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glvideomixer: implement with glmixerbin

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The relevant properties are forwarded to/from the containing bin
and sink pads.
This commit is contained in:
Matthew Waters 2015-02-26 13:45:56 +11:00
parent b6cf2d9f21
commit acd9a252c0
2 changed files with 263 additions and 51 deletions
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313
ext/gl/gstglvideomixer.c
View file

@ -44,16 +44,273 @@
#endif
#include "gstglvideomixer.h"
#include "gstglmixerbin.h"
#define GST_CAT_DEFAULT gst_gl_video_mixer_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define GST_GL_TYPE_VIDEO_MIXER_BACKGROUND (gst_gl_video_mixer_background_get_type())
static GType
gst_gl_video_mixer_background_get_type (void)
{
static GType mixer_background_type = 0;
static const GEnumValue mixer_background[] = {
{GST_GL_VIDEO_MIXER_BACKGROUND_CHECKER, "Checker pattern", "checker"},
{GST_GL_VIDEO_MIXER_BACKGROUND_BLACK, "Black", "black"},
{GST_GL_VIDEO_MIXER_BACKGROUND_WHITE, "White", "white"},
{GST_GL_VIDEO_MIXER_BACKGROUND_TRANSPARENT,
"Transparent Background to enable further compositing", "transparent"},
{0, NULL, NULL},
};
if (!mixer_background_type) {
mixer_background_type =
g_enum_register_static ("GstGLVideoMixerBackground", mixer_background);
}
return mixer_background_type;
}
#define DEFAULT_PAD_XPOS 0
#define DEFAULT_PAD_YPOS 0
#define DEFAULT_PAD_WIDTH 0
#define DEFAULT_PAD_HEIGHT 0
#define DEFAULT_PAD_ALPHA 1.0
#define DEFAULT_PAD_ZORDER 0
enum
{
PROP_INPUT_0,
PROP_INPUT_XPOS,
PROP_INPUT_YPOS,
PROP_INPUT_WIDTH,
PROP_INPUT_HEIGHT,
PROP_INPUT_ALPHA,
PROP_INPUT_ZORDER,
};
static void gst_gl_video_mixer_input_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_gl_video_mixer_input_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_gl_video_mixer_input_chain (GstPad * pad,
GstObject * parent, GstBuffer * buffer);
static GstFlowReturn gst_gl_video_mixer_input_event (GstPad * pad,
GstObject * parent, GstEvent * event);
typedef struct _GstGLVideoMixerInput GstGLVideoMixerInput;
typedef GstGhostPadClass GstGLVideoMixerInputClass;
struct _GstGLVideoMixerInput
{
GstGhostPad parent;
GstSegment segment;
GstPad *mixer_pad;
};
GType gst_gl_video_mixer_input_get_type (void);
G_DEFINE_TYPE (GstGLVideoMixerInput, gst_gl_video_mixer_input,
GST_TYPE_GHOST_PAD);
static void
gst_gl_video_mixer_input_init (GstGLVideoMixerInput * self)
{
GstPad *pad = GST_PAD (self);
gst_pad_set_event_function (pad, gst_gl_video_mixer_input_event);
}
static void
gst_gl_video_mixer_input_class_init (GstGLVideoMixerInputClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = gst_gl_video_mixer_input_set_property;
gobject_class->get_property = gst_gl_video_mixer_input_get_property;
g_object_class_install_property (gobject_class, PROP_INPUT_ZORDER,
g_param_spec_uint ("zorder", "Z-Order", "Z Order of the picture",
0, 10000, DEFAULT_PAD_ZORDER,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INPUT_XPOS,
g_param_spec_int ("xpos", "X Position", "X Position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_XPOS,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INPUT_YPOS,
g_param_spec_int ("ypos", "Y Position", "Y Position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_YPOS,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INPUT_WIDTH,
g_param_spec_int ("width", "Width", "Width of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_WIDTH,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INPUT_HEIGHT,
g_param_spec_int ("height", "Height", "Height of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_HEIGHT,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INPUT_ALPHA,
