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Updated all plugins to new capsnego format and added some small usability enhancements to v4lelement

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Original commit message from CVS:
Updated all plugins to new capsnego format and added some small usability enhancements to v4lelement
This commit is contained in:
Ronald S. Bultje 2002-01-15 15:52:09 +00:00
parent 7a91639ab7
commit bf770df312
1 changed files with 47 additions and 57 deletions
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104
ext/sdl/sdlvideosink.c
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@ -58,11 +58,9 @@ enum {
static void gst_sdlvideosink_class_init (GstSDLVideoSinkClass *klass);
static void gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink);
static void gst_sdlvideosink_newcaps (GstPad *pad,
static gboolean gst_sdlvideosink_create (GstSDLVideoSink *sdlvideosink);
static GstPadConnectReturn gst_sdlvideosink_sinkconnect (GstPad *pad,
GstCaps *caps);
static GstPadNegotiateReturn gst_sdlvideosink_negotiate (GstPad *pad,
GstCaps **caps,
gpointer *data);
static void gst_sdlvideosink_chain (GstPad *pad,
GstBuffer *buf);
@ -79,6 +77,7 @@ static GstElementStateReturn gst_sdlvideosink_change_state (GstElement
static GstCaps *capslist = NULL;
static GstPadTemplate *sink_template;
static GstElementClass *parent_class = NULL;
static guint gst_sdlvideosink_signals[LAST_SIGNAL] = { 0 };
@ -158,9 +157,9 @@ gst_sdlvideosink_init (GstSDLVideoSink *sdlvideosink)
{
sdlvideosink->sinkpad = gst_pad_new_from_template (sink_template, "sink");
gst_element_add_pad (GST_ELEMENT (sdlvideosink), sdlvideosink->sinkpad);
gst_pad_set_chain_function (sdlvideosink->sinkpad, gst_sdlvideosink_chain);
gst_pad_set_negotiate_function (sdlvideosink->sinkpad, gst_sdlvideosink_negotiate);
gst_pad_set_newcaps_function (sdlvideosink->sinkpad, gst_sdlvideosink_newcaps);
gst_pad_set_connect_function (sdlvideosink->sinkpad, gst_sdlvideosink_sinkconnect);
sdlvideosink->clock = gst_clock_get_system();
gst_clock_register(sdlvideosink->clock, GST_OBJECT(sdlvideosink));
@ -211,19 +210,10 @@ gst_sdlvideosink_get_sdl_from_fourcc (GstSDLVideoSink *sdlvideosink,
}
static void
gst_sdlvideosink_newcaps (GstPad *pad,
GstCaps *caps)
static gboolean
gst_sdlvideosink_create (GstSDLVideoSink *sdlvideosink)
{
GstSDLVideoSink *sdlvideosink;
gulong print_format;
gulong format;
sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad));
sdlvideosink->format = gst_caps_get_fourcc_int (caps, "format");
sdlvideosink->image_width = gst_caps_get_int (caps, "width");
sdlvideosink->image_height = gst_caps_get_int (caps, "height");
if (sdlvideosink->window_height <= 0)
sdlvideosink->window_height = sdlvideosink->image_height;
@ -240,28 +230,28 @@ gst_sdlvideosink_newcaps (GstPad *pad,
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: Couldn't set %dx%d: %s", sdlvideosink->window_width,
sdlvideosink->window_height, SDL_GetError());
return;
return FALSE;
}
else
{
gst_element_info(GST_ELEMENT(sdlvideosink),
"SDL: Set %dx%d @ %d bpp",
sdlvideosink->window_width, sdlvideosink->window_height,
sdlvideosink->screen->format->BitsPerPixel);
}
/* get SDL code */
format = gst_sdlvideosink_get_sdl_from_fourcc(sdlvideosink, sdlvideosink->format);
/* clean possible old YUV overlays (...) and create a new one */
