--- /dev/null
+/* GStreamer
+ * Copyright (C) 2020 Thibault Saunier <tsaunier@igalia.com>
+ * Copyright (C) 2022 Seungha Yang <seungha@centricular.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., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gst/cuda/gstcudautils.h>
+#include "gstcudaconvertscale.h"
+#include "cuda-converter.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_cuda_base_convert_debug);
+#define GST_CAT_DEFAULT gst_cuda_base_convert_debug
+
+#define GST_CUDA_CONVET_FORMATS \
+ "{ I420, YV12, NV12, NV21, P010_10LE, P016_LE, I420_10LE, Y444, Y444_16LE, " \
+ "BGRA, RGBA, RGBx, BGRx, ARGB, ABGR, RGB, BGR, BGR10A2_LE, RGB10A2_LE, " \
+ "Y42B, I422_10LE, I422_12LE }"
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
+ (GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY, GST_CUDA_CONVET_FORMATS))
+ );
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
+ (GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY, GST_CUDA_CONVET_FORMATS))
+ );
+
+struct _GstCudaBaseConvert
+{
+ GstCudaBaseTransform parent;
+
+ GstCudaConverter *converter;
+
+ gint borders_h;
+ gint borders_w;
+ gboolean add_borders;
+};
+
+static void gst_cuda_base_convert_dispose (GObject * object);
+static GstCaps *gst_cuda_base_convert_transform_caps (GstBaseTransform * trans,
+ GstPadDirection direction, GstCaps * caps, GstCaps * filter);
+static GstCaps *gst_cuda_base_convert_fixate_caps (GstBaseTransform * trans,
+ GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
+static gboolean
+gst_cuda_base_convert_propose_allocation (GstBaseTransform * trans,
+ GstQuery * decide_query, GstQuery * query);
+static gboolean gst_cuda_base_convert_decide_allocation (GstBaseTransform *
+ trans, GstQuery * query);
+static gboolean gst_cuda_base_convert_filter_meta (GstBaseTransform * trans,
+ GstQuery * query, GType api, const GstStructure * params);
+static GstFlowReturn gst_cuda_base_convert_transform (GstBaseTransform * trans,
+ GstBuffer * inbuf, GstBuffer * outbuf);
+static gboolean gst_cuda_base_convert_set_info (GstCudaBaseTransform * btrans,
+ GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
+ GstVideoInfo * out_info);
+
+/**
+ * GstCudaBaseConvert:
+ *
+ * A baseclass implementation for cuda convert elements
+ *
+ * Since: 1.22
+ */
+#define gst_cuda_base_convert_parent_class parent_class
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstCudaBaseConvert,
+ gst_cuda_base_convert, GST_TYPE_CUDA_BASE_TRANSFORM,
+ GST_DEBUG_CATEGORY_INIT (gst_cuda_base_convert_debug,
+ "cudaconvertscale", 0, "CUDA Base Filter"));
+
+static void
+gst_cuda_base_convert_class_init (GstCudaBaseConvertClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+ GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass);
+ GstCudaBaseTransformClass *btrans_class =
+ GST_CUDA_BASE_TRANSFORM_CLASS (klass);
+
+ gobject_class->dispose = gst_cuda_base_convert_dispose;
+
+ gst_element_class_add_static_pad_template (element_class, &sink_template);
+ gst_element_class_add_static_pad_template (element_class, &src_template);
+
+ trans_class->passthrough_on_same_caps = TRUE;
+
+ trans_class->transform_caps =
+ GST_DEBUG_FUNCPTR (gst_cuda_base_convert_transform_caps);
+ trans_class->fixate_caps =
+ GST_DEBUG_FUNCPTR (gst_cuda_base_convert_fixate_caps);
+ trans_class->propose_allocation =
+ GST_DEBUG_FUNCPTR (gst_cuda_base_convert_propose_allocation);
+ trans_class->decide_allocation =
