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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains the GAPI decoder class.
#ifndef O3D_COMMAND_BUFFER_SERVICE_CROSS_GAPI_DECODER_H_
#define O3D_COMMAND_BUFFER_SERVICE_CROSS_GAPI_DECODER_H_
#include "core/cross/types.h"
#include "command_buffer/service/cross/cmd_parser.h"
namespace o3d {
namespace command_buffer {
class GAPIInterface;
class CommandBufferEngine;
// This class implements the AsyncAPIInterface interface, decoding GAPI
// commands and sending them to a GAPI interface.
class GAPIDecoder : public AsyncAPIInterface {
public:
typedef BufferSyncInterface::ParseError ParseError;
explicit GAPIDecoder(GAPIInterface *gapi) : gapi_(gapi), engine_(NULL) {}
virtual ~GAPIDecoder() {}
// Executes a command.
// Parameters:
// command: the command index.
// arg_count: the number of CommandBufferEntry arguments.
// args: the arguments.
// Returns:
// BufferSyncInterface::NO_ERROR if no error was found, one of
// BufferSyncInterface::ParseError otherwise.
virtual ParseError DoCommand(unsigned int command,
unsigned int arg_count,
const void* args);
// Sets the engine, to get shared memory buffers from, and to set the token
// to.
void set_engine(CommandBufferEngine *engine) { engine_ = engine; }
private:
// Decodes the SET_VERTEX_INPUT command.
ParseError DecodeSetVertexInput(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the CREATE_TEXTURE_2D command.
ParseError DecodeCreateTexture2D(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the CREATE_TEXTURE_3D command.
ParseError DecodeCreateTexture3D(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the CREATE_TEXTURE_CUBE command.
ParseError DecodeCreateTextureCube(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the SET_TEXTURE_DATA command.
ParseError DecodeSetTextureData(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the SET_TEXTURE_DATA_IMMEDIATE command.
ParseError DecodeSetTextureDataImmediate(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the GET_TEXTURE_DATA command.
ParseError DecodeGetTextureData(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the SET_SAMPLER_STATES command.
ParseError DecodeSetSamplerStates(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the SET_STENCIL_TEST command.
ParseError DecodeSetStencilTest(unsigned int arg_count,
CommandBufferEntry *args);
// Decodes the SET_BLENDING command.
ParseError DecodeSetBlending(unsigned int arg_count,
CommandBufferEntry *args);
// Gets the address of shared memory data, given a shared memory ID and an
// offset. Also checks that the size is consistent with the shared memory
// size.
// Parameters:
// shm_id: the id of the shared memory buffer.
// offset: the offset of the data in the shared memory buffer.
// size: the size of the data.
// Returns:
// NULL if shm_id isn't a valid shared memory buffer ID or if the size
// check fails. Return a pointer to the data otherwise.
void *GetAddressAndCheckSize(unsigned int shm_id,
unsigned int offset,
unsigned int size);
// Generate a member function prototype for each command in an automated and
// typesafe way.
#define O3D_COMMAND_BUFFER_CMD_OP(name) \
ParseError Handle_ ## name( \
unsigned int arg_count, \
const cmd::name& args); \
O3D_COMMAND_BUFFER_CMDS
#undef O3D_COMMAND_BUFFER_CMD_OP
GAPIInterface *gapi_;
CommandBufferEngine *engine_;
};
} // namespace command_buffer
} // namespace o3d
#endif // O3D_COMMAND_BUFFER_SERVICE_CROSS_GAPI_DECODER_H_
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