| /* GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
| * Copyright (C) 2005-2012 David Schleef <ds@schleef.org> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:element-videoscale |
| * @title: videoscale |
| * @see_also: videorate, videoconvert |
| * |
| * This element resizes video frames. 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 ! videoconvert ! videoscale ! autovideosink |
| * ]| |
| * Decode an Ogg/Theora and display the video. If the video sink chosen |
| * cannot perform scaling, the video scaling will be performed by videoscale |
| * 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 ! videoconvert ! videoscale ! video/x-raw,width=100 ! autovideosink |
| * ]| |
| * Decode an Ogg/Theora and display the video with a width of 100. |
| * |
| */ |
| |
| /* |
| * 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 <string.h> |
| |
| #include <math.h> |
| |
| #include <gst/video/gstvideometa.h> |
| #include <gst/video/gstvideopool.h> |
| |
| #include "gstvideoscale.h" |
| |
| #define GST_CAT_DEFAULT video_scale_debug |
| GST_DEBUG_CATEGORY_STATIC (video_scale_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 FALSE |
| #define DEFAULT_PROP_SUBMETHOD 1 |
| #define DEFAULT_PROP_ENVELOPE 2.0 |
| #define DEFAULT_PROP_GAMMA_DECODE FALSE |
| #define DEFAULT_PROP_N_THREADS 1 |
| |
| enum |
| { |
| PROP_0, |
| PROP_METHOD, |
| PROP_ADD_BORDERS, |
| PROP_SHARPNESS, |
| PROP_SHARPEN, |
| PROP_DITHER, |
| PROP_SUBMETHOD, |
| PROP_ENVELOPE, |
| PROP_GAMMA_DECODE, |
| PROP_N_THREADS |
| }; |
| |
| #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_scale_format_caps = |
| GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS) ";" |
| GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS)); |
| |
| #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_scale_get_capslist (void) |
| { |
| static GstCaps *caps = NULL; |
| static volatile gsize inited = 0; |
| |
| if (g_once_init_enter (&inited)) { |
| caps = gst_static_caps_get (&gst_video_scale_format_caps); |
| g_once_init_leave (&inited, 1); |
| } |
| return caps; |
| } |
| |
| static GstPadTemplate * |
| gst_video_scale_src_template_factory (void) |
| { |
| return gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, |
| gst_video_scale_get_capslist ()); |
| } |
| |
| static GstPadTemplate * |
| gst_video_scale_sink_template_factory (void) |
| { |
| return gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, |
| gst_video_scale_get_capslist ()); |
| } |
| |
| |
| static void gst_video_scale_finalize (GstVideoScale * videoscale); |
| static gboolean gst_video_scale_src_event (GstBaseTransform * trans, |
| GstEvent * event); |
| |
| /* base transform vmethods */ |
| static GstCaps *gst_video_scale_transform_caps (GstBaseTransform * trans, |
| GstPadDirection direction, GstCaps * caps, GstCaps * filter); |
| static GstCaps *gst_video_scale_fixate_caps (GstBaseTransform * base, |
| GstPadDirection direction, GstCaps * caps, GstCaps * othercaps); |
| |
| static gboolean gst_video_scale_set_info (GstVideoFilter * filter, |
| GstCaps * in, GstVideoInfo * in_info, GstCaps * out, |
| GstVideoInfo * out_info); |
| static GstFlowReturn gst_video_scale_transform_frame (GstVideoFilter * filter, |
| GstVideoFrame * in, GstVideoFrame * out); |
| |
| static void gst_video_scale_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_video_scale_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| |
| #define gst_video_scale_parent_class parent_class |
| G_DEFINE_TYPE (GstVideoScale, gst_video_scale, GST_TYPE_VIDEO_FILTER); |
| |
| static void |
| gst_video_scale_class_init (GstVideoScaleClass * klass) |
| { |
| GObjectClass *gobject_class = (GObjectClass *) klass; |
| GstElementClass *element_class = (GstElementClass *) klass; |
| GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass; |
| GstVideoFilterClass *filter_class = (GstVideoFilterClass *) klass; |
| |
| gobject_class->finalize = (GObjectFinalizeFunc) gst_video_scale_finalize; |
