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glvideoflip: correctly update the output caps on method changes

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When changing methods we may need different output caps.
This commit is contained in:
Matthew Waters 2016-02-03 10:52:08 +11:00
parent 2da52e79b3
commit 189ece1dc2
2 changed files with 129 additions and 111 deletions
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238
ext/gl/gstglvideoflip.c
View file

@ -103,6 +103,7 @@ G_DEFINE_TYPE_WITH_CODE (GstGLVideoFlip, gst_gl_video_flip,
GST_TYPE_BIN, GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
"glvideoflip", 0, "glvideoflip element"););
static void gst_gl_video_flip_finalize (GObject * object);
static void gst_gl_video_flip_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gl_video_flip_get_property (GObject * object, guint prop_id,
@ -122,6 +123,7 @@ gst_gl_video_flip_class_init (GstGLVideoFlipClass * klass)
gobject_class = (GObjectClass *) klass;
element_class = GST_ELEMENT_CLASS (klass);
gobject_class->finalize = gst_gl_video_flip_finalize;
gobject_class->set_property = gst_gl_video_flip_set_property;
gobject_class->get_property = gst_gl_video_flip_get_property;
@ -201,107 +203,14 @@ gst_gl_video_flip_init (GstGLVideoFlip * flip)
}
}
/* with object lock */
static void
_set_active_method (GstGLVideoFlip * vf, GstGLVideoFlipMethod method)
gst_gl_video_flip_finalize (GObject * object)
{
gfloat rot_z = 0., scale_x = 1.0, scale_y = 1.0;
GstGLVideoFlip *flip = GST_GL_VIDEO_FLIP (object);
switch (method) {
case GST_GL_VIDEO_FLIP_METHOD_IDENTITY:
break;
case GST_GL_VIDEO_FLIP_METHOD_90R:
scale_x *= vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 90.;
break;
case GST_GL_VIDEO_FLIP_METHOD_180:
rot_z = 180.;
break;
case GST_GL_VIDEO_FLIP_METHOD_90L:
scale_x *= vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 270.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_HORIZ:
scale_x *= -1.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_UR_LL:
scale_x *= -vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 90.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_VERT:
scale_x *= -1.;
rot_z = 180.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_UL_LR:
scale_x *= -vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 270.;
break;
default:
break;
}
vf->active_method = method;
GST_OBJECT_UNLOCK (vf);
g_object_set (vf->transformation, "rotation-z", rot_z, "scale-x", scale_x,
"scale-y", scale_y, NULL);
GST_OBJECT_LOCK (vf);
}
gst_caps_replace (&flip->input_caps, NULL);
static void
gst_gl_video_flip_set_method (GstGLVideoFlip * vf, GstGLVideoFlipMethod method,
gboolean from_tag)
{
GST_OBJECT_LOCK (vf);
/* Store updated method */
if (from_tag)
vf->tag_method = method;
else
vf->method = method;
/* Get the new method */
if (vf->method == GST_GL_VIDEO_FLIP_METHOD_AUTO)
method = vf->tag_method;
else
method = vf->method;
_set_active_method (vf, method);
GST_OBJECT_UNLOCK (vf);
}
static void
gst_gl_video_flip_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGLVideoFlip *vf = GST_GL_VIDEO_FLIP (object);
switch (prop_id) {
case PROP_METHOD:
gst_gl_video_flip_set_method (vf, g_value_get_enum (value), FALSE);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gl_video_flip_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGLVideoFlip *vf = GST_GL_VIDEO_FLIP (object);
switch (prop_id) {
case PROP_METHOD:
g_value_set_enum (value, vf->method);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/* Caps negotiation happens like this:
@ -359,6 +268,125 @@ _transform_caps (GstGLVideoFlip * vf, GstPadDirection direction, GstCaps * caps)
return output;
}
/* with object lock */
static void
_set_active_method (GstGLVideoFlip * vf, GstGLVideoFlipMethod method,
