mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 01:30:38 +00:00
gst/alpha/: Make the various properties of 'alpha' controllable. This allows doing niceties like fade-in/fade-out.
Original commit message from CVS: * gst/alpha/Makefile.am: * gst/alpha/gstalpha.c: (gst_alpha_class_init), (gst_alpha_init), (gst_alpha_sink_event), (gst_alpha_chain), (gst_alpha_change_state), (plugin_init): Make the various properties of 'alpha' controllable. This allows doing niceties like fade-in/fade-out.
This commit is contained in:
Edward Hervey
parent
e7f919986a
commit
7f27c4a065
3 changed files with 89 additions and 11 deletions
|
|
@ -1,3 +1,12 @@
|
|||
2008-01-09 Edward Hervey <edward.hervey@collabora.co.uk>
|
||||
|
||||
* gst/alpha/Makefile.am:
|
||||
* gst/alpha/gstalpha.c: (gst_alpha_class_init), (gst_alpha_init),
|
||||
(gst_alpha_sink_event), (gst_alpha_chain),
|
||||
(gst_alpha_change_state), (plugin_init):
|
||||
Make the various properties of 'alpha' controllable. This allows doing
|
||||
niceties like fade-in/fade-out.
|
||||
|
||||
2008-01-09 Stefan Kost <ensonic@users.sf.net>
|
||||
|
||||
* gst/rtp/gstasteriskh263.c:
|
||||
|
|
|
|||
|
|
@ -2,8 +2,8 @@ plugin_LTLIBRARIES = libgstalpha.la libgstalphacolor.la
|
|||
|
||||
libgstalpha_la_SOURCES = gstalpha.c
|
||||
libgstalpha_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) \
|
||||
$(GST_BASE_CFLAGS) $(GST_CFLAGS)
|
||||
libgstalpha_la_LIBADD = $(GST_LIBS) $(LIBM)
|
||||
$(GST_BASE_CFLAGS) $(GST_CFLAGS) $(GST_CONTROLLER_CFLAGS)
|
||||
libgstalpha_la_LIBADD = $(GST_LIBS) $(LIBM) $(GST_CONTROLLER_LIBS)
|
||||
libgstalpha_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
|
||||
|
||||
libgstalphacolor_la_SOURCES = gstalphacolor.c
|
||||
|
|
|
|||
|
|
@ -22,6 +22,7 @@
|
|||
#endif
|
||||
#include <gst/gst.h>
|
||||
#include <gst/video/video.h>
|
||||
#include <gst/controller/gstcontroller.h>
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
|
@ -58,6 +59,9 @@ GstAlphaMethod;
|
|||
#define ROUND_UP_4(x) (((x) + 3) & ~3)
|
||||
#define ROUND_UP_8(x) (((x) + 7) & ~7)
|
||||
|
||||
#define GST_CAT_DEFAULT gst_alpha_debug
|
||||
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
|
||||
|
||||
struct _GstAlpha
|
||||
{
|
||||
GstElement element;
|
||||
|
|
@ -91,6 +95,8 @@ struct _GstAlpha
|
|||
guint8 accept_angle_ctg;
|
||||
guint8 one_over_kc;
|
||||
guint8 kfgy_scale;
|
||||
|
||||
GstSegment segment;
|
||||
};
|
||||
|
||||
struct _GstAlphaClass
|
||||
|
|
@ -163,6 +169,7 @@ static void gst_alpha_get_property (GObject * object, guint prop_id,
|
|||
|
||||
static gboolean gst_alpha_sink_setcaps (GstPad * pad, GstCaps * caps);
|
||||
static GstFlowReturn gst_alpha_chain (GstPad * pad, GstBuffer * buffer);
|
||||
static gboolean gst_alpha_sink_event (GstPad * pad, GstEvent * event);
|
||||
|
||||
static GstStateChangeReturn gst_alpha_change_state (GstElement * element,
|
||||
GstStateChange transition);
|
||||
|
|
@ -247,22 +254,28 @@ gst_alpha_class_init (GstAlphaClass * klass)
|
|||
DEFAULT_METHOD, (GParamFlags) G_PARAM_READWRITE));
|
||||
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ALPHA,
