cinelerra/wavecache.h

   1 #ifndef WAVECACHE_H
   2 #define WAVECACHE_H
   3
   4
   5
   6 // Store audio waveform fragments for drawing.
   7 #include "cachebase.h"
   8
   9
  10 class WaveCacheItem : public CacheItemBase
  11 {
  12 public:
  13         WaveCacheItem();
  14         ~WaveCacheItem();
  15
  16         int get_size();
  17
  18         int channel;
  19 // End sample in asset samplerate.  Starting point is CacheItemBase::position
  20         int64_t end;
  21         double high;
  22         double low;
  23 };
  24
  25
  26
  27
  28
  29 class WaveCache : public CacheBase
  30 {
  31 public:
  32         WaveCache();
  33         ~WaveCache();
  34
  35 // Returns the first item on or after the start argument or 0 if none found.
  36         WaveCacheItem* get_wave(int asset_id,
  37                 int channel,
  38                 int64_t start,
  39                 int64_t end);
  40 // Put waveform segment into cache
  41         void put_wave(Asset *asset,
  42                 int channel,
  43                 int64_t start,
  44                 int64_t end,
  45                 double high,
  46                 double low);
  47 };
  48
  49
  50
  51 #endif