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ffmpeg/libavutil/hwcontext_d3d11va.c

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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <windows.h>
// Include thread.h before redefining _WIN32_WINNT, to get
// the right implementation for AVOnce
#include "thread.h"
#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0600
#endif
#define COBJMACROS
#include <initguid.h>
#include <d3d11.h>
#include <dxgi1_2.h>
#if HAVE_DXGIDEBUG_H
#include <dxgidebug.h>
#endif
#include "avassert.h"
#include "common.h"
#include "hwcontext.h"
#include "hwcontext_d3d11va.h"
#include "hwcontext_internal.h"
#include "imgutils.h"
#include "pixdesc.h"
#include "pixfmt.h"
typedef HRESULT(WINAPI *PFN_CREATE_DXGI_FACTORY)(REFIID riid, void **ppFactory);
static AVOnce functions_loaded = AV_ONCE_INIT;
static PFN_CREATE_DXGI_FACTORY mCreateDXGIFactory;
static PFN_D3D11_CREATE_DEVICE mD3D11CreateDevice;
static av_cold void load_functions(void)
{
#if !HAVE_UWP
// We let these "leak" - this is fine, as unloading has no great benefit, and
// Windows will mark a DLL as loaded forever if its internal refcount overflows
// from too many LoadLibrary calls.
HANDLE d3dlib, dxgilib;
d3dlib = LoadLibrary("d3d11.dll");
dxgilib = LoadLibrary("dxgi.dll");
if (!d3dlib || !dxgilib)
return;
mD3D11CreateDevice = (PFN_D3D11_CREATE_DEVICE) GetProcAddress(d3dlib, "D3D11CreateDevice");
mCreateDXGIFactory = (PFN_CREATE_DXGI_FACTORY) GetProcAddress(dxgilib, "CreateDXGIFactory");
#else
// In UWP (which lacks LoadLibrary), CreateDXGIFactory isn't available,
// only CreateDXGIFactory1
mD3D11CreateDevice = (PFN_D3D11_CREATE_DEVICE) D3D11CreateDevice;
mCreateDXGIFactory = (PFN_CREATE_DXGI_FACTORY) CreateDXGIFactory1;
#endif
}
typedef struct D3D11VAFramesContext {
int nb_surfaces_used;
DXGI_FORMAT format;
ID3D11Texture2D *staging_texture;
} D3D11VAFramesContext;
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 },
// 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)
{
WaitForSingleObjectEx(ctx, INFINITE, FALSE);
}
static void d3d11va_default_unlock(void *ctx)
{
ReleaseMutex(ctx);
}
static void d3d11va_frames_uninit(AVHWFramesContext *ctx)
{
AVD3D11VAFramesContext *frames_hwctx = ctx->hwctx;
D3D11VAFramesContext *s = ctx->internal->priv;
if (frames_hwctx->texture)
ID3D11Texture2D_Release(frames_hwctx->texture);
frames_hwctx->texture = NULL;
if (s->staging_texture)
ID3D11Texture2D_Release(s->staging_texture);
s->staging_texture = NULL;
}
static void free_texture(void *opaque, uint8_t *data)
{
ID3D11Texture2D_Release((ID3D11Texture2D *)opaque);
}
static AVBufferRef *wrap_texture_buf(ID3D11Texture2D *tex, int index)
{
AVBufferRef *buf;
AVD3D11FrameDescriptor *desc = av_mallocz(sizeof(*desc));
if (!desc) {
ID3D11Texture2D_Release(tex);
return NULL;
}
desc->texture = tex;
desc->index = index;
buf = av_buffer_create((uint8_t *)desc, sizeof(desc), free_texture, tex, 0);
if (!buf) {
ID3D11Texture2D_Release(tex);
av_free(desc);
return NULL;
}
return buf;
}
static AVBufferRef *d3d11va_alloc_single(AVHWFramesContext *ctx)
{
D3D11VAFramesContext *s = ctx->internal->priv;
AVD3D11VAFramesContext *hwctx = ctx->hwctx;
AVD3D11VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
HRESULT hr;
ID3D11Texture2D *tex;
D3D11_TEXTURE2D_DESC texDesc = {
.Width = ctx->width,
.Height = ctx->height,
.MipLevels = 1,
.Format = s->format,
.SampleDesc = { .Count = 1 },
.ArraySize = 1,
.Usage = D3D11_USAGE_DEFAULT,
.BindFlags = hwctx->BindFlags,
.MiscFlags = hwctx->MiscFlags,
