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gstreamer/gst/festival/gstfestival.c
Benjamin Otte 5bb80c9f53 merge TYPEFIND branch. Major changes: 
Original commit message from CVS:
merge TYPEFIND branch. Major changes:
- totally reworked type(find) system
- all typefind functions are in gst/typefind now
- more typefind functions then before
- some plugins might fail to compile now because I don't have them installed and they
a) require bytestream or
b) haven't had their typefind fixed.
Please fix those plugins and put the typefind functions into gst/typefind if they don't have dependencies
2003-10-28 20:52:41 +00:00

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/* 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.
*/
/*************************************************************************/
/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
/* Copyright (c) 1999 */
/* All Rights Reserved. */
/* */
/* Permission is hereby granted, free of charge, to use and distribute */
/* this software and its documentation without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of this work, and to */
/* permit persons to whom this work is furnished to do so, subject to */
/* the following conditions: */
/* 1. The code must retain the above copyright notice, this list of */
/* conditions and the following disclaimer. */
/* 2. Any modifications must be clearly marked as such. */
/* 3. Original authors' names are not deleted. */
/* 4. The authors' names are not used to endorse or promote products */
/* derived from this software without specific prior written */
/* permission. */
/* */
/* THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK */
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
/* SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE */
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Author : Alan W Black (awb@cstr.ed.ac.uk) */
/* Date : March 1999 */
/*-----------------------------------------------------------------------*/
/* */
/* Client end of Festival server API in C designed specifically for */
/* Galaxy Communicator use though might be of use for other things */
/* */
/* This is a modified version of the standalone client as provided in */
/* festival example code: festival_client.c */
/* */
/*=======================================================================*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "gstfestival.h"
#include <gst/audio/audio.h>
static void gst_festival_class_init (GstFestivalClass *klass);
static void gst_festival_init (GstFestival *festival);
static void gst_festival_chain (GstPad *pad, GstData *_data);
static GstElementStateReturn
gst_festival_change_state (GstElement *element);
static FT_Info* festival_default_info (void);
static char* socket_receive_file_to_buff (int fd,int *size);
static char* client_accept_s_expr (int fd);
/* elementfactory information */
static GstElementDetails gst_festival_details = {
"Festival synthesizer",
"Filter/Audio",
"LGPL",
"Synthesizes plain text into audio",
VERSION,
"Wim Taymans <wim.taymans@chello.be>",
"(C) 2001",
};
GST_PAD_TEMPLATE_FACTORY (sink_template_factory,
"festival_sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"festival_wav",
"text/plain",
NULL
)
)
GST_PAD_TEMPLATE_FACTORY (src_template_factory,
"festival_src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
gst_caps_new (
"festival_raw",
"audio/x-raw-int",
GST_AUDIO_INT_PAD_TEMPLATE_PROPS
)
)
/* Festival signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
/* FILL ME */
};
static GstElementClass *parent_class = NULL;
/*static guint gst_festival_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_festival_get_type (void)
{
static GType festival_type = 0;
if (!festival_type) {
static const GTypeInfo festival_info = {
sizeof(GstFestivalClass),
NULL,
NULL,
(GClassInitFunc) gst_festival_class_init,
NULL,
NULL,
sizeof(GstFestival),
0,
(GInstanceInitFunc) gst_festival_init,
};
festival_type = g_type_register_static (GST_TYPE_ELEMENT, "GstFestival", &festival_info, 0);
}
return festival_type;
}
static void
gst_festival_class_init (GstFestivalClass *klass)
{
GstElementClass *gstelement_class;
gstelement_class = (GstElementClass*) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gstelement_class->change_state = gst_festival_change_state;
}
static void
gst_festival_init (GstFestival *festival)
{
festival->sinkpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (sink_template_factory), "sink");
gst_pad_set_chain_function (festival->sinkpad, gst_festival_chain);
gst_element_add_pad (GST_ELEMENT (festival), festival->sinkpad);
festival->srcpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (src_template_factory), "src");
gst_element_add_pad (GST_ELEMENT (festival), festival->srcpad);
festival->info = festival_default_info();
}
static void
gst_festival_chain (GstPad *pad, GstData *_data)
{
GstBuffer *buf = GST_BUFFER (_data);
gchar *wavefile;
int filesize;
FILE *fd;
char *p;
char ack[4];
int n;
GstFestival *festival;
GstBuffer *outbuf;
glong size;
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_BUFFER_DATA (buf) != NULL);
festival = GST_FESTIVAL (gst_pad_get_parent (pad));
GST_DEBUG ("gst_festival_chain: got buffer in '%s'",
gst_object_get_name (GST_OBJECT (festival)));
fd = fdopen(dup(festival->info->server_fd),"wb");
