Fix a segfault if OpenGL was not initialized before calling write_header().
Unified · Split
| @@ -588,6 +588,10 @@ static av_cold int opengl_read_limits(AVFormatContext *h) · 587 unmodified lines | |||
| 588 | 588 | ||
| 589 | version = glGetString(GL_VERSION); | 589 | version = glGetString(GL_VERSION); |
| 590 | extensions = glGetString(GL_EXTENSIONS); | 590 | extensions = glGetString(GL_EXTENSIONS); |
| 591 | if (!version || !extensions) { | ||
| 592 | av_log(h, AV_LOG_ERROR, "No OpenGL context initialized for the current thread\n"); | ||
| 593 | return AVERROR(ENOSYS); | ||
| 594 | } | ||
| 591 | 595 | ||
| 592 | av_log(h, AV_LOG_DEBUG, "OpenGL version: %s\n", version); | 596 | av_log(h, AV_LOG_DEBUG, "OpenGL version: %s\n", version); |
| 593 | sscanf(version, "%d.%d", &major, &minor); | 597 | sscanf(version, "%d.%d", &major, &minor); |