GstCaps * caps)
{
gfloat rot_z = 0., scale_x = 1.0, scale_y = 1.0;
GstCaps *output_caps, *templ;
GstPad *srcpad;
switch (method) {
case GST_GL_VIDEO_FLIP_METHOD_IDENTITY:
break;
case GST_GL_VIDEO_FLIP_METHOD_90R:
scale_x *= vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 90.;
break;
case GST_GL_VIDEO_FLIP_METHOD_180:
rot_z = 180.;
break;
case GST_GL_VIDEO_FLIP_METHOD_90L:
scale_x *= vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 270.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_HORIZ:
scale_x *= -1.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_UR_LL:
scale_x *= -vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 90.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_VERT:
scale_x *= -1.;
rot_z = 180.;
break;
case GST_GL_VIDEO_FLIP_METHOD_FLIP_UL_LR:
scale_x *= -vf->aspect;
scale_y *= 1. / vf->aspect;
rot_z = 270.;
break;
default:
break;
}
vf->active_method = method;
output_caps = _transform_caps (vf, GST_PAD_SINK, caps);
gst_caps_replace (&vf->input_caps, caps);
srcpad = gst_element_get_static_pad (vf->transformation, "src");
templ = gst_pad_get_pad_template_caps (srcpad);
gst_object_unref (srcpad);
gst_caps_append (output_caps, gst_caps_ref (templ));
GST_OBJECT_UNLOCK (vf);
g_object_set (vf->input_capsfilter, "caps", gst_caps_ref (caps), NULL);
g_object_set (vf->output_capsfilter, "caps", output_caps, NULL);
g_object_set (vf->transformation, "rotation-z", rot_z, "scale-x", scale_x,
"scale-y", scale_y, NULL);
GST_OBJECT_LOCK (vf);
}
static void
gst_gl_video_flip_set_method (GstGLVideoFlip * vf, GstGLVideoFlipMethod method,
gboolean from_tag)
{
GST_OBJECT_LOCK (vf);
/* Store updated method */
if (from_tag)
vf->tag_method = method;
else
vf->method = method;
/* Get the new method */
if (vf->method == GST_GL_VIDEO_FLIP_METHOD_AUTO)
method = vf->tag_method;
else
method = vf->method;
if (vf->input_caps)
_set_active_method (vf, method, vf->input_caps);
GST_OBJECT_UNLOCK (vf);
}
static void
gst_gl_video_flip_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGLVideoFlip *vf = GST_GL_VIDEO_FLIP (object);
switch (prop_id) {
case PROP_METHOD:
gst_gl_video_flip_set_method (vf, g_value_get_enum (value), FALSE);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gl_video_flip_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGLVideoFlip *vf = GST_GL_VIDEO_FLIP (object);
switch (prop_id) {
case PROP_METHOD:
g_value_set_enum (value, vf->method);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstPadProbeReturn
_input_sink_probe (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
@ -406,8 +434,7 @@ _input_sink_probe (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
break;
}
case GST_EVENT_CAPS:{
GstCaps *caps, *output, *templ;
GstPad *srcpad;
GstCaps *caps;
GstVideoInfo v_info;
gst_event_parse_caps (event, &caps);
@ -418,19 +445,8 @@ _input_sink_probe (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
(gfloat) GST_VIDEO_INFO_HEIGHT (&v_info);
else
vf->aspect = 1.0;
_set_active_method (vf, vf->active_method);
_set_active_method (vf, vf->active_method, caps);
GST_OBJECT_UNLOCK (vf);
output = _transform_caps (vf, GST_PAD_SINK, caps);
/* allow overriding the output caps */
srcpad = gst_element_get_static_pad (vf->transformation, "src");
templ = gst_pad_get_pad_template_caps (srcpad);
gst_caps_append (output, gst_caps_ref (templ));
gst_object_unref (srcpad);
g_object_set (vf->input_capsfilter, "caps", gst_caps_copy (caps), NULL);
g_object_set (vf->output_capsfilter, "caps", output, NULL);
break;
}
default:

2
ext/gl/gstglvideoflip.h
View file

@ -75,6 +75,8 @@ struct _GstGLVideoFlip
gulong sink_probe;
gulong src_probe;
GstCaps *input_caps;
/* properties */
GstGLVideoFlipMethod method;
GstGLVideoFlipMethod tag_method;