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gstreamer/gst/videoconvert/gstvideoconvert.c
Vivia Nikolaidou ad55d3ce9d video-converter: Make fast path work for equivalent transfer functions 
For example, BT709, BT601, and BT2020_10 all have theoretically
different transfer functions, but the same function in practice. In
these cases, we should use the fast path for negotiating. Also,
BT2020_12 is essentially the same as the other three, just with one more
decimal point, so it gives the same result for fewer bits. This is now
also aliased to the former three.

Also make videoconvert do passthrough if the caps have equivalent
transfer functions but are otherwise matching.

As of the previous commit, we write the correct transfer function for
BT601, instead of the (functionally identical but different ISO code)
transfer function for BT709. Files created using GStreamer prior to that
commit write the wrong transfer function for BT601 and are, strictly
speaking, 2:4:5:4 instead. However, this commit takes care of
negotiation, so that conversions from/to the same transfer function are
done using the fast path.

Fixes #783

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/724>
2020-07-03 11:57:49 +03:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* This file:
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2010 David Schleef <ds@schleef.org>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-videoconvert
* @title: videoconvert
*
* Convert video frames between a great variety of video formats.
*
* ## Example launch line
* |[
* gst-launch-1.0 -v videotestsrc ! video/x-raw,format=YUY2 ! videoconvert ! autovideosink
* ]|
* This will output a test video (generated in YUY2 format) in a video
* window. If the video sink selected does not support YUY2 videoconvert will
* automatically convert the video to a format understood by the video sink.
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstvideoconvert.h"
#include <gst/video/video.h>
#include <gst/video/gstvideometa.h>
#include <gst/video/gstvideopool.h>
#include <string.h>
GST_DEBUG_CATEGORY (videoconvert_debug);
#define GST_CAT_DEFAULT videoconvert_debug
GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE);
static GQuark _colorspace_quark;
#define gst_video_convert_parent_class parent_class
G_DEFINE_TYPE (GstVideoConvert, gst_video_convert, GST_TYPE_VIDEO_FILTER);
#define DEFAULT_PROP_DITHER GST_VIDEO_DITHER_BAYER
#define DEFAULT_PROP_DITHER_QUANTIZATION 1
#define DEFAULT_PROP_CHROMA_RESAMPLER GST_VIDEO_RESAMPLER_METHOD_LINEAR
#define DEFAULT_PROP_ALPHA_MODE GST_VIDEO_ALPHA_MODE_COPY
#define DEFAULT_PROP_ALPHA_VALUE 1.0
#define DEFAULT_PROP_CHROMA_MODE GST_VIDEO_CHROMA_MODE_FULL
#define DEFAULT_PROP_MATRIX_MODE GST_VIDEO_MATRIX_MODE_FULL
#define DEFAULT_PROP_GAMMA_MODE GST_VIDEO_GAMMA_MODE_NONE
#define DEFAULT_PROP_PRIMARIES_MODE GST_VIDEO_PRIMARIES_MODE_NONE
#define DEFAULT_PROP_N_THREADS 1
enum
{
PROP_0,
PROP_DITHER,
PROP_DITHER_QUANTIZATION,
PROP_CHROMA_RESAMPLER,
PROP_ALPHA_MODE,
PROP_ALPHA_VALUE,
PROP_CHROMA_MODE,
PROP_MATRIX_MODE,
PROP_GAMMA_MODE,
PROP_PRIMARIES_MODE,
PROP_N_THREADS
};
#define CSP_VIDEO_CAPS GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ";" \
GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS_ALL)
static GstStaticPadTemplate gst_video_convert_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (CSP_VIDEO_CAPS)
);
static GstStaticPadTemplate gst_video_convert_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (CSP_VIDEO_CAPS)
);
static void gst_video_convert_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_video_convert_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static gboolean gst_video_convert_set_info (GstVideoFilter * filter,
GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
GstVideoInfo * out_info);
static GstFlowReturn gst_video_convert_transform_frame (GstVideoFilter * filter,
GstVideoFrame * in_frame, GstVideoFrame * out_frame);
/* copies the given caps */
static GstCaps *
gst_video_convert_caps_remove_format_info (GstCaps * caps)
{
GstStructure *st;
GstCapsFeatures *f;
gint i, n;
GstCaps *res;
res = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
st = gst_caps_get_structure (caps, i);
f = gst_caps_get_features (caps, i);
/* If this is already expressed by the existing caps
* skip this structure */
if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
continue;
st = gst_structure_copy (st);
/* Only remove format info for the cases when we can actually convert */
if (!gst_caps_features_is_any (f)
&& gst_caps_features_is_equal (f,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
NULL);
gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
}
return res;
}
/*
* This is an incomplete matrix of in formats and a score for the preferred output
* format.