| gobject_class->set_property = gst_video_scale_set_property; |
| gobject_class->get_property = gst_video_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_boolean ("dither", "Dither", |
| "Add dither (only used for Lanczos method)", |
| DEFAULT_PROP_DITHER, |
| G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| #if 0 |
| /* I am hiding submethod for now, since it's poorly named, poorly |
| * documented, and will probably just get people into trouble. */ |
| g_object_class_install_property (gobject_class, PROP_SUBMETHOD, |
| g_param_spec_int ("submethod", "submethod", |
| "submethod", 0, 3, DEFAULT_PROP_SUBMETHOD, |
| G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| #endif |
| |
| 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_GAMMA_DECODE, |
| g_param_spec_boolean ("gamma-decode", "Gamma Decode", |
| "Decode gamma before scaling", DEFAULT_PROP_GAMMA_DECODE, |
| 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)); |
| |
| gst_element_class_set_static_metadata (element_class, |
| "Video scaler", "Filter/Converter/Video/Scaler", |
| "Resizes video", "Wim Taymans <wim.taymans@gmail.com>"); |
| |
| gst_element_class_add_pad_template (element_class, |
| gst_video_scale_sink_template_factory ()); |
| gst_element_class_add_pad_template (element_class, |
| gst_video_scale_src_template_factory ()); |
| |
| trans_class->transform_caps = |
| GST_DEBUG_FUNCPTR (gst_video_scale_transform_caps); |
| trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_video_scale_fixate_caps); |
| trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_scale_src_event); |
| |
| filter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_scale_set_info); |
| filter_class->transform_frame = |
| GST_DEBUG_FUNCPTR (gst_video_scale_transform_frame); |
| } |
| |
| static void |
| gst_video_scale_init (GstVideoScale * videoscale) |
| { |
| videoscale->method = DEFAULT_PROP_METHOD; |
| videoscale->add_borders = DEFAULT_PROP_ADD_BORDERS; |
| videoscale->submethod = DEFAULT_PROP_SUBMETHOD; |
| videoscale->sharpness = DEFAULT_PROP_SHARPNESS; |
| videoscale->sharpen = DEFAULT_PROP_SHARPEN; |
| videoscale->dither = DEFAULT_PROP_DITHER; |
| videoscale->envelope = DEFAULT_PROP_ENVELOPE; |
| videoscale->gamma_decode = DEFAULT_PROP_GAMMA_DECODE; |
| videoscale->n_threads = DEFAULT_PROP_N_THREADS; |
| } |
| |
| static void |
| gst_video_scale_finalize (GstVideoScale * videoscale) |
| { |
| if (videoscale->convert) |
| gst_video_converter_free (videoscale->convert); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (videoscale)); |
| } |
| |
| static void |
| gst_video_scale_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstVideoScale *vscale = GST_VIDEO_SCALE (object); |
| |
| switch (prop_id) { |
| case PROP_METHOD: |
| GST_OBJECT_LOCK (vscale); |
| vscale->method = g_value_get_enum (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_ADD_BORDERS: |
| GST_OBJECT_LOCK (vscale); |
| vscale->add_borders = g_value_get_boolean (value); |
| GST_OBJECT_UNLOCK (vscale); |
| gst_base_transform_reconfigure_src (GST_BASE_TRANSFORM_CAST (vscale)); |
| break; |
| case PROP_SHARPNESS: |
| GST_OBJECT_LOCK (vscale); |
| vscale->sharpness = g_value_get_double (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_SHARPEN: |
| GST_OBJECT_LOCK (vscale); |
| vscale->sharpen = g_value_get_double (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_DITHER: |
| GST_OBJECT_LOCK (vscale); |
| vscale->dither = g_value_get_boolean (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_SUBMETHOD: |
| GST_OBJECT_LOCK (vscale); |
| vscale->submethod = g_value_get_int (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_ENVELOPE: |
| GST_OBJECT_LOCK (vscale); |
| vscale->envelope = g_value_get_double (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_GAMMA_DECODE: |
| GST_OBJECT_LOCK (vscale); |
| vscale->gamma_decode = g_value_get_boolean (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_N_THREADS: |
| GST_OBJECT_LOCK (vscale); |
| vscale->n_threads = g_value_get_uint (value); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_video_scale_get_property (GObject * object, guint prop_id, GValue * value, |
| GParamSpec * pspec) |
| { |
| GstVideoScale *vscale = GST_VIDEO_SCALE (object); |
| |
| switch (prop_id) { |
| case PROP_METHOD: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_enum (value, vscale->method); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_ADD_BORDERS: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_boolean (value, vscale->add_borders); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_SHARPNESS: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_double (value, vscale->sharpness); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_SHARPEN: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_double (value, vscale->sharpen); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_DITHER: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_boolean (value, vscale->dither); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_SUBMETHOD: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_int (value, vscale->submethod); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_ENVELOPE: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_double (value, vscale->envelope); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_GAMMA_DECODE: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_boolean (value, vscale->gamma_decode); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| case PROP_N_THREADS: |
| GST_OBJECT_LOCK (vscale); |
| g_value_set_uint (value, vscale->n_threads); |
| GST_OBJECT_UNLOCK (vscale); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static GstCaps * |
| gst_video_scale_transform_caps (GstBaseTransform * trans, |
| GstPadDirection direction, GstCaps * caps, GstCaps * filter) |
| { |
| GstCaps *ret; |
| GstStructure *structure; |
| GstCapsFeatures *features; |
| gint i, n; |
| |
| GST_DEBUG_OBJECT (trans, |
| "Transforming caps %" GST_PTR_FORMAT " in direction %s", caps, |
| (direction == GST_PAD_SINK) ? "sink" : "src"); |
| |
| 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; |
| |
| /* make copy */ |
| structure = gst_structure_copy (structure); |
| |
| /* If the features are non-sysmem we can only do passthrough */ |
| if (!gst_caps_features_is_any (features) |
| && gst_caps_features_is_equal (features, |
| GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)) { |
| 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); |
| } |
| } |
| gst_caps_append_structure_full (ret, structure, |
| gst_caps_features_copy (features)); |
| } |
| |
| if (filter) { |
| GstCaps *intersection; |
| |
| intersection = |
| gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST); |
| gst_caps_unref (ret); |
| ret = intersection; |
| } |
| |
| GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret); |
| |
| return ret; |
| } |
| |
| static gboolean |
| gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in, |
| GstVideoInfo * in_info, GstCaps * out, GstVideoInfo * out_info) |
| { |
| GstVideoScale *videoscale = GST_VIDEO_SCALE (filter); |
| gint from_dar_n, from_dar_d, to_dar_n, to_dar_d; |
| |
| 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; |
| } |
| |
| videoscale->borders_w = videoscale->borders_h = 0; |
| if (to_dar_n != from_dar_n || to_dar_d != from_dar_d) { |
| if (videoscale->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) { |
| videoscale->borders_h = out_info->height - to_h; |
| videoscale->borders_w = 0; |
| } else { |
| to_w = gst_util_uint64_scale_int (out_info->height, n, d); |
| g_assert (to_w <= out_info->width); |
| videoscale->borders_h = 0; |
| videoscale->borders_w = out_info->width - to_w; |
| } |
| } else { |
| GST_WARNING_OBJECT (videoscale, "Can't calculate borders"); |
| } |
| } else { |
| GST_WARNING_OBJECT (videoscale, "Can't keep DAR!"); |
| } |
| } |
| |
| if (in_info->width == out_info->width && in_info->height == out_info->height |
| && videoscale->borders_w == 0 && videoscale->borders_h == 0) { |
