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gstreamer/subprojects/gstreamer-vaapi/gst/vaapi/gstvaapipostprocutil.c

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/*
* gstvaapipostprocutil.h - VA-API video post processing utilities
*
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2005-2012 David Schleef <ds@schleef.org>
* Copyright (C) 2016 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
* Author: Victor Jaquez <victorx.jaquez@intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include <gst/vaapi/gstvaapifilter.h>
#include "gstvaapipostprocutil.h"
#include "gstvaapipluginutil.h"
#define GST_CAT_DEFAULT (GST_VAAPI_PLUGIN_BASE (postproc)->debug_category)
/* if format property is set */
static void
_transform_format (GstVaapiPostproc * postproc, GstCapsFeatures * features,
GstStructure * structure)
{
GValue value = G_VALUE_INIT;
if (postproc->format == DEFAULT_FORMAT)
return;
if (!gst_caps_features_is_equal (features,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
&& !gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE))
return;
if (!gst_vaapi_value_set_format (&value, postproc->format))
return;
gst_structure_set_value (structure, "format", &value);
g_value_unset (&value);
}
static void
_set_int (GValue * value, gint val)
{
g_value_init (value, G_TYPE_INT);
g_value_set_int (value, val);
}
static void
_set_int_range (GValue * value)
{
g_value_init (value, GST_TYPE_INT_RANGE);
gst_value_set_int_range (value, 1, G_MAXINT);
}
static void
_transform_frame_size (GstVaapiPostproc * postproc, GstStructure * structure)
{
GValue width = G_VALUE_INIT;
GValue height = G_VALUE_INIT;
if (postproc->width && postproc->height) {
_set_int (&width, postproc->width);
_set_int (&height, postproc->height);
} else if (postproc->width) {
_set_int (&width, postproc->width);
_set_int_range (&height);
} else if (postproc->height) {
_set_int_range (&width);
_set_int (&height, postproc->height);
} else {
_set_int_range (&width);
_set_int_range (&height);
}
gst_structure_set_value (structure, "width", &width);
gst_structure_set_value (structure, "height", &height);
}
/**
* gst_vaapipostproc_transform_srccaps:
* @postproc: a #GstVaapiPostproc instance
*
* Early apply transformation of the src pad caps according to the set
* properties.
*
* Returns: A new allocated #GstCaps
**/
GstCaps *
gst_vaapipostproc_transform_srccaps (GstVaapiPostproc * postproc)
{
GstCaps *out_caps;
GstStructure *structure;
GstCapsFeatures *features;
gint i, n;
out_caps = gst_caps_new_empty ();
n = gst_caps_get_size (postproc->allowed_srcpad_caps);
for (i = 0; i < n; i++) {
structure = gst_caps_get_structure (postproc->allowed_srcpad_caps, i);
features = gst_caps_get_features (postproc->allowed_srcpad_caps, i);
/* make copy */
structure = gst_structure_copy (structure);
if (postproc->keep_aspect)
gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1,
1, NULL);
_transform_format (postproc, features, structure);
_transform_frame_size (postproc, structure);
gst_caps_append_structure_full (out_caps, structure,
gst_caps_features_copy (features));
}
return out_caps;
}
gboolean
is_deinterlace_enabled (GstVaapiPostproc * postproc, GstVideoInfo * vip)
{
gboolean deinterlace;
switch (postproc->deinterlace_mode) {
case GST_VAAPI_DEINTERLACE_MODE_AUTO:
deinterlace = GST_VIDEO_INFO_IS_INTERLACED (vip);
break;
case GST_VAAPI_DEINTERLACE_MODE_INTERLACED:
deinterlace = TRUE;
break;
default:
deinterlace = FALSE;
break;
}
return deinterlace;
}
static gboolean
_fixate_frame_size (GstVaapiPostproc * postproc, GstVideoInfo * vinfo,
GstStructure * outs)
{
const GValue *to_par;
GValue tpar = G_VALUE_INIT;
gboolean ret;
ret = TRUE;
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
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;
}
/* 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_n = GST_VIDEO_INFO_PAR_N (vinfo);
from_par_d = GST_VIDEO_INFO_PAR_D (vinfo);
from_w = GST_VIDEO_INFO_WIDTH (vinfo);
from_h = GST_VIDEO_INFO_HEIGHT (vinfo);
if (postproc->has_vpp) {
/* adjust for crop settings */
