cinelerra-5.1/cinelerra/vdevicelml.h

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #ifndef VDEVICELML_H
  23 #define VDEVICELML_H
  24
  25 #include "guicast.h"
  26 #include "vdevicebase.h"
  27
  28 #include "jpeg.h"
  29
  30 #define INPUT_BUFFER_SIZE 65536
  31
  32 class VDeviceLML : public VDeviceBase
  33 {
  34 public:
  35         VDeviceLML(VideoDevice *device);
  36         ~VDeviceLML();
  37
  38         int open_input();
  39         int open_output();
  40         int close_all();
  41         int read_buffer(VFrame *frame);
  42         int write_buffer(VFrame *frame, EDL *edl);
  43         int reset_parameters();
  44         ArrayList<int>* get_render_strategies();
  45
  46 private:
  47         int reopen_input();
  48
  49         inline unsigned char get_byte()
  50         {
  51                 if(!input_buffer) input_buffer = new unsigned char[INPUT_BUFFER_SIZE];
  52                 if(input_position >= INPUT_BUFFER_SIZE) refill_input();
  53                 return input_buffer[input_position++];
  54         };
  55
  56         inline unsigned long next_bytes(int total)
  57         {
  58                 unsigned long result = 0;
  59                 int i;
  60
  61                 if(!input_buffer) input_buffer = new unsigned char[INPUT_BUFFER_SIZE];
  62                 if(input_position + total > INPUT_BUFFER_SIZE) refill_input();
  63
  64                 for(i = 0; i < total; i++)
  65                 {
  66                         result <<= 8;
  67                         result |= input_buffer[input_position + i];
  68                 }
  69                 return result;
  70         };
  71
  72         int refill_input();
  73         inline int write_byte(unsigned char byte)
  74         {
  75                 if(!frame_buffer)
  76                 {
  77                         frame_buffer = new unsigned char[256000];
  78                         frame_allocated = 256000;
  79                 }
  80
  81                 if(frame_size >= frame_allocated)
  82                 {
  83                         unsigned char *new_frame = new unsigned char[frame_allocated * 2];
  84                         memcpy(new_frame, frame_buffer, frame_size);
  85                         delete frame_buffer;
  86                         frame_buffer = new_frame;
  87                         frame_allocated *= 2;
  88                 }
  89
  90                 frame_buffer[frame_size++] = byte;
  91                 return 0;
  92         };
  93
  94         int write_fake_marker();
  95
  96         FILE *jvideo_fd;
  97         unsigned char *input_buffer, *frame_buffer;
  98         long input_position;
  99         long frame_size, frame_allocated;
 100         int input_error;
 101 //      quicktime_mjpeg_hdr jpeg_header;
 102         long last_frame_no;
 103         ArrayList<int> render_strategies;
 104 };
 105
 106 #endif