apps/rbcodecconfig.h

   1 #ifndef RBCODECCONFIG_H_INCLUDED
   2 #define RBCODECCONFIG_H_INCLUDED
   3
   4 #include "config.h"
   5
   6 #ifndef __ASSEMBLER__
   7
   8 /* NULL, offsetof, size_t */
   9 #include <stddef.h>
  10
  11 /* ssize_t, off_t, open, close, read, lseek, SEEK_SET, SEEK_CUR, SEEK_END,
  12  * O_RDONLY, O_WRONLY, O_CREAT, O_APPEND, MAX_PATH, filesize */
  13 #include "file.h"
  14
  15 /* {,u}int{8,16,32,64}_t, , intptr_t, uintptr_t, bool, true, false, swap16,
  16  * swap32, hto{be,le}{16,32}, {be,le}toh{16,32}, ROCKBOX_{BIG,LITTLE}_ENDIAN,
  17  * {,U}INT{8,16,32,64}_{MIN,MAX} */
  18 #include "system.h"
  19
  20 /* Structure to record some info during processing call */
  21 struct dsp_loop_context
  22 {
  23     long last_yield;
  24 #ifdef CPU_COLDFIRE
  25     unsigned long old_macsr;
  26 #endif
  27 };
  28
  29 static inline void dsp_process_start(struct dsp_loop_context *ctx)
  30 {
  31     /* At least perform one yield before starting */
  32     ctx->last_yield = current_tick;
  33     yield();
  34 #if defined(CPU_COLDFIRE)
  35     /* set emac unit for dsp processing, and save old macsr, we're running in
  36        codec thread context at this point, so can't clobber it */
  37     ctx->old_macsr = coldfire_get_macsr();
  38     coldfire_set_macsr(EMAC_FRACTIONAL | EMAC_SATURATE);
  39 #endif
  40 }
  41
  42 static inline void dsp_process_loop(struct dsp_loop_context *ctx)
  43 {
  44     /* Yield at least once each tick */
  45     long tick = current_tick;
  46     if (TIME_AFTER(tick, ctx->last_yield))
  47     {
  48         ctx->last_yield = tick;
  49         yield();
  50     }
  51 }
  52
  53 static inline void dsp_process_end(struct dsp_loop_context *ctx)
  54 {
  55 #if defined(CPU_COLDFIRE)
  56     /* set old macsr again */
  57     coldfire_set_macsr(ctx->old_macsr);
  58 #endif
  59     (void)ctx;
  60 }
  61
  62 #define DSP_PROCESS_START() \
  63     struct dsp_loop_context __ctx; \
  64     dsp_process_start(&__ctx)
  65
  66 #define DSP_PROCESS_LOOP() \
  67     dsp_process_loop(&__ctx)
  68
  69 #define DSP_PROCESS_END() \
  70     dsp_process_end(&__ctx)
  71
  72 #endif
  73
  74 #endif