+ GST_DEBUG_FUNCPTR (gst_cuda_base_convert_decide_allocation);
+ trans_class->filter_meta =
+ GST_DEBUG_FUNCPTR (gst_cuda_base_convert_filter_meta);
+ trans_class->transform = GST_DEBUG_FUNCPTR (gst_cuda_base_convert_transform);
+
+ btrans_class->set_info = GST_DEBUG_FUNCPTR (gst_cuda_base_convert_set_info);
+
+ gst_type_mark_as_plugin_api (GST_TYPE_CUDA_BASE_CONVERT, 0);
+}
+
+static void
+gst_cuda_base_convert_init (GstCudaBaseConvert * self)
+{
+}
+
+static void
+gst_cuda_base_convert_dispose (GObject * object)
+{
+ GstCudaBaseConvert *self = GST_CUDA_BASE_CONVERT (object);
+
+ if (self->converter) {
+ gst_cuda_converter_free (self->converter);
+ self->converter = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static GstCaps *
+gst_cuda_base_convert_caps_remove_format_info (GstCaps * caps)
+{
+ GstStructure *st;
+ GstCapsFeatures *f;
+ gint i, n;
+ GstCaps *res;
+ GstCapsFeatures *feature =
+ gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY);
+
+ 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, feature)) {
+ gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
+ NULL);
+ }
+
+ gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
+ }
+ gst_caps_features_free (feature);
+
+ return res;
+}
+
+static GstCaps *
+gst_cuda_base_convert_caps_rangify_size_info (GstCaps * caps)
+{
+ GstStructure *st;
+ GstCapsFeatures *f;
+ gint i, n;
+ GstCaps *res;
+ GstCapsFeatures *feature =
+ gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY);
+
+ 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, feature)) {
+ gst_structure_set (st, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+ "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
+
+ /* if pixel aspect ratio, make a range of it */
+ if (gst_structure_has_field (st, "pixel-aspect-ratio")) {
+ gst_structure_set (st, "pixel-aspect-ratio",
+ GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, NULL);
+ }
+ }
+
+ gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
+ }
+ gst_caps_features_free (feature);
+
+ return res;
+}
+
+static GstCaps *
+gst_cuda_base_convert_caps_remove_format_and_rangify_size_info (GstCaps * caps)
+{
+ GstStructure *st;
+ GstCapsFeatures *f;
+ gint i, n;
+ GstCaps *res;
+ GstCapsFeatures *feature =
+ gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY);
+
+ 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, feature)) {
+ gst_structure_set (st, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+ "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
+ /* if pixel aspect ratio, make a range of it */
+ if (gst_structure_has_field (st, "pixel-aspect-ratio")) {
+ gst_structure_set (st, "pixel-aspect-ratio",
+ GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, NULL);
+ }
+ gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
+ NULL);
+ }
+
+ gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
+ }
+ gst_caps_features_free (feature);
+
+ return res;
+}
+
+static GstCaps *
+gst_cuda_base_convert_transform_caps (GstBaseTransform *
+ trans, GstPadDirection direction, GstCaps * caps, GstCaps * filter)
+{
+ GstCaps *tmp, *tmp2;
+ GstCaps *result;
+
+ /* Get all possible caps that we can transform to */
+ tmp = gst_cuda_base_convert_caps_remove_format_and_rangify_size_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 (trans, "transformed %" GST_PTR_FORMAT " into %"
+ GST_PTR_FORMAT, caps, result);
+
+ return result;
+}
+
+/*
