hvirtual/cinelerra/device1394input.h

   1 #ifndef DEVICE1394INPUT_H
   2 #define DEVICE1394INPUT_H
   3
   4
   5
   6 #ifdef HAVE_FIREWIRE
   7
   8 #include "condition.inc"
   9 #include "libdv.h"
  10 #include "mutex.inc"
  11 #include "raw1394.h"
  12 #include "thread.h"
  13 #include "vframe.inc"
  14
  15 // Common 1394 output for audio and video
  16
  17 // Extracts video and audio from the single DV stream
  18 class Device1394Input : public Thread
  19 {
  20 public:
  21         Device1394Input();
  22         ~Device1394Input();
  23
  24         int Device1394Input::open(int port,
  25                 int channel,
  26                 int length,
  27                 int channels,
  28                 int samplerate,
  29                 int bits);
  30         void run();
  31         void increment_counter(int *counter);
  32         void decrement_counter(int *counter);
  33
  34         static int dv_iso_handler(raw1394handle_t handle,
  35                 int channel,
  36                 size_t length,
  37                 quadlet_t *data);
  38         static bus_reset_handler_t dv_reset_handler(raw1394handle_t handle,
  39                 unsigned int generation);
  40
  41 // Read a video frame with timed blocking
  42
  43         int read_video(VFrame *data);
  44
  45
  46 // Read audio with timed blocking
  47
  48         int read_audio(char *data, int samples);
  49
  50 // Storage of currently downloading frame
  51         char *temp;
  52         int bytes_read;
  53
  54 // Storage of all frames
  55         char **buffer;
  56         int *buffer_valid;
  57         int buffer_size;
  58         int total_buffers;
  59         int current_inbuffer;
  60
  61 // For extracting audio
  62         dv_t *decoder;
  63
  64 // Storage of audio data
  65         char *audio_buffer;
  66         int audio_samples;
  67
  68 // number of next video buffer to read
  69         int current_outbuffer;
  70
  71         Mutex *buffer_lock;
  72         Condition *video_lock;
  73         Condition *audio_lock;
  74         int done;
  75
  76         raw1394handle_t handle;
  77         int channel;
  78         int length;
  79         int channels;
  80         int samplerate;
  81         int bits;
  82 };
  83
  84
  85
  86
  87
  88 #endif
  89
  90
  91
  92 #endif