Max5 API Reference

00001 #include "ext_critical.h"
00002 #include "ext_atomic.h"
00003 
00004 #if C74_PRAGMA_STRUCT_PACKPUSH
00005     #pragma pack(push, 2)
00006 #elif C74_PRAGMA_STRUCT_PACK
00007     #pragma pack(2)
00008 #endif
00009 
00010 enum {
00011     MAXCHAN = 4
00012 };
00013 
00014 enum {
00015     bi_basefreq = 0,
00016     bi_detune,
00017     bi_lowfreq,
00018     bi_hifreq,
00019     bi_lowvel,
00020     bi_hivel,
00021     bi_gain,
00022     bi_numparams
00023 };
00024 
00025 
00026 /** Data structure for the buffer~ object.
00027     @ingroup buffers
00028 */
00029 typedef struct _buffer
00030 {
00031     t_object b_obj;     ///< doesn't have any signals so it doesn't need to be pxobject
00032     long b_valid;       ///< flag is off during read replacement or editing operation
00033     float *b_samples;   ///< stored with interleaved channels if multi-channel
00034     long b_frames;      ///< number of sample frames (each one is sizeof(float) * b_nchans bytes)
00035     long b_nchans;      ///< number of channels
00036     long b_size;        ///< size of buffer in floats
00037     float b_sr;         ///< sampling rate of the buffer
00038     float b_1oversr;    ///< 1 / sr
00039     float b_msr;        ///< sr * .001
00040     // Mac-specific stuff
00041     float *b_memory;    ///< pointer to where memory starts (initial padding for interp)
00042     t_symbol *b_name;   ///< name of the buffer
00043     short b_vol;
00044     short b_space;
00045     // looping info (from AIFF file)
00046     long b_susloopstart;    ///< looping info (from AIFF file) in samples
00047     long b_susloopend;      ///< looping info (from AIFF file) in samples
00048     long b_relloopstart;    ///< looping info (from AIFF file) in samples
00049     long b_relloopend;      ///< looping info (from AIFF file) in samples
00050     // instrument info (from AIFF file)
00051     short b_inst[bi_numparams];
00052     // window stuff
00053     void *b_wind;
00054     double b_pixperfr;
00055     double b_frperpix;
00056     long b_imagesize;
00057     Point b_scroll;
00058     long b_scrollscale;
00059     long b_selbegin[MAXCHAN];
00060     long b_selend[MAXCHAN];
00061     long b_zoom;
00062     long b_zim[11];
00063     void *b_mouseout;
00064     long b_format;          ///< 'AIFF' or 'Sd2f'
00065     t_symbol *b_filename;   ///< last file read (not written) for readagain message
00066     long b_oldnchans;       ///< used for resizing window in case of # of channels change
00067     void *b_doneout;
00068     long b_outputbytes;     ///< number of bytes used for output sample (1-4)
00069     long b_modtime;         ///< last modified time ("dirty" method)
00070     struct _buffer *b_peer; ///< objects that share this symbol (used as a link in the peers)
00071     Boolean b_owner;        ///< b_memory/b_samples "owned" by this object
00072     long b_outputfmt;       ///< sample type (A_LONG, A_FLOAT, etc.)
00073     t_int32_atomic b_inuse; ///< objects that use buffer should ATOMIC_INCREMENT / ATOMIC_DECREMENT this in their perform
00074     void *b_dspchain;       ///< dspchain used for this instance
00075 } t_buffer;
00076 
00077 #define BUFWIND(x) ((t_wind *)(x->b_wind))
00078 
00079 #if C74_PRAGMA_STRUCT_PACKPUSH
00080     #pragma pack(pop)
00081 #elif C74_PRAGMA_STRUCT_PACK
00082     #pragma pack()
00083 #endif
buffer.h
