mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-18 22:36:33 +00:00
Code Issues 1 Projects Releases Wiki Activity

videoflip: Make processing more general and use libgstvideo for all format specific things

Browse source
This commit is contained in:
Sebastian Dröge 2010-04-18 14:29:30 +02:00
parent 754690dad6
commit e8ca390be8
2 changed files with 290 additions and 219 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

506
gst/videofilter/gstvideoflip.c
View file

@ -1,6 +1,7 @@
/* GStreamer
* 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>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -108,61 +109,6 @@ gst_video_flip_method_get_type (void)
GST_BOILERPLATE (GstVideoFlip, gst_video_flip, GstVideoFilter,
GST_TYPE_VIDEO_FILTER);
static gboolean
gst_video_flip_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
GstCaps * outcaps)
{
GstVideoFlip *vf = GST_VIDEO_FLIP (btrans);
GstStructure *in_s, *out_s;
gboolean ret = FALSE;
in_s = gst_caps_get_structure (incaps, 0);
out_s = gst_caps_get_structure (outcaps, 0);
if (gst_structure_get_int (in_s, "width", &vf->from_width) &&
gst_structure_get_int (in_s, "height", &vf->from_height) &&
gst_structure_get_int (out_s, "width", &vf->to_width) &&
gst_structure_get_int (out_s, "height", &vf->to_height)) {
/* Check that they are correct */
switch (vf->method) {
case GST_VIDEO_FLIP_METHOD_90R:
case GST_VIDEO_FLIP_METHOD_90L:
case GST_VIDEO_FLIP_METHOD_TRANS:
case GST_VIDEO_FLIP_METHOD_OTHER:
if ((vf->from_width != vf->to_height) ||
(vf->from_height != vf->to_width)) {
GST_DEBUG_OBJECT (vf, "we are inverting width and height but caps "
"are not correct : %dx%d to %dx%d", vf->from_width,
vf->from_height, vf->to_width, vf->to_height);
goto beach;
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
break;
case GST_VIDEO_FLIP_METHOD_180:
case GST_VIDEO_FLIP_METHOD_HORIZ:
case GST_VIDEO_FLIP_METHOD_VERT:
if ((vf->from_width != vf->to_width) ||
(vf->from_height != vf->to_height)) {
GST_DEBUG_OBJECT (vf, "we are keeping width and height but caps "
"are not correct : %dx%d to %dx%d", vf->from_width,
vf->from_height, vf->to_width, vf->to_height);
goto beach;
}
break;
default:
g_assert_not_reached ();
break;
}
}
ret = TRUE;
beach:
return ret;
}
static GstCaps *
gst_video_flip_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps)
@ -207,265 +153,369 @@ gst_video_flip_transform_caps (GstBaseTransform * trans,
return ret;
}
/* Useful macros */
#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
#define GST_VIDEO_I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/2)
#define GST_VIDEO_I420_Y_OFFSET(w,h) (0)
#define GST_VIDEO_I420_U_OFFSET(w,h) (GST_VIDEO_I420_Y_OFFSET(w,h)+(GST_VIDEO_I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
#define GST_VIDEO_I420_V_OFFSET(w,h) (GST_VIDEO_I420_U_OFFSET(w,h)+(GST_VIDEO_I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
#define GST_VIDEO_I420_SIZE(w,h) (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
static gboolean
gst_video_flip_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
guint * size)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (btrans);
GstStructure *structure;
gboolean ret = FALSE;
GstVideoFormat format;
gint width, height;
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_get_int (structure, "width", &width) &&
gst_structure_get_int (structure, "height", &height)) {
*size = GST_VIDEO_I420_SIZE (width, height);
ret = TRUE;
GST_DEBUG_OBJECT (videoflip, "our frame size is %d bytes (%dx%d)", *size,
width, height);
}
if (!gst_video_format_parse_caps (caps, &format, &width, &height))
return FALSE;
return ret;
*size = gst_video_format_get_size (format, width, height);
GST_DEBUG_OBJECT (videoflip, "our frame size is %d bytes (%dx%d)", *size,
width, height);
return TRUE;
}
static GstFlowReturn
gst_video_flip_flip (GstVideoFlip * videoflip, guint8 * dest,
const guint8 * src, int sw, int sh, int dw, int dh)
