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mpv/video/decode/dxva2.c

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/*
* Ported from FFmpeg ffmpeg_dxva2.c (2dbee1a3935a91842c22eb65fd13f77e8d590e07).
* Original copyright header follows:
*
* 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
*/
#define DXVA2API_USE_BITFIELDS
#include <libavcodec/dxva2.h>
#include "lavc.h"
#include "common/common.h"
#include "common/av_common.h"
#include "osdep/windows_utils.h"
#include "video/fmt-conversion.h"
#include "video/mp_image_pool.h"
#include "video/hwdec.h"
#include "video/d3d.h"
#include "video/dxva2.h"
#include "d3d.h"
#define ADDITIONAL_SURFACES (4 + HWDEC_DELAY_QUEUE_COUNT)
struct priv {
struct mp_log *log;
HMODULE d3d9_dll;
HMODULE dxva2_dll;
IDirect3D9 *d3d9;
IDirect3DDevice9 *device;
HANDLE device_handle;
IDirect3DDeviceManager9 *device_manager;
IDirectXVideoDecoderService *decoder_service;
struct mp_image_pool *decoder_pool;
struct mp_image_pool *sw_pool;
int mpfmt_decoded;
};
static struct mp_image *dxva2_allocate_image(struct lavc_ctx *s, int w, int h)
{
struct priv *p = s->hwdec_priv;
struct mp_image *img = mp_image_pool_get_no_alloc(p->decoder_pool,
IMGFMT_DXVA2, w, h);
if (!img)
MP_ERR(p, "Failed to allocate additional DXVA2 surface.\n");
return img;
}
static struct mp_image *dxva2_retrieve_image(struct lavc_ctx *s,
struct mp_image *img)
{
HRESULT hr;
struct priv *p = s->hwdec_priv;
IDirect3DSurface9 *surface = d3d9_surface_in_mp_image(img);
if (!surface) {
MP_ERR(p, "Failed to get Direct3D surface from mp_image\n");
return img;
}
D3DSURFACE_DESC surface_desc;
IDirect3DSurface9_GetDesc(surface, &surface_desc);
if (surface_desc.Width < img->w || surface_desc.Height < img->h) {
MP_ERR(p, "Direct3D11 texture smaller than mp_image dimensions\n");
return img;
}
struct mp_image *sw_img = mp_image_pool_get(p->sw_pool,
p->mpfmt_decoded,
surface_desc.Width,
surface_desc.Height);
if (!sw_img) {
MP_ERR(p, "Failed to get %s surface from CPU pool\n",
mp_imgfmt_to_name(p->mpfmt_decoded));
return img;
}
D3DLOCKED_RECT lock;
hr = IDirect3DSurface9_LockRect(surface, &lock, NULL, D3DLOCK_READONLY);
if (FAILED(hr)) {
MP_ERR(p, "Unable to lock DXVA2 surface: %s\n",
mp_HRESULT_to_str(hr));
talloc_free(sw_img);
return img;
}
copy_nv12(sw_img, lock.pBits, lock.Pitch, surface_desc.Height);
IDirect3DSurface9_UnlockRect(surface);
mp_image_set_size(sw_img, img->w, img->h);
mp_image_copy_attributes(sw_img, img);
talloc_free(img);
return sw_img;
}
struct d3d9_format {
D3DFORMAT format;
int depth;
};
static const struct d3d9_format d3d9_formats[] = {
{MKTAG('N','V','1','2'), 8},
{MKTAG('P','0','1','0'), 10},
{MKTAG('P','0','1','6'), 16},
};
static void dump_decoder_info(struct lavc_ctx *s,
GUID *device_guids, UINT n_guids)
{
struct priv *p = s->hwdec_priv;
MP_VERBOSE(p, "%u decoder devices:\n", (unsigned)n_guids);
for (UINT i = 0; i < n_guids; i++) {
GUID *guid = &device_guids[i];
char *description = d3d_decoder_guid_to_desc(guid);
D3DFORMAT *formats = NULL;
UINT n_formats = 0;
HRESULT hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(
p->decoder_service, guid, &n_formats, &formats);
if (FAILED(hr)) {
MP_ERR(p, "Failed to get render targets for decoder %s:%s",
description, mp_HRESULT_to_str(hr));
}
char fmts[256] = {0};
for (UINT j = 0; j < n_formats; j++) {
mp_snprintf_cat(fmts, sizeof(fmts),
" %s", mp_tag_str(formats[j]));
}
CoTaskMemFree(formats);
MP_VERBOSE(p, "%s %s\n", description, fmts);
}
}
static DWORD get_dxfmt_cb(struct lavc_ctx *s, const GUID *guid, int depth)
