int
main (int argc, char *argv[])
{
GstElement *pipeline = NULL;
GError* error = NULL;
FILE* output_file = NULL;
gst_init (&argc,&argv);
if (argc != 3) {
g_print ("usage: %s <gst-launch-like pipeline> <xml file_path>\n", argv[0]);
exit (-1);
}
output_file = fopen (argv[2], "w");
if(!output_file){
g_warning("Error opening file[%s]", argv[2]);
exit (-1);
}
pipeline = gst_parse_launch(argv[1], &error);
if(error)
g_warning("Warning [%s]", error->message);
if(!pipeline){
g_warning("Error building pipeline [%s]", argv[1]);
fclose(output_file);
exit (-1);
}
/* write the bin to a file */
gst_xml_write_file (GST_ELEMENT (pipeline), output_file);
fclose(output_file);
gst_object_unref (GST_OBJECT (pipeline));
exit (0);
}
int main(int argc, char * argv[])
{
GMainLoop *loop;
GstElement *pipeline, *sink, *mux;
GstElement *vsrc[NR_PROG];
GstElement *asrc[NR_PROG];
GstElement *vparse[NR_PROG];
GstElement *vdemux[NR_PROG];
GstElement *aparse[NR_PROG];
GstPad *tl_pad, *pad;
GstStructure *pm;
GstBus *bus;
FILE * xml_of;
gchar vname[][60] = {
"/Users/lyang/src/res/mpts.test/mpts110.mpv",
"/Users/lyang/src/res/mpts.test/mpts120.mpv",
"/Users/lyang/src/res/mpts.test/mpts130.mpv",
"/Users/lyang/src/res/mpts.test/mpts140.mpv",
"/Users/lyang/src/res/mpts.test/mpts150.mpv",
"/Users/lyang/src/res/mpts.test/mpts160.mpv",
"/Users/lyang/src/res/mpts.test/mpts170.mpv"
};
gchar aname[][60] = {
"/Users/lyang/src/res/mpts.test/mpts113.mpa",
"/Users/lyang/src/res/mpts.test/mpts123.mpa",
"/Users/lyang/src/res/mpts.test/mpts133.mpa",
"/Users/lyang/src/res/mpts.test/mpts143.mpa",
"/Users/lyang/src/res/mpts.test/mpts153.mpa",
"/Users/lyang/src/res/mpts.test/mpts163.mpa",
"/Users/lyang/src/res/mpts.test/mpts173.mpa"
};
gchar dest_dir[60];
gchar dest_xml[60];
gint i;
gst_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
pipeline = gst_pipeline_new ("mpeg-ts-muxer");
mux = gst_element_factory_make ("mpegtsmux", "muxer");
sink = gst_element_factory_make ("filesink", "sink");
if (!pipeline || !mux || !sink) {
g_printerr ( "Some element could not be created.\n");
return -1;
}
for(i = 0; i< NR_PROG; i++)
{
vsrc[i] = gst_element_factory_make ("filesrc", NULL);
vdemux[i] = gst_element_factory_make ("mpegpsdemux", NULL);
vparse[i] = gst_element_factory_make ("mpegvideoparse", NULL);
asrc[i] = gst_element_factory_make ("filesrc", NULL);
aparse[i] = gst_element_factory_make ("mp3parse", NULL);
if (!vsrc[i] || !vparse[i] || !vdemux[i] ||!asrc[i] || !aparse[i])
{
g_printerr ( "Some element could not be created. i=%d.\n", i);
return -1;
}
}
/* Setting paths */
for(i = 0; i< NR_PROG; i++)
{
g_object_set (G_OBJECT (vsrc[i]), "location", vname[i], NULL);
g_object_set (G_OBJECT (asrc[i]), "location", aname[i], NULL);
}
sprintf (dest_dir, "/Users/lyang/src/res/mpts.test/mpts_%02d.ts", NR_PROG);
g_object_set (G_OBJECT (sink), "location", dest_dir, NULL);
/* construct the pipeline */
gst_bin_add_many (GST_BIN (pipeline), mux, sink, NULL);
gst_element_link (mux, sink);
for(i = 0; i< NR_PROG; i++)
{
gst_bin_add_many (GST_BIN (pipeline), vsrc[i], vdemux[i], vparse[i],
NULL);
gst_element_link (vsrc[i], vdemux[i]);
