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gaudieffects: port gaussianblur to GstVideoFilter
This commit is contained in:
Luis de Bethencourt
parent
bc3afe0ac2
commit
c7949405ca
2 changed files with 51 additions and 75 deletions
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@ -69,11 +69,12 @@
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#include "gstplugin.h"
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#include "gstgaussblur.h"
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static gboolean gauss_blur_stop (GstBaseTransform * btrans);
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static gboolean gauss_blur_set_caps (GstBaseTransform * btrans,
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GstCaps * incaps, GstCaps * outcaps);
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static GstFlowReturn gauss_blur_process_frame (GstBaseTransform * btrans,
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GstBuffer * in_buf, GstBuffer * out_buf);
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static void gauss_blur_stop (GObject * object);
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static gboolean gauss_blur_set_info (GstVideoFilter * filter, GstCaps * incaps,
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GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info);
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static GstFlowReturn gauss_blur_transform_frame (GstVideoFilter * vfilter,
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GstVideoFrame * in_frame, GstVideoFrame * out_frame);
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static void gauss_blur_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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@ -111,11 +112,11 @@ enum
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PROP_LAST
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};
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static void cleanup (GaussBlur * gb);
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static gboolean make_gaussian_kernel (GaussBlur * gb, float sigma);
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static void gaussian_smooth (GaussBlur * gb, guint8 * image,
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guint8 * out_image);
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#define gauss_blur_parent_class parent_class
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G_DEFINE_TYPE (GaussBlur, gauss_blur, GST_TYPE_VIDEO_FILTER);
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#define DEFAULT_SIGMA 1.2
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@ -125,7 +126,7 @@ gauss_blur_class_init (GaussBlurClass * klass)
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{
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GObjectClass *object_class = (GObjectClass *) klass;
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
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GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
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gst_element_class_set_details_simple (gstelement_class,
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"GaussBlur",
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@ -140,16 +141,35 @@ gauss_blur_class_init (GaussBlurClass * klass)
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object_class->set_property = gauss_blur_set_property;
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object_class->get_property = gauss_blur_get_property;
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trans_class->stop = GST_DEBUG_FUNCPTR (gauss_blur_stop);
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trans_class->set_caps = GST_DEBUG_FUNCPTR (gauss_blur_set_caps);
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trans_class->transform = GST_DEBUG_FUNCPTR (gauss_blur_process_frame);
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object_class->finalize = GST_DEBUG_FUNCPTR (gauss_blur_stop);
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g_object_class_install_property (object_class, PROP_SIGMA,
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g_param_spec_double ("sigma", "Sigma",
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"Sigma value for gaussian blur (negative for sharpen)",
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-20.0, 20.0, DEFAULT_SIGMA,
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G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
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vfilter_class->transform_frame =
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GST_DEBUG_FUNCPTR (gauss_blur_transform_frame);
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vfilter_class->set_info = GST_DEBUG_FUNCPTR (gauss_blur_set_info);
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}
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static gboolean
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gauss_blur_set_info (GstVideoFilter * filter, GstCaps * incaps,
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GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
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{
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GaussBlur *gb = GAUSS_BLUR (filter);
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guint32 n_elems;
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gb->width = GST_VIDEO_INFO_WIDTH (in_info);
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gb->height = GST_VIDEO_INFO_HEIGHT (in_info);
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/* get stride */
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gb->stride = GST_VIDEO_INFO_COMP_STRIDE (in_info, 0);
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n_elems = gb->stride * gb->height;
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gb->tempim = g_malloc (sizeof (gfloat) * n_elems);
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return TRUE;
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}
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static void
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@ -160,8 +180,10 @@ gauss_blur_init (GaussBlur * gb)
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}
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static void
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cleanup (GaussBlur * gb)
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gauss_blur_stop (GObject * object)
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{
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GaussBlur *gb = GAUSS_BLUR (object);
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g_free (gb->tempim);
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gb->tempim = NULL;
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@ -172,69 +194,29 @@ cleanup (GaussBlur * gb)
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gb->kernel = NULL;
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g_free (gb->kernel_sum);
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gb->kernel_sum = NULL;
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}
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static gboolean
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gauss_blur_stop (GstBaseTransform * btrans)
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{
