset;
+  }
+  
+  g_print("seek to: %ld\n", bwrap->offset);
+  return bwrap->offset;
+}
+
+static long 
+gst_aftypes_vf_length (AFvirtualfile *vfile)
+{
+  GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
+  return GST_BUFFER_SIZE(bwrap->buffer);
+}
+
+static ssize_t 
+gst_aftypes_vf_write (AFvirtualfile *vfile, const void *data, size_t nbytes)
+{
+  g_warning("shouldn't write to a readonly pad");
+  return 0;
+}
+
+static void 
+gst_aftypes_vf_destroy(AFvirtualfile *vfile)
+{
+
+}
+
+static long 
+gst_aftypes_vf_tell   (AFvirtualfile *vfile)
+{
+  GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
+  g_print("doing tell: %ld\n", bwrap->offset);
+  return bwrap->offset;
+}
+
+
+