g_signal_connect (vdemux[i], "pad-added", G_CALLBACK (on_pad_added),
vparse[i]);
gst_bin_add_many (GST_BIN (pipeline), asrc[i], aparse[i], NULL);
gst_element_link (asrc[i], aparse[i]);
}
/* construct the program map */
pm = gst_structure_empty_new ("program_map");
/* Program 1 */
for(i = 0; i< NR_PROG; i++)
{
/* vparse <-> mux */
tl_pad = gst_element_get_static_pad (vparse[i], "src");
if (tl_pad == NULL) {
g_printerr ("vparse[%d] src pad getting failed.\n", i);
return -1;
}
pad = gst_element_get_compatible_pad (mux, tl_pad, NULL);
gst_pad_link (tl_pad, pad);
gst_structure_set (pm,
gst_pad_get_name(pad), G_TYPE_INT, i, NULL);
gst_object_unref (GST_OBJECT (tl_pad));
gst_object_unref (GST_OBJECT (pad));
/* aparse <-> mux */
tl_pad = gst_element_get_static_pad (aparse[i], "src");
if (tl_pad == NULL) {
g_printerr ("aparse[%d] src pad getting failed.\n", i);
return -1;
}
pad = gst_element_get_compatible_pad (mux, tl_pad, NULL);
gst_pad_link (tl_pad, pad);
gst_structure_set (pm,
gst_pad_get_name(pad), G_TYPE_INT, i, NULL);
gst_object_unref (GST_OBJECT (tl_pad));
gst_object_unref (GST_OBJECT (pad));
}
/* set the program map */
g_object_set (G_OBJECT(mux), "prog-map", pm, NULL);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch (bus, bus_call, loop);
gst_object_unref (bus);
/* Write the pipeline to XML */
sprintf (dest_xml, "/Users/lyang/src/res/mpts.test/mpts_%02d.xml", NR_PROG);
xml_of = fopen (dest_xml, "w");
gst_xml_write_file (GST_ELEMENT (pipeline), xml_of);
g_print ("Now playing: %s\n", dest_dir);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* Run! */
g_print ("Running...\n");
g_main_loop_run (loop);
/* Out of the main loop, clean up nicely */
g_print ("Returned, stopping playback\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
g_print ("Deleting pipeline\n");
gst_object_unref (GST_OBJECT (pipeline));
return 0;
}
int
main (int argc, char *argv[])
{
int i, j;
int num_channels;
char buffer[20];
GList *input_channels; /* structure holding all the input channels */
input_channel_t *channel_in;
GstElement *main_bin;
GstElement *adder;
GstElement *audiosink;
GstPad *pad; /* to request pads for the adder */
gst_init (&argc, &argv);
if (argc == 1) {
g_print ("usage: %s <filename1> <filename2> <...>\n", argv[0]);
exit (-1);
}
num_channels = argc - 1;
/* set up output channel and main bin */
/* create adder */
adder = gst_element_factory_make ("adder", "adderel");
/* create an audio sink */
audiosink = gst_element_factory_make ("esdsink", "play_audio");
/* create main bin */
main_bin = gst_pipeline_new ("bin");
/* link adder and output to bin */
GST_INFO ("main: adding adder to bin");
gst_bin_add (GST_BIN (main_bin), adder);
GST_INFO ("main: adding audiosink to bin");
gst_bin_add (GST_BIN (main_bin), audiosink);
/* link adder and audiosink */
gst_pad_link (gst_element_get_pad (adder, "src"),
gst_element_get_pad (audiosink, "sink"));
/* start looping */
input_channels = NULL;
for (i = 1; i < argc; ++i) {
printf ("Opening channel %d from file %s...\n", i, argv[i]);
channel_in = create_input_channel (i, argv[i]);
input_channels = g_list_append (input_channels, channel_in);
if (i > 1)