g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0,
DEFAULT_PAD_ALPHA,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
}
static void
gst_gl_video_mixer_input_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGLVideoMixerInput *self = (GstGLVideoMixerInput *) object;
if (self->mixer_pad)
g_object_get_property (G_OBJECT (self->mixer_pad), pspec->name, value);
}
static void
gst_gl_video_mixer_input_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGLVideoMixerInput *self = (GstGLVideoMixerInput *) object;
if (self->mixer_pad)
g_object_set_property (G_OBJECT (self->mixer_pad), pspec->name, value);
}
static GstFlowReturn
gst_gl_video_mixer_input_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer)
{
GstGLVideoMixerInput *self = (GstGLVideoMixerInput *) pad;
GstClockTime timestamp, stream_time;
// gdouble alpha;
timestamp = GST_BUFFER_TIMESTAMP (buffer);
stream_time =
gst_segment_to_stream_time (&self->segment, GST_FORMAT_TIME, timestamp);
gst_object_sync_values (GST_OBJECT (self), stream_time);
#if 0
/* FIXME: implement no-upload on alpha = 0 */
g_object_get (self, "alpha", &alpha, NULL);
if (alpha <= 0.0) {
GST_DEBUG_OBJECT (self, "dropping buffer %" GST_PTR_FORMAT
" due to alpha value %f", buffer, alpha);
gst_buffer_unref (buffer);
return GST_FLOW_OK;
}
#endif
return gst_proxy_pad_chain_default (pad, parent, buffer);
}
static GstFlowReturn
gst_gl_video_mixer_input_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstGLVideoMixerInput *self = (GstGLVideoMixerInput *) pad;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
gst_event_copy_segment (event, &self->segment);
break;
default:
break;
}
return gst_pad_event_default (pad, parent, event);
}
static GstGhostPad *
_create_video_mixer_input (GstGLMixerBin * self, GstPad * mixer_pad)
{
GstGLVideoMixerInput *input =
g_object_new (gst_gl_video_mixer_input_get_type (), "name",
GST_OBJECT_NAME (mixer_pad), "direction", GST_PAD_DIRECTION (mixer_pad),
NULL);
if (!gst_ghost_pad_construct (GST_GHOST_PAD (input))) {
gst_object_unref (input);
return NULL;
}
gst_pad_set_chain_function (GST_PAD (input), gst_gl_video_mixer_input_chain);
input->mixer_pad = mixer_pad;
return GST_GHOST_PAD (input);
}
enum
{
PROP_BIN_0,
PROP_BIN_BACKGROUND,
};
#define DEFAULT_BACKGROUND GST_GL_VIDEO_MIXER_BACKGROUND_CHECKER
static void gst_gl_video_mixer_bin_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_gl_video_mixer_bin_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
typedef GstGLMixerBin GstGLVideoMixerBin;
typedef GstGLMixerBinClass GstGLVideoMixerBinClass;
G_DEFINE_TYPE (GstGLVideoMixerBin, gst_gl_video_mixer_bin,
GST_TYPE_GL_MIXER_BIN);
static void
gst_gl_video_mixer_bin_init (GstGLVideoMixerBin * self)
{
GstGLMixerBin *mix_bin = GST_GL_MIXER_BIN (self);
gst_gl_mixer_bin_finish_init_with_element (mix_bin,
g_object_new (GST_TYPE_GL_VIDEO_MIXER, NULL));
}
static void
gst_gl_video_mixer_bin_class_init (GstGLVideoMixerBinClass * klass)
{
GstGLMixerBinClass *mixer_class = GST_GL_MIXER_BIN_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
mixer_class->create_input_pad = _create_video_mixer_input;
gobject_class->set_property = gst_gl_video_mixer_bin_set_property;
gobject_class->get_property = gst_gl_video_mixer_bin_get_property;
g_object_class_install_property (gobject_class, PROP_BIN_BACKGROUND,
g_param_spec_enum ("background", "Background", "Background type",
GST_GL_TYPE_VIDEO_MIXER_BACKGROUND,
DEFAULT_BACKGROUND, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_gl_video_mixer_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGLMixerBin *self = GST_GL_MIXER_BIN (object);
if (self->mixer)
g_object_get_property (G_OBJECT (self->mixer), pspec->name, value);
}
static void