+ * This is an incomplete matrix of in formats and a score for the prefered 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 prefered, if we can we would convert to PAL instead
+ * of GRAY, though
+ * less subsampling is prefered 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;
+ guint 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 || t_info->format == GST_VIDEO_FORMAT_UNKNOWN)
+ 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 + (in_info->bits - t_info->bits);
+ }
+
+ 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_cuda_base_convert_fixate_format (GstBaseTransform * trans,
+ 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 (trans, "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 ("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 (trans, "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 (trans, in_info, val, &min_loss, &out_info);
+ if (min_loss == 0)
+ break;
+ }
+ }
+ } else if (G_VALUE_HOLDS_STRING (format)) {
+ score_value (trans, 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 gboolean
+subsampling_unchanged (GstVideoInfo * in_info, GstVideoInfo * out_info)
+{
+ guint i;
+ const GstVideoFormatInfo *in_format, *out_format;
+
+ if (GST_VIDEO_INFO_N_COMPONENTS (in_info) !=
+ GST_VIDEO_INFO_N_COMPONENTS (out_info))
+ return FALSE;
+
+ in_format = in_info->finfo;
+ out_format = out_info->finfo;
+
+ for (i = 0; i < GST_VIDEO_INFO_N_COMPONENTS (in_info); i++) {
+ if (GST_VIDEO_FORMAT_INFO_W_SUB (in_format,
+ i) != GST_VIDEO_FORMAT_INFO_W_SUB (out_format, i))
+ return FALSE;
+ if (GST_VIDEO_FORMAT_INFO_H_SUB (in_format,
+ i) != GST_VIDEO_FORMAT_INFO_H_SUB (out_format, i))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static void
+transfer_colorimetry_from_input (GstBaseTransform * trans, GstCaps * in_caps,
+ GstCaps * out_caps)
+{
+ GstStructure *out_caps_s = gst_caps_get_structure (out_caps, 0);
+ GstStructure *in_caps_s = gst_caps_get_structure (in_caps, 0);
+ gboolean have_colorimetry =
+ gst_structure_has_field (out_caps_s, "colorimetry");
+ gboolean have_chroma_site =
+ gst_structure_has_field (out_caps_s, "chroma-site");
+
+ /* If the output already has colorimetry and chroma-site, stop,
+ * otherwise try and transfer what we can from the input caps */
+ if (have_colorimetry && have_chroma_site)
+ return;
+
+ {
+ GstVideoInfo in_info, out_info;
+ const GValue *in_colorimetry =
+ gst_structure_get_value (in_caps_s, "colorimetry");
+
+ if (!gst_video_info_from_caps (&in_info, in_caps)) {
+ GST_WARNING_OBJECT (trans,
+ "Failed to convert sink pad caps to video info");
+ return;
+ }
+ if (!gst_video_info_from_caps (&out_info, out_caps)) {
+ GST_WARNING_OBJECT (trans,
+ "Failed to convert src pad caps to video info");
+ return;
+ }
+
+ if (!have_colorimetry && in_colorimetry != NULL) {
+ if ((GST_VIDEO_INFO_IS_YUV (&out_info)
+ && GST_VIDEO_INFO_IS_YUV (&in_info))
+ || (GST_VIDEO_INFO_IS_RGB (&out_info)
+ && GST_VIDEO_INFO_IS_RGB (&in_info))
+ || (GST_VIDEO_INFO_IS_GRAY (&out_info)
+ && GST_VIDEO_INFO_IS_GRAY (&in_info))) {
+ /* Can transfer the colorimetry intact from the input if it has it */
+ gst_structure_set_value (out_caps_s, "colorimetry", in_colorimetry);
+ } else {
+ gchar *colorimetry_str;
+
+ /* Changing between YUV/RGB - forward primaries and transfer function, but use
+ * default range and matrix.
+ * the primaries is used for conversion between RGB and XYZ (CIE 1931 coordinate).