gst_element_set_state (main_bin, GST_STATE_PAUSED);
gst_bin_add (GST_BIN (main_bin), channel_in->pipe);
/* request pads and link to adder */
GST_INFO ("requesting pad\n");
pad = gst_element_get_request_pad (adder, "sink%d");
printf ("\tGot new adder sink pad %s\n", gst_pad_get_name (pad));
sprintf (buffer, "channel%d", i);
gst_pad_link (gst_element_get_pad (channel_in->pipe, buffer), pad);
/* register a volume envelope */
printf ("\tregistering volume envelope...\n");
/*
* this is the volenv :
* each song gets a slot of 5 seconds, with a 5 second fadeout
* at the end of that, all audio streams play simultaneously
* at a level ensuring no distortion
* example for three songs :
* song1 : starts at full level, plays 5 seconds, faded out at 10 seconds,
* sleep until 25, fade to end level at 30
* song2 : starts silent, fades in at 5 seconds, full blast at 10 seconds,
* full level until 15, faded out at 20, sleep until 25, fade to end at 30
* song3 : starts muted, fades in from 15, full at 20, until 25, fade to end level
*/
if (i == 1) {
/* first song gets special treatment for end style */
env_register_cp (channel_in->volenv, 0.0, 1.0);
} else {
env_register_cp (channel_in->volenv, 0.0, 0.0000001); /* start muted */
env_register_cp (channel_in->volenv, i * 10.0 - 15.0, 0.0000001); /* start fade in */
env_register_cp (channel_in->volenv, i * 10.0 - 10.0, 1.0);
}
env_register_cp (channel_in->volenv, i * 10.0 - 5.0, 1.0); /* end of full level */
if (i != num_channels) {
env_register_cp (channel_in->volenv, i * 10.0, 0.0000001); /* fade to black */
env_register_cp (channel_in->volenv, num_channels * 10.0 - 5.0, 0.0000001); /* start fade in */
}
env_register_cp (channel_in->volenv, num_channels * 10.0, 1.0 / num_channels); /* to end level */
#ifndef GST_DISABLE_LOADSAVE
gst_xml_write_file (GST_ELEMENT (main_bin), fopen ("mixer.xml", "w"));
#endif
/* start playing */
gst_element_set_state (main_bin, GST_STATE_PLAYING);
/* write out the schedule */
gst_scheduler_show (GST_ELEMENT_SCHEDULER (main_bin));
playing = TRUE;
j = 0;
/*printf ("main: start iterating from 0"); */
while (playing && j < 100) {
/* printf ("main: iterating %d\n", j); */
gst_bin_iterate (GST_BIN (main_bin));
/*fprintf(stderr,"after iterate()\n"); */
++j;
}
}
printf ("main: all the channels are open\n");
while (playing) {
gst_bin_iterate (GST_BIN (main_bin));
/*fprintf(stderr,"after iterate()\n"); */
}
/* stop the bin */
gst_element_set_state (main_bin, GST_STATE_NULL);
while (input_channels) {
destroy_input_channel (input_channels->data);
input_channels = g_list_next (input_channels);
}
g_list_free (input_channels);
gst_object_unref (audiosink);
gst_object_unref (main_bin);
exit (0);
}
input_channel_t *
create_input_channel (int id, char *location)
{
/* create an input channel, reading from location
* return a pointer to the channel
* return NULL if failed
*/
input_channel_t *channel;
char buffer[20]; /* hold the names */
/* GstAutoplug *autoplug;
GstCaps *srccaps; */
GstElement *new_element;
GstElement *decoder;
GST_DEBUG ("c_i_p : creating channel with id %d for file %s", id, location);
/* allocate channel */
