cinelerra/arender.h

   1 #ifndef ARENDER_H
   2 #define ARENDER_H
   3
   4 #include "atrack.inc"
   5 #include "commonrender.h"
   6 #include "maxchannels.h"
   7
   8 class ARender : public CommonRender
   9 {
  10 public:
  11         ARender(RenderEngine *renderengine);
  12         ~ARender();
  13
  14         void arm_command();
  15         void init_output_buffers();
  16         VirtualConsole* new_vconsole_object();
  17         int get_total_tracks();
  18         Module* new_module(Track *track);
  19
  20 // set up and start thread
  21         int arm_playback(int64_t current_position,
  22                                 int64_t input_length,
  23                                 int64_t module_render_fragment,
  24                                 int64_t playback_buffer,
  25                                 int64_t output_length);
  26         int wait_for_startup();
  27         int64_t tounits(double position, int round);
  28         double fromunits(int64_t position);
  29
  30         void run();
  31 // Calculate number of samples in each meter fragment and how many
  32 // meter fragments to buffer.
  33         int calculate_history_size();
  34 // Get subscript of history entry corresponding to sample
  35         int get_history_number(int64_t *table, int64_t position);
  36
  37 // output buffers for audio device
  38         double *audio_out[MAXCHANNELS];
  39 // information for meters
  40         int get_next_peak(int current_peak);
  41 // samples to use for one meter update.  Must be multiple of fragment_len
  42         int64_t meter_render_fragment;
  43 // Level history of output buffers
  44         double *level_history[MAXCHANNELS];
  45 // sample position of each level
  46         int64_t *level_samples;
  47 // total entries in level_history
  48         int total_peaks;
  49 // Next level to store value in
  50         int current_level[MAXCHANNELS];
  51 // Make VirtualAConsole block before the first buffer until video is ready
  52         int first_buffer;
  53
  54
  55
  56
  57
  58
  59
  60 // get the data type for certain commonrender routines
  61         int get_datatype();
  62
  63 // handle playback autos and transitions
  64 //      int restart_playback();
  65 //      int send_reconfigure_buffer();
  66
  67 // process a buffer
  68 // renders into buffer_out argument when no audio device
  69 // handles playback autos
  70         int process_buffer(double **buffer_out, int64_t input_len, int64_t input_position, int last_buffer);
  71 // renders to a device when there's a device
  72         int process_buffer(int64_t input_len, int64_t input_position);
  73
  74         void send_last_buffer();
  75         int wait_device_completion();
  76
  77 // reverse the data in a buffer
  78         int reverse_buffer(double *buffer, int64_t len);
  79 // advance the buffer count
  80         int swap_current_buffer();
  81         int64_t get_render_length(int64_t current_render_length);
  82
  83 //      int64_t playback_buffer;            // maximum length to send to audio device
  84 //      int64_t output_length;              // maximum length to send to audio device after speed
  85
  86
  87         int64_t source_length;  // Total number of frames to render for transitions
  88
  89
  90 private:
  91 // initialize buffer_out
  92         int init_meters();
  93 // Samples since start of playback
  94         int64_t session_position;
  95 };
  96
  97
  98
  99 #endif