FaSTTUBe/GST-Tensordecoder-ov_ep
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videocrop: port to videofilter

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This commit is contained in:
Wim Taymans 2012-10-17 10:20:12 +02:00
parent 3ef7c8ab93
commit 5ec642d0c3
2 changed files with 118 additions and 207 deletions
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305
gst/videocrop/gstvideocrop.c
View File

@ -95,7 +95,7 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
); );
#define gst_video_crop_parent_class parent_class #define gst_video_crop_parent_class parent_class
G_DEFINE_TYPE (GstVideoCrop, gst_video_crop, GST_TYPE_BASE_TRANSFORM); G_DEFINE_TYPE (GstVideoCrop, gst_video_crop, GST_TYPE_VIDEO_FILTER);
static void gst_video_crop_finalize (GObject * object); static void gst_video_crop_finalize (GObject * object);
@ -106,15 +106,14 @@ static void gst_video_crop_get_property (GObject * object, guint prop_id,
static GstCaps *gst_video_crop_transform_caps (GstBaseTransform * trans, static GstCaps *gst_video_crop_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter_caps); GstPadDirection direction, GstCaps * caps, GstCaps * filter_caps);
static GstFlowReturn gst_video_crop_transform (GstBaseTransform * trans,
GstBuffer * inbuf, GstBuffer * outbuf);
static gboolean gst_video_crop_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, gsize * size);
static gboolean gst_video_crop_set_caps (GstBaseTransform * trans,
GstCaps * in_caps, GstCaps * outcaps);
static gboolean gst_video_crop_src_event (GstBaseTransform * trans, static gboolean gst_video_crop_src_event (GstBaseTransform * trans,
GstEvent * event); GstEvent * event);
static gboolean gst_video_crop_set_info (GstVideoFilter * vfilter, GstCaps * in,
GstVideoInfo * in_info, GstCaps * out, GstVideoInfo * out_info);
static GstFlowReturn gst_video_crop_transform_frame (GstVideoFilter * vfilter,
GstVideoFrame * in_frame, GstVideoFrame * out_frame);
static gboolean static gboolean
gst_video_crop_src_event (GstBaseTransform * trans, GstEvent * event) gst_video_crop_src_event (GstBaseTransform * trans, GstEvent * event)
{ {
@ -168,10 +167,12 @@ gst_video_crop_class_init (GstVideoCropClass * klass)
GObjectClass *gobject_class; GObjectClass *gobject_class;
GstElementClass *element_class; GstElementClass *element_class;
GstBaseTransformClass *basetransform_class; GstBaseTransformClass *basetransform_class;
GstVideoFilterClass *vfilter_class;
gobject_class = (GObjectClass *) klass; gobject_class = (GObjectClass *) klass;
element_class = (GstElementClass *) klass; element_class = (GstElementClass *) klass;
basetransform_class = (GstBaseTransformClass *) klass; basetransform_class = (GstBaseTransformClass *) klass;
vfilter_class = (GstVideoFilterClass *) klass;
gobject_class->finalize = gst_video_crop_finalize; gobject_class->finalize = gst_video_crop_finalize;
gobject_class->set_property = gst_video_crop_set_property; gobject_class->set_property = gst_video_crop_set_property;
@ -199,15 +200,13 @@ gst_video_crop_class_init (GstVideoCropClass * klass)
"Crops video into a user-defined region", "Crops video into a user-defined region",
"Tim-Philipp Müller <tim centricular net>"); "Tim-Philipp Müller <tim centricular net>");
basetransform_class->transform = GST_DEBUG_FUNCPTR (gst_video_crop_transform);
basetransform_class->transform_caps = basetransform_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_video_crop_transform_caps); GST_DEBUG_FUNCPTR (gst_video_crop_transform_caps);
