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[089/906] add a "glcolorscale" element equivalent to "ffmepgcolorspace ! videoscale ! ffmpegcolorspace"

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git-svn-id: svn://svn.wobow.com/GStreamer_playground/gst-plugins-gl@501 93df14bb-0f41-7a43-8087-d3e2a2f0e464
This commit is contained in:
Julien Isorce 2008-06-10 22:59:57 +00:00 committed by Matthew Waters
parent 268d9cd781
commit cc2c8fa9cf
4 changed files with 538 additions and 1 deletions
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463
gst/gl/gstglcolorscale.c Normal file
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@ -0,0 +1,463 @@
/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstglcolorscale.h"
#define GST_CAT_DEFAULT gst_gl_colorscale_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
static const GstElementDetails element_details =
GST_ELEMENT_DETAILS ("OpenGL color scale",
"Filter/Effect",
"Colorspace converter and video scaler",
"Julien Isorce <julien.isorce@gmail.com>");
/* Source pad definition */
static GstStaticPadTemplate gst_gl_colorscale_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_xRGB ";"
GST_VIDEO_CAPS_xBGR ";"
GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, UYVY, AYUV }"))
);
/* Source pad definition */
static GstStaticPadTemplate gst_gl_colorscale_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_xRGB ";"
GST_VIDEO_CAPS_xBGR ";"
GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, UYVY, AYUV }"))
);
/* Properties */
enum
{
PROP_0
};
#define DEBUG_INIT(bla) \
GST_DEBUG_CATEGORY_INIT (gst_gl_colorscale_debug, "glcolorscale", 0, "glcolorscale element");
GST_BOILERPLATE_FULL (GstGLColorscale, gst_gl_colorscale, GstBaseTransform,
GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
static void gst_gl_colorscale_set_property (GObject* object, guint prop_id,
const GValue* value, GParamSpec* pspec);
static void gst_gl_colorscale_get_property (GObject* object, guint prop_id,
GValue* value, GParamSpec* pspec);
static void gst_gl_colorscale_reset (GstGLColorscale* colorscale);
static gboolean gst_gl_colorscale_set_caps (GstBaseTransform* bt,
GstCaps* incaps, GstCaps* outcaps);
static GstCaps *gst_gl_colorscale_transform_caps (GstBaseTransform* bt,
GstPadDirection direction, GstCaps* caps);
static void gst_gl_colorscale_fixate_caps (GstBaseTransform* base, GstPadDirection direction,
GstCaps* caps, GstCaps* othercaps);
static gboolean gst_gl_colorscale_start (GstBaseTransform* bt);
static gboolean gst_gl_colorscale_stop (GstBaseTransform* bt);
static GstFlowReturn gst_gl_colorscale_transform (GstBaseTransform* trans,
GstBuffer* inbuf, GstBuffer * outbuf);
static gboolean gst_gl_colorscale_get_unit_size (GstBaseTransform* trans,
GstCaps* caps, guint* size);
static void
gst_gl_colorscale_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_set_details (element_class, &element_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_gl_colorscale_src_pad_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_gl_colorscale_sink_pad_template));
}
static void
gst_gl_colorscale_class_init (GstGLColorscaleClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
gobject_class->set_property = gst_gl_colorscale_set_property;
gobject_class->get_property = gst_gl_colorscale_get_property;
GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
gst_gl_colorscale_transform_caps;
GST_BASE_TRANSFORM_CLASS (klass)->fixate_caps = gst_gl_colorscale_fixate_caps;
GST_BASE_TRANSFORM_CLASS (klass)->transform = gst_gl_colorscale_transform;
GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_colorscale_start;
GST_BASE_TRANSFORM_CLASS (klass)->stop = gst_gl_colorscale_stop;
GST_BASE_TRANSFORM_CLASS (klass)->set_caps = gst_gl_colorscale_set_caps;
GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size = gst_gl_colorscale_get_unit_size;
}
static void
gst_gl_colorscale_init (GstGLColorscale* colorscale, GstGLColorscaleClass * klass)
{
gst_gl_colorscale_reset (colorscale);
}
static void
