changed mixer to work by autoplugging the input channels (not very useful yet, since the input buffers to volenv have...

Original commit message from CVS:
changed mixer to work by autoplugging the input channels
(not very useful yet, since the input buffers to volenv have different
sizes)
This commit is contained in:
Thomas Vander Stichele 2001-04-17 21:17:55 +00:00
parent 6bd5dcffab
commit 7c5e80c383
4 changed files with 288 additions and 106 deletions

View file

@ -2,12 +2,12 @@
#include <gst/gst.h> #include <gst/gst.h>
#include "mixer.h" #include "mixer.h"
#define DEBUG //#define DEBUG
/* function prototypes */ /* function prototypes */
input_pipe_t* create_input_pipe (int id, char* location); input_channel_t* create_input_channel (int id, char* location);
void destroy_input_pipe (input_pipe_t *pipe); void destroy_input_channel (input_channel_t *pipe);
gboolean playing; gboolean playing;
@ -24,10 +24,55 @@ void eos(GstElement *element)
playing = FALSE; playing = FALSE;
} }
static void
gst_play_have_type (GstElement *sink, GstElement *sink2, gpointer data)
{
GST_DEBUG (0,"GstPipeline: play have type %p\n", (gboolean *)data);
*(gboolean *)data = TRUE;
}
static GstCaps*
gst_play_typefind (GstBin *bin, GstElement *element)
{
gboolean found = FALSE;
GstElement *typefind;
GstCaps *caps = NULL;
GST_DEBUG (0,"GstPipeline: typefind for element \"%s\" %p\n",
GST_ELEMENT_NAME(element), &found);
typefind = gst_elementfactory_make ("typefind", "typefind");
g_return_val_if_fail (typefind != NULL, FALSE);
gtk_signal_connect (GTK_OBJECT (typefind), "have_type",
GTK_SIGNAL_FUNC (gst_play_have_type), &found);
gst_pad_connect (gst_element_get_pad (element, "src"),
gst_element_get_pad (typefind, "sink"));
gst_bin_add (bin, typefind);
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
// push a buffer... the have_type signal handler will set the found flag
gst_bin_iterate (bin);
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_NULL);
caps = gst_pad_get_caps (gst_element_get_pad (element, "src"));
gst_pad_disconnect (gst_element_get_pad (element, "src"),
gst_element_get_pad (typefind, "sink"));
gst_bin_remove (bin, typefind);
gst_object_unref (GST_OBJECT (typefind));
return caps;
}
int main(int argc,char *argv[]) int main(int argc,char *argv[])
{ {
input_pipe_t *channel_in1; input_channel_t *channel_in1;
input_pipe_t *channel_in2; input_channel_t *channel_in2;
GstElement *main_bin; GstElement *main_bin;
GstElement *adder; GstElement *adder;
@ -44,8 +89,8 @@ int main(int argc,char *argv[])
/* create input channels */ /* create input channels */
channel_in1 = create_input_pipe (1, argv[1]); channel_in1 = create_input_channel (1, argv[1]);
channel_in2 = create_input_pipe (2, argv[2]); channel_in2 = create_input_channel (2, argv[2]);
/* create adder */ /* create adder */
@ -102,8 +147,8 @@ int main(int argc,char *argv[])
/* stop the bin */ /* stop the bin */
gst_element_set_state(main_bin, GST_STATE_NULL); gst_element_set_state(main_bin, GST_STATE_NULL);
destroy_input_pipe (channel_in1); destroy_input_channel (channel_in1);
destroy_input_pipe (channel_in2); destroy_input_channel (channel_in2);
gst_object_destroy(GST_OBJECT(audiosink)); gst_object_destroy(GST_OBJECT(audiosink));
@ -112,77 +157,128 @@ int main(int argc,char *argv[])
exit(0); exit(0);
} }
input_pipe_t* input_channel_t*
create_input_pipe (int id, char* location) create_input_channel (int id, char* location)
{ {
/* create an input pipeline, reading from location /* create an input channel, reading from location
* return a pointer to the pipe * return a pointer to the channel
* return NULL if failed * return NULL if failed
*/ */
input_pipe_t *pipe; input_channel_t *channel;
char buffer[20]; /* hold the names */ char buffer[20]; /* hold the names */
GstAutoplug *autoplug;
GstCaps *srccaps;
GstElement *new_element;
#ifdef DEBUG #ifdef DEBUG
printf ("DEBUG : c_i_p : creating pipe with id %d for file %s\n", printf ("DEBUG : c_i_p : creating channel with id %d for file %s\n",
id, location); id, location);
#endif #endif
/* allocate pipe */ /* allocate channel */
pipe = (input_pipe_t *) malloc (sizeof (input_pipe_t)); channel = (input_channel_t *) malloc (sizeof (input_channel_t));
if (pipe == NULL) if (channel == NULL)
{ {
printf ("create_input_pipe : could not allocate memory for pipe !\n"); printf ("create_input_channel : could not allocate memory for channel !\n");
return NULL; return NULL;
} }
/* create pipe */ /* create channel */
pipe->pipe = gst_bin_new ("pipeline"); #ifdef DEBUG
printf ("DEBUG : c_i_p : creating pipeline\n");
#endif
channel->pipe = gst_bin_new ("pipeline");
g_assert(channel->pipe != NULL);
/* create elements */ /* create elements */
#ifdef DEBUG
printf ("DEBUG : c_i_p : creating disksrc\n");
#endif
sprintf (buffer, "disksrc%d", id); sprintf (buffer, "disksrc%d", id);
pipe->disksrc = gst_elementfactory_make ("disksrc", buffer); channel->disksrc = gst_elementfactory_make ("disksrc", buffer);
gtk_object_set(GTK_OBJECT(pipe->disksrc),"location", location, NULL); g_assert(channel->disksrc != NULL);
gtk_object_set(GTK_OBJECT(channel->disksrc),"location", location, NULL);
/* add disksrc to the bin before autoplug */
gst_bin_add(GST_BIN(channel->pipe), channel->disksrc);
/* gtk_signal_connect(GTK_OBJECT(disksrc1),"eos", /* gtk_signal_connect(GTK_OBJECT(disksrc1),"eos",
GTK_SIGNAL_FUNC(eos),NULL); GTK_SIGNAL_FUNC(eos),NULL);
*/ */
sprintf (buffer, "decoder%d", id);
pipe->decoder = gst_elementfactory_make("mad", buffer);
sprintf (buffer, "volume%d", id);
pipe->volenv = gst_elementfactory_make("volenv", buffer);
gst_bin_add(GST_BIN(pipe->pipe), pipe->disksrc); #ifdef DEBUG
gst_bin_add(GST_BIN(pipe->pipe), pipe->decoder); printf ("DEBUG : c_i_p : creating volume envelope\n");
gst_bin_add(GST_BIN(pipe->pipe), pipe->volenv); #endif
/* connect elements */ sprintf (buffer, "volenv%d", id);
channel->volenv = gst_elementfactory_make ("volenv", buffer);
g_assert(channel->volenv != NULL);
gst_pad_connect(gst_element_get_pad(pipe->disksrc,"src"), /* autoplug the pipe */
gst_element_get_pad(pipe->decoder,"sink"));
gst_pad_connect(gst_element_get_pad(pipe->decoder,"src"), #ifdef DEBUG
gst_element_get_pad(pipe->volenv,"sink")); printf ("DEBUG : c_i_p : getting srccaps\n");
#endif
srccaps = gst_play_typefind (GST_BIN (channel->pipe), channel->disksrc);
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_autoplugfactory_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", "audio/raw", NULL), NULL);
if (!new_element) {
g_print ("could not autoplug, no suitable codecs found...\n");
exit (-1);
}
gst_bin_add(GST_BIN(channel->pipe), channel->volenv);
gst_bin_add (GST_BIN (channel->pipe), new_element);
gst_element_connect (channel->disksrc, "src", new_element, "sink");
gst_element_connect (new_element, "src_00", channel->volenv, "sink");
/* add a ghost pad */ /* add a ghost pad */
sprintf (buffer, "channel%d", id); sprintf (buffer, "channel%d", id);
gst_element_add_ghost_pad (pipe->pipe, gst_element_add_ghost_pad (channel->pipe,
gst_element_get_pad (pipe->volenv, "src"), buffer); gst_element_get_pad (channel->volenv, "src"), buffer);
#ifdef DEBUG #ifdef DEBUG
printf ("DEBUG : c_i_p : end function\n"); printf ("DEBUG : c_i_p : end function\n");
#endif #endif
return pipe; return channel;
} }
void void
destroy_input_pipe (input_pipe_t *pipe) destroy_input_channel (input_channel_t *channel)
{ {
/* /*
* destroy an input pipeline * destroy an input channel
*/ */
#ifdef DEBUG #ifdef DEBUG
@ -191,13 +287,9 @@ destroy_input_pipe (input_pipe_t *pipe)
/* destroy elements */ /* destroy elements */
gst_object_destroy (GST_OBJECT (pipe->disksrc)); gst_object_destroy (GST_OBJECT (channel->pipe));
gst_object_destroy (GST_OBJECT (pipe->decoder));
gst_object_destroy (GST_OBJECT (pipe->volenv));
gst_object_destroy (GST_OBJECT (pipe->pipe)); free (channel);
free (pipe);
} }

