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-rw-r--r--ext/sdl/sdlvideosink.c74
-rw-r--r--ext/sdl/sdlvideosink.h4
2 files changed, 59 insertions, 19 deletions
diff --git a/ext/sdl/sdlvideosink.c b/ext/sdl/sdlvideosink.c
index 69b6c887..0fb562c7 100644
--- a/ext/sdl/sdlvideosink.c
+++ b/ext/sdl/sdlvideosink.c
@@ -32,6 +32,21 @@
#include "sdlvideosink.h"
+GST_DEBUG_CATEGORY_STATIC (sdlvideosink_debug);
+#define GST_CAT_DEFAULT sdlvideosink_debug
+
+/* These macros are adapted from videotestsrc.c
+ * and/or gst-plugins/gst/games/gstvideoimage.c */
+#define I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
+#define I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
+#define I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(I420_Y_ROWSTRIDE(width)))/2)
+
+#define I420_Y_OFFSET(w,h) (0)
+#define I420_U_OFFSET(w,h) (I420_Y_OFFSET(w,h)+(I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
+#define I420_V_OFFSET(w,h) (I420_U_OFFSET(w,h)+(I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
+
+#define I420_SIZE(w,h) (I420_V_OFFSET(w,h)+(I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
+
/* elementfactory information */
static GstElementDetails gst_sdlvideosink_details = {
"Video sink",
@@ -124,22 +139,26 @@ gst_sdlvideosink_base_init (gpointer g_class)
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *capslist;
gint i;
- gulong format[6] = { GST_MAKE_FOURCC ('I', '4', '2', '0'),
+ guint32 formats[] = {
+ GST_MAKE_FOURCC ('I', '4', '2', '0'),
GST_MAKE_FOURCC ('Y', 'V', '1', '2'),
- GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
+ GST_MAKE_FOURCC ('Y', 'U', 'Y', '2')
+/*
GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'),
GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y')
+*/
};
/* make a list of all available caps */
capslist = gst_caps_new_empty ();
- for (i = 0; i < 5; i++) {
+ for (i = 0; i < G_N_ELEMENTS (formats); i++) {
gst_caps_append_structure (capslist,
gst_structure_new ("video/x-raw-yuv",
- "format", GST_TYPE_FOURCC, format[i],
+ "format", GST_TYPE_FOURCC, formats[i],
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
- "framerate", GST_TYPE_DOUBLE_RANGE, 1.0, 100.0, NULL));
+ "framerate", GST_TYPE_DOUBLE_RANGE, (gdouble) 1.0,
+ (gdouble) 100.0, NULL));
}
sink_template = gst_pad_template_new ("sink",
@@ -147,6 +166,9 @@ gst_sdlvideosink_base_init (gpointer g_class)
gst_element_class_add_pad_template (element_class, sink_template);
gst_element_class_set_details (element_class, &gst_sdlvideosink_details);
+
+ GST_DEBUG_CATEGORY_INIT (sdlvideosink_debug, "sdlvideosink", 0,
+ "SDL video sink element");
}
static void
@@ -189,7 +211,7 @@ gst_sdlvideosink_class_init (GstSDLVideoSinkClass * klass)
gstelement_class = (GstElementClass *) klass;
gstvs_class = (GstBaseSinkClass *) klass;
- parent_class = g_type_class_ref (GST_TYPE_BASE_SINK);
+ parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_sdlvideosink_set_property;
gobject_class->get_property = gst_sdlvideosink_get_property;
@@ -337,8 +359,9 @@ gst_sdlvideosink_get_sdl_from_fourcc (GstSDLVideoSink * sdlvideosink,
guint32 code)
{
switch (code) {
+ /* Note: SDL_IYUV_OVERLAY does not always work for I420 */
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
