feat(dsi): can use gray8 image as input

Author: suda-morris

.pre-commit-config.yaml

@@ -31,6 +31,7 @@ repos:
             .*.pb-c.c|
             .*.yuv|
             .*.rgb|
+            .*.gray|
             .*COPYING.*|
             docs/sphinx-known-warnings\.txt
           )$

components/esp_lcd/test_apps/mipi_dsi_lcd/CMakeLists.txt

@@ -9,6 +9,8 @@ project(mipi_dsi_lcd_panel_test)
 
 target_add_binary_data(mipi_dsi_lcd_panel_test.elf "resources/pictures/hello.yuv" BINARY)
 target_add_binary_data(mipi_dsi_lcd_panel_test.elf "resources/pictures/world.yuv" BINARY)
+target_add_binary_data(mipi_dsi_lcd_panel_test.elf "resources/pictures/hello.gray" BINARY)
+target_add_binary_data(mipi_dsi_lcd_panel_test.elf "resources/pictures/world.gray" BINARY)
 
 idf_build_get_property(elf EXECUTABLE)
 if(CONFIG_COMPILER_DUMP_RTL_FILES)

components/esp_lcd/test_apps/mipi_dsi_lcd/main/test_mipi_dsi_panel.c

@@ -88,7 +88,7 @@ TEST_CASE("MIPI DSI Pattern Generator (EK79007)", "[mipi_dsi]")
 
 #define TEST_IMG_SIZE (100 * 100 * sizeof(uint16_t))
 
-TEST_CASE("MIPI DSI draw bitmap (EK79007)", "[mipi_dsi]")
+TEST_CASE("MIPI DSI draw RGB bitmap (EK79007)", "[mipi_dsi]")
 {
     esp_lcd_dsi_bus_handle_t mipi_dsi_bus;
     esp_lcd_panel_io_handle_t mipi_dbi_io;
@@ -162,7 +162,7 @@ TEST_CASE("MIPI DSI draw bitmap (EK79007)", "[mipi_dsi]")
     test_bsp_disable_dsi_phy_power();
 }
 
-TEST_CASE("MIPI DSI with multiple frame buffers (EK79007)", "[mipi_dsi]")
+TEST_CASE("MIPI DSI use multiple frame buffers (EK79007)", "[mipi_dsi]")
 {
     esp_lcd_dsi_bus_handle_t mipi_dsi_bus;
     esp_lcd_panel_io_handle_t mipi_dbi_io;
@@ -241,17 +241,14 @@ TEST_CASE("MIPI DSI with multiple frame buffers (EK79007)", "[mipi_dsi]")
     test_bsp_disable_dsi_phy_power();
 }
 
-TEST_CASE("MIPI DSI draw YUV422 (EK79007)", "[mipi_dsi]")
+TEST_CASE("MIPI DSI draw YUV422 image (EK79007)", "[mipi_dsi]")
 {
     esp_lcd_dsi_bus_handle_t mipi_dsi_bus;
     esp_lcd_panel_io_handle_t mipi_dbi_io;
     esp_lcd_panel_handle_t mipi_dpi_panel;
 
     test_bsp_enable_dsi_phy_power();
 
