gstreamer/testsuite/capsnego/enum.c

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#include <stdlib.h>
#include <gst/gst.h>
GstPad *srcconvpad, *sinkconvpad;
GstPadTemplate *srcconvtempl, *sinkconvtempl;
static GstPadTemplate*
src_conv_factory (void)
{
return
gst_padtemplate_new (
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
gst_caps_new (
"test_src",
"audio/raw",
gst_props_new (
"rate", GST_PROPS_INT_RANGE (16, 20000),
NULL)),
NULL);
}
static GstPadTemplate*
sink_conv_factory (void)
{
return
gst_padtemplate_new (
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
gst_caps_new (
"test_src",
"audio/raw",
gst_props_new (
"rate", GST_PROPS_INT_RANGE (16, 20000),
NULL)),
NULL);
}
static GstCaps*
src_caps (void)
{
return
gst_caps_new (
"src_caps",
"audio/raw",
gst_props_new (
"rate", GST_PROPS_INT (3000),
NULL));
}
static GstCaps *srccaps, *sinkcaps;
static gint src_rate = 140;
static gint sink_rate = 100;
static GstPadNegotiateReturn
negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
{
g_print (">(%d:%d)", src_rate, (*caps)->refcount);
src_rate++;
if (*data == NULL || caps == NULL) {
g_print ("*");
*caps = gst_caps_new (
"src_caps",
"audio/raw",
gst_props_new (
"rate", GST_PROPS_INT (src_rate),
NULL)
);
return GST_PAD_NEGOTIATE_TRY;
}
if (*caps) {
gint in_rate = gst_caps_get_int (*caps, "rate");
g_print ("(%d)", in_rate);
if (in_rate > 140 && in_rate < 300) {
g_print ("A");
return GST_PAD_NEGOTIATE_AGREE;
}
*caps = gst_caps_copy_on_write (*caps);
gst_caps_set (*caps, "rate", GST_PROPS_INT (src_rate));
g_print ("T");
return GST_PAD_NEGOTIATE_TRY;
}
g_print ("F");
return GST_PAD_NEGOTIATE_FAIL;
}
static GstPadNegotiateReturn
negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
{
g_print ("<(%d:%d:%p)", sink_rate, (*caps)->refcount, *caps);
sink_rate++;
if (*data == NULL || *caps == NULL) {
g_print ("*");
*caps = gst_caps_new (
"sink_caps",
"audio/raw",
gst_props_new (
"rate", GST_PROPS_INT (sink_rate),
NULL)
);
return GST_PAD_NEGOTIATE_TRY;
}
if (*caps) {
gint in_rate = gst_caps_get_int (*caps, "rate");
g_print ("(%d)", in_rate);
if (in_rate >= 100 && in_rate < 140) {
g_print ("A");
return GST_PAD_NEGOTIATE_AGREE;
}
*caps = gst_caps_copy_on_write (*caps);
g_print ("%p", *caps);
gst_caps_set (*caps, "rate", GST_PROPS_INT (sink_rate));
g_print ("T");
return GST_PAD_NEGOTIATE_TRY;
}
g_print ("F");
return GST_PAD_NEGOTIATE_FAIL;
}
int
main (int argc, char *argv[])
{
gboolean overall = TRUE;
gboolean result;
GstElement *queue;
gst_init (&argc, &argv);
g_mem_chunk_info();
srcconvtempl = src_conv_factory ();
sinkconvtempl = sink_conv_factory ();
srcconvpad = gst_pad_new_from_template (srcconvtempl, "src");
sinkconvpad = gst_pad_new_from_template (sinkconvtempl, "sink");
gst_pad_set_negotiate_function (srcconvpad, negotiate_src);
gst_pad_set_negotiate_function (sinkconvpad, negotiate_sink);
srccaps = src_caps ();
sinkcaps = gst_caps_copy (srccaps);
g_print ("The wild goose chase...\n");
result = gst_pad_try_connect (srcconvpad, sinkconvpad);
g_print ("pad connect 1: %d\n", result);
overall &= (result == TRUE);
result = gst_pad_set_caps (srcconvpad, srccaps);
g_print ("\nset caps on src: %d, final rate: %d\n", result,
gst_caps_get_int (gst_pad_get_caps (srcconvpad), "rate"));
g_print ("with the src negotiate function disabled...\n");
GST_PAD_CAPS (srcconvpad) = NULL;
GST_PAD_CAPS (sinkconvpad) = NULL;
src_rate = 140;
sink_rate = 100;
gst_pad_set_negotiate_function (srcconvpad, NULL);
gst_caps_set (srccaps, "rate", GST_PROPS_INT (120));
result = gst_pad_set_caps (srcconvpad, srccaps);
g_print ("\nset caps on src: %d, final rate: %d\n", result,
gst_caps_get_int (gst_pad_get_caps (srcconvpad), "rate"));
g_print ("with the sink negotiate function disabled...\n");
GST_PAD_CAPS (srcconvpad) = NULL;
GST_PAD_CAPS (sinkconvpad) = NULL;
src_rate = 140;
sink_rate = 100;
gst_pad_set_negotiate_function (srcconvpad, negotiate_src);
gst_pad_set_negotiate_function (sinkconvpad, NULL);
gst_caps_set (sinkcaps, "rate", GST_PROPS_INT (170));
result = gst_pad_set_caps (sinkconvpad, sinkcaps);
g_print ("\nset caps on src: %d, final rate: %d\n", result,
gst_caps_get_int (gst_pad_get_caps (srcconvpad), "rate"));
g_print ("without negotiate functions...\n");
GST_PAD_CAPS (srcconvpad) = NULL;
GST_PAD_CAPS (sinkconvpad) = NULL;
src_rate = 140;
sink_rate = 100;
gst_pad_set_negotiate_function (srcconvpad, NULL);
gst_pad_set_negotiate_function (sinkconvpad, NULL);
sinkcaps = gst_caps_copy (sinkcaps);
gst_caps_set (sinkcaps, "rate", GST_PROPS_INT (150));
result = gst_pad_set_caps (sinkconvpad, sinkcaps);
g_print ("\nset caps on src: %d, final rate: %d\n", result,
gst_caps_get_int (gst_pad_get_caps (srcconvpad), "rate"));
sinkcaps = gst_caps_copy (sinkcaps);
gst_caps_set (sinkcaps, "rate", GST_PROPS_INT (160));
result = gst_pad_set_caps (sinkconvpad, sinkcaps);
g_print ("\nset caps on src: %d, final rate: %d\n", result,
gst_caps_get_int (gst_pad_get_caps (srcconvpad), "rate"));
g_print ("with a proxy element in between...\n");
gst_pad_disconnect (srcconvpad, sinkconvpad);
queue = gst_elementfactory_make ("queue", "queue");
GST_PAD_CAPS (srcconvpad) = NULL;
GST_PAD_CAPS (sinkconvpad) = NULL;
src_rate = 140;
sink_rate = 100;
gst_pad_set_negotiate_function (srcconvpad, negotiate_src);
gst_pad_set_negotiate_function (sinkconvpad, negotiate_sink);
gst_pad_connect (srcconvpad, gst_element_get_pad (queue, "sink"));
gst_pad_connect (gst_element_get_pad (queue, "src"), sinkconvpad);
gst_caps_set (srccaps, "rate", GST_PROPS_INT (50));
result = gst_pad_set_caps (srcconvpad, srccaps);
g_print ("\nset caps on src: %d, final rate: %d\n", result,
gst_caps_get_int (gst_pad_get_caps (srcconvpad), "rate"));
exit (!overall);
}