/* GStreamer * Copyright (C) <1999> Erik Walthinsen * This file: * Copyright (C) 2003 Ronald Bultje * Copyright (C) 2010 David Schleef * * 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-colorspace * * Convert video frames between a great variety of colorspace formats. * * * Example launch line * |[ * gst-launch -v videotestsrc ! video/x-raw-yuv,format=\(fourcc\)YUY2 ! colorspace ! ximagesink * ]| * */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "gstcolorspace.h" #include GST_DEBUG_CATEGORY (colorspace_debug); #define GST_CAT_DEFAULT colorspace_debug GST_DEBUG_CATEGORY (colorspace_performance); #define CSP_VIDEO_CAPS \ "video/x-raw-yuv, width = "GST_VIDEO_SIZE_RANGE" , " \ "height="GST_VIDEO_SIZE_RANGE",framerate="GST_VIDEO_FPS_RANGE"," \ "format= (fourcc) { I420 , NV12 , NV21 , YV12 , YUY2 , Y42B , Y444 , YUV9 , YVU9 , Y41B , Y800 , Y8 , GREY , Y16 , UYVY , YVYU , IYU1 , v308 , AYUV, v210 } ;" \ GST_VIDEO_CAPS_RGB";" \ GST_VIDEO_CAPS_BGR";" \ GST_VIDEO_CAPS_RGBx";" \ GST_VIDEO_CAPS_xRGB";" \ GST_VIDEO_CAPS_BGRx";" \ GST_VIDEO_CAPS_xBGR";" \ GST_VIDEO_CAPS_RGBA";" \ GST_VIDEO_CAPS_ARGB";" \ GST_VIDEO_CAPS_BGRA";" \ GST_VIDEO_CAPS_ABGR";" \ GST_VIDEO_CAPS_RGB_16";" \ GST_VIDEO_CAPS_RGB_15";" \ "video/x-raw-rgb, bpp = (int)8, depth = (int)8, " \ "width = "GST_VIDEO_SIZE_RANGE" , " \ "height = " GST_VIDEO_SIZE_RANGE ", " \ "framerate = "GST_VIDEO_FPS_RANGE ";" \ GST_VIDEO_CAPS_GRAY8";" \ GST_VIDEO_CAPS_GRAY16("BIG_ENDIAN")";" \ GST_VIDEO_CAPS_GRAY16("LITTLE_ENDIAN")";" static GstStaticPadTemplate gst_csp_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (CSP_VIDEO_CAPS) ); static GstStaticPadTemplate gst_csp_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (CSP_VIDEO_CAPS) ); GType gst_csp_get_type (void); static gboolean gst_csp_set_caps (GstBaseTransform * btrans, GstCaps * incaps, GstCaps * outcaps); static gboolean gst_csp_get_unit_size (GstBaseTransform * btrans, GstCaps * caps, guint * size); static GstFlowReturn gst_csp_transform (GstBaseTransform * btrans, GstBuffer * inbuf, GstBuffer * outbuf); static GQuark _QRAWRGB; /* "video/x-raw-rgb" */ static GQuark _QRAWYUV; /* "video/x-raw-yuv" */ static GQuark _QALPHAMASK; /* "alpha_mask" */ /* copies the given caps */ static GstCaps * gst_csp_caps_remove_format_info (GstCaps * caps) { GstStructure *yuvst, *rgbst, *grayst; /* We know there's only one structure since we're given simple caps */ caps = gst_caps_copy (caps); yuvst = gst_caps_get_structure (caps, 0); gst_structure_set_name (yuvst, "video/x-raw-yuv"); gst_structure_remove_fields (yuvst, "format", "endianness", "depth", "bpp", "red_mask", "green_mask", "blue_mask", "alpha_mask", "palette_data", "color-matrix", NULL); rgbst = gst_structure_copy (yuvst); gst_structure_set_name (rgbst, "video/x-raw-rgb"); gst_structure_remove_fields (rgbst, "color-matrix", "chroma-site", NULL); grayst = gst_structure_copy (rgbst); gst_structure_set_name (grayst, "video/x-raw-gray"); gst_caps_append_structure (caps, rgbst); gst_caps_append_structure (caps, grayst); return caps; } static gboolean gst_csp_structure_is_alpha (GstStructure * s) { GQuark name; name = gst_structure_get_name_id (s); if (name == _QRAWRGB) { return gst_structure_id_has_field (s, _QALPHAMASK); } else if (name == _QRAWYUV) { guint32 fourcc; if (!gst_structure_get_fourcc (s, "format", &fourcc)) return FALSE; return (fourcc == GST_MAKE_FOURCC ('A', 'Y', 'U', 'V')); } return FALSE; } /* The caps can be transformed into any other caps with format info removed. * However, we should prefer passthrough, so if passthrough is possible, * put it first in the list. */ static GstCaps * gst_csp_transform_caps (GstBaseTransform * btrans, GstPadDirection direction, GstCaps * caps) { GstCaps *template; GstCaps *tmp, *tmp2; GstCaps *result; GstStructure *s; GstCaps *alpha, *non_alpha; template = gst_static_pad_template_get_caps (&gst_csp_src_template); result = gst_caps_copy (caps); /* Get all possible caps that we can transform to */ tmp = gst_csp_caps_remove_format_info (caps); tmp2 = gst_caps_intersect (tmp, template); gst_caps_unref (tmp); tmp = tmp2; /* Now move alpha formats to the beginning if caps is an alpha format * or at the end if caps is no alpha format */ alpha = gst_caps_new_empty (); non_alpha = gst_caps_new_empty (); while ((s = gst_caps_steal_structure (tmp, 0))) { if (gst_csp_structure_is_alpha (s)) gst_caps_append_structure (alpha, s); else gst_caps_append_structure (non_alpha, s); } s = gst_caps_get_structure (caps, 0); gst_caps_unref (tmp); if (gst_csp_structure_is_alpha (s)) { gst_caps_append (alpha, non_alpha); tmp = alpha; } else { gst_caps_append (non_alpha, alpha); tmp = non_alpha; } gst_caps_append (result, tmp); GST_DEBUG_OBJECT (btrans, "transformed %" GST_PTR_FORMAT " into %" GST_PTR_FORMAT, caps, result); return result; } static gboolean gst_csp_set_caps (GstBaseTransform * btrans, GstCaps * incaps, GstCaps * outcaps) { GstCsp *space; GstVideoFormat in_format; GstVideoFormat out_format; gint in_height, in_width; gint out_height, out_width; gint in_fps_n, in_fps_d, in_par_n, in_par_d; gint out_fps_n, out_fps_d, out_par_n, out_par_d; gboolean have_in_par, have_out_par; gboolean have_in_interlaced, have_out_interlaced; gboolean in_interlaced, out_interlaced; gboolean ret; ColorSpaceColorSpec in_spec, out_spec; space = GST_CSP (btrans); /* input caps */ ret = gst_video_format_parse_caps (incaps, &in_format, &in_width, &in_height); if (!ret) goto no_width_height; ret = gst_video_parse_caps_framerate (incaps, &in_fps_n, &in_fps_d); if (!ret) goto no_framerate; have_in_par = gst_video_parse_caps_pixel_aspect_ratio (incaps, &in_par_n, &in_par_d); have_in_interlaced = gst_video_format_parse_caps_interlaced (incaps, &in_interlaced); if (gst_video_format_is_rgb (in_format)) { in_spec = COLOR_SPEC_RGB; } else if (gst_video_format_is_yuv (in_format)) { const gchar *matrix = gst_video_parse_caps_color_matrix (incaps); if (matrix && g_str_equal (matrix, "hdtv")) in_spec = COLOR_SPEC_YUV_BT709; else in_spec = COLOR_SPEC_YUV_BT470_6; } else { in_spec = COLOR_SPEC_GRAY; } /* output caps */ ret = gst_video_format_parse_caps (outcaps, &out_format, &out_width, &out_height); if (!ret) goto no_width_height; ret = gst_video_parse_caps_framerate (outcaps, &out_fps_n, &out_fps_d); if (!ret) goto no_framerate; have_out_par = gst_video_parse_caps_pixel_aspect_ratio (outcaps, &out_par_n, &out_par_d); have_out_interlaced = gst_video_format_parse_caps_interlaced (incaps, &out_interlaced); if (gst_video_format_is_rgb (out_format)) { out_spec = COLOR_SPEC_RGB; } else if (gst_video_format_is_yuv (out_format)) { const gchar *matrix = gst_video_parse_caps_color_matrix (outcaps); if (matrix && g_str_equal (matrix, "hdtv")) out_spec = COLOR_SPEC_YUV_BT709; else out_spec = COLOR_SPEC_YUV_BT470_6; } else { out_spec = COLOR_SPEC_GRAY; } /* these must match */ if (in_width != out_width || in_height != out_height || in_fps_n != out_fps_n || in_fps_d != out_fps_d) goto format_mismatch; /* if present, these must match too */ if (have_in_par && have_out_par && (in_par_n != out_par_n || in_par_d != out_par_d)) goto format_mismatch; /* if present, these must match too */ if (have_in_interlaced && have_out_interlaced && in_interlaced != out_interlaced) goto format_mismatch; space->from_format = in_format; space->from_spec = in_spec; space->to_format = out_format; space->to_spec = out_spec; space->width = in_width; space->height = in_height; space->interlaced = in_interlaced; space->convert = colorspace_convert_new (out_format, out_spec, in_format, in_spec, in_width, in_height); if (space->convert) { colorspace_convert_set_interlaced (space->convert, in_interlaced); } /* palette, only for from data */ /* FIXME add palette handling */ #if 0 colorspace_convert_set_palette (convert, palette); #endif GST_DEBUG ("reconfigured %d %d", space->from_format, space->to_format); return TRUE; /* ERRORS */ no_width_height: { GST_ERROR_OBJECT (space, "did not specify width or height"); space->from_format = GST_VIDEO_FORMAT_UNKNOWN; space->to_format = GST_VIDEO_FORMAT_UNKNOWN; return FALSE; } no_framerate: { GST_ERROR_OBJECT (space, "did not specify framerate"); space->from_format = GST_VIDEO_FORMAT_UNKNOWN; space->to_format = GST_VIDEO_FORMAT_UNKNOWN; return FALSE; } format_mismatch: { GST_ERROR_OBJECT (space, "input and output formats do not match"); space->from_format = GST_VIDEO_FORMAT_UNKNOWN; space->to_format = GST_VIDEO_FORMAT_UNKNOWN; return FALSE; } } GST_BOILERPLATE (GstCsp, gst_csp, GstVideoFilter, GST_TYPE_VIDEO_FILTER); static void gst_csp_base_init (gpointer klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_csp_src_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_csp_sink_template)); gst_element_class_set_details_simple (element_class, " Colorspace converter", "Filter/Converter/Video", "Converts video from one colorspace to another", "GStreamer maintainers "); _QRAWRGB = g_quark_from_string ("video/x-raw-rgb"); _QRAWYUV = g_quark_from_string ("video/x-raw-yuv"); _QALPHAMASK = g_quark_from_string ("alpha_mask"); } static void gst_csp_finalize (GObject * obj) { GstCsp *space = GST_CSP (obj); if (space->palette) g_free (space->palette); G_OBJECT_CLASS (parent_class)->finalize (obj); } static void gst_csp_class_init (GstCspClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstBaseTransformClass *gstbasetransform_class = (GstBaseTransformClass *) klass; gobject_class->finalize = gst_csp_finalize; gstbasetransform_class->transform_caps = GST_DEBUG_FUNCPTR (gst_csp_transform_caps); gstbasetransform_class->set_caps = GST_DEBUG_FUNCPTR (gst_csp_set_caps); gstbasetransform_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_csp_get_unit_size); gstbasetransform_class->transform = GST_DEBUG_FUNCPTR (gst_csp_transform); gstbasetransform_class->passthrough_on_same_caps = TRUE; } static void gst_csp_init (GstCsp * space, GstCspClass * klass) { space->from_format = GST_VIDEO_FORMAT_UNKNOWN; space->to_format = GST_VIDEO_FORMAT_UNKNOWN; space->palette = NULL; } static gboolean gst_csp_get_unit_size (GstBaseTransform * btrans, GstCaps * caps, guint * size) { gboolean ret = TRUE; GstVideoFormat format; gint width, height; g_assert (size); ret = gst_video_format_parse_caps (caps, &format, &width, &height); if (ret) { *size = gst_video_format_get_size (format, width, height); } return ret; } static GstFlowReturn gst_csp_transform (GstBaseTransform * btrans, GstBuffer * inbuf, GstBuffer * outbuf) { GstCsp *space; space = GST_CSP (btrans); GST_DEBUG ("from %d -> to %d", space->from_format, space->to_format); if (G_UNLIKELY (space->from_format == GST_VIDEO_FORMAT_UNKNOWN || space->to_format == GST_VIDEO_FORMAT_UNKNOWN)) goto unknown_format; colorspace_convert_convert (space->convert, GST_BUFFER_DATA (outbuf), GST_BUFFER_DATA (inbuf)); /* baseclass copies timestamps */ GST_DEBUG ("from %d -> to %d done", space->from_format, space->to_format); return GST_FLOW_OK; /* ERRORS */ unknown_format: { GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL), ("attempting to convert colorspaces between unknown formats")); return GST_FLOW_NOT_NEGOTIATED; } #if 0 not_supported: { GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL), ("cannot convert between formats")); return GST_FLOW_NOT_SUPPORTED; } #endif } static gboolean plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (colorspace_debug, "colorspace", 0, "Colorspace Converter"); GST_DEBUG_CATEGORY_GET (colorspace_performance, "GST_PERFORMANCE"); return gst_element_register (plugin, "colorspace", GST_RANK_NONE, GST_TYPE_CSP); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "colorspace", "Colorspace conversion", plugin_init, VERSION, "LGPL", "", "")