};
hr = ID3D11Device_CreateTexture2D(device_hwctx->device, &texDesc, NULL, &tex);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Could not create the texture (%lx)\n", (long)hr);
return NULL;
}
return wrap_texture_buf(tex, 0);
}
static AVBufferRef *d3d11va_pool_alloc(void *opaque, int size)
{
AVHWFramesContext *ctx = (AVHWFramesContext*)opaque;
D3D11VAFramesContext *s = ctx->internal->priv;
AVD3D11VAFramesContext *hwctx = ctx->hwctx;
D3D11_TEXTURE2D_DESC texDesc;
if (!hwctx->texture)
return d3d11va_alloc_single(ctx);
ID3D11Texture2D_GetDesc(hwctx->texture, &texDesc);
if (s->nb_surfaces_used >= texDesc.ArraySize) {
av_log(ctx, AV_LOG_ERROR, "Static surface pool size exceeded.\n");
return NULL;
}
ID3D11Texture2D_AddRef(hwctx->texture);
return wrap_texture_buf(hwctx->texture, s->nb_surfaces_used++);
}
static int d3d11va_frames_init(AVHWFramesContext *ctx)
{
AVD3D11VAFramesContext *hwctx = ctx->hwctx;
AVD3D11VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
D3D11VAFramesContext *s = ctx->internal->priv;
int i;
HRESULT hr;
D3D11_TEXTURE2D_DESC texDesc;
for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
if (ctx->sw_format == supported_formats[i].pix_fmt) {
s->format = supported_formats[i].d3d_format;
break;
}
}
if (i == FF_ARRAY_ELEMS(supported_formats)) {
av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format: %s\n",
av_get_pix_fmt_name(ctx->sw_format));
return AVERROR(EINVAL);
}
texDesc = (D3D11_TEXTURE2D_DESC){
.Width = ctx->width,
.Height = ctx->height,
.MipLevels = 1,
.Format = s->format,
.SampleDesc = { .Count = 1 },
.ArraySize = ctx->initial_pool_size,
.Usage = D3D11_USAGE_DEFAULT,
.BindFlags = hwctx->BindFlags,
.MiscFlags = hwctx->MiscFlags,
};
if (hwctx->texture) {
D3D11_TEXTURE2D_DESC texDesc2;
ID3D11Texture2D_GetDesc(hwctx->texture, &texDesc2);
if (texDesc.Width != texDesc2.Width ||
texDesc.Height != texDesc2.Height ||
texDesc.Format != texDesc2.Format) {
av_log(ctx, AV_LOG_ERROR, "User-provided texture has mismatching parameters\n");
return AVERROR(EINVAL);
}
} else if (texDesc.ArraySize > 0) {
hr = ID3D11Device_CreateTexture2D(device_hwctx->device, &texDesc, NULL, &hwctx->texture);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Could not create the 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)
return AVERROR(ENOMEM);
return 0;
}
static int d3d11va_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
{
AVD3D11FrameDescriptor *desc;
frame->buf[0] = av_buffer_pool_get(ctx->pool);
if (!frame->buf[0])
return AVERROR(ENOMEM);
desc = (AVD3D11FrameDescriptor *)frame->buf[0]->data;
frame->data[0] = (uint8_t *)desc->texture;
frame->data[1] = (uint8_t *)desc->index;
frame->format = AV_PIX_FMT_D3D11;
frame->width = ctx->width;
frame->height = ctx->height;
return 0;
}
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));
if (!fmts)
return AVERROR(ENOMEM);
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;
}
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,
D3D11_MAPPED_SUBRESOURCE *map)
{
int i;
for (i = 0; i < 4; i++)
linesize[i] = map->RowPitch;
av_image_fill_pointers(data, ctx->sw_format, desc->Height,
(uint8_t*)map->pData, linesize);
}
static int d3d11va_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src)
{
AVD3D11VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
D3D11VAFramesContext *s = ctx->internal->priv;
int download = src->format == AV_PIX_FMT_D3D11;
const AVFrame *frame = download ? src : dst;
const AVFrame *other = download ? dst : src;
// (The interface types are compatible.)