basetransform_class->set_caps = GST_DEBUG_FUNCPTR (gst_video_crop_set_caps);
basetransform_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_video_crop_get_unit_size);
basetransform_class->passthrough_on_same_caps = FALSE;
basetransform_class->src_event = GST_DEBUG_FUNCPTR (gst_video_crop_src_event); basetransform_class->src_event = GST_DEBUG_FUNCPTR (gst_video_crop_src_event);
vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_crop_set_info);
vfilter_class->transform_frame =
GST_DEBUG_FUNCPTR (gst_video_crop_transform_frame);
} }
static void static void
@ -233,256 +232,159 @@ gst_video_crop_finalize (GObject * object)
G_OBJECT_CLASS (parent_class)->finalize (object); G_OBJECT_CLASS (parent_class)->finalize (object);
} }
static gboolean
gst_video_crop_get_image_details_from_caps (GstVideoCrop * vcrop,
GstVideoCropImageDetails * details, GstCaps * caps)
{
gst_video_info_init (&details->info);
if (!gst_video_info_from_caps (&details->info, caps)) {
goto incomplete_format;
}
if (details->info.width == 0 && details->info.height == 0) {
goto incomplete_format;
}
if (GST_VIDEO_INFO_IS_RGB (&details->info)
|| GST_VIDEO_INFO_IS_GRAY (&details->info)) {
details->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE;
} else {
switch (GST_VIDEO_INFO_FORMAT (&details->info)) {
case GST_VIDEO_FORMAT_AYUV:
details->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE;
break;
case GST_VIDEO_FORMAT_YVYU:
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
details->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_COMPLEX;
if (GST_VIDEO_INFO_FORMAT (&details->info) == GST_VIDEO_FORMAT_UYVY) {
/* UYVY = 4:2:2 - [U0 Y0 V0 Y1] [U2 Y2 V2 Y3] [U4 Y4 V4 Y5] */
details->macro_y_off = 1;
} else {
/* YUYV = 4:2:2 - [Y0 U0 Y1 V0] [Y2 U2 Y3 V2] [Y4 U4 Y5 V4] = YUY2 */
details->macro_y_off = 0;
}
break;
case GST_VIDEO_FORMAT_GRAY8:
details->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE;
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
details->packing = VIDEO_CROP_PIXEL_FORMAT_PLANAR;
break;
default:
goto unknown_format;
}
}
return TRUE;
/* ERRORS */
unknown_format:
{
GST_ELEMENT_ERROR (vcrop, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported format"));
return FALSE;
}
incomplete_format:
{
GST_ELEMENT_ERROR (vcrop, CORE, NEGOTIATION, (NULL),
("Incomplete caps, some required field is missing"));
return FALSE;
}
}
static gboolean
gst_video_crop_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
gsize * size)
{
GstVideoCropImageDetails img_details = { 0, };
GstVideoCrop *vcrop = GST_VIDEO_CROP (trans);
if (!gst_video_crop_get_image_details_from_caps (vcrop, &img_details, caps))
return FALSE;
*size = GST_VIDEO_INFO_SIZE (&img_details.info);
return TRUE;
}
#define ROUND_DOWN_2(n) ((n)&(~1)) #define ROUND_DOWN_2(n) ((n)&(~1))
static void static void
gst_video_crop_transform_packed_complex (GstVideoCrop * vcrop, gst_video_crop_transform_packed_complex (GstVideoCrop * vcrop,
GstBuffer * inbuf, GstBuffer * outbuf) GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{ {
GstMapInfo in_map, out_map;
guint8 *in_data, *out_data; guint8 *in_data, *out_data;
guint i, dx; guint i, dx;
gint width, height;
gint in_stride; gint in_stride;
gint out_stride; gint out_stride;
gst_buffer_map (inbuf, &in_map, GST_MAP_READ); width = GST_VIDEO_FRAME_WIDTH (out_frame);
gst_buffer_map (outbuf, &out_map, GST_MAP_WRITE); height = GST_VIDEO_FRAME_HEIGHT (out_frame);
in_data = in_map.data; in_data = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
