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Code Issues Releases Activity

lavu/hwcontext_vaapi: Use vaMapBuffer2 for mapping image buffers

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This allows some optimizations in driver, such as not having to read
back the data if write-only mapping is requested.
This commit is contained in:
David Rosca 2023-10-27 22:25:50 +02:00 committed by Haihao Xiang
parent 578ac59887
commit 1e2ac489a4
1 changed files with 12 additions and 0 deletions
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12
libavutil/hwcontext_vaapi.c
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@ -809,6 +809,9 @@ static int vaapi_map_frame(AVHWFramesContext *hwfc,
VAStatus vas;
void *address = NULL;
int err, i;
#if VA_CHECK_VERSION(1, 21, 0)
uint32_t vaflags = 0;
#endif
surface_id = (VASurfaceID)(uintptr_t)src->data[3];
av_log(hwfc, AV_LOG_DEBUG, "Map surface %#x.\n", surface_id);
@ -892,7 +895,16 @@ static int vaapi_map_frame(AVHWFramesContext *hwfc,
}
}
#if VA_CHECK_VERSION(1, 21, 0)
if (flags & AV_HWFRAME_MAP_READ)
vaflags |= VA_MAPBUFFER_FLAG_READ;
if (flags & AV_HWFRAME_MAP_WRITE)
vaflags |= VA_MAPBUFFER_FLAG_WRITE;
// On drivers not implementing vaMapBuffer2 libva calls vaMapBuffer instead.
vas = vaMapBuffer2(hwctx->display, map->image.buf, &address, vaflags);
#else
vas = vaMapBuffer(hwctx->display, map->image.buf, &address);
#endif
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to map image from surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));