mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-18 05:50:41 +00:00
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <gst/gst.h>
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int main(int argc,char *argv[]) {
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GstPipeline *pipeline;
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GstElement *src,*lame,*sink;
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int bitrate = 128000;
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int fdin = -1;
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int fdout = -1;
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int i;
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gst_init(&argc,&argv);
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for (i=1;i<argc;i++) {
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fprintf(stderr,"arg is %s\n",argv[i]);
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if (argv[i][0] == '-') {
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fprintf(stderr," starts with -\n");
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switch (argv[i][1]) {
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case 'b': bitrate = atoi(argv[++i]);break;
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case 0: {
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if (fdin == -1) fdin = STDIN_FILENO;
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else if (fdout == -1) fdout = STDOUT_FILENO;
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else fprintf(stderr,"unknown argument\n");exit(1);
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break;
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}
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default: fprintf(stderr,"unknown argument\n");exit(1);
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}
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} else {
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fprintf(stderr," probably a filename\n");
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if (fdin == -1) {
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fdin = open(argv[i],O_RDONLY);
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if (fdin <= 0) {
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fprintf(stderr,"can't open file '%s' for read\n",argv[i]);
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exit(1);
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}
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fprintf(stderr," openned file %s for read, fd %d\n",argv[i],fdin);
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} else if (fdout == -1) {
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unlink(argv[i]);
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fdout = open(argv[i],O_CREAT|O_RDWR|O_TRUNC);
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if (fdout <= 0) {
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fprintf(stderr,"can't open file '%s' for write\n",argv[i]);
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exit(1);
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}
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fprintf(stderr," openned file %s for write, fd %d\n",argv[i],fdout);
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} else {
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fprintf(stderr,"unknown argument\n");exit(1);
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}
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}
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}
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pipeline = GST_PIPELINE (gst_pipeline_new("mp3encode"));
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src = gst_elementfactory_make("fdsrc","src");
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g_return_val_if_fail(src != NULL,1);
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g_object_set(G_OBJECT(src),"location",fdin,NULL);
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lame = gst_elementfactory_make("lame","encoder");
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g_return_val_if_fail(lame != NULL,2);
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g_object_set(G_OBJECT(lame),"bitrate",bitrate,NULL);
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sink = gst_elementfactory_make("fdsink","sink");
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g_return_val_if_fail(sink != NULL,3);
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g_object_set(G_OBJECT(src),"fd",fdout,NULL);
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gst_bin_add(GST_BIN(pipeline),src);
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gst_bin_add(GST_BIN(pipeline),lame);
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gst_bin_add(GST_BIN(pipeline),sink);
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gst_element_connect(src,"src",lame,"sink");
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gst_element_connect(lame,"src",sink,"sink");
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gst_element_set_state(GST_ELEMENT(pipeline),GST_STATE_PLAYING);
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if (GST_STATE(src) != GST_STATE_PLAYING) fprintf(stderr,"error: state not set\n");
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for (i=0;i<100;i++) {
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fprintf(stderr,"\n");
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gst_bin_iterate(GST_BIN(pipeline));
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}
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return 0;
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}
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