out_data = out_map.data; out_data = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
in_stride = GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, 0); in_stride = GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0);
out_stride = GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->out.info, 0); out_stride = GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0);
in_data += vcrop->crop_top * in_stride; in_data += vcrop->crop_top * in_stride;
/* rounding down here so we end up at the start of a macro-pixel and not /* rounding down here so we end up at the start of a macro-pixel and not
* in the middle of one */ * in the middle of one */
in_data += in_data += ROUND_DOWN_2 (vcrop->crop_left) *
ROUND_DOWN_2 (vcrop->crop_left) * GST_VIDEO_FRAME_COMP_PSTRIDE (in_frame, 0);
GST_VIDEO_INFO_COMP_PSTRIDE (&vcrop->in.info, 0);
dx = GST_VIDEO_INFO_WIDTH (&vcrop->out.info) * dx = width * GST_VIDEO_FRAME_COMP_PSTRIDE (out_frame, 0);
GST_VIDEO_INFO_COMP_PSTRIDE (&vcrop->out.info, 0);
/* UYVY = 4:2:2 - [U0 Y0 V0 Y1] [U2 Y2 V2 Y3] [U4 Y4 V4 Y5] /* UYVY = 4:2:2 - [U0 Y0 V0 Y1] [U2 Y2 V2 Y3] [U4 Y4 V4 Y5]
* YUYV = 4:2:2 - [Y0 U0 Y1 V0] [Y2 U2 Y3 V2] [Y4 U4 Y5 V4] = YUY2 */ * YUYV = 4:2:2 - [Y0 U0 Y1 V0] [Y2 U2 Y3 V2] [Y4 U4 Y5 V4] = YUY2 */
if ((vcrop->crop_left % 2) != 0) { if ((vcrop->crop_left % 2) != 0) {
for (i = 0; i < GST_VIDEO_INFO_HEIGHT (&vcrop->out.info); ++i) { for (i = 0; i < height; ++i) {
gint j; gint j;
memcpy (out_data, in_data, dx); memcpy (out_data, in_data, dx);
/* move just the Y samples one pixel to the left, don't worry about /* move just the Y samples one pixel to the left, don't worry about
* chroma shift */ * chroma shift */
for (j = vcrop->in.macro_y_off; j < out_stride - 2; j += 2) for (j = vcrop->macro_y_off; j < out_stride - 2; j += 2)
out_data[j] = in_data[j + 2]; out_data[j] = in_data[j + 2];
in_data += in_stride; in_data += in_stride;
out_data += out_stride; out_data += out_stride;
} }
} else { } else {
for (i = 0; i < GST_VIDEO_INFO_HEIGHT (&vcrop->out.info); ++i) { for (i = 0; i < height; ++i) {
memcpy (out_data, in_data, dx); memcpy (out_data, in_data, dx);
in_data += in_stride; in_data += in_stride;
out_data += out_stride; out_data += out_stride;
} }
} }
gst_buffer_unmap (inbuf, &in_map);
gst_buffer_unmap (outbuf, &out_map);
} }
static void static void
gst_video_crop_transform_packed_simple (GstVideoCrop * vcrop, gst_video_crop_transform_packed_simple (GstVideoCrop * vcrop,
GstBuffer * inbuf, GstBuffer * outbuf) GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{ {
GstMapInfo in_map, out_map;
guint8 *in_data, *out_data; guint8 *in_data, *out_data;
gint width, height;
guint i, dx; guint i, dx;
gint in_stride, out_stride; gint in_stride, out_stride;
gst_buffer_map (inbuf, &in_map, GST_MAP_READ); width = GST_VIDEO_FRAME_WIDTH (out_frame);
gst_buffer_map (outbuf, &out_map, GST_MAP_WRITE); height = GST_VIDEO_FRAME_HEIGHT (out_frame);
in_data = in_map.data; in_data = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
out_data = out_map.data; out_data = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
in_stride = GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, 0); in_stride = GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0);
out_stride = GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->out.info, 0); out_stride = GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0);
in_data += vcrop->crop_top * in_stride; in_data += vcrop->crop_top * in_stride;
