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-rw-r--r--gst/chart/gstchart.c201
1 files changed, 103 insertions, 98 deletions
diff --git a/gst/chart/gstchart.c b/gst/chart/gstchart.c
index 97cb6fc0..bc86b893 100644
--- a/gst/chart/gstchart.c
+++ b/gst/chart/gstchart.c
@@ -22,6 +22,7 @@
#endif
#include <config.h>
#include <gst/gst.h>
+#include <gst/video/video.h>
#define GST_TYPE_CHART (gst_chart_get_type())
#define GST_CHART(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CHART,GstChart))
@@ -47,10 +48,9 @@ struct _GstChart {
gint depth;
gint width;
gint height;
- gboolean first_buffer;
gint samplerate;
- gint framerate; /* desired frame rate */
+ gfloat framerate; /* desired frame rate */
gint samples_between_frames; /* number of samples between start of successive frames */
gint samples_since_last_frame; /* number of samples between start of successive frames */
};
@@ -84,79 +84,30 @@ enum {
/* FILL ME */
};
-static GstPadTemplate*
-src_template_factory (void)
-{
- static GstPadTemplate *template = NULL;
-
- if (!template) {
- template = gst_pad_template_new (
- "src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- gst_caps_new (
- "chartsrc",
- "video/raw",
- /*gst_props_new (
- "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
- "bpp", GST_PROPS_INT (32),
- "depth", GST_PROPS_INT (32),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "red_mask", GST_PROPS_INT (0xff0000),
- "green_mask", GST_PROPS_INT (0xff00),
- "blue_mask", GST_PROPS_INT (0xff),
- "width", GST_PROPS_INT_RANGE (16, 4096),
- "height", GST_PROPS_INT_RANGE (16, 4096),
- NULL),*/
- gst_props_new (
- "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
- "bpp", GST_PROPS_INT (16),
- "depth", GST_PROPS_INT (16),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "red_mask", GST_PROPS_INT (0xf800),
- "green_mask", GST_PROPS_INT (0x07e0),
- "blue_mask", GST_PROPS_INT (0x001f),
- "width", GST_PROPS_INT_RANGE (16, 4096),
- "height", GST_PROPS_INT_RANGE (16, 4096),
- NULL)
- ),
- NULL);
- }
- return template;
-}
-
-static GstPadTemplate*
-sink_template_factory (void)
-{
- static GstPadTemplate *template = NULL;
-
- if (!template) {
- template = gst_pad_template_new (
- "sink", /* the name of the pads */
- GST_PAD_SINK, /* type of the pad */
- GST_PAD_ALWAYS, /* ALWAYS/SOMETIMES */
- gst_caps_new (
- "chartsink", /* the name of the caps */
- "audio/raw", /* the mime type of the caps */
- gst_props_new (
- /* Properties follow: */
- "format", GST_PROPS_STRING ("int"),
- "law", GST_PROPS_INT (0),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "signed", GST_PROPS_BOOLEAN (TRUE),
- "width", GST_PROPS_INT (16),
- "depth", GST_PROPS_INT (16),
- "rate", GST_PROPS_INT_RANGE (8000, 96000),
- "channels", GST_PROPS_INT (1),
- NULL)
- ),
- NULL);
- }
-
- return template;
-}
-
-
+GST_PAD_TEMPLATE_FACTORY (src_factory,
+ "src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ gst_caps_new ("chartsrc",
+ "video/x-raw-rgb",
+ GST_VIDEO_RGB_PAD_TEMPLATE_PROPS_16
+ )
+);
+
+GST_PAD_TEMPLATE_FACTORY (sink_factory,
+ "sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW ("chartsink",
+ "audio/x-raw-int",
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "signed", GST_PROPS_BOOLEAN (TRUE),
+ "width", GST_PROPS_INT (16),
+ "depth", GST_PROPS_INT (16),
+ "rate", GST_PROPS_INT_RANGE (8000, 96000),
+ "channels", GST_PROPS_INT (1)
+ )
+);
static void gst_chart_class_init (GstChartClass *klass);
@@ -169,6 +120,8 @@ static void gst_chart_chain (GstPad *pad, GstBuffer *buf);
static GstPadLinkReturn
gst_chart_sinkconnect (GstPad *pad, GstCaps *caps);
+static GstPadLinkReturn
+ gst_chart_srcconnect (GstPad *pad, GstCaps *caps);
static GstElementClass *parent_class = NULL;
@@ -210,13 +163,18 @@ static void
gst_chart_init (GstChart *chart)
{
/* create the sink and src pads */
- chart->sinkpad = gst_pad_new_from_template (sink_template_factory (), "sink");
- chart->srcpad = gst_pad_new_from_template (src_template_factory (), "src");
+ chart->sinkpad = gst_pad_new_from_template (
+ GST_PAD_TEMPLATE_GET (sink_factory),
+ "sink");
+ chart->srcpad = gst_pad_new_from_template (
+ GST_PAD_TEMPLATE_GET (src_factory),
+ "src");
