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138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/*
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* GStreamer
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* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gstvdpvideobuffer.h"
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#include "gstvdputils.h"
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static void
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gst_vdp_video_remove_pixel_aspect_ratio (GstStructure * structure)
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{
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gint par_n, par_d;
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if (gst_structure_get_fraction (structure, "pixel-aspect-ratio", &par_n,
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&par_d)) {
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gint width;
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gst_structure_get_int (structure, "width", &width);
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width = gst_util_uint64_scale_int (width, par_n, par_d);
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gst_structure_set (structure, "width", G_TYPE_INT, width, NULL);
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gst_structure_remove_field (structure, "pixel-aspect-ratio");
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}
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}
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GstCaps *
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gst_vdp_video_to_output_caps (GstCaps * video_caps)
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{
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GstCaps *output_caps;
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gint i;
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g_return_val_if_fail (GST_IS_CAPS (video_caps), NULL);
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output_caps = gst_caps_copy (video_caps);
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for (i = 0; i < gst_caps_get_size (video_caps); i++) {
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GstStructure *structure, *rgb_structure;
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structure = gst_caps_get_structure (output_caps, i);
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if (!gst_structure_has_name (structure, "video/x-vdpau-video"))
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goto not_video_error;
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rgb_structure = gst_structure_copy (structure);
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gst_structure_set_name (structure, "video/x-vdpau-output");
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gst_structure_remove_field (structure, "chroma-type");
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gst_vdp_video_remove_pixel_aspect_ratio (structure);
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gst_structure_set_name (rgb_structure, "video/x-raw-rgb");
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gst_structure_remove_field (rgb_structure, "chroma-type");
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gst_vdp_video_remove_pixel_aspect_ratio (rgb_structure);
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gst_caps_append_structure (output_caps, rgb_structure);
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}
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return output_caps;
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error:
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gst_caps_unref (output_caps);
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return NULL;
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not_video_error:
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GST_WARNING ("The caps weren't of type \"video/x-vdpau-video\"");
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goto error;
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}
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GstCaps *
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gst_vdp_yuv_to_video_caps (GstCaps * yuv_caps)
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{
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GstCaps *video_caps;
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gint i;
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g_return_val_if_fail (GST_IS_CAPS (yuv_caps), NULL);
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video_caps = gst_caps_copy (yuv_caps);
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for (i = 0; i < gst_caps_get_size (video_caps); i++) {
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GstStructure *structure;
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guint32 fourcc;
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VdpChromaType chroma_type;
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structure = gst_caps_get_structure (video_caps, i);
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if (!gst_structure_has_name (structure, "video/x-raw-yuv"))
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goto not_yuv_error;
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if (!gst_structure_get_fourcc (structure, "format", &fourcc))
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goto no_format_error;
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chroma_type = -1;
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for (i = 0; i < G_N_ELEMENTS (formats); i++) {
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if (formats[i].fourcc == fourcc) {
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chroma_type = formats[i].chroma_type;
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break;
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}
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}
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if (chroma_type == -1)
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goto no_chroma_error;
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/* now we transform the caps */
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gst_structure_set_name (structure, "video/x-vdpau-video");
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gst_structure_remove_field (structure, "format");
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gst_structure_set (structure, "chroma-type", G_TYPE_INT, chroma_type, NULL);
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}
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return video_caps;
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error:
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gst_caps_unref (video_caps);
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return NULL;
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not_yuv_error:
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GST_WARNING ("The caps weren't of type \"video/x-raw-yuv\"");
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goto error;
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no_format_error:
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GST_WARNING ("The caps didn't have a \"fourcc\" field");
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goto error;
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no_chroma_error:
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GST_WARNING ("The caps had an invalid \"fourcc\" field");
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goto error;
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}
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