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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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d78215be9d
Original commit message from CVS: More Caps changes, this change introduces the padfactory. the GstPadFactory will be used to describe the pads that an element will contain during its lifetime. mpg123 and mp3parse serve as an example. More XML changes to incorporate the padfactories.
131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
#include <gst/gst.h>
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static GstTypeFactory mpegfactory = {
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"video/mpeg", // major type
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".mpg .mpeg", // extenstions
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NULL, // typefind function
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};
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static GstCapsFactory mpeg2dec_sink_caps = {
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"video/mpeg",
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"mpegtype", GST_PROPS_LIST (
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GST_PROPS_INT(1),
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GST_PROPS_INT(2)
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),
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NULL
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};
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static GstCapsFactory mp1parse_src_caps = {
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"video/mpeg",
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"mpegtype", GST_PROPS_LIST (
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GST_PROPS_INT(1)
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),
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NULL
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};
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static GstCapsFactory mpeg2dec_src_caps = {
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"video/raw",
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"fourcc", GST_PROPS_LIST (
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GST_PROPS_FOURCC ('Y','V','1','2'),
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GST_PROPS_FOURCC_INT (0x56595559)
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),
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"width", GST_PROPS_INT_RANGE (16, 4096),
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"height", GST_PROPS_INT_RANGE (16, 4096),
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NULL
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};
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static GstCapsFactory raw_sink_caps = {
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"video/raw",
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"fourcc", GST_PROPS_LIST (
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GST_PROPS_FOURCC_INT (0x32315659)
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),
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"height", GST_PROPS_INT_RANGE (16, 256),
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NULL
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};
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static GstCapsFactory raw2_sink_caps = {
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"video/raw",
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"fourcc", GST_PROPS_LIST (
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GST_PROPS_FOURCC_INT (0x32315659),
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GST_PROPS_FOURCC ('Y','U','Y','V')
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),
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"height", GST_PROPS_INT_RANGE (16, 4096),
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NULL
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};
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static GstCapsListFactory mpg123_sinklist_caps =
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{
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&raw2_sink_caps,
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&raw2_sink_caps,
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NULL
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};
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static GstCaps *sinkcaps = NULL,
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*rawcaps = NULL,
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*rawcaps2 = NULL,
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*rawcaps3 = NULL,
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*sinkcapslist = NULL,
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*mp1parsecaps = NULL;
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int main(int argc,char *argv[])
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{
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gboolean testret;
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xmlDocPtr doc;
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xmlNodePtr parent;
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doc = xmlNewDoc ("1.0");
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doc->root = xmlNewDocNode (doc, NULL, "Capabilities", NULL);
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_gst_type_initialize ();
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sinkcaps = gst_caps_register (&mpeg2dec_sink_caps);
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parent = xmlNewChild (doc->root, NULL, "Capabilities1", NULL);
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gst_caps_save_thyself (sinkcaps, parent);
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rawcaps = gst_caps_register (&mpeg2dec_src_caps);
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parent = xmlNewChild (doc->root, NULL, "Capabilities2", NULL);
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gst_caps_save_thyself (rawcaps, parent);
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rawcaps2 = gst_caps_register (&raw_sink_caps);
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parent = xmlNewChild (doc->root, NULL, "Capabilities3", NULL);
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gst_caps_save_thyself (rawcaps2, parent);
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mp1parsecaps = gst_caps_register (&mp1parse_src_caps);
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parent = xmlNewChild (doc->root, NULL, "Capabilities4", NULL);
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gst_caps_save_thyself (mp1parsecaps, parent);
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rawcaps3 = gst_caps_register (&raw2_sink_caps);
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parent = xmlNewChild (doc->root, NULL, "Capabilities5", NULL);
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gst_caps_save_thyself (rawcaps3, parent);
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xmlDocDump(stdout, doc);
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testret = gst_caps_check_compatibility (mp1parsecaps, rawcaps);
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g_print ("4 <-> 2 == %d (invalid, wrong major type)\n", testret);
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testret = gst_caps_check_compatibility (mp1parsecaps, sinkcaps);
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g_print ("4 <-> 1 == %d (valid, subset)\n", testret);
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testret = gst_caps_check_compatibility (sinkcaps, mp1parsecaps);
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g_print ("1 <-> 4 == %d (invalid, superset)\n", testret);
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testret = gst_caps_check_compatibility (rawcaps, rawcaps2);
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g_print ("2 <-> 3 == %d (invalid, ranges)\n", testret);
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testret = gst_caps_check_compatibility (rawcaps, rawcaps3);
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g_print ("2 <-> 5 == %d (valid)\n", testret);
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testret = gst_caps_check_compatibility (rawcaps3, rawcaps);
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g_print ("5 <-> 2 == %d (invalid)\n", testret);
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testret = gst_caps_check_compatibility (rawcaps2, rawcaps3);
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g_print ("3 <-> 5 == %d (valid)\n", testret);
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testret = gst_caps_check_compatibility (rawcaps2, rawcaps);
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g_print ("3 <-> 2 == %d (invalid, property missing in source)\n", testret);
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testret = gst_caps_check_compatibility (rawcaps, rawcaps);
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g_print ("2 <-> 2 == %d (valid, same caps)\n", testret);
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return 0;
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}
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