diff options
Diffstat (limited to 'main/display.c')
| -rw-r--r-- | main/display.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/main/display.c b/main/display.c index a1a64fd..21e8e5e 100644 --- a/main/display.c +++ b/main/display.c @@ -249,6 +249,44 @@ esp_err_t display_fill(uint16_t rgb565) PANEL_H_ACTIVE, PANEL_V_ACTIVE, fb); } +esp_err_t display_present_rgb565(const uint16_t *src, + uint16_t src_w, + uint16_t src_h) +{ + if (!s_up) return ESP_ERR_INVALID_STATE; + + viewport_state_lock(); + viewport_orientation_t orient = viewport_state_get()->orientation; + viewport_state_unlock(); + + void *fb = NULL; + esp_err_t err = esp_lcd_dpi_panel_get_frame_buffer(s_panel, 1, &fb); + if (err != ESP_OK) return err; + uint16_t *dst = (uint16_t *)fb; + + if (orient == VIEWPORT_ORIENTATION_LANDSCAPE) { + if (src_w != PANEL_H_ACTIVE || src_h != PANEL_V_ACTIVE) + return ESP_ERR_INVALID_SIZE; + memcpy(dst, src, (size_t)src_w * src_h * sizeof(uint16_t)); + } else { + // Portrait: src is 480x800, rotate 90° CW into the 800x480 panel. + // dst dims = src_h x src_w. dst_stride = src_h. + // src(x,y) -> dst(x, src_h - 1 - y) + if (src_w != PANEL_V_ACTIVE || src_h != PANEL_H_ACTIVE) + return ESP_ERR_INVALID_SIZE; + const uint16_t dst_stride = src_h; + for (uint16_t y = 0; y < src_h; ++y) { + const uint16_t *srow = src + (size_t)y * src_w; + const uint16_t dst_col = (uint16_t)(src_h - 1 - y); + for (uint16_t x = 0; x < src_w; ++x) { + dst[(size_t)x * dst_stride + dst_col] = srow[x]; + } + } + } + return esp_lcd_panel_draw_bitmap(s_panel, 0, 0, + PANEL_H_ACTIVE, PANEL_V_ACTIVE, fb); +} + esp_err_t display_test_pattern(void) { if (!s_up) return ESP_ERR_INVALID_STATE; |