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videoflip: Add automatic flip mode driven by image-orientation tag

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=709312
This commit is contained in:
Nicolas Dufresne 2013-10-03 16:39:26 -04:00
parent 94f3d6fc07
commit ed77b22f2b
2 changed files with 101 additions and 33 deletions
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128
gst/videofilter/gstvideoflip.c
View file

@ -97,6 +97,8 @@ static const GEnumValue video_flip_methods[] = {
"Flip across upper left/lower right diagonal", "upper-left-diagonal"}, "Flip across upper left/lower right diagonal", "upper-left-diagonal"},
{GST_VIDEO_FLIP_METHOD_OTHER, {GST_VIDEO_FLIP_METHOD_OTHER,
"Flip across upper right/lower left diagonal", "upper-right-diagonal"}, "Flip across upper right/lower left diagonal", "upper-right-diagonal"},
{GST_VIDEO_FLIP_METHOD_AUTO,
"Select flip method based on image-orientation tag", "automatic"},
{0, NULL, NULL}, {0, NULL, NULL},
}; };
@ -132,7 +134,7 @@ gst_video_flip_transform_caps (GstBaseTransform * trans,
if (gst_structure_get_int (structure, "width", &width) && if (gst_structure_get_int (structure, "width", &width) &&
gst_structure_get_int (structure, "height", &height)) { gst_structure_get_int (structure, "height", &height)) {
switch (videoflip->method) { switch (videoflip->active_method) {
case GST_VIDEO_FLIP_METHOD_90R: case GST_VIDEO_FLIP_METHOD_90R:
case GST_VIDEO_FLIP_METHOD_90L: case GST_VIDEO_FLIP_METHOD_90L:
case GST_VIDEO_FLIP_METHOD_TRANS: case GST_VIDEO_FLIP_METHOD_TRANS:
@ -220,7 +222,7 @@ gst_video_flip_planar_yuv (GstVideoFlip * videoflip, GstVideoFrame * dest,
dest_u_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1); dest_u_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1);
dest_v_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 2); dest_v_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 2);
switch (videoflip->method) { switch (videoflip->active_method) {
case GST_VIDEO_FLIP_METHOD_90R: case GST_VIDEO_FLIP_METHOD_90R:
/* Flip Y */ /* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0); s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
@ -464,7 +466,7 @@ gst_video_flip_semi_planar_yuv (GstVideoFlip * videoflip, GstVideoFrame * dest,
dest_y_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 0); dest_y_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 0);
dest_uv_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1); dest_uv_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1);
switch (videoflip->method) { switch (videoflip->active_method) {
case GST_VIDEO_FLIP_METHOD_90R: case GST_VIDEO_FLIP_METHOD_90R:
/* Flip Y */ /* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0); s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
@ -650,7 +652,7 @@ gst_video_flip_packed_simple (GstVideoFlip * videoflip, GstVideoFrame * dest,
/* This is only true for non-subsampled formats! */ /* This is only true for non-subsampled formats! */
bpp = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0); bpp = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0);
switch (videoflip->method) { switch (videoflip->active_method) {
case GST_VIDEO_FLIP_METHOD_90R: case GST_VIDEO_FLIP_METHOD_90R:
for (y = 0; y < dh; y++) { for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) { for (x = 0; x < dw; x++) {
@ -760,7 +762,7 @@ gst_video_flip_y422 (GstVideoFlip * videoflip, GstVideoFrame * dest,
y_stride = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0); y_stride = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0);
bpp = y_stride; bpp = y_stride;
switch (videoflip->method) { switch (videoflip->active_method) {
case GST_VIDEO_FLIP_METHOD_90R: case GST_VIDEO_FLIP_METHOD_90R:
for (y = 0; y < dh; y++) { for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) { for (x = 0; x < dw; x += 2) {
