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videoflip: Add support for YUY2, UVYV and YVYU colorspaces

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=644773
This commit is contained in:
Youness Alaoui 2011-03-14 19:14:07 -04:00 committed by Tim-Philipp Müller
parent 3e1c707495
commit a3ed3d9374
1 changed files with 212 additions and 2 deletions
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214
gst/videofilter/gstvideoflip.c
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@ -2,6 +2,7 @@
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003> David Schleef <ds@schleef.org>
* Copyright (C) <2010> Sebastian Dröge <sebastian.droege@collabora.co.uk>
* Copyright (C) <2011> Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -75,7 +76,10 @@ static GstStaticPadTemplate gst_video_flip_src_template =
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";"
GST_VIDEO_CAPS_YUV ("I420") ";"
GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV")
GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV") ";"
GST_VIDEO_CAPS_YUV ("YUY2") ";" GST_VIDEO_CAPS_YUV ("UYVY") ";"
GST_VIDEO_CAPS_YUV ("YVYU")
)
);
@ -91,7 +95,9 @@ static GstStaticPadTemplate gst_video_flip_sink_template =
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";"
GST_VIDEO_CAPS_YUV ("I420") ";"
GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV")
GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV") ";"
GST_VIDEO_CAPS_YUV ("YUY2") ";" GST_VIDEO_CAPS_YUV ("UYVY") ";"
GST_VIDEO_CAPS_YUV ("YVYU")
)
);
@ -563,6 +569,205 @@ gst_video_flip_packed_simple (GstVideoFlip * videoflip, guint8 * dest,
}
}
static void
gst_video_flip_y422 (GstVideoFlip * videoflip, guint8 * dest,
const guint8 * src)
{
gint x, y;
guint8 const *s = src;
guint8 *d = dest;
GstVideoFormat format = videoflip->format;
gint sw = videoflip->from_width;
gint sh = videoflip->from_height;
gint dw = videoflip->to_width;
gint dh = videoflip->to_height;
gint src_stride, dest_stride;
gint bpp;
gint y_offset;
gint u_offset;
gint v_offset;
gint y_stride;
gint u_stride;
gint v_stride;
src_stride = gst_video_format_get_row_stride (format, 0, sw);
dest_stride = gst_video_format_get_row_stride (format, 0, dw);
y_offset = gst_video_format_get_component_offset (format, 0, sw, sh);
u_offset = gst_video_format_get_component_offset (format, 1, sw, sh);
v_offset = gst_video_format_get_component_offset (format, 2, sw, sh);
y_stride = gst_video_format_get_pixel_stride (format, 0);
u_stride = gst_video_format_get_pixel_stride (format, 1);
v_stride = gst_video_format_get_pixel_stride (format, 2);
bpp = y_stride;
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = (y & ~1);
u = (s[(sh - 1 - x) * src_stride + even_y * bpp + u_offset] +
s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + u_offset]) / 2;
v = (s[(sh - 1 - x) * src_stride + even_y * bpp + v_offset] +
s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - x) * src_stride + y * bpp + y_offset];
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - (x + 1)) * src_stride + y * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_90L:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = ((sw - 1 - y) & ~1);
u = (s[x * src_stride + even_y * bpp + u_offset] +
s[(x + 1) * src_stride + even_y * bpp + u_offset]) / 2;
v = (s[x * src_stride + even_y * bpp + v_offset] +
s[(x + 1) * src_stride + even_y * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[x * src_stride + (sw - 1 - y) * bpp + y_offset];
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(x + 1) * src_stride + (sw - 1 - y) * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_180:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_x = ((sw - 1 - x) & ~1);
u = (s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset]) / 2;
v = (s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + (sw - 1 - x) * bpp + y_offset];
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + (sw - 1 - (x + 1)) * bpp +
y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_HORIZ:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_x = ((sw - 1 - x) & ~1);
u = (s[y * src_stride + even_x * bpp + u_offset] +
s[y * src_stride + even_x * bpp + u_offset]) / 2;
v = (s[y * src_stride + even_x * bpp + v_offset] +
s[y * src_stride + even_x * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[y * src_stride + (sw - 1 - x) * bpp + y_offset];
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[y * src_stride + (sw - 1 - (x + 1)) * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_VERT:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_x = (x & ~1);
u = (s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset]) / 2;
v = (s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + x * bpp + y_offset];
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + (x + 1) * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = (y & ~1);
u = (s[x * src_stride + even_y * bpp + u_offset] +
s[(x + 1) * src_stride + even_y * bpp + u_offset]) / 2;
v = (s[x * src_stride + even_y * bpp + v_offset] +
s[(x + 1) * src_stride + even_y * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[x * src_stride + y * bpp + y_offset];
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(x + 1) * src_stride + y * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_OTHER:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = ((sw - 1 - y) & ~1);
u = (s[(sh - 1 - x) * src_stride + even_y * bpp + u_offset] +
s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + u_offset]) / 2;
v = (s[(sh - 1 - x) * src_stride + even_y * bpp + v_offset] +
s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - x) * src_stride + (sw - 1 - y) * bpp + y_offset];
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - (x + 1)) * src_stride + (sw - 1 - y) * bpp +
y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
g_assert_not_reached ();
break;
default:
g_assert_not_reached ();
break;
}
}
static gboolean
gst_video_flip_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
GstCaps * outcaps)
@ -624,6 +829,11 @@ gst_video_flip_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
case GST_VIDEO_FORMAT_Y444:
vf->process = gst_video_flip_planar_yuv;
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_YVYU:
vf->process = gst_video_flip_y422;
break;
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR: