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-rw-r--r--ext/cairo/gsttimeoverlay.c328
-rw-r--r--ext/cairo/gsttimeoverlay.h5
2 files changed, 152 insertions, 181 deletions
diff --git a/ext/cairo/gsttimeoverlay.c b/ext/cairo/gsttimeoverlay.c
index 6016d941..7fc7bd9f 100644
--- a/ext/cairo/gsttimeoverlay.c
+++ b/ext/cairo/gsttimeoverlay.c
@@ -27,179 +27,47 @@
#include "config.h"
#endif
-/*#define DEBUG_ENABLED */
#include <gsttimeoverlay.h>
+
#include <string.h>
#include <math.h>
#include <cairo.h>
+#include <gst/video/video.h>
-/* GstTimeoverlay signals and args */
-enum
-{
- /* FILL ME */
- LAST_SIGNAL
-};
-
-enum
-{
- ARG_0
- /* FILL ME */
-};
-
-static void gst_timeoverlay_base_init (gpointer g_class);
-static void gst_timeoverlay_class_init (gpointer g_class, gpointer class_data);
-static void gst_timeoverlay_init (GTypeInstance * instance, gpointer g_class);
-
-static void gst_timeoverlay_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec);
-static void gst_timeoverlay_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec);
-
-static void gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest,
- void *src);
-static void gst_timeoverlay_setup (GstVideofilter * videofilter);
-
-GType
-gst_timeoverlay_get_type (void)
-{
- static GType timeoverlay_type = 0;
-
- if (!timeoverlay_type) {
- static const GTypeInfo timeoverlay_info = {
- sizeof (GstTimeoverlayClass),
- gst_timeoverlay_base_init,
- NULL,
- gst_timeoverlay_class_init,
- NULL,
- NULL,
- sizeof (GstTimeoverlay),
- 0,
- gst_timeoverlay_init,
- };
-
- timeoverlay_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
- "GstTimeoverlay", &timeoverlay_info, 0);
- }
- return timeoverlay_type;
-}
-
-static GstVideofilterFormat gst_timeoverlay_formats[] = {
- {"I420", 12, gst_timeoverlay_planar411,},
-};
-
-
-static void
-gst_timeoverlay_base_init (gpointer g_class)
-{
- static GstElementDetails timeoverlay_details =
- GST_ELEMENT_DETAILS ("Time Overlay",
- "Filter/Editor/Video",
- "Overlays the time on a video stream",
- "David Schleef <ds@schleef.org>");
- GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
- GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
- int i;
-
- gst_element_class_set_details (element_class, &timeoverlay_details);
-
- for (i = 0; i < G_N_ELEMENTS (gst_timeoverlay_formats); i++) {
- gst_videofilter_class_add_format (videofilter_class,
- gst_timeoverlay_formats + i);
- }
-
- gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class));
-}
-
-static void
-gst_timeoverlay_class_init (gpointer g_class, gpointer class_data)
-{
- GObjectClass *gobject_class;
- GstVideofilterClass *videofilter_class;
-
- gobject_class = G_OBJECT_CLASS (g_class);
- videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
-
-#if 0
- g_object_class_install_property (gobject_class, ARG_METHOD,
- g_param_spec_enum ("method", "method", "method",
- GST_TYPE_TIMEOVERLAY_METHOD, GST_TIMEOVERLAY_METHOD_1,
- G_PARAM_READWRITE));
-#endif
-
- gobject_class->set_property = gst_timeoverlay_set_property;
- gobject_class->get_property = gst_timeoverlay_get_property;
-
- videofilter_class->setup = gst_timeoverlay_setup;
-}
-
-static void
-gst_timeoverlay_init (GTypeInstance * instance, gpointer g_class)
-{
- GstTimeoverlay *timeoverlay = GST_TIMEOVERLAY (instance);
- GstVideofilter *videofilter;
-
- GST_DEBUG ("gst_timeoverlay_init");
+static GstElementDetails timeoverlay_details =
+GST_ELEMENT_DETAILS ("Time Overlay",
+ "Filter/Editor/Video",
+ "Overlays the time on a video stream",
+ "David Schleef <ds@schleef.org>");
- videofilter = GST_VIDEOFILTER (timeoverlay);
-
- /* do stuff */
-}
-
-static void
-gst_timeoverlay_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstTimeoverlay *src;