{
DWORD ret = 0;
struct priv *p = s->hwdec_priv;
D3DFORMAT *formats = NULL;
UINT n_formats = 0;
HRESULT hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(
p->decoder_service, guid, &n_formats, &formats);
if (FAILED(hr)) {
MP_ERR(p, "Callback failed to get render targets for decoder %s: %s",
d3d_decoder_guid_to_desc(guid), mp_HRESULT_to_str(hr));
return 0;
}
for (int i = 0; i < MP_ARRAY_SIZE(d3d9_formats); i++) {
const struct d3d9_format *d3d9_fmt = &d3d9_formats[i];
if (d3d9_fmt->depth < depth)
continue;
for (UINT j = 0; j < n_formats; j++) {
if (formats[i] == d3d9_fmt->format) {
ret = formats[i];
goto done;
}
}
}
done:
CoTaskMemFree(formats);
return ret;
}
static int dxva2_init_decoder(struct lavc_ctx *s, int w, int h)
{
HRESULT hr;
int ret = -1;
struct priv *p = s->hwdec_priv;
TA_FREEP(&p->decoder_pool);
int n_surfaces = hwdec_get_max_refs(s) + ADDITIONAL_SURFACES;
IDirect3DSurface9 **surfaces = NULL;
IDirectXVideoDecoder *decoder = NULL;
void *tmp = talloc_new(NULL);
UINT n_guids;
GUID *device_guids;
hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(
p->decoder_service, &n_guids, &device_guids);
if (FAILED(hr)) {
MP_ERR(p, "Failed to retrieve decoder device GUIDs: %s\n",
mp_HRESULT_to_str(hr));
goto done;
}
dump_decoder_info(s, device_guids, n_guids);
struct d3d_decoder_fmt fmt =
d3d_select_decoder_mode(s, device_guids, n_guids, get_dxfmt_cb);
CoTaskMemFree(device_guids);
if (fmt.mpfmt_decoded == IMGFMT_NONE) {
MP_ERR(p, "Failed to find a suitable decoder\n");
goto done;
}
p->mpfmt_decoded = fmt.mpfmt_decoded;
struct mp_image_pool *decoder_pool =
talloc_steal(tmp, mp_image_pool_new(n_surfaces));
DXVA2_ConfigPictureDecode *decoder_config =
talloc_zero(decoder_pool, DXVA2_ConfigPictureDecode);
int w_align = w, h_align = h;
d3d_surface_align(s, &w_align, &h_align);
DXVA2_VideoDesc video_desc ={
.SampleWidth = w,
.SampleHeight = h,
.Format = fmt.dxfmt_decoded,
};
UINT n_configs = 0;
DXVA2_ConfigPictureDecode *configs = NULL;
hr = IDirectXVideoDecoderService_GetDecoderConfigurations(
p->decoder_service, fmt.guid, &video_desc, NULL,
&n_configs, &configs);
if (FAILED(hr)) {
MP_ERR(p, "Unable to retrieve decoder configurations: %s\n",
mp_HRESULT_to_str(hr));
goto done;
}
unsigned max_score = 0;
for (UINT i = 0; i < n_configs; i++) {
unsigned score = d3d_decoder_config_score(
s, &configs[i].guidConfigBitstreamEncryption,
configs[i].ConfigBitstreamRaw);
if (score > max_score) {
max_score = score;
*decoder_config = configs[i];
}
}
CoTaskMemFree(configs);
if (!max_score) {
MP_ERR(p, "Failed to find a suitable decoder configuration\n");
goto done;
}
surfaces = talloc_zero_array(decoder_pool, IDirect3DSurface9*, n_surfaces);
hr = IDirectXVideoDecoderService_CreateSurface(
p->decoder_service,
w_align, h_align,
n_surfaces - 1, fmt.dxfmt_decoded, D3DPOOL_DEFAULT, 0,
DXVA2_VideoDecoderRenderTarget, surfaces, NULL);
if (FAILED(hr)) {
MP_ERR(p, "Failed to create %d video surfaces: %s\n",
n_surfaces, mp_HRESULT_to_str(hr));
goto done;
}
hr = IDirectXVideoDecoderService_CreateVideoDecoder(
p->decoder_service, fmt.guid, &video_desc, decoder_config,
surfaces, n_surfaces, &decoder);
if (FAILED(hr)) {
MP_ERR(p, "Failed to create DXVA2 video decoder: %s\n",
mp_HRESULT_to_str(hr));
goto done;
}
for (int i = 0; i < n_surfaces; i++) {
struct mp_image *img = dxva2_new_ref(decoder, surfaces[i], w, h);
if (!img) {
MP_ERR(p, "Failed to create DXVA2 image\n");
goto done;
}
mp_image_pool_add(decoder_pool, img); // transferred to pool
}
// Pass required information on to ffmpeg.