gst_gl_colorscale_set_property (GObject* object, guint prop_id,
const GValue* value, GParamSpec* pspec)
{
GstGLColorscale* colorscale = GST_GL_COLORSCALE (object);
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gl_colorscale_get_property (GObject* object, guint prop_id,
GValue* value, GParamSpec* pspec)
{
//GstGLColorscale *colorscale = GST_GL_COLORSCALE (object);
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gl_colorscale_reset (GstGLColorscale* colorscale)
{
if (colorscale->display)
{
g_object_unref (colorscale->display);
colorscale->display = NULL;
}
}
static gboolean
gst_gl_colorscale_start (GstBaseTransform* bt)
{
//GstGLColorscale* colorscale = GST_GL_COLORSCALE (bt);
return TRUE;
}
static gboolean
gst_gl_colorscale_stop (GstBaseTransform* bt)
{
GstGLColorscale* colorscale = GST_GL_COLORSCALE (bt);
gst_gl_colorscale_reset (colorscale);
return TRUE;
}
static GstCaps*
gst_gl_colorscale_transform_caps (GstBaseTransform* bt,
GstPadDirection direction, GstCaps* caps)
{
GstGLColorscale* colorscale = GST_GL_COLORSCALE (bt);
GstStructure* structure = gst_caps_get_structure (caps, 0);
GstCaps* newcaps = gst_caps_new_simple ("video/x-raw-yuv", NULL);
GstCaps* newothercaps = gst_caps_new_simple ("video/x-raw-rgb", NULL);
const GValue* framerate_value = NULL;
const GValue* par_value = NULL;
GST_ERROR ("transform caps %" GST_PTR_FORMAT, caps);
framerate_value = gst_structure_get_value (structure, "framerate");
par_value = gst_structure_get_value (structure, "pixel-aspect-ratio");
gst_caps_append(newcaps, newothercaps);
structure = gst_structure_copy (gst_caps_get_structure (newcaps, 0));
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
gst_structure_set_value (structure, "framerate", framerate_value);
if (par_value)
gst_structure_set_value (structure, "pixel-aspect-ratio", par_value);
else
gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1, 1, NULL);
gst_caps_merge_structure (newcaps, gst_structure_copy (structure));
GST_ERROR ("new caps %" GST_PTR_FORMAT, newcaps);
return newcaps;
}
/* from gst-plugins-base "videoscale" code */
static void
gst_gl_colorscale_fixate_caps (GstBaseTransform* base, GstPadDirection direction,
GstCaps* caps, GstCaps* othercaps)
{
GstStructure *ins, *outs;
const GValue *from_par, *to_par;
g_return_if_fail (gst_caps_is_fixed (caps));
GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
ins = gst_caps_get_structure (caps, 0);
outs = gst_caps_get_structure (othercaps, 0);
from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
//we have both PAR but they might not be fixated
if (from_par && to_par)
{
gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
gint count = 0, w = 0, h = 0;
guint num, den;
//from_par should be fixed
g_return_if_fail (gst_value_is_fixed (from_par));
from_par_n = gst_value_get_fraction_numerator (from_par);
from_par_d = gst_value_get_fraction_denominator (from_par);
//fixate the out PAR
if (!gst_value_is_fixed (to_par))
{
GST_DEBUG_OBJECT (base, "fixating to_par to %dx%d", from_par_n,
from_par_d);
gst_structure_fixate_field_nearest_fraction (outs, "pixel-aspect-ratio",
from_par_n, from_par_d);
}
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
//f both width and height are already fixed, we can't do anything
//about it anymore
if (gst_structure_get_int (outs, "width", &w))
++count;
if (gst_structure_get_int (outs, "height", &h))
++count;
if (count == 2)
{
GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
w, h);
return;
}
gst_structure_get_int (ins, "width", &from_w);
gst_structure_get_int (ins, "height", &from_h);
if (!gst_video_calculate_display_ratio (&num, &den, from_w, from_h,
from_par_n, from_par_d, to_par_n, to_par_d))
{
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
return;
}
GST_DEBUG_OBJECT (base,
"scaling input with %dx%d and PAR %d/%d to output PAR %d/%d",
from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d);
GST_DEBUG_OBJECT (base, "resulting output should respect ratio of %d/%d",
num, den);
//now find a width x height that respects this display ratio.
