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Added a utility function to calculate the next power of 2 for a value

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Sam Lantinga
2022-07-17 08:31:16 -07:00
parent 90b86b132a
commit b299cb3d3c
13 changed files with 105 additions and 40 deletions
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9
src/audio/SDL_audio.c
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@@ -27,6 +27,7 @@
#include "SDL_audio_c.h"
#include "SDL_sysaudio.h"
#include "../thread/SDL_systhread.h"
#include "../SDL_utils_c.h"
#define _THIS SDL_AudioDevice *_this
@@ -1417,13 +1418,7 @@ open_audio_device(const char *devname, int iscapture,
* value we got from 'desired' and round up to the nearest value
*/
if (!current_audio.impl.SupportsNonPow2Samples && device->spec.samples > 0) {
device->spec.samples -= 1;
device->spec.samples |= device->spec.samples >> 1;
device->spec.samples |= device->spec.samples >> 2;
device->spec.samples |= device->spec.samples >> 4;
device->spec.samples |= device->spec.samples >> 8;
device->spec.samples |= device->spec.samples >> 16;
device->spec.samples += 1;
device->spec.samples = SDL_powerof2(device->spec.samples);
}
if (current_audio.impl.OpenDevice(device, devname) < 0) {