static void
gst_video_flip_planar_yuv (GstVideoFlip * videoflip, guint8 * dest,
const guint8 * src)
{
GstFlowReturn ret = GST_FLOW_OK;
int x, y;
guint8 const *s = src;
guint8 *d = dest;
gint x, y;
guint8 const *s;
guint8 *d;
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_y_stride, src_u_stride, src_v_stride;
gint src_y_offset, src_u_offset, src_v_offset;
gint src_y_height, src_u_height, src_v_height;
gint src_y_width, src_u_width, src_v_width;
gint dest_y_stride, dest_u_stride, dest_v_stride;
gint dest_y_offset, dest_u_offset, dest_v_offset;
gint dest_y_height, dest_u_height, dest_v_height;
gint dest_y_width, dest_u_width, dest_v_width;
src_y_stride = gst_video_format_get_row_stride (format, 0, sw);
src_u_stride = gst_video_format_get_row_stride (format, 1, sw);
src_v_stride = gst_video_format_get_row_stride (format, 2, sw);
dest_y_stride = gst_video_format_get_row_stride (format, 0, dw);
dest_u_stride = gst_video_format_get_row_stride (format, 1, dw);
dest_v_stride = gst_video_format_get_row_stride (format, 2, dw);
src_y_offset = gst_video_format_get_component_offset (format, 0, sw, sh);
src_u_offset = gst_video_format_get_component_offset (format, 1, sw, sh);
src_v_offset = gst_video_format_get_component_offset (format, 2, sw, sh);
dest_y_offset = gst_video_format_get_component_offset (format, 0, dw, dh);
dest_u_offset = gst_video_format_get_component_offset (format, 1, dw, dh);
dest_v_offset = gst_video_format_get_component_offset (format, 2, dw, dh);
src_y_width = gst_video_format_get_component_width (format, 0, sw);
src_u_width = gst_video_format_get_component_width (format, 1, sw);
src_v_width = gst_video_format_get_component_width (format, 2, sw);
dest_y_width = gst_video_format_get_component_width (format, 0, dw);
dest_u_width = gst_video_format_get_component_width (format, 1, dw);
dest_v_width = gst_video_format_get_component_width (format, 2, dw);
src_y_height = gst_video_format_get_component_height (format, 0, sh);
src_u_height = gst_video_format_get_component_height (format, 1, sh);
src_v_height = gst_video_format_get_component_height (format, 2, sh);
dest_y_height = gst_video_format_get_component_height (format, 0, dh);
dest_u_height = gst_video_format_get_component_height (format, 1, dh);
dest_v_height = gst_video_format_get_component_height (format, 2, dh);
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
/* Flip Y */
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
d[y * GST_VIDEO_I420_Y_ROWSTRIDE (dw) + x] =
s[(sh - 1 - x) * GST_VIDEO_I420_Y_ROWSTRIDE (sw) + y];
s = src + src_y_offset;
d = dest + dest_y_offset;
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - x) * src_y_stride + y];
}
}
/* Flip U */
s = src + GST_VIDEO_I420_U_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_U_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_U_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - x) * GST_VIDEO_I420_U_ROWSTRIDE (sw) + y];
s = src + src_u_offset;
d = dest + dest_u_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - x) * src_u_stride + y];
}
}
/* Flip V */
s = src + GST_VIDEO_I420_V_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_V_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_V_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - x) * GST_VIDEO_I420_V_ROWSTRIDE (sw) + y];
s = src + src_v_offset;
d = dest + dest_v_offset;
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - x) * src_v_stride + y];
}
}
break;
case GST_VIDEO_FLIP_METHOD_90L:
/* Flip Y */
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
d[y * GST_VIDEO_I420_Y_ROWSTRIDE (dw) + x] =
s[x * GST_VIDEO_I420_Y_ROWSTRIDE (sw) + (sw - 1 - y)];
s = src + src_y_offset;
d = dest + dest_y_offset;
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[x * src_y_stride + (src_y_width - 1 - y)];
}
}
/* Flip U */