from_w -= postproc->crop_left + postproc->crop_right;
from_h -= postproc->crop_top + postproc->crop_bottom;
/* compensate for rotation if needed */
switch (gst_vaapi_filter_get_video_direction (postproc->filter)) {
case GST_VIDEO_ORIENTATION_90R:
case GST_VIDEO_ORIENTATION_90L:
case GST_VIDEO_ORIENTATION_UL_LR:
case GST_VIDEO_ORIENTATION_UR_LL:
G_PRIMITIVE_SWAP (gint, from_w, from_h);
G_PRIMITIVE_SWAP (gint, from_par_n, from_par_d);
default:
break;
}
}
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 (postproc,
"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 (postproc, "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))
goto overflow_error;
GST_DEBUG_OBJECT (postproc, "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 (postproc, "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 (postproc, "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))
goto overflow_error;
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_structure_free (tmp);
goto overflow_error;
}
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))
goto overflow_error;
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 (postproc, "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 (postproc, "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))
goto overflow_error;
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_structure_free (tmp);
goto overflow_error;
}
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))
goto overflow_error;
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))
goto overflow_error;
/* 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_structure_free (tmp);
goto overflow_error;
}
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))
goto overflow_error;
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:
if (to_par == &tpar)
g_value_unset (&tpar);
return ret;
/* ERRORS */
overflow_error:
{
ret = FALSE;
GST_ELEMENT_ERROR (postproc, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
}
static gboolean
_fixate_frame_rate (GstVaapiPostproc * postproc, GstVideoInfo * vinfo,
GstStructure * outs)
{
gint fps_n, fps_d;
fps_n = GST_VIDEO_INFO_FPS_N (vinfo);
fps_d = GST_VIDEO_INFO_FPS_D (vinfo);
if (is_deinterlace_enabled (postproc, vinfo)) {
if (!gst_util_fraction_multiply (fps_n, fps_d, 2, 1, &fps_n, &fps_d))
goto overflow_error;
}
gst_structure_set (outs, "framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL);
return TRUE;
/* ERRORS */
overflow_error:
{
GST_ELEMENT_ERROR (postproc, CORE, NEGOTIATION, (NULL),
("Error calculating the output framerate - integer overflow"));
return FALSE;
}
}
static gboolean
_set_multiview_mode (GstVaapiPostproc * postproc, GstVideoInfo * vinfo,
GstStructure * outs)
{
const gchar *caps_str;
caps_str =
gst_video_multiview_mode_to_caps_string (GST_VIDEO_INFO_MULTIVIEW_MODE
(vinfo));
if (!caps_str)
return TRUE;
gst_structure_set (outs, "multiview-mode", G_TYPE_STRING, caps_str,
"multiview-flags", GST_TYPE_VIDEO_MULTIVIEW_FLAGSET,
GST_VIDEO_INFO_MULTIVIEW_FLAGS (vinfo), GST_FLAG_SET_MASK_EXACT, NULL);
if (GST_VIDEO_INFO_VIEWS (vinfo) > 1) {
gst_structure_set (outs, "views", G_TYPE_INT, GST_VIDEO_INFO_VIEWS (vinfo),
NULL);
}
return TRUE;
}
static gboolean
_set_colorimetry (GstVaapiPostproc * postproc, GstVideoInfo * sinkinfo,
GstVideoFormat format, GstStructure * outs)
{
GstVideoInfo vinfo;
GstVideoColorimetry colorimetry;
gchar *color;
gint width, height;
if (!gst_structure_get_int (outs, "width", &width)
|| !gst_structure_get_int (outs, "height", &height))
return FALSE;
/* Use the sink resolution and the src format to correctly determine the
* default src colorimetry. */
gst_video_info_set_format (&vinfo, format, GST_VIDEO_INFO_WIDTH (sinkinfo),
GST_VIDEO_INFO_HEIGHT (sinkinfo));
if (GST_VIDEO_INFO_CHROMA_SITE (&vinfo) != GST_VIDEO_CHROMA_SITE_UNKNOWN) {
gst_structure_set (outs, "chroma-site", G_TYPE_STRING,
gst_video_chroma_to_string (GST_VIDEO_INFO_CHROMA_SITE (&vinfo)), NULL);
}
/* if outs structure already specifies colorimetry, use it */
if (gst_structure_has_field (outs, "colorimetry"))
return TRUE;
/* make sure we set the RGB matrix for RGB formats */