//prefer those that have one of w/h the same as the incoming video
//using wd / hd = num / den
//if one of the output width or height is fixed, we work from there
if (h)
{
GST_DEBUG_OBJECT (base, "height is fixed,scaling width");
w = (guint) gst_util_uint64_scale_int (h, num, den);
}
else if (w)
{
GST_DEBUG_OBJECT (base, "width is fixed, scaling height");
h = (guint) gst_util_uint64_scale_int (w, den, num);
}
else
{
//none of width or height is fixed, figure out both of them based only on
//the input width and height
//check hd / den is an integer scale factor, and scale wd with the PAR
if (from_h % den == 0)
{
GST_DEBUG_OBJECT (base, "keeping video height");
h = from_h;
w = (guint) gst_util_uint64_scale_int (h, num, den);
}
else if (from_w % num == 0)
{
GST_DEBUG_OBJECT (base, "keeping video width");
w = from_w;
h = (guint) gst_util_uint64_scale_int (w, den, num);
}
else
{
GST_DEBUG_OBJECT (base, "approximating but keeping video height");
h = from_h;
w = (guint) gst_util_uint64_scale_int (h, num, den);
}
}
GST_DEBUG_OBJECT (base, "scaling to %dx%d", w, h);
//now fixate
gst_structure_fixate_field_nearest_int (outs, "width", w);
gst_structure_fixate_field_nearest_int (outs, "height", h);
}
else
{
gint width, height;
if (gst_structure_get_int (ins, "width", &width))
{
if (gst_structure_has_field (outs, "width"))
gst_structure_fixate_field_nearest_int (outs, "width", width);
}
if (gst_structure_get_int (ins, "height", &height)) {
if (gst_structure_has_field (outs, "height")) {
gst_structure_fixate_field_nearest_int (outs, "height", height);
}
}
}
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
}
static gboolean
gst_gl_colorscale_set_caps (GstBaseTransform* bt, GstCaps* incaps,
GstCaps* outcaps)
{
GstGLColorscale* colorscale = GST_GL_COLORSCALE (bt);
gboolean ret = FALSE;
static gint glcontext_y = 0;
GST_DEBUG ("called with %" GST_PTR_FORMAT, incaps);
ret = gst_video_format_parse_caps (outcaps, &colorscale->outVideo_format,
&colorscale->outWidth, &colorscale->outHeight);
ret |= gst_video_format_parse_caps (incaps, &colorscale->inVideo_format,
&colorscale->inWidth, &colorscale->inHeight);
if (!ret)
{
GST_DEBUG ("bad caps");
return FALSE;
}
colorscale->display = gst_gl_display_new ();
//init unvisible opengl context
gst_gl_display_initGLContext (colorscale->display,
50, glcontext_y++ * (colorscale->inHeight+50) + 50,
colorscale->inWidth, colorscale->inHeight,
colorscale->inWidth, colorscale->inHeight, 0, FALSE);
//blocking call
gst_gl_display_initDonwloadFBO (colorscale->display, colorscale->outWidth, colorscale->outHeight);
return ret;
}
static gboolean
gst_gl_colorscale_get_unit_size (GstBaseTransform* trans, GstCaps* caps,
guint* size)
{
gboolean ret;
GstStructure *structure;
gint width;
gint height;
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-raw-gl"))
{
GstVideoFormat video_format;
ret = gst_gl_buffer_format_parse_caps (caps, &video_format, &width, &height);
if (ret)
*size = gst_gl_buffer_format_get_size (video_format, width, height);
}
else
{
GstVideoFormat video_format;
ret = gst_video_format_parse_caps (caps, &video_format, &width, &height);
if (ret)
*size = gst_video_format_get_size (video_format, width, height);
}
return TRUE;
}
static GstFlowReturn
gst_gl_colorscale_transform (GstBaseTransform* trans, GstBuffer* inbuf,
