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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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videoflip: Add automatic flip mode driven by image-orientation tag
https://bugzilla.gnome.org/show_bug.cgi?id=709312
This commit is contained in:
Nicolas Dufresne
parent
94f3d6fc07
commit
ed77b22f2b
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@ -97,6 +97,8 @@ static const GEnumValue video_flip_methods[] = {
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"Flip across upper left/lower right diagonal", "upper-left-diagonal"},
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{GST_VIDEO_FLIP_METHOD_OTHER,
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"Flip across upper right/lower left diagonal", "upper-right-diagonal"},
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{GST_VIDEO_FLIP_METHOD_AUTO,
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"Select flip method based on image-orientation tag", "automatic"},
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{0, NULL, NULL},
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};
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@ -132,7 +134,7 @@ gst_video_flip_transform_caps (GstBaseTransform * trans,
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if (gst_structure_get_int (structure, "width", &width) &&
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gst_structure_get_int (structure, "height", &height)) {
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switch (videoflip->method) {
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switch (videoflip->active_method) {
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case GST_VIDEO_FLIP_METHOD_90R:
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case GST_VIDEO_FLIP_METHOD_90L:
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case GST_VIDEO_FLIP_METHOD_TRANS:
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@ -220,7 +222,7 @@ gst_video_flip_planar_yuv (GstVideoFlip * videoflip, GstVideoFrame * dest,
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dest_u_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1);
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dest_v_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 2);
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switch (videoflip->method) {
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switch (videoflip->active_method) {
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case GST_VIDEO_FLIP_METHOD_90R:
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/* Flip Y */
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s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
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@ -464,7 +466,7 @@ gst_video_flip_semi_planar_yuv (GstVideoFlip * videoflip, GstVideoFrame * dest,
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dest_y_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 0);
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dest_uv_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1);
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switch (videoflip->method) {
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switch (videoflip->active_method) {
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case GST_VIDEO_FLIP_METHOD_90R:
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/* Flip Y */
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s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
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@ -650,7 +652,7 @@ gst_video_flip_packed_simple (GstVideoFlip * videoflip, GstVideoFrame * dest,
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/* This is only true for non-subsampled formats! */
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bpp = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0);
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switch (videoflip->method) {
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switch (videoflip->active_method) {
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case GST_VIDEO_FLIP_METHOD_90R:
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for (y = 0; y < dh; y++) {
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for (x = 0; x < dw; x++) {
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@ -760,7 +762,7 @@ gst_video_flip_y422 (GstVideoFlip * videoflip, GstVideoFrame * dest,
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y_stride = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0);
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bpp = y_stride;
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switch (videoflip->method) {
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switch (videoflip->active_method) {
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case GST_VIDEO_FLIP_METHOD_90R:
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for (y = 0; y < dh; y++) {
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for (x = 0; x < dw; x += 2) {
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@ -959,7 +961,7 @@ gst_video_flip_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
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goto invalid_caps;
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/* Check that they are correct */
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switch (vf->method) {
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switch (vf->active_method) {
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case GST_VIDEO_FLIP_METHOD_90R:
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case GST_VIDEO_FLIP_METHOD_90L:
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case GST_VIDEO_FLIP_METHOD_TRANS:
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@ -1037,6 +1039,43 @@ invalid_caps:
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return FALSE;
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}
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static void
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gst_video_flip_set_method (GstVideoFlip * videoflip, GstVideoFlipMethod method,
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gboolean from_tag)
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{
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GST_OBJECT_LOCK (videoflip);
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/* Store updated method */
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if (from_tag)
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videoflip->tag_method = method;
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else
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videoflip->method = method;
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/* Get the new method */
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if (videoflip->method == GST_VIDEO_FLIP_METHOD_AUTO)
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method = videoflip->tag_method;
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else
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method = videoflip->method;
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if (method != videoflip->active_method) {
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GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
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GST_DEBUG_OBJECT (videoflip, "Changing method from %s to %s",
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video_flip_methods[videoflip->active_method].value_nick,
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video_flip_methods[method].value_nick);
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videoflip->active_method = method;
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GST_OBJECT_UNLOCK (videoflip);
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gst_base_transform_set_passthrough (btrans,
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method == GST_VIDEO_FLIP_METHOD_IDENTITY);
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gst_base_transform_reconfigure_src (btrans);
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} else {
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GST_OBJECT_UNLOCK (videoflip);
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}
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}
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static void
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gst_video_flip_before_transform (GstBaseTransform * trans, GstBuffer * in)
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{
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@ -1064,7 +1103,7 @@ gst_video_flip_transform_frame (GstVideoFilter * vfilter,
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goto not_negotiated;
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GST_LOG_OBJECT (videoflip, "videoflip: flipping (%s)",
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video_flip_methods[videoflip->method].value_nick);
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video_flip_methods[videoflip->active_method].value_nick);
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GST_OBJECT_LOCK (videoflip);
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videoflip->process (videoflip, out_frame, in_frame);
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@ -1099,7 +1138,7 @@ gst_video_flip_src_event (GstBaseTransform * trans, GstEvent * event)
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if (gst_structure_get_double (structure, "pointer_x", &x) &&
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gst_structure_get_double (structure, "pointer_y", &y)) {
