268 lines
6.2 KiB
C
268 lines
6.2 KiB
C
/* GStreamer
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*
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* Copyright (C) 2016 Igalia
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*
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* Authors:
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* Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
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* Javier Martin <javiermartin@by.com.es>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <drm_fourcc.h>
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#include "gstkmsutils.h"
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/* *INDENT-OFF* */
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static const struct
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{
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guint32 fourcc;
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GstVideoFormat format;
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} format_map[] = {
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#define DEF_FMT(fourcc, fmt) \
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{ DRM_FORMAT_##fourcc,GST_VIDEO_FORMAT_##fmt }
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/* Keep sorted by decreasing quality, refer to GST_VIDEO_FORMATS_ALL order
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* if unsure */
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/* 32bits/p RGB with Alpha */
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DEF_FMT (ARGB8888, BGRA),
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DEF_FMT (ABGR8888, RGBA),
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/* 16bits/c YUV 4:2:0 */
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DEF_FMT (P016, P016_LE),
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/* 16bits/c YUV 4:2:0 */
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DEF_FMT (P010, P010_10LE),
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/* YUV 4:4:4 */
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DEF_FMT (NV24, NV24),
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/* 32bits/p RGB opaque */
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DEF_FMT (XRGB8888, BGRx),
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DEF_FMT (XBGR8888, RGBx),
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/* 24bits RGB opaque */
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DEF_FMT (BGR888, RGB),
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DEF_FMT (RGB888, BGR),
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/* 8bits/c YUV 4:2:2 */
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DEF_FMT (YUV422, Y42B),
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DEF_FMT (NV61, NV61),
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DEF_FMT (NV16, NV16),
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DEF_FMT (UYVY, UYVY),
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DEF_FMT (YVYU, YVYU),
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DEF_FMT (YUYV, YUY2),
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/* 8bits/c YUV 4:2:0 */
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DEF_FMT (YUV420, I420),
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DEF_FMT (YVU420, YV12),
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DEF_FMT (NV21, NV21),
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DEF_FMT (NV12, NV12),
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/* 16bits/p RGB */
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DEF_FMT (RGB565, RGB16),
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DEF_FMT (BGR565, BGR16),
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#undef DEF_FMT
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};
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/* *INDENT-ON* */
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GstVideoFormat
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gst_video_format_from_drm (guint32 drmfmt)
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{
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gint i;
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for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
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if (format_map[i].fourcc == drmfmt)
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return format_map[i].format;
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}
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return GST_VIDEO_FORMAT_UNKNOWN;
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}
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guint32
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gst_drm_format_from_video (GstVideoFormat fmt)
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{
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gint i;
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for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
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if (format_map[i].format == fmt)
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return format_map[i].fourcc;
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}
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return 0;
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}
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guint32
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gst_drm_bpp_from_drm (guint32 drmfmt)
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{
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guint32 bpp;
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switch (drmfmt) {
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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case DRM_FORMAT_YUV422:
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case DRM_FORMAT_NV12:
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case DRM_FORMAT_NV21:
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case DRM_FORMAT_NV16:
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case DRM_FORMAT_NV61:
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case DRM_FORMAT_NV24:
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bpp = 8;
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break;
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case DRM_FORMAT_P010:
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bpp = 10;
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break;
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case DRM_FORMAT_UYVY:
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case DRM_FORMAT_YUYV:
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case DRM_FORMAT_YVYU:
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case DRM_FORMAT_P016:
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case DRM_FORMAT_RGB565:
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case DRM_FORMAT_BGR565:
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bpp = 16;
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break;
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case DRM_FORMAT_BGR888:
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case DRM_FORMAT_RGB888:
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bpp = 24;
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break;
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default:
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bpp = 32;
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break;
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}
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return bpp;
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}
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guint32
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gst_drm_height_from_drm (guint32 drmfmt, guint32 height)
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{
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guint32 ret;
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switch (drmfmt) {
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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case DRM_FORMAT_YUV422:
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case DRM_FORMAT_NV12:
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case DRM_FORMAT_NV21:
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case DRM_FORMAT_P010:
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case DRM_FORMAT_P016:
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ret = height * 3 / 2;
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break;
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case DRM_FORMAT_NV16:
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case DRM_FORMAT_NV61:
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ret = height * 2;
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break;
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case DRM_FORMAT_NV24:
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ret = height * 3;
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break;
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default:
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ret = height;
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break;
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}
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return ret;
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}
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static GstStructure *
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gst_video_format_to_structure (GstVideoFormat format)
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{
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GstStructure *structure;
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structure = NULL;
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if (format != GST_VIDEO_FORMAT_UNKNOWN)
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structure = gst_structure_new ("video/x-raw", "format", G_TYPE_STRING,
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gst_video_format_to_string (format), NULL);
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return structure;
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}
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GstCaps *
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gst_kms_sink_caps_template_fill (void)
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{
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gint i;
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GstCaps *caps;
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GstStructure *template;
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caps = gst_caps_new_empty ();
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for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
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template = gst_video_format_to_structure (format_map[i].format);
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gst_structure_set (template,
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"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
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gst_caps_append_structure (caps, template);
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}
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return gst_caps_simplify (caps);
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}
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static const gint device_par_map[][2] = {
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{1, 1}, /* regular screen */
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{16, 15}, /* PAL TV */
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{11, 10}, /* 525 line Rec.601 video */
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{54, 59}, /* 625 line Rec.601 video */
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{64, 45}, /* 1280x1024 on 16:9 display */
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{5, 3}, /* 1280x1024 on 4:3 display */
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{4, 3} /* 800x600 on 16:9 display */
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};
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#define DELTA(ratio, idx, w) \
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(ABS(ratio - ((gdouble)device_par_map[idx][w] / device_par_map[idx][!(w)])))
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void
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gst_video_calculate_device_ratio (guint dev_width, guint dev_height,
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guint dev_width_mm, guint dev_height_mm,
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guint * dpy_par_n, guint * dpy_par_d)
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{
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gdouble ratio, delta, cur_delta;
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gint i, j, index, windex;
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/* First, calculate the "real" ratio based on the X values; which is
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* the "physical" w/h divided by the w/h in pixels of the display */
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if (dev_width == 0 || dev_height == 0
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|| dev_width_mm == 0 || dev_height_mm == 0)
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ratio = 1.0;
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else
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ratio = (gdouble) (dev_width_mm * dev_height) / (dev_height_mm * dev_width);
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/* Now, find the one from device_par_map[][2] with the lowest delta
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* to the real one */
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delta = DELTA (ratio, 0, 0);
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index = 0;
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windex = 0;
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for (i = 1; i < G_N_ELEMENTS (device_par_map); i++) {
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for (j = 0; j < 2; j++) {
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cur_delta = DELTA (ratio, i, j);
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if (cur_delta < delta) {
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index = i;
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windex = j;
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delta = cur_delta;
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}
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}
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}
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if (dpy_par_n)
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*dpy_par_n = device_par_map[index][windex];
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if (dpy_par_d)
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*dpy_par_d = device_par_map[index][windex ^ 1];
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}
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