WildMidi_GetInfo man page

WildMidi_GetInfo — get information on a midi

Library

libWildMidi

Synopsis

#include <wildmidi_lib.h>

struct _WM_Info *WildMidi_GetInfo (midi *handle);

Description

Obtains information allowing you to determine song position, current options, and any copyright information.

handle
The identifier obtained from opening a midi file with WildMidi_Open(3) or WildMidi_OpenBuffer(3)

Return Value

On error returns NULL with an error message displayed to stderr.

Otherwise returns a pointer to a struct containing the information.

struct _WM_Info {
   char *copyright;
   uint32_t current_sample;
   uint32_t approx_total_samples;
   uint32_t total_midi_time;
   uint16_t mixer_options;
   uint32_t total_midi_time;
};
copyright
A pointer to a \0 terminated string containing any copyright MIDI events found while processing the MIDI file handle refers to. If more than one copyright event was found then each one is separated by \n

If copyright is NULL then no copyright MIDI events were found.

current_sample
This is the number of stereo samples libWildMidi has processed for the MIDI file referred to by handle. You can use this value to determine the current playing time by dividing this value by the rate given when libWildMidi was initialized by WildMidi_Init(3).
approx_total_samples
This is the total number of stereo samples libWildMidi expects to process. This can be used to obtain the total playing time by dividing this value by the rate given when libWildMidi was initialized by WildMidi_Init(3). Also when you divide current_sample by this value and multiplying by 100, you have the percentage currently processed.
total_midi_time
This is the total time of MIDI events in 1/1000's of a second. It differs from approx_total_samples in that it only states the total time within the MIDI file and does not take into account the extra bit of time to finish playing sampling smoothly.
mixer_options
WM_MO_LOG_VOLUME
Using curved volume settings instead of linear ones.
WM_MO_ENHANCED_RESAMPLING
The enhanced resampler is active
WM_MO_REVERB
Reverb is being added to the final output.

See Also

WildMidi_GetVersion(3), WildMidi_Init(3), WildMidi_MasterVolume(3), WildMidi_Open(3), WildMidi_OpenBuffer(3), WildMidi_SetOption(3), WildMidi_GetOutput(3), WildMidi_GetMidiOutput(3), WildMidi_FastSeek(3), WildMidi_Close(3), WildMidi_Shutdown(3), wildmidi.cfg(5)

Author

Chris Ison <chrisisonwildcode@gmail.com> Bret Curtis <psi29a@gmail.com>

Referenced By

WildMidi_ClearError(3), WildMidi_Close(3), WildMidi_ConvertBufferToMidi(3), WildMidi_ConvertToMidi(3), WildMidi_FastSeek(3), WildMidi_GetError(3), WildMidi_GetMidiOutput(3), WildMidi_GetOutput(3), WildMidi_GetString(3), WildMidi_GetVersion(3), WildMidi_Init(3), WildMidi_MasterVolume(3), WildMidi_Open(3), WildMidi_OpenBuffer(3), WildMidi_SetCvtOption(3), WildMidi_SetOption(3), WildMidi_Shutdown(3), WildMidi_SongSeek(3).

10 March 2016 WildMidi Programmer's Manual