- return SDL_IYUV_OVERLAY;
+ return SDL_YV12_OVERLAY;
case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
return SDL_YV12_OVERLAY;
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
@@ -544,9 +567,9 @@ gst_sdlvideosink_setcaps (GstBaseSink * bsink, GstCaps * vscapslist)
sdlvideosink = GST_SDLVIDEOSINK (bsink);
structure = gst_caps_get_structure (vscapslist, 0);
- gst_structure_get_fourcc (structure, "format", &format);
+ gst_structure_get_fourcc (structure, "format", &sdlvideosink->fourcc);
sdlvideosink->format =
- gst_sdlvideosink_get_sdl_from_fourcc (sdlvideosink, format);
+ gst_sdlvideosink_get_sdl_from_fourcc (sdlvideosink, sdlvideosink->fourcc);
gst_structure_get_int (structure, "width", &sdlvideosink->width);
gst_structure_get_int (structure, "height", &sdlvideosink->height);
gst_structure_get_double (structure, "framerate", &sdlvideosink->framerate);
@@ -574,21 +597,36 @@ gst_sdlvideosink_show_frame (GstBaseSink * bsink, GstBuffer * buf)
!sdlvideosink->overlay || !sdlvideosink->overlay->pixels)
goto not_init;
- if (GST_BUFFER_DATA (buf) != sdlvideosink->overlay->pixels[0]) {
+ /* if (GST_BUFFER_DATA (buf) != sdlvideosink->overlay->pixels[0]) */
+ if (TRUE) {
if (!gst_sdlvideosink_lock (sdlvideosink))
goto cannot_lock;
/* buf->yuv - FIXME: bufferpool! */
- if (sdlvideosink->format == SDL_IYUV_OVERLAY ||
- sdlvideosink->format == SDL_YV12_OVERLAY) {
- memcpy (sdlvideosink->overlay->pixels[0], GST_BUFFER_DATA (buf),
+ if (sdlvideosink->format == SDL_YV12_OVERLAY) {
+ guint8 *y, *u, *v;
+
+ switch (sdlvideosink->fourcc) {
+ case GST_MAKE_FOURCC ('I', '4', '2', '0'):
+ y = GST_BUFFER_DATA (buf);
+ /* I420 is YV12 with switched colour planes and different offsets */
+ v = y + I420_U_OFFSET (sdlvideosink->width, sdlvideosink->height);
+ u = y + I420_V_OFFSET (sdlvideosink->width, sdlvideosink->height);
+ break;
+ case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
+ y = GST_BUFFER_DATA (buf);
+ u = y + sdlvideosink->width * sdlvideosink->height;
+ v = y + sdlvideosink->width * sdlvideosink->height * 5 / 4;
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+
+ memcpy (sdlvideosink->overlay->pixels[0], y,
sdlvideosink->width * sdlvideosink->height);
- memcpy (sdlvideosink->overlay->pixels[1],
- GST_BUFFER_DATA (buf) + sdlvideosink->width * sdlvideosink->height,
+ memcpy (sdlvideosink->overlay->pixels[1], u,
sdlvideosink->width * sdlvideosink->height / 4);
- memcpy (sdlvideosink->overlay->pixels[2],
- GST_BUFFER_DATA (buf) +
- sdlvideosink->width * sdlvideosink->height * 5 / 4,
+ memcpy (sdlvideosink->overlay->pixels[2], v,
sdlvideosink->width * sdlvideosink->height / 4);
} else {
memcpy (sdlvideosink->overlay->pixels[0], GST_BUFFER_DATA (buf),
diff --git a/ext/sdl/sdlvideosink.h b/ext/sdl/sdlvideosink.h
index eaf0e9ee..5e3984b5 100644
--- a/ext/sdl/sdlvideosink.h
+++ b/ext/sdl/sdlvideosink.h
@@ -49,7 +49,9 @@ typedef struct _GstSDLVideoSinkClass GstSDLVideoSinkClass;
struct _GstSDLVideoSink {
GstVideoSink videosink;
- guint32 format;
+ guint32 format; /* the SDL format */
+ guint32 fourcc; /* our fourcc from the caps */
+
gint width, height; /* the size of the incoming YUV stream */
unsigned long xwindow_id;
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 06:48:29 +0000