/*
* 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 <windows.h>
#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0600
#endif
#define DXVA2API_USE_BITFIELDS
#define COBJMACROS
#include <d3d9.h>
#include <dxva2api.h>
#include <initguid.h>
#include "avassert.h"
#include "common.h"
#include "hwcontext.h"
#include "hwcontext_dxva2.h"
#include "hwcontext_internal.h"
#include "imgutils.h"
#include "pixdesc.h"
#include "pixfmt.h"
typedef IDirect3D9* WINAPI pDirect3DCreate9(UINT);
typedef HRESULT WINAPI pCreateDeviceManager9(UINT *, IDirect3DDeviceManager9 **);
typedef struct DXVA2FramesContext {
IDirect3DSurface9 **surfaces_internal;
int nb_surfaces_used;
HANDLE device_handle;
IDirectXVideoAccelerationService *service;
D3DFORMAT format;
} DXVA2FramesContext;
typedef struct DXVA2DevicePriv {
HMODULE d3dlib;
HMODULE dxva2lib;
HANDLE device_handle;
IDirect3D9 *d3d9;
IDirect3DDevice9 *d3d9device;
} DXVA2DevicePriv;
static const struct {
D3DFORMAT d3d_format;
enum AVPixelFormat pix_fmt;
} supported_formats[] = {
{ MKTAG('N', 'V', '1', '2'), AV_PIX_FMT_NV12 },
{ MKTAG('P', '0', '1', '0'), AV_PIX_FMT_P010 },
};
DEFINE_GUID(video_decoder_service, 0xfc51a551, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
DEFINE_GUID(video_processor_service, 0xfc51a552, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
static void dxva2_frames_uninit(AVHWFramesContext *ctx)
{
AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
DXVA2FramesContext *s = ctx->internal->priv;
int i;
if (frames_hwctx->decoder_to_release)
IDirectXVideoDecoder_Release(frames_hwctx->decoder_to_release);
if (s->surfaces_internal) {
for (i = 0; i < frames_hwctx->nb_surfaces; i++) {
if (s->surfaces_internal[i])
IDirect3DSurface9_Release(s->surfaces_internal[i]);
}
}
av_freep(&s->surfaces_internal);
if (s->service) {
IDirectXVideoAccelerationService_Release(s->service);
s->service = NULL;
}
if (s->device_handle != INVALID_HANDLE_VALUE) {
IDirect3DDeviceManager9_CloseDeviceHandle(device_hwctx->devmgr, s->device_handle);
s->device_handle = INVALID_HANDLE_VALUE;
}
}
static AVBufferRef *dxva2_pool_alloc(void *opaque, int size)
{
AVHWFramesContext *ctx = (AVHWFramesContext*)opaque;
DXVA2FramesContext *s = ctx->internal->priv;
AVDXVA2FramesContext *hwctx = ctx->hwctx;
if (s->nb_surfaces_used < hwctx->nb_surfaces) {
s->nb_surfaces_used++;
return av_buffer_create((uint8_t*)s->surfaces_internal[s->nb_surfaces_used - 1],
sizeof(*hwctx->surfaces), NULL, 0, 0);
}
return NULL;
}
static int dxva2_init_pool(AVHWFramesContext *ctx)
{
AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
DXVA2FramesContext *s = ctx->internal->priv;
int decode = (frames_hwctx->surface_type == DXVA2_VideoDecoderRenderTarget);
int i;
HRESULT hr;
if (ctx->initial_pool_size <= 0)
return 0;
hr = IDirect3DDeviceManager9_OpenDeviceHandle(device_hwctx->devmgr, &s->device_handle);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Failed to open device handle\n");
return AVERROR_UNKNOWN;
}
hr = IDirect3DDeviceManager9_GetVideoService(device_hwctx->devmgr,
s->device_handle,
decode ? &video_decoder_service : &video_processor_service,
(void **)&s->service);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Failed to create the video service\n");
return AVERROR_UNKNOWN;
}
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);
}
s->surfaces_internal = av_mallocz_array(ctx->initial_pool_size,
sizeof(*s->surfaces_internal));
if (!s->surfaces_internal)
return AVERROR(ENOMEM);
hr = IDirectXVideoAccelerationService_CreateSurface(s->service,
ctx->width, ctx->height,
