alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-10-05 04:49:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

rgb_lcd: support yuv converter

Browse Source
This commit is contained in:
morris
2022-08-06 12:44:52 +08:00
parent 104b9c3fb1
commit fc1aa2848b
15 changed files with 345 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
components/esp_lcd/src/esp_lcd_rgb_panel.c
View File

@@ -83,7 +83,8 @@ struct esp_rgb_panel_t {
int panel_id; // LCD panel ID
lcd_hal_context_t hal; // Hal layer object
size_t data_width; // Number of data lines
size_t bits_per_pixel; // Color depth, in bpp
size_t fb_bits_per_pixel; // Frame buffer color depth, in bpp
size_t output_bits_per_pixel; // Color depth seen from the output data line. Default to fb_bits_per_pixel, but can be changed by YUV-RGB conversion
size_t sram_trans_align; // Alignment for framebuffer that allocated in SRAM
size_t psram_trans_align; // Alignment for framebuffer that allocated in PSRAM
int disp_gpio_num; // Display control GPIO, which is used to perform action like "disp_off"
@@ -220,13 +221,13 @@ esp_err_t esp_lcd_new_rgb_panel(const esp_lcd_rgb_panel_config_t *rgb_panel_conf
#endif
// bpp defaults to the number of data lines, but for serial RGB interface, they're not equal
size_t bits_per_pixel = rgb_panel_config->data_width;
size_t fb_bits_per_pixel = rgb_panel_config->data_width;
if (rgb_panel_config->bits_per_pixel) { // override bpp if it's set
bits_per_pixel = rgb_panel_config->bits_per_pixel;
fb_bits_per_pixel = rgb_panel_config->bits_per_pixel;
}
// calculate buffer size
size_t fb_size = rgb_panel_config->timings.h_res * rgb_panel_config->timings.v_res * bits_per_pixel / 8;
size_t bb_size = rgb_panel_config->bounce_buffer_size_px * bits_per_pixel / 8;
size_t fb_size = rgb_panel_config->timings.h_res * rgb_panel_config->timings.v_res * fb_bits_per_pixel / 8;
size_t bb_size = rgb_panel_config->bounce_buffer_size_px * fb_bits_per_pixel / 8;
if (bb_size) {
// we want the bounce can always end in the second buffer
ESP_GOTO_ON_FALSE(fb_size % (2 * bb_size) == 0, ESP_ERR_INVALID_ARG, err, TAG,
@@ -297,7 +298,8 @@ esp_err_t esp_lcd_new_rgb_panel(const esp_lcd_rgb_panel_config_t *rgb_panel_conf
memcpy(rgb_panel->data_gpio_nums, rgb_panel_config->data_gpio_nums, SOC_LCD_RGB_DATA_WIDTH);
rgb_panel->timings = rgb_panel_config->timings;
rgb_panel->data_width = rgb_panel_config->data_width;
rgb_panel->bits_per_pixel = bits_per_pixel;
rgb_panel->fb_bits_per_pixel = fb_bits_per_pixel;
rgb_panel->output_bits_per_pixel = fb_bits_per_pixel; // by default, the output bpp is the same as the frame buffer bpp
rgb_panel->disp_gpio_num = rgb_panel_config->disp_gpio_num;
rgb_panel->flags.disp_en_level = !rgb_panel_config->flags.disp_active_low;
rgb_panel->flags.no_fb = rgb_panel_config->flags.no_fb;
@@ -387,6 +389,57 @@ esp_err_t esp_lcd_rgb_panel_refresh(esp_lcd_panel_handle_t panel)
return ESP_OK;
}
esp_err_t esp_lcd_rgb_panel_set_yuv_conversion(esp_lcd_panel_handle_t panel, const esp_lcd_yuv_conv_config_t *config)
{
ESP_RETURN_ON_FALSE(panel, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
esp_rgb_panel_t *rgb_panel = __containerof(panel, esp_rgb_panel_t, base);
lcd_hal_context_t *hal = &rgb_panel->hal;
bool en_conversion = config != NULL;
// bits per pixel for different YUV sample
const uint8_t bpp_yuv[] = {
[LCD_YUV_SAMPLE_422] = 16,
[LCD_YUV_SAMPLE_420] = 12,
[LCD_YUV_SAMPLE_411] = 12,
};