in_data += in_data += vcrop->crop_left * GST_VIDEO_FRAME_COMP_PSTRIDE (in_frame, 0);
vcrop->crop_left * GST_VIDEO_INFO_COMP_PSTRIDE (&vcrop->in.info, 0);
dx = GST_VIDEO_INFO_WIDTH (&vcrop->out.info) * dx = width * GST_VIDEO_FRAME_COMP_PSTRIDE (out_frame, 0);
GST_VIDEO_INFO_COMP_PSTRIDE (&vcrop->out.info, 0);
for (i = 0; i < GST_VIDEO_INFO_HEIGHT (&vcrop->out.info); ++i) { for (i = 0; i < height; ++i) {
memcpy (out_data, in_data, dx); memcpy (out_data, in_data, dx);
in_data += in_stride; in_data += in_stride;
out_data += out_stride; out_data += out_stride;
} }
gst_buffer_unmap (inbuf, &in_map);
gst_buffer_unmap (outbuf, &out_map);
} }
static void static void
gst_video_crop_transform_planar (GstVideoCrop * vcrop, GstBuffer * inbuf, gst_video_crop_transform_planar (GstVideoCrop * vcrop,
GstBuffer * outbuf) GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{ {
GstMapInfo in_map, out_map; gint width, height;
guint8 *y_out, *u_out, *v_out; guint8 *y_out, *u_out, *v_out;
guint8 *y_in, *u_in, *v_in; guint8 *y_in, *u_in, *v_in;
guint i, dx; guint i, dx;
gst_buffer_map (inbuf, &in_map, GST_MAP_READ); width = GST_VIDEO_FRAME_WIDTH (out_frame);
gst_buffer_map (outbuf, &out_map, GST_MAP_WRITE); height = GST_VIDEO_FRAME_HEIGHT (out_frame);
/* Y plane */ /* Y plane */
y_in = in_map.data; y_in = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
y_out = out_map.data; y_out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
y_in += y_in +=
(vcrop->crop_top * GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, (vcrop->crop_top * GST_VIDEO_FRAME_PLANE_STRIDE (in_frame,
0)) + vcrop->crop_left; 0)) + vcrop->crop_left;
dx = GST_VIDEO_INFO_WIDTH (&vcrop->out.info) * 1; dx = width;
for (i = 0; i < GST_VIDEO_INFO_HEIGHT (&vcrop->out.info); ++i) { for (i = 0; i < height; ++i) {
memcpy (y_out, y_in, dx); memcpy (y_out, y_in, dx);
y_in += GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, 0); y_in += GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0);
y_out += GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->out.info, 0); y_out += GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0);
} }
/* U + V planes */ /* U + V planes */
u_in = u_in = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 1);
(guint8 *) in_map.data + GST_VIDEO_INFO_PLANE_OFFSET (&vcrop->in.info, 1); u_out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 1);
u_out =
(guint8 *) out_map.data + GST_VIDEO_INFO_PLANE_OFFSET (&vcrop->out.info,
1);
u_in += u_in += (vcrop->crop_top / 2) * GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1);
(vcrop->crop_top / 2) * GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, 1);
u_in += vcrop->crop_left / 2; u_in += vcrop->crop_left / 2;
v_in = v_in = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 2);
(guint8 *) in_map.data + GST_VIDEO_INFO_PLANE_OFFSET (&vcrop->in.info, 2); v_out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 2);
v_out =
(guint8 *) out_map.data + GST_VIDEO_INFO_PLANE_OFFSET (&vcrop->out.info,
2);
v_in += v_in += (vcrop->crop_top / 2) * GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 2);
(vcrop->crop_top / 2) * GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, 2);
v_in += vcrop->crop_left / 2; v_in += vcrop->crop_left / 2;
dx = GST_ROUND_UP_2 (GST_VIDEO_INFO_WIDTH (&vcrop->out.info)) / 2; dx = GST_ROUND_UP_2 (width) / 2;
for (i = 0; i < GST_ROUND_UP_2 (GST_VIDEO_INFO_HEIGHT (&vcrop->out.info)) / 2; for (i = 0; i < GST_ROUND_UP_2 (height) / 2; ++i) {
