gstreamer/test/mp3tovorbis.c

#include <gst/gst.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>


void eof(GstElement *src) {
   g_print("have eof, quitting\n");
   exit(0);
}

int main(int argc,char *argv[]) {
  GstElement *pipeline;
  GstElementFactory *srcfactory, *parsefactory, *decodefactory, *encodefactory, *sinkfactory;
  GstElement *src, *parse, *decode, *encode, *sink;
  int fd;

  g_print("have %d args\n",argc);

  gst_init(&argc,&argv);

  pipeline = gst_pipeline_new("pipeline");
  g_return_val_if_fail(pipeline != NULL, -1);

  srcfactory = gst_elementfactory_find("disksrc");
  g_return_val_if_fail(srcfactory != NULL, -1);
  parsefactory = gst_elementfactory_find("mp3parse");
  g_return_val_if_fail(parsefactory != NULL, -1);
  decodefactory = gst_elementfactory_find("mpg123");
  g_return_val_if_fail(decodefactory != NULL, -1);
  encodefactory = gst_elementfactory_find("vorbisenc");
  g_return_val_if_fail(encodefactory != NULL, -1);
  sinkfactory = gst_elementfactory_find("fdsink");
  g_return_val_if_fail(sinkfactory != NULL, -1);
  sink = gst_elementfactory_create(sinkfactory,"sink");

  src = gst_elementfactory_create(srcfactory,"src");
  g_return_val_if_fail(src != NULL, -1);
  g_object_set(G_OBJECT(src),"location",argv[1],NULL);
  g_print("should be using file '%s'\n",argv[1]);
  parse = gst_elementfactory_create(parsefactory,"parse");
  g_return_val_if_fail(parse != NULL, -1);
  decode = gst_elementfactory_create(decodefactory,"decode");
  g_return_val_if_fail(decode != NULL, -1);
  encode = gst_elementfactory_create(encodefactory,"encode");
  g_return_val_if_fail(encode != NULL, -1);
  sink = gst_elementfactory_create(sinkfactory,"sink");
  g_return_val_if_fail(sink != NULL, -1);
  g_print("should be using output file '%s'\n",argv[2]);
  fd = open(argv[2], O_CREAT|O_RDWR|O_TRUNC);
  g_object_set(G_OBJECT(sink),"fd",fd,NULL);

  g_signal_connect(G_OBJECT(src),"eos",
	                       G_CALLBACK(eof),NULL);

  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(src));
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(parse));
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(decode));
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(encode));
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(sink));

  gst_pad_connect(gst_element_get_pad(src,"src"),
                  gst_element_get_pad(parse,"sink"));
  gst_pad_connect(gst_element_get_pad(parse,"src"),
                  gst_element_get_pad(decode,"sink"));
  gst_pad_connect(gst_element_get_pad(decode,"src"),
                  gst_element_get_pad(encode,"sink"));
  gst_pad_connect(gst_element_get_pad(encode,"src"),
                  gst_element_get_pad(sink,"sink"));

  g_print("setting to READY state\n");
  gst_element_set_state(GST_ELEMENT(pipeline),GST_STATE_PLAYING);

  g_print("about to enter loop\n");
  while (1) {
    gst_bin_iterate(GST_BIN(pipeline));
  }
}