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gst/smpte/: Port to 0.10 some more.

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Original commit message from CVS:
* gst/smpte/gstmask.h:
* gst/smpte/gstsmpte.c: (gst_smpte_class_init),
(gst_smpte_setcaps), (gst_smpte_init), (gst_smpte_reset),
(gst_smpte_collected), (gst_smpte_set_property),
(gst_smpte_get_property), (gst_smpte_change_state), (plugin_init):
* gst/smpte/gstsmpte.h:
Port to 0.10 some more.
Added duration property to specify the duration of the transition.
Make framerate a fraction.
Deprecate fps property, we only use negotiated fps.
Added docs.
Fix collectpad usage.
Reset state in READY.
Send NEWSEGMENT event.
Fix racy updates of object properties.
Added debug category.
Fixes #383323.
This commit is contained in:
Wim Taymans 2006-12-07 17:30:03 +00:00
parent c37faa76a9
commit 6b01538bca
4 changed files with 211 additions and 68 deletions
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20
ChangeLog
View file

@ -1,3 +1,23 @@
2006-12-07 Wim Taymans <wim@fluendo.com>
* gst/smpte/gstmask.h:
* gst/smpte/gstsmpte.c: (gst_smpte_class_init),
(gst_smpte_setcaps), (gst_smpte_init), (gst_smpte_reset),
(gst_smpte_collected), (gst_smpte_set_property),
(gst_smpte_get_property), (gst_smpte_change_state), (plugin_init):
* gst/smpte/gstsmpte.h:
Port to 0.10 some more.
Added duration property to specify the duration of the transition.
Make framerate a fraction.
Deprecate fps property, we only use negotiated fps.
Added docs.
Fix collectpad usage.
Reset state in READY.
Send NEWSEGMENT event.
Fix racy updates of object properties.
Added debug category.
Fixes #383323.
2006-12-06 Wim Taymans <wim@fluendo.com>
Patch by: Sjoerd Simons <sjoerd at luon dot net>

1
gst/smpte/gstmask.h
View file

@ -23,7 +23,6 @@
#include <gst/gst.h>
typedef struct _GstMask GstMask;
typedef struct _GstMaskDefinition GstMaskDefinition;

