From 331858d0f68324edd17307eee2dcae1abfd5d302 Mon Sep 17 00:00:00 2001 From: Harry Mallon Date: Mon, 7 Dec 2020 10:32:14 +0000 Subject: avcodec/dpx: Fix B&W film scans from Lasergraphics Inc Signed-off-by: Harry Mallon --- libavcodec/dpx.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libavcodec/dpx.c b/libavcodec/dpx.c index 7b18141f97..bd431ccbcb 100644 --- a/libavcodec/dpx.c +++ b/libavcodec/dpx.c @@ -167,7 +167,7 @@ static int decode_frame(AVCodecContext *avctx, int x, y, stride, i, j, ret; int w, h, bits_per_color, descriptor, elements, packing; int yuv, color_trc, color_spec; - int encoding, need_align = 0; + int encoding, need_align = 0, unpadded_10bit = 0; unsigned int rgbBuffer = 0; int n_datum = 0; @@ -574,6 +574,12 @@ static int decode_frame(AVCodecContext *avctx, input_device[32] = '\0'; av_dict_set(&p->metadata, "Input Device", input_device, 0); + // Some devices do not pad 10bit samples to whole 32bit words per row + if (!memcmp(input_device, "Scanity", 7) || + !memcmp(creator, "Lasergraphics Inc.", 18)) { + unpadded_10bit = 1; + } + // Move pointer to offset from start of file buf = avpkt->data + offset; @@ -606,7 +612,7 @@ static int decode_frame(AVCodecContext *avctx, read10in32(&buf, &rgbBuffer, &n_datum, endian, shift); } - if (memcmp(input_device, "Scanity", 7)) + if (!unpadded_10bit) n_datum = 0; for (i = 0; i < elements; i++) ptr[i] += p->linesize[i]; -- cgit v1.2.3