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Code Issues Releases Activity

hwcontext_d3d11va: allocate staging texture lazily

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Makes dealing with formats that can not be used for staging textures
easier (DXGI_FORMAT_420_OPAQUE). It also saves memory if the staging
texture is never needed, so this is a good thing.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
wm4 2017-06-22 14:52:55 +02:00 committed by Luca Barbato
parent 086321c612
commit 98d73e4174
1 changed files with 34 additions and 12 deletions
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46
libavutil/hwcontext_d3d11va.c
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@ -239,17 +239,6 @@ static int d3d11va_frames_init(AVHWFramesContext *ctx)
}
}
texDesc.ArraySize = 1;
texDesc.Usage = D3D11_USAGE_STAGING;
texDesc.BindFlags = 0;
texDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
texDesc.MiscFlags = 0;
hr = ID3D11Device_CreateTexture2D(device_hwctx->device, &texDesc, NULL, &s->staging_texture);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Could not create the staging texture (%lx)\n", (long)hr);
return AVERROR_UNKNOWN;
}
ctx->internal->pool_internal = av_buffer_pool_init2(sizeof(AVD3D11FrameDescriptor),
ctx, d3d11va_pool_alloc, NULL);
if (!ctx->internal->pool_internal)
@ -295,6 +284,31 @@ static int d3d11va_transfer_get_formats(AVHWFramesContext *ctx,
return 0;
}
static int d3d11va_create_staging_texture(AVHWFramesContext *ctx)
{
AVD3D11VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
D3D11VAFramesContext *s = ctx->internal->priv;
HRESULT hr;
D3D11_TEXTURE2D_DESC texDesc = {
.Width = ctx->width,
.Height = ctx->height,
.MipLevels = 1,
.Format = s->format,
.SampleDesc = { .Count = 1 },
.ArraySize = 1,
.Usage = D3D11_USAGE_STAGING,
.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE,
};
hr = ID3D11Device_CreateTexture2D(device_hwctx->device, &texDesc, NULL, &s->staging_texture);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Could not create the staging texture (%lx)\n", (long)hr);
return AVERROR_UNKNOWN;
}
return 0;
}
static void fill_texture_ptrs(uint8_t *data[4], int linesize[4],
AVHWFramesContext *ctx,
D3D11_TEXTURE2D_DESC *desc,
@ -320,7 +334,7 @@ static int d3d11va_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
// (The interface types are compatible.)
ID3D11Resource *texture = (ID3D11Resource *)(ID3D11Texture2D *)frame->data[0];
int index = (intptr_t)frame->data[1];
ID3D11Resource *staging = (ID3D11Resource *)s->staging_texture;
ID3D11Resource *staging;
int w = FFMIN(dst->width, src->width);
int h = FFMIN(dst->height, src->height);
uint8_t *map_data[4];
@ -334,6 +348,14 @@ static int d3d11va_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
device_hwctx->lock(device_hwctx->lock_ctx);
if (!s->staging_texture) {
int res = d3d11va_create_staging_texture(ctx);
if (res < 0)
return res;
}
staging = (ID3D11Resource *)s->staging_texture;
ID3D11Texture2D_GetDesc(s->staging_texture, &desc);
if (download) {