+static GstStaticPadTemplate gst_timeoverlay_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
+ );
- g_return_if_fail (GST_IS_TIMEOVERLAY (object));
- src = GST_TIMEOVERLAY (object);
+static GstStaticPadTemplate gst_timeoverlay_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
+ );
- GST_DEBUG ("gst_timeoverlay_set_property");
- switch (prop_id) {
-#if 0
- case ARG_METHOD:
- src->method = g_value_get_enum (value);
- break;
-#endif
- default:
- break;
- }
-}
+static GstVideofilterClass *parent_class = NULL;
static void
-gst_timeoverlay_get_property (GObject * object, guint prop_id, GValue * value,
- GParamSpec * pspec)
+gst_timeoverlay_update_font_height (GstTimeoverlay * timeoverlay)
{
- GstTimeoverlay *src;
-
- g_return_if_fail (GST_IS_TIMEOVERLAY (object));
- src = GST_TIMEOVERLAY (object);
-
- switch (prop_id) {
-#if 0
- case ARG_METHOD:
- g_value_set_enum (value, src->method);
- break;
-#endif
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gst_timeoverlay_update_font_height (GstVideofilter * videofilter)
-{
- GstTimeoverlay *timeoverlay = GST_TIMEOVERLAY (videofilter);
gint width, height;
cairo_surface_t *font_surface;
cairo_t *font_cairo;
cairo_font_extents_t font_extents;
- width = gst_videofilter_get_input_width (videofilter);
- height = gst_videofilter_get_input_height (videofilter);
+ width = timeoverlay->width;
+ height = timeoverlay->height;
font_surface =
cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
@@ -216,15 +84,58 @@ gst_timeoverlay_update_font_height (GstVideofilter * videofilter)
font_cairo = NULL;
}
-static void
-gst_timeoverlay_setup (GstVideofilter * videofilter)
+static gboolean
+gst_timeoverlay_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
+ GstCaps * outcaps)
{
- GstTimeoverlay *timeoverlay;
+ GstTimeoverlay *filter = GST_TIMEOVERLAY (btrans);
+ GstStructure *structure;
+ gboolean ret = FALSE;
+
+ structure = gst_caps_get_structure (incaps, 0);
+
+ if (gst_structure_get_int (structure, "width", &filter->width) &&
+ gst_structure_get_int (structure, "height", &filter->height)) {
+ gst_timeoverlay_update_font_height (filter);
+ ret = TRUE;
+ }
+
+ 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_timeoverlay_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
+ guint * size)
+{
+ GstTimeoverlay *filter;
+ GstStructure *structure;
+ gboolean ret = FALSE;
+ gint width, height;
+
+ filter = GST_TIMEOVERLAY (btrans);
+
+ structure = gst_caps_get_structure (caps, 0);
- g_return_if_fail (GST_IS_TIMEOVERLAY (videofilter));
- timeoverlay = GST_TIMEOVERLAY (videofilter);
+ 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 (filter, "our frame size is %d bytes (%dx%d)", *size,
+ width, height);
+ }
- gst_timeoverlay_update_font_height (videofilter);
+ return ret;
}
static char *
@@ -250,8 +161,9 @@ gst_timeoverlay_print_smpte_time (guint64 time)
}
-static void
-gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest, void *src)
+static GstFlowReturn
+gst_timeoverlay_transform (GstBaseTransform * trans, GstBuffer * in,
+ GstBuffer * out)
{
GstTimeoverlay *timeoverlay;
int width;
@@ -261,15 +173,20 @@ gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest, void *src)
int i, j;
unsigned char *image;
cairo_text_extents_t extents;
-
+ gpointer dest, src;
cairo_surface_t *font_surface;
cairo_t *text_cairo;
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ timeoverlay = GST_TIMEOVERLAY (trans);
+
+ gst_buffer_stamp (out, in);
- g_return_if_fail (GST_IS_TIMEOVERLAY (videofilter));
- timeoverlay = GST_TIMEOVERLAY (videofilter);
+ src = GST_BUFFER_DATA (in);
+ dest = GST_BUFFER_DATA (out);
- width = gst_videofilter_get_input_width (videofilter);
- height = gst_videofilter_get_input_height (videofilter);
