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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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6bd5dcffab
Original commit message from CVS: The first wave of docs updates Added a little more comments about the API usage in the api docs. Some fixes for the capsnego testsuite.
254 lines
6.7 KiB
C
254 lines
6.7 KiB
C
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#include <gst/gst.h>
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GstPad *srcpad, *sinkpad;
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GstPad *srcconvpad, *sinkconvpad;
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GstPadTemplate *srcpadtempl, *sinkpadtempl;
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GstPadTemplate *srcconvtempl, *sinkconvtempl;
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gint converter_in = -1, converter_out = -1;
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gint target_rate = 2000;
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static GstPadTemplate*
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src_factory (void)
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{
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return
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gst_padtemplate_new (
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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gst_caps_new (
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"test_src",
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"audio/raw",
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gst_props_new (
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"rate", GST_PROPS_INT_RANGE (16, 20000),
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NULL)),
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NULL);
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}
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static GstPadTemplate*
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src_conv_factory (void)
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{
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return
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gst_padtemplate_new (
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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gst_caps_new (
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"test_src",
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"audio/raw",
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gst_props_new (
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"rate", GST_PROPS_INT_RANGE (16, 20000),
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NULL)),
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NULL);
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}
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static GstPadTemplate*
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sink_conv_factory (void)
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{
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return
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gst_padtemplate_new (
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"src",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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gst_caps_new (
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"test_src",
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"audio/raw",
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gst_props_new (
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"rate", GST_PROPS_INT_RANGE (16, 20000),
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NULL)),
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NULL);
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}
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static GstPadTemplate*
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sink_factory (void)
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{
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return
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gst_padtemplate_new (
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"sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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gst_caps_new (
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"test_sink",
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"audio/raw",
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gst_props_new (
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"rate", GST_PROPS_INT_RANGE (16, 20000),
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NULL)),
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NULL);
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}
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static GstCaps*
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sink_caps (void)
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{
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return
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gst_caps_new (
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"sink_caps",
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"audio/raw",
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gst_props_new (
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"rate", GST_PROPS_INT (6000),
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NULL));
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}
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static GstCaps*
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src_caps (void)
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{
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return
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gst_caps_new (
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"src_caps",
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"audio/raw",
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gst_props_new (
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"rate", GST_PROPS_INT (3000),
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NULL));
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}
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static GstPadTemplate *srctempl, *sinktempl;
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static GstCaps *srccaps, *sinkcaps;
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static GstPadNegotiateReturn
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converter_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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g_print (">");
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if (*data == NULL) {
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*caps = NULL;
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return GST_PAD_NEGOTIATE_TRY;
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}
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if (*caps) {
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converter_out = gst_caps_get_int (*caps, "rate");
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return GST_PAD_NEGOTIATE_AGREE;
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}
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return GST_PAD_NEGOTIATE_FAIL;
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}
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static GstPadNegotiateReturn
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converter_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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g_print ("<");
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if (*data == NULL) {
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*caps = GST_PAD_CAPS (srcconvpad);
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return GST_PAD_NEGOTIATE_TRY;
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}
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if (*caps) {
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converter_in = gst_caps_get_int (*caps, "rate");
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if (*data == 1) {
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converter_out = gst_caps_get_int (*caps, "rate");
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return gst_pad_negotiate_proxy (pad, srcconvpad, caps);
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}
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return GST_PAD_NEGOTIATE_AGREE;
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}
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return GST_PAD_NEGOTIATE_FAIL;
