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[596/906] colorscale: port over to filter base class

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This commit is contained in:
Matthew Waters 2012-09-25 18:07:23 +10:00
parent 30ec55853e
commit 5d10051e03
2 changed files with 23 additions and 672 deletions
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675
gst/gl/gstglcolorscale.c
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@ -53,22 +53,6 @@
#define GST_CAT_DEFAULT gst_gl_colorscale_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
/* 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_GL_VIDEO_CAPS)
);
/* 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_GL_VIDEO_CAPS)
);
/* Properties */
enum
{
@ -79,36 +63,28 @@ enum
GST_DEBUG_CATEGORY_INIT (gst_gl_colorscale_debug, "glcolorscale", 0, "glcolorscale element");
G_DEFINE_TYPE_WITH_CODE (GstGLColorscale, gst_gl_colorscale,
GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
GST_TYPE_GL_FILTER, 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, GstCaps * filter);
static GstCaps *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, gsize * size);
static gboolean gst_gl_colorscale_filter_texture (GstGLFilter * filter,
guint in_tex, guint out_tex);
static void gst_gl_colorscale_callback (gint width, gint height,
guint texture, gpointer stuff);
static void
gst_gl_colorscale_class_init (GstGLColorscaleClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstGLFilterClass *filter_class;
gobject_class = (GObjectClass *) klass;
element_class = GST_ELEMENT_CLASS (klass);
filter_class = GST_GL_FILTER_CLASS (klass);
gobject_class->set_property = gst_gl_colorscale_set_property;
gobject_class->get_property = gst_gl_colorscale_get_property;
@ -117,34 +93,18 @@ gst_gl_colorscale_class_init (GstGLColorscaleClass * klass)
"Filter/Effect", "Colorspace converter and video scaler",
"Julien Isorce <julien.isorce@gmail.com>");
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));
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;
filter_class->filter_texture = gst_gl_colorscale_filter_texture;
}
static void
gst_gl_colorscale_init (GstGLColorscale * colorscale)
{
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);
@ -156,8 +116,6 @@ 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);
@ -165,621 +123,28 @@ gst_gl_colorscale_get_property (GObject * object, guint prop_id,
}
}
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, GstCaps * filter)
{
//GstGLColorscale* colorscale = GST_GL_COLORSCALE (bt);
GstStructure *structure;
GstCaps *newcaps;
const GValue *framerate_value;
const GValue *par_value;
GST_DEBUG ("transform caps %" GST_PTR_FORMAT, caps);
structure = gst_caps_get_structure (caps, 0);
newcaps = gst_caps_new_empty_simple ("video/x-raw");
framerate_value = gst_structure_get_value (structure, "framerate");
par_value = gst_structure_get_value (structure, "pixel-aspect-ratio");
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);
newcaps = gst_caps_merge_structure (newcaps, gst_structure_copy (structure));
GST_DEBUG ("new caps %" GST_PTR_FORMAT, newcaps);
return newcaps;
}
/* from gst-plugins-base "videoscale" code */
static GstCaps *
gst_gl_colorscale_fixate_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstStructure *ins, *outs;
const GValue *from_par, *to_par;
GValue fpar = { 0, }, tpar = {
0,};
othercaps = gst_caps_truncate (othercaps);
othercaps = gst_caps_make_writable (othercaps);
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");
/* If we're fixating from the sinkpad we always set the PAR and
* assume that missing PAR on the sinkpad means 1/1 and
* missing PAR on the srcpad means undefined
*/
if (direction == GST_PAD_SINK) {
if (!from_par) {
g_value_init (&fpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&fpar, 1, 1);
from_par = &fpar;
}
if (!to_par) {
g_value_init (&tpar, GST_TYPE_FRACTION_RANGE);
gst_value_set_fraction_range_full (&tpar, 1, G_MAXINT, G_MAXINT, 1);
to_par = &tpar;
}
} else {
if (!to_par) {
g_value_init (&tpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&tpar, 1, 1);
to_par = &tpar;
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
NULL);
}
if (!from_par) {
g_value_init (&fpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&fpar, 1, 1);
from_par = &fpar;
}
}
/* we have both PAR but they might not be fixated */
{
gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
gint w = 0, h = 0;
gint from_dar_n, from_dar_d;
gint num, den;
/* from_par should be fixed */
g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps);
from_par_n = gst_value_get_fraction_numerator (from_par);
from_par_d = gst_value_get_fraction_denominator (from_par);
gst_structure_get_int (ins, "width", &from_w);
gst_structure_get_int (ins, "height", &from_h);
gst_structure_get_int (outs, "width", &w);
gst_structure_get_int (outs, "height", &h);
/* if both width and height are already fixed, we can't do anything
* about it anymore */
if (w && h) {
guint n, d;
GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
w, h);
if (!gst_value_is_fixed (to_par)) {
if (gst_video_calculate_display_ratio (&n, &d, from_w, from_h,
from_par_n, from_par_d, w, h)) {
GST_DEBUG_OBJECT (base, "fixating to_par to %dx%d", n, d);
if (gst_structure_has_field (outs, "pixel-aspect-ratio"))
gst_structure_fixate_field_nearest_fraction (outs,
"pixel-aspect-ratio", n, d);
else if (n != d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
n, d, NULL);
}
}
goto done;
}
/* Calculate input DAR */
if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d,
&from_dar_n, &from_dar_d)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
GST_DEBUG_OBJECT (base, "Input DAR is %d/%d", from_dar_n, from_dar_d);
/* If either width or height are fixed there's not much we
* can do either except choosing a height or width and PAR
* that matches the DAR as good as possible
*/
if (h) {
GstStructure *tmp;
gint set_w, set_par_n, set_par_d;
GST_DEBUG_OBJECT (base, "height is fixed (%d)", h);
/* If the PAR is fixed too, there's not much to do
* except choosing the width that is nearest to the
* width with the same DAR */
if (gst_value_is_fixed (to_par)) {
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
to_par_n, &num, &den)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
w = (guint) gst_util_uint64_scale_int (h, num, den);
gst_structure_fixate_field_nearest_int (outs, "width", w);
goto done;
}
/* The PAR is not fixed and it's quite likely that we can set
* an arbitrary PAR. */
/* Check if we can keep the input width */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
gst_structure_get_int (tmp, "width", &set_w);
/* Might have failed but try to keep the DAR nonetheless by
* adjusting the PAR */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, h, set_w,
&to_par_n, &to_par_d)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
gst_structure_free (tmp);
goto done;
}
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
to_par_n, to_par_d);
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
&set_par_d);
gst_structure_free (tmp);
/* Check if the adjusted PAR is accepted */
if (set_par_n == to_par_n && set_par_d == to_par_d) {
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "width", G_TYPE_INT, set_w,
"pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d,
NULL);
goto done;
}
/* Otherwise scale the width to the new PAR and check if the
* adjusted with is accepted. If all that fails we can't keep
* the DAR */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
set_par_n, &num, &den)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
w = (guint) gst_util_uint64_scale_int (h, num, den);
gst_structure_fixate_field_nearest_int (outs, "width", w);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
} else if (w) {
GstStructure *tmp;
gint set_h, set_par_n, set_par_d;
GST_DEBUG_OBJECT (base, "width is fixed (%d)", w);
/* If the PAR is fixed too, there's not much to do
* except choosing the height that is nearest to the
* height with the same DAR */
if (gst_value_is_fixed (to_par)) {
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
to_par_n, &num, &den)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
h = (guint) gst_util_uint64_scale_int (w, den, num);
gst_structure_fixate_field_nearest_int (outs, "height", h);
goto done;
}
/* The PAR is not fixed and it's quite likely that we can set
* an arbitrary PAR. */
/* Check if we can keep the input height */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
gst_structure_get_int (tmp, "height", &set_h);
/* Might have failed but try to keep the DAR nonetheless by
* adjusting the PAR */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, w,
&to_par_n, &to_par_d)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
