status_t
VideoConsumer::AcceptFormat(const media_destination& dest, media_format* format)
{
FUNCTION("VideoConsumer::AcceptFormat\n");
if (dest != fIn.destination) {
ERROR("VideoConsumer::AcceptFormat - BAD DESTINATION\n");
return B_MEDIA_BAD_DESTINATION;
}
if (format->type == B_MEDIA_NO_TYPE)
format->type = B_MEDIA_RAW_VIDEO;
if (format->type != B_MEDIA_RAW_VIDEO) {
ERROR("VideoConsumer::AcceptFormat - BAD FORMAT\n");
return B_MEDIA_BAD_FORMAT;
}
if (format->u.raw_video.display.format
!= media_raw_video_format::wildcard.display.format) {
uint32 flags = 0;
bool supported = bitmaps_support_space(
format->u.raw_video.display.format, &flags);
#ifndef HAIKU_TARGET_PLATFORM_HAIKU
// GRRR! BeOS implementation claims not
// to support these formats, while they work just fine.
switch (format->u.raw_video.display.format) {
case B_YCbCr422:
case B_YCbCr411:
case B_YCbCr444:
case B_YCbCr420:
supported = true;
break;
default:
break;
}
#endif
if (!supported) {
// cannot create bitmaps with such a color space
ERROR("AcceptFormat - unsupported color space for BBitmaps "
"(%s)!\n",
color_space_to_string(format->u.raw_video.display.format));
return B_MEDIA_BAD_FORMAT;
}
if (!fTryOverlay && (flags & B_VIEWS_SUPPORT_DRAW_BITMAP) == 0) {
// BViews do not support drawing such a bitmap
ERROR("AcceptFormat - BViews cannot draw bitmaps in given "
"colorspace (%s)!\n",
color_space_to_string(format->u.raw_video.display.format));
return B_MEDIA_BAD_FORMAT;
}
}
#ifdef TRACE_VIDEO_CONSUMER
char string[256];
string[0] = 0;
string_for_format(*format, string, 256);
FUNCTION("VideoConsumer::AcceptFormat: %s\n", string);
#endif
return B_OK;
}
status_t
NodeManager::_SetUpVideoNodes(color_space preferredVideoFormat,
bool useOverlays)
{
// create the video producer node
fVideoProducer = new VideoProducer(NULL, "MediaPlayer video out", 0,
this, fVideoSupplier);
// register the producer node
fStatus = fMediaRoster->RegisterNode(fVideoProducer);
if (fStatus != B_OK) {
print_error("Can't register the video producer", fStatus);
return fStatus;
}
// make sure the Media Roster knows that we're using the node
// fMediaRoster->GetNodeFor(fVideoProducer->Node().node,
// &fVideoConnection.producer);
fVideoConnection.producer = fVideoProducer->Node();
// create the video consumer node
fVideoConsumer = new VideoConsumer("MediaPlayer video in", NULL, 0, this,
fVideoTarget);
// register the consumer node
fStatus = fMediaRoster->RegisterNode(fVideoConsumer);
if (fStatus != B_OK) {
print_error("Can't register the video consumer", fStatus);
return fStatus;
}
// make sure the Media Roster knows that we're using the node
// fMediaRoster->GetNodeFor(fVideoConsumer->Node().node,
// &fVideoConnection.consumer);
fVideoConnection.consumer = fVideoConsumer->Node();
// find free producer output
media_input videoInput;
media_output videoOutput;
int32 count = 1;
fStatus = fMediaRoster->GetFreeOutputsFor(fVideoConnection.producer,
&videoOutput, 1, &count, B_MEDIA_RAW_VIDEO);
if (fStatus != B_OK || count < 1) {
fStatus = B_RESOURCE_UNAVAILABLE;
print_error("Can't find an available video stream", fStatus);
return fStatus;
}
// find free consumer input
count = 1;
fStatus = fMediaRoster->GetFreeInputsFor(fVideoConnection.consumer,
&videoInput, 1, &count, B_MEDIA_RAW_VIDEO);
if (fStatus != B_OK || count < 1) {
fStatus = B_RESOURCE_UNAVAILABLE;
print_error("Can't find an available connection to the video window",
fStatus);
return fStatus;
}
// connect the nodes
media_format format;
format.type = B_MEDIA_RAW_VIDEO;
media_raw_video_format videoFormat = {
FramesPerSecond(), 1, 0,
(uint32)fVideoBounds.IntegerWidth(),
B_VIDEO_TOP_LEFT_RIGHT, 1, 1,
{
preferredVideoFormat,
(uint32)(fVideoBounds.IntegerWidth() + 1),
(uint32)(fVideoBounds.IntegerHeight() + 1),
0, 0, 0
}
};
format.u.raw_video = videoFormat;
// connect video producer to consumer (hopefully using overlays)
fVideoConsumer->SetTryOverlay(useOverlays);
fStatus = fMediaRoster->Connect(videoOutput.source, videoInput.destination,
&format, &videoOutput, &videoInput);
if (fStatus != B_OK) {
print_error("Can't connect the video source to the video window... "
"trying without overlays", fStatus);
uint32 flags = 0;
bool supported = bitmaps_support_space(
format.u.raw_video.display.format, &flags);
if (!supported || (flags & B_VIEWS_SUPPORT_DRAW_BITMAP) == 0) {
// cannot create bitmaps with such a color space
// or BViews don't support drawing it, fallback to B_RGB32
format.u.raw_video.display.format = B_RGB32;
printf("NodeManager::_SetupVideoNodes() - falling back to "
"B_RGB32\n");
}
fVideoConsumer->SetTryOverlay(false);
// connect video producer to consumer (not using overlays and using
// a colorspace that BViews support drawing)
fStatus = fMediaRoster->Connect(videoOutput.source,
videoInput.destination, &format, &videoOutput, &videoInput);
}
// bail if second attempt failed too
if (fStatus != B_OK) {
print_error("Can't connect the video source to the video window",
fStatus);
return fStatus;
}
// the inputs and outputs might have been reassigned during the
// nodes' negotiation of the Connect(). That's why we wait until
// after Connect() finishes to save their contents.
fVideoConnection.format = format;
fVideoConnection.source = videoOutput.source;
fVideoConnection.destination = videoInput.destination;
fVideoConnection.connected = true;
// set time sources
fStatus = fMediaRoster->SetTimeSourceFor(fVideoConnection.producer.node,
fTimeSource.node);
if (fStatus != B_OK) {
print_error("Can't set the timesource for the video source", fStatus);
return fStatus;
}
fStatus = fMediaRoster->SetTimeSourceFor(fVideoConsumer->ID(),
fTimeSource.node);
if (fStatus != B_OK) {
print_error("Can't set the timesource for the video window", fStatus);
return fStatus;
}
return fStatus;
}