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Merged
tore-espressif merged 1 commit into from
Feb 2, 2026
Merged

refactor(example): Start using esp_new_jpeg #717

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69 changes: 53 additions & 16 deletions examples/display_audio_photo/main/app_disp_fs.c
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
Expand All @@ -22,7 +22,7 @@
#include "bsp/esp-bsp.h"
#include "lvgl.h"
#include "app_disp_fs.h"
#include "jpeg_decoder.h"
#include "esp_jpeg_dec.h"

/* SPIFFS mount root */
#define FS_MNT_PATH BSP_SPIFFS_MOUNT_POINT
Expand Down Expand Up @@ -175,7 +175,7 @@ void app_audio_init(void)
void app_disp_fs_init(void)
{
file_buffer_size = BSP_LCD_H_RES * BSP_LCD_V_RES * sizeof(lv_color_t);
file_buffer = heap_caps_calloc(file_buffer_size, 1, MALLOC_CAP_DEFAULT);
file_buffer = jpeg_calloc_align(file_buffer_size, 16);
assert(file_buffer);

/* Initialize root path */
Expand Down Expand Up @@ -271,25 +271,62 @@ static void show_window(const char *path, app_file_type_t type)
} else if (fs_img) {
ESP_LOGI(TAG, "Decoding JPEG image...");
/* JPEG decode */
esp_jpeg_image_cfg_t jpeg_cfg = {
.indata = (uint8_t *)file_buf,
.indata_size = filesize,
jpeg_dec_handle_t jpeg_dec = NULL;
jpeg_dec_header_info_t out_info;
jpeg_dec_io_t jpeg_io = {
.inbuf = (uint8_t *)file_buf,
.inbuf_len = (int)filesize,
.outbuf = file_buffer,
.outbuf_size = file_buffer_size,
.out_format = JPEG_IMAGE_FORMAT_RGB565,
.out_scale = JPEG_IMAGE_SCALE_0,
.flags = {
};
jpeg_dec_config_t config = DEFAULT_JPEG_DEC_CONFIG();
config.output_type = JPEG_PIXEL_FORMAT_RGB565_LE;
#if CONFIG_LV_COLOR_16_SWAP
.swap_color_bytes = 1,
config.output_type = JPEG_PIXEL_FORMAT_RGB565_BE;
#endif
}
};
esp_jpeg_image_output_t outimg;
esp_jpeg_decode(&jpeg_cfg, &outimg);

lv_canvas_set_buffer(fs_img, file_buffer, outimg.width, outimg.height, LV_COLOR_FORMAT_RGB565);
jpeg_error_t ret = jpeg_dec_open(&config, &jpeg_dec);
if (ret != JPEG_ERR_OK) {
ESP_LOGE(TAG, "JPEG decoder open failed: %d", ret);
lv_label_set_text(label, "JPEG decoder open failed!");
goto jpeg_decode_cleanup;
}

ret = jpeg_dec_parse_header(jpeg_dec, &jpeg_io, &out_info);
if (ret != JPEG_ERR_OK) {
ESP_LOGE(TAG, "JPEG header parse failed: %d", ret);
lv_label_set_text(label, "JPEG header parse failed!");
goto jpeg_decode_cleanup;
}

int outbuf_len = 0;
ret = jpeg_dec_get_outbuf_len(jpeg_dec, &outbuf_len);
if (ret != JPEG_ERR_OK || outbuf_len <= 0) {
ESP_LOGE(TAG, "JPEG out buffer size failed: %d", ret);
lv_label_set_text(label, "JPEG buffer size error!");
goto jpeg_decode_cleanup;
}

if ((size_t)outbuf_len > file_buffer_size) {
ESP_LOGE(TAG, "JPEG buffer too small: need %d, have %u", outbuf_len, (unsigned)file_buffer_size);
lv_label_set_text(label, "JPEG image too large!");
goto jpeg_decode_cleanup;
}

ret = jpeg_dec_process(jpeg_dec, &jpeg_io);
if (ret != JPEG_ERR_OK) {
ESP_LOGE(TAG, "JPEG decode failed: %d", ret);
lv_label_set_text(label, "JPEG decode failed!");
goto jpeg_decode_cleanup;
}

lv_canvas_set_buffer(fs_img, file_buffer, out_info.width, out_info.height, LV_COLOR_FORMAT_RGB565);
lv_obj_center(fs_img);
lv_obj_invalidate(fs_img);

jpeg_decode_cleanup:
if (jpeg_dec) {
jpeg_dec_close(jpeg_dec);
}
}

close(f);
Expand Down
2 changes: 1 addition & 1 deletion examples/display_audio_photo/main/idf_component.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -4,4 +4,4 @@ dependencies:
bsp_selector:
version: '*'
override_path: ../../../components/bsp_selector
esp_jpeg: '*'
esp_new_jpeg: '^1'
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