+ * the transfer function could be another reference (e.g., HDR)
+ */
+ out_info.colorimetry.primaries = in_info.colorimetry.primaries;
+ out_info.colorimetry.transfer = in_info.colorimetry.transfer;
+
+ colorimetry_str =
+ gst_video_colorimetry_to_string (&out_info.colorimetry);
+ gst_caps_set_simple (out_caps, "colorimetry", G_TYPE_STRING,
+ colorimetry_str, NULL);
+ g_free (colorimetry_str);
+ }
+ }
+
+ /* Only YUV output needs chroma-site. If the input was also YUV and had the same chroma
+ * subsampling, transfer the siting. If the sub-sampling is changing, then the planes get
+ * scaled anyway so there's no real reason to prefer the input siting. */
+ if (!have_chroma_site && GST_VIDEO_INFO_IS_YUV (&out_info)) {
+ if (GST_VIDEO_INFO_IS_YUV (&in_info)) {
+ const GValue *in_chroma_site =
+ gst_structure_get_value (in_caps_s, "chroma-site");
+ if (in_chroma_site != NULL
+ && subsampling_unchanged (&in_info, &out_info))
+ gst_structure_set_value (out_caps_s, "chroma-site", in_chroma_site);
+ }
+ }
+ }
+}
+
+static GstCaps *
+gst_cuda_base_convert_get_fixed_format (GstBaseTransform * trans,
+ GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
+{
+ GstCaps *result;
+
+ result = gst_caps_intersect (othercaps, caps);
+ if (gst_caps_is_empty (result)) {
+ gst_caps_unref (result);
+ result = gst_caps_copy (othercaps);
+ }
+
+ gst_cuda_base_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);
+ } else {
+ /* Try and preserve input colorimetry / chroma information */
+ transfer_colorimetry_from_input (trans, caps, result);
+ }
+ }
+
+ return result;
+}
+
+static GstCaps *
+gst_cuda_base_convert_fixate_size (GstBaseTransform * base,
+ GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
+{
+ GstStructure *ins, *outs;
+ const GValue *from_par, *to_par;
+ GValue fpar = G_VALUE_INIT, tpar = G_VALUE_INIT;
+
+ othercaps = gst_caps_truncate (othercaps);
+ othercaps = gst_caps_make_writable (othercaps);
+ 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 (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 {
+ gint from_par_n, from_par_d;
+
+ if (!from_par) {
+ g_value_init (&fpar, GST_TYPE_FRACTION);
+ gst_value_set_fraction (&fpar, 1, 1);
+ from_par = &fpar;
+
+ from_par_n = from_par_d = 1;
+ } else {
+ from_par_n = gst_value_get_fraction_numerator (from_par);
+ from_par_d = gst_value_get_fraction_denominator (from_par);
+ }
+
+ if (!to_par) {
+ gint to_par_n, to_par_d;
+
+ to_par_n = from_par_n;
+ to_par_d = from_par_d;
+
+ g_value_init (&tpar, GST_TYPE_FRACTION);
+ gst_value_set_fraction (&tpar, to_par_n, to_par_d);
+ to_par = &tpar;
+
+ gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
+ to_par_n, to_par_d, NULL);
+ }
+ }
+
+ /* 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_round (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_round (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_round (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 scale sized - integer overflow"));
+ goto done;
+ }
+
+ h = (guint) gst_util_uint64_scale_int_round (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_round (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_round (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 dimensions with the DAR that was closest
+ * to the correct DAR. This changes the DAR but there's not much else to
+ * do here.
+ */
+ if (set_w * ABS (set_h - h) < ABS (f_w - w) * f_h) {
+ f_h = set_h;
+ f_w = set_w;
+ }
+ 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"));
+ 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);
+
