74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
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#include "bindings/videocore/Framebuffer.h"
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#include "py/gc.h"
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#include "py/runtime.h"
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#include "peripherals/broadcom/caches.h"
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#include "peripherals/broadcom/vcmailbox.h"
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void common_hal_videocore_framebuffer_construct(videocore_framebuffer_obj_t *self,
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mp_uint_t width, mp_uint_t height) {
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// These will be modified on success to indicate actual values.
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uint32_t virtual_width = width;
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uint32_t virtual_height = height;
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uint32_t physical_width = width;
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// TODO: Make the FB twice as tall if double buffering.
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uint32_t physical_height = height;
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uint32_t pitch = 0;
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uint32_t bits_per_pixel = 0;
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self->framebuffer = vcmailbox_get_framebuffer(&virtual_width,
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&virtual_height,
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&physical_width,
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&physical_height,
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&pitch,
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&bits_per_pixel);
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if (self->framebuffer == NULL) {
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if (gc_alloc_possible()) {
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mp_raise_ValueError(translate("no fb"));
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} else {
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mp_printf(&mp_plat_print, "no fb\n");
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}
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self->width = 0;
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self->height = 0;
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return;
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}
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self->width = virtual_width;
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self->height = virtual_height;
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self->pitch = pitch;
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}
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void common_hal_videocore_framebuffer_deinit(videocore_framebuffer_obj_t *self) {
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if (vcmailbox_release_framebuffer()) {
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self->framebuffer = NULL;
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}
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}
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bool common_hal_videocore_framebuffer_deinited(videocore_framebuffer_obj_t *self) {
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return self->framebuffer == NULL;
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}
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void common_hal_videocore_framebuffer_refresh(videocore_framebuffer_obj_t *self) {
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data_clean(self->framebuffer, sizeof(uint32_t) * self->width * self->height);
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}
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int common_hal_videocore_framebuffer_get_width(videocore_framebuffer_obj_t *self) {
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return self->width;
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}
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int common_hal_videocore_framebuffer_get_height(videocore_framebuffer_obj_t *self) {
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return self->height;
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}
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mp_int_t common_hal_videocore_framebuffer_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
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videocore_framebuffer_obj_t *self = (videocore_framebuffer_obj_t *)self_in;
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bufinfo->buf = self->framebuffer;
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bufinfo->typecode = 'L';
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bufinfo->len = self->pitch * self->height * sizeof(uint32_t);
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return 0;
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}
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int common_hal_videocore_framebuffer_get_row_stride(videocore_framebuffer_obj_t *self) {
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return self->pitch;
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}
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