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cairorender: Fix caps negotiation and cairo surface creation

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This commit is contained in:
Sebastian Dröge 2009-07-16 21:55:31 +02:00
parent 28bee12728
commit 5d0787aa20
1 changed files with 34 additions and 54 deletions
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88
ext/cairo/gstcairorender.c
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@ -171,6 +171,7 @@ gst_cairo_render_setcaps_sink (GstPad * pad, GstCaps * caps)
GstStructure *s = gst_caps_get_structure (caps, 0);
const gchar *mime = gst_structure_get_name (s);
gint fps_n = 0, fps_d = 1;
gint w, h;
GST_DEBUG_OBJECT (c, "Got caps (%s).", mime);
if ((c->png = !strcmp (mime, "image/png")))
@ -204,10 +205,41 @@ gst_cairo_render_setcaps_sink (GstPad * pad, GstCaps * caps)
caps = gst_caps_make_writable (caps);
gst_caps_truncate (caps);
s = gst_caps_get_structure (caps, 0);
mime = gst_structure_get_name (s);
gst_structure_set (s, "height", G_TYPE_INT, c->height, "width", G_TYPE_INT,
c->width, "framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL);
if (c->surface) {
cairo_surface_destroy (c->surface);
c->surface = NULL;
}
w = c->width;
h = c->height;
GST_DEBUG_OBJECT (c, "Setting src caps %" GST_PTR_FORMAT, caps);
gst_pad_set_caps (c->src, caps);
#if CAIRO_HAS_PS_SURFACE
if (!strcmp (mime, "application/postscript")) {
c->surface = cairo_ps_surface_create_for_stream (write_func, c, w, h);
} else
#endif
#if CAIRO_HAS_PDF_SURFACE
if (!strcmp (mime, "application/x-pdf")) {
c->surface = cairo_pdf_surface_create_for_stream (write_func, c, w, h);
} else
#endif
#if CAIRO_HAS_SVG_SURFACE
if (!strcmp (mime, "image/svg")) {
c->surface = cairo_svg_surface_create_for_stream (write_func, c, w, h);
} else
#endif
{
gst_caps_unref (caps);
return FALSE;
}
gst_caps_unref (caps);
return TRUE;
@ -244,57 +276,6 @@ gst_cairo_render_activatepull_sink (GstPad * pad, gboolean active)
return gst_pad_stop_task (pad);
}
static gboolean
gst_cairo_render_setcaps_src (GstPad * pad, GstCaps * caps)
{
GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad));
const GValue *value;
GstStructure *s = gst_caps_get_structure (caps, 0);
const gchar *mime = gst_structure_get_name (s);
gdouble w = 256, h = 256;
if (c->surface) {
cairo_surface_destroy (c->surface);
c->surface = NULL;
}
#if CAIRO_HAS_PNG_FUNCTIONS
if (!strcmp (mime, "image/png"))
return TRUE;
#endif
value = gst_structure_get_value (s, "width");
if (!value || !G_VALUE_HOLDS_INT (value)) {
GST_DEBUG_OBJECT (c, "Width is missing.");
return FALSE;
}
w = g_value_get_int (value);
value = gst_structure_get_value (s, "height");
if (!value || !G_VALUE_HOLDS_INT (value)) {
GST_DEBUG_OBJECT (c, "Height is missing.");
return FALSE;
}
h = g_value_get_int (value);
#if CAIRO_HAS_PS_SURFACE
if (!strcmp (mime, "application/postscript")) {
c->surface = cairo_ps_surface_create_for_stream (write_func, c, w, h);
return TRUE;
}
#endif
#if CAIRO_HAS_PDF_SURFACE
if (!strcmp (mime, "application/x-pdf")) {
c->surface = cairo_pdf_surface_create_for_stream (write_func, c, w, h);
return TRUE;
}
#endif
#if CAIRO_HAS_SVG_SURFACE
if (!strcmp (mime, "image/svg")) {
c->surface = cairo_svg_surface_create_for_stream (write_func, c, w, h);
return TRUE;
}
#endif
return FALSE;
}
static GstElementDetails cairo_render_details =
GST_ELEMENT_DETAILS ("CAIRO encoder",
"Codec/Encoder", "Encodes streams using CAIRO",
@ -355,12 +336,11 @@ gst_cairo_render_init (GstCairoRender * c, GstCairoRenderClass * klass)
/* The source */
c->src =
gst_pad_new_from_template (gst_static_pad_template_get (&t_src), "src");
gst_pad_set_setcaps_function (c->src, gst_cairo_render_setcaps_src);
gst_pad_use_fixed_caps (c->src);
gst_element_add_pad (GST_ELEMENT (c), c->src);
c->width = 256;
c->height = 256;
c->width = 0;
c->height = 0;
}
static void