struct dxva_context *dxva_ctx = s->avctx->hwaccel_context;
dxva_ctx->cfg = decoder_config;
dxva_ctx->decoder = decoder;
dxva_ctx->surface_count = n_surfaces;
dxva_ctx->surface = surfaces;
dxva_ctx->workaround = is_clearvideo(fmt.guid) ?
FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO : 0;
p->decoder_pool = talloc_steal(NULL, decoder_pool);
ret = 0;
done:
// On success, `p->decoder_pool` mp_images still hold refs to `surfaces` and
// `decoder`, so the pointers in the ffmpeg `dxva_context` strcture remain
// valid for the lifetime of the pool.
if (surfaces) {
for (int i = 0; i < n_surfaces; i++)
IDirect3DSurface9_Release(surfaces[i]);
}
if (decoder)
IDirectXVideoDecoder_Release(decoder);
talloc_free(tmp);
return ret;
}
static void destroy_device(struct lavc_ctx *s)
{
struct priv *p = s->hwdec_priv;
if (p->device)
IDirect3DDevice9_Release(p->device);
if (p->d3d9)
IDirect3D9_Release(p->d3d9);
if (p->d3d9_dll)
FreeLibrary(p->d3d9_dll);
if (p->dxva2_dll)
FreeLibrary(p->dxva2_dll);
}
static bool create_device(struct lavc_ctx *s)
{
struct priv *p = s->hwdec_priv;
p->d3d9_dll = LoadLibrary(L"d3d9.dll");
if (!p->d3d9_dll) {
MP_ERR(p, "Failed to load D3D9 library\n");
return false;
}
IDirect3D9* (WINAPI *Direct3DCreate9)(UINT) =
(void *)GetProcAddress(p->d3d9_dll, "Direct3DCreate9");
if (!Direct3DCreate9) {
MP_ERR(p, "Failed to locate Direct3DCreate9\n");
return false;
}
p->d3d9 = Direct3DCreate9(D3D_SDK_VERSION);
if (!p->d3d9) {
MP_ERR(p, "Failed to create IDirect3D object\n");
return false;
}
UINT adapter = D3DADAPTER_DEFAULT;
D3DDISPLAYMODE display_mode;
IDirect3D9_GetAdapterDisplayMode(p->d3d9, adapter, &display_mode);
D3DPRESENT_PARAMETERS present_params = {
.Windowed = TRUE,
.BackBufferWidth = 640,
.BackBufferHeight = 480,
.BackBufferCount = 0,
.BackBufferFormat = display_mode.Format,
.SwapEffect = D3DSWAPEFFECT_DISCARD,
.Flags = D3DPRESENTFLAG_VIDEO,
};
HRESULT hr = IDirect3D9_CreateDevice(p->d3d9, adapter,
D3DDEVTYPE_HAL,
GetShellWindow(),
D3DCREATE_SOFTWARE_VERTEXPROCESSING |
D3DCREATE_MULTITHREADED |
D3DCREATE_FPU_PRESERVE,
&present_params,
&p->device);
if (FAILED(hr)) {
MP_ERR(p, "Failed to create Direct3D device: %s\n",
mp_HRESULT_to_str(hr));
return false;
}
return true;
}
static void dxva2_uninit(struct lavc_ctx *s)
{
struct priv *p = s->hwdec_priv;
if (!p)
return;
av_freep(&s->avctx->hwaccel_context);
talloc_free(p->decoder_pool);
if (p->decoder_service)
IDirectXVideoDecoderService_Release(p->decoder_service);
if (p->device_manager && p->device_handle != INVALID_HANDLE_VALUE)
IDirect3DDeviceManager9_CloseDeviceHandle(p->device_manager, p->device_handle);
if (p->device_manager)
IDirect3DDeviceManager9_Release(p->device_manager);
destroy_device(s);
TA_FREEP(&s->hwdec_priv);
}
static int dxva2_init(struct lavc_ctx *s)
{
HRESULT hr;
struct priv *p = talloc_zero(NULL, struct priv);
if (!p)
return -1;
s->hwdec_priv = p;
p->device_handle = INVALID_HANDLE_VALUE;
p->log = mp_log_new(s, s->log, "dxva2");