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}
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static GstPadNegotiateReturn
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target_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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g_print ("{");
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if (*data == NULL) {
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*caps = gst_caps_new (
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"target_caps",
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"audio/raw",
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gst_props_new (
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"rate", GST_PROPS_INT (target_rate),
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NULL)
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);
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return GST_PAD_NEGOTIATE_TRY;
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}
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if (*caps) {
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target_rate = gst_caps_get_int (*caps, "rate");
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g_print ("target set %d\n", target_rate);
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return GST_PAD_NEGOTIATE_AGREE;
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}
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return GST_PAD_NEGOTIATE_FAIL;
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}
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int
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main (int argc, char *argv[])
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{
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gboolean overall = TRUE;
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gboolean result;
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gst_init (&argc, &argv);
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srctempl = src_factory ();
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sinktempl = sink_factory ();
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srcpad = gst_pad_new_from_template (srctempl, "src");
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sinkpad = gst_pad_new_from_template (sinktempl, "sink");
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srcconvtempl = src_conv_factory ();
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sinkconvtempl = sink_conv_factory ();
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srcconvpad = gst_pad_new_from_template (srcconvtempl, "csrc");
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sinkconvpad = gst_pad_new_from_template (sinkconvtempl, "csink");
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gst_pad_set_negotiate_function (srcconvpad, converter_negotiate_src);
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gst_pad_set_negotiate_function (sinkconvpad, converter_negotiate_sink);
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gst_pad_set_negotiate_function (sinkpad, target_negotiate_sink);
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sinkcaps = sink_caps ();
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srccaps = src_caps ();
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g_print ("-------) (-----------) (----- \n");
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g_print (" ! ! converter ! ! \n");
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g_print (" src -- csink csrc -- sink \n");
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g_print ("-------) (-----------) (----- \n\n");
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g_print ("The convertor first tries to proxy the caps received\n");
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g_print ("on its csink pad to its csrc pad, when that fails, it\n");
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g_print ("sets up the conversion.\n\n");
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g_print ("sink pad set caps (rate=%d), converter status: %d %d\n", target_rate,
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converter_in, converter_out);
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gst_caps_set (sinkcaps, "rate", GST_PROPS_INT (target_rate));
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result = gst_pad_set_caps (sinkpad, sinkcaps);
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g_print ("result: %d, converter status: %d %d, target: %d\n\n", result,
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converter_in, converter_out, target_rate);
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result = gst_pad_connect (srcpad, sinkconvpad);
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g_print ("pad connect 1: %d\n", result);
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overall &= (result == TRUE);
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result = gst_pad_connect (srcconvpad, sinkpad);
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g_print ("pad connect 2: %d\n", result);
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overall &= (result == TRUE);
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g_print ("after connect, converter status: %d %d, target %d\n\n", converter_in, converter_out, target_rate);
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g_print ("src pad set caps (rate=%d), converter status: %d %d, target %d \n", gst_caps_get_int (srccaps, "rate"),
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converter_in, converter_out, target_rate);
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result = gst_pad_set_caps (srcpad, srccaps);
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g_print ("result %d, converter status: %d %d, target %d\n\n", result,
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converter_in, converter_out, target_rate);
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g_print ("sink pad set caps (rate=2000), converter status: %d %d, target %d \n",
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converter_in, converter_out, target_rate);
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target_rate = 2000;
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gst_caps_set (sinkcaps, "rate", GST_PROPS_INT (target_rate));
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result = gst_pad_set_caps (sinkpad, sinkcaps);
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g_print ("result %d, converter status: %d %d, target: %d\n\n", result,
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converter_in, converter_out, target_rate);
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gst_caps_set (srccaps, "rate", GST_PROPS_INT (4000));
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result = gst_pad_renegotiate (srcpad);
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g_print ("sink pad renegotiate caps %d, converter status: %d %d, target: %d\n", result,
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converter_in, converter_out, target_rate);
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gst_caps_set (srccaps, "rate", GST_PROPS_INT (40000));
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result = gst_pad_set_caps (srcpad, srccaps);
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g_print ("sink pad set caps %d, converter status: %d %d, target: %d\n", result,
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converter_in, converter_out, target_rate);
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gst_caps_set (sinkcaps, "rate", GST_PROPS_INT (40000));
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result = gst_pad_set_caps (sinkpad, sinkcaps);
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g_print ("sink pad set caps %d, converter status: %d %d, target: %d\n", result,
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converter_in, converter_out, target_rate);
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target_rate = 9000;
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gst_caps_set (sinkcaps, "rate", GST_PROPS_INT (target_rate));
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result = gst_pad_set_caps (sinkpad, sinkcaps);
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g_print ("sink pad set caps %d, converter status: %d %d, target: %d\n", result,
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converter_in, converter_out, target_rate);
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exit (!overall);
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}
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