*
* out: RGB24 RGB16 ARGB AYUV YUV444 YUV422 YUV420 YUV411 YUV410 PAL GRAY
* in
* RGB24 0 2 1 2 2 3 4 5 6 7 8
* RGB16 1 0 1 2 2 3 4 5 6 7 8
* ARGB 2 3 0 1 4 5 6 7 8 9 10
* AYUV 3 4 1 0 2 5 6 7 8 9 10
* YUV444 2 4 3 1 0 5 6 7 8 9 10
* YUV422 3 5 4 2 1 0 6 7 8 9 10
* YUV420 4 6 5 3 2 1 0 7 8 9 10
* YUV411 4 6 5 3 2 1 7 0 8 9 10
* YUV410 6 8 7 5 4 3 2 1 0 9 10
* PAL 1 3 2 6 4 6 7 8 9 0 10
* GRAY 1 4 3 2 1 5 6 7 8 9 0
*
* PAL or GRAY are never preferred, if we can we would convert to PAL instead
* of GRAY, though
* less subsampling is preferred and if any, preferably horizontal
* We would like to keep the alpha, even if we would need to to colorspace conversion
* or lose depth.
*/
#define SCORE_FORMAT_CHANGE 1
#define SCORE_DEPTH_CHANGE 1
#define SCORE_ALPHA_CHANGE 1
#define SCORE_CHROMA_W_CHANGE 1
#define SCORE_CHROMA_H_CHANGE 1
#define SCORE_PALETTE_CHANGE 1
#define SCORE_COLORSPACE_LOSS 2 /* RGB <-> YUV */
#define SCORE_DEPTH_LOSS 4 /* change bit depth */
#define SCORE_ALPHA_LOSS 8 /* lose the alpha channel */
#define SCORE_CHROMA_W_LOSS 16 /* vertical subsample */
#define SCORE_CHROMA_H_LOSS 32 /* horizontal subsample */
#define SCORE_PALETTE_LOSS 64 /* convert to palette format */
#define SCORE_COLOR_LOSS 128 /* convert to GRAY */
#define COLORSPACE_MASK (GST_VIDEO_FORMAT_FLAG_YUV | \
GST_VIDEO_FORMAT_FLAG_RGB | GST_VIDEO_FORMAT_FLAG_GRAY)
#define ALPHA_MASK (GST_VIDEO_FORMAT_FLAG_ALPHA)
#define PALETTE_MASK (GST_VIDEO_FORMAT_FLAG_PALETTE)
/* calculate how much loss a conversion would be */
static void
score_value (GstBaseTransform * base, const GstVideoFormatInfo * in_info,
const GValue * val, gint * min_loss, const GstVideoFormatInfo ** out_info)
{
const gchar *fname;
const GstVideoFormatInfo *t_info;
GstVideoFormatFlags in_flags, t_flags;
gint loss;
fname = g_value_get_string (val);
t_info = gst_video_format_get_info (gst_video_format_from_string (fname));
if (!t_info)
return;
/* accept input format immediately without loss */
if (in_info == t_info) {
*min_loss = 0;
*out_info = t_info;
return;
}
loss = SCORE_FORMAT_CHANGE;
in_flags = GST_VIDEO_FORMAT_INFO_FLAGS (in_info);
in_flags &= ~GST_VIDEO_FORMAT_FLAG_LE;
in_flags &= ~GST_VIDEO_FORMAT_FLAG_COMPLEX;
in_flags &= ~GST_VIDEO_FORMAT_FLAG_UNPACK;
t_flags = GST_VIDEO_FORMAT_INFO_FLAGS (t_info);
t_flags &= ~GST_VIDEO_FORMAT_FLAG_LE;
t_flags &= ~GST_VIDEO_FORMAT_FLAG_COMPLEX;
t_flags &= ~GST_VIDEO_FORMAT_FLAG_UNPACK;
if ((t_flags & PALETTE_MASK) != (in_flags & PALETTE_MASK)) {
loss += SCORE_PALETTE_CHANGE;
if (t_flags & PALETTE_MASK)
loss += SCORE_PALETTE_LOSS;
}
if ((t_flags & COLORSPACE_MASK) != (in_flags & COLORSPACE_MASK)) {
loss += SCORE_COLORSPACE_LOSS;
if (t_flags & GST_VIDEO_FORMAT_FLAG_GRAY)
loss += SCORE_COLOR_LOSS;
}
if ((t_flags & ALPHA_MASK) != (in_flags & ALPHA_MASK)) {
loss += SCORE_ALPHA_CHANGE;
if (in_flags & ALPHA_MASK)
loss += SCORE_ALPHA_LOSS;
}
if ((in_info->h_sub[1]) != (t_info->h_sub[1])) {
loss += SCORE_CHROMA_H_CHANGE;
if ((in_info->h_sub[1]) < (t_info->h_sub[1]))
loss += SCORE_CHROMA_H_LOSS;
}
if ((in_info->w_sub[1]) != (t_info->w_sub[1])) {
loss += SCORE_CHROMA_W_CHANGE;
if ((in_info->w_sub[1]) < (t_info->w_sub[1]))