colorimetry = GST_VIDEO_INFO_COLORIMETRY (&vinfo);
if (GST_VIDEO_FORMAT_INFO_IS_RGB (vinfo.finfo) &&
colorimetry.matrix != GST_VIDEO_COLOR_MATRIX_RGB) {
GST_WARNING ("invalid matrix %d for RGB format, using RGB",
colorimetry.matrix);
colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_RGB;
}
if ((color = gst_video_colorimetry_to_string (&colorimetry))) {
gst_structure_set (outs, "colorimetry", G_TYPE_STRING, color, NULL);
g_free (color);
}
return TRUE;
}
static gboolean
_set_interlace_mode (GstVaapiPostproc * postproc, GstVideoInfo * vinfo,
GstStructure * outs)
{
const gchar *interlace_mode = NULL;
if (is_deinterlace_enabled (postproc, vinfo)) {
interlace_mode = "progressive";
} else {
interlace_mode =
gst_video_interlace_mode_to_string (GST_VIDEO_INFO_INTERLACE_MODE
(vinfo));
}
if (!interlace_mode)
return FALSE;
gst_structure_set (outs, "interlace-mode", G_TYPE_STRING, interlace_mode,
NULL);
return TRUE;
}
static gboolean
_set_preferred_format (GstStructure * outs, GstVideoFormat format)
{
GValue value = G_VALUE_INIT;
if (format == GST_VIDEO_FORMAT_UNKNOWN || format == GST_VIDEO_FORMAT_ENCODED)
return FALSE;
if (!gst_vaapi_value_set_format (&value, format))
return FALSE;
gst_structure_set_value (outs, "format", &value);
g_value_unset (&value);
return TRUE;
}
static GstCaps *
_get_preferred_caps (GstVaapiPostproc * postproc, GstVideoInfo * vinfo,
GstCaps * srccaps)
{
GstPad *srcpad;
GstVideoFormat format;
GstVaapiCapsFeature f;
const gchar *feature;
GstStructure *structure;
GstCapsFeatures *features;
GstCaps *outcaps;
gint i, n;
format = GST_VIDEO_FORMAT_UNKNOWN;
srcpad = GST_BASE_TRANSFORM_SRC_PAD (postproc);
f = gst_vaapi_find_preferred_caps_feature (srcpad, srccaps, &format);
if (f == GST_VAAPI_CAPS_FEATURE_NOT_NEGOTIATED)
return NULL;
feature = gst_vaapi_caps_feature_to_string (f);
if (!feature)
feature = GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY;
n = gst_caps_get_size (srccaps);
for (i = 0; i < n; i++) {
structure = gst_caps_get_structure (srccaps, i);
features = gst_caps_get_features (srccaps, i);
if (!gst_caps_features_is_any (features)
&& gst_caps_features_contains (features, feature))
break;
}
if (i >= n)
goto invalid_caps;
/* make copy */
structure = gst_structure_copy (structure);
if (!_set_preferred_format (structure, format))
goto fixate_failed;
if (!_fixate_frame_size (postproc, vinfo, structure))
goto fixate_failed;
if (!_fixate_frame_rate (postproc, vinfo, structure))
goto fixate_failed;
_set_multiview_mode (postproc, vinfo, structure);
if (!_set_colorimetry (postproc, vinfo, format, structure))
goto fixate_failed;
if (!_set_interlace_mode (postproc, vinfo, structure))
goto interlace_mode_failed;
outcaps = gst_caps_new_empty ();
gst_caps_append_structure_full (outcaps, structure,
gst_caps_features_copy (features));
/* we don't need to do format conversion if GL_TEXTURE_UPLOAD_META
* is negotiated */
if (f == GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META) {
postproc->format = DEFAULT_FORMAT;
} else if (postproc->format != format) {
postproc->format = format;
}
return gst_caps_fixate (outcaps);
/* ERRORS */
fixate_failed:
{
GST_WARNING_OBJECT (postproc, "Could not fixate src caps");
gst_structure_free (structure);
return NULL;
}
invalid_caps:
{
GST_WARNING_OBJECT (postproc, "No valid src caps found");
return NULL;
}
interlace_mode_failed:
{
GST_WARNING_OBJECT (postproc, "Invalid sink caps interlace mode");
return NULL;
}
}
/**
* gst_vaapipostproc_fixate_srccaps:
* @postproc: a #GstVaapiPostproc instance
* @sinkcaps: fixed #GstCaps from sink pad
* @srccaps: #GstCaps from src pad to fixate
*
* Given @srccaps and @sinkcaps returns a new allocated #GstCaps with
* the fixated caps for the src pad.
*
* Returns: A new allocated #GstCaps
**/
GstCaps *
gst_vaapipostproc_fixate_srccaps (GstVaapiPostproc * postproc,
GstCaps * sinkcaps, GstCaps * srccaps)
{
GstVideoInfo vi;
if (!gst_video_info_from_caps (&vi, sinkcaps))
return NULL;
return _get_preferred_caps (postproc, &vi, srccaps);
}
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