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| author | Pun1sher <70578657+pWNn1sher@users.noreply.github.com> | 2020-11-10 21:23:08 +0530 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-11-10 21:23:08 +0530 |
| commit | ec6a4c92fe4817dd45bf0f7a5d6ad8853a16c6e3 (patch) | |
| tree | b92e1c797f7b7b985dad74e82e1f7715c8a3e87f | |
| parent | 9397a5a272ba0b45bfb5e88b8884e992524786a5 (diff) | |
Checking for half_image_size[ x & y ] to be non-negative.
This make sure that (1x1) , (1 x X) and (X , 1) pixel images using sub-sampling will get correct half_image_size i.e NON-NEGATIVE.
fix : https://github.com/godotengine/godot/issues/42363
| -rw-r--r-- | thirdparty/jpeg-compressor/jpgd.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/thirdparty/jpeg-compressor/jpgd.cpp b/thirdparty/jpeg-compressor/jpgd.cpp index baf6ea0484..d6b5d96aac 100644 --- a/thirdparty/jpeg-compressor/jpgd.cpp +++ b/thirdparty/jpeg-compressor/jpgd.cpp @@ -1669,7 +1669,7 @@ namespace jpgd { int row = m_max_mcu_y_size - m_mcu_lines_left; uint8* d0 = m_pScan_line_0; - const int half_image_x_size = (m_image_x_size >> 1) - 1; + const int half_image_x_size = (m_image_x_size == 1) ? 0 : (m_image_x_size >> 1) - 1; const int row_x8 = row * 8; for (int x = 0; x < m_image_x_size; x++) @@ -1762,7 +1762,7 @@ namespace jpgd { int y = m_image_y_size - m_total_lines_left; int row = y & 15; - const int half_image_y_size = (m_image_y_size >> 1) - 1; + const int half_image_y_size = (m_image_y_size == 1) ? 0 : (m_image_y_size >> 1) - 1; uint8* d0 = m_pScan_line_0; @@ -1891,7 +1891,7 @@ namespace jpgd { int y = m_image_y_size - m_total_lines_left; int row = y & 15; - const int half_image_y_size = (m_image_y_size >> 1) - 1; + const int half_image_y_size = (m_image_y_size == 1) ? 0 : (m_image_y_size >> 1) - 1; uint8* d0 = m_pScan_line_0; @@ -1915,7 +1915,7 @@ namespace jpgd { const int y0_base = (c_y0 & 7) * 8 + 256; const int y1_base = (c_y1 & 7) * 8 + 256; - const int half_image_x_size = (m_image_x_size >> 1) - 1; + const int half_image_x_size = (m_image_x_size == 1) ? 0 : (m_image_x_size >> 1) - 1; static const uint8_t s_muls[2][2][4] = { |