gst_structure_free (tmp);
goto done;
}
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
to_par_n, to_par_d);
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
&set_par_d);
gst_structure_free (tmp);
/* Check if the adjusted PAR is accepted */
if (set_par_n == to_par_n && set_par_d == to_par_d) {
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "height", G_TYPE_INT, set_h,
"pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d,
NULL);
goto done;
}
/* Otherwise scale the height to the new PAR and check if the
* adjusted with is accepted. If all that fails we can't keep
* the DAR */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
set_par_n, &num, &den)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
h = (guint) gst_util_uint64_scale_int (w, den, num);
gst_structure_fixate_field_nearest_int (outs, "height", h);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
} else if (gst_value_is_fixed (to_par)) {
GstStructure *tmp;
gint set_h, set_w, f_h, f_w;
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
/* Calculate scale factor for the PAR change */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n,
to_par_d, &num, &den)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
/* Try to keep the input height (because of interlacing) */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
gst_structure_get_int (tmp, "height", &set_h);
/* This might have failed but try to scale the width
* to keep the DAR nonetheless */
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
gst_structure_fixate_field_nearest_int (tmp, "width", w);
gst_structure_get_int (tmp, "width", &set_w);
gst_structure_free (tmp);
/* We kept the DAR and the height is nearest to the original height */
if (set_w == w) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
goto done;
}
f_h = set_h;
f_w = set_w;
/* If the former failed, try to keep the input width at least */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
gst_structure_get_int (tmp, "width", &set_w);
/* This might have failed but try to scale the width
* to keep the DAR nonetheless */
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
gst_structure_fixate_field_nearest_int (tmp, "height", h);
gst_structure_get_int (tmp, "height", &set_h);
gst_structure_free (tmp);
/* We kept the DAR and the width is nearest to the original width */
if (set_h == h) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
goto done;
}
/* If all this failed, keep the height that was nearest to the orignal
* height and the nearest possible width. This changes the DAR but
* there's not much else to do here.
*/
gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT,
f_h, NULL);
goto done;
} else {
GstStructure *tmp;
gint set_h, set_w, set_par_n, set_par_d, tmp2;
/* width, height and PAR are not fixed but passthrough is not possible */
/* First try to keep the height and width as good as possible
* and scale PAR */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
gst_structure_get_int (tmp, "height", &set_h);
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
gst_structure_get_int (tmp, "width", &set_w);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w,
&to_par_n, &to_par_d)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
to_par_n, to_par_d);
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
&set_par_d);
gst_structure_free (tmp);
if (set_par_n == to_par_n && set_par_d == to_par_d) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* Otherwise try to scale width to keep the DAR with the set
* PAR and height */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
set_par_n, &num, &den)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "width", w);
gst_structure_get_int (tmp, "width", &tmp2);
gst_structure_free (tmp);
if (tmp2 == w) {
gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* ... or try the same with the height */
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", h);
gst_structure_get_int (tmp, "height", &tmp2);
gst_structure_free (tmp);
if (tmp2 == h) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, tmp2, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* If all fails we can't keep the DAR and take the nearest values
* for everything from the first try */
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
}
}
done:
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
if (from_par == &fpar)