loss += SCORE_CHROMA_W_LOSS;
}
if ((in_info->bits) != (t_info->bits)) {
loss += SCORE_DEPTH_CHANGE;
if ((in_info->bits) > (t_info->bits))
loss += SCORE_DEPTH_LOSS;
}
GST_DEBUG_OBJECT (base, "score %s -> %s = %d",
GST_VIDEO_FORMAT_INFO_NAME (in_info),
GST_VIDEO_FORMAT_INFO_NAME (t_info), loss);
if (loss < *min_loss) {
GST_DEBUG_OBJECT (base, "found new best %d", loss);
*out_info = t_info;
*min_loss = loss;
}
}
static void
gst_video_convert_fixate_format (GstBaseTransform * base, GstCaps * caps,
GstCaps * result)
{
GstStructure *ins, *outs;
const gchar *in_format;
const GstVideoFormatInfo *in_info, *out_info = NULL;
gint min_loss = G_MAXINT;
guint i, capslen;
ins = gst_caps_get_structure (caps, 0);
in_format = gst_structure_get_string (ins, "format");
if (!in_format)
return;
GST_DEBUG_OBJECT (base, "source format %s", in_format);
in_info =
gst_video_format_get_info (gst_video_format_from_string (in_format));
if (!in_info)
return;
outs = gst_caps_get_structure (result, 0);
capslen = gst_caps_get_size (result);
GST_DEBUG_OBJECT (base, "iterate %d structures", capslen);
for (i = 0; i < capslen; i++) {
GstStructure *tests;
const GValue *format;
tests = gst_caps_get_structure (result, i);
format = gst_structure_get_value (tests, "format");
/* should not happen */
if (format == NULL)
continue;
if (GST_VALUE_HOLDS_LIST (format)) {
gint j, len;
len = gst_value_list_get_size (format);
GST_DEBUG_OBJECT (base, "have %d formats", len);
for (j = 0; j < len; j++) {
const GValue *val;
val = gst_value_list_get_value (format, j);
if (G_VALUE_HOLDS_STRING (val)) {
score_value (base, in_info, val, &min_loss, &out_info);
if (min_loss == 0)
break;
}
}
} else if (G_VALUE_HOLDS_STRING (format)) {
score_value (base, in_info, format, &min_loss, &out_info);
}
}
if (out_info)
gst_structure_set (outs, "format", G_TYPE_STRING,
GST_VIDEO_FORMAT_INFO_NAME (out_info), NULL);
}
static GstCaps *
gst_video_convert_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstCaps *result;
GST_DEBUG_OBJECT (trans, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
result = gst_caps_intersect (othercaps, caps);
if (gst_caps_is_empty (result)) {
gst_caps_unref (result);
result = othercaps;
} else {
gst_caps_unref (othercaps);
}
GST_DEBUG_OBJECT (trans, "now fixating %" GST_PTR_FORMAT, result);
result = gst_caps_make_writable (result);
gst_video_convert_fixate_format (trans, caps, result);
/* fixate remaining fields */
result = gst_caps_fixate (result);
if (direction == GST_PAD_SINK) {
if (gst_caps_is_subset (caps, result)) {
gst_caps_replace (&result, caps);
}
}
return result;
}
static gboolean
gst_video_convert_filter_meta (GstBaseTransform * trans, GstQuery * query,
GType api, const GstStructure * params)
{
/* This element cannot passthrough the crop meta, because it would convert the
* wrong sub-region of the image, and worst, our output image may not be large
* enough for the crop to be applied later */
if (api == GST_VIDEO_CROP_META_API_TYPE)
return FALSE;
/* propose all other metadata upstream */
return TRUE;
}
/* The caps can be transformed into any other caps with format info removed.
