/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Copyright (C) 2005-2012 David Schleef * Copyright (C) <2019> Seungha Yang * * 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-cudaconvert * @title: cudaconvert * * Convert video frames between supported video formats. * * ## Example launch line * |[ * gst-launch-1.0 -v videotestsrc ! video/x-raw,format=Y444_16LE ! cudaupload ! cudaconvert ! cudadownload ! autovideosink * ]| * This will output a test video (generated in Y444_16LE format) in a video * window. If the video sink selected does not support Y444_16LE * cudaconvert will automatically convert the video to a format understood * by the video sink. * * Since: 1.20 */ #ifdef HAVE_CONFIG_H # include #endif #include #include "gstcudaconvert.h" GST_DEBUG_CATEGORY_STATIC (gst_cuda_convert_debug); #define GST_CAT_DEFAULT gst_cuda_convert_debug #define gst_cuda_convert_parent_class parent_class G_DEFINE_TYPE (GstCudaConvert, gst_cuda_convert, GST_TYPE_CUDA_BASE_FILTER); static GstCaps *gst_cuda_convert_transform_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps, GstCaps * filter); static GstCaps *gst_cuda_convert_fixate_caps (GstBaseTransform * base, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps); static gboolean gst_cuda_convert_filter_meta (GstBaseTransform * trans, GstQuery * query, GType api, const GstStructure * params); static gboolean gst_cuda_convert_set_info (GstCudaBaseTransform * btrans, GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info); /* copies the given caps */ static GstCaps * gst_cuda_convert_caps_remove_format_info (GstCaps * caps) { GstStructure *st; GstCapsFeatures *f; gint i, n; GstCaps *res; GstCapsFeatures *feature = gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY); res = gst_caps_new_empty (); n = gst_caps_get_size (caps); for (i = 0; i < n; i++) { st = gst_caps_get_structure (caps, i); f = gst_caps_get_features (caps, i); /* If this is already expressed by the existing caps * skip this structure */ if (i > 0 && gst_caps_is_subset_structure_full (res, st, f)) continue; st = gst_structure_copy (st); /* Only remove format info for the cases when we can actually convert */ if (!gst_caps_features_is_any (f) && gst_caps_features_is_equal (f, feature)) gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site", NULL); gst_caps_append_structure_full (res, st, gst_caps_features_copy (f)); } gst_caps_features_free (feature); return res; } /* * This is an incomplete matrix of in formats and a score for the prefered output * format. * * out: RGB24 RGB16 ARGB AYUV YUV444 YUV422 YUV420 YUV411 YUV410 PAL GRAY * in * RGB24 0 2 1 2 2 3 4 5 6 7 8 * RGB16 1 0 1 2 2 3 4 5 6 7 8 * ARGB 2 3 0 1 4 5 6 7 8 9 10 * AYUV 3 4 1 0 2 5 6 7 8 9 10 * YUV444 2 4 3 1 0 5 6 7 8 9 10 * YUV422 3 5 4 2 1 0 6 7 8 9 10 * YUV420 4 6 5 3 2 1 0 7 8 9 10 * YUV411 4 6 5 3 2 1 7 0 8 9 10 * YUV410 6 8 7 5 4 3 2 1 0 9 10 * PAL 1 3 2 6 4 6 7 8 9 0 10 * GRAY 1 4 3 2 1 5 6 7 8 9 0 * * PAL or GRAY are never 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) 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_cuda_convert_class_init (GstCudaConvertClass * klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass); GstCudaBaseTransformClass *btrans_class = GST_CUDA_BASE_TRANSFORM_CLASS (klass); gst_element_class_set_static_metadata (element_class, "CUDA Colorspace converter", "Filter/Converter/Video/Hardware", "Converts video from one colorspace to another using CUDA", "Seungha Yang "); trans_class->passthrough_on_same_caps = TRUE; trans_class->transform_caps = GST_DEBUG_FUNCPTR (gst_cuda_convert_transform_caps); trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_cuda_convert_fixate_caps); trans_class->filter_meta = GST_DEBUG_FUNCPTR (gst_cuda_convert_filter_meta); btrans_class->set_info = GST_DEBUG_FUNCPTR (gst_cuda_convert_set_info); GST_DEBUG_CATEGORY_INIT (gst_cuda_convert_debug, "cudaconvert", 0, "Video ColorSpace convert using CUDA"); } static void gst_cuda_convert_init (GstCudaConvert * convert) { } static GstCaps * gst_cuda_convert_transform_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps, GstCaps * filter) { GstCaps *tmp, *tmp2; GstCaps *result; /* Get all possible caps that we can transform to */ tmp = gst_cuda_convert_caps_remove_format_info (caps); if (filter) { tmp2 = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST); gst_caps_unref (tmp); tmp = tmp2; } result = tmp; GST_DEBUG_OBJECT (trans, "transformed %" GST_PTR_FORMAT " into %" GST_PTR_FORMAT, caps, result); return result; } /* fork of gstvideoconvert */ static void gst_cuda_convert_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"); /* 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 GstCaps * gst_cuda_convert_fixate_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps) { GstCaps *result; GST_DEBUG_OBJECT (trans, "trying to fixate othercaps %" GST_PTR_FORMAT " based on caps %" GST_PTR_FORMAT, othercaps, caps); result = gst_caps_intersect (othercaps, caps); if (gst_caps_is_empty (result)) { gst_caps_unref (result); result = othercaps; } else { gst_caps_unref (othercaps); } GST_DEBUG_OBJECT (trans, "now fixating %" GST_PTR_FORMAT, result); result = gst_caps_make_writable (result); gst_cuda_convert_fixate_format (trans, caps, result); /* fixate remaining fields */ result = gst_caps_fixate (result); if (direction == GST_PAD_SINK) { if (gst_caps_is_subset (caps, result)) { gst_caps_replace (&result, caps); } } return result; } static gboolean gst_cuda_convert_filter_meta (GstBaseTransform * trans, GstQuery * query, GType api, const GstStructure * params) { /* This element cannot passthrough the crop meta, because it would convert the * wrong sub-region of the image, and worst, our output image may not be large * enough for the crop to be applied later */ if (api == GST_VIDEO_CROP_META_API_TYPE) return FALSE; /* propose all other metadata upstream */ return TRUE; } static gboolean gst_cuda_convert_set_info (GstCudaBaseTransform * btrans, GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info) { /* these must match */ if (in_info->width != out_info->width || in_info->height != out_info->height || in_info->fps_n != out_info->fps_n || in_info->fps_d != out_info->fps_d) goto format_mismatch; /* if present, these must match too */ if (in_info->par_n != out_info->par_n || in_info->par_d != out_info->par_d) goto format_mismatch; /* if present, these must match too */ if (in_info->interlace_mode != out_info->interlace_mode) goto format_mismatch; return GST_CUDA_BASE_TRANSFORM_CLASS (parent_class)->set_info (btrans, incaps, in_info, outcaps, out_info); /* ERRORS */ format_mismatch: { GST_ERROR_OBJECT (btrans, "input and output formats do not match"); return FALSE; } }