s = src + GST_VIDEO_I420_U_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_U_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_U_ROWSTRIDE (dw) + x] =
s[x * GST_VIDEO_I420_U_ROWSTRIDE (sw) + (sw / 2 - 1 - y)];
s = src + src_u_offset;
d = dest + dest_u_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[x * src_u_stride + (src_u_width - 1 - y)];
}
}
/* Flip V */
s = src + GST_VIDEO_I420_V_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_V_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_V_ROWSTRIDE (dw) + x] =
s[x * GST_VIDEO_I420_V_ROWSTRIDE (sw) + (sw / 2 - 1 - y)];
s = src + src_v_offset;
d = dest + dest_v_offset;
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[x * src_v_stride + (src_v_width - 1 - y)];
}
}
break;
case GST_VIDEO_FLIP_METHOD_180:
/* Flip Y */
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
d[y * GST_VIDEO_I420_Y_ROWSTRIDE (dw) + x] =
s[(sh - 1 - y) * GST_VIDEO_I420_Y_ROWSTRIDE (sw) + (sw - 1 - x)];
s = src + src_y_offset;
d = dest + dest_y_offset;
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - y) * src_y_stride + (src_y_width - 1 - x)];
}
}
/* Flip U */
s = src + GST_VIDEO_I420_U_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_U_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_U_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - y) * GST_VIDEO_I420_U_ROWSTRIDE (sw) + (sw / 2 -
1 - x)];
s = src + src_u_offset;
d = dest + dest_u_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - y) * src_u_stride + (src_u_width - 1 - x)];
}
}
/* Flip V */
s = src + GST_VIDEO_I420_V_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_V_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_V_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - y) * GST_VIDEO_I420_V_ROWSTRIDE (sw) + (sw / 2 -
1 - x)];
s = src + src_v_offset;
d = dest + dest_v_offset;
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - y) * src_v_stride + (src_v_width - 1 - x)];
}
}
break;
case GST_VIDEO_FLIP_METHOD_HORIZ:
/* Flip Y */
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
d[y * GST_VIDEO_I420_Y_ROWSTRIDE (dw) + x] =
s[y * GST_VIDEO_I420_Y_ROWSTRIDE (sw) + (sw - 1 - x)];
s = src + src_y_offset;
d = dest + dest_y_offset;
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[y * src_y_stride + (src_y_width - 1 - x)];
}
}
/* Flip U */
s = src + GST_VIDEO_I420_U_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_U_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_U_ROWSTRIDE (dw) + x] =
s[y * GST_VIDEO_I420_U_ROWSTRIDE (sw) + (sw / 2 - 1 - x)];
s = src + src_u_offset;
d = dest + dest_u_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[y * src_u_stride + (src_u_width - 1 - x)];
}
}
/* Flip V */
s = src + GST_VIDEO_I420_V_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_V_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_V_ROWSTRIDE (dw) + x] =
s[y * GST_VIDEO_I420_V_ROWSTRIDE (sw) + (sw / 2 - 1 - x)];
s = src + src_v_offset;
d = dest + dest_v_offset;
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[y * src_v_stride + (src_v_width - 1 - x)];
}
}
break;
case GST_VIDEO_FLIP_METHOD_VERT:
/* Flip Y */
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
d[y * GST_VIDEO_I420_Y_ROWSTRIDE (dw) + x] =
s[(sh - 1 - y) * GST_VIDEO_I420_Y_ROWSTRIDE (sw) + x];
s = src + src_y_offset;
d = dest + dest_y_offset;
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - y) * src_y_stride + x];
}
}
/* Flip U */
s = src + GST_VIDEO_I420_U_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_U_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_U_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - y) * GST_VIDEO_I420_U_ROWSTRIDE (sw) + x];
s = src + src_u_offset;
d = dest + dest_u_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - y) * src_u_stride + x];
}
}
/* Flip V */
s = src + GST_VIDEO_I420_V_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_V_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_V_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - y) * GST_VIDEO_I420_V_ROWSTRIDE (sw) + x];