++i) {
memcpy (u_out, u_in, dx); memcpy (u_out, u_in, dx);
memcpy (v_out, v_in, dx); memcpy (v_out, v_in, dx);
u_in += GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, 1); u_in += GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1);
u_out += GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->out.info, 1); u_out += GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 1);
v_in += GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->in.info, 2); v_in += GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 2);
v_out += GST_VIDEO_INFO_PLANE_STRIDE (&vcrop->out.info, 2); v_out += GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 2);
} }
gst_buffer_unmap (inbuf, &in_map);
gst_buffer_unmap (outbuf, &out_map);
} }
static GstFlowReturn static GstFlowReturn
gst_video_crop_transform (GstBaseTransform * trans, GstBuffer * inbuf, gst_video_crop_transform_frame (GstVideoFilter * vfilter,
GstBuffer * outbuf) GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{ {
GstVideoCrop *vcrop = GST_VIDEO_CROP (trans); GstVideoCrop *vcrop = GST_VIDEO_CROP (vfilter);
g_mutex_lock (&vcrop->lock); g_mutex_lock (&vcrop->lock);
switch (vcrop->in.packing) { switch (vcrop->packing) {
case VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE: case VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE:
gst_video_crop_transform_packed_simple (vcrop, inbuf, outbuf); gst_video_crop_transform_packed_simple (vcrop, in_frame, out_frame);
break; break;
case VIDEO_CROP_PIXEL_FORMAT_PACKED_COMPLEX: case VIDEO_CROP_PIXEL_FORMAT_PACKED_COMPLEX:
gst_video_crop_transform_packed_complex (vcrop, inbuf, outbuf); gst_video_crop_transform_packed_complex (vcrop, in_frame, out_frame);
break; break;
case VIDEO_CROP_PIXEL_FORMAT_PLANAR: case VIDEO_CROP_PIXEL_FORMAT_PLANAR:
gst_video_crop_transform_planar (vcrop, inbuf, outbuf); gst_video_crop_transform_planar (vcrop, in_frame, out_frame);
break; break;
default: default:
g_assert_not_reached (); g_assert_not_reached ();
@ -620,28 +522,22 @@ gst_video_crop_transform_caps (GstBaseTransform * trans,
} }
static gboolean static gboolean
gst_video_crop_set_caps (GstBaseTransform * trans, GstCaps * incaps, gst_video_crop_set_info (GstVideoFilter * vfilter, GstCaps * in,
GstCaps * outcaps) GstVideoInfo * in_info, GstCaps * out, GstVideoInfo * out_info)
{ {
GstVideoCrop *crop = GST_VIDEO_CROP (trans); GstVideoCrop *crop = GST_VIDEO_CROP (vfilter);
if (!gst_video_crop_get_image_details_from_caps (crop, &crop->in, incaps))
goto wrong_input;
if (!gst_video_crop_get_image_details_from_caps (crop, &crop->out, outcaps))
goto wrong_output;
if (G_UNLIKELY ((crop->crop_left + crop->crop_right) >= if (G_UNLIKELY ((crop->crop_left + crop->crop_right) >=
GST_VIDEO_INFO_WIDTH (&crop->in.info) GST_VIDEO_INFO_WIDTH (in_info)
|| (crop->crop_top + crop->crop_bottom) >= || (crop->crop_top + crop->crop_bottom) >=
GST_VIDEO_INFO_HEIGHT (&crop->in.info))) GST_VIDEO_INFO_HEIGHT (in_info)))
goto cropping_too_much; goto cropping_too_much;
GST_LOG_OBJECT (crop, "incaps = %" GST_PTR_FORMAT ", outcaps = %" GST_LOG_OBJECT (crop, "incaps = %" GST_PTR_FORMAT ", outcaps = %"
GST_PTR_FORMAT, incaps, outcaps); GST_PTR_FORMAT, in, out);
if ((crop->crop_left | crop->crop_right | crop-> if ((crop->crop_left | crop->crop_right | crop->crop_top | crop->
crop_top | crop->crop_bottom) == 0) { crop_bottom) == 0) {
GST_LOG_OBJECT (crop, "we are using passthrough"); GST_LOG_OBJECT (crop, "we are using passthrough");
