gstreamer/sys/vdpau/gstvdputils.c

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/*
* GStreamer
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
*
* 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.
*/
#include "gstvdpvideobuffer.h"
#include "gstvdputils.h"
GstCaps *
gst_vdp_video_to_yuv_caps (GstCaps * caps, GstVdpDevice * device)
{
GstCaps *new_caps, *allowed_caps, *result;
gint i;
GstStructure *structure;
new_caps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (caps); i++) {
gint chroma_type;
GSList *fourcc = NULL, *iter;
structure = gst_caps_get_structure (caps, i);
if (gst_structure_get_int (structure, "chroma-type", &chroma_type)) {
/* calculate fourcc from chroma_type */
for (i = 0; i < G_N_ELEMENTS (formats); i++) {
if (formats[i].chroma_type == chroma_type) {
fourcc = g_slist_append (fourcc, GINT_TO_POINTER (formats[i].fourcc));
}
}
} else {
for (i = 0; i < G_N_ELEMENTS (formats); i++) {
fourcc = g_slist_append (fourcc, GINT_TO_POINTER (formats[i].fourcc));
}
}
for (iter = fourcc; iter; iter = iter->next) {
GstStructure *new_struct = gst_structure_copy (structure);
gst_structure_set_name (new_struct, "video/x-raw-yuv");
gst_structure_remove_field (new_struct, "chroma-type");
gst_structure_set (new_struct, "format", GST_TYPE_FOURCC,
GPOINTER_TO_INT (iter->data), NULL);
gst_caps_append_structure (new_caps, new_struct);
}
g_slist_free (fourcc);
}
structure = gst_caps_get_structure (caps, 0);
if (device) {
allowed_caps = gst_vdp_video_buffer_get_allowed_yuv_caps (device);
result = gst_caps_intersect (new_caps, allowed_caps);
gst_caps_unref (new_caps);
gst_caps_unref (allowed_caps);
} else
result = new_caps;
return result;
}
GstCaps *
gst_vdp_yuv_to_video_caps (GstCaps * caps, GstVdpDevice * device)
{
GstCaps *new_caps, *result;
gint i;
new_caps = gst_caps_copy (caps);
for (i = 0; i < gst_caps_get_size (new_caps); i++) {
GstStructure *structure = gst_caps_get_structure (new_caps, i);
guint32 fourcc;
if (gst_structure_get_fourcc (structure, "format", &fourcc)) {
gint chroma_type = -1;
/* calculate chroma type from fourcc */
for (i = 0; i < G_N_ELEMENTS (formats); i++) {
if (formats[i].fourcc == fourcc) {
chroma_type = formats[i].chroma_type;
break;
}
}
gst_structure_remove_field (structure, "format");
gst_structure_set (structure, "chroma-type", G_TYPE_INT, chroma_type,
NULL);
} else
gst_structure_set (structure, "chroma-type", GST_TYPE_INT_RANGE, 0, 2,
NULL);
gst_structure_set_name (structure, "video/x-vdpau-video");
}
if (device) {
GstCaps *allowed_caps;
allowed_caps = gst_vdp_video_buffer_get_allowed_video_caps (device);
result = gst_caps_intersect (new_caps, allowed_caps);
gst_caps_unref (new_caps);
gst_caps_unref (allowed_caps);
} else
result = new_caps;
return result;
}
GstCaps *
gst_vdp_video_to_output_caps (GstCaps * caps)
{
GstCaps *result;
gint i;
result = gst_caps_copy (caps);
for (i = 0; i < gst_caps_get_size (result); i++) {
GstStructure *structure = gst_caps_get_structure (result, i);
gint par_n, par_d;
gst_structure_set_name (structure, "video/x-vdpau-output");
gst_structure_remove_field (structure, "chroma-type");
if (gst_structure_get_fraction (structure, "pixel-aspect-ratio", &par_n,
&par_d)) {
gint width;
gst_structure_get_int (structure, "width", &width);
width = gst_util_uint64_scale_int (width, par_n, par_d);
gst_structure_set (structure, "width", G_TYPE_INT, width, NULL);
gst_structure_remove_field (structure, "pixel-aspect-ratio");
}
}
return result;
}