if (en_conversion) {
if (memcmp(&config->src, &config->dst, sizeof(config->src)) == 0) {
ESP_RETURN_ON_FALSE(false, ESP_ERR_INVALID_ARG, TAG, "conversion source and destination are the same");
}
if (config->src.color_space == LCD_COLOR_SPACE_YUV && config->dst.color_space == LCD_COLOR_SPACE_RGB) { // YUV->RGB
lcd_ll_set_convert_mode_yuv_to_rgb(hal->dev, config->src.yuv_sample);
// Note, the RGB->YUV conversion only support RGB565
rgb_panel->output_bits_per_pixel = 16;
} else if (config->src.color_space == LCD_COLOR_SPACE_RGB && config->dst.color_space == LCD_COLOR_SPACE_YUV) { // RGB->YUV
lcd_ll_set_convert_mode_rgb_to_yuv(hal->dev, config->dst.yuv_sample);
rgb_panel->output_bits_per_pixel = bpp_yuv[config->dst.yuv_sample];
} else if (config->src.color_space == LCD_COLOR_SPACE_YUV && config->dst.color_space == LCD_COLOR_SPACE_YUV) { // YUV->YUV
lcd_ll_set_convert_mode_yuv_to_yuv(hal->dev, config->src.yuv_sample, config->dst.yuv_sample);
rgb_panel->output_bits_per_pixel = bpp_yuv[config->dst.yuv_sample];
} else {
ESP_RETURN_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, TAG, "unsupported conversion mode");
}
// set conversion standard
lcd_ll_set_yuv_convert_std(hal->dev, config->std);
// set conversion data width
lcd_ll_set_convert_data_width(hal->dev, rgb_panel->data_width);
// set color range
lcd_ll_set_input_color_range(hal->dev, config->src.color_range);
lcd_ll_set_output_color_range(hal->dev, config->dst.color_range);
} else {
// output bpp equals to frame buffer bpp
rgb_panel->output_bits_per_pixel = rgb_panel->fb_bits_per_pixel;
}
// enable or disable RGB-YUV conversion
lcd_ll_enable_rgb_yuv_convert(hal->dev, en_conversion);
return ESP_OK;
}
static esp_err_t rgb_panel_del(esp_lcd_panel_t *panel)
{
esp_rgb_panel_t *rgb_panel = __containerof(panel, esp_rgb_panel_t, base);
@@ -425,7 +478,7 @@ static esp_err_t rgb_panel_init(esp_lcd_panel_t *panel)
// configure blank region timing
lcd_ll_set_blank_cycles(rgb_panel->hal.dev, 1, 1); // RGB panel always has a front and back blank (porch region)
lcd_ll_set_horizontal_timing(rgb_panel->hal.dev, rgb_panel->timings.hsync_pulse_width,
rgb_panel->timings.hsync_back_porch, rgb_panel->timings.h_res * rgb_panel->bits_per_pixel / rgb_panel->data_width,
rgb_panel->timings.hsync_back_porch, rgb_panel->timings.h_res * rgb_panel->output_bits_per_pixel / rgb_panel->data_width,
rgb_panel->timings.hsync_front_porch);
lcd_ll_set_vertical_timing(rgb_panel->hal.dev, rgb_panel->timings.vsync_pulse_width,
rgb_panel->timings.vsync_back_porch, rgb_panel->timings.v_res,
@@ -500,7 +553,7 @@ static esp_err_t rgb_panel_draw_bitmap(esp_lcd_panel_t *panel, int x_start, int
y_end = MIN(y_end, v_res);
}
int bytes_per_pixel = rgb_panel->bits_per_pixel / 8;
int bytes_per_pixel = rgb_panel->fb_bits_per_pixel / 8;
int pixels_per_line = rgb_panel->timings.h_res;
uint32_t bytes_per_line = bytes_per_pixel * pixels_per_line;
uint8_t *fb = rgb_panel->fbs[rgb_panel->cur_fb_index];
@@ -862,7 +915,7 @@ static esp_err_t lcd_rgb_panel_select_clock_src(esp_rgb_panel_t *panel, lcd_cloc
static IRAM_ATTR bool lcd_rgb_panel_fill_bounce_buffer(esp_rgb_panel_t *panel, uint8_t *buffer)
{
bool need_yield = false;
int bytes_per_pixel = panel->bits_per_pixel / 8;
int bytes_per_pixel = panel->fb_bits_per_pixel / 8;
if (panel->flags.no_fb) {
if (panel->on_bounce_empty) {
// We don't have a frame buffer here; we need to call a callback to refill the bounce buffer