View file

@ -5,9 +5,8 @@
typedef struct typedef struct
{ {
GstElement *pipe; GstElement *pipe, *disksrc, *volenv;
GstElement *disksrc; char *location;
GstElement *decoder; int channel_id;
GstElement *volenv; } input_channel_t;
} input_pipe_t;

View file

@ -2,12 +2,12 @@
#include <gst/gst.h> #include <gst/gst.h>
#include "mixer.h" #include "mixer.h"
#define DEBUG //#define DEBUG
/* function prototypes */ /* function prototypes */
input_pipe_t* create_input_pipe (int id, char* location); input_channel_t* create_input_channel (int id, char* location);
void destroy_input_pipe (input_pipe_t *pipe); void destroy_input_channel (input_channel_t *pipe);
gboolean playing; gboolean playing;
@ -24,10 +24,55 @@ void eos(GstElement *element)
playing = FALSE; playing = FALSE;
} }
static void
gst_play_have_type (GstElement *sink, GstElement *sink2, gpointer data)
{
GST_DEBUG (0,"GstPipeline: play have type %p\n", (gboolean *)data);
*(gboolean *)data = TRUE;
}
static GstCaps*
gst_play_typefind (GstBin *bin, GstElement *element)
{
gboolean found = FALSE;
GstElement *typefind;
GstCaps *caps = NULL;
GST_DEBUG (0,"GstPipeline: typefind for element \"%s\" %p\n",
GST_ELEMENT_NAME(element), &found);
typefind = gst_elementfactory_make ("typefind", "typefind");
g_return_val_if_fail (typefind != NULL, FALSE);
gtk_signal_connect (GTK_OBJECT (typefind), "have_type",
GTK_SIGNAL_FUNC (gst_play_have_type), &found);
gst_pad_connect (gst_element_get_pad (element, "src"),
gst_element_get_pad (typefind, "sink"));
gst_bin_add (bin, typefind);
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
// push a buffer... the have_type signal handler will set the found flag
gst_bin_iterate (bin);
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_NULL);
caps = gst_pad_get_caps (gst_element_get_pad (element, "src"));
gst_pad_disconnect (gst_element_get_pad (element, "src"),
gst_element_get_pad (typefind, "sink"));
gst_bin_remove (bin, typefind);
gst_object_unref (GST_OBJECT (typefind));
return caps;
}
int main(int argc,char *argv[]) int main(int argc,char *argv[])
{ {
input_pipe_t *channel_in1; input_channel_t *channel_in1;
input_pipe_t *channel_in2; input_channel_t *channel_in2;
GstElement *main_bin; GstElement *main_bin;
GstElement *adder; GstElement *adder;
@ -44,8 +89,8 @@ int main(int argc,char *argv[])
/* create input channels */ /* create input channels */
channel_in1 = create_input_pipe (1, argv[1]); channel_in1 = create_input_channel (1, argv[1]);
channel_in2 = create_input_pipe (2, argv[2]); channel_in2 = create_input_channel (2, argv[2]);
/* create adder */ /* create adder */
@ -102,8 +147,8 @@ int main(int argc,char *argv[])
/* stop the bin */ /* stop the bin */
gst_element_set_state(main_bin, GST_STATE_NULL); gst_element_set_state(main_bin, GST_STATE_NULL);
destroy_input_pipe (channel_in1); destroy_input_channel (channel_in1);
destroy_input_pipe (channel_in2); destroy_input_channel (channel_in2);
gst_object_destroy(GST_OBJECT(audiosink)); gst_object_destroy(GST_OBJECT(audiosink));
@ -112,77 +157,128 @@ int main(int argc,char *argv[])
exit(0); exit(0);
} }
input_pipe_t* input_channel_t*
create_input_pipe (int id, char* location) create_input_channel (int id, char* location)
{ {
/* create an input pipeline, reading from location /* create an input channel, reading from location
* return a pointer to the pipe * return a pointer to the channel
* return NULL if failed * return NULL if failed
*/ */
input_pipe_t *pipe; input_channel_t *channel;
char buffer[20]; /* hold the names */ char buffer[20]; /* hold the names */
GstAutoplug *autoplug;
GstCaps *srccaps;
GstElement *new_element;
#ifdef DEBUG #ifdef DEBUG
printf ("DEBUG : c_i_p : creating pipe with id %d for file %s\n", printf ("DEBUG : c_i_p : creating channel with id %d for file %s\n",
id, location); id, location);
#endif #endif
/* allocate pipe */ /* allocate channel */
pipe = (input_pipe_t *) malloc (sizeof (input_pipe_t)); channel = (input_channel_t *) malloc (sizeof (input_channel_t));
