/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Copyright (C) 2003 Ronald Bultje * Copyright (C) 2005-2012 David Schleef * Copyright (C) 2022 Thibault Saunier * * 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-videoconvertscale * @title: videoconvertscale * * This element resizes video frames and allows changing colorspace. 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. * * This element supports a wide range of color spaces including various YUV and * RGB formats and is therefore generally able to operate anywhere in a * pipeline. * * ## Example pipelines * |[ * gst-launch-1.0 -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoconvertscale ! autovideosink * ]| * Decode an Ogg/Theora and display the video. If the video sink chosen * cannot perform scaling, the video scaling will be performed by videoconvertscale * when you resize the video window. * To create the test Ogg/Theora file refer to the documentation of theoraenc. * |[ * gst-launch-1.0 -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoconvertscale ! video/x-raw,width=100 ! autovideosink * ]| * Decode an Ogg/Theora and display the video with a width of 100. * * Since: 1.22 */ /* * Formulas for PAR, DAR, width and height relations: * * dar_n w par_n * ----- = - * ----- * dar_d h par_d * * par_n h dar_n * ----- = - * ----- * par_d w dar_d * * dar_n par_d * w = h * ----- * ----- * dar_d par_n * * dar_d par_n * h = w * ----- * ----- * dar_n par_d */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include "gstvideoconvertscale.h" typedef struct { /* properties */ GstVideoScaleMethod method; gboolean add_borders; double sharpness; double sharpen; int submethod; double envelope; gint n_threads; GstVideoDitherMethod dither; guint dither_quantization; GstVideoResamplerMethod chroma_resampler; GstVideoAlphaMode alpha_mode; GstVideoChromaMode chroma_mode; GstVideoMatrixMode matrix_mode; GstVideoGammaMode gamma_mode; GstVideoPrimariesMode primaries_mode; gdouble alpha_value; GstVideoConverter *convert; gint borders_h; gint borders_w; gboolean scales; gboolean converts; } GstVideoConvertScalePrivate; #define gst_video_convert_scale_parent_class parent_class G_DEFINE_TYPE_WITH_PRIVATE (GstVideoConvertScale, gst_video_convert_scale, GST_TYPE_VIDEO_FILTER); GST_ELEMENT_REGISTER_DEFINE (videoconvertscale, "videoconvertscale", GST_RANK_SECONDARY, GST_TYPE_VIDEO_CONVERT_SCALE); #define PRIV(self) ((GstVideoConvertScalePrivate*)gst_video_convert_scale_get_instance_private(((GstVideoConvertScale*) self))) #define GST_CAT_DEFAULT video_convertscale_debug GST_DEBUG_CATEGORY_STATIC (video_convertscale_debug); GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE); #define DEFAULT_PROP_METHOD GST_VIDEO_SCALE_BILINEAR #define DEFAULT_PROP_ADD_BORDERS TRUE #define DEFAULT_PROP_SHARPNESS 1.0 #define DEFAULT_PROP_SHARPEN 0.0 #define DEFAULT_PROP_DITHER GST_VIDEO_DITHER_BAYER #define DEFAULT_PROP_ENVELOPE 2.0 #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 static GQuark _colorspace_quark; enum { PROP_0, PROP_METHOD, PROP_ADD_BORDERS, PROP_SHARPNESS, PROP_SHARPEN, PROP_DITHER, PROP_SUBMETHOD, PROP_ENVELOPE, PROP_N_THREADS, PROP_DITHER_QUANTIZATION, PROP_CHROMA_RESAMPLER, PROP_ALPHA_MODE, PROP_ALPHA_VALUE, PROP_CHROMA_MODE, PROP_MATRIX_MODE, PROP_GAMMA_MODE, PROP_PRIMARIES_MODE, }; #undef GST_VIDEO_SIZE_RANGE #define GST_VIDEO_SIZE_RANGE "(int) [ 1, 32767]" /* FIXME: add v210 support * FIXME: add v216 support * FIXME: add UYVP support * FIXME: add A420 support * FIXME: add YUV9 support * FIXME: add YVU9 support * FIXME: add IYU1 support * FIXME: add r210 support */ #define GST_VIDEO_FORMATS GST_VIDEO_FORMATS_ALL static GstStaticCaps gst_video_convert_scale_format_caps = GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS) ";" GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS)); static GQuark _size_quark; static GQuark _scale_quark; #define GST_TYPE_VIDEO_SCALE_METHOD (gst_video_scale_method_get_type()) static GType gst_video_scale_method_get_type (void) { static GType video_scale_method_type = 0; static const GEnumValue video_scale_methods[] = { {GST_VIDEO_SCALE_NEAREST, "Nearest Neighbour", "nearest-neighbour"}, {GST_VIDEO_SCALE_BILINEAR, "Bilinear (2-tap)", "bilinear"}, {GST_VIDEO_SCALE_4TAP, "4-tap Sinc", "4-tap"}, {GST_VIDEO_SCALE_LANCZOS, "Lanczos", "lanczos"}, {GST_VIDEO_SCALE_BILINEAR2, "Bilinear (multi-tap)", "bilinear2"}, {GST_VIDEO_SCALE_SINC, "Sinc (multi-tap)", "sinc"}, {GST_VIDEO_SCALE_HERMITE, "Hermite (multi-tap)", "hermite"}, {GST_VIDEO_SCALE_SPLINE, "Spline (multi-tap)", "spline"}, {GST_VIDEO_SCALE_CATROM, "Catmull-Rom (multi-tap)", "catrom"}, {GST_VIDEO_SCALE_MITCHELL, "Mitchell (multi-tap)", "mitchell"}, {0, NULL, NULL}, }; if (!video_scale_method_type) { video_scale_method_type = g_enum_register_static ("GstVideoScaleMethod", video_scale_methods); } return video_scale_method_type; } static GstCaps * gst_video_convert_scale_get_capslist (void) { static GstCaps *caps = NULL; static gsize inited = 0; if (g_once_init_enter (&inited)) { caps = gst_static_caps_get (&gst_video_convert_scale_format_caps); g_once_init_leave (&inited, 1); } return caps; } static GstPadTemplate * gst_video_convert_scale_src_template_factory (void) { return gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, gst_video_convert_scale_get_capslist ()); } static GstPadTemplate * gst_video_convert_scale_sink_template_factory (void) { return gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, gst_video_convert_scale_get_capslist ()); } static void gst_video_convert_scale_finalize (GstVideoConvertScale * self); static gboolean gst_video_convert_scale_src_event (GstBaseTransform * trans, GstEvent * event); /* base transform vmethods */ static GstCaps *gst_video_convert_scale_transform_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps, GstCaps * filter); static GstCaps *gst_video_convert_scale_fixate_caps (GstBaseTransform * base, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps); static gboolean gst_video_convert_scale_transform_meta (GstBaseTransform * trans, GstBuffer * outbuf, GstMeta * meta, GstBuffer * inbuf); static gboolean gst_video_convert_scale_set_info (GstVideoFilter * filter, GstCaps * in, GstVideoInfo * in_info, GstCaps * out, GstVideoInfo * out_info); static GstFlowReturn gst_video_convert_scale_transform_frame (GstVideoFilter * filter, GstVideoFrame * in, GstVideoFrame * out); static void gst_video_convert_scale_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_video_convert_scale_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstCapsFeatures *features_format_interlaced, *features_format_interlaced_sysmem; static gboolean gst_video_convert_scale_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 void gst_video_convert_scale_class_init (GstVideoConvertScaleClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstElementClass *element_class = (GstElementClass *) klass; GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass; GstVideoFilterClass *filter_class = (GstVideoFilterClass *) klass; GST_DEBUG_CATEGORY_INIT (video_convertscale_debug, "videoconvertscale", 0, "videoconvertscale element"); GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE"); features_format_interlaced = gst_caps_features_new (GST_CAPS_FEATURE_FORMAT_INTERLACED, NULL); features_format_interlaced_sysmem = gst_caps_features_copy (features_format_interlaced); gst_caps_features_add (features_format_interlaced_sysmem, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY); _colorspace_quark = g_quark_from_static_string ("colorspace"); gobject_class->finalize = (GObjectFinalizeFunc) gst_video_convert_scale_finalize; gobject_class->set_property = gst_video_convert_scale_set_property; gobject_class->get_property = gst_video_convert_scale_get_property; g_object_class_install_property (gobject_class, PROP_METHOD, g_param_spec_enum ("method", "method", "method", GST_TYPE_VIDEO_SCALE_METHOD, DEFAULT_PROP_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_ADD_BORDERS, g_param_spec_boolean ("add-borders", "Add Borders", "Add black borders if necessary to keep the display aspect ratio", DEFAULT_PROP_ADD_BORDERS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SHARPNESS, g_param_spec_double ("sharpness", "Sharpness", "Sharpness of filter", 0.5, 1.5, DEFAULT_PROP_SHARPNESS, G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SHARPEN, g_param_spec_double ("sharpen", "Sharpen", "Sharpening", 0.0, 1.0, DEFAULT_PROP_SHARPEN, G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); 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_ENVELOPE, g_param_spec_double ("envelope", "Envelope", "Size of filter envelope", 1.0, 5.0, DEFAULT_PROP_ENVELOPE, G_PARAM_CONSTRUCT | 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_CONSTRUCT | 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)); gst_element_class_set_static_metadata (element_class, "Video colorspace converter and scaler", "Filter/Converter/Video/Scaler/Colorspace", "Resizes video and allow color conversion", "Wim Taymans "); gst_element_class_add_pad_template (element_class, gst_video_convert_scale_sink_template_factory ()); gst_element_class_add_pad_template (element_class, gst_video_convert_scale_src_template_factory ()); _size_quark = g_quark_from_static_string (GST_META_TAG_VIDEO_SIZE_STR); _scale_quark = gst_video_meta_transform_scale_get_quark (); gst_type_mark_as_plugin_api (GST_TYPE_VIDEO_SCALE_METHOD, 0); trans_class->transform_caps = GST_DEBUG_FUNCPTR (gst_video_convert_scale_transform_caps); trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_video_convert_scale_fixate_caps); trans_class->filter_meta = GST_DEBUG_FUNCPTR (gst_video_convert_scale_filter_meta); trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_convert_scale_src_event); trans_class->transform_meta = GST_DEBUG_FUNCPTR (gst_video_convert_scale_transform_meta); filter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_convert_scale_set_info); filter_class->transform_frame = GST_DEBUG_FUNCPTR (gst_video_convert_scale_transform_frame); } static void gst_video_convert_scale_init (GstVideoConvertScale * self) { GstVideoConvertScalePrivate *priv = PRIV (self); priv->method = DEFAULT_PROP_METHOD; priv->add_borders = DEFAULT_PROP_ADD_BORDERS; priv->sharpness = DEFAULT_PROP_SHARPNESS; priv->sharpen = DEFAULT_PROP_SHARPEN; priv->envelope = DEFAULT_PROP_ENVELOPE; priv->n_threads = DEFAULT_PROP_N_THREADS; priv->dither = DEFAULT_PROP_DITHER; priv->dither_quantization = DEFAULT_PROP_DITHER_QUANTIZATION; priv->chroma_resampler = DEFAULT_PROP_CHROMA_RESAMPLER; priv->alpha_mode = DEFAULT_PROP_ALPHA_MODE; priv->alpha_value = DEFAULT_PROP_ALPHA_VALUE; priv->chroma_mode = DEFAULT_PROP_CHROMA_MODE; priv->matrix_mode = DEFAULT_PROP_MATRIX_MODE; priv->gamma_mode = DEFAULT_PROP_GAMMA_MODE; priv->primaries_mode = DEFAULT_PROP_PRIMARIES_MODE; priv->scales = TRUE; priv->converts = TRUE; } static void gst_video_convert_scale_finalize (GstVideoConvertScale * self) { GstVideoConvertScalePrivate *priv = PRIV (self); if (priv->convert) gst_video_converter_free (priv->convert); G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (self)); } static void gst_video_convert_scale_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstVideoConvertScalePrivate *priv = PRIV (object); GST_OBJECT_LOCK (object); switch (prop_id) { case PROP_METHOD: priv->method = g_value_get_enum (value); break; case PROP_ADD_BORDERS: priv->add_borders = g_value_get_boolean (value); GST_OBJECT_UNLOCK (object); gst_base_transform_reconfigure_src (GST_BASE_TRANSFORM_CAST (object)); return; case PROP_SHARPNESS: priv->sharpness = g_value_get_double (value); break; case PROP_SHARPEN: priv->sharpen = g_value_get_double (value); break; case PROP_SUBMETHOD: priv->submethod = g_value_get_int (value); break; case PROP_ENVELOPE: priv->envelope = g_value_get_double (value); break; case PROP_N_THREADS: priv->n_threads = g_value_get_uint (value); break; case PROP_DITHER: priv->dither = g_value_get_enum (value); break; case PROP_CHROMA_RESAMPLER: priv->chroma_resampler = g_value_get_enum (value); break; case PROP_ALPHA_MODE: priv->alpha_mode = g_value_get_enum (value); break; case PROP_ALPHA_VALUE: priv->alpha_value = g_value_get_double (value); break; case PROP_CHROMA_MODE: priv->chroma_mode = g_value_get_enum (value); break; case PROP_MATRIX_MODE: priv->matrix_mode = g_value_get_enum (value); break; case PROP_GAMMA_MODE: priv->gamma_mode = g_value_get_enum (value); break; case PROP_PRIMARIES_MODE: priv->primaries_mode = g_value_get_enum (value); break; case PROP_DITHER_QUANTIZATION: priv->dither_quantization = g_value_get_uint (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } GST_OBJECT_UNLOCK (object); } static void gst_video_convert_scale_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstVideoConvertScalePrivate *priv = PRIV (object); GST_OBJECT_LOCK (object); switch (prop_id) { case PROP_METHOD: g_value_set_enum (value, priv->method); break; case PROP_ADD_BORDERS: g_value_set_boolean (value, priv->add_borders); break; case PROP_SHARPNESS: g_value_set_double (value, priv->sharpness); break; case PROP_SHARPEN: g_value_set_double (value, priv->sharpen); break; case PROP_SUBMETHOD: g_value_set_int (value, priv->submethod); break; case PROP_ENVELOPE: g_value_set_double (value, priv->envelope); break; case PROP_N_THREADS: g_value_set_uint (value, priv->n_threads); break; case PROP_DITHER: g_value_set_enum (value, priv->dither); break; case PROP_CHROMA_RESAMPLER: g_value_set_enum (value, priv->chroma_resampler); break; case PROP_ALPHA_MODE: g_value_set_enum (value, priv->alpha_mode); break; case PROP_ALPHA_VALUE: g_value_set_double (value, priv->alpha_value); break; case PROP_CHROMA_MODE: g_value_set_enum (value, priv->chroma_mode); break; case PROP_MATRIX_MODE: g_value_set_enum (value, priv->matrix_mode); break; case PROP_GAMMA_MODE: g_value_set_enum (value, priv->gamma_mode); break; case PROP_PRIMARIES_MODE: g_value_set_enum (value, priv->primaries_mode); break; case PROP_DITHER_QUANTIZATION: g_value_set_uint (value, priv->dither_quantization); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } GST_OBJECT_UNLOCK (object); } static GstCaps * gst_video_convert_caps_remove_format_and_rangify_size_info (GstVideoConvertScale * self, GstCaps * caps) { GstCaps *ret; GstStructure *structure; GstCapsFeatures *features; gint i, n; GstVideoConvertScalePrivate *priv = PRIV (self); ret = gst_caps_new_empty (); n = gst_caps_get_size (caps); for (i = 0; i < n; i++) { structure = gst_caps_get_structure (caps, i); features = 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 (ret, structure, features)) continue; structure = gst_structure_copy (structure); /* Only remove format info for the cases when we can actually convert */ if (!gst_caps_features_is_any (features) && (gst_caps_features_is_equal (features, GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY) || gst_caps_features_is_equal (features, features_format_interlaced) || gst_caps_features_is_equal (features, features_format_interlaced_sysmem))) { if (priv->scales) { gst_structure_set (structure, "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 (structure, "pixel-aspect-ratio")) { gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, NULL); } } if (priv->converts) { gst_structure_remove_fields (structure, "format", "colorimetry", "chroma-site", NULL); } } gst_caps_append_structure_full (ret, structure, gst_caps_features_copy (features)); } return ret; } static GstCaps * gst_video_convert_scale_transform_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps, GstCaps * filter) { gint i; GstCaps *ret; GstVideoConvertScale *self = GST_VIDEO_CONVERT_SCALE (trans); GST_DEBUG_OBJECT (trans, "Transforming caps %" GST_PTR_FORMAT " in direction %s", caps, (direction == GST_PAD_SINK) ? "sink" : "src"); ret = gst_video_convert_caps_remove_format_and_rangify_size_info (self, caps); if (filter) { GstCaps *intersection; intersection = gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST); gst_caps_unref (ret); ret = intersection; } if (GST_VIDEO_CONVERT_SCALE_GET_CLASS (trans)->any_memory) return ret; for (i = 0; i < gst_caps_get_size (ret); i++) { gint j; GstCapsFeatures *f = gst_caps_get_features (ret, i); if (!f || gst_caps_features_is_any (f) || gst_caps_features_is_equal (f, GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)) continue; for (j = 0; j < gst_caps_features_get_size (f); j++) { const gchar *feature = gst_caps_features_get_nth (f, j); if (g_str_has_prefix (feature, "memory:")) { GST_DEBUG_OBJECT (trans, "Can not work with memory `%s`", feature); gst_caps_remove_structure (ret, i); break; } } } GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret); return ret; } static gboolean gst_video_convert_scale_transform_meta (GstBaseTransform * trans, GstBuffer * outbuf, GstMeta * meta, GstBuffer * inbuf) { GstVideoFilter *videofilter = GST_VIDEO_FILTER (trans); const GstMetaInfo *info = meta->info; const gchar *const *tags; const gchar *const *curr = NULL; gboolean should_copy = TRUE; const gchar *const valid_tags[] = { GST_META_TAG_VIDEO_STR, GST_META_TAG_VIDEO_ORIENTATION_STR, GST_META_TAG_VIDEO_SIZE_STR, }; tags = gst_meta_api_type_get_tags (info->api); /* No specific tags, we are good to copy */ if (!tags) { return TRUE; } 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. */ return FALSE; } /* We are only changing size, we can preserve other metas tagged as orientation and colorspace */ for (curr = tags; *curr; ++curr) { /* We dont handle any other tag */ if (!g_strv_contains (valid_tags, *curr)) { should_copy = FALSE; break; } } /* Cant handle the tags in this meta, let the parent class handle it */ if (!should_copy) { return GST_BASE_TRANSFORM_CLASS (parent_class)->transform_meta (trans, outbuf, meta, inbuf); } /* This meta is size sensitive, try to transform it accordingly */ if (gst_meta_api_type_has_tag (info->api, _size_quark)) { GstVideoMetaTransform trans = { &videofilter->in_info, &videofilter->out_info }; if (info->transform_func) info->transform_func (outbuf, meta, inbuf, _scale_quark, &trans); return FALSE; } /* No need to transform, we can safely copy this meta */ return TRUE; } static gboolean gst_video_convert_scale_set_info (GstVideoFilter * filter, GstCaps * in, GstVideoInfo * in_info, GstCaps * out, GstVideoInfo * out_info) { GstVideoConvertScale *self = GST_VIDEO_CONVERT_SCALE (filter); GstVideoConvertScalePrivate *priv = PRIV (self); gint from_dar_n, from_dar_d, to_dar_n, to_dar_d; GstVideoInfo tmp_info; if (priv->convert) { gst_video_converter_free (priv->convert); priv->convert = NULL; } 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; } priv->borders_w = priv->borders_h = 0; if (to_dar_n != from_dar_n || to_dar_d != from_dar_d) { if (priv->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) { priv->borders_h = out_info->height - to_h; priv->borders_w = 0; } else { to_w = gst_util_uint64_scale_int (out_info->height, n, d); g_assert (to_w <= out_info->width); priv->borders_h = 0; priv->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) 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_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 (filter), TRUE); } } else { GstStructure *options; GST_CAT_DEBUG_OBJECT (CAT_PERFORMANCE, filter, "setup videoscaling"); gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), FALSE); options = gst_structure_new_empty ("videoconvertscale"); switch (priv->method) { case GST_VIDEO_SCALE_NEAREST: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_NEAREST, NULL); break; case