esp-idf/components/hal/jpeg_hal.c

109 lines
3.8 KiB
C

/*
* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stddef.h>
#include "hal/jpeg_hal.h"
#include "hal/jpeg_ll.h"
void jpeg_hal_init(jpeg_hal_context_t *hal)
{
hal->dev = JPEG_LL_GET_HW();
}
void jpeg_hal_deinit(jpeg_hal_context_t *hal)
{
hal->dev = NULL;
}
/*-----------------------------------------------------------------------*/
/* Config huffman code tables with a DHT segment */
/*-----------------------------------------------------------------------*/
static void jpeg_hal_create_minicode_tbl(uint8_t *huffbits, uint32_t *huffmin, uint32_t *tmp_huff)
{
int total_len = 0;
/* Re-build huffman code word table */
for (int j = 0, i = 0, hc = 0; i < JPEG_HUFFMAN_BITS_LEN_TABLE_LEN; i++, hc <<= 1) {
int b = huffbits[i];
// If a codeword length does not exist, the configuration value is 0xFFFF.
if (huffbits[i] == 0) {
huffmin[i] = 0xffff;
continue;
}
total_len += huffbits[i];
while (b--) {
tmp_huff[j++] = hc++;
}
if (huffbits[i] != 0) {
huffmin[i] = tmp_huff[total_len - huffbits[i]];
huffmin[i] <<= (15 - i);
}
}
}
void jpeg_hal_config_ac0_table(jpeg_hal_context_t *hal, uint8_t *huffbits, uint8_t *huffcode, uint32_t *tmp_huff)
{
uint32_t huffmin[JPEG_HUFFMAN_AC_VALUE_TABLE_LEN] = {};
jpeg_hal_create_minicode_tbl(huffbits, huffmin, tmp_huff);
jpeg_ll_dht_ac0_write_codeword(hal->dev, huffbits, huffmin);
jpeg_ll_dht_ac0_write_value(hal->dev, huffcode);
}
void jpeg_hal_config_ac1_table(jpeg_hal_context_t *hal, uint8_t *huffbits, uint8_t *huffcode, uint32_t *tmp_huff)
{
uint32_t huffmin[JPEG_HUFFMAN_AC_VALUE_TABLE_LEN] = {};
jpeg_hal_create_minicode_tbl(huffbits, huffmin, tmp_huff);
jpeg_ll_dht_ac1_write_codeword(hal->dev, huffbits, huffmin);
jpeg_ll_dht_ac1_write_value(hal->dev, huffcode);
}
void jpeg_hal_config_dc0_table(jpeg_hal_context_t *hal, uint8_t *huffbits, uint8_t *huffcode, uint32_t *tmp_huff)
{
uint32_t huffmin[JPEG_HUFFMAN_AC_VALUE_TABLE_LEN] = {};
jpeg_hal_create_minicode_tbl(huffbits, huffmin, tmp_huff);
jpeg_ll_dht_dc0_write_codeword(hal->dev, huffbits, huffmin);
jpeg_ll_dht_dc0_write_value(hal->dev, huffcode);
}
void jpeg_hal_config_dc1_table(jpeg_hal_context_t *hal, uint8_t *huffbits, uint8_t *huffcode, uint32_t *tmp_huff)
{
uint32_t huffmin[JPEG_HUFFMAN_AC_VALUE_TABLE_LEN] = {};
jpeg_hal_create_minicode_tbl(huffbits, huffmin, tmp_huff);
jpeg_ll_dht_dc1_write_codeword(hal->dev, huffbits, huffmin);
jpeg_ll_dht_dc1_write_value(hal->dev, huffcode);
}
jpeg_config_dht_table_t dht_func[DHT_TC_NUM][DHT_TH_NUM] = {
{jpeg_hal_config_dc0_table, jpeg_hal_config_dc1_table},
{jpeg_hal_config_ac0_table, jpeg_hal_config_ac1_table},
};
jpeg_config_frame_info_t sof_func[JPEG_COMPONENT_NUMBER_MAX] = {
jpeg_ll_set_frame_info_component0,
jpeg_ll_set_frame_info_component1,
jpeg_ll_set_frame_info_component2,
jpeg_ll_set_frame_info_component3,
};
jpeg_config_quantization_coefficient_t dqt_func[JPEG_COMPONENT_NUMBER_MAX] = {
jpeg_ll_write_quantization_coefficient_t0,
jpeg_ll_write_quantization_coefficient_t1,
jpeg_ll_write_quantization_coefficient_t2,
jpeg_ll_write_quantization_coefficient_t3,
};
void jpeg_hal_set_quantization_coefficient(jpeg_hal_context_t *hal, uint32_t *lqnr, uint32_t *cqnr)
{
jpeg_ll_set_access_qnr_ram_mode(hal->dev, 1);
jpeg_ll_luminance_qnr_table_id(hal->dev, 0);
jpeg_ll_chrominance_qnr_table_id(hal->dev, 1);
jpeg_ll_write_quantization_coefficient_t0(hal->dev, lqnr);
jpeg_ll_write_quantization_coefficient_t1(hal->dev, cqnr);
jpeg_ll_write_quantization_coefficient_t2(hal->dev, lqnr);
jpeg_ll_write_quantization_coefficient_t3(hal->dev, cqnr);
}