+ 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_round (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_round (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 (from_par == &fpar)
+ g_value_unset (&fpar);
+ if (to_par == &tpar)
+ g_value_unset (&tpar);
+
+ return othercaps;
+}
+
+static GstCaps *
+gst_cuda_base_convert_fixate_caps (GstBaseTransform * trans,
+ GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
+{
+ GstCaps *format = NULL;
+
+ GST_DEBUG_OBJECT (trans,
+ "trying to fixate othercaps %" GST_PTR_FORMAT " based on caps %"
+ GST_PTR_FORMAT, othercaps, caps);
+
+ format = gst_cuda_base_convert_get_fixed_format (trans, direction, caps,
+ othercaps);
+
+ if (gst_caps_is_empty (format)) {
+ GST_ERROR_OBJECT (trans, "Could not convert formats");
+ return format;
+ }
+
+ /* convert mode is "all" or "size" here */
+ othercaps =
+ gst_cuda_base_convert_fixate_size (trans, direction, caps, othercaps);
+
+ if (gst_caps_get_size (othercaps) == 1) {
+ guint i;
+ const gchar *format_fields[] = { "format", "colorimetry", "chroma-site" };
+ GstStructure *format_struct = gst_caps_get_structure (format, 0);
+ GstStructure *fixated_struct;
+
+ othercaps = gst_caps_make_writable (othercaps);
+ fixated_struct = gst_caps_get_structure (othercaps, 0);
+
+ for (i = 0; i < G_N_ELEMENTS (format_fields); i++) {
+ if (gst_structure_has_field (format_struct, format_fields[i])) {
+ gst_structure_set (fixated_struct, format_fields[i], G_TYPE_STRING,
+ gst_structure_get_string (format_struct, format_fields[i]), NULL);
+ } else {
+ gst_structure_remove_field (fixated_struct, format_fields[i]);
+ }
+ }
+ }
+ gst_caps_unref (format);
+
+ GST_DEBUG_OBJECT (trans, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
+
+ return othercaps;
+}
+
+static gboolean
+gst_cuda_base_convert_propose_allocation (GstBaseTransform * trans,
+ GstQuery * decide_query, GstQuery * query)
+{
+ GstCudaBaseTransform *ctrans = GST_CUDA_BASE_TRANSFORM (trans);
+ GstVideoInfo info;
+ GstBufferPool *pool;
+ GstCaps *caps;
+ guint size;
+
+ if (!GST_BASE_TRANSFORM_CLASS (parent_class)->propose_allocation (trans,
+ decide_query, query))
+ return FALSE;
+
+ /* passthrough, we're done */
+ if (decide_query == NULL)
+ return TRUE;
+
+ gst_query_parse_allocation (query, &caps, NULL);
+
+ if (caps == NULL)
+ return FALSE;
+
+ if (!gst_video_info_from_caps (&info, caps))
+ return FALSE;
+
+ if (gst_query_get_n_allocation_pools (query) == 0) {
+ GstStructure *config;
+
+ pool = gst_cuda_buffer_pool_new (ctrans->context);
+
+ config = gst_buffer_pool_get_config (pool);
+
+ gst_buffer_pool_config_add_option (config,
+ GST_BUFFER_POOL_OPTION_VIDEO_META);
+
+ size = GST_VIDEO_INFO_SIZE (&info);
+ gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
+
+ if (!gst_buffer_pool_set_config (pool, config)) {
+ GST_ERROR_OBJECT (ctrans, "failed to set config");
+ gst_object_unref (pool);
+ return FALSE;
+ }
+
+ /* Get updated size by cuda buffer pool */
+ config = gst_buffer_pool_get_config (pool);
+ gst_buffer_pool_config_get_params (config, NULL, &size, NULL, NULL);
+ gst_structure_free (config);
+
+ gst_query_add_allocation_pool (query, pool, size, 0, 0);
+
+ gst_object_unref (pool);
+ }
+
+ gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
+
+ return TRUE;
+}
+
+static gboolean
+gst_cuda_base_convert_decide_allocation (GstBaseTransform * trans,
+ GstQuery * query)
+{
+ GstCudaBaseTransform *ctrans = GST_CUDA_BASE_TRANSFORM (trans);
+ GstCaps *outcaps = NULL;
+ GstBufferPool *pool = NULL;
+ guint size, min, max;
+ GstStructure *config;
+ gboolean update_pool = FALSE;
+
+ gst_query_parse_allocation (query, &outcaps, NULL);
+
+ if (!outcaps)