ctx->initial_pool_size - 1,
s->format, D3DPOOL_DEFAULT, 0,
frames_hwctx->surface_type,
s->surfaces_internal, NULL);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Could not create the surfaces\n");
return AVERROR_UNKNOWN;
}
ctx->internal->pool_internal = av_buffer_pool_init2(sizeof(*s->surfaces_internal),
ctx, dxva2_pool_alloc, NULL);
if (!ctx->internal->pool_internal)
return AVERROR(ENOMEM);
frames_hwctx->surfaces = s->surfaces_internal;
frames_hwctx->nb_surfaces = ctx->initial_pool_size;
return 0;
}
static int dxva2_frames_init(AVHWFramesContext *ctx)
{
AVDXVA2FramesContext *hwctx = ctx->hwctx;
DXVA2FramesContext *s = ctx->internal->priv;
int ret;
if (hwctx->surface_type != DXVA2_VideoDecoderRenderTarget &&
hwctx->surface_type != DXVA2_VideoProcessorRenderTarget) {
av_log(ctx, AV_LOG_ERROR, "Unknown surface type: %lu\n",
hwctx->surface_type);
return AVERROR(EINVAL);
}
s->device_handle = INVALID_HANDLE_VALUE;
/* init the frame pool if the caller didn't provide one */
if (!ctx->pool) {
ret = dxva2_init_pool(ctx);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Error creating an internal frame pool\n");
return ret;
}
}
return 0;
}
static int dxva2_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
{
frame->buf[0] = av_buffer_pool_get(ctx->pool);
if (!frame->buf[0])
return AVERROR(ENOMEM);
frame->data[3] = frame->buf[0]->data;
frame->format = AV_PIX_FMT_DXVA2_VLD;
frame->width = ctx->width;
frame->height = ctx->height;
return 0;
}
static int dxva2_transfer_get_formats(AVHWFramesContext *ctx,
enum AVHWFrameTransferDirection dir,
enum AVPixelFormat **formats)
{
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;
*formats = fmts;
return 0;
}
static int dxva2_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src)
{
IDirect3DSurface9 *surface;
D3DSURFACE_DESC surfaceDesc;
D3DLOCKED_RECT LockedRect;
HRESULT hr;
int download = !!src->hw_frames_ctx;
int bytes_per_component;
switch (ctx->sw_format) {
case AV_PIX_FMT_NV12:
bytes_per_component = 1;
break;
case AV_PIX_FMT_P010:
bytes_per_component = 2;
break;
default:
av_assert0(0);
}
surface = (IDirect3DSurface9*)(download ? src->data[3] : dst->data[3]);
hr = IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Error getting a surface description\n");
return AVERROR_UNKNOWN;
}
hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL,
download ? D3DLOCK_READONLY : D3DLOCK_DISCARD);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
return AVERROR_UNKNOWN;
}
if (download) {
av_image_copy_plane(dst->data[0], dst->linesize[0],
(uint8_t*)LockedRect.pBits, LockedRect.Pitch,
src->width * bytes_per_component, src->height);
av_image_copy_plane(dst->data[1], dst->linesize[1],
(uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
LockedRect.Pitch, src->width * bytes_per_component, src->height / 2);
} else {
av_image_copy_plane((uint8_t*)LockedRect.pBits, LockedRect.Pitch,
dst->data[0], dst->linesize[0],
src->width * bytes_per_component, src->height);
av_image_copy_plane((uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
LockedRect.Pitch, dst->data[1], dst->linesize[1],
src->width * bytes_per_component, src->height / 2);
}
IDirect3DSurface9_UnlockRect(surface);
return 0;
}
static void dxva2_device_free(AVHWDeviceContext *ctx)
{
AVDXVA2DeviceContext *hwctx = ctx->hwctx;
DXVA2DevicePriv *priv = ctx->user_opaque;
if (hwctx->devmgr && priv->device_handle != INVALID_HANDLE_VALUE)
IDirect3DDeviceManager9_CloseDeviceHandle(hwctx->devmgr, priv->device_handle);
if (hwctx->devmgr)
IDirect3DDeviceManager9_Release(hwctx->devmgr);