GST_VIDEO_SCALE_BILINEAR: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_LINEAR, GST_VIDEO_RESAMPLER_OPT_MAX_TAPS, G_TYPE_INT, 2, NULL); break; case GST_VIDEO_SCALE_4TAP: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_SINC, GST_VIDEO_RESAMPLER_OPT_MAX_TAPS, G_TYPE_INT, 4, NULL); break; case GST_VIDEO_SCALE_LANCZOS: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_LANCZOS, NULL); break; case GST_VIDEO_SCALE_BILINEAR2: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_LINEAR, NULL); break; case GST_VIDEO_SCALE_SINC: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_SINC, NULL); break; case GST_VIDEO_SCALE_HERMITE: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC, GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 0.0, GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 0.0, NULL); break; case GST_VIDEO_SCALE_SPLINE: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC, GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 1.0, GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 0.0, NULL); break; case GST_VIDEO_SCALE_CATROM: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC, GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 0.0, GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 0.5, NULL); break; case GST_VIDEO_SCALE_MITCHELL: gst_structure_set (options, GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC, GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 1.0 / 3.0, GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 1.0 / 3.0, NULL); break; } gst_structure_set (options, GST_VIDEO_RESAMPLER_OPT_ENVELOPE, G_TYPE_DOUBLE, priv->envelope, GST_VIDEO_RESAMPLER_OPT_SHARPNESS, G_TYPE_DOUBLE, priv->sharpness, GST_VIDEO_RESAMPLER_OPT_SHARPEN, G_TYPE_DOUBLE, priv->sharpen, GST_VIDEO_CONVERTER_OPT_DEST_X, G_TYPE_INT, priv->borders_w / 2, GST_VIDEO_CONVERTER_OPT_DEST_Y, G_TYPE_INT, priv->borders_h / 2, GST_VIDEO_CONVERTER_OPT_DEST_WIDTH, G_TYPE_INT, out_info->width - priv->borders_w, GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT, out_info->height - priv->borders_h, GST_VIDEO_CONVERTER_OPT_DITHER_METHOD, GST_TYPE_VIDEO_DITHER_METHOD, priv->dither, GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION, G_TYPE_UINT, priv->dither_quantization, GST_VIDEO_CONVERTER_OPT_CHROMA_RESAMPLER_METHOD, GST_TYPE_VIDEO_RESAMPLER_METHOD, priv->chroma_resampler, GST_VIDEO_CONVERTER_OPT_ALPHA_MODE, GST_TYPE_VIDEO_ALPHA_MODE, priv->alpha_mode, GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE, G_TYPE_DOUBLE, priv->alpha_value, GST_VIDEO_CONVERTER_OPT_CHROMA_MODE, GST_TYPE_VIDEO_CHROMA_MODE, priv->chroma_mode, GST_VIDEO_CONVERTER_OPT_MATRIX_MODE, GST_TYPE_VIDEO_MATRIX_MODE, priv->matrix_mode, GST_VIDEO_CONVERTER_OPT_GAMMA_MODE, GST_TYPE_VIDEO_GAMMA_MODE, priv->gamma_mode, GST_VIDEO_CONVERTER_OPT_PRIMARIES_MODE, GST_TYPE_VIDEO_PRIMARIES_MODE, priv->primaries_mode, GST_VIDEO_CONVERTER_OPT_THREADS, G_TYPE_UINT, priv->n_threads, NULL); priv->convert = gst_video_converter_new (in_info, out_info, options); if (priv->convert == NULL) goto no_convert; } GST_DEBUG_OBJECT (filter, "converting format %s -> %s", gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (in_info)), gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (out_info))); GST_DEBUG_OBJECT (self, "from=%dx%d (par=%d/%d dar=%d/%d), size %" G_GSIZE_FORMAT " -> to=%dx%d (par=%d/%d dar=%d/%d borders=%d:%d), " "size %" G_GSIZE_FORMAT, in_info->width, in_info->height, in_info->par_n, in_info->par_d, from_dar_n, from_dar_d, in_info->size, out_info->width, out_info->height, out_info->par_n, out_info->par_d, to_dar_n, to_dar_d, priv->borders_w, priv->borders_h, out_info->size); return TRUE; /* ERRORS */ format_mismatch: { GST_ERROR_OBJECT (self, "input and output formats do not match"); return FALSE; } no_convert: { GST_ERROR_OBJECT (self, "could not create converter"); return FALSE; } } /* * 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 || 