s = src + src_v_offset;
d = dest + dest_v_offset;
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - y) * src_v_stride + x];
}
}
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
/* Flip Y */
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
d[y * GST_VIDEO_I420_Y_ROWSTRIDE (dw) + x] =
s[x * GST_VIDEO_I420_Y_ROWSTRIDE (sw) + y];
s = src + src_y_offset;
d = dest + dest_y_offset;
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] = s[x * src_y_stride + y];
}
}
/* Flip U */
s = src + GST_VIDEO_I420_U_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_U_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_U_ROWSTRIDE (dw) + x] =
s[x * GST_VIDEO_I420_U_ROWSTRIDE (sw) + y];
s = src + src_u_offset;
d = dest + dest_u_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] = s[x * src_u_stride + y];
}
}
/* Flip V */
s = src + GST_VIDEO_I420_V_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_V_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_V_ROWSTRIDE (dw) + x] =
s[x * GST_VIDEO_I420_V_ROWSTRIDE (sw) + y];
s = src + src_v_offset;
d = dest + dest_v_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_v_stride + x] = s[x * src_v_stride + y];
}
}
break;
case GST_VIDEO_FLIP_METHOD_OTHER:
/* Flip Y */
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
d[y * GST_VIDEO_I420_Y_ROWSTRIDE (dw) + x] =
s[(sh - 1 - x) * GST_VIDEO_I420_Y_ROWSTRIDE (sw) + (sw - 1 - y)];
s = src + src_y_offset;
d = dest + dest_y_offset;
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - x) * src_y_stride + (src_y_width - 1 - y)];
}
}
/* Flip U */
s = src + GST_VIDEO_I420_U_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_U_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_U_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - x) * GST_VIDEO_I420_U_ROWSTRIDE (sw) + (sw / 2 -
1 - y)];
s = src + src_u_offset;
d = dest + dest_u_offset;
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - x) * src_u_stride + (src_u_width - 1 - y)];
}
}
/* Flip V */
s = src + GST_VIDEO_I420_V_OFFSET (sw, sh);
d = dest + GST_VIDEO_I420_V_OFFSET (dw, dh);
for (y = 0; y < dh / 2; y++) {
for (x = 0; x < dw / 2; x++) {
d[y * GST_VIDEO_I420_V_ROWSTRIDE (dw) + x] =
s[(sh / 2 - 1 - x) * GST_VIDEO_I420_V_ROWSTRIDE (sw) + (sw / 2 -
1 - y)];
s = src + src_v_offset;
d = dest + dest_v_offset;
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - x) * src_v_stride + (src_v_width - 1 - y)];
}
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
memcpy (d, s, GST_VIDEO_I420_SIZE (dw, dh));
g_assert_not_reached ();
break;
default:
ret = GST_FLOW_ERROR;
g_assert_not_reached ();
break;
}
}
static gboolean
gst_video_flip_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
GstCaps * outcaps)
{
GstVideoFlip *vf = GST_VIDEO_FLIP (btrans);
GstVideoFormat in_format, out_format;
gboolean ret = FALSE;
vf->process = NULL;
if (!gst_video_format_parse_caps (incaps, &in_format, &vf->from_width,
&vf->from_height)
|| !gst_video_format_parse_caps (outcaps, &out_format, &vf->to_width,
&vf->to_height))
goto invalid_caps;
if (in_format != out_format)
goto invalid_caps;
vf->format = in_format;
/* Check that they are correct */
switch (vf->method) {
case GST_VIDEO_FLIP_METHOD_90R:
case GST_VIDEO_FLIP_METHOD_90L:
case GST_VIDEO_FLIP_METHOD_TRANS:
case GST_VIDEO_FLIP_METHOD_OTHER:
if ((vf->from_width != vf->to_height) ||
(vf->from_height != vf->to_width)) {
GST_ERROR_OBJECT (vf, "we are inverting width and height but caps "
"are not correct : %dx%d to %dx%d", vf->from_width,
vf->from_height, vf->to_width, vf->to_height);
goto beach;
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
break;
case GST_VIDEO_FLIP_METHOD_180:
case GST_VIDEO_FLIP_METHOD_HORIZ:
case GST_VIDEO_FLIP_METHOD_VERT:
if ((vf->from_width != vf->to_width) ||
(vf->from_height != vf->to_height)) {
