/* * GStreamer * Copyright (C) 2008 Julien Isorce * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:element-glcolorscale * * video frame scaling and colorspace conversion. * * * Scaling and Color space conversion * * Equivalent to glupload ! gldownload. * * * * Examples * |[ * gst-launch -v videotestsrc ! "video/x-raw-yuv" ! glcolorscale ! ximagesink * ]| A pipeline to test colorspace conversion. * FBO is required. |[ * gst-launch -v videotestsrc ! "video/x-raw-yuv, width=640, height=480, format=(fourcc)AYUV" ! glcolorscale ! \ * "video/x-raw-yuv, width=320, height=240, format=(fourcc)YV12" ! autovideosink * ]| A pipeline to test hardware scaling and colorspace conversion. * FBO and GLSL are required. * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstglcolorscale.h" #define GST_CAT_DEFAULT gst_gl_colorscale_debug GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); /* Source pad definition */ static GstStaticPadTemplate gst_gl_colorscale_src_pad_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_GL_VIDEO_CAPS) ); /* Source pad definition */ static GstStaticPadTemplate gst_gl_colorscale_sink_pad_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_GL_VIDEO_CAPS) ); /* Properties */ enum { PROP_0 }; #define DEBUG_INIT \ GST_DEBUG_CATEGORY_INIT (gst_gl_colorscale_debug, "glcolorscale", 0, "glcolorscale element"); G_DEFINE_TYPE_WITH_CODE (GstGLColorscale, gst_gl_colorscale, GST_TYPE_BASE_TRANSFORM, DEBUG_INIT); static void gst_gl_colorscale_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_gl_colorscale_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_gl_colorscale_reset (GstGLColorscale * colorscale); static gboolean gst_gl_colorscale_set_caps (GstBaseTransform * bt, GstCaps * incaps, GstCaps * outcaps); static GstCaps *gst_gl_colorscale_transform_caps (GstBaseTransform * bt, GstPadDirection direction, GstCaps * caps, GstCaps * filter); static GstCaps *gst_gl_colorscale_fixate_caps (GstBaseTransform * base, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps); static gboolean gst_gl_colorscale_start (GstBaseTransform * bt); static gboolean gst_gl_colorscale_stop (GstBaseTransform * bt); static GstFlowReturn gst_gl_colorscale_transform (GstBaseTransform * trans, GstBuffer * inbuf, GstBuffer * outbuf); static gboolean gst_gl_colorscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps, gsize * size); static void gst_gl_colorscale_class_init (GstGLColorscaleClass * klass) { GObjectClass *gobject_class; GstElementClass *element_class; gobject_class = (GObjectClass *) klass; element_class = GST_ELEMENT_CLASS (klass); gobject_class->set_property = gst_gl_colorscale_set_property; gobject_class->get_property = gst_gl_colorscale_get_property; gst_element_class_set_details_simple (element_class, "OpenGL color scale", "Filter/Effect", "Colorspace converter and video scaler", "Julien Isorce "); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_gl_colorscale_src_pad_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_gl_colorscale_sink_pad_template)); GST_BASE_TRANSFORM_CLASS (klass)->transform_caps = gst_gl_colorscale_transform_caps; GST_BASE_TRANSFORM_CLASS (klass)->fixate_caps = gst_gl_colorscale_fixate_caps; GST_BASE_TRANSFORM_CLASS (klass)->transform = gst_gl_colorscale_transform; GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_colorscale_start; GST_BASE_TRANSFORM_CLASS (klass)->stop = gst_gl_colorscale_stop; GST_BASE_TRANSFORM_CLASS (klass)->set_caps = gst_gl_colorscale_set_caps; GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size = gst_gl_colorscale_get_unit_size; } static void gst_gl_colorscale_init (GstGLColorscale * colorscale) { gst_gl_colorscale_reset (colorscale); } static void gst_gl_colorscale_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { //GstGLColorscale* colorscale = GST_GL_COLORSCALE (object); switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_gl_colorscale_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { //GstGLColorscale *colorscale = GST_GL_COLORSCALE (object); switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_gl_colorscale_reset (GstGLColorscale * colorscale) { if (colorscale->display) { g_object_unref (colorscale->display); colorscale->display = NULL; } } static gboolean gst_gl_colorscale_start (GstBaseTransform * bt) { //GstGLColorscale* colorscale = GST_GL_COLORSCALE (bt); return TRUE; } static gboolean gst_gl_colorscale_stop (GstBaseTransform * bt) { GstGLColorscale *colorscale = GST_GL_COLORSCALE (bt); gst_gl_colorscale_reset (colorscale); return TRUE; } static GstCaps * gst_gl_colorscale_transform_caps (GstBaseTransform * bt, GstPadDirection direction, GstCaps * caps, GstCaps * filter) { //GstGLColorscale* colorscale = GST_GL_COLORSCALE (bt); GstStructure *structure; GstCaps *newcaps; const GValue *framerate_value; const GValue *par_value; GST_DEBUG ("transform caps %" GST_PTR_FORMAT, caps); structure = gst_caps_get_structure (caps, 0); newcaps = gst_caps_new_empty_simple ("video/x-raw"); framerate_value = gst_structure_get_value (structure, "framerate"); par_value = gst_structure_get_value (structure, "pixel-aspect-ratio"); structure = gst_structure_copy (gst_caps_get_structure (newcaps, 0)); gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); gst_structure_set_value (structure, "framerate", framerate_value); if (par_value) gst_structure_set_value (structure, "pixel-aspect-ratio", par_value); else gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1, NULL); newcaps = gst_caps_merge_structure (newcaps, gst_structure_copy (structure)); GST_DEBUG ("new caps %" GST_PTR_FORMAT, newcaps); return newcaps; } /* from gst-plugins-base "videoscale" code */ static GstCaps * gst_gl_colorscale_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")); 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; } static gboolean gst_gl_colorscale_set_caps (GstBaseTransform * bt, GstCaps * incaps, GstCaps * outcaps) { GstGLColorscale *colorscale; GstVideoInfo in_vinfo, out_vinfo; gboolean ret; GST_DEBUG ("called with %" GST_PTR_FORMAT, incaps); ret = FALSE; colorscale = GST_GL_COLORSCALE (bt); ret = gst_video_info_from_caps (&out_vinfo, outcaps); ret |= gst_video_info_from_caps (&in_vinfo, incaps); if (!ret) { GST_DEBUG ("bad caps"); return FALSE; } colorscale->output_video_format = GST_VIDEO_INFO_FORMAT (&out_vinfo); colorscale->output_video_width = GST_VIDEO_INFO_WIDTH (&out_vinfo); colorscale->output_video_height = GST_VIDEO_INFO_HEIGHT (&out_vinfo); colorscale->input_video_format = GST_VIDEO_INFO_FORMAT (&in_vinfo); colorscale->input_video_width = GST_VIDEO_INFO_WIDTH (&in_vinfo); colorscale->input_video_height = GST_VIDEO_INFO_HEIGHT (&in_vinfo); colorscale->display = gst_gl_display_new (); //init unvisible opengl context ret = gst_gl_display_create_context (colorscale->display, 0); if (!ret) { GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND, GST_GL_DISPLAY_ERR_MSG (colorscale->display), (NULL)); return FALSE; } //blocking call, init colorspace conversion if needed ret = gst_gl_display_init_upload (colorscale->display, colorscale->input_video_format, colorscale->output_video_width, colorscale->output_video_height, colorscale->input_video_width, colorscale->input_video_height); if (!ret) { GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND, GST_GL_DISPLAY_ERR_MSG (colorscale->display), (NULL)); return FALSE; } //blocking call, init colorspace conversion if needed ret = gst_gl_display_init_download (colorscale->display, colorscale->output_video_format, colorscale->output_video_width, colorscale->output_video_height); if (!ret) GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND, GST_GL_DISPLAY_ERR_MSG (colorscale->display), (NULL)); return ret; } static gboolean gst_gl_colorscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps, gsize * size) { GstVideoInfo vinfo; if (gst_video_info_from_caps (&vinfo, caps)) { *size = GST_VIDEO_INFO_SIZE (&vinfo); } return TRUE; } static GstFlowReturn gst_gl_colorscale_transform (GstBaseTransform * trans, GstBuffer * inbuf, GstBuffer * outbuf) { /*GstGLColorscale *colorscale; */ gboolean ok; /*colorscale = GST_GL_COLORSCALE (trans); */ ok = TRUE; /* FIXME: implement using GstGLMeta */ /*//blocking call GstGLBuffer *gl_temp_buffer = gst_gl_buffer_new (colorscale->display, colorscale->output_video_width, colorscale->output_video_height); GST_DEBUG ("input size %p size %d", GST_BUFFER_DATA (inbuf), GST_BUFFER_SIZE (inbuf)); //blocking call ok = gst_gl_display_do_upload (colorscale->display, gl_temp_buffer->texture, colorscale->input_video_width, colorscale->input_video_height, GST_BUFFER_DATA (inbuf)); GST_DEBUG ("output size %p size %d", GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf)); //blocking call ok &= gst_gl_display_do_download (colorscale->display, gl_temp_buffer->texture, gl_temp_buffer->width, gl_temp_buffer->height, GST_BUFFER_DATA (outbuf)); gst_buffer_unref (GST_BUFFER_CAST (gl_temp_buffer)); */ if (ok) return GST_FLOW_OK; else return GST_FLOW_EOS; }