227
gst/smpte/gstsmpte.c
View file

@ -17,6 +17,36 @@
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-smpte
* @short_description: Takes to video frames and applies an SMPTE transition
* effect on them.
*
* <refsect2>
* <para>
* smpte can accept I420 video streams with the same width, height and
* framerate. The two incomming buffers are blended together using an effect
* specific alpha mask.
* </para>
* <para>
* The depth property defines the presision in bits of the mask. A higher
* presision will create a mask with smoother gradients in order to avoid
* banding.
* </para>
* <title>Sample pipelines</title>
* <para>
* Here is a pipeline to demonstrate the smpte transition :
* <programlisting>
* gst-launch -v videotestsrc pattern=1 ! smpte name=s border=20000 type=234
* duration=2000000000 ! ffmpegcolorspace ! ximagesink videotestsrc ! s.
* </programlisting>
* This shows a pinwheel transition a from a snow videotestsrc to an smpte
* pattern videotestsrc. The transition will take 2 seconds to complete. The
* edges of the transition are smoothed with a 20000 big border.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@ -25,6 +55,9 @@
#include <gst/video/video.h>
#include "paint.h"
GST_DEBUG_CATEGORY_STATIC (gst_smpte_debug);
#define GST_CAT_DEFAULT gst_smpte_debug
/* elementfactory information */
static const GstElementDetails smpte_details =
GST_ELEMENT_DETAILS ("SMPTE transitions",
@ -64,13 +97,21 @@ enum
LAST_SIGNAL
};
#define DEFAULT_PROP_TYPE 1
#define DEFAULT_PROP_BORDER 0
#define DEFAULT_PROP_DEPTH 16
#define DEFAULT_PROP_FPS 0.
#define DEFAULT_PROP_DURATION GST_SECOND
enum
{
ARG_0,
ARG_TYPE,
ARG_BORDER,
ARG_DEPTH,
ARG_FPS
PROP_0,
PROP_TYPE,
PROP_BORDER,
PROP_DEPTH,
PROP_FPS,
PROP_DURATION,
PROP_LAST,
};
#define GST_TYPE_SMPTE_TRANSITION_TYPE (gst_smpte_transition_type_get_type())
@ -119,6 +160,9 @@ static void gst_smpte_set_property (GObject * object, guint prop_id,
static void gst_smpte_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_smpte_change_state (GstElement * element,
GstStateChange transition);
static GstElementClass *parent_class = NULL;
/*static guint gst_smpte_signals[LAST_SIGNAL] = { 0 }; */
@ -177,20 +221,27 @@ gst_smpte_class_init (GstSMPTEClass * klass)
_gst_mask_init ();
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TYPE,
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TYPE,
g_param_spec_enum ("type", "Type", "The type of transition to use",
GST_TYPE_SMPTE_TRANSITION_TYPE, 1, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FPS,
GST_TYPE_SMPTE_TRANSITION_TYPE, DEFAULT_PROP_TYPE,
G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FPS,
g_param_spec_float ("fps", "FPS",
"Frames per second if no input files are given", 0., G_MAXFLOAT, 25.,
G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BORDER,
"Frames per second if no input files are given (deprecated)", 0.,
G_MAXFLOAT, DEFAULT_PROP_FPS, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BORDER,
g_param_spec_int ("border", "Border",
"The border width of the transition", 0, G_MAXINT, 0,
G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEPTH,
"The border width of the transition", 0, G_MAXINT,
DEFAULT_PROP_BORDER, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEPTH,
g_param_spec_int ("depth", "Depth", "Depth of the mask in bits", 1, 24,
16, G_PARAM_READWRITE));
DEFAULT_PROP_DEPTH, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DURATION,
g_param_spec_uint64 ("duration", "Duration",
"Duration of the transition effect in nanoseconds", 0, G_MAXUINT64,
DEFAULT_PROP_DURATION, G_PARAM_READWRITE));
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_smpte_change_state);
}
/* wht yel cya grn mag red blu blk -I Q */
@ -246,15 +297,24 @@ gst_smpte_setcaps (GstPad * pad, GstCaps * caps)
ret = gst_structure_get_int (structure, "width", &smpte->width);
ret &= gst_structure_get_int (structure, "height", &smpte->height);
ret &= gst_structure_get_double (structure, "framerate", &smpte->fps);
ret &= gst_structure_get_fraction (structure, "framerate",
&smpte->fps_num, &smpte->fps_denom);
if (!ret)
return FALSE;
gst_smpte_update_mask (smpte, smpte->type, smpte->depth, smpte->width,
/* for backward compat, we store these here */
smpte->fps = ((gdouble) smpte->fps_num) / smpte->fps_denom;
/* figure out the duration in frames */
smpte->end_position = gst_util_uint64_scale (smpte->duration,
smpte->fps_num, GST_SECOND * smpte->fps_denom);
GST_DEBUG_OBJECT (smpte, "duration: %d frames", smpte->end_position);
ret = gst_smpte_update_mask (smpte, smpte->type, smpte->depth, smpte->width,
smpte->height);
/* forward to the next plugin */
return TRUE;
return ret;
}
static void
@ -284,16 +344,22 @@ gst_smpte_init (GstSMPTE * smpte)
gst_collect_pads_add_pad (smpte->collect, smpte->sinkpad2,
sizeof (GstCollectData));
smpte->width = 320;
smpte->height = 200;
smpte->fps = 25.;
smpte->duration = 512;
smpte->fps = DEFAULT_PROP_FPS;
smpte->type = DEFAULT_PROP_TYPE;
smpte->border = DEFAULT_PROP_BORDER;
smpte->depth = DEFAULT_PROP_DEPTH;
smpte->duration = DEFAULT_PROP_DURATION;
smpte->fps_num = 0;
smpte->fps_denom = 1;
}
static void
gst_smpte_reset (GstSMPTE * smpte)
{
smpte->width = -1;
smpte->height = -1;
smpte->position = 0;
smpte->type = 1;
smpte->border = 0;
smpte->depth = 16;
gst_smpte_update_mask (smpte, smpte->type, smpte->depth, smpte->width,