GST_ERROR_OBJECT (vf, "we are keeping width and height but caps "
"are not correct : %dx%d to %dx%d", vf->from_width,
vf->from_height, vf->to_width, vf->to_height);
goto beach;
}
break;
default:
g_assert_not_reached ();
break;
}
return ret;
ret = TRUE;
switch (vf->format) {
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
vf->process = gst_video_flip_planar_yuv;
break;
default:
break;
}
beach:
return ret && (vf->process != NULL);
invalid_caps:
GST_ERROR_OBJECT (vf, "Invalid caps: %" GST_PTR_FORMAT " -> %" GST_PTR_FORMAT,
incaps, outcaps);
return FALSE;
}
static GstFlowReturn
gst_video_flip_transform (GstBaseTransform * trans, GstBuffer * in,
GstBuffer * out)
static void
gst_video_flip_before_transform (GstBaseTransform * trans, GstBuffer * in)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans);
gpointer dest;
gconstpointer src;
int sw, sh, dw, dh;
GstFlowReturn ret = GST_FLOW_OK;
GstClockTime timestamp, stream_time;
timestamp = GST_BUFFER_TIMESTAMP (out);
timestamp = GST_BUFFER_TIMESTAMP (in);
stream_time =
gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);
@ -474,20 +524,33 @@ gst_video_flip_transform (GstBaseTransform * trans, GstBuffer * in,
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (G_OBJECT (videoflip), stream_time);
}
static GstFlowReturn
gst_video_flip_transform (GstBaseTransform * trans, GstBuffer * in,
GstBuffer * out)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans);
guint8 *dest;
const guint8 *src;
if (G_UNLIKELY (videoflip->process == NULL))
goto not_negotiated;
src = GST_BUFFER_DATA (in);
dest = GST_BUFFER_DATA (out);
sw = videoflip->from_width;
sh = videoflip->from_height;
dw = videoflip->to_width;
dh = videoflip->to_height;
GST_LOG_OBJECT (videoflip, "videoflip: flipping %dx%d to %dx%d (%s)",
sw, sh, dw, dh, video_flip_methods[videoflip->method].value_nick);
videoflip->from_width, videoflip->from_height, videoflip->to_width,
videoflip->to_height, video_flip_methods[videoflip->method].value_nick);
ret = gst_video_flip_flip (videoflip, dest, src, sw, sh, dw, dh);
videoflip->process (videoflip, dest, src);
return ret;
return GST_FLOW_OK;
not_negotiated:
GST_ERROR_OBJECT (videoflip, "Not negotiated yet");
return GST_FLOW_NOT_NEGOTIATED;
}
static gboolean
@ -542,7 +605,7 @@ gst_video_flip_src_event (GstBaseTransform * trans, GstEvent * event)
new_y = y;
break;
}
GST_DEBUG_OBJECT (vf, "to %fx%f", x, y);
GST_DEBUG_OBJECT (vf, "to %fx%f", new_x, new_y);
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, new_x,
"pointer_y", G_TYPE_DOUBLE, new_y, NULL);
}
@ -569,6 +632,9 @@ gst_video_flip_set_property (GObject * object, guint prop_id,
if (method != videoflip->method) {
GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
gst_base_transform_set_passthrough (btrans,
method == GST_VIDEO_FLIP_METHOD_IDENTITY);
GST_DEBUG_OBJECT (videoflip, "Changing method from %s to %s",
video_flip_methods[videoflip->method].value_nick,
video_flip_methods[method].value_nick);
@ -636,6 +702,8 @@ gst_video_flip_class_init (GstVideoFlipClass * klass)
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_video_flip_set_caps);
trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_video_flip_get_unit_size);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_video_flip_transform);
trans_class->before_transform =
GST_DEBUG_FUNCPTR (gst_video_flip_before_transform);
trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_flip_src_event);
}

3
gst/videofilter/gstvideoflip.h
View file

@ -21,6 +21,7 @@
#define __GST_VIDEO_FLIP_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideofilter.h>
G_BEGIN_DECLS
@ -72,10 +73,12 @@ struct _GstVideoFlip {
GstVideoFilter videofilter;
/* < private > */
GstVideoFormat format;
gint from_width, from_height;
gint to_width, to_height;
GstVideoFlipMethod method;
void (*process) (GstVideoFlip *videoflip, guint8 *dest, const guint8 *src);
};
struct _GstVideoFlipClass {