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Switched the camera format to use framerate ratio instead of interval ratio

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This is more intuitive for game developers and users.

Fixes https://github.com/libsdl-org/SDL/issues/9896
This commit is contained in:
Sam Lantinga
2024-06-16 18:12:38 -07:00
parent ea8df46575
commit d7391394d3
10 changed files with 60 additions and 64 deletions
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5
src/camera/pipewire/SDL_camera_pipewire.c
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@@ -517,7 +517,7 @@ static int PIPEWIRECAMERA_OpenDevice(SDL_CameraDevice *device, const SDL_CameraS
SPA_FORMAT_VIDEO_format, SPA_POD_Id(sdl_format_to_id(spec->format)),
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&SPA_RECTANGLE(spec->width, spec->height)),
SPA_FORMAT_VIDEO_framerate,
SPA_POD_Fraction(&SPA_FRACTION(spec->interval_numerator, spec->interval_denominator)));
SPA_POD_Fraction(&SPA_FRACTION(spec->framerate_numerator, spec->framerate_denominator)));
if ((res = PIPEWIRE_pw_stream_connect(device->hidden->stream,
PW_DIRECTION_INPUT,
@@ -625,8 +625,7 @@ static void collect_rates(CameraFormatAddData *data, struct param *p, SDL_PixelF
SPA_FALLTHROUGH;
case SPA_CHOICE_Enum:
for (i = 0; i < n_vals; i++) {
// denom and num are switched, because SDL expects an interval, while pw provides a rate
if (SDL_AddCameraFormat(data, sdlfmt, colorspace, size->width, size->height, rates[i].denom, rates[i].num) < 0) {
if (SDL_AddCameraFormat(data, sdlfmt, colorspace, size->width, size->height, rates[i].num, rates[i].denom) < 0) {
return; // Probably out of memory; we'll go with what we have, if anything.
}
}