ID3D11Resource *texture = (ID3D11Resource *)(ID3D11Texture2D *)frame->data[0];
int index = (intptr_t)frame->data[1];
ID3D11Resource *staging;
int w = FFMIN(dst->width, src->width);
int h = FFMIN(dst->height, src->height);
uint8_t *map_data[4];
int map_linesize[4];
D3D11_TEXTURE2D_DESC desc;
D3D11_MAPPED_SUBRESOURCE map;
HRESULT hr;
if (frame->hw_frames_ctx->data != (uint8_t *)ctx || other->format != ctx->sw_format)
return AVERROR(EINVAL);
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) {
ID3D11DeviceContext_CopySubresourceRegion(device_hwctx->device_context,
staging, 0, 0, 0, 0,
texture, index, NULL);
hr = ID3D11DeviceContext_Map(device_hwctx->device_context,
staging, 0, D3D11_MAP_READ, 0, &map);
if (FAILED(hr))
goto map_failed;
fill_texture_ptrs(map_data, map_linesize, ctx, &desc, &map);
av_image_copy(dst->data, dst->linesize, map_data, map_linesize,
ctx->sw_format, w, h);
ID3D11DeviceContext_Unmap(device_hwctx->device_context, staging, 0);
} else {
hr = ID3D11DeviceContext_Map(device_hwctx->device_context,
staging, 0, D3D11_MAP_WRITE, 0, &map);
if (FAILED(hr))
goto map_failed;
fill_texture_ptrs(map_data, map_linesize, ctx, &desc, &map);
av_image_copy(map_data, map_linesize, src->data, src->linesize,
ctx->sw_format, w, h);
ID3D11DeviceContext_Unmap(device_hwctx->device_context, staging, 0);
ID3D11DeviceContext_CopySubresourceRegion(device_hwctx->device_context,
texture, index, 0, 0, 0,
staging, 0, NULL);
}
device_hwctx->unlock(device_hwctx->lock_ctx);
return 0;
map_failed:
av_log(ctx, AV_LOG_ERROR, "Unable to lock D3D11VA surface (%lx)\n", (long)hr);
device_hwctx->unlock(device_hwctx->lock_ctx);
return AVERROR_UNKNOWN;
}
static int d3d11va_device_init(AVHWDeviceContext *hwdev)
{
AVD3D11VADeviceContext *device_hwctx = hwdev->hwctx;
HRESULT hr;
if (!device_hwctx->lock) {
device_hwctx->lock_ctx = CreateMutex(NULL, 0, NULL);
if (device_hwctx->lock_ctx == INVALID_HANDLE_VALUE) {
av_log(NULL, AV_LOG_ERROR, "Failed to create a mutex\n");
return AVERROR(EINVAL);
}
device_hwctx->lock = d3d11va_default_lock;
device_hwctx->unlock = d3d11va_default_unlock;
}
if (!device_hwctx->device_context) {
ID3D11Device_GetImmediateContext(device_hwctx->device, &device_hwctx->device_context);
if (!device_hwctx->device_context)
return AVERROR_UNKNOWN;
}
if (!device_hwctx->video_device) {
hr = ID3D11DeviceContext_QueryInterface(device_hwctx->device, &IID_ID3D11VideoDevice,
(void **)&device_hwctx->video_device);
if (FAILED(hr))
return AVERROR_UNKNOWN;
}
if (!device_hwctx->video_context) {
hr = ID3D11DeviceContext_QueryInterface(device_hwctx->device_context, &IID_ID3D11VideoContext,
(void **)&device_hwctx->video_context);
if (FAILED(hr))
return AVERROR_UNKNOWN;
}
return 0;
}
static void d3d11va_device_uninit(AVHWDeviceContext *hwdev)
{
AVD3D11VADeviceContext *device_hwctx = hwdev->hwctx;
if (device_hwctx->device)
ID3D11Device_Release(device_hwctx->device);
if (device_hwctx->device_context)
ID3D11DeviceContext_Release(device_hwctx->device_context);
if (device_hwctx->video_device)
ID3D11VideoDevice_Release(device_hwctx->video_device);
if (device_hwctx->video_context)
ID3D11VideoContext_Release(device_hwctx->video_context);
if (device_hwctx->lock == d3d11va_default_lock)
CloseHandle(device_hwctx->lock_ctx);
}
static int d3d11va_device_create(AVHWDeviceContext *ctx, const char *device,
AVDictionary *opts, int flags)
{
AVD3D11VADeviceContext *device_hwctx = ctx->hwctx;
HRESULT hr;
IDXGIAdapter *pAdapter = NULL;
ID3D10Multithread *pMultithread;
UINT creationFlags = D3D11_CREATE_DEVICE_VIDEO_SUPPORT;
int is_debug = !!av_dict_get(opts, "debug", NULL, 0);
int ret;
// (On UWP we can't check this.)
