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/*
* image_handler.h - image image handler class
*
* Copyright (c) 2017 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author: Wind Yuan <feng.yuan@intel.com>
*/
#ifndef XCAM_IMAGE_HANDLER_H
#define XCAM_IMAGE_HANDLER_H
#include <xcam_std.h>
#include <meta_data.h>
#include <buffer_pool.h>
#include <worker.h>
#define DECLARE_HANDLER_CALLBACK(CbClass, Next, mem_func) \
class CbClass : public ::XCam::ImageHandler::Callback { \
private: ::XCam::SmartPtr<Next> _h; \
public: CbClass (const ::XCam::SmartPtr<Next> &h) { _h = h;} \
protected: void execute_status ( \
const ::XCam::SmartPtr<::XCam::ImageHandler> &handler, \
const ::XCam::SmartPtr<::XCam::ImageHandler::Parameters> ¶ms, \
const XCamReturn error) { \
_h->mem_func (handler, params, error); } \
}
#define XCAM_DEFAULT_HANDLER_BUF_CAP 4
namespace XCam {
class ImageHandler;
class ImageHandler
: public RefObj
{
public:
struct Parameters {
SmartPtr<VideoBuffer> in_buf;
SmartPtr<VideoBuffer> out_buf;
Parameters (const SmartPtr<VideoBuffer> &in = NULL, const SmartPtr<VideoBuffer> &out = NULL)
: in_buf (in), out_buf (out)
{}
virtual ~Parameters() {}
bool add_meta (const SmartPtr<MetaBase> &meta);
template <typename MType> SmartPtr<MType> find_meta ();
private:
MetaBaseList _metas;
};
class Callback {
public:
Callback () {}
virtual ~Callback () {}
virtual void execute_status (
const SmartPtr<ImageHandler> &handler, const SmartPtr<Parameters> ¶ms, const XCamReturn error) = 0;
private:
XCAM_DEAD_COPY (Callback);
};
public:
explicit ImageHandler (const char* name);
virtual ~ImageHandler ();
bool set_callback (SmartPtr<Callback> cb) {
_callback = cb;
return true;
}
const SmartPtr<Callback> & get_callback () const {
return _callback;
}
const char *get_name () const {
return _name;
}
bool set_out_video_info (const VideoBufferInfo &info);
bool enable_allocator (bool enable, uint32_t buf_count = XCAM_DEFAULT_HANDLER_BUF_CAP);
// virtual functions
// execute_buffer params should NOT be const
virtual XCamReturn execute_buffer (const SmartPtr<Parameters> ¶ms, bool sync);
virtual void execute_done (const SmartPtr<ImageHandler::Parameters> ¶m, XCamReturn err);
virtual XCamReturn finish ();
virtual XCamReturn terminate ();
protected:
virtual XCamReturn configure_resource (const SmartPtr<Parameters> ¶m) = 0;
virtual SmartPtr<BufferPool> create_allocator () = 0;
virtual XCamReturn configure_rest ();
virtual XCamReturn start_work (const SmartPtr<Parameters> ¶m) = 0;
virtual void execute_status_check (const SmartPtr<Parameters> ¶ms, const XCamReturn error);
bool set_allocator (const SmartPtr<BufferPool> &allocator);
const SmartPtr<BufferPool> &get_allocator () const {
return _allocator;
}
XCamReturn reserve_buffers (const VideoBufferInfo &info, uint32_t count);
SmartPtr<VideoBuffer> get_free_buf ();
const VideoBufferInfo &get_out_video_info () {
return _out_video_info;
}
private:
XCAM_DEAD_COPY (ImageHandler);
protected:
bool _need_configure;
bool _enable_allocator;
private:
SmartPtr<Callback> _callback;
VideoBufferInfo _out_video_info;
SmartPtr<BufferPool> _allocator;
uint32_t _buf_capacity;
char *_name;
};
inline bool
ImageHandler::Parameters::add_meta (const SmartPtr<MetaBase> &meta)
{
if (!meta.ptr ())
return false;
_metas.push_back (meta);
return true;
}
template <typename MType>
SmartPtr<MType>
ImageHandler::Parameters::find_meta ()
{
for (MetaBaseList::iterator i = _metas.begin (); i != _metas.end (); ++i) {
SmartPtr<MType> m = (*i).dynamic_cast_ptr<MType> ();
if (m.ptr ())
return m;
}
return NULL;
}
};
#endif //XCAM_IMAGE_HANDLER_H
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