From 45498caa4935fd6b692e673dca8fab186fe3a468 Mon Sep 17 00:00:00 2001 From: Simon Wenner Date: Thu, 4 Oct 2018 00:12:00 +0200 Subject: load JPG images as rbg instead of rgba, fixes #21867 --- modules/jpg/image_loader_jpegd.cpp | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) (limited to 'modules/jpg') diff --git a/modules/jpg/image_loader_jpegd.cpp b/modules/jpg/image_loader_jpegd.cpp index a49137ae73..24d40111cf 100644 --- a/modules/jpg/image_loader_jpegd.cpp +++ b/modules/jpg/image_loader_jpegd.cpp @@ -48,9 +48,9 @@ Error jpeg_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p const int image_width = decoder.get_width(); const int image_height = decoder.get_height(); - int comps = decoder.get_num_components(); - if (comps == 3) - comps = 4; //weird + const int comps = decoder.get_num_components(); + if (comps != 1 && comps != 3) + return ERR_FILE_CORRUPT; if (decoder.begin_decoding() != jpgd::JPGD_SUCCESS) return ERR_FILE_CORRUPT; @@ -73,7 +73,19 @@ Error jpeg_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p } jpgd::uint8 *pDst = pImage_data + y * dst_bpl; - memcpy(pDst, pScan_line, dst_bpl); + + if (comps == 1) { + memcpy(pDst, pScan_line, dst_bpl); + } else { + // For images with more than 1 channel pScan_line will always point to a buffer + // containing 32-bit RGBA pixels. Alpha is always 255 and we ignore it. + for (int x = 0; x < image_width; x++) { + pDst[0] = pScan_line[x * 4 + 0]; + pDst[1] = pScan_line[x * 4 + 1]; + pDst[2] = pScan_line[x * 4 + 2]; + pDst += 3; + } + } } //all good @@ -82,7 +94,7 @@ Error jpeg_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p if (comps == 1) fmt = Image::FORMAT_L8; else - fmt = Image::FORMAT_RGBA8; + fmt = Image::FORMAT_RGB8; dw = PoolVector::Write(); p_image->create(image_width, image_height, 0, fmt, data); -- cgit v1.2.3