smpte->height);
smpte->end_position = 0;
}
static void
@ -345,7 +411,11 @@ gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte)
GstBuffer *in1 = NULL, *in2 = NULL;
GSList *collected;
ts = smpte->position * GST_SECOND / smpte->fps;
if (smpte->fps_num == 0)
goto not_negotiated;
ts = gst_util_uint64_scale_int (smpte->position * GST_SECOND,
smpte->fps_denom, smpte->fps_num);
for (collected = pads->data; collected; collected = g_slist_next (collected)) {
GstCollectData *data;
@ -359,15 +429,17 @@ gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte)
}
if (in1 == NULL) {
/* if no input, make picture black */
in1 = gst_buffer_new_and_alloc (smpte->width * smpte->height * 3);
fill_i420 (GST_BUFFER_DATA (in1), smpte->width, smpte->height, 7);
}
if (in2 == NULL) {
/* if no input, make picture white */
in2 = gst_buffer_new_and_alloc (smpte->width * smpte->height * 3);
fill_i420 (GST_BUFFER_DATA (in2), smpte->width, smpte->height, 0);
}
if (smpte->position < smpte->duration) {
if (smpte->position < smpte->end_position) {
outbuf = gst_buffer_new_and_alloc (smpte->width * smpte->height * 3);
/* set caps if not done yet */
@ -378,10 +450,15 @@ gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte)
gst_caps_copy (gst_static_caps_get (&gst_smpte_src_template.
static_caps));
gst_caps_set_simple (caps, "width", G_TYPE_INT, smpte->width, "height",
G_TYPE_INT, smpte->height, "framerate", G_TYPE_DOUBLE, smpte->fps,
NULL);
G_TYPE_INT, smpte->height, "framerate", GST_TYPE_FRACTION,
smpte->fps_num, smpte->fps_denom, NULL);
gst_pad_set_caps (smpte->srcpad, caps);
gst_pad_push_event (smpte->srcpad,
gst_event_new_new_segment_full (FALSE,
1.0, 1.0, GST_FORMAT_TIME, 0, -1, 0));
}
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (smpte->srcpad));
@ -391,7 +468,7 @@ gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte)
smpte->mask, smpte->width, smpte->height,
smpte->border,
((1 << smpte->depth) + smpte->border) *
smpte->position / smpte->duration);
smpte->position / smpte->end_position);
} else {
outbuf = in2;
@ -408,6 +485,14 @@ gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte)
GST_BUFFER_TIMESTAMP (outbuf) = ts;
return gst_pad_push (smpte->srcpad, outbuf);
/* ERRORS */
not_negotiated:
{
GST_ELEMENT_ERROR (smpte, CORE, NEGOTIATION, (NULL),
("No input format negotiated"));
return GST_FLOW_NOT_NEGOTIATED;
}
}
static void
@ -419,28 +504,21 @@ gst_smpte_set_property (GObject * object, guint prop_id,
smpte = GST_SMPTE (object);
switch (prop_id) {
case ARG_TYPE:
{
gint type = g_value_get_enum (value);
gst_smpte_update_mask (smpte, type, smpte->depth,
smpte->width, smpte->height);
case PROP_TYPE:
smpte->type = g_value_get_enum (value);
break;
}
case ARG_BORDER:
case PROP_BORDER:
smpte->border = g_value_get_int (value);
break;
case ARG_FPS:
case PROP_FPS:
smpte->fps = g_value_get_float (value);
break;
case ARG_DEPTH:
{
gint depth = g_value_get_int (value);
gst_smpte_update_mask (smpte, smpte->type, depth,
smpte->width, smpte->height);
case PROP_DEPTH:
smpte->depth = g_value_get_int (value);
break;
case PROP_DURATION:
smpte->duration = g_value_get_uint64 (value);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -456,30 +534,67 @@ gst_smpte_get_property (GObject * object, guint prop_id,
smpte = GST_SMPTE (object);
switch (prop_id) {
case ARG_TYPE:
if (smpte->mask) {
g_value_set_enum (value, smpte->mask->type);
}
case PROP_TYPE:
g_value_set_enum (value, smpte->type);
break;
case ARG_FPS:
case PROP_FPS:
g_value_set_float (value, smpte->fps);
break;
case ARG_BORDER:
case PROP_BORDER:
g_value_set_int (value, smpte->border);
break;
case ARG_DEPTH:
case PROP_DEPTH:
g_value_set_int (value, smpte->depth);
break;
case PROP_DURATION:
g_value_set_uint64 (value, smpte->duration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_smpte_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstSMPTE *smpte;
smpte = GST_SMPTE (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_smpte_reset (smpte);
GST_LOG_OBJECT (smpte, "starting collectpads");
gst_collect_pads_start (smpte->collect);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_LOG_OBJECT (smpte, "stopping collectpads");
gst_collect_pads_stop (smpte->collect);
break;
default:
break;
}
ret = parent_class->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_smpte_reset (smpte);
break;
default:
break;
}
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_smpte_debug, "smpte", 0,
"SMPTE transition effect");
return gst_element_register (plugin, "smpte", GST_RANK_NONE, GST_TYPE_SMPTE);
}

31
gst/smpte/gstsmpte.h
View file

@ -24,6 +24,8 @@
#include <gst/gst.h>
#include <gst/base/gstcollectpads.h>
G_BEGIN_DECLS
#include "gstmask.h"
#define GST_TYPE_SMPTE \
@ -43,23 +45,29 @@ typedef struct _GstSMPTEClass GstSMPTEClass;
struct _GstSMPTE {
GstElement element;
/* pads */
GstPad *srcpad,
*sinkpad1,
*sinkpad2;
GstCollectPads *collect;
/* properties */
gint type;
gint border;
gint depth;
guint64 duration;
/* negotiated format */
gint format;
gint width;
gint height;
gdouble fps;
gint fps_num;
gint fps_denom;
gint duration;
/* state of the effect */
gint position;
GstPad *srcpad,
*sinkpad1,
*sinkpad2;
GstCollectPads *collect;
gint type;
gint border;
gint depth;
gint end_position;
GstMask *mask;
};
@ -67,4 +75,5 @@ struct _GstSMPTEClass {
GstElementClass parent_class;
};
G_END_DECLS
#endif /* __GST_SMPTE_H__ */