[FFmpeg-trac] #8970(swscale:new): swscale crash
FFmpeg
trac at avcodec.org
Tue Nov 10 16:37:53 EET 2020
#8970: swscale crash
---------------------------------+--------------------------------------
Reporter: dajuric | Type: defect
Status: new | Priority: important
Component: swscale | Version: git-master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
---------------------------------+--------------------------------------
Program is crashing when using swscale (yuv420p->bgr24) on an target image
with alignment 1. The underlying OS is Ubuntu 18.04LTS Server edition. The
code is working fine on Windows 10, Ubuntu18.04LTS Desktop, OSX.
{{{
#include <libswscale/swscale.h>
#include <libavutil/imgutils.h>
typedef unsigned char byte;
void yuv420ToBgr24(uint8_t* srcData[4], int srcStride[4], uint8_t*
tgtData[4], int tgtStride[4], int w, int h)
{
struct SwsContext* context = sws_getContext(w, h,
AV_PIX_FMT_YUV420P,
w, h,
AV_PIX_FMT_BGR24,
SWS_FAST_BILINEAR
| SWS_BITEXACT, NULL, NULL, NULL);
{
sws_scale(context,
srcData, srcStride, 0, h,
tgtData, tgtStride);
}
sws_freeContext(context);
}
void main()
{
int w = 854; int h = 400;
uint8_t* yuvData[4]; int yuvStride[4];
av_image_alloc(yuvData, yuvStride, w, h, AV_PIX_FMT_YUV420P, 16);
uint8_t* bgrData[4]; int bgrStride[4];
av_image_alloc(bgrData, bgrStride, w, h, AV_PIX_FMT_BGR24, 1);
//if align is 1 then segfault is obtained
yuv420ToBgr24(yuvData, yuvStride, bgrData, bgrStride, w, h);
printf("done\n");
}
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8970>
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