Add Meson build system

meson.build

@@ -0,0 +1,55 @@
+project(
+  'gst-deepspeech',
+  'cpp',
+  version: '1.4.0',
+  license: 'LGPL-2.0-or-later',
+  meson_version: '>= 0.58',
+)
+
+# Dependencies
+
+cxx = meson.get_compiler('cpp')
+
+gst_min_version = '1.0.0'
+gst_not_found_message = '''
+  You need to install or upgrade the GStreamer development
+  packages on your system. On debian-based systems these are
+  libgstreamer1.0-dev and libgstreamer-plugins-base1.0-dev.
+  on RPM-based systems gstreamer1.0-devel, libgstreamer1.0-devel
+  or similar. The minimum version required is @0@.
+'''.format(gst_min_version)
+
+gstreamer = dependency(
+  'gstreamer-1.0',
+  version: '>= ' + gst_min_version,
+  not_found_message: gst_not_found_message
+)
+gstreamer_base = dependency(
+  'gstreamer-base-1.0',
+  version: '>= ' + gst_min_version,
+  not_found_message: gst_not_found_message
+)
+gstreamer_controller = dependency(
+  'gstreamer-controller-1.0',
+  version: '>= ' + gst_min_version,
+  not_found_message: gst_not_found_message
+)
+gstreamer_audio = dependency(
+  'gstreamer-audio-1.0',
+  version: '>= ' + gst_min_version,
+  not_found_message: gst_not_found_message
+)
+
+stt = cxx.find_library('stt')
+
+# Paths
+
+prefix = get_option('prefix')
+libdir = prefix / get_option('libdir')
+
+plugins_install_dir = gstreamer.get_variable(
+  'pluginsdir',
+  pkgconfig_define: ['libdir', libdir],
+)
+
+subdir('src')

src/Makefile.am

@@ -2,6 +2,6 @@ plugin_LTLIBRARIES = libgstdeepspeech.la
 libgstdeepspeech_la_SOURCES = gstdeepspeech.cc gstdeepspeech.h
 libgstdeepspeech_la_CXXFLAGS = $(GST_CFLAGS)
 libgstdeepspeech_la_LIBADD = $(GST_LIBS)
-libgstdeepspeech_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) -ldeepspeech
+libgstdeepspeech_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) -lstt
 libgstdeepspeech_la_LIBTOOLFLAGS = --tag=disable-static
 noinst_HEADERS = gstdeepspeech.h

src/gstdeepspeech.cc

@@ -60,7 +60,6 @@
 #endif
 
 #include <gst/gst.h>
-#include <deepspeech.h>
 #include <string.h>
 #include <sstream>
 
@@ -132,8 +131,8 @@ gpointer run_model_async(void * instance_data, void * pool_data)
   g_mutex_lock(&mutex);
   void *data = malloc(sizeof(short) * info.size);
   memcpy(data, info.data, info.size);
-  DS_FeedAudioContent(deepspeech->streaming_state, (const short *) data, (unsigned int) info.size);
-  result = DS_IntermediateDecode(deepspeech->streaming_state);
+  STT_FeedAudioContent(deepspeech->streaming_state, (const short *) data, (unsigned int) info.size);
+  result = STT_IntermediateDecode(deepspeech->streaming_state);
   g_mutex_unlock(&mutex);
 
   if (strlen(result) > 0) {
@@ -154,8 +153,8 @@ void process_final_text(GstDeepSpeech * deepspeech, GstBuffer *buf) {
   gst_buffer_map(buf, &info, GST_MAP_READ);
   void *data = malloc(sizeof(short) * info.size);
   memcpy(data, info.data, info.size);
-  DS_FeedAudioContent(deepspeech->streaming_state, (const short *) data, (unsigned int) info.size);
-  result = DS_FinishStream(deepspeech->streaming_state);
+  STT_FeedAudioContent(deepspeech->streaming_state, (const short *) data, (unsigned int) info.size);
+  result = STT_FinishStream(deepspeech->streaming_state);
 
   if (strlen(result) > 0) {
     GstMessage *msg = gst_deepspeech_message_new (deepspeech, buf, result, false);
@@ -249,21 +248,21 @@ gst_deepspeech_init (GstDeepSpeech * deepspeech)
 static void
 gst_deepspeech_load_model (GstDeepSpeech * deepspeech)
 {
-  int status = DS_CreateModel(deepspeech->speech_model_path, &deepspeech->model_state);
+  int status = STT_CreateModel(deepspeech->speech_model_path, &deepspeech->model_state);
   if (status != 0) {
     fprintf(stderr, "Could not create model.\n");
     return;
   }
 
-  DS_SetModelBeamWidth(deepspeech->model_state, DEFAULT_BEAM_WIDTH);
+  STT_SetModelBeamWidth(deepspeech->model_state, DEFAULT_BEAM_WIDTH);
 
-  status = DS_EnableExternalScorer(deepspeech->model_state, deepspeech->scorer_path); 
+  status = STT_EnableExternalScorer(deepspeech->model_state, deepspeech->scorer_path); 
   if (status != 0) {
     fprintf(stderr, "Could not enable scorer.\n");
     return;
   }
 
-  status = DS_CreateStream(deepspeech->model_state, &deepspeech->streaming_state);
+  status = STT_CreateStream(deepspeech->model_state, &deepspeech->streaming_state);
   if (status != 0) {
     fprintf(stderr, "Could not create stream.\n");
     return;

src/gstdeepspeech.h

@@ -46,7 +46,7 @@
 
 #include <gst/gst.h>
 #include <gst/base/gstbasetransform.h>
-#include "deepspeech.h"
+#include <coqui-stt.h>
 
 G_BEGIN_DECLS
 

src/meson.build

@@ -0,0 +1,28 @@
+cdata = configuration_data()
+cdata.set_quoted('VERSION', meson.project_version())
+cdata.set_quoted('PACKAGE', meson.project_name())
+
+config_h = configure_file(
+  output: 'config.h',
+  configuration: cdata,
+)
+
+libgstdeepspeech = shared_library(
+  'gstdeepspeech',
+  sources: [
+    'gstdeepspeech.cc',
+    config_h,
+  ],
+  cpp_args: [
+    '-DHAVE_CONFIG_H',
+  ],
+  dependencies: [
+    gstreamer,
+    gstreamer_base,
+    gstreamer_controller,
+    gstreamer_audio,
+    stt,
+  ],
+  install: true,
+  install_dir: plugins_install_dir,
+)