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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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b6a297bf09
Original commit message from CVS: Fixed the mpeg 1 parser. It can now be used to playback the audio stream of an MPEG1 movie (check out test/mp1parse.c).
105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
#include <gst/gst.h>
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extern gboolean _gst_plugin_spew;
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GstPipeline *pipeline;
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void eof(GstSrc *src) {
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g_print("have eof, quitting\n");
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exit(0);
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}
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void mp1parse_info_chain(GstPad *pad,GstBuffer *buf) {
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g_print("sink : got buffer of size %d\n",GST_BUFFER_SIZE(buf));
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gst_buffer_unref(buf);
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}
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void new_pad_created(GstElement *parse, GstPad *pad) {
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GstElementFactory *parsefactory, *decodefactory, *playfactory;
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GstElement *parse_audio, *decode, *play;
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GstPipeline *audio_pipeline;
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g_print("a new pad %s was created\n", gst_pad_get_name(pad));
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// connect to audio pad
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if (strncmp(gst_pad_get_name(pad), "audio_", 6) == 0) {
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parsefactory = gst_elementfactory_find("mp3parse");
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g_return_if_fail(parsefactory != NULL);
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decodefactory = gst_elementfactory_find("mpg123");
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g_return_if_fail(decodefactory != NULL);
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playfactory = gst_elementfactory_find("audiosink");
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g_return_if_fail(playfactory != NULL);
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parse_audio = gst_elementfactory_create(parsefactory,"parse");
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g_return_if_fail(parse_audio != NULL);
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decode = gst_elementfactory_create(decodefactory,"decode");
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g_return_if_fail(decode != NULL);
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play = gst_elementfactory_create(playfactory,"play");
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g_return_if_fail(play != NULL);
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audio_pipeline = gst_pipeline_new("audio_pipeline");
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g_return_if_fail(audio_pipeline != NULL);
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gst_bin_add(GST_BIN(audio_pipeline),GST_ELEMENT(parse_audio));
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gst_bin_add(GST_BIN(audio_pipeline),GST_ELEMENT(decode));
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gst_bin_add(GST_BIN(audio_pipeline),GST_ELEMENT(play));
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gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(audio_pipeline));
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gst_pad_connect(gst_element_get_pad(parse,gst_pad_get_name(pad)),
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gst_element_get_pad(parse_audio,"sink"));
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gst_pad_connect(gst_element_get_pad(parse_audio,"src"),
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gst_element_get_pad(decode,"sink"));
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gst_pad_connect(gst_element_get_pad(decode,"src"),
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gst_element_get_pad(play,"sink"));
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g_print("setting to RUNNING state\n");
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gst_element_set_state(GST_ELEMENT(audio_pipeline),GST_STATE_RUNNING);
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}
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}
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int main(int argc,char *argv[]) {
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GstElementFactory *srcfactory, *parsefactory;
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GstElement *src, *parse;
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g_print("have %d args\n",argc);
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_gst_plugin_spew = TRUE;
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gst_init(&argc,&argv);
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// gst_plugin_load("mp3parse");
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gst_plugin_load_all();
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pipeline = gst_pipeline_new("pipeline");
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g_return_if_fail(pipeline != NULL);
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srcfactory = gst_elementfactory_find("disksrc");
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g_return_if_fail(srcfactory != NULL);
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parsefactory = gst_elementfactory_find("mpeg1parse");
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g_return_if_fail(parsefactory != NULL);
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src = gst_elementfactory_create(srcfactory,"src");
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g_return_if_fail(src != NULL);
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gtk_object_set(GTK_OBJECT(src),"location",argv[1],NULL);
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g_print("should be using file '%s'\n",argv[1]);
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parse = gst_elementfactory_create(parsefactory,"parse");
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g_return_if_fail(parse != NULL);
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gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(src));
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gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(parse));
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gtk_signal_connect(GTK_OBJECT(parse),"new_pad",
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GTK_SIGNAL_FUNC(new_pad_created),NULL);
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gtk_signal_connect(GTK_OBJECT(src),"eos",
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GTK_SIGNAL_FUNC(eof),NULL);
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gst_pad_connect(gst_element_get_pad(src,"src"),
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gst_element_get_pad(parse,"sink"));
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g_print("setting to RUNNING state\n");
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gst_element_set_state(GST_ELEMENT(pipeline),GST_STATE_RUNNING);
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g_print("about to enter loop\n");
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while (1)
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gst_src_push(GST_SRC(src));
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}
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