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GST_DEBUG_OBJECT (vf, "converting %fx%f", x, y);
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switch (vf->method) {
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switch (vf->active_method) {
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case GST_VIDEO_FLIP_METHOD_90R:
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new_x = y;
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new_y = out_info->width - x;
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@ -1147,6 +1186,50 @@ gst_video_flip_src_event (GstBaseTransform * trans, GstEvent * event)
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return ret;
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}
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static gboolean
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gst_video_flip_sink_event (GstBaseTransform * trans, GstEvent * event)
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{
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GstVideoFlip *vf = GST_VIDEO_FLIP (trans);
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GstTagList *taglist;
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gchar *orientation;
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gboolean ret;
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GST_DEBUG_OBJECT (vf, "handling %s event", GST_EVENT_TYPE_NAME (event));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_TAG:
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gst_event_parse_tag (event, &taglist);
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if (gst_tag_list_get_string (taglist, "image-orientation", &orientation)) {
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if (!g_strcmp0 ("rotate-0", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_IDENTITY, TRUE);
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else if (!g_strcmp0 ("rotate-90", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_90R, TRUE);
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else if (!g_strcmp0 ("rotate-180", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_180, TRUE);
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else if (!g_strcmp0 ("rotate-270", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_90L, TRUE);
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else if (!g_strcmp0 ("flip-rotate-0", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_HORIZ, TRUE);
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else if (!g_strcmp0 ("flip-rotate-90", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_TRANS, TRUE);
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else if (!g_strcmp0 ("flip-rotate-180", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_VERT, TRUE);
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else if (!g_strcmp0 ("flip-rotate-270", orientation))
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gst_video_flip_set_method (vf, GST_VIDEO_FLIP_METHOD_OTHER, TRUE);
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}
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g_free (orientation);
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break;
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default:
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break;
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}
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ret = GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans, event);
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return ret;
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}
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static void
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gst_video_flip_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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@ -1155,28 +1238,7 @@ gst_video_flip_set_property (GObject * object, guint prop_id,
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switch (prop_id) {
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case PROP_METHOD:
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{
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GstVideoFlipMethod method;
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method = g_value_get_enum (value);
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GST_OBJECT_LOCK (videoflip);
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if (method != videoflip->method) {
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GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
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GST_DEBUG_OBJECT (videoflip, "Changing method from %s to %s",
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video_flip_methods[videoflip->method].value_nick,
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video_flip_methods[method].value_nick);
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videoflip->method = method;
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GST_OBJECT_UNLOCK (videoflip);
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gst_base_transform_set_passthrough (btrans,
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method == GST_VIDEO_FLIP_METHOD_IDENTITY);
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gst_base_transform_reconfigure_src (btrans);
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} else {
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GST_OBJECT_UNLOCK (videoflip);
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}
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}
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gst_video_flip_set_method (videoflip, g_value_get_enum (value), FALSE);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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@ -1232,6 +1294,7 @@ gst_video_flip_class_init (GstVideoFlipClass * klass)
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trans_class->before_transform =
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GST_DEBUG_FUNCPTR (gst_video_flip_before_transform);
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trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_flip_src_event);
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trans_class->sink_event = GST_DEBUG_FUNCPTR (gst_video_flip_sink_event);
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vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_flip_set_info);
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vfilter_class->transform_frame =
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@ -1241,6 +1304,7 @@ gst_video_flip_class_init (GstVideoFlipClass * klass)
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static void
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gst_video_flip_init (GstVideoFlip * videoflip)
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{
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videoflip->method = PROP_METHOD_DEFAULT;
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gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (videoflip), TRUE);
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/* AUTO is not valid for active method, this is just to ensure we setup the
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* method in gst_video_flip_set_method() */
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videoflip->active_method = GST_VIDEO_FLIP_METHOD_AUTO;
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}
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@ -36,6 +36,7 @@ G_BEGIN_DECLS
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* @GST_VIDEO_FLIP_METHOD_VERT: Flip vertically
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* @GST_VIDEO_FLIP_METHOD_TRANS: Flip across upper left/lower right diagonal
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* @GST_VIDEO_FLIP_METHOD_OTHER: Flip across upper right/lower left diagonal
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* @GST_VIDEO_FLIP_METHOD_AUTO: Select flip method based on image-orientation tag
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*
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* The different flip methods.
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*/
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@ -47,7 +48,8 @@ typedef enum {
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GST_VIDEO_FLIP_METHOD_HORIZ,
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GST_VIDEO_FLIP_METHOD_VERT,
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GST_VIDEO_FLIP_METHOD_TRANS,
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GST_VIDEO_FLIP_METHOD_OTHER
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GST_VIDEO_FLIP_METHOD_OTHER,
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GST_VIDEO_FLIP_METHOD_AUTO
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} GstVideoFlipMethod;
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#define GST_TYPE_VIDEO_FLIP \
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@ -74,6 +76,8 @@ struct _GstVideoFlip {
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/* < private > */
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GstVideoFlipMethod method;
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GstVideoFlipMethod tag_method;
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GstVideoFlipMethod active_method;
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void (*process) (GstVideoFlip *videoflip, GstVideoFrame *dest, const GstVideoFrame *src);
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};
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