@ -959,7 +961,7 @@ gst_video_flip_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
goto invalid_caps; goto invalid_caps;
/* Check that they are correct */ /* Check that they are correct */
switch (vf->method) { switch (vf->active_method) {
case GST_VIDEO_FLIP_METHOD_90R: case GST_VIDEO_FLIP_METHOD_90R:
case GST_VIDEO_FLIP_METHOD_90L: case GST_VIDEO_FLIP_METHOD_90L:
case GST_VIDEO_FLIP_METHOD_TRANS: case GST_VIDEO_FLIP_METHOD_TRANS:
@ -1037,6 +1039,43 @@ invalid_caps:
return FALSE; return FALSE;
} }
static void
gst_video_flip_set_method (GstVideoFlip * videoflip, GstVideoFlipMethod method,
gboolean from_tag)
{
GST_OBJECT_LOCK (videoflip);
/* Store updated method */
if (from_tag)
videoflip->tag_method = method;
else
videoflip->method = method;
/* Get the new method */
if (videoflip->method == GST_VIDEO_FLIP_METHOD_AUTO)
method = videoflip->tag_method;
else
method = videoflip->method;
if (method != videoflip->active_method) {
GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
GST_DEBUG_OBJECT (videoflip, "Changing method from %s to %s",
video_flip_methods[videoflip->active_method].value_nick,
video_flip_methods[method].value_nick);
videoflip->active_method = method;
GST_OBJECT_UNLOCK (videoflip);
gst_base_transform_set_passthrough (btrans,
method == GST_VIDEO_FLIP_METHOD_IDENTITY);
gst_base_transform_reconfigure_src (btrans);
} else {
GST_OBJECT_UNLOCK (videoflip);
}
}
static void static void
gst_video_flip_before_transform (GstBaseTransform * trans, GstBuffer * in) gst_video_flip_before_transform (GstBaseTransform * trans, GstBuffer * in)
{ {
@ -1064,7 +1103,7 @@ gst_video_flip_transform_frame (GstVideoFilter * vfilter,
goto not_negotiated; goto not_negotiated;
GST_LOG_OBJECT (videoflip, "videoflip: flipping (%s)", GST_LOG_OBJECT (videoflip, "videoflip: flipping (%s)",
video_flip_methods[videoflip->method].value_nick); video_flip_methods[videoflip->active_method].value_nick);
GST_OBJECT_LOCK (videoflip); GST_OBJECT_LOCK (videoflip);
videoflip->process (videoflip, out_frame, in_frame); videoflip->process (videoflip, out_frame, in_frame);
@ -1099,7 +1138,7 @@ gst_video_flip_src_event (GstBaseTransform * trans, GstEvent * event)
if (gst_structure_get_double (structure, "pointer_x", &x) && if (gst_structure_get_double (structure, "pointer_x", &x) &&
gst_structure_get_double (structure, "pointer_y", &y)) { gst_structure_get_double (structure, "pointer_y", &y)) {
GST_DEBUG_OBJECT (vf, "converting %fx%f", x, y); GST_DEBUG_OBJECT (vf, "converting %fx%f", x, y);
switch (vf->method) { switch (vf->active_method) {
case GST_VIDEO_FLIP_METHOD_90R: case GST_VIDEO_FLIP_METHOD_90R:
new_x = y; new_x = y;
new_y = out_info->width - x; new_y = out_info->width - x;
@ -1147,6 +1186,50 @@ gst_video_flip_src_event (GstBaseTransform * trans, GstEvent * event)
return ret; return ret;
} }
static gboolean
gst_video_flip_sink_event (GstBaseTransform * trans, GstEvent * event)
{
GstVideoFlip *vf = GST_VIDEO_FLIP (trans);
GstTagList *taglist;
gchar *orientation;
gboolean ret;
GST_DEBUG_OBJECT (vf, "handling %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:
gst_event_parse_tag (event, &taglist);
if (gst_tag_list_get_string (taglist, "image-orientation", &orientation)) {
if (!g_strcmp0 ("rotate-0", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_IDENTITY, TRUE);
else if (!g_strcmp0 ("rotate-90", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_90R, TRUE);
else if (!g_strcmp0 ("rotate-180", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_180, TRUE);
else if (!g_strcmp0 ("rotate-270", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_90L, TRUE);
else if (!g_strcmp0 ("flip-rotate-0", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_HORIZ, TRUE);
else if (!g_strcmp0 ("flip-rotate-90", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_TRANS, TRUE);
else if (!g_strcmp0 ("flip-rotate-180", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_VERT, TRUE);
else if (!g_strcmp0 ("flip-rotate-270", orientation))
gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_OTHER, TRUE);
}
g_free (orientation);
break;
default:
break;
}
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans, event);
return ret;
}
static void static void
gst_video_flip_set_property (GObject * object, guint prop_id, gst_video_flip_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec) const GValue * value, GParamSpec * pspec)
@ -1155,28 +1238,7 @@ gst_video_flip_set_property (GObject * object, guint prop_id,
switch (prop_id) { switch (prop_id) {
case PROP_METHOD: case PROP_METHOD:
{ gst_video_flip_set_method (videoflip, g_value_get_enum (value), FALSE);
GstVideoFlipMethod method;
method = g_value_get_enum (value);
GST_OBJECT_LOCK (videoflip);
if (method != videoflip->method) {
GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
GST_DEBUG_OBJECT (videoflip, "Changing method from %s to %s",
video_flip_methods[videoflip->method].value_nick,
video_flip_methods[method].value_nick);
videoflip->method = method;
GST_OBJECT_UNLOCK (videoflip);
gst_base_transform_set_passthrough (btrans,
method == GST_VIDEO_FLIP_METHOD_IDENTITY);
gst_base_transform_reconfigure_src (btrans);
} else {
GST_OBJECT_UNLOCK (videoflip);
}
}
break; break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -1232,6 +1294,7 @@ gst_video_flip_class_init (GstVideoFlipClass * klass)
trans_class->before_transform = trans_class->before_transform =
GST_DEBUG_FUNCPTR (gst_video_flip_before_transform); GST_DEBUG_FUNCPTR (gst_video_flip_before_transform);
trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_flip_src_event); trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_flip_src_event);
trans_class->sink_event = GST_DEBUG_FUNCPTR (gst_video_flip_sink_event);
vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_flip_set_info); vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_flip_set_info);
vfilter_class->transform_frame = vfilter_class->transform_frame =
@ -1241,6 +1304,7 @@ gst_video_flip_class_init (GstVideoFlipClass * klass)
static void static void
gst_video_flip_init (GstVideoFlip * videoflip) gst_video_flip_init (GstVideoFlip * videoflip)
{ {
videoflip->method = PROP_METHOD_DEFAULT; /* AUTO is not valid for active method, this is just to ensure we setup the
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (videoflip), TRUE); * method in gst_video_flip_set_method() */
videoflip->active_method = GST_VIDEO_FLIP_METHOD_AUTO;
} }

6
gst/videofilter/gstvideoflip.h
View file

@ -36,6 +36,7 @@ G_BEGIN_DECLS
* @GST_VIDEO_FLIP_METHOD_VERT: Flip vertically * @GST_VIDEO_FLIP_METHOD_VERT: Flip vertically
* @GST_VIDEO_FLIP_METHOD_TRANS: Flip across upper left/lower right diagonal * @GST_VIDEO_FLIP_METHOD_TRANS: Flip across upper left/lower right diagonal
* @GST_VIDEO_FLIP_METHOD_OTHER: Flip across upper right/lower left diagonal * @GST_VIDEO_FLIP_METHOD_OTHER: Flip across upper right/lower left diagonal
* @GST_VIDEO_FLIP_METHOD_AUTO: Select flip method based on image-orientation tag
* *
* The different flip methods. * The different flip methods.
*/ */
@ -47,7 +48,8 @@ typedef enum {
GST_VIDEO_FLIP_METHOD_HORIZ, GST_VIDEO_FLIP_METHOD_HORIZ,
GST_VIDEO_FLIP_METHOD_VERT, GST_VIDEO_FLIP_METHOD_VERT,
GST_VIDEO_FLIP_METHOD_TRANS, GST_VIDEO_FLIP_METHOD_TRANS,
GST_VIDEO_FLIP_METHOD_OTHER GST_VIDEO_FLIP_METHOD_OTHER,
GST_VIDEO_FLIP_METHOD_AUTO
} GstVideoFlipMethod; } GstVideoFlipMethod;
#define GST_TYPE_VIDEO_FLIP \ #define GST_TYPE_VIDEO_FLIP \
@ -74,6 +76,8 @@ struct _GstVideoFlip {
/* < private > */ /* < private > */
GstVideoFlipMethod method; GstVideoFlipMethod method;
GstVideoFlipMethod tag_method;
GstVideoFlipMethod active_method;
void (*process) (GstVideoFlip *videoflip, GstVideoFrame *dest, const GstVideoFrame *src); void (*process) (GstVideoFlip *videoflip, GstVideoFrame *dest, const GstVideoFrame *src);
}; };