err.no Git - mapper/blob - src/speak.c

   1 /*
   2  * This file is part of mapper
   3  *
   4  * Copyright (C) 2007 Kaj-Michael Lang
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <string.h>
  24 #include <glib.h>
  25 #include <glib/gstdio.h>
  26
  27 #if defined (WITH_GST) && defined (WITH_ESPEAK)
  28
  29 #include <gst/gst.h>
  30 #include <gst/app/gstappsrc.h>
  31 #include <gst/app/gstappbuffer.h>
  32 #include <gst/app/gstappsink.h>
  33 #include <espeak/speak_lib.h>
  34
  35 #include "audio.h"
  36 #include "speak.h"
  37
  38 typedef struct _gst_espeak gst_espeak;
  39 struct _gst_espeak {
  40         GstCaps *srccaps;
  41         GstElement *pipeline;
  42         GstElement *src;
  43         GstElement *queue;
  44         GstElement *sink;
  45         gboolean done;
  46         gshort  *buffer;
  47         gint size;
  48 };
  49 static gst_espeak ge;
  50
  51 static gint erate;
  52 static GstBus *bus;
  53 static gboolean speaking=FALSE;
  54 static gboolean speak_ok;
  55 static gboolean espeak_ok;
  56
  57 static gboolean
  58 bus_call (GstBus *bus, GstMessage *msg, gpointer data)
  59 {
  60 gchar *debug;
  61 GError *err;
  62
  63 switch (GST_MESSAGE_TYPE (msg)) {
  64         case GST_MESSAGE_EOS:
  65         g_print ("EOS\n");
  66                 speaking=FALSE;
  67                 speak_ok=TRUE;
  68                 speak_stop();
  69         break;
  70         case GST_MESSAGE_ERROR:
  71                 gst_message_parse_error (msg, &err, &debug);
  72                 g_free (debug);
  73
  74                 g_debug("Error: %s", err->message);
  75                 g_error_free (err);
  76
  77                 speak_stop();
  78                 speaking=FALSE;
  79                 speak_ok=FALSE;
  80         break;
  81         case GST_MESSAGE_STATE_CHANGED:
  82         g_debug("GST: state changed");
  83         break;
  84     default:
  85                 g_debug("GST: %s", gst_message_type_get_name(GST_MESSAGE_TYPE(msg)));
  86         break;
  87         }
  88 return TRUE;
  89 }
  90
  91 static gboolean
  92 speak_create_pipeline(void)
  93 {
  94 ge.pipeline=gst_pipeline_new("pipeline");
  95 g_assert(ge.pipeline);
  96
  97 ge.src=gst_element_factory_make("appsrc", "source");
  98 g_assert(ge.src);
  99
 100 ge.srccaps=gst_caps_new_simple ("audio/x-raw-int",
 101                         "depth", G_TYPE_INT, 16,
 102                         "signed", G_TYPE_BOOLEAN, TRUE,
 103                         "width", G_TYPE_INT,  16,
 104                         "rate", G_TYPE_INT, erate,
 105                         "channels", G_TYPE_INT, 1,
 106                         NULL);
 107 g_assert(ge.srccaps);
 108
 109 ge.queue=gst_element_factory_make("queue", "queue");
 110 g_assert(ge.queue);
 111
 112 ge.sink=gst_element_factory_make(AUDIO_SINK, "sink");
 113 g_assert(ge.sink);
 114
 115 gst_bin_add_many (GST_BIN(ge.pipeline), ge.src, ge.queue, ge.sink, NULL);
 116
 117 if (!gst_element_link_filtered(ge.src, ge.queue, ge.srccaps)) {
 118         g_warning ("Failed to link source to queue with caps.");
 119         return FALSE;
 120 }
 121 gst_caps_unref(ge.srccaps);
 122
 123 if (!gst_element_link(ge.queue, ge.sink)) {
 124         g_warning ("Failed to link queue to sink.");
 125         return FALSE;
 126 }
 127
 128 return TRUE;
 129 }
 130
 131 static void
 132 espeak_buffer_free(void *p)
 133 {
 134 g_free(p);
 135 }
 136
 137 static int
 138 espeak_cb(short *wav, int numsamples, espeak_EVENT *events)
 139 {
