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Use precise time for gif timing

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This commit is contained in:
James R 2020-11-07 01:32:25 -08:00
parent 84ce53db60
commit e5f37523b8
1 changed files with 6 additions and 6 deletions
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12
src/m_anigif.c
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@ -18,7 +18,7 @@
#include "z_zone.h" #include "z_zone.h"
#include "v_video.h" #include "v_video.h"
#include "i_video.h" #include "i_video.h"
#include "i_system.h" // I_GetTimeMicros #include "i_system.h" // I_GetPreciseTime
#include "m_misc.h" #include "m_misc.h"
#include "st_stuff.h" // st_palette #include "st_stuff.h" // st_palette
@ -47,8 +47,8 @@ static RGBA_t *gif_framepalette = NULL;
static FILE *gif_out = NULL; static FILE *gif_out = NULL;
static INT32 gif_frames = 0; static INT32 gif_frames = 0;
static UINT32 gif_prevframeus = 0; // "us" is microseconds static precise_t gif_prevframetime = 0;
static UINT32 gif_delayus = 0; static UINT32 gif_delayus = 0; // "us" is microseconds
static UINT8 gif_writeover = 0; static UINT8 gif_writeover = 0;
@ -601,7 +601,7 @@ static void GIF_framewrite(void)
if (gif_dynamicdelay) { if (gif_dynamicdelay) {
// golden's attempt at creating a "dynamic delay" // golden's attempt at creating a "dynamic delay"
UINT16 mingifdelay = 10; // minimum gif delay in milliseconds (keep at 10 because gifs can't get more precise). UINT16 mingifdelay = 10; // minimum gif delay in milliseconds (keep at 10 because gifs can't get more precise).
gif_delayus += (I_GetTimeMicros() - gif_prevframeus); // increase delay by how much time was spent between last measurement gif_delayus += I_PreciseToMicros(I_GetPreciseTime() - gif_prevframetime); // increase delay by how much time was spent between last measurement
if (gif_delayus/1000 >= mingifdelay) // delay is big enough to be able to effect gif frame delay? if (gif_delayus/1000 >= mingifdelay) // delay is big enough to be able to effect gif frame delay?
{ {
@ -695,7 +695,7 @@ static void GIF_framewrite(void)
} }
fwrite(gifframe_data, 1, (p - gifframe_data), gif_out); fwrite(gifframe_data, 1, (p - gifframe_data), gif_out);
++gif_frames; ++gif_frames;
gif_prevframeus = I_GetTimeMicros(); gif_prevframetime = I_GetPreciseTime();
} }
@ -723,7 +723,7 @@ INT32 GIF_open(const char *filename)
GIF_headwrite(); GIF_headwrite();
gif_frames = 0; gif_frames = 0;
gif_prevframeus = I_GetTimeMicros(); gif_prevframetime = I_GetPreciseTime();
gif_delayus = 0; gif_delayus = 0;
return 1; return 1;
} }