g_value_unset (&fpar);
if (to_par == &tpar)
g_value_unset (&tpar);
return othercaps;
}
static gboolean
gst_gl_colorscale_set_caps (GstBaseTransform * bt, GstCaps * incaps,
GstCaps * outcaps)
gst_gl_colorscale_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLColorscale *colorscale;
GstVideoInfo in_vinfo, out_vinfo;
gboolean ret;
GST_DEBUG ("called with %" GST_PTR_FORMAT, incaps);
colorscale = GST_GL_COLORSCALE (filter);
ret = FALSE;
colorscale = GST_GL_COLORSCALE (bt);
ret = gst_video_info_from_caps (&out_vinfo, outcaps);
ret |= gst_video_info_from_caps (&in_vinfo, incaps);
if (!ret) {
GST_DEBUG ("bad caps");
return FALSE;
}
colorscale->output_video_format = GST_VIDEO_INFO_FORMAT (&out_vinfo);
colorscale->output_video_width = GST_VIDEO_INFO_WIDTH (&out_vinfo);
colorscale->output_video_height = GST_VIDEO_INFO_HEIGHT (&out_vinfo);
colorscale->input_video_format = GST_VIDEO_INFO_FORMAT (&in_vinfo);
colorscale->input_video_width = GST_VIDEO_INFO_WIDTH (&in_vinfo);
colorscale->input_video_height = GST_VIDEO_INFO_HEIGHT (&in_vinfo);
colorscale->display = gst_gl_display_new ();
//init unvisible opengl context
ret = gst_gl_display_create_context (colorscale->display, 0);
if (!ret) {
GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (colorscale->display), (NULL));
return FALSE;
}
//blocking call, init colorspace conversion if needed
ret = gst_gl_display_init_upload (colorscale->display,
colorscale->input_video_format, colorscale->output_video_width,
colorscale->output_video_height, colorscale->input_video_width,
colorscale->input_video_height);
if (!ret) {
GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (colorscale->display), (NULL));
return FALSE;
}
//blocking call, init colorspace conversion if needed
ret = gst_gl_display_init_download (colorscale->display,
colorscale->output_video_format, colorscale->output_video_width,
colorscale->output_video_height);
if (!ret)
GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (colorscale->display), (NULL));
return ret;
}
static gboolean
gst_gl_colorscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
gsize * size)
{
GstVideoInfo vinfo;
if (gst_video_info_from_caps (&vinfo, caps)) {
*size = GST_VIDEO_INFO_SIZE (&vinfo);
}
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_colorscale_callback, colorscale);
return TRUE;
}
static GstFlowReturn
gst_gl_colorscale_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf)
static void
gst_gl_colorscale_callback (gint width, gint height, guint texture,
gpointer stuff)
{
/*GstGLColorscale *colorscale; */
gboolean ok;
GstGLFilter *filter = GST_GL_FILTER (stuff);
/*colorscale = GST_GL_COLORSCALE (trans); */
ok = TRUE;
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
/* FIXME: implement using GstGLMeta */
/*//blocking call
GstGLBuffer *gl_temp_buffer = gst_gl_buffer_new (colorscale->display,
colorscale->output_video_width, colorscale->output_video_height);
GST_DEBUG ("input size %p size %d",
GST_BUFFER_DATA (inbuf), GST_BUFFER_SIZE (inbuf));
//blocking call
ok =
gst_gl_display_do_upload (colorscale->display, gl_temp_buffer->texture,
colorscale->input_video_width, colorscale->input_video_height,
GST_BUFFER_DATA (inbuf));
GST_DEBUG ("output size %p size %d",
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
//blocking call
ok &=
gst_gl_display_do_download (colorscale->display, gl_temp_buffer->texture,
gl_temp_buffer->width, gl_temp_buffer->height, GST_BUFFER_DATA (outbuf));
gst_buffer_unref (GST_BUFFER_CAST (gl_temp_buffer));
*/
if (ok)
return GST_FLOW_OK;
else
return GST_FLOW_EOS;
gst_gl_filter_draw_texture (filter, texture, width, height);
}

20
gst/gl/gstglcolorscale.h
View file

@ -22,10 +22,9 @@
#define _GST_GLCOLORSCALE_H_
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/video/video.h>
#include "gstglmeta.h"
#include "gstglfilter.h"
G_BEGIN_DECLS
@ -42,25 +41,12 @@ typedef struct _GstGLColorscaleClass GstGLColorscaleClass;
struct _GstGLColorscale
{
GstBaseTransform base_transform;
GstPad *srcpad;
GstPad *sinkpad;
GstGLDisplay *display;
GstVideoFormat input_video_format;
gint input_video_width;
gint input_video_height;
GstVideoFormat output_video_format;
gint output_video_width;
gint output_video_height;
GstGLFilter filter;
};
struct _GstGLColorscaleClass
{
GstBaseTransformClass base_transform_class;
GstGLFilterClass filter_class;
};
GType gst_gl_colorscale_get_type (void);