if (s->hwdec->type == HWDEC_DXVA2_COPY) {
mp_check_gpu_memcpy(p->log, NULL);
p->sw_pool = talloc_steal(p, mp_image_pool_new(17));
}
if (s->hwdec_info && s->hwdec_info->hwctx && s->hwdec_info->hwctx->d3d_ctx)
p->device = s->hwdec_info->hwctx->d3d_ctx->d3d9_device;
if (p->device) {
IDirect3D9_AddRef(p->device);
MP_VERBOSE(p, "Using VO-supplied device %p.\n", p->device);
} else if (s->hwdec->type == HWDEC_DXVA2) {
MP_ERR(p, "No Direct3D device provided for native dxva2 decoding\n");
goto fail;
} else {
if (!create_device(s))
goto fail;
}
p->dxva2_dll = LoadLibrary(L"dxva2.dll");
if (!p->dxva2_dll) {
MP_ERR(p, "Failed to load DXVA2 library\n");
goto fail;
}
HRESULT (WINAPI *CreateDeviceManager9)(UINT *, IDirect3DDeviceManager9 **) =
(void *)GetProcAddress(p->dxva2_dll,
"DXVA2CreateDirect3DDeviceManager9");
if (!CreateDeviceManager9) {
MP_ERR(p, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
goto fail;
}
unsigned reset_token = 0;
hr = CreateDeviceManager9(&reset_token, &p->device_manager);
if (FAILED(hr)) {
MP_ERR(p, "Failed to create Direct3D device manager: %s\n",
mp_HRESULT_to_str(hr));
goto fail;
}
hr = IDirect3DDeviceManager9_ResetDevice(p->device_manager,
p->device, reset_token);
if (FAILED(hr)) {
MP_ERR(p, "Failed to bind Direct3D device to device manager: %s\n",
mp_HRESULT_to_str(hr));
goto fail;
}
hr = IDirect3DDeviceManager9_OpenDeviceHandle(p->device_manager,
&p->device_handle);
if (FAILED(hr)) {
MP_ERR(p, "Failed to open device handle: %s\n",
mp_HRESULT_to_str(hr));
goto fail;
}
hr = IDirect3DDeviceManager9_GetVideoService(
p->device_manager, p->device_handle, &IID_IDirectXVideoDecoderService,
(void **)&p->decoder_service);
if (FAILED(hr)) {
MP_ERR(p, "Failed to create IDirectXVideoDecoderService: %s\n",
mp_HRESULT_to_str(hr));
goto fail;
}
s->avctx->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
if (!s->avctx->hwaccel_context)
goto fail;
return 0;
fail:
dxva2_uninit(s);
return -1;
}
static int dxva2_probe(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
const char *decoder)
{
hwdec_request_api(info, "dxva2");
// dxva2-copy can do without external context; dxva2 requires it.
if (hwdec->type != HWDEC_DXVA2_COPY) {
if (!info || !info->hwctx || !info->hwctx->d3d_ctx ||
info->hwctx->type == HWDEC_DXVA2_COPY)
return HWDEC_ERR_NO_CTX;
}
return d3d_probe_codec(decoder);
}
const struct vd_lavc_hwdec mp_vd_lavc_dxva2 = {
.type = HWDEC_DXVA2,
.image_format = IMGFMT_DXVA2,
.probe = dxva2_probe,
.init = dxva2_init,
.uninit = dxva2_uninit,
.init_decoder = dxva2_init_decoder,
.allocate_image = dxva2_allocate_image,
};
const struct vd_lavc_hwdec mp_vd_lavc_dxva2_copy = {
.type = HWDEC_DXVA2_COPY,
.image_format = IMGFMT_DXVA2,
.probe = dxva2_probe,
.init = dxva2_init,
.uninit = dxva2_uninit,
.init_decoder = dxva2_init_decoder,
.allocate_image = dxva2_allocate_image,
.process_image = dxva2_retrieve_image,
};
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