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; } 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_scale_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"); gst_structure_remove_fields (tests, "height", "width", "pixel-aspect-ratio", "display-aspect-ratio", NULL); /* 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 gboolean subsampling_unchanged (GstVideoInfo * in_info, GstVideoInfo * out_info) { gint 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_video_convert_scale_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_video_convert_scale_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_video_convert_scale_fixate_size (GstBaseTransform * base, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps) { GstStructure *ins, *outs; const GValue *from_par, *to_par; GValue fpar = { 0, }; GValue tpar = { 0, }; 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 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_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 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); 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: othercaps = gst_caps_fixate (othercaps); 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 GstCaps * gst_video_convert_scale_fixate_caps (GstBaseTransform * base, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps) { GstCaps *format; GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT " based on caps %" GST_PTR_FORMAT, othercaps, caps); format = gst_video_convert_scale_get_fixed_format (base, direction, caps, othercaps); if (gst_caps_is_empty (format)) { GST_ERROR_OBJECT (base, "Could not convert formats"); return format; } othercaps = gst_video_convert_scale_fixate_size (base, direction, caps, othercaps); if (gst_caps_get_size (othercaps) == 1) { gint 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 (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps); return othercaps; } #define GET_LINE(frame, line) \ (gpointer)(((guint8*)(GST_VIDEO_FRAME_PLANE_DATA (frame, 0))) + \ GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0) * (line)) static GstFlowReturn gst_video_convert_scale_transform_frame (GstVideoFilter * filter, GstVideoFrame * in_frame, GstVideoFrame * out_frame) { GstVideoConvertScalePrivate *priv = PRIV (filter); GstFlowReturn ret = GST_FLOW_OK; GST_CAT_DEBUG_OBJECT (CAT_PERFORMANCE, filter, "doing video scaling"); gst_video_converter_frame (priv->convert, in_frame, out_frame); return ret; } static gboolean gst_video_convert_scale_src_event (GstBaseTransform * trans, GstEvent * event) { GstVideoConvertScale *self = GST_VIDEO_CONVERT_SCALE_CAST (trans); GstVideoFilter *filter = GST_VIDEO_FILTER_CAST (trans); gboolean ret; gdouble x, y; GST_DEBUG_OBJECT (self, "handling %s event", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_NAVIGATION: if (filter->in_info.width != filter->out_info.width || filter->in_info.height != filter->out_info.height) { event = gst_event_make_writable (event); if (gst_navigation_event_get_coordinates (event, &x, &y)) { gst_navigation_event_set_coordinates (event, x * filter->in_info.width / filter->out_info.width, y * filter->in_info.height / filter->out_info.height); } } break; default: break; } ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event); return ret; } void gst_video_convert_scale_set_scales (GstVideoConvertScale * self, gboolean scales) { GstVideoConvertScalePrivate *priv = PRIV (self); if (!scales) g_assert (priv->converts); priv->scales = scales; } void gst_video_convert_scale_set_converts (GstVideoConvertScale * self, gboolean converts) { GstVideoConvertScalePrivate *priv = PRIV (self); if (!converts) g_assert (priv->scales); priv->converts = converts; } gboolean gst_video_convert_scale_get_scales (GstVideoConvertScale * self) { return PRIV (self)->scales; } gboolean gst_video_convert_scale_get_converts (GstVideoConvertScale * self) { return PRIV (self)->converts; }