-    uint8_t *img = malloc(TEST_IMG_SIZE);
-    TEST_ASSERT_NOT_NULL(img);
-
     esp_lcd_dsi_bus_config_t bus_config = {
         .bus_id = 0,
         .num_data_lanes = 2,
@@ -285,10 +282,6 @@ TEST_CASE("MIPI DSI draw YUV422 (EK79007)", "[mipi_dsi]")
             .vsync_pulse_width = MIPI_DSI_LCD_VSYNC,
             .vsync_front_porch = MIPI_DSI_LCD_VFP,
         },
-
-        .flags = {
-            .use_dma2d = true,
-        }
     };
     ek79007_vendor_config_t vendor_config = {
         .mipi_config = {
@@ -333,7 +326,84 @@ TEST_CASE("MIPI DSI draw YUV422 (EK79007)", "[mipi_dsi]")
     TEST_ESP_OK(esp_lcd_panel_del(mipi_dpi_panel));
     TEST_ESP_OK(esp_lcd_panel_io_del(mipi_dbi_io));
     TEST_ESP_OK(esp_lcd_del_dsi_bus(mipi_dsi_bus));
-    free(img);
+
+    test_bsp_disable_dsi_phy_power();
+}
+
+TEST_CASE("MIPI DSI draw Gray8 image (EK79007)", "[mipi_dsi]")
+{
+    esp_lcd_dsi_bus_handle_t mipi_dsi_bus;
+    esp_lcd_panel_io_handle_t mipi_dbi_io;
+    esp_lcd_panel_handle_t mipi_dpi_panel;
+
+    test_bsp_enable_dsi_phy_power();
+
+    esp_lcd_dsi_bus_config_t bus_config = {
+        .bus_id = 0,
+        .num_data_lanes = 2,
+        .lane_bit_rate_mbps = 1000, // 1000 Mbps
+    };
+    TEST_ESP_OK(esp_lcd_new_dsi_bus(&bus_config, &mipi_dsi_bus));
+
+    esp_lcd_dbi_io_config_t dbi_config = {
+        .virtual_channel = 0,
+        .lcd_cmd_bits = 8,
+        .lcd_param_bits = 8,
+    };
+    TEST_ESP_OK(esp_lcd_new_panel_io_dbi(mipi_dsi_bus, &dbi_config, &mipi_dbi_io));
+
+    esp_lcd_dpi_panel_config_t dpi_config = {
+        .dpi_clk_src = MIPI_DSI_DPI_CLK_SRC_DEFAULT,
+        .dpi_clock_freq_mhz = MIPI_DSI_DPI_CLK_MHZ,
+        .virtual_channel = 0,
+
+        // Gray8 -> RGB888
+        .in_color_format = LCD_COLOR_FMT_GRAY8,
+        .out_color_format = LCD_COLOR_FMT_RGB888,
+
+        .video_timing = {
+            .h_size = MIPI_DSI_LCD_H_RES,
+            .v_size = MIPI_DSI_LCD_V_RES,
+            .hsync_back_porch = MIPI_DSI_LCD_HBP,
+            .hsync_pulse_width = MIPI_DSI_LCD_HSYNC,
+            .hsync_front_porch = MIPI_DSI_LCD_HFP,
+            .vsync_back_porch = MIPI_DSI_LCD_VBP,
+            .vsync_pulse_width = MIPI_DSI_LCD_VSYNC,
+            .vsync_front_porch = MIPI_DSI_LCD_VFP,
+        },
+    };
+    ek79007_vendor_config_t vendor_config = {
+        .mipi_config = {
+            .dsi_bus = mipi_dsi_bus,
+            .dpi_config = &dpi_config,
+        },
+    };
+    esp_lcd_panel_dev_config_t lcd_dev_config = {
+        .reset_gpio_num = -1,
+        .rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
+        .bits_per_pixel = 24,
+        .vendor_config = &vendor_config,
+    };
+    TEST_ESP_OK(esp_lcd_new_panel_ek79007(mipi_dbi_io, &lcd_dev_config, &mipi_dpi_panel));
+
+    TEST_ESP_OK(esp_lcd_panel_reset(mipi_dpi_panel));
+    TEST_ESP_OK(esp_lcd_panel_init(mipi_dpi_panel));
+
+    // YUV images are embedded in the firmware binary
+    extern const uint8_t image_hello_gray_start[] asm("_binary_hello_gray_start");
+    extern const uint8_t image_world_gray_start[] asm("_binary_world_gray_start");
+
+    printf("Draw Gray8 images\r\n");
+    for (int i = 0; i < 4; i++) {
+        TEST_ESP_OK(esp_lcd_panel_draw_bitmap(mipi_dpi_panel, 0, 0, 320, 320, image_hello_gray_start));
+        vTaskDelay(pdMS_TO_TICKS(1000));
+        TEST_ESP_OK(esp_lcd_panel_draw_bitmap(mipi_dpi_panel, 0, 0, 320, 320, image_world_gray_start));
+        vTaskDelay(pdMS_TO_TICKS(1000));
+    }
+
+    TEST_ESP_OK(esp_lcd_panel_del(mipi_dpi_panel));
+    TEST_ESP_OK(esp_lcd_panel_io_del(mipi_dbi_io));
+    TEST_ESP_OK(esp_lcd_del_dsi_bus(mipi_dsi_bus));
 
     test_bsp_disable_dsi_phy_power();
 }

components/esp_lcd/test_apps/mipi_dsi_lcd/resources/README.md

@@ -1,7 +1,7 @@
-# How to generate the YUV image from the PNG image
+# How to get a YUV image from a PNG image
 
 ```bash
-ffmpeg -i hello.png -pix_fmt yuyv422 hello.yuv
+ffmpeg -i hello.png -pix_fmt yuyv422 -f rawvideo hello.yuv
 ```
 
 ## Supported YUV422 packing order
@@ -11,3 +11,9 @@ ffmpeg -i hello.png -pix_fmt yuyv422 hello.yuv
 | yuyv422  | 3              | 16             | 8-8-8      |
 | yvyu422  | 3              | 16             | 8-8-8      |
 | uyvy422  | 3              | 16             | 8-8-8      |
+
+# How to get a gray8 raw image from a PNG image
+
+```bash
+ffmpeg -i hello.png -vf format=gray -pix_fmt gray -f rawvideo hello.gray
+```

components/esp_lcd/test_apps/mipi_dsi_lcd/resources/pictures/hello.gray

@@ -361,6 +361,10 @@ static inline void mipi_dsi_brg_ll_set_input_color_format(dsi_brg_dev_t *dev, lc
         dev->pixel_type.raw_type = 9;
         dev->pixel_type.data_in_type = 1;
         break;
+    case LCD_COLOR_FMT_GRAY8:
+        dev->pixel_type.raw_type = 12;
+        dev->pixel_type.data_in_type = 0;
+        break;
     default:
         abort();
     }

components/esp_lcd/test_apps/mipi_dsi_lcd/resources/pictures/world.gray

@@ -56,6 +56,7 @@ typedef enum {
     LCD_COLOR_FMT_RGB666 = COLOR_TYPE_ID(COLOR_SPACE_RGB, COLOR_PIXEL_RGB666), ///< RGB666
     LCD_COLOR_FMT_RGB888 = COLOR_TYPE_ID(COLOR_SPACE_RGB, COLOR_PIXEL_RGB888), ///< RGB888
     LCD_COLOR_FMT_YUV422 = COLOR_TYPE_ID(COLOR_SPACE_YUV, COLOR_PIXEL_YUV422), ///< YUV422
+    LCD_COLOR_FMT_GRAY8  = COLOR_TYPE_ID(COLOR_SPACE_GRAY, COLOR_PIXEL_GRAY8), ///< 8-bit gray scale
 } lcd_color_format_t;
 
 /**