if (sdlvideosink->yuv_overlay) SDL_FreeYUVOverlay(sdlvideosink->yuv_overlay);
if (sdlvideosink->yuv_overlay)
SDL_FreeYUVOverlay(sdlvideosink->yuv_overlay);
sdlvideosink->yuv_overlay = SDL_CreateYUVOverlay(sdlvideosink->image_width,
sdlvideosink->image_height, format, sdlvideosink->screen);
sdlvideosink->image_height, sdlvideosink->format, sdlvideosink->screen);
if ( sdlvideosink->yuv_overlay == NULL )
{
gst_element_error(GST_ELEMENT(sdlvideosink),
"SDL: Couldn't create SDL_yuv_overlay: %s", SDL_GetError());
return;
return FALSE;
}
else
{
gst_element_info(GST_ELEMENT(sdlvideosink),
"Using a %dx%d %dbpp SDL screen with a %dx%d \'%4.4s\' YUV overlay",
sdlvideosink->window_width, sdlvideosink->window_height,
sdlvideosink->screen->format->BitsPerPixel,
sdlvideosink->image_width, sdlvideosink->image_height,
(gchar*)&print_format);
}
sdlvideosink->rect.x = 0;
@ -278,37 +268,23 @@ gst_sdlvideosink_newcaps (GstPad *pad,
/* TODO: is this the width of the input image stream or of the widget? */
g_signal_emit (G_OBJECT (sdlvideosink), gst_sdlvideosink_signals[SIGNAL_HAVE_SIZE], 0,
sdlvideosink->window_width, sdlvideosink->window_height);
return TRUE;
}
static GstPadNegotiateReturn
gst_sdlvideosink_negotiate (GstPad *pad, GstCaps **caps, gpointer *data)
static GstPadConnectReturn
gst_sdlvideosink_sinkconnect (GstPad *pad,
GstCaps *vscapslist)
{
GstSDLVideoSink *sdlvideosink;
GST_DEBUG (0, "sdlvideosink: negotiate %p %p\n", data, *data);
GstCaps *caps;
sdlvideosink = GST_SDLVIDEOSINK (gst_pad_get_parent (pad));
if (*caps == NULL)
{
/* provide our own */
*caps = sdlvideosink->capslist;
if (*caps != NULL)
{
sdlvideosink->capslist = sdlvideosink->capslist->next;
return GST_PAD_NEGOTIATE_TRY;
}
else
{
GST_DEBUG(0, "Out of caps\n");
}
}
else
for (caps = vscapslist; caps != NULL; caps = vscapslist = vscapslist->next)
{
/* check whether it's in any way compatible */
switch (gst_caps_get_fourcc_int(*caps, "format"))
switch (gst_caps_get_fourcc_int(caps, "format"))
{
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('I','Y','U','V'):
@ -316,12 +292,18 @@ gst_sdlvideosink_negotiate (GstPad *pad, GstCaps **caps, gpointer *data)
case GST_MAKE_FOURCC('Y','U','Y','2'):
case GST_MAKE_FOURCC('Y','V','Y','U'):
case GST_MAKE_FOURCC('U','Y','V','Y'):
return GST_PAD_NEGOTIATE_AGREE;
sdlvideosink->format = gst_sdlvideosink_get_sdl_from_fourcc(sdlvideosink,
gst_caps_get_fourcc_int(caps, "format"));
sdlvideosink->image_width = gst_caps_get_int(caps, "width");
sdlvideosink->image_height = gst_caps_get_int(caps, "height");
return GST_PAD_CONNECT_OK;
}
}
/* if we got here - it's not good */
return GST_PAD_NEGOTIATE_FAIL;
gst_element_error(GST_ELEMENT(sdlvideosink),
"Failed to find acceptable caps");
return GST_PAD_CONNECT_REFUSED;
}
@ -482,9 +464,17 @@ gst_sdlvideosink_change_state (GstElement *element)
}
GST_FLAG_SET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
break;
case GST_STATE_READY_TO_NULL:
if (sdlvideosink->yuv_overlay) SDL_FreeYUVOverlay(sdlvideosink->yuv_overlay);
case GST_STATE_READY_TO_PAUSED:
/* create a YUV overlay */
if (!gst_sdlvideosink_create(sdlvideosink))
return GST_STATE_FAILURE;
break;
case GST_STATE_PAUSED_TO_READY:
if (sdlvideosink->yuv_overlay)
SDL_FreeYUVOverlay(sdlvideosink->yuv_overlay);
sdlvideosink->yuv_overlay = NULL;
break;
case GST_STATE_READY_TO_NULL:
SDL_Quit();
GST_FLAG_UNSET (sdlvideosink, GST_SDLVIDEOSINK_OPEN);
break;