* However, we should prefer passthrough, so if passthrough is possible,
* put it first in the list. */
static GstCaps *
gst_video_convert_transform_caps (GstBaseTransform * btrans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstCaps *tmp, *tmp2;
GstCaps *result;
/* Get all possible caps that we can transform to */
tmp = gst_video_convert_caps_remove_format_info (caps);
if (filter) {
tmp2 = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (tmp);
tmp = tmp2;
}
result = tmp;
GST_DEBUG_OBJECT (btrans, "transformed %" GST_PTR_FORMAT " into %"
GST_PTR_FORMAT, caps, result);
return result;
}
static gboolean
gst_video_convert_transform_meta (GstBaseTransform * trans, GstBuffer * outbuf,
GstMeta * meta, GstBuffer * inbuf)
{
const GstMetaInfo *info = meta->info;
gboolean ret;
if (gst_meta_api_type_has_tag (info->api, _colorspace_quark)) {
/* don't copy colorspace specific metadata, FIXME, we need a MetaTransform
* for the colorspace metadata. */
ret = FALSE;
} else {
/* copy other metadata */
ret = TRUE;
}
return ret;
}
static gboolean
gst_video_convert_set_info (GstVideoFilter * filter,
GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
GstVideoInfo * out_info)
{
GstVideoConvert *space;
GstBaseTransformClass *gstbasetransform_class =
GST_BASE_TRANSFORM_GET_CLASS (filter);
GstVideoInfo tmp_info;
space = GST_VIDEO_CONVERT_CAST (filter);
if (space->convert) {
gst_video_converter_free (space->convert);
space->convert = NULL;
}
/* these must match */
if (in_info->width != out_info->width || in_info->height != out_info->height
|| in_info->fps_n != out_info->fps_n || in_info->fps_d != out_info->fps_d)
goto format_mismatch;
/* if present, these must match too */
if (in_info->par_n != out_info->par_n || in_info->par_d != out_info->par_d)
goto format_mismatch;
/* if present, these must match too */
if (in_info->interlace_mode != out_info->interlace_mode)
goto format_mismatch;
/* if the only thing different in the caps is the transfer function, and
* we're converting between equivalent transfer functions, do passthrough */
tmp_info = *in_info;
tmp_info.colorimetry.transfer = out_info->colorimetry.transfer;
if (gst_video_info_is_equal (&tmp_info, out_info)) {
if (gst_video_color_transfer_is_equivalent (in_info->colorimetry.transfer,
in_info->finfo->bits, out_info->colorimetry.transfer,
out_info->finfo->bits)) {
gstbasetransform_class->passthrough_on_same_caps = FALSE;
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), TRUE);
return TRUE;
}
}
gstbasetransform_class->passthrough_on_same_caps = TRUE;
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), FALSE);
space->convert = gst_video_converter_new (in_info, out_info,
gst_structure_new ("GstVideoConvertConfig",
GST_VIDEO_CONVERTER_OPT_DITHER_METHOD, GST_TYPE_VIDEO_DITHER_METHOD,
space->dither,
GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION, G_TYPE_UINT,
space->dither_quantization,
GST_VIDEO_CONVERTER_OPT_CHROMA_RESAMPLER_METHOD,
GST_TYPE_VIDEO_RESAMPLER_METHOD, space->chroma_resampler,
GST_VIDEO_CONVERTER_OPT_ALPHA_MODE,
GST_TYPE_VIDEO_ALPHA_MODE, space->alpha_mode,
GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE,
G_TYPE_DOUBLE, space->alpha_value,
GST_VIDEO_CONVERTER_OPT_CHROMA_MODE,
GST_TYPE_VIDEO_CHROMA_MODE, space->chroma_mode,
GST_VIDEO_CONVERTER_OPT_MATRIX_MODE,
GST_TYPE_VIDEO_MATRIX_MODE, space->matrix_mode,
GST_VIDEO_CONVERTER_OPT_GAMMA_MODE,
GST_TYPE_VIDEO_GAMMA_MODE, space->gamma_mode,
GST_VIDEO_CONVERTER_OPT_PRIMARIES_MODE,
GST_TYPE_VIDEO_PRIMARIES_MODE, space->primaries_mode,
GST_VIDEO_CONVERTER_OPT_THREADS, G_TYPE_UINT,
space->n_threads, NULL));
if (space->convert == NULL)
goto no_convert;
GST_DEBUG ("reconfigured %d %d", GST_VIDEO_INFO_FORMAT (in_info),