|
||||
g_param_spec_double ("alpha", "Alpha", "The value for the alpha channel",
|
||||
0.0, 1.0, DEFAULT_ALPHA, (GParamFlags) G_PARAM_READWRITE));
|
||||
0.0, 1.0, DEFAULT_ALPHA,
|
||||
(GParamFlags) G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
||||
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TARGET_R,
|
||||
g_param_spec_uint ("target_r", "Target Red", "The Red target", 0,
|
||||
255, DEFAULT_TARGET_R, (GParamFlags) G_PARAM_READWRITE));
|
||||
g_param_spec_uint ("target_r", "Target Red", "The Red target", 0, 255,
|
||||
DEFAULT_TARGET_R,
|
||||
(GParamFlags) G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
||||
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TARGET_G,
|
||||
g_param_spec_uint ("target_g", "Target Green", "The Green target", 0,
|
||||
255, DEFAULT_TARGET_G, (GParamFlags) G_PARAM_READWRITE));
|
||||
g_param_spec_uint ("target_g", "Target Green", "The Green target", 0, 255,
|
||||
DEFAULT_TARGET_G,
|
||||
(GParamFlags) G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
||||
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TARGET_B,
|
||||
g_param_spec_uint ("target_b", "Target Blue", "The Blue target",
|
||||
0, 255, DEFAULT_TARGET_B, (GParamFlags) G_PARAM_READWRITE));
|
||||
g_param_spec_uint ("target_b", "Target Blue", "The Blue target", 0, 255,
|
||||
DEFAULT_TARGET_B,
|
||||
(GParamFlags) G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
||||
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ANGLE,
|
||||
g_param_spec_float ("angle", "Angle", "Size of the colorcube to change",
|
||||
0.0, 90.0, DEFAULT_ANGLE, (GParamFlags) G_PARAM_READWRITE));
|
||||
0.0, 90.0, DEFAULT_ANGLE,
|
||||
(GParamFlags) G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
||||
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NOISE_LEVEL,
|
||||
g_param_spec_float ("noise_level", "Noise Level", "Size of noise radius",
|
||||
0.0, 64.0, DEFAULT_NOISE_LEVEL, (GParamFlags) G_PARAM_READWRITE));
|
||||
0.0, 64.0, DEFAULT_NOISE_LEVEL,
|
||||
(GParamFlags) G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
|
||||
|
||||
gstelement_class->change_state = gst_alpha_change_state;
|
||||
}
|
||||
|
|
@ -276,6 +289,7 @@ gst_alpha_init (GstAlpha * alpha)
|
|||
gst_element_add_pad (GST_ELEMENT (alpha), alpha->sinkpad);
|
||||
gst_pad_set_chain_function (alpha->sinkpad, gst_alpha_chain);
|
||||
gst_pad_set_setcaps_function (alpha->sinkpad, gst_alpha_sink_setcaps);
|
||||
gst_pad_set_event_function (alpha->sinkpad, gst_alpha_sink_event);
|
||||
|
||||
alpha->srcpad =
|
||||
gst_pad_new_from_static_template (&gst_alpha_src_template, "src");
|
||||
|
|
@ -288,6 +302,8 @@ gst_alpha_init (GstAlpha * alpha)
|
|||
alpha->target_b = DEFAULT_TARGET_B;
|
||||
alpha->angle = DEFAULT_ANGLE;
|
||||
alpha->noise_level = DEFAULT_NOISE_LEVEL;
|
||||
|
||||
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "alpha", 0, "Alpha adding element");
|
||||
}
|
||||
|
||||
/* do we need this function? */
|
||||
|
|
@ -790,6 +806,40 @@ gst_alpha_init_params (GstAlpha * alpha)
|
|||