+ return FALSE;
+
+ if (gst_query_get_n_allocation_pools (query) > 0) {
+ gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
+ if (pool) {
+ if (!GST_IS_CUDA_BUFFER_POOL (pool)) {
+ gst_clear_object (&pool);
+ } else {
+ GstCudaBufferPool *cpool = GST_CUDA_BUFFER_POOL (pool);
+
+ if (cpool->context != ctrans->context) {
+ gst_clear_object (&pool);
+ }
+ }
+ }
+
+ update_pool = TRUE;
+ } else {
+ GstVideoInfo vinfo;
+ gst_video_info_from_caps (&vinfo, outcaps);
+ size = GST_VIDEO_INFO_SIZE (&vinfo);
+ min = max = 0;
+ }
+
+ if (!pool) {
+ GST_DEBUG_OBJECT (ctrans, "create our pool");
+
+ pool = gst_cuda_buffer_pool_new (ctrans->context);
+ }
+
+ config = gst_buffer_pool_get_config (pool);
+ gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
+ gst_buffer_pool_config_set_params (config, outcaps, size, min, max);
+ gst_buffer_pool_set_config (pool, config);
+
+ /* Get updated size by cuda buffer pool */
+ config = gst_buffer_pool_get_config (pool);
+ gst_buffer_pool_config_get_params (config, NULL, &size, NULL, NULL);
+ gst_structure_free (config);
+
+ if (update_pool)
+ gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
+ else
+ gst_query_add_allocation_pool (query, pool, size, min, max);
+
+ gst_object_unref (pool);
+
+ return GST_BASE_TRANSFORM_CLASS (parent_class)->decide_allocation (trans,
+ query);
+}
+
+static gboolean
+gst_cuda_base_convert_set_info (GstCudaBaseTransform * btrans,
+ GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
+ GstVideoInfo * out_info)
+{
+ GstCudaBaseConvert *self = GST_CUDA_BASE_CONVERT (btrans);
+ gint from_dar_n, from_dar_d, to_dar_n, to_dar_d;
+ GstVideoInfo tmp_info;
+
+ g_clear_pointer (&self->converter, gst_cuda_converter_free);
+
+ if (!gst_util_fraction_multiply (in_info->width,
+ in_info->height, in_info->par_n, in_info->par_d, &from_dar_n,
+ &from_dar_d)) {
+ from_dar_n = from_dar_d = -1;
+ }
+
+ if (!gst_util_fraction_multiply (out_info->width,
+ out_info->height, out_info->par_n, out_info->par_d, &to_dar_n,
+ &to_dar_d)) {
+ to_dar_n = to_dar_d = -1;
+ }
+
+ self->borders_w = self->borders_h = 0;
+ if (to_dar_n != from_dar_n || to_dar_d != from_dar_d) {
+ if (self->add_borders) {
+ gint n, d, to_h, to_w;
+
+ if (from_dar_n != -1 && from_dar_d != -1
+ && gst_util_fraction_multiply (from_dar_n, from_dar_d,
+ out_info->par_d, out_info->par_n, &n, &d)) {
+ to_h = gst_util_uint64_scale_int (out_info->width, d, n);
+ if (to_h <= out_info->height) {
+ self->borders_h = out_info->height - to_h;
+ self->borders_w = 0;
+ } else {
+ to_w = gst_util_uint64_scale_int (out_info->height, n, d);
+ g_assert (to_w <= out_info->width);
+ self->borders_h = 0;
+ self->borders_w = out_info->width - to_w;
+ }
+ } else {
+ GST_WARNING_OBJECT (self, "Can't calculate borders");
+ }
+ } else {
+ GST_WARNING_OBJECT (self, "Can't keep DAR!");
+ }
+ }
+
+ /* if present, these must match */
+ if (in_info->interlace_mode != out_info->interlace_mode) {
+ GST_ERROR_OBJECT (self, "input and output formats do not match");
+ return FALSE;
+ }
+
+ /* 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) &&
+ gst_video_transfer_function_is_equivalent (in_info->colorimetry.transfer,
+ in_info->finfo->bits, out_info->colorimetry.transfer,
+ out_info->finfo->bits)) {
+ gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (self), TRUE);
+ } else {
+ gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (self), FALSE);
+
+ self->converter = gst_cuda_converter_new (in_info,
+ out_info, btrans->context);
+ if (!self->converter) {
+ GST_ERROR_OBJECT (self, "Couldn't create converter");
+ return FALSE;
+ }
+ }
+
