static void
fill_i420 (guint8 * data, gint width, gint height, gint color)
{
gint size = I420_Y_ROWSTRIDE (width) * GST_ROUND_UP_2 (height);
gint size4 = size >> 2;
guint8 *yp = data;
guint8 *up = data + I420_U_OFFSET (width, height);
guint8 *vp = data + I420_V_OFFSET (width, height);
memset (yp, y_colors[color], size);
memset (up, u_colors[color], size4);
memset (vp, v_colors[color], size4);
}
static GstFlowReturn
gst_sdlvideosink_show_frame (GstBaseSink * bsink, GstBuffer * buf)
{
GstSDLVideoSink *sdlvideosink;
sdlvideosink = GST_SDLVIDEOSINK (bsink);
g_mutex_lock (sdlvideosink->lock);
if (!sdlvideosink->init ||
!sdlvideosink->overlay || !sdlvideosink->overlay->pixels)
goto not_init;
/* if (GST_BUFFER_DATA (buf) != sdlvideosink->overlay->pixels[0]) */
if (TRUE) {
guint8 *out;
gint l;
if (!gst_sdlvideosink_lock (sdlvideosink))
goto cannot_lock;
/* buf->yuv - FIXME: bufferpool! */
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 + I420_U_OFFSET (sdlvideosink->width, sdlvideosink->height);
v = y + I420_V_OFFSET (sdlvideosink->width, sdlvideosink->height);
break;
default:
gst_sdlvideosink_unlock (sdlvideosink);
g_mutex_unlock (sdlvideosink->lock);
g_return_val_if_reached (GST_FLOW_ERROR);
}
/* Y Plane */
out = sdlvideosink->overlay->pixels[0];
for (l = 0; l < sdlvideosink->height; l++) {
memcpy (out, y, I420_Y_ROWSTRIDE (sdlvideosink->width));
out += sdlvideosink->overlay->pitches[0];
y += I420_Y_ROWSTRIDE (sdlvideosink->width);
}
/* U plane */
out = sdlvideosink->overlay->pixels[1];
for (l = 0; l < (sdlvideosink->height / 2); l++) {
memcpy (out, u, I420_U_ROWSTRIDE (sdlvideosink->width));
out += sdlvideosink->overlay->pitches[1];
u += I420_U_ROWSTRIDE (sdlvideosink->width);
}
/* V plane */
out = sdlvideosink->overlay->pixels[2];
for (l = 0; l < (sdlvideosink->height / 2); l++) {
memcpy (out, v, I420_V_ROWSTRIDE (sdlvideosink->width));
out += sdlvideosink->overlay->pitches[2];
v += I420_V_ROWSTRIDE (sdlvideosink->width);
}
} else {
guint8 *in = GST_BUFFER_DATA (buf);
gint in_stride = sdlvideosink->width * 2;
out = sdlvideosink->overlay->pixels[0];
for (l = 0; l < sdlvideosink->height; l++) {
memcpy (out, in, in_stride);
out += sdlvideosink->overlay->pitches[0];
in += in_stride;
}
}
gst_sdlvideosink_unlock (sdlvideosink);
}
/* Show, baby, show! */
SDL_DisplayYUVOverlay (sdlvideosink->overlay, &(sdlvideosink->rect));
/* Handle any resize */
gst_sdlv_process_events (sdlvideosink);
g_mutex_unlock (sdlvideosink->lock);
return GST_FLOW_OK;
/* ERRORS */
not_init:
{
GST_ELEMENT_ERROR (sdlvideosink, CORE, NEGOTIATION, (NULL),
("not negotiated."));
g_mutex_unlock (sdlvideosink->lock);
return GST_FLOW_NOT_NEGOTIATED;
}
cannot_lock:
{
/* lock function posted detailed message */
g_mutex_unlock (sdlvideosink->lock);
return GST_FLOW_ERROR;
}
}