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fix(jpeg_decoder): Fix jpeg decoder get picture information

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This commit is contained in:
C.S.M 2024-11-19 11:46:55 +08:00
parent fe3bb073f9
commit 65ce617a8d
1 changed files with 21 additions and 14 deletions
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9
components/esp_driver_jpeg/jpeg_decode.c
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@ -145,6 +145,7 @@ esp_err_t jpeg_decoder_get_info(const uint8_t *in_buf, uint32_t inbuf_len, jpeg_
uint8_t thischar = 0;
uint8_t lastchar = 0;
uint8_t hivi = 0;
uint8_t nf = 0;
while (header_info->buffer_left) {
lastchar = thischar;
@ -157,7 +158,8 @@ esp_err_t jpeg_decoder_get_info(const uint8_t *in_buf, uint32_t inbuf_len, jpeg_
height = jpeg_get_bytes(header_info, 2);
width = jpeg_get_bytes(header_info, 2);
jpeg_get_bytes(header_info, 1);
nf = jpeg_get_bytes(header_info, 1);
jpeg_get_bytes(header_info, 1);
hivi = jpeg_get_bytes(header_info, 1);
break;
@ -172,6 +174,7 @@ esp_err_t jpeg_decoder_get_info(const uint8_t *in_buf, uint32_t inbuf_len, jpeg_
picture_info->height = height;
picture_info->width = width;
if (nf == 3) {
switch (hivi) {
case 0x11:
picture_info->sample_method = JPEG_DOWN_SAMPLING_YUV444;
@ -186,6 +189,10 @@ esp_err_t jpeg_decoder_get_info(const uint8_t *in_buf, uint32_t inbuf_len, jpeg_
ESP_LOGE(TAG, "Sampling factor cannot be recognized");
return ESP_ERR_INVALID_STATE;
}
}
if (nf == 1) {
picture_info->sample_method = JPEG_DOWN_SAMPLING_GRAY;
}
free(header_info);
return ESP_OK;