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decode chunks and calculate checksums

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This commit is contained in:
ocpalo 2022-08-31 20:39:19 +03:00
parent 5185544864
commit c4a6e1fd4d
1 changed files with 4 additions and 4 deletions
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8
modules/imgcodecs/src/grfmt_spng.cpp
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@ -121,7 +121,6 @@ bool SPngDecoder::readHeader()
}
m_ctx = ctx;
spng_set_crc_action(ctx, SPNG_CRC_USE, SPNG_CRC_USE);
if (!m_buf.empty())
spng_set_png_stream((struct spng_ctx *)m_ctx, (spng_rw_fn *)readDataFromBuf, this);
@ -336,7 +335,7 @@ bool SPngDecoder::readData(Mat &img)
else
{
AutoBuffer<unsigned char> imageBuffer(image_size);
spng_decode_image(png_ptr, imageBuffer.data(), image_size, fmt, 0);
ret = spng_decode_image(png_ptr, imageBuffer.data(), image_size, fmt, 0);
int step = m_width * img.channels();
if (fmt == SPNG_FMT_RGB8)
{
@ -469,16 +468,17 @@ bool SPngDecoder::readData(Mat &img)
if (ret == SPNG_EOI)
{
ret = spng_decode_chunks(png_ptr);
if(ret == SPNG_OK) result = true;
struct spng_exif exif_s{};
ret = spng_get_exif(png_ptr, &exif_s);
if (ret == SPNG_OK)
{
if (exif_s.data && exif_s.length > 0)
{
m_exif.parseExif((unsigned char *)exif_s.data, exif_s.length);
result = m_exif.parseExif((unsigned char *)exif_s.data, exif_s.length);
}
}
result = true;
}
}
}