GST_VIDEO_INFO_FORMAT (out_info));
return TRUE;
/* ERRORS */
format_mismatch:
{
GST_ERROR_OBJECT (space, "input and output formats do not match");
return FALSE;
}
no_convert:
{
GST_ERROR_OBJECT (space, "could not create converter");
return FALSE;
}
}
static void
gst_video_convert_finalize (GObject * obj)
{
GstVideoConvert *space = GST_VIDEO_CONVERT (obj);
if (space->convert) {
gst_video_converter_free (space->convert);
}
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_video_convert_class_init (GstVideoConvertClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseTransformClass *gstbasetransform_class =
(GstBaseTransformClass *) klass;
GstVideoFilterClass *gstvideofilter_class = (GstVideoFilterClass *) klass;
gobject_class->set_property = gst_video_convert_set_property;
gobject_class->get_property = gst_video_convert_get_property;
gobject_class->finalize = gst_video_convert_finalize;
gst_element_class_add_static_pad_template (gstelement_class,
&gst_video_convert_src_template);
gst_element_class_add_static_pad_template (gstelement_class,
&gst_video_convert_sink_template);
gst_element_class_set_static_metadata (gstelement_class,
"Colorspace converter", "Filter/Converter/Video",
"Converts video from one colorspace to another",
"GStreamer maintainers <gstreamer-devel@lists.freedesktop.org>");
gstbasetransform_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_video_convert_transform_caps);
gstbasetransform_class->fixate_caps =
GST_DEBUG_FUNCPTR (gst_video_convert_fixate_caps);
gstbasetransform_class->filter_meta =
GST_DEBUG_FUNCPTR (gst_video_convert_filter_meta);
gstbasetransform_class->transform_meta =
GST_DEBUG_FUNCPTR (gst_video_convert_transform_meta);
gstbasetransform_class->passthrough_on_same_caps = TRUE;
gstvideofilter_class->set_info =
GST_DEBUG_FUNCPTR (gst_video_convert_set_info);
gstvideofilter_class->transform_frame =
GST_DEBUG_FUNCPTR (gst_video_convert_transform_frame);
g_object_class_install_property (gobject_class, PROP_DITHER,
g_param_spec_enum ("dither", "Dither", "Apply dithering while converting",
gst_video_dither_method_get_type (), DEFAULT_PROP_DITHER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DITHER_QUANTIZATION,
g_param_spec_uint ("dither-quantization", "Dither Quantize",
"Quantizer to use", 0, G_MAXUINT, DEFAULT_PROP_DITHER_QUANTIZATION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CHROMA_RESAMPLER,
g_param_spec_enum ("chroma-resampler", "Chroma resampler",
"Chroma resampler method", gst_video_resampler_method_get_type (),
DEFAULT_PROP_CHROMA_RESAMPLER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ALPHA_MODE,
g_param_spec_enum ("alpha-mode", "Alpha Mode",
"Alpha Mode to use", gst_video_alpha_mode_get_type (),
DEFAULT_PROP_ALPHA_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ALPHA_VALUE,
g_param_spec_double ("alpha-value", "Alpha Value",
"Alpha Value to use", 0.0, 1.0,
DEFAULT_PROP_ALPHA_VALUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CHROMA_MODE,
g_param_spec_enum ("chroma-mode", "Chroma Mode", "Chroma Resampling Mode",
gst_video_chroma_mode_get_type (), DEFAULT_PROP_CHROMA_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MATRIX_MODE,
g_param_spec_enum ("matrix-mode", "Matrix Mode", "Matrix Conversion Mode",
gst_video_matrix_mode_get_type (), DEFAULT_PROP_MATRIX_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_GAMMA_MODE,
g_param_spec_enum ("gamma-mode", "Gamma Mode", "Gamma Conversion Mode",
gst_video_gamma_mode_get_type (), DEFAULT_PROP_GAMMA_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PRIMARIES_MODE,
g_param_spec_enum ("primaries-mode", "Primaries Mode",
"Primaries Conversion Mode", gst_video_primaries_mode_get_type (),