alpha->kg = MIN (kgl, 127);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_alpha_sink_event (GstPad * pad, GstEvent * event)
|
||||
{
|
||||
GstAlpha *alpha;
|
||||
gboolean ret;
|
||||
|
||||
alpha = GST_ALPHA (GST_PAD_PARENT (pad));
|
||||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_FLUSH_STOP:
|
||||
gst_segment_init (&alpha->segment, GST_FORMAT_UNDEFINED);
|
||||
break;
|
||||
case GST_EVENT_NEWSEGMENT:{
|
||||
GstFormat format;
|
||||
gdouble rate, arate;
|
||||
gint64 start, stop, time;
|
||||
gboolean update;
|
||||
|
||||
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
|
||||
&start, &stop, &time);
|
||||
|
||||
gst_segment_set_newsegment_full (&alpha->segment, update, rate, arate,
|
||||
format, start, stop, time);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
ret = gst_pad_push_event (alpha->srcpad, event);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_alpha_chain (GstPad * pad, GstBuffer * buffer)
|
||||
{
|
||||
|
|
@ -797,6 +847,7 @@ gst_alpha_chain (GstPad * pad, GstBuffer * buffer)
|
|||
GstBuffer *outbuf;
|
||||
gint new_width, new_height;
|
||||
GstFlowReturn ret;
|
||||
GstClockTime timestamp;
|
||||
|
||||
alpha = GST_ALPHA (GST_PAD_PARENT (pad));
|
||||
|
||||
|
|
@ -824,6 +875,11 @@ gst_alpha_chain (GstPad * pad, GstBuffer * buffer)
|
|||
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alpha->srcpad));
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
|
||||
timestamp = gst_segment_to_stream_time (&alpha->segment, GST_FORMAT_TIME,
|
||||
GST_BUFFER_TIMESTAMP (buffer));
|
||||
GST_LOG ("Got stream time of %" GST_TIME_FORMAT, GST_TIME_ARGS (timestamp));
|
||||
if (GST_CLOCK_TIME_IS_VALID (timestamp))
|
||||
gst_object_sync_values (G_OBJECT (alpha), timestamp);
|
||||
|
||||
switch (alpha->method) {
|
||||
case ALPHA_METHOD_SET:
|
||||
|
|
@ -852,6 +908,16 @@ gst_alpha_chain (GstPad * pad, GstBuffer * buffer)
|
|||
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
/* Update last stop position in segment */
|
||||
if (GST_BUFFER_TIMESTAMP (outbuf) != GST_CLOCK_TIME_NONE) {
|
||||
GstClockTime last_stop = GST_BUFFER_TIMESTAMP (outbuf);
|
||||
|
||||
if (GST_BUFFER_DURATION (outbuf) != GST_CLOCK_TIME_NONE)
|
||||
last_stop += GST_BUFFER_DURATION (outbuf);
|
||||
|
||||
gst_segment_set_last_stop (&alpha->segment, GST_FORMAT_TIME, last_stop);
|
||||
}
|
||||
|
||||
ret = gst_pad_push (alpha->srcpad, outbuf);
|
||||
|
||||
return ret;
|
||||
|
|
@ -869,6 +935,7 @@ gst_alpha_change_state (GstElement * element, GstStateChange transition)
|
|||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||
gst_segment_init (&alpha->segment, GST_FORMAT_UNDEFINED);
|
||||
gst_alpha_init_params (alpha);
|
||||
break;
|
||||
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
||||
|
|
@ -892,6 +959,8 @@ gst_alpha_change_state (GstElement * element, GstStateChange transition)
|
|||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
{
|
||||
gst_controller_init (NULL, NULL);
|
||||
|
||||
return gst_element_register (plugin, "alpha", GST_RANK_NONE, GST_TYPE_ALPHA);
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue