gstreamer/test/mp1parse.c

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3.4 KiB
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#include <gst/gst.h>
extern gboolean _gst_plugin_spew;
GstPipeline *pipeline;
void eof(GstSrc *src) {
g_print("have eof, quitting\n");
exit(0);
}
void mp1parse_info_chain(GstPad *pad,GstBuffer *buf) {
g_print("sink : got buffer of size %d\n",GST_BUFFER_SIZE(buf));
gst_buffer_unref(buf);
}
void new_pad_created(GstElement *parse, GstPad *pad) {
GstElementFactory *parsefactory, *decodefactory, *playfactory;
GstElement *parse_audio, *decode, *play;
GstPipeline *audio_pipeline;
g_print("a new pad %s was created\n", gst_pad_get_name(pad));
// connect to audio pad
if (strncmp(gst_pad_get_name(pad), "audio_", 6) == 0) {
parsefactory = gst_elementfactory_find("mp3parse");
g_return_if_fail(parsefactory != NULL);
decodefactory = gst_elementfactory_find("mpg123");
g_return_if_fail(decodefactory != NULL);
playfactory = gst_elementfactory_find("audiosink");
g_return_if_fail(playfactory != NULL);
parse_audio = gst_elementfactory_create(parsefactory,"parse");
g_return_if_fail(parse_audio != NULL);
decode = gst_elementfactory_create(decodefactory,"decode");
g_return_if_fail(decode != NULL);
play = gst_elementfactory_create(playfactory,"play");
g_return_if_fail(play != NULL);
audio_pipeline = gst_pipeline_new("audio_pipeline");
g_return_if_fail(audio_pipeline != NULL);
gst_bin_add(GST_BIN(audio_pipeline),GST_ELEMENT(parse_audio));
gst_bin_add(GST_BIN(audio_pipeline),GST_ELEMENT(decode));
gst_bin_add(GST_BIN(audio_pipeline),GST_ELEMENT(play));
gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(audio_pipeline));
gst_pad_connect(gst_element_get_pad(parse,gst_pad_get_name(pad)),
gst_element_get_pad(parse_audio,"sink"));
gst_pad_connect(gst_element_get_pad(parse_audio,"src"),
gst_element_get_pad(decode,"sink"));
gst_pad_connect(gst_element_get_pad(decode,"src"),
gst_element_get_pad(play,"sink"));
g_print("setting to RUNNING state\n");
gst_element_set_state(GST_ELEMENT(audio_pipeline),GST_STATE_RUNNING);
}
}
int main(int argc,char *argv[]) {
GstElementFactory *srcfactory, *parsefactory;
GstElement *src, *parse;
g_print("have %d args\n",argc);
_gst_plugin_spew = TRUE;
gst_init(&argc,&argv);
// gst_plugin_load("mp3parse");
gst_plugin_load_all();
pipeline = gst_pipeline_new("pipeline");
g_return_if_fail(pipeline != NULL);
srcfactory = gst_elementfactory_find("disksrc");
g_return_if_fail(srcfactory != NULL);
parsefactory = gst_elementfactory_find("mpeg1parse");
g_return_if_fail(parsefactory != NULL);
src = gst_elementfactory_create(srcfactory,"src");
g_return_if_fail(src != NULL);
gtk_object_set(GTK_OBJECT(src),"location",argv[1],NULL);
g_print("should be using file '%s'\n",argv[1]);
parse = gst_elementfactory_create(parsefactory,"parse");
g_return_if_fail(parse != NULL);
gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(src));
gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(parse));
gtk_signal_connect(GTK_OBJECT(parse),"new_pad",
GTK_SIGNAL_FUNC(new_pad_created),NULL);
gtk_signal_connect(GTK_OBJECT(src),"eos",
GTK_SIGNAL_FUNC(eof),NULL);
gst_pad_connect(gst_element_get_pad(src,"src"),
gst_element_get_pad(parse,"sink"));
g_print("setting to RUNNING state\n");
gst_element_set_state(GST_ELEMENT(pipeline),GST_STATE_RUNNING);
g_print("about to enter loop\n");
while (1)
gst_src_push(GST_SRC(src));
}