hvirtual/cinelerra/vdevicebuz.h

   1 #ifndef VDEVICEBUZ_H
   2 #define VDEVICEBUZ_H
   3
   4 #include "buz.h"
   5 #include "channel.inc"
   6 #include "guicast.h"
   7 #include "libmjpeg.h"
   8 #include "mutex.h"
   9 #include "sema.h"
  10 #include "thread.h"
  11 #include "vdevicebase.h"
  12 #include "vdevicebuz.inc"
  13 #include "vframe.inc"
  14
  15
  16 #define INPUT_BUFFER_SIZE 0x40000
  17
  18 // Let's get real.  The Buz driver doesn't work.  If the buffers overflow
  19 // for enough time it locks up and can't be recovered except by a
  20 // SIGINT and restart.  We need to cascade the buffer reading in another
  21 // ring buffer thread, have it read continuously, and cancel it if it
  22 // dies.  How about if we do this in SCHED_RR and wait for it to die before
  23 // implementing cancellation?
  24
  25
  26 class VDeviceBUZInput : public Thread
  27 {
  28 public:
  29         VDeviceBUZInput(VDeviceBUZ *device);
  30         ~VDeviceBUZInput();
  31         void start();
  32         void run();
  33         void get_buffer(char **ptr, int *size);
  34         void put_buffer();
  35         void increment_counter(int *counter);
  36         void decrement_counter(int *counter);
  37         VDeviceBUZ *device;
  38
  39         char **buffer;
  40         int *buffer_size;
  41         int total_buffers;
  42         int current_inbuffer;
  43         int current_outbuffer;
  44         Sema output_lock;
  45         Mutex buffer_lock;
  46         int done;
  47 };
  48
  49
  50 class VDeviceBUZ : public VDeviceBase
  51 {
  52 public:
  53         VDeviceBUZ(VideoDevice *device);
  54         ~VDeviceBUZ();
  55
  56         friend class VDeviceBUZInput;
  57
  58         int open_input();
  59         int open_output();
  60         int close_all();
  61         int read_buffer(VFrame *frame);
  62         int write_buffer(VFrame **frames, EDL *edl);
  63         int reset_parameters();
  64         ArrayList<int>* get_render_strategies();
  65         int set_channel(Channel *channel);
  66         int get_norm(int norm);
  67         static void get_inputs(ArrayList<char *> *input_sources);
  68         int set_picture(int brightness,
  69                 int hue,
  70                 int color,
  71                 int contrast,
  72                 int whiteness);
  73         int get_best_colormodel(int colormodel);
  74         void create_channeldb(ArrayList<Channel*> *channeldb);
  75         void new_output_buffer(VFrame **outputs, int colormodel);
  76
  77
  78 private:
  79         int open_input_core(Channel *channel);
  80         int close_input_core();
  81         int open_output_core(Channel *channel);
  82         int close_output_core();
  83
  84         int jvideo_fd;
  85         char *input_buffer, *frame_buffer, *output_buffer;
  86         long frame_size, frame_allocated;
  87         int input_error;
  88 //      quicktime_mjpeg_hdr jpeg_header;
  89         long last_frame_no;
  90         ArrayList<int> render_strategies;
  91 // Temporary frame for compressing output data
  92         VFrame *temp_frame;
  93 // Frame given to user to acquire data
  94         VFrame *user_frame;
  95         mjpeg_t *mjpeg;
  96         Mutex tuner_lock;
  97         VDeviceBUZInput *input_thread;
  98
  99     struct buz_params bparm;
 100     struct buz_requestbuffers breq;
 101 // Can't CSYNC the first loop
 102         int total_loops;
 103 // Number of output frame to load
 104         int output_number;
 105 };
 106
 107 #endif