size = GST_BUFFER_SIZE (buf);
/* Copy text over to server, escaping any quotes */
fprintf(fd,"(tts_textall \"\n");
for (p=GST_BUFFER_DATA(buf); p && (*p != '\0') && size; p++, size--)
{
if ((*p == '"') || (*p == '\\'))
putc('\\',fd);
putc(*p,fd);
}
fprintf(fd,"\" \"%s\")\n",festival->info->text_mode);
fclose(fd);
/* Read back info from server */
/* This assumes only one waveform will come back, also LP is unlikely */
wavefile = NULL;
do {
for (n=0; n < 3; )
n += read(festival->info->server_fd,ack+n,3-n);
ack[3] = '\0';
if (strcmp(ack,"WV\n") == 0) /* receive a waveform */
wavefile = socket_receive_file_to_buff (festival->info->server_fd, &filesize);
else if (strcmp(ack,"LP\n") == 0) /* receive an s-expr */
client_accept_s_expr(festival->info->server_fd);
else if (strcmp(ack,"ER\n") == 0) /* server got an error */
{
fprintf(stderr,"festival_client: server returned error\n");
break;
}
if (wavefile) {
outbuf = gst_buffer_new ();
GST_BUFFER_DATA (outbuf) = wavefile;
GST_BUFFER_SIZE (outbuf) = filesize;
if (!GST_PAD_CAPS (festival->srcpad)) {
gst_pad_try_set_caps (festival->srcpad,
GST_CAPS_NEW (
"festival_src",
"audio/x-raw-int",
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN (TRUE),
"width", GST_PROPS_INT (16),
"depth", GST_PROPS_INT (16),
"rate", GST_PROPS_INT (16000),
"channels", GST_PROPS_INT (1)
));
}
gst_pad_push (festival->srcpad, GST_DATA (outbuf));
wavefile = NULL;
}
} while (strcmp(ack,"OK\n") != 0);
gst_buffer_unref (buf);
}
static FT_Info*
festival_default_info (void)
{
FT_Info *info;
info = (FT_Info *)malloc(1 * sizeof(FT_Info));
info->server_host = FESTIVAL_DEFAULT_SERVER_HOST;
info->server_port = FESTIVAL_DEFAULT_SERVER_PORT;
info->text_mode = FESTIVAL_DEFAULT_TEXT_MODE;
info->server_fd = -1;
return info;
}
static int
festival_socket_open (const char *host, int port)
{
/* Return an FD to a remote server */
struct sockaddr_in serv_addr;
struct hostent *serverhost;
int fd;
fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (fd < 0)
{
fprintf(stderr,"festival_client: can't get socket\n");
return -1;
}
memset(&serv_addr, 0, sizeof(serv_addr));
if ((serv_addr.sin_addr.s_addr = inet_addr(host)) == -1)
{
/* its a name rather than an ipnum */
serverhost = gethostbyname(host);
if (serverhost == (struct hostent *)0)
{
fprintf(stderr,"festival_client: gethostbyname failed\n");
return -1;
}
memmove(&serv_addr.sin_addr,serverhost->h_addr, serverhost->h_length);
}
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(port);
if (connect(fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) != 0)
{
fprintf(stderr,"festival_client: connect to server failed\n");
return -1;
}
return fd;
}
static char*
client_accept_s_expr (int fd)
{
/* Read s-expression from server, as a char * */
char *expr;
int filesize;
expr = socket_receive_file_to_buff(fd,&filesize);
expr[filesize] = '\0';
return expr;
}
static char*
socket_receive_file_to_buff (int fd, int *size)
{
/* Receive file (probably a waveform file) from socket using */
/* Festival key stuff technique, but long winded I know, sorry */
/* but will receive any file without closeing the stream or */
/* using OOB data */
static const char *file_stuff_key = "ft_StUfF_key"; /* must == Festival's key */
char *buff;
int bufflen;
int n,k,i;
char c;
bufflen = 1024;
buff = (char *)malloc(bufflen);
*size=0;
for (k=0; file_stuff_key[k] != '\0';)
{
n = read(fd,&c,1);
if (n==0) break; /* hit stream eof before end of file */
if ((*size)+k+1 >= bufflen) {
/* +1 so you can add a NULL if you want */
bufflen += bufflen/4;
buff = (char *)realloc(buff,bufflen);
}
if (file_stuff_key[k] == c)
k++;
else if ((c == 'X') && (file_stuff_key[k+1] == '\0')) {
/* It looked like the key but wasn't */
for (i=0; i < k; i++,(*size)++)
buff[*size] = file_stuff_key[i];
k=0;
/* omit the stuffed 'X' */
}
else {
for (i=0; i < k; i++,(*size)++)
buff[*size] = file_stuff_key[i];
k=0;
buff[*size] = c;
(*size)++;
}
}
return buff;
}
/***********************************************************************/
/* Public Functions to this API */
/***********************************************************************/
static gboolean
gst_festival_open (GstFestival *festival)
{
/* Open socket to server */
if (festival->info == NULL)
festival->info = festival_default_info();
festival->info->server_fd =
festival_socket_open(festival->info->server_host, festival->info->server_port);
if (festival->info->server_fd == -1)
return FALSE;
return TRUE;
}
static void
gst_festival_close (GstFestival *festival)
{
if (festival->info == NULL)
return;
if (festival->info->server_fd != -1)
close(festival->info->server_fd);
return;
}
static GstElementStateReturn
gst_festival_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_FESTIVAL (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_FESTIVAL_OPEN))
gst_festival_close (GST_FESTIVAL (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_FESTIVAL_OPEN)) {
if (!gst_festival_open (GST_FESTIVAL (element)))
return GST_STATE_FAILURE;
}
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the festival element */
factory = gst_element_factory_new ("festival", GST_TYPE_FESTIVAL,
&gst_festival_details);
g_return_val_if_fail(factory != NULL, FALSE);
/* register src pads */
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,
"festival",
plugin_init
};
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