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