+ width = timeoverlay->width;
+ height = timeoverlay->height;
/* create surface for font rendering */
/* FIXME: preparation of the surface could also be done once when settings
@@ -292,9 +209,7 @@ gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest, void *src)
cairo_fill (text_cairo);
cairo_restore (text_cairo);
- string =
- gst_timeoverlay_print_smpte_time (GST_BUFFER_TIMESTAMP (videofilter->
- in_buf));
+ string = gst_timeoverlay_print_smpte_time (GST_BUFFER_TIMESTAMP (in));
cairo_save (text_cairo);
cairo_select_font_face (text_cairo, "monospace", 0, 0);
cairo_set_font_size (text_cairo, 20);
@@ -303,12 +218,6 @@ gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest, void *src)
cairo_move_to (text_cairo, 0, timeoverlay->text_height - 2);
cairo_show_text (text_cairo, string);
g_free (string);
-#if 0
- cairo_text_path (timeoverlay->cr, string);
- cairo_set_rgb_color (timeoverlay->cr, 1, 1, 1);
- cairo_set_line_width (timeoverlay->cr, 1.0);
- cairo_stroke (timeoverlay->cr);
-#endif
cairo_restore (text_cairo);
@@ -317,7 +226,7 @@ gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest, void *src)
if (b_width > width)
b_width = width;
- memcpy (dest, src, videofilter->from_buf_size);
+ memcpy (dest, src, GST_BUFFER_SIZE (in));
for (i = 0; i < timeoverlay->text_height; i++) {
for (j = 0; j < b_width; j++) {
((unsigned char *) dest)[i * width + j] = image[(i * width + j) * 4 + 0];
@@ -332,4 +241,67 @@ gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest, void *src)
cairo_destroy (text_cairo);
text_cairo = NULL;
g_free (image);
+
+ return ret;
+}
+
+static void
+gst_timeoverlay_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_set_details (element_class, &timeoverlay_details);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_timeoverlay_sink_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_timeoverlay_src_template));
+}
+
+static void
+gst_timeoverlay_class_init (gpointer klass, gpointer class_data)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *element_class;
+ GstBaseTransformClass *trans_class;
+
+ gobject_class = (GObjectClass *) klass;
+ element_class = (GstElementClass *) klass;
+ trans_class = (GstBaseTransformClass *) klass;
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_timeoverlay_set_caps);
+ trans_class->get_unit_size =
+ GST_DEBUG_FUNCPTR (gst_timeoverlay_get_unit_size);
+ trans_class->transform = GST_DEBUG_FUNCPTR (gst_timeoverlay_transform);
+}
+
+static void
+gst_timeoverlay_init (GTypeInstance * instance, gpointer g_class)
+{
+}
+
+GType
+gst_timeoverlay_get_type (void)
+{
+ static GType timeoverlay_type = 0;
+
+ if (!timeoverlay_type) {
+ static const GTypeInfo timeoverlay_info = {
+ sizeof (GstTimeoverlayClass),
+ gst_timeoverlay_base_init,
+ NULL,
+ gst_timeoverlay_class_init,
+ NULL,
+ NULL,
+ sizeof (GstTimeoverlay),
+ 0,
+ gst_timeoverlay_init,
+ };
+
+ timeoverlay_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
+ "GstTimeoverlay", &timeoverlay_info, 0);
+ }
+ return timeoverlay_type;
}
diff --git a/ext/cairo/gsttimeoverlay.h b/ext/cairo/gsttimeoverlay.h
index a71d04bf..eaa098de 100644
--- a/ext/cairo/gsttimeoverlay.h
+++ b/ext/cairo/gsttimeoverlay.h
@@ -21,13 +21,11 @@
#ifndef __GST_TIMEOVERLAY_H__
#define __GST_TIMEOVERLAY_H__
-
#include <gst/gst.h>
#include <cairo.h>
#include "gstvideofilter.h"
-
G_BEGIN_DECLS
#define GST_TYPE_TIMEOVERLAY \
@@ -47,6 +45,8 @@ typedef struct _GstTimeoverlayClass GstTimeoverlayClass;
struct _GstTimeoverlay {
GstVideofilter videofilter;
+ gint width, height;
+
cairo_surface_t *surface;
cairo_t *cr;
int text_height;
@@ -62,4 +62,3 @@ GType gst_timeoverlay_get_type(void);
G_END_DECLS
#endif /* __GST_TIMEOVERLAY_H__ */
-
generated by cgit (git 2.34.1) at 2024-07-03 23:28:59 +0000