 140 GstBuffer *buf;
 141 gchar *data;
 142
 143 g_print("Adding buffer %d\n", numsamples);
 144
 145 if (wav==NULL) {
 146         gst_app_src_end_of_stream(GST_APP_SRC (ge.src));
 147         return 0;
 148 } else if (numsamples>0) {
 149         numsamples=numsamples*2;
 150         data=g_memdup(wav, numsamples);
 151         buf=gst_app_buffer_new(data, numsamples, espeak_buffer_free, data);
 152         gst_buffer_set_caps(buf, ge.srccaps);
 153         gst_app_src_push_buffer(GST_APP_SRC (ge.src), buf);
 154 }
 155
 156 return 0;
 157 }
 158
 159 void
 160 speak_set_parameters(guint speed, guint pitch)
 161 {
 162 espeak_SetParameter(espeakRATE, speed, 0);
 163 espeak_SetParameter(espeakPITCH, pitch, 0);
 164 }
 165
 166 gboolean
 167 speak_init(gchar *voice, guint speed, guint pitch)
 168 {
 169 espeak_ok=FALSE;
 170 erate=espeak_Initialize(AUDIO_OUTPUT_RETRIEVAL, 100, NULL, 0);
 171 if (erate==-1)
 172         return FALSE;
 173
 174 espeak_SetSynthCallback(espeak_cb);
 175 espeak_SetVoiceByName(voice);
 176 speak_set_parameters(speed, pitch);
 177 espeak_SetParameter(espeakVOLUME, 100, 0);
 178 if (speak_create_pipeline()==FALSE)
 179         return FALSE;
 180
 181 bus=gst_pipeline_get_bus(GST_PIPELINE (ge.pipeline));
 182 g_assert(bus);
 183 gst_bus_add_watch(bus, bus_call, NULL);
 184
 185 espeak_ok=TRUE;
 186 return TRUE;
 187 }
 188
 189 void
 190 speak_deinit(void)
 191 {
 192 if (espeak_ok==FALSE)
 193         return;
 194
 195 gst_element_set_state(ge.pipeline, GST_STATE_NULL);
 196 gst_object_unref(ge.pipeline);
 197 ge.pipeline=NULL;
 198 speaking=FALSE;
 199 espeak_Terminate();
 200 }
 201
 202 gboolean
 203 speak_text(gchar *text)
 204 {
 205 #if 0
 206 if (speaking==TRUE)
 207         return FALSE;
 208 #endif
 209
 210 g_debug("Speaking: %s (%d)\n", text, strlen(text));
 211 espeak_Synth(text, strlen(text)+1, 0, POS_CHARACTER, 0, espeakCHARS_UTF8, NULL, NULL);
 212
 213 if (speaking!=TRUE) {
 214         if (gst_element_set_state (ge.pipeline, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
 215                 g_print("Failed to play\n");
 216                 speaking=FALSE;
 217                 return FALSE;
 218         }
 219         speaking=TRUE;
 220 }
 221 g_print("Playing...\n");
 222 return TRUE;
 223 }
 224
 225 gboolean
 226 speak_speaking(void)
 227 {
 228 return speaking;
 229 }
 230
 231 gboolean
 232 speak_stop(void)
 233 {
 234 if (gst_element_set_state(ge.pipeline, GST_STATE_NULL) == GST_STATE_CHANGE_FAILURE)
 235     return FALSE;
 236 return TRUE;
 237 }
 238
 239 #else
 240
 241 gboolean speak_init(gchar voice, guint speed, guint pitch) {return TRUE;}
 242 void speak_deinit(void) {}
 243 gboolean speak_stop(void) {return TRUE;}
 244 gboolean speak_speaking(void) {return FALSE;}
 245 void speak_set_parameters(guint speed, guint pitch) {}
 246
 247 gboolean
 248 speak_text(gchar *text)
 249 {
 250 #ifdef WITH_ESPEAK
 251 #define _voice_synth_path "/usr/bin/espeak"
 252 #else
 253 #define _voice_synth_path "/usr/bin/flite"
 254 #endif
 255
 256 if (!fork()) {
 257         /* We are the fork child.  Synthesize the voice. */
 258         sound_noise();
 259         sleep(1);
 260         g_debug("%s %s\n", _voice_synth_path, text);
 261 #ifdef WITH_ESPEAK
 262         execl(_voice_synth_path, _voice_synth_path, "-t", text, (char *)NULL);
 263 #else
 264         execl(_voice_synth_path, _voice_synth_path, "-s", "150", text, (char *)NULL);
 265 #endif
 266         exit(0);
 267 }
 268
 269 return TRUE;
 270 }
 271
 272 #endif