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (crop), TRUE); gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (crop), TRUE);
} else { } else {
@ -649,26 +545,51 @@ gst_video_crop_set_caps (GstBaseTransform * trans, GstCaps * incaps,
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (crop), FALSE); gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (crop), FALSE);
} }
if (GST_VIDEO_INFO_IS_RGB (in_info)
|| GST_VIDEO_INFO_IS_GRAY (in_info)) {
crop->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE;
} else {
switch (GST_VIDEO_INFO_FORMAT (in_info)) {
case GST_VIDEO_FORMAT_AYUV:
crop->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE;
break;
case GST_VIDEO_FORMAT_YVYU:
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
crop->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_COMPLEX;
if (GST_VIDEO_INFO_FORMAT (in_info) == GST_VIDEO_FORMAT_UYVY) {
/* UYVY = 4:2:2 - [U0 Y0 V0 Y1] [U2 Y2 V2 Y3] [U4 Y4 V4 Y5] */
crop->macro_y_off = 1;
} else {
/* YUYV = 4:2:2 - [Y0 U0 Y1 V0] [Y2 U2 Y3 V2] [Y4 U4 Y5 V4] = YUY2 */
crop->macro_y_off = 0;
}
break;
case GST_VIDEO_FORMAT_GRAY8:
crop->packing = VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE;
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
crop->packing = VIDEO_CROP_PIXEL_FORMAT_PLANAR;
break;
default:
goto unknown_format;
}
}
return TRUE; return TRUE;
/* ERROR */ /* ERROR */
wrong_input:
{
GST_DEBUG_OBJECT (crop, "failed to parse input caps %" GST_PTR_FORMAT,
incaps);
return FALSE;
}
wrong_output:
{
GST_DEBUG_OBJECT (crop, "failed to parse output caps %" GST_PTR_FORMAT,
outcaps);
return FALSE;
}
cropping_too_much: cropping_too_much:
{ {
GST_DEBUG_OBJECT (crop, "we are cropping too much"); GST_DEBUG_OBJECT (crop, "we are cropping too much");
return FALSE; return FALSE;
} }
unknown_format:
{
GST_DEBUG_OBJECT (crop, "Unsupported format");
return FALSE;
}
} }
static void static void

20
gst/videocrop/gstvideocrop.h
View File

@ -20,7 +20,7 @@
#ifndef __GST_VIDEO_CROP_H__ #ifndef __GST_VIDEO_CROP_H__
#define __GST_VIDEO_CROP_H__ #define __GST_VIDEO_CROP_H__
#include <gst/base/gstbasetransform.h> #include <gst/video/gstvideofilter.h>
G_BEGIN_DECLS G_BEGIN_DECLS
@ -42,23 +42,13 @@ typedef enum {
} VideoCropPixelFormat; } VideoCropPixelFormat;
typedef struct _GstVideoCropImageDetails GstVideoCropImageDetails; typedef struct _GstVideoCropImageDetails GstVideoCropImageDetails;
struct _GstVideoCropImageDetails
{
/*< private >*/
VideoCropPixelFormat packing;
GstVideoInfo info;
/* for packed RGB and YUV */
guint8 macro_y_off; /* for YUY2, YVYU, UYVY, Y offset within macropixel in bytes */
};
typedef struct _GstVideoCrop GstVideoCrop; typedef struct _GstVideoCrop GstVideoCrop;
typedef struct _GstVideoCropClass GstVideoCropClass; typedef struct _GstVideoCropClass GstVideoCropClass;
struct _GstVideoCrop struct _GstVideoCrop
{ {
GstBaseTransform basetransform; GstVideoFilter parent;
/*< private >*/ /*< private >*/
gint crop_left; gint crop_left;
@ -66,15 +56,15 @@ struct _GstVideoCrop
gint crop_top; gint crop_top;
gint crop_bottom; gint crop_bottom;
GstVideoCropImageDetails in; /* details of input image */ VideoCropPixelFormat packing;
GstVideoCropImageDetails out; /* details of output image */ gint macro_y_off;
GMutex lock; GMutex lock;
}; };
struct _GstVideoCropClass struct _GstVideoCropClass
{ {
GstBaseTransformClass basetransform_class; GstVideoFilterClass parent_class;
}; };
GType gst_video_crop_get_type (void); GType gst_video_crop_get_type (void);