2002-04-24 10:19:41 +00:00
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/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstaftypes.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gst/gst.h>
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#include <string.h>
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#include <audiofile.h>
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#include <af_vfs.h>
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static ssize_t gst_aftypes_vf_read (AFvirtualfile *vfile, void *data, size_t nbytes);
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static long gst_aftypes_vf_length (AFvirtualfile *vfile);
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static ssize_t gst_aftypes_vf_write (AFvirtualfile *vfile, const void *data, size_t nbytes);
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static void gst_aftypes_vf_destroy(AFvirtualfile *vfile);
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static long gst_aftypes_vf_seek (AFvirtualfile *vfile, long offset, int is_relative);
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static long gst_aftypes_vf_tell (AFvirtualfile *vfile);
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static GstCaps* gst_aftypes_type_find(GstBuffer *buf, gpointer private);
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static GstTypeDefinition aftype_definitions[] = {
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2002-04-26 12:42:32 +00:00
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{ "aftypes audio/x-aiff", "audio/x-aiff", ".aiff .aif .aifc", gst_aftypes_type_find },
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{ "aftypes audio/x-wav", "audio/x-wav", ".wav", gst_aftypes_type_find },
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{ "aftypes audio/basic", "audio/basic", ".au .snd", gst_aftypes_type_find },
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2002-04-24 10:19:41 +00:00
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{ NULL, NULL, NULL, NULL },
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};
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typedef struct _GstAFTypesBuffer GstAFTypesBuffer;
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struct _GstAFTypesBuffer {
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GstBuffer *buffer;
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long offset;
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};
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static GstCaps*
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gst_aftypes_type_find(GstBuffer *buf, gpointer private)
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{
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GstAFTypesBuffer *buffer_wrap = g_new0(GstAFTypesBuffer, 1);
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AFvirtualfile *vfile;
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AFfilehandle file;
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int file_format, format_version;
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2002-04-26 12:42:32 +00:00
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gchar *type;
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2002-04-24 10:19:41 +00:00
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g_print("calling gst_aftypes_type_find\n");
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buffer_wrap->buffer = buf;
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buffer_wrap->offset = 0;
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vfile = af_virtual_file_new();
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vfile->closure = buffer_wrap;
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vfile->read = gst_aftypes_vf_read;
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vfile->length = gst_aftypes_vf_length;
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vfile->write = gst_aftypes_vf_write;
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vfile->destroy = gst_aftypes_vf_destroy;
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vfile->seek = gst_aftypes_vf_seek;
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vfile->tell = gst_aftypes_vf_tell;
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file = afOpenVirtualFile (vfile, "r", AF_NULL_FILESETUP);
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file_format = afGetFileFormat (file, &format_version);
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afCloseFile (file);
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g_print("file format: %d\n", file_format);
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/* reject raw data, just in case it is some other format */
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if (file_format == AF_FILE_UNKNOWN ||
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file_format == AF_FILE_RAWDATA){
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return NULL;
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}
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2002-04-26 12:42:32 +00:00
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switch (file_format){
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case AF_FILE_AIFF:
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case AF_FILE_AIFFC:
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type = "audio/x-aiff";
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break;
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case AF_FILE_WAVE:
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type = "audio/x-wav";
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break;
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case AF_FILE_NEXTSND:
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type = "audio/basic";
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break;
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default:
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type=NULL;
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break;
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}
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if (type != NULL){
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return gst_caps_new ("audiofile_type_find", type, NULL);
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}
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2002-04-24 10:19:41 +00:00
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2002-04-26 12:42:32 +00:00
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return NULL;
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2002-04-24 10:19:41 +00:00
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}
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static gboolean
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plugin_init (GModule *module, GstPlugin *plugin)
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{
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gint i=0;
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while (aftype_definitions[i].name) {
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GstTypeFactory *type;
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type = gst_type_factory_new (&aftype_definitions[i]);
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
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i++;
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}
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return TRUE;
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}
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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"aftypes",
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plugin_init
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};
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static ssize_t
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gst_aftypes_vf_read (AFvirtualfile *vfile, void *data, size_t nbytes)
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{
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GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
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long bufsize = GST_BUFFER_SIZE(bwrap->buffer);
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guchar *bytes = GST_BUFFER_DATA(bwrap->buffer);
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if (bwrap->offset + nbytes > bufsize){
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nbytes = bufsize;
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}
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bytes += bwrap->offset;
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memcpy(data, bytes, nbytes);
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bwrap->offset += nbytes;
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g_print("read %d bytes\n", nbytes);
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return nbytes;
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}
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static long
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gst_aftypes_vf_seek (AFvirtualfile *vfile, long offset, int is_relative)
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{
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GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
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long bufsize = GST_BUFFER_SIZE(bwrap->buffer);
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g_print("request seek to: %ld\n", offset);
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if (!is_relative){
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if (offset > bufsize || offset < 0){
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return -1;
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}
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bwrap->offset = offset;
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}
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else {
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if (bwrap->offset + offset > bufsize ||
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bwrap->offset + offset < 0){
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return -1;
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}
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bwrap->offset += offset;
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}
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g_print("seek to: %ld\n", bwrap->offset);
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return bwrap->offset;
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}
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static long
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gst_aftypes_vf_length (AFvirtualfile *vfile)
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{
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GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
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return GST_BUFFER_SIZE(bwrap->buffer);
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}
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static ssize_t
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gst_aftypes_vf_write (AFvirtualfile *vfile, const void *data, size_t nbytes)
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{
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g_warning("shouldn't write to a readonly pad");
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return 0;
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}
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static void
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gst_aftypes_vf_destroy(AFvirtualfile *vfile)
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{
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}
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static long
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gst_aftypes_vf_tell (AFvirtualfile *vfile)
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{
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GstAFTypesBuffer *bwrap = (GstAFTypesBuffer*)vfile->closure;
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g_print("doing tell: %ld\n", bwrap->offset);
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return bwrap->offset;
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}
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