[FFmpeg-devel] [PATCH 1/2] vaapi: don't unmap non-existing buffer

[Joakim Plate]

Some h264's can end up calling ff_vaapi_render_picture after a seek
with no buffer allocated and vaUnmapBuffer will assert on a invalid
buffer.
---
 libavcodec/vaapi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/vaapi.c b/libavcodec/vaapi.c
index a220a9d..3e203d6 100644
--- a/libavcodec/vaapi.c
+++ b/libavcodec/vaapi.c
@@ -46,8 +46,10 @@ int ff_vaapi_render_picture(struct vaapi_context *vactx, VASurfaceID surface)
     VABufferID va_buffers[3];
     unsigned int n_va_buffers = 0;
 
+    if (vactx->pic_param_buf_id) {
     vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
     va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
+    }
 
     if (vactx->iq_matrix_buf_id) {
         vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
-- 
1.8.2