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dxva: support DXGI_FORMAT_420_OPAQUE decoding

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Some devices (some phones, apparently) will support only this opaque
format. Of course this won't work with CLI, because copying data
directly is not supported.

Automatic frame allocation (setting AVCodecContext.hw_device_ctx) does
not support this mode, even if it's the only supported mode. But since
opaque surfaces are generally less useful, that's probably ok.

Merges Libav commit 5030e3856c.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
wm4 2017-06-22 14:52:56 +02:00
parent 6f5ff3269b
commit 8d7fdba7b8
3 changed files with 25 additions and 4 deletions
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13
libavcodec/dxva2.c
View File

@ -393,19 +393,28 @@ static int d3d11va_get_decoder_configuration(AVCodecContext *avctx,
return ret;
}
static DXGI_FORMAT d3d11va_map_sw_to_hw_format(enum AVPixelFormat pix_fmt)
{
switch (pix_fmt) {
case AV_PIX_FMT_NV12: return DXGI_FORMAT_NV12;
case AV_PIX_FMT_P010: return DXGI_FORMAT_P010;
case AV_PIX_FMT_YUV420P: return DXGI_FORMAT_420_OPAQUE;
default: return DXGI_FORMAT_UNKNOWN;
}
}
static int d3d11va_create_decoder(AVCodecContext *avctx)
{
FFDXVASharedContext *sctx = DXVA_SHARED_CONTEXT(avctx);
GUID *guid_list;
unsigned guid_count, i;
GUID decoder_guid;
DXGI_FORMAT surface_format = avctx->sw_pix_fmt == AV_PIX_FMT_YUV420P10 ?
DXGI_FORMAT_P010 : DXGI_FORMAT_NV12;
D3D11_VIDEO_DECODER_DESC desc = { 0 };
D3D11_VIDEO_DECODER_CONFIG config;
AVHWFramesContext *frames_ctx = (AVHWFramesContext *)avctx->hw_frames_ctx->data;
AVD3D11VADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
AVD3D11VAFramesContext *frames_hwctx = frames_ctx->hwctx;
DXGI_FORMAT surface_format = d3d11va_map_sw_to_hw_format(frames_ctx->sw_format);
D3D11_TEXTURE2D_DESC texdesc;
HRESULT hr;
int ret;

12
libavutil/hwcontext_d3d11va.c
View File

@ -83,8 +83,11 @@ static const struct {
DXGI_FORMAT d3d_format;
enum AVPixelFormat pix_fmt;
} supported_formats[] = {
{ DXGI_FORMAT_NV12, AV_PIX_FMT_NV12 },
{ DXGI_FORMAT_P010, AV_PIX_FMT_P010 },
{ DXGI_FORMAT_NV12, AV_PIX_FMT_NV12 },
{ DXGI_FORMAT_P010, AV_PIX_FMT_P010 },
// Special opaque formats. The pix_fmt is merely a place holder, as the
// opaque format cannot be accessed directly.
{ DXGI_FORMAT_420_OPAQUE, AV_PIX_FMT_YUV420P },
};
static void d3d11va_default_lock(void *ctx)
@ -270,6 +273,7 @@ static int d3d11va_transfer_get_formats(AVHWFramesContext *ctx,
enum AVHWFrameTransferDirection dir,
enum AVPixelFormat **formats)
{
D3D11VAFramesContext *s = ctx->internal->priv;
enum AVPixelFormat *fmts;
fmts = av_malloc_array(2, sizeof(*fmts));
@ -279,6 +283,10 @@ static int d3d11va_transfer_get_formats(AVHWFramesContext *ctx,
fmts[0] = ctx->sw_format;
fmts[1] = AV_PIX_FMT_NONE;
// Don't signal support for opaque formats. Actual access would fail.
if (s->format == DXGI_FORMAT_420_OPAQUE)
fmts[0] = AV_PIX_FMT_NONE;
*formats = fmts;
return 0;

4
libavutil/hwcontext_d3d11va.h
View File

@ -26,6 +26,10 @@
* The default pool implementation will be fixed-size if initial_pool_size is
* set (and allocate elements from an array texture). Otherwise it will allocate
* individual textures. Be aware that decoding requires a single array texture.
*
* Using sw_format==AV_PIX_FMT_YUV420P has special semantics, and maps to
* DXGI_FORMAT_420_OPAQUE. av_hwframe_transfer_data() is not supported for
* this format. Refer to MSDN for details.
*/
#include <d3d11.h>