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ffmpeg.wasm-core
Commit 2d6f317d authored by Michael Niedermayer's avatar Michael Niedermayer
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jpegdec: support ilv=1 grayscale jpeg-ls. 

Fixes Ticket851
Signed-off-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parent bbe25b4f
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Showing with 4 additions and 3 deletions
libavcodec/jpeglsdec.c
View file @ 2d6f317d
......@@ -309,11 +309,12 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
} else if(ilv == 1) { /* line interleaving */
int j;
int Rc[3] = {0, 0, 0};
stride = (s->nb_components > 1) ? 3 : 1;
memset(cur, 0, s->picture.linesize[0]);
width = s->width * 3;
width = s->width * stride;
for(i = 0; i < s->height; i++) {
for(j = 0; j < 3; j++) {
ls_decode_line(state, s, last + j, cur + j, Rc[j], width, 3, j, 8);
for(j = 0; j < stride; j++) {
ls_decode_line(state, s, last + j, cur + j, Rc[j], width, stride, j, 8);
Rc[j] = last[j];
if (s->restart_interval && !--s->restart_count) {
......
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