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camera: add camera_get_scaled_resolution

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This commit is contained in:
Kamil Trzcinski
2023-02-23 11:10:15 +01:00
parent b1c6fb33ec
commit c139a13ec2
3 changed files with 53 additions and 30 deletions
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56
device/camera/camera_rescaller.c
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@ -12,12 +12,41 @@
#define MAX_RESCALLER_SIZE 1920
unsigned camera_rescaller_align_size(unsigned size)
static unsigned camera_rescaller_align_size(unsigned size)
{
size = (size + 31) / 32 * 32;
if (size > MAX_RESCALLER_SIZE)
return MAX_RESCALLER_SIZE;
return size;
return (size + 31) / 32 * 32;
}
static void camera_get_scaled_resolution2(unsigned in_width, unsigned in_height, unsigned proposed_height, unsigned *target_width, unsigned *target_height)
{
proposed_height = MIN(proposed_height, in_height);
*target_height = camera_rescaller_align_size(proposed_height);
*target_height = MIN(*target_height, MAX_RESCALLER_SIZE);
// maintain aspect ratio on target width
*target_width = camera_rescaller_align_size(*target_height * in_width / in_height);
// if width is larger then rescaller, try to maintain scale down height
if (*target_width > MAX_RESCALLER_SIZE) {
*target_width = MAX_RESCALLER_SIZE;
*target_height = camera_rescaller_align_size(*target_width * in_height / in_width);
}
}
bool camera_get_scaled_resolution(camera_t *camera, camera_output_options_t *options, buffer_format_t *format)
{
if (options->disabled)
return false;
camera_get_scaled_resolution2(
camera->options.width,
camera->options.height,
options->height,
&format->width,
&format->height
);
return true;
}
buffer_list_t *camera_try_rescaller(camera_t *camera, buffer_list_t *src_capture, const char *name, unsigned target_height, unsigned target_format)
@ -29,15 +58,10 @@ buffer_list_t *camera_try_rescaller(camera_t *camera, buffer_list_t *src_capture
}
if (target_height > src_capture->fmt.height) {
LOG_INFO(src_capture, "Upscaling from %dp to %dp does not make sense.",
src_capture->fmt.height, target_height);
return NULL;
LOG_INFO(src_capture, "Upscaling from %dp to %dp does not make sense. Lowering to %dp.",
src_capture->fmt.height, target_height, src_capture->fmt.height);
}
target_height = camera_rescaller_align_size(target_height);
unsigned target_width = target_height * src_capture->fmt.width / src_capture->fmt.height;
target_width = camera_rescaller_align_size(target_width);
char name2[256];
sprintf(name2, "RESCALLER:%s", name);
@ -47,11 +71,15 @@ buffer_list_t *camera_try_rescaller(camera_t *camera, buffer_list_t *src_capture
device, src_capture);
buffer_format_t target_fmt = {
.width = target_width,
.height = target_height,
.format = target_format
};
camera_get_scaled_resolution2(
src_capture->fmt.width, src_capture->fmt.height,
target_height,
&target_fmt.width, &target_fmt.height
);
buffer_list_t *rescaller_capture = device_open_buffer_list_capture(
device, NULL, rescaller_output, target_fmt, true);