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| author | Nicolas George <george@nsup.org> | 2020-02-17 12:59:27 +0100 |
|---|---|---|
| committer | Nicolas George <george@nsup.org> | 2020-02-20 14:37:11 +0100 |
| commit | 26ae9c9f8aebbf4b925649f971f90c0dee047aa9 (patch) | |
| tree | db52318cf76df8b6a340107cfc429159540dcec4 /libavdevice | |
| parent | fbb36d74ac6c491cdde552863981a593059e94b7 (diff) | |
| download | ffmpeg-26ae9c9f8aebbf4b925649f971f90c0dee047aa9.tar.gz | |
lavd/opengl_enc: check strings before parsing them.
Fix a segfault if OpenGL was not initialized before calling
write_header().
Diffstat (limited to 'libavdevice')
| -rw-r--r-- | libavdevice/opengl_enc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavdevice/opengl_enc.c b/libavdevice/opengl_enc.c index fa94345a7c..b07f9c2e43 100644 --- a/libavdevice/opengl_enc.c +++ b/libavdevice/opengl_enc.c @@ -588,6 +588,10 @@ static av_cold int opengl_read_limits(AVFormatContext *h) version = glGetString(GL_VERSION); extensions = glGetString(GL_EXTENSIONS); + if (!version || !extensions) { + av_log(h, AV_LOG_ERROR, "No OpenGL context initialized for the current thread\n"); + return AVERROR(ENOSYS); + } av_log(h, AV_LOG_DEBUG, "OpenGL version: %s\n", version); sscanf(version, "%d.%d", &major, &minor); |