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try jpeg resolution

This commit is contained in:
gb 2022-09-20 12:40:11 +08:00
parent aebdb26ae3
commit d22e44ee6c
1 changed files with 14 additions and 2 deletions
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16
hgdriver/hgdev/image_process.cpp
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@ -1336,12 +1336,22 @@ namespace hg_imgproc
{ {
// MSB word[7] and word[8] are x and y resolutions // MSB word[7] and word[8] are x and y resolutions
std::vector<int> cpr; std::vector<int> cpr;
unsigned short jpeg_r = (resolution << 8) | ((resolution >> 8) & 0x0ff);
cpr.push_back(CV_IMWRITE_JPEG_QUALITY); cpr.push_back(CV_IMWRITE_JPEG_QUALITY);
cpr.push_back((int)(long)conv->dst.fmt.detail); cpr.push_back((int)(long)conv->dst.fmt.detail);
cpr.push_back(CV_IMWRITE_JPEG_RST_INTERVAL);
cpr.push_back(resolution);
if (conv->dst.is_file) if (conv->dst.is_file)
{
cv::imwrite(conv->dst.data, imsg, cpr); cv::imwrite(conv->dst.data, imsg, cpr);
//FILE* f = fopen(conv->dst.data, "rb+");
//if (f)
//{
// fseek(f, 0x0e, SEEK_SET);
// fwrite(&jpeg_r, sizeof(jpeg_r), 1, f);
// fwrite(&jpeg_r, sizeof(jpeg_r), 1, f);
// fclose(f);
//}
}
else else
{ {
std::string tmpf(hg_log::temporary_path() + PATH_SEPARATOR + "imgtrans.tmp"); std::string tmpf(hg_log::temporary_path() + PATH_SEPARATOR + "imgtrans.tmp");
@ -1350,6 +1360,8 @@ namespace hg_imgproc
conv->dst.data = (SANE_String_Const)G4Tiff::load_mini_file(tmpf.c_str(), &bytes, allocate_memory); conv->dst.data = (SANE_String_Const)G4Tiff::load_mini_file(tmpf.c_str(), &bytes, allocate_memory);
conv->dst.data_len = bytes; conv->dst.data_len = bytes;
remove(tmpf.c_str()); remove(tmpf.c_str());
//if (conv->dst.data_len > 0x20)
// ((unsigned short*)conv->dst.data)[7] = ((unsigned short*)conv->dst.data)[8] = jpeg_r;
} }
} }
else if (conv->dst.fmt.compress.compression == SANE_COMPRESSION_GROUP4) else if (conv->dst.fmt.compress.compression == SANE_COMPRESSION_GROUP4)