| 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 ("videoscale"); |
| |
| switch (videoscale->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, videoscale->envelope, |
| GST_VIDEO_RESAMPLER_OPT_SHARPNESS, G_TYPE_DOUBLE, videoscale->sharpness, |
| GST_VIDEO_RESAMPLER_OPT_SHARPEN, G_TYPE_DOUBLE, videoscale->sharpen, |
| GST_VIDEO_CONVERTER_OPT_DEST_X, G_TYPE_INT, videoscale->borders_w / 2, |
| GST_VIDEO_CONVERTER_OPT_DEST_Y, G_TYPE_INT, videoscale->borders_h / 2, |
| GST_VIDEO_CONVERTER_OPT_DEST_WIDTH, G_TYPE_INT, |
| out_info->width - videoscale->borders_w, |
| GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT, |
| out_info->height - videoscale->borders_h, |
| GST_VIDEO_CONVERTER_OPT_MATRIX_MODE, GST_TYPE_VIDEO_MATRIX_MODE, |
| GST_VIDEO_MATRIX_MODE_NONE, GST_VIDEO_CONVERTER_OPT_DITHER_METHOD, |
| GST_TYPE_VIDEO_DITHER_METHOD, GST_VIDEO_DITHER_NONE, |
| GST_VIDEO_CONVERTER_OPT_CHROMA_MODE, GST_TYPE_VIDEO_CHROMA_MODE, |
| GST_VIDEO_CHROMA_MODE_NONE, |
| GST_VIDEO_CONVERTER_OPT_THREADS, G_TYPE_UINT, videoscale->n_threads, |
| NULL); |
| |
| if (videoscale->gamma_decode) { |
| gst_structure_set (options, |
| GST_VIDEO_CONVERTER_OPT_GAMMA_MODE, GST_TYPE_VIDEO_GAMMA_MODE, |
| GST_VIDEO_GAMMA_MODE_REMAP, NULL); |
| } |
| |
| if (videoscale->convert) |
| gst_video_converter_free (videoscale->convert); |
| videoscale->convert = gst_video_converter_new (in_info, out_info, options); |
| } |
| |
| GST_DEBUG_OBJECT (videoscale, "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, |
| videoscale->borders_w, videoscale->borders_h, out_info->size); |
| |
| return TRUE; |
| } |
| |
| static GstCaps * |
| gst_video_scale_fixate_caps (GstBaseTransform * base, GstPadDirection direction, |
| GstCaps * caps, GstCaps * othercaps) |
| { |
| GstStructure *ins, *outs; |
| const GValue *from_par, *to_par; |
| GValue fpar = { 0, }, tpar = { |
| 0,}; |
| |
| othercaps = gst_caps_truncate (othercaps); |
| othercaps = gst_caps_make_writable (othercaps); |
| |
| GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT |
| " based on caps %" GST_PTR_FORMAT, othercaps, caps); |
| |
| ins = gst_caps_get_structure (caps, 0); |
| outs = gst_caps_get_structure (othercaps, 0); |
| |
| from_par = gst_structure_get_value (ins, "pixel-aspect-ratio"); |
| to_par = gst_structure_get_value (outs, "pixel-aspect-ratio"); |
| |
| /* If we're fixating from the sinkpad we always set the PAR and |
| * assume that missing PAR on the sinkpad means 1/1 and |
| * missing PAR on the srcpad means undefined |
| */ |
| if (direction == GST_PAD_SINK) { |
| if (!from_par) { |
| g_value_init (&fpar, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&fpar, 1, 1); |
| from_par = &fpar; |
| } |
| if (!to_par) { |
| g_value_init (&tpar, GST_TYPE_FRACTION_RANGE); |
| gst_value_set_fraction_range_full (&tpar, 1, G_MAXINT, G_MAXINT, 1); |
| to_par = &tpar; |
| } |
| } else { |
| if (!to_par) { |
| g_value_init (&tpar, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&tpar, 1, 1); |
| to_par = &tpar; |
| |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1, |
| NULL); |
| } |
| if (!from_par) { |
| g_value_init (&fpar, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&fpar, 1, 1); |
| from_par = &fpar; |
| } |
| } |
| |
| /* we have both PAR but they might not be fixated */ |
| { |
| gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d; |
| gint w = 0, h = 0; |
| gint from_dar_n, from_dar_d; |
| gint num, den; |
| |
| /* from_par should be fixed */ |
| g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps); |
| |
| from_par_n = gst_value_get_fraction_numerator (from_par); |
| from_par_d = gst_value_get_fraction_denominator (from_par); |
| |
| gst_structure_get_int (ins, "width", &from_w); |
| gst_structure_get_int (ins, "height", &from_h); |
| |
| gst_structure_get_int (outs, "width", &w); |
| gst_structure_get_int (outs, "height", &h); |
| |
| /* if both width and height are already fixed, we can't do anything |
| * about it anymore */ |