gst_gl_video_mixer_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGLMixerBin *self = GST_GL_MIXER_BIN (object);
if (self->mixer)
g_object_set_property (G_OBJECT (self->mixer), pspec->name, value);
}
enum
{
PROP_0,
PROP_BACKGROUND,
};
#define DEFAULT_BACKGROUND GST_GL_VIDEO_MIXER_BACKGROUND_CHECKER
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_gl_video_mixer_debug, "glvideomixer", 0, "glvideomixer element");
@ -178,14 +435,7 @@ static void gst_gl_video_mixer_pad_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_gl_video_mixer_pad_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstBuffer *gst_gl_video_mixer_pad_upload_buffer (GstGLMixer * mix,
GstGLMixerFrameData * frame, GstBuffer * buffer);
#define DEFAULT_PAD_XPOS 0
#define DEFAULT_PAD_YPOS 0
#define DEFAULT_PAD_WIDTH 0
#define DEFAULT_PAD_HEIGHT 0
#define DEFAULT_PAD_ALPHA 1.0
enum
{
PROP_PAD_0,
@ -206,7 +456,6 @@ static void
gst_gl_video_mixer_pad_class_init (GstGLVideoMixerPadClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstGLMixerPadClass *mix_pad_class = (GstGLMixerPadClass *) klass;
gobject_class->set_property = gst_gl_video_mixer_pad_set_property;
gobject_class->get_property = gst_gl_video_mixer_pad_get_property;
@ -231,8 +480,6 @@ gst_gl_video_mixer_pad_class_init (GstGLVideoMixerPadClass * klass)
g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0,
DEFAULT_PAD_ALPHA,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
mix_pad_class->upload_buffer = gst_gl_video_mixer_pad_upload_buffer;
}
static void
@ -298,44 +545,6 @@ gst_gl_video_mixer_pad_set_property (GObject * object, guint prop_id,
gst_object_unref (mix);
}
static GstBuffer *
gst_gl_video_mixer_pad_upload_buffer (GstGLMixer * mix,
GstGLMixerFrameData * frame, GstBuffer * buffer)
{
GstGLVideoMixerPad *pad = GST_GL_VIDEO_MIXER_PAD (frame->pad);
if (pad->alpha > 0.0) {
return
GST_GL_MIXER_PAD_CLASS
(gst_gl_video_mixer_pad_parent_class)->upload_buffer (mix, frame,
buffer);
}
return NULL;
}
#define GST_GL_TYPE_VIDEO_MIXER_BACKGROUND (gst_gl_video_mixer_background_get_type())
static GType
gst_gl_video_mixer_background_get_type (void)
{
static GType mixer_background_type = 0;
static const GEnumValue mixer_background[] = {
{GST_GL_VIDEO_MIXER_BACKGROUND_CHECKER, "Checker pattern", "checker"},
{GST_GL_VIDEO_MIXER_BACKGROUND_BLACK, "Black", "black"},
{GST_GL_VIDEO_MIXER_BACKGROUND_WHITE, "White", "white"},
{GST_GL_VIDEO_MIXER_BACKGROUND_TRANSPARENT,
"Transparent Background to enable further compositing", "transparent"},
{0, NULL, NULL},
};
if (!mixer_background_type) {
mixer_background_type =
g_enum_register_static ("GstGLVideoMixerBackground", mixer_background);
}
return mixer_background_type;
}
static void
gst_gl_video_mixer_class_init (GstGLVideoMixerClass * klass)
{
@ -352,7 +561,7 @@ gst_gl_video_mixer_class_init (GstGLVideoMixerClass * klass)
gst_element_class_set_metadata (element_class, "OpenGL video_mixer",
"Filter/Effect/Video/Compositor", "OpenGL video_mixer",
"Julien Isorce <julien.isorce@gmail.com>");
"Matthew Waters <matthew@centricular.com>");
g_object_class_install_property (gobject_class, PROP_BACKGROUND,
g_param_spec_enum ("background", "Background", "Background type",
@ -454,7 +663,9 @@ _update_caps (GstVideoAggregator * vagg, GstCaps * caps)
}
GST_OBJECT_UNLOCK (vagg);
ret = gst_gl_mixer_update_caps (GST_GL_MIXER (vagg), caps);
ret =
GST_VIDEO_AGGREGATOR_CLASS (gst_gl_video_mixer_parent_class)->update_caps
(vagg, caps);
for (i = 0; i < gst_caps_get_size (ret); i++) {
GstStructure *s = gst_caps_get_structure (ret, i);

1
ext/gl/gstglvideomixer.h
View file

@ -73,6 +73,7 @@ struct _GstGLVideoMixerClass
};
GType gst_gl_video_mixer_get_type (void);
GType gst_gl_video_mixer_bin_get_type (void);
G_END_DECLS