+ GST_DEBUG_OBJECT (self, "%s from=%dx%d (par=%d/%d dar=%d/%d), size %"
+ G_GSIZE_FORMAT " -> %s to=%dx%d (par=%d/%d dar=%d/%d borders=%d:%d), "
+ "size %" G_GSIZE_FORMAT,
+ gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (in_info)),
+ in_info->width, in_info->height, in_info->par_n, in_info->par_d,
+ from_dar_n, from_dar_d, in_info->size,
+ gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (out_info)),
+ out_info->width,
+ out_info->height, out_info->par_n, out_info->par_d, to_dar_n, to_dar_d,
+ self->borders_w, self->borders_h, out_info->size);
+
+ return TRUE;
+}
+
+static gboolean
+gst_cuda_base_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;
+}
+
+static GstFlowReturn
+gst_cuda_base_convert_transform (GstBaseTransform * trans,
+ GstBuffer * inbuf, GstBuffer * outbuf)
+{
+ GstCudaBaseConvert *self = GST_CUDA_BASE_CONVERT (trans);
+ GstCudaBaseTransform *btrans = GST_CUDA_BASE_TRANSFORM (trans);
+ GstVideoFrame in_frame, out_frame;
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstMemory *mem;
+
+ if (gst_buffer_n_memory (inbuf) != 1) {
+ GST_ERROR_OBJECT (self, "Invalid input buffer");
+ return GST_FLOW_ERROR;
+ }
+
+ mem = gst_buffer_peek_memory (inbuf, 0);
+ if (!gst_is_cuda_memory (mem)) {
+ GST_ERROR_OBJECT (self, "Input buffer is not CUDA");
+ return GST_FLOW_ERROR;
+ }
+
+ if (gst_buffer_n_memory (outbuf) != 1) {
+ GST_ERROR_OBJECT (self, "Invalid output buffer");
+ return GST_FLOW_ERROR;
+ }
+
+ mem = gst_buffer_peek_memory (outbuf, 0);
+ if (!gst_is_cuda_memory (mem)) {
+ GST_ERROR_OBJECT (self, "Input buffer is not CUDA");
+ return GST_FLOW_ERROR;
+ }
+
+ if (!gst_video_frame_map (&in_frame, &btrans->in_info, inbuf,
+ GST_MAP_READ | GST_MAP_CUDA)) {
+ GST_ERROR_OBJECT (self, "Failed to map input buffer");
+ return GST_FLOW_ERROR;
+ }
+
+ if (!gst_video_frame_map (&out_frame, &btrans->out_info, outbuf,
+ GST_MAP_WRITE | GST_MAP_CUDA)) {
+ gst_video_frame_unmap (&in_frame);
+ GST_ERROR_OBJECT (self, "Failed to map output buffer");
+ return GST_FLOW_ERROR;
+ }
+
+ if (!gst_cuda_converter_convert_frame (self->converter, &in_frame, &out_frame,
+ btrans->cuda_stream)) {
+ GST_ERROR_OBJECT (self, "Failed to convert frame");
+ ret = GST_FLOW_ERROR;
+ }
+
+ gst_video_frame_unmap (&out_frame);
+ gst_video_frame_unmap (&in_frame);
+
+ return ret;
+}
+
+/**
+ * SECTION:element-cudaconvertscale
+ * @title: cudaconvertscale
+ * @short_description: A CUDA based color conversion and video resizing element
+ *
+ * This element resizes video frames and change color space.
+ * By default the element will try to negotiate to the same size on the source
+ * and sinkpad so that no scaling is needed.
+ * It is therefore safe to insert this element in a pipeline to
+ * get more robust behaviour without any cost if no scaling is needed.
+ *
+ * ## Example launch line
+ * ```
+ * gst-launch-1.0 videotestsrc ! cudaupload ! cudaconvertscale ! cudadownload ! autovideosink
+ * ```
+ *
+ * Since: 1.22
+ */
+
+struct _GstCudaConvertScale
+{
+ GstCudaBaseConvert parent;
+};
+
+G_DEFINE_TYPE (GstCudaConvertScale, gst_cuda_convert_scale,
+ GST_TYPE_CUDA_BASE_CONVERT);
+
+static void
+gst_cuda_convert_scale_class_init (GstCudaConvertScaleClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_set_static_metadata (element_class,
+ "CUDA colorspace converter and scaler",
+ "Filter/Converter/Video/Scaler/Colorspace/Hardware",
+ "Resizes video and allow color conversion using CUDA",
+ "Seungha Yang <seungha@centricular.com>");
+}
+
+static void
+gst_cuda_convert_scale_init (GstCudaConvertScale * self)
+{
+}
projects / platform / upstream / gstreamer.git / commitdiff