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Refactor OSD element display code

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Remove the giant `select` block that contained all the code to generate the elements and transition them to individual functions called only when the element is active. Simplifies the code and results in a performance improvement as it's not necessary to fall through the large `select` statement for every element that will be drawn. The individual functions and the element to function mapping are moved to a new `osd_elements.c` file.

Moved the OSD related code files to a new `osd/` directory.

Also pre-analyze the active elements and only process those that are active. This also saves processing as it's not necessary to loop through all 50 or so elements when only a couple are active.

Various other cleanup and removal of stale or unnecessary code.

In the default configuration the element drawing phase of the OSD task is reduced from ~51us to ~35us - resulting in about a 30% decrease in processing time.
This commit is contained in:
Bruce Luckcuck 2019-02-05 15:20:40 -05:00
parent e053965489
commit 30672a37c5
31 changed files with 2435 additions and 2133 deletions
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8
src/main/msp/msp.c
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@ -85,7 +85,6 @@
#include "io/gps.h"
#include "io/ledstrip.h"
#include "io/motors.h"
#include "io/osd.h"
#include "io/serial.h"
#include "io/serial_4way.h"
#include "io/servos.h"
@ -99,6 +98,9 @@
#include "msp/msp_protocol.h"
#include "msp/msp_serial.h"
#include "osd/osd.h"
#include "osd/osd_elements.h"
#include "pg/beeper.h"
#include "pg/board.h"
#include "pg/gyrodev.h"
@ -2672,8 +2674,7 @@ static mspResult_e mspCommonProcessInCommand(uint8_t cmdMSP, sbuf_t *src, mspPos
// API >= 1.41
// selected OSD profile
#ifdef USE_OSD_PROFILES
osdConfigMutable()->osdProfileIndex = sbufReadU8(src);
setOsdProfile(osdConfig()->osdProfileIndex);
changeOsdProfileIndex(sbufReadU8(src));
#else
sbufReadU8(src);
#endif // USE_OSD_PROFILES
@ -2714,6 +2715,7 @@ static mspResult_e mspCommonProcessInCommand(uint8_t cmdMSP, sbuf_t *src, mspPos
} else if (addr < OSD_ITEM_COUNT) {
/* Set element positions */
osdConfigMutable()->item_pos[addr] = value;
osdAnalyzeActiveElements();
} else {
return MSP_RESULT_ERROR;
}