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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <wx/wx.h>
#include <stdint.h>
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
}
class wxToggleButton;
class FFmpegPlayer
{
public:
FFmpegPlayer (wxWindow* parent);
~FFmpegPlayer ();
void set_file (std::string);
wxPanel* panel () const {
return _panel;
}
wxSlider* slider () const {
return _slider;
}
wxToggleButton* play_button () const {
return _play_button;
}
void set_top_crop (int t);
void set_bottom_crop (int b);
void set_left_crop (int l);
void set_right_crop (int r);
void set_ratio (float r);
private:
void timer (wxTimerEvent& ev);
void decode_frame ();
void convert_frame ();
void paint_panel (wxPaintEvent& ev);
void slider_moved (wxCommandEvent& ev);
float frames_per_second () const;
void allocate_buffer_and_scaler ();
float width_source_to_view_scaling () const;
float height_source_to_view_scaling () const;
int cropped_width_in_view () const;
int cropped_height_in_view () const;
int left_crop_in_view () const;
int top_crop_in_view () const;
void panel_sized (wxSizeEvent &);
void play_clicked (wxCommandEvent &);
void check_play_state ();
void update_panel ();
bool can_display () const;
AVFormatContext* _format_context;
int _video_stream;
AVFrame* _frame;
AVCodecContext* _video_codec_context;
AVCodec* _video_codec;
AVPacket _packet;
struct SwsContext* _scale_context;
bool _frame_valid;
uint8_t* _rgb[1];
int _rgb_stride[1];
wxPanel* _panel;
wxSlider* _slider;
wxToggleButton* _play_button;
wxTimer _timer;
int _panel_width;
int _panel_height;
int _full_width;
int _full_height;
int _top_crop_in_source;
int _bottom_crop_in_source;
int _left_crop_in_source;
int _right_crop_in_source;
float _ratio;
};
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