channel = (input_channel_t *) malloc (sizeof (input_channel_t));
if (channel == NULL) {
printf ("create_input_channel : could not allocate memory for channel !\n");
return NULL;
}
/* create channel */
GST_DEBUG ("c_i_p : creating pipeline");
sprintf (buffer, "pipeline%d", id);
channel->pipe = gst_bin_new (buffer);
g_assert (channel->pipe != NULL);
/* create elements */
GST_DEBUG ("c_i_p : creating filesrc");
sprintf (buffer, "filesrc%d", id);
channel->filesrc = gst_element_factory_make ("filesrc", buffer);
g_assert (channel->filesrc != NULL);
GST_DEBUG ("c_i_p : setting location");
g_object_set (G_OBJECT (channel->filesrc), "location", location, NULL);
/* add filesrc to the bin before autoplug */
gst_bin_add (GST_BIN (channel->pipe), channel->filesrc);
/* link signal to eos of filesrc */
g_signal_connect (G_OBJECT (channel->filesrc), "eos", G_CALLBACK (eos), NULL);
#ifdef DEBUG
printf ("DEBUG : c_i_p : creating volume envelope\n");
#endif
sprintf (buffer, "volenv%d", id);
channel->volenv = gst_element_factory_make ("volenv", buffer);
g_assert (channel->volenv != NULL);
/* autoplug the pipe */
#ifdef DEBUG
printf ("DEBUG : c_i_p : getting srccaps\n");
#endif
#ifdef WITH_BUG
srccaps = gst_play_type_find (GST_BIN (channel->pipe), channel->filesrc);
#endif
#ifdef WITH_BUG2
{
GstElement *pipeline;
pipeline = gst_pipeline_new ("autoplug_pipeline");
gst_bin_add (GST_BIN (pipeline), channel->pipe);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_bin_remove (GST_BIN (pipeline), channel->pipe);
}
#endif
#ifdef AUTOPLUG
if (!srccaps) {
g_print ("could not autoplug, unknown media type...\n");
exit (-1);
}
#ifdef DEBUG
printf ("DEBUG : c_i_p : creating autoplug\n");
#endif
autoplug = gst_autoplug_factory_make ("static");
g_assert (autoplug != NULL);
#ifdef DEBUG
printf ("DEBUG : c_i_p : autoplugging\n");
#endif
new_element = gst_autoplug_to_caps (autoplug, srccaps,
gst_caps_new ("audio/raw", NULL), NULL);
if (!new_element) {
g_print ("could not autoplug, no suitable codecs found...\n");
exit (-1);
}
#else
new_element = gst_bin_new ("autoplug_bin");
/* static plug, use mad plugin and assume mp3 input */
printf ("using static plugging for input channel\n");
decoder = gst_element_factory_make ("mad", "mpg123");
if (!decoder) {
fprintf (stderr, "Could not get a decoder element !\n");
exit (1);
}
gst_bin_add (GST_BIN (new_element), decoder);
gst_element_add_ghost_pad (new_element,
gst_element_get_pad (decoder, "sink"), "sink");
gst_element_add_ghost_pad (new_element,
gst_element_get_pad (decoder, "src"), "src_00");
#endif
#ifndef GST_DISABLE_LOADSAVE
gst_xml_write_file (GST_ELEMENT (new_element), fopen ("mixer.gst", "w"));
#endif
gst_bin_add (GST_BIN (channel->pipe), channel->volenv);
gst_bin_add (GST_BIN (channel->pipe), new_element);
gst_element_link_pads (channel->filesrc, "src", new_element, "sink");
gst_element_link_pads (new_element, "src_00", channel->volenv, "sink");
/* add a ghost pad */
sprintf (buffer, "channel%d", id);
gst_element_add_ghost_pad (channel->pipe,
gst_element_get_pad (channel->volenv, "src"), buffer);
#ifdef DEBUG
printf ("DEBUG : c_i_p : end function\n");
#endif
return channel;
}