if (pipe == NULL) if (channel == NULL)
{ {
printf ("create_input_pipe : could not allocate memory for pipe !\n"); printf ("create_input_channel : could not allocate memory for channel !\n");
return NULL; return NULL;
} }
/* create pipe */ /* create channel */
pipe->pipe = gst_bin_new ("pipeline"); #ifdef DEBUG
printf ("DEBUG : c_i_p : creating pipeline\n");
#endif
channel->pipe = gst_bin_new ("pipeline");
g_assert(channel->pipe != NULL);
/* create elements */ /* create elements */
#ifdef DEBUG
printf ("DEBUG : c_i_p : creating disksrc\n");
#endif
sprintf (buffer, "disksrc%d", id); sprintf (buffer, "disksrc%d", id);
pipe->disksrc = gst_elementfactory_make ("disksrc", buffer); channel->disksrc = gst_elementfactory_make ("disksrc", buffer);
gtk_object_set(GTK_OBJECT(pipe->disksrc),"location", location, NULL); g_assert(channel->disksrc != NULL);
gtk_object_set(GTK_OBJECT(channel->disksrc),"location", location, NULL);
/* add disksrc to the bin before autoplug */
gst_bin_add(GST_BIN(channel->pipe), channel->disksrc);
/* gtk_signal_connect(GTK_OBJECT(disksrc1),"eos", /* gtk_signal_connect(GTK_OBJECT(disksrc1),"eos",
GTK_SIGNAL_FUNC(eos),NULL); GTK_SIGNAL_FUNC(eos),NULL);
*/ */
sprintf (buffer, "decoder%d", id);
pipe->decoder = gst_elementfactory_make("mad", buffer);
sprintf (buffer, "volume%d", id);
pipe->volenv = gst_elementfactory_make("volenv", buffer);
gst_bin_add(GST_BIN(pipe->pipe), pipe->disksrc); #ifdef DEBUG
gst_bin_add(GST_BIN(pipe->pipe), pipe->decoder); printf ("DEBUG : c_i_p : creating volume envelope\n");
gst_bin_add(GST_BIN(pipe->pipe), pipe->volenv); #endif
/* connect elements */ sprintf (buffer, "volenv%d", id);
channel->volenv = gst_elementfactory_make ("volenv", buffer);
g_assert(channel->volenv != NULL);
gst_pad_connect(gst_element_get_pad(pipe->disksrc,"src"), /* autoplug the pipe */
gst_element_get_pad(pipe->decoder,"sink"));
gst_pad_connect(gst_element_get_pad(pipe->decoder,"src"), #ifdef DEBUG
gst_element_get_pad(pipe->volenv,"sink")); printf ("DEBUG : c_i_p : getting srccaps\n");
#endif
srccaps = gst_play_typefind (GST_BIN (channel->pipe), channel->disksrc);
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_autoplugfactory_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", "audio/raw", NULL), NULL);
if (!new_element) {
g_print ("could not autoplug, no suitable codecs found...\n");
exit (-1);
}
gst_bin_add(GST_BIN(channel->pipe), channel->volenv);
gst_bin_add (GST_BIN (channel->pipe), new_element);
gst_element_connect (channel->disksrc, "src", new_element, "sink");
gst_element_connect (new_element, "src_00", channel->volenv, "sink");
/* add a ghost pad */ /* add a ghost pad */
sprintf (buffer, "channel%d", id); sprintf (buffer, "channel%d", id);
gst_element_add_ghost_pad (pipe->pipe, gst_element_add_ghost_pad (channel->pipe,
gst_element_get_pad (pipe->volenv, "src"), buffer); gst_element_get_pad (channel->volenv, "src"), buffer);
#ifdef DEBUG #ifdef DEBUG
printf ("DEBUG : c_i_p : end function\n"); printf ("DEBUG : c_i_p : end function\n");
#endif #endif
return pipe; return channel;
} }
void void
destroy_input_pipe (input_pipe_t *pipe) destroy_input_channel (input_channel_t *channel)
{ {
/* /*
* destroy an input pipeline * destroy an input channel
*/ */
#ifdef DEBUG #ifdef DEBUG
@ -191,13 +287,9 @@ destroy_input_pipe (input_pipe_t *pipe)
/* destroy elements */ /* destroy elements */
gst_object_destroy (GST_OBJECT (pipe->disksrc)); gst_object_destroy (GST_OBJECT (channel->pipe));
gst_object_destroy (GST_OBJECT (pipe->decoder));
gst_object_destroy (GST_OBJECT (pipe->volenv));
gst_object_destroy (GST_OBJECT (pipe->pipe)); free (channel);
free (pipe);
} }

View file

@ -5,9 +5,8 @@
typedef struct typedef struct
{ {
GstElement *pipe; GstElement *pipe, *disksrc, *volenv;
GstElement *disksrc; char *location;
GstElement *decoder; int channel_id;
GstElement *volenv; } input_channel_t;
} input_pipe_t;