| if (w && h) { |
| guint n, d; |
| |
| GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating", |
| w, h); |
| if (!gst_value_is_fixed (to_par)) { |
| if (gst_video_calculate_display_ratio (&n, &d, from_w, from_h, |
| from_par_n, from_par_d, w, h)) { |
| GST_DEBUG_OBJECT (base, "fixating to_par to %dx%d", n, d); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio")) |
| gst_structure_fixate_field_nearest_fraction (outs, |
| "pixel-aspect-ratio", n, d); |
| else if (n != d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| n, d, NULL); |
| } |
| } |
| goto done; |
| } |
| |
| /* Calculate input DAR */ |
| if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d, |
| &from_dar_n, &from_dar_d)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| GST_DEBUG_OBJECT (base, "Input DAR is %d/%d", from_dar_n, from_dar_d); |
| |
| /* If either width or height are fixed there's not much we |
| * can do either except choosing a height or width and PAR |
| * that matches the DAR as good as possible |
| */ |
| if (h) { |
| GstStructure *tmp; |
| gint set_w, set_par_n, set_par_d; |
| |
| GST_DEBUG_OBJECT (base, "height is fixed (%d)", h); |
| |
| /* If the PAR is fixed too, there's not much to do |
| * except choosing the width that is nearest to the |
| * width with the same DAR */ |
| if (gst_value_is_fixed (to_par)) { |
| to_par_n = gst_value_get_fraction_numerator (to_par); |
| to_par_d = gst_value_get_fraction_denominator (to_par); |
| |
| GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d); |
| |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d, |
| to_par_n, &num, &den)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| w = (guint) gst_util_uint64_scale_int (h, num, den); |
| gst_structure_fixate_field_nearest_int (outs, "width", w); |
| |
| goto done; |
| } |
| |
| /* The PAR is not fixed and it's quite likely that we can set |
| * an arbitrary PAR. */ |
| |
| /* Check if we can keep the input width */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "width", from_w); |
| gst_structure_get_int (tmp, "width", &set_w); |
| |
| /* Might have failed but try to keep the DAR nonetheless by |
| * adjusting the PAR */ |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, h, set_w, |
| &to_par_n, &to_par_d)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| gst_structure_free (tmp); |
| goto done; |
| } |
| |
| if (!gst_structure_has_field (tmp, "pixel-aspect-ratio")) |
| gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par); |
| gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio", |
| to_par_n, to_par_d); |
| gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n, |
| &set_par_d); |
| gst_structure_free (tmp); |
| |
| /* Check if the adjusted PAR is accepted */ |
| if (set_par_n == to_par_n && set_par_d == to_par_d) { |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, |
| "pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d, |
| NULL); |
| goto done; |
| } |
| |
| /* Otherwise scale the width to the new PAR and check if the |
| * adjusted with is accepted. If all that fails we can't keep |
| * the DAR */ |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d, |
| set_par_n, &num, &den)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| w = (guint) gst_util_uint64_scale_int (h, num, den); |
| gst_structure_fixate_field_nearest_int (outs, "width", w); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| |
| goto done; |
| } else if (w) { |
| GstStructure *tmp; |
| gint set_h, set_par_n, set_par_d; |
| |
| GST_DEBUG_OBJECT (base, "width is fixed (%d)", w); |
| |
| /* If the PAR is fixed too, there's not much to do |
| * except choosing the height that is nearest to the |
| * height with the same DAR */ |
| if (gst_value_is_fixed (to_par)) { |
| to_par_n = gst_value_get_fraction_numerator (to_par); |
| to_par_d = gst_value_get_fraction_denominator (to_par); |
| |
| GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d); |
| |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d, |