DEFAULT_PROP_PRIMARIES_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_N_THREADS,
g_param_spec_uint ("n-threads", "Threads",
"Maximum number of threads to use", 0, G_MAXUINT,
DEFAULT_PROP_N_THREADS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_video_convert_init (GstVideoConvert * space)
{
space->dither = DEFAULT_PROP_DITHER;
space->dither_quantization = DEFAULT_PROP_DITHER_QUANTIZATION;
space->chroma_resampler = DEFAULT_PROP_CHROMA_RESAMPLER;
space->alpha_mode = DEFAULT_PROP_ALPHA_MODE;
space->alpha_value = DEFAULT_PROP_ALPHA_VALUE;
space->chroma_mode = DEFAULT_PROP_CHROMA_MODE;
space->matrix_mode = DEFAULT_PROP_MATRIX_MODE;
space->gamma_mode = DEFAULT_PROP_GAMMA_MODE;
space->primaries_mode = DEFAULT_PROP_PRIMARIES_MODE;
space->n_threads = DEFAULT_PROP_N_THREADS;
}
void
gst_video_convert_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoConvert *csp;
csp = GST_VIDEO_CONVERT (object);
switch (property_id) {
case PROP_DITHER:
csp->dither = g_value_get_enum (value);
break;
case PROP_CHROMA_RESAMPLER:
csp->chroma_resampler = g_value_get_enum (value);
break;
case PROP_ALPHA_MODE:
csp->alpha_mode = g_value_get_enum (value);
break;
case PROP_ALPHA_VALUE:
csp->alpha_value = g_value_get_double (value);
break;
case PROP_CHROMA_MODE:
csp->chroma_mode = g_value_get_enum (value);
break;
case PROP_MATRIX_MODE:
csp->matrix_mode = g_value_get_enum (value);
break;
case PROP_GAMMA_MODE:
csp->gamma_mode = g_value_get_enum (value);
break;
case PROP_PRIMARIES_MODE:
csp->primaries_mode = g_value_get_enum (value);
break;
case PROP_DITHER_QUANTIZATION:
csp->dither_quantization = g_value_get_uint (value);
break;
case PROP_N_THREADS:
csp->n_threads = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_video_convert_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstVideoConvert *csp;
csp = GST_VIDEO_CONVERT (object);
switch (property_id) {
case PROP_DITHER:
g_value_set_enum (value, csp->dither);
break;
case PROP_CHROMA_RESAMPLER:
g_value_set_enum (value, csp->chroma_resampler);
break;
case PROP_ALPHA_MODE:
g_value_set_enum (value, csp->alpha_mode);
break;
case PROP_ALPHA_VALUE:
g_value_set_double (value, csp->alpha_value);
break;
case PROP_CHROMA_MODE:
g_value_set_enum (value, csp->chroma_mode);
break;
case PROP_MATRIX_MODE:
g_value_set_enum (value, csp->matrix_mode);
break;
case PROP_GAMMA_MODE:
g_value_set_enum (value, csp->gamma_mode);
break;
case PROP_PRIMARIES_MODE:
g_value_set_enum (value, csp->primaries_mode);
break;
case PROP_DITHER_QUANTIZATION:
g_value_set_uint (value, csp->dither_quantization);
break;
case PROP_N_THREADS:
g_value_set_uint (value, csp->n_threads);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GstFlowReturn
gst_video_convert_transform_frame (GstVideoFilter * filter,
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
GstVideoConvert *space;
space = GST_VIDEO_CONVERT_CAST (filter);
GST_CAT_DEBUG_OBJECT (CAT_PERFORMANCE, filter,
"doing colorspace conversion from %s -> to %s",
GST_VIDEO_INFO_NAME (&filter->in_info),
GST_VIDEO_INFO_NAME (&filter->out_info));
gst_video_converter_frame (space->convert, in_frame, out_frame);
return GST_FLOW_OK;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (videoconvert_debug, "videoconvert", 0,
"Colorspace Converter");
GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE");
_colorspace_quark = g_quark_from_static_string ("colorspace");
return gst_element_register (plugin, "videoconvert",
GST_RANK_NONE, GST_TYPE_VIDEO_CONVERT);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
videoconvert, "Colorspace conversion", plugin_init, VERSION, GST_LICENSE,
GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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