gst_element_add_pad (GST_ELEMENT (chart), chart->sinkpad);
gst_element_add_pad (GST_ELEMENT (chart), chart->srcpad);
gst_pad_set_chain_function (chart->sinkpad, gst_chart_chain);
gst_pad_set_link_function (chart->sinkpad, gst_chart_sinkconnect);
+ gst_pad_set_link_function (chart->sinkpad, gst_chart_srcconnect);
chart->next_time = 0;
chart->peerpool = NULL;
@@ -224,7 +182,6 @@ gst_chart_init (GstChart *chart)
/* reset the initial video state */
chart->bpp = 16;
chart->depth = 16;
- chart->first_buffer = TRUE;
chart->width = 256;
chart->height = 128;
@@ -250,6 +207,54 @@ gst_chart_sinkconnect (GstPad *pad, GstCaps *caps)
return GST_PAD_LINK_OK;
}
+static GstPadLinkReturn
+gst_chart_srcconnect (GstPad *pad, GstCaps *caps)
+{
+ GstChart *chart;
+ chart = GST_CHART (gst_pad_get_parent (pad));
+
+ if (gst_caps_has_property_typed (caps, "framerate",
+ GST_PROPS_FLOAT_TYPE)) {
+ gst_caps_get_float (caps, "framerate", &chart->framerate);
+ chart->samples_between_frames = chart->samplerate / chart->framerate;
+ }
+
+ if (gst_caps_has_property_typed (caps, "width",
+ GST_PROPS_INT_TYPE)) {
+ gst_caps_get_int (caps, "width", &chart->width);
+ }
+ if (gst_caps_has_property_typed (caps, "height",
+ GST_PROPS_INT_TYPE)) {
+ gst_caps_get_int (caps, "height", &chart->height);
+ }
+
+ GST_DEBUG ("CHART: new src caps: framerate %f, %dx%d",
+ chart->framerate, chart->width, chart->height);
+
+ if (!GST_CAPS_IS_FIXED (caps)) {
+ GstPadLinkReturn ret;
+ GstCaps *newcaps;
+ newcaps = GST_CAPS_NEW ("chartsrc",
+ "video/x-raw-rgb",
+ "bpp", GST_PROPS_INT (chart->bpp),
+ "depth", GST_PROPS_INT (chart->depth),
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "red_mask", GST_PROPS_INT (R_MASK_16),
+ "green_mask", GST_PROPS_INT (G_MASK_16),
+ "blue_mask", GST_PROPS_INT (B_MASK_16),
+ "width", GST_PROPS_INT (chart->width),
+ "height", GST_PROPS_INT (chart->height),
+ "framerate", GST_PROPS_FLOAT (chart->framerate));
+ ret = gst_pad_try_set_caps (chart->srcpad, newcaps);
+ if (ret > 0) {
+ return GST_PAD_LINK_DONE;
+ }
+ return ret;
+ }
+
+ return GST_PAD_LINK_OK;
+}
+
static void
draw_chart_16bpp(guchar * output, gint width, gint height,
gint16 * src_data, gint src_size)
@@ -352,27 +357,25 @@ gst_chart_chain (GstPad *pad, GstBuffer *bufin)
GST_BUFFER_TIMESTAMP (bufout) = chart->next_time;
/* Check if we need to renegotiate size. */
- if (chart->first_buffer) {
+ if (!GST_PAD_CAPS (chart->srcpad)) {
+ GstCaps *newcaps;
GST_DEBUG ("making new pad");
- if (gst_pad_try_set_caps (chart->srcpad,
- GST_CAPS_NEW (
- "chartsrc",
- "video/raw",
- "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R','G','B',' ')),
- "bpp", GST_PROPS_INT (chart->bpp),
- "depth", GST_PROPS_INT (chart->depth),
- "endianness", GST_PROPS_INT (G_BYTE_ORDER),
- "red_mask", GST_PROPS_INT (0xf800),
- "green_mask", GST_PROPS_INT (0x07e0),
- "blue_mask", GST_PROPS_INT (0x001f),
- "width", GST_PROPS_INT (chart->width),
- "height", GST_PROPS_INT (chart->height)
- )) <= 0)
- {
- gst_element_error (GST_ELEMENT (chart), "could not set caps");
+ newcaps = GST_CAPS_NEW ("chartsrc",
+ "video/x-raw-rgb",
+ "bpp", GST_PROPS_INT (chart->bpp),
+ "depth", GST_PROPS_INT (chart->depth),
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "red_mask", GST_PROPS_INT (R_MASK_16),
+ "green_mask", GST_PROPS_INT (G_MASK_16),
+ "blue_mask", GST_PROPS_INT (B_MASK_16),
+ "width", GST_PROPS_INT (chart->width),
+ "height", GST_PROPS_INT (chart->height),
+ "framerate", GST_PROPS_FLOAT (chart->framerate));
+ if (gst_pad_try_set_caps (chart->srcpad, newcaps) <= 0) {
+ gst_element_error (GST_ELEMENT (chart),
+ "chart: could not negotiate format");
return;
}
- chart->first_buffer = FALSE;
}
GST_DEBUG ("CHART: outputting buffer");
@@ -428,8 +431,10 @@ plugin_init (GModule *module, GstPlugin *plugin)
&gst_chart_details);
g_return_val_if_fail(factory != NULL, FALSE);
- gst_element_factory_add_pad_template (factory, src_template_factory ());
- gst_element_factory_add_pad_template (factory, sink_template_factory ());
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (src_factory));
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (sink_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-28 15:48:19 +0000