#if !HAVE_UWP
if (!LoadLibrary("d3d11_1sdklayers.dll"))
is_debug = 0;
#endif
if (is_debug)
creationFlags |= D3D11_CREATE_DEVICE_DEBUG;
if ((ret = ff_thread_once(&functions_loaded, load_functions)) != 0)
return AVERROR_UNKNOWN;
if (!mD3D11CreateDevice || !mCreateDXGIFactory) {
av_log(ctx, AV_LOG_ERROR, "Failed to load D3D11 library or its functions\n");
return AVERROR_UNKNOWN;
}
if (device) {
IDXGIFactory2 *pDXGIFactory;
hr = mCreateDXGIFactory(&IID_IDXGIFactory2, (void **)&pDXGIFactory);
if (SUCCEEDED(hr)) {
int adapter = atoi(device);
if (FAILED(IDXGIFactory2_EnumAdapters(pDXGIFactory, adapter, &pAdapter)))
pAdapter = NULL;
IDXGIFactory2_Release(pDXGIFactory);
}
}
hr = mD3D11CreateDevice(pAdapter, pAdapter ? D3D_DRIVER_TYPE_UNKNOWN : D3D_DRIVER_TYPE_HARDWARE, NULL, creationFlags, NULL, 0,
D3D11_SDK_VERSION, &device_hwctx->device, NULL, NULL);
if (pAdapter)
IDXGIAdapter_Release(pAdapter);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Failed to create Direct3D device (%lx)\n", (long)hr);
return AVERROR_UNKNOWN;
}
hr = ID3D11Device_QueryInterface(device_hwctx->device, &IID_ID3D10Multithread, (void **)&pMultithread);
if (SUCCEEDED(hr)) {
ID3D10Multithread_SetMultithreadProtected(pMultithread, TRUE);
ID3D10Multithread_Release(pMultithread);
}
#if !HAVE_UWP && HAVE_DXGIDEBUG_H
if (is_debug) {
HANDLE dxgidebug_dll = LoadLibrary("dxgidebug.dll");
if (dxgidebug_dll) {
HRESULT (WINAPI * pf_DXGIGetDebugInterface)(const GUID *riid, void **ppDebug)
= (void *)GetProcAddress(dxgidebug_dll, "DXGIGetDebugInterface");
if (pf_DXGIGetDebugInterface) {
IDXGIDebug *dxgi_debug = NULL;
hr = pf_DXGIGetDebugInterface(&IID_IDXGIDebug, (void**)&dxgi_debug);
if (SUCCEEDED(hr) && dxgi_debug)
IDXGIDebug_ReportLiveObjects(dxgi_debug, DXGI_DEBUG_ALL, DXGI_DEBUG_RLO_ALL);
}
}
}
#endif
return 0;
}
const HWContextType ff_hwcontext_type_d3d11va = {
.type = AV_HWDEVICE_TYPE_D3D11VA,
.name = "D3D11VA",
.device_hwctx_size = sizeof(AVD3D11VADeviceContext),
.frames_hwctx_size = sizeof(AVD3D11VAFramesContext),
.frames_priv_size = sizeof(D3D11VAFramesContext),
.device_create = d3d11va_device_create,
.device_init = d3d11va_device_init,
.device_uninit = d3d11va_device_uninit,
.frames_init = d3d11va_frames_init,
.frames_uninit = d3d11va_frames_uninit,
.frames_get_buffer = d3d11va_get_buffer,
.transfer_get_formats = d3d11va_transfer_get_formats,
.transfer_data_to = d3d11va_transfer_data,
.transfer_data_from = d3d11va_transfer_data,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_D3D11, AV_PIX_FMT_NONE },
};
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