GstBuffer* outbuf)
{
GstGLColorscale* colorscale = GST_GL_COLORSCALE (trans);
guint outputTexture = 0;
//blocking call
GstGLBuffer* gl_tembuf = gst_gl_buffer_new_from_video_format (colorscale->display,
colorscale->inVideo_format,
colorscale->outWidth, colorscale->outHeight,
colorscale->inWidth, colorscale->inHeight,
colorscale->inWidth, colorscale->inHeight);
GST_DEBUG ("input size %p size %d",
GST_BUFFER_DATA (inbuf), GST_BUFFER_SIZE (inbuf));
//blocking call
gst_gl_display_textureChanged(colorscale->display, colorscale->inVideo_format,
gl_tembuf->texture, gl_tembuf->texture_u, gl_tembuf->texture_v,
gl_tembuf->width, gl_tembuf->height, GST_BUFFER_DATA (inbuf), &gl_tembuf->textureGL);
GST_DEBUG ("output size %p size %d",
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
//blocking call
gst_gl_display_videoChanged(colorscale->display, colorscale->outVideo_format,
gl_tembuf->width, gl_tembuf->height, gl_tembuf->textureGL, GST_BUFFER_DATA (outbuf));
return GST_FLOW_OK;
}

68
gst/gl/gstglcolorscale.h Normal file
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@ -0,0 +1,68 @@
/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _GST_GLCOLORSCALE_H_
#define _GST_GLCOLORSCALE_H_
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/video/video.h>
#include "gstglbuffer.h"
G_BEGIN_DECLS
#define GST_TYPE_GL_COLORSCALE (gst_gl_colorscale_get_type())
#define GST_GL_COLORSCALE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_COLORSCALE,GstGLColorscale))
#define GST_IS_GL_COLORSCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_COLORSCALE))
#define GST_GL_COLORSCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_GL_COLORSCALE,GstGLColorscaleClass))
#define GST_IS_GL_COLORSCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_GL_COLORSCALE))
#define GST_GL_COLORSCALE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_GL_COLORSCALE,GstGLColorscaleClass))
typedef struct _GstGLColorscale GstGLColorscale;
typedef struct _GstGLColorscaleClass GstGLColorscaleClass;
struct _GstGLColorscale
{
GstBaseTransform base_transform;
GstPad *srcpad;
GstPad *sinkpad;
GstGLDisplay *display;
GstVideoFormat inVideo_format;
gint inWidth;
gint inHeight;
GstVideoFormat outVideo_format;
gint outWidth;
gint outHeight;
};
struct _GstGLColorscaleClass
{
GstBaseTransformClass base_transform_class;
};
GType gst_gl_colorscale_get_type (void);
G_END_DECLS
#endif /* _GST_GLCOLORSCALE_H_ */

2
gst/gl/gstglfiltercube.c
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@ -30,7 +30,7 @@ GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
static const GstElementDetails element_details =
GST_ELEMENT_DETAILS ("OpenGL cube filter",
"Filter/Effect",
"Put input texture on the cube faces",
"Map input texture on the 6 cube faces",
"Julien Isorce <julien.isorce@gmail.com>");
enum

6
gst/gl/gstopengl.c
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@ -27,6 +27,7 @@
#include "gstglfilterapp.h"
#include "gstglvideomaker.h"
#include "gstglimagesink.h"
#include "gstglcolorscale.h"
#define GST_CAT_DEFAULT gst_gl_gstgl_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
@ -62,6 +63,11 @@ plugin_init (GstPlugin * plugin)
return FALSE;
}
if (!gst_element_register (plugin, "glcolorscale",
GST_RANK_NONE, GST_TYPE_GL_COLORSCALE)) {
return FALSE;
}
return TRUE;
}