| to_par_n, &num, &den)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| h = (guint) gst_util_uint64_scale_int (w, den, num); |
| gst_structure_fixate_field_nearest_int (outs, "height", h); |
| |
| goto done; |
| } |
| |
| /* The PAR is not fixed and it's quite likely that we can set |
| * an arbitrary PAR. */ |
| |
| /* Check if we can keep the input height */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "height", from_h); |
| gst_structure_get_int (tmp, "height", &set_h); |
| |
| /* Might have failed but try to keep the DAR nonetheless by |
| * adjusting the PAR */ |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, w, |
| &to_par_n, &to_par_d)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| gst_structure_free (tmp); |
| goto done; |
| } |
| if (!gst_structure_has_field (tmp, "pixel-aspect-ratio")) |
| gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par); |
| gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio", |
| to_par_n, to_par_d); |
| gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n, |
| &set_par_d); |
| gst_structure_free (tmp); |
| |
| /* Check if the adjusted PAR is accepted */ |
| if (set_par_n == to_par_n && set_par_d == to_par_d) { |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "height", G_TYPE_INT, set_h, |
| "pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d, |
| NULL); |
| goto done; |
| } |
| |
| /* Otherwise scale the height to the new PAR and check if the |
| * adjusted with is accepted. If all that fails we can't keep |
| * the DAR */ |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d, |
| set_par_n, &num, &den)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| h = (guint) gst_util_uint64_scale_int (w, den, num); |
| gst_structure_fixate_field_nearest_int (outs, "height", h); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| |
| goto done; |
| } else if (gst_value_is_fixed (to_par)) { |
| GstStructure *tmp; |
| gint set_h, set_w, f_h, f_w; |
| |
| to_par_n = gst_value_get_fraction_numerator (to_par); |
| to_par_d = gst_value_get_fraction_denominator (to_par); |
| |
| /* Calculate scale factor for the PAR change */ |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n, |
| to_par_d, &num, &den)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| /* Try to keep the input height (because of interlacing) */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "height", from_h); |
| gst_structure_get_int (tmp, "height", &set_h); |
| |
| /* This might have failed but try to scale the width |
| * to keep the DAR nonetheless */ |
| w = (guint) gst_util_uint64_scale_int (set_h, num, den); |
| gst_structure_fixate_field_nearest_int (tmp, "width", w); |
| gst_structure_get_int (tmp, "width", &set_w); |
| gst_structure_free (tmp); |
| |
| /* We kept the DAR and the height is nearest to the original height */ |
| if (set_w == w) { |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, set_h, NULL); |
| goto done; |
| } |
| |
| f_h = set_h; |
| f_w = set_w; |
| |
| /* If the former failed, try to keep the input width at least */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "width", from_w); |
| gst_structure_get_int (tmp, "width", &set_w); |
| |
| /* This might have failed but try to scale the width |
| * to keep the DAR nonetheless */ |
| h = (guint) gst_util_uint64_scale_int (set_w, den, num); |
| gst_structure_fixate_field_nearest_int (tmp, "height", h); |
| gst_structure_get_int (tmp, "height", &set_h); |
| gst_structure_free (tmp); |
| |
| /* We kept the DAR and the width is nearest to the original width */ |
| if (set_h == h) { |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, set_h, NULL); |
| goto done; |
| } |
| |
| /* If all this failed, keep the height that was nearest to the orignal |
| * height and the nearest possible width. This changes the DAR but |
| * there's not much else to do here. |
| */ |
| gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT, |
| f_h, NULL); |
| goto done; |
| } else { |
| GstStructure *tmp; |