if (priv->d3d9device)
IDirect3DDevice9_Release(priv->d3d9device);
if (priv->d3d9)
IDirect3D9_Release(priv->d3d9);
if (priv->d3dlib)
FreeLibrary(priv->d3dlib);
if (priv->dxva2lib)
FreeLibrary(priv->dxva2lib);
av_freep(&ctx->user_opaque);
}
static int dxva2_device_create(AVHWDeviceContext *ctx, const char *device,
AVDictionary *opts, int flags)
{
AVDXVA2DeviceContext *hwctx = ctx->hwctx;
DXVA2DevicePriv *priv;
pDirect3DCreate9 *createD3D = NULL;
pCreateDeviceManager9 *createDeviceManager = NULL;
D3DPRESENT_PARAMETERS d3dpp = {0};
D3DDISPLAYMODE d3ddm;
unsigned resetToken = 0;
UINT adapter = D3DADAPTER_DEFAULT;
HRESULT hr;
if (device)
adapter = atoi(device);
priv = av_mallocz(sizeof(*priv));
if (!priv)
return AVERROR(ENOMEM);
ctx->user_opaque = priv;
ctx->free = dxva2_device_free;
priv->device_handle = INVALID_HANDLE_VALUE;
priv->d3dlib = LoadLibrary("d3d9.dll");
if (!priv->d3dlib) {
av_log(ctx, AV_LOG_ERROR, "Failed to load D3D9 library\n");
return AVERROR_UNKNOWN;
}
priv->dxva2lib = LoadLibrary("dxva2.dll");
if (!priv->dxva2lib) {
av_log(ctx, AV_LOG_ERROR, "Failed to load DXVA2 library\n");
return AVERROR_UNKNOWN;
}
createD3D = (pDirect3DCreate9 *)GetProcAddress(priv->d3dlib, "Direct3DCreate9");
if (!createD3D) {
av_log(ctx, AV_LOG_ERROR, "Failed to locate Direct3DCreate9\n");
return AVERROR_UNKNOWN;
}
createDeviceManager = (pCreateDeviceManager9 *)GetProcAddress(priv->dxva2lib,
"DXVA2CreateDirect3DDeviceManager9");
if (!createDeviceManager) {
av_log(ctx, AV_LOG_ERROR, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
return AVERROR_UNKNOWN;
}
priv->d3d9 = createD3D(D3D_SDK_VERSION);
if (!priv->d3d9) {
av_log(ctx, AV_LOG_ERROR, "Failed to create IDirect3D object\n");
return AVERROR_UNKNOWN;
}
IDirect3D9_GetAdapterDisplayMode(priv->d3d9, adapter, &d3ddm);
d3dpp.Windowed = TRUE;
d3dpp.BackBufferWidth = 640;
d3dpp.BackBufferHeight = 480;
d3dpp.BackBufferCount = 0;
d3dpp.BackBufferFormat = d3ddm.Format;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.Flags = D3DPRESENTFLAG_VIDEO;
hr = IDirect3D9_CreateDevice(priv->d3d9, adapter, D3DDEVTYPE_HAL, GetDesktopWindow(),
D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
&d3dpp, &priv->d3d9device);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Failed to create Direct3D device\n");
return AVERROR_UNKNOWN;
}
hr = createDeviceManager(&resetToken, &hwctx->devmgr);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Failed to create Direct3D device manager\n");
return AVERROR_UNKNOWN;
}
hr = IDirect3DDeviceManager9_ResetDevice(hwctx->devmgr, priv->d3d9device, resetToken);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Failed to bind Direct3D device to device manager\n");
return AVERROR_UNKNOWN;
}
hr = IDirect3DDeviceManager9_OpenDeviceHandle(hwctx->devmgr, &priv->device_handle);
if (FAILED(hr)) {
av_log(ctx, AV_LOG_ERROR, "Failed to open device handle\n");
return AVERROR_UNKNOWN;
}
return 0;
}
const HWContextType ff_hwcontext_type_dxva2 = {
.type = AV_HWDEVICE_TYPE_DXVA2,
.name = "DXVA2",
.device_hwctx_size = sizeof(AVDXVA2DeviceContext),
.frames_hwctx_size = sizeof(AVDXVA2FramesContext),
.frames_priv_size = sizeof(DXVA2FramesContext),
.device_create = dxva2_device_create,
.frames_init = dxva2_frames_init,
.frames_uninit = dxva2_frames_uninit,
.frames_get_buffer = dxva2_get_buffer,
.transfer_get_formats = dxva2_transfer_get_formats,
.transfer_data_to = dxva2_transfer_data,
.transfer_data_from = dxva2_transfer_data,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_DXVA2_VLD, AV_PIX_FMT_NONE },
};