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feat(isp): Add example and script to check raw picture by ISP dma input

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Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
gaoxu
2026-07-28 14:37:45 +08:00
committed by Gao Xu
co-authored by Cursor
parent 2a02c7e55c
commit 5dfcc1bc2b
9 changed files with 542 additions and 85 deletions
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examples/peripherals/isp/dma_input/main/CMakeLists.txt
+4
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@@ -1,3 +1,7 @@
idf_component_register(SRCS "isp_dma_main.c"
PRIV_REQUIRES esp_driver_isp esp_mm esp_psram mbedtls
INCLUDE_DIRS ".")
target_add_binary_data(${COMPONENT_LIB}
"${CMAKE_CURRENT_LIST_DIR}/assets/sensor_240x280_bggr.raw"
BINARY RENAME_TO "sensor_raw")
examples/peripherals/isp/dma_input/main/assets/sensor_240x280_bggr.raw
+470
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File diff suppressed because one or more lines are too long
examples/peripherals/isp/dma_input/main/isp_dma_main.c
+12 -37
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@@ -7,7 +7,7 @@
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <assert.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
@@ -19,42 +19,15 @@
#include "driver/isp_core.h"
#include "driver/isp_color.h"
#define EXAMPLE_WIDTH 128
#define EXAMPLE_HEIGHT 96
#define EXAMPLE_WIDTH 240
#define EXAMPLE_HEIGHT 280
#define EXAMPLE_BASE64_CHUNK_LEN 384
#define EXAMPLE_BASE64_DELAY_MS 10
#define EXAMPLE_DMA_ALIGN 64
#define EXAMPLE_FRAME_COUNT 2
#define EXAMPLE_FRAME_COUNT 1
static const uint8_t s_color_bars[8][3] = {
{255, 255, 255}, // white
{255, 255, 0}, // yellow
{ 0, 255, 255}, // cyan
{ 0, 255, 0}, // green
{255, 0, 255}, // magenta
{255, 0, 0}, // red
{ 0, 0, 255}, // blue
{ 0, 0, 0}, // black
};
static void s_generate_raw8_color_bars(uint8_t *raw, uint32_t w, uint32_t h)
{
for (uint32_t y = 0; y < h; y++) {
bool even_row = ((y & 1) == 0);
for (uint32_t x = 0; x < w; x++) {
uint32_t bar = (x * 8) / w;
uint8_t r = s_color_bars[bar][0];
uint8_t g = s_color_bars[bar][1];
uint8_t b = s_color_bars[bar][2];
bool even_col = ((x & 1) == 0);
if (even_row) {
raw[y * w + x] = even_col ? b : g;
} else {
raw[y * w + x] = even_col ? g : r;
}
}
}
}
extern const uint8_t sensor_raw_start[] asm("_binary_sensor_raw_start");
extern const uint8_t sensor_raw_end[] asm("_binary_sensor_raw_end");
static void *s_alloc_dma_buffer(size_t size)
{
@@ -86,7 +59,7 @@ static void s_print_base64_payload(const unsigned char *encoded, size_t encoded_
}
printf("IMAGE_BASE64 %.*s\n", (int)chunk_len, (const char *)&encoded[offset]);
fflush(stdout);
vTaskDelay(pdMS_TO_TICKS(1));
vTaskDelay(pdMS_TO_TICKS(EXAMPLE_BASE64_DELAY_MS));
}
printf("IMAGE_BASE64_END\n");
fflush(stdout);
@@ -120,6 +93,10 @@ void app_main(void)
uint8_t *isp_out_buf = s_alloc_dma_buffer(out_size);
assert(isp_in_buf && isp_out_buf);
size_t embedded_raw_size = sensor_raw_end - sensor_raw_start;
assert(embedded_raw_size == in_size);
memcpy(isp_in_buf, sensor_raw_start, embedded_raw_size);
size_t encoded_len = 0;
int ret = mbedtls_base64_encode(NULL, 0, &encoded_len, isp_out_buf, out_size);
ESP_ERROR_CHECK((ret == MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL) ? ESP_OK : ESP_FAIL);
@@ -128,8 +105,6 @@ void app_main(void)
printf("Feeding %d frames through ISP DMA input...\n", EXAMPLE_FRAME_COUNT);
for (int frame = 0; frame < EXAMPLE_FRAME_COUNT; frame++) {
s_generate_raw8_color_bars(isp_in_buf, h_res, v_res);
ESP_ERROR_CHECK(esp_cache_msync(isp_in_buf, in_size, ESP_CACHE_MSYNC_FLAG_DIR_C2M));
ESP_ERROR_CHECK(esp_isp_dma_process_frame(isp_proc, isp_out_buf, isp_in_buf, 1000));
ESP_ERROR_CHECK(esp_cache_msync(isp_out_buf, out_size, ESP_CACHE_MSYNC_FLAG_DIR_M2C));