| gint set_h, set_w, set_par_n, set_par_d, tmp2; |
| |
| /* width, height and PAR are not fixed but passthrough is not possible */ |
| |
| /* First try to keep the height and width as good as possible |
| * and scale PAR */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "height", from_h); |
| gst_structure_get_int (tmp, "height", &set_h); |
| gst_structure_fixate_field_nearest_int (tmp, "width", from_w); |
| gst_structure_get_int (tmp, "width", &set_w); |
| |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w, |
| &to_par_n, &to_par_d)) { |
| GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| 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 (set_h, num, den); |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "width", w); |
| gst_structure_get_int (tmp, "width", &tmp2); |
| gst_structure_free (tmp); |
| |
| if (tmp2 == w) { |
| gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height", |
| G_TYPE_INT, set_h, NULL); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| goto done; |
| } |
| |
| /* ... or try the same with the height */ |
| h = (guint) gst_util_uint64_scale_int (set_w, den, num); |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "height", h); |
| gst_structure_get_int (tmp, "height", &tmp2); |
| gst_structure_free (tmp); |
| |
| if (tmp2 == h) { |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, tmp2, NULL); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| goto done; |
| } |
| |
| /* If all fails we can't keep the DAR and take the nearest values |
| * for everything from the first try */ |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, set_h, NULL); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| } |
| } |
| |
| done: |
| GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps); |
| |
| if (from_par == &fpar) |
| g_value_unset (&fpar); |
| if (to_par == &tpar) |
| g_value_unset (&tpar); |
| |
| return othercaps; |
| } |
| |
| #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_scale_transform_frame (GstVideoFilter * filter, |
| GstVideoFrame * in_frame, GstVideoFrame * out_frame) |
| { |
| GstVideoScale *videoscale = GST_VIDEO_SCALE_CAST (filter); |
| GstFlowReturn ret = GST_FLOW_OK; |
| |
| GST_CAT_DEBUG_OBJECT (CAT_PERFORMANCE, filter, "doing video scaling"); |
| |
| gst_video_converter_frame (videoscale->convert, in_frame, out_frame); |
| |
| return ret; |
| } |
| |
| static gboolean |
| gst_video_scale_src_event (GstBaseTransform * trans, GstEvent * event) |
| { |
| GstVideoScale *videoscale = GST_VIDEO_SCALE_CAST (trans); |
| GstVideoFilter *filter = GST_VIDEO_FILTER_CAST (trans); |
| gboolean ret; |
| gdouble a; |
| GstStructure *structure; |
| |
| GST_DEBUG_OBJECT (videoscale, "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 (gst_mini_object_make_writable (GST_MINI_OBJECT (event))); |
| |
| structure = (GstStructure *) gst_event_get_structure (event); |
| if (gst_structure_get_double (structure, "pointer_x", &a)) { |
| gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, |
| a * filter->in_info.width / filter->out_info.width, NULL); |
| } |
| if (gst_structure_get_double (structure, "pointer_y", &a)) { |
| gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE, |
| a * filter->in_info.height / filter->out_info.height, NULL); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| |
| ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event); |
| |
| return ret; |
| } |
| |
| static gboolean |
| plugin_init (GstPlugin * plugin) |
| { |
| if (!gst_element_register (plugin, "videoscale", GST_RANK_NONE, |
| GST_TYPE_VIDEO_SCALE)) |
| return FALSE; |
| |
| GST_DEBUG_CATEGORY_INIT (video_scale_debug, "videoscale", 0, |
| "videoscale element"); |
| GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE"); |
| |
| return TRUE; |
| } |
| |
| GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, |
| GST_VERSION_MINOR, |
| videoscale, |
| "Resizes video", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, |
| GST_PACKAGE_ORIGIN) |
