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avfilter/vsrc_ddagrab: account for mouse-only frames during probing

This commit is contained in:
Timo Rothenpieler 2023-07-14 20:29:22 +02:00
parent 3f345ebf21
commit c433ad89a0
1 changed files with 21 additions and 7 deletions
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28
libavfilter/vsrc_ddagrab.c
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@ -585,7 +585,7 @@ static int update_mouse_pointer(AVFilterContext *avctx, DXGI_OUTDUPL_FRAME_INFO
return 0;
}
static int next_frame_internal(AVFilterContext *avctx, ID3D11Texture2D **desktop_texture)
static int next_frame_internal(AVFilterContext *avctx, ID3D11Texture2D **desktop_texture, int need_frame)
{
DXGI_OUTDUPL_FRAME_INFO frame_info;
DdagrabContext *dda = avctx->priv;
@ -608,18 +608,32 @@ static int next_frame_internal(AVFilterContext *avctx, ID3D11Texture2D **desktop
if (dda->draw_mouse) {
ret = update_mouse_pointer(avctx, &frame_info);
if (ret < 0)
return ret;
goto error;
}
if (need_frame && (!frame_info.LastPresentTime.QuadPart || !frame_info.AccumulatedFrames)) {
ret = AVERROR(EAGAIN);
goto error;
}
hr = IDXGIResource_QueryInterface(desktop_resource, &IID_ID3D11Texture2D, (void**)desktop_texture);
IDXGIResource_Release(desktop_resource);
desktop_resource = NULL;
release_resource(&desktop_resource);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "DXGIResource QueryInterface failed\n");
return AVERROR_EXTERNAL;
ret = AVERROR_EXTERNAL;
goto error;
}
return 0;
error:
release_resource(&desktop_resource);
hr = IDXGIOutputDuplication_ReleaseFrame(dda->dxgi_outdupl);
if (FAILED(hr))
av_log(avctx, AV_LOG_ERROR, "DDA error ReleaseFrame failed!\n");
return ret;
}
static int probe_output_format(AVFilterContext *avctx)
@ -631,7 +645,7 @@ static int probe_output_format(AVFilterContext *avctx)
av_assert1(!dda->probed_texture);
do {
ret = next_frame_internal(avctx, &dda->probed_texture);
ret = next_frame_internal(avctx, &dda->probed_texture, 1);
} while(ret == AVERROR(EAGAIN));
if (ret < 0)
return ret;
@ -918,7 +932,7 @@ static int ddagrab_request_frame(AVFilterLink *outlink)
now -= dda->first_pts;
if (!dda->probed_texture) {
ret = next_frame_internal(avctx, &cur_texture);
ret = next_frame_internal(avctx, &cur_texture, 0);
} else {
cur_texture = dda->probed_texture;
dda->probed_texture = NULL;