Re: [Playerstage-users] data type of opaqueproxy

[Abqori A. <abq...@gm...>]

Thanks for replying.
I found opaquedriver.cc, but neither of sharedstruct.h, or opaque.c.
I'm using Player 2.1.2 and Stage 2.1.1

Did you mean this part?
OpaqueDriver::OpaqueDriver(ConfigFile* cf, int section)
    : Driver(cf, section, false, PLAYER_MSGQUEUE_DEFAULT_MAXLEN,
             PLAYER_OPAQUE_CODE)
{
  mData.data_count = sizeof(test_t);
  mData.data = reinterpret_cast<uint8_t*>(&mTestStruct);

  mTestStruct.uint8 = 0;
  mTestStruct.int8 = 0;
  mTestStruct.uint16 = 0;
  mTestStruct.int16 = 0;
  mTestStruct.uint32 = 0;
  mTestStruct.int32 = 0;
  mTestStruct.doub = 0;

  return;
}

I'll learn about this "casting" and try them, thanks.

On Sun, May 22, 2011 at 12:46 AM, Rich Mattes <jp...@gm...> wrote:

> On 05/21/2011 10:18 AM, Abqori Aula wrote:
>
> The type is only uint8_t because each uint8 is one byte, which makes
> packing larger types and structs into it a lot easer.  The examples in
> examples/plugins/opaquedriver/ outline how to do what you're trying to
> do.  opaquedriver.cc contains a driver which packs a user-defined
> structure (defined in sharedstruct.h) into the opaque proxy.  There's
> also opaque.c, which uses the playerc client library to subscribe to the
> example driver and unpack the structure from the opaque message.   You
> can use the same kind of casting to send any datatypes you want.
>
> Rich
>
>