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GaussBlur *gb = GAUSS_BLUR (btrans);
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cleanup (gb);
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return TRUE;
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}
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static gboolean
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gauss_blur_set_caps (GstBaseTransform * btrans,
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GstCaps * incaps, GstCaps * outcaps)
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{
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GaussBlur *filter = GAUSS_BLUR (btrans);
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GstVideoInfo info;
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GstStructure *structure;
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guint32 n_elems;
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structure = gst_caps_get_structure (incaps, 0);
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g_return_val_if_fail (structure != NULL, FALSE);
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if (!gst_video_info_from_caps (&info, incaps))
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goto invalid_caps;
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filter->info = info;
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filter->width = GST_VIDEO_INFO_WIDTH (&info);
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filter->height = GST_VIDEO_INFO_HEIGHT (&info);
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/* get stride */
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filter->stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
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n_elems = filter->stride * filter->height;
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filter->tempim = g_malloc (sizeof (gfloat) * n_elems);
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return TRUE;
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/* ERROR */
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invalid_caps:
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{
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GST_DEBUG_OBJECT (btrans, "could not parse caps");
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return FALSE;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstFlowReturn
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gauss_blur_process_frame (GstBaseTransform * btrans,
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GstBuffer * in_buf, GstBuffer * out_buf)
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gauss_blur_transform_frame (GstVideoFilter * vfilter,
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GstVideoFrame * in_frame, GstVideoFrame * out_frame)
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{
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GaussBlur *filter = GAUSS_BLUR (btrans);
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GaussBlur *filter = GAUSS_BLUR (vfilter);
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GstClockTime timestamp;
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gint64 stream_time;
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gfloat sigma;
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GstMapInfo imap, omap;
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guint8 *src, *dest;
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/* GstController: update the properties */
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timestamp = GST_BUFFER_TIMESTAMP (in_buf);
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timestamp = GST_BUFFER_TIMESTAMP (in_frame->buffer);
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stream_time =
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gst_segment_to_stream_time (&btrans->segment, GST_FORMAT_TIME, timestamp);
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gst_segment_to_stream_time (&GST_BASE_TRANSFORM (filter)->segment,
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GST_FORMAT_TIME, timestamp);
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GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT,
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GST_TIME_ARGS (timestamp));
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if (GST_CLOCK_TIME_IS_VALID (stream_time))
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gst_object_sync_values (GST_OBJECT (filter), stream_time);
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@ -251,7 +233,7 @@ gauss_blur_process_frame (GstBaseTransform * btrans,
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}
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if (filter->kernel == NULL &&
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!make_gaussian_kernel (filter, filter->cur_sigma)) {
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GST_ELEMENT_ERROR (btrans, RESOURCE, NO_SPACE_LEFT, ("Out of memory"),
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GST_ELEMENT_ERROR (filter, RESOURCE, NO_SPACE_LEFT, ("Out of memory"),
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("Failed to allocation gaussian kernel"));
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return GST_FLOW_ERROR;
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}
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@ -260,14 +242,10 @@ gauss_blur_process_frame (GstBaseTransform * btrans,
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* Perform gaussian smoothing on the image using the input standard
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* deviation.
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*/
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gst_buffer_map (out_buf, &omap, GST_MAP_WRITE);
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gst_buffer_map (in_buf, &imap, GST_MAP_READ);
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memcpy (omap.data, imap.data, filter->height * filter->stride);
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gaussian_smooth (filter, imap.data, omap.data);
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gst_buffer_unmap (in_buf, &imap);
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gst_buffer_unmap (out_buf, &omap);
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src = GST_VIDEO_FRAME_COMP_DATA (in_frame, 0);
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dest = GST_VIDEO_FRAME_COMP_DATA (out_frame, 0);
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gst_video_frame_copy (out_frame, in_frame);
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gaussian_smooth (filter, src, dest);
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return GST_FLOW_OK;
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}
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@ -69,8 +69,6 @@ struct GaussBlur
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float cur_sigma, sigma;
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int windowsize;
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GstVideoInfo info;
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float *kernel;
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float *kernel_sum;
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float *tempim;
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