On Fri, 16 Dec 2016 11:12:03 +0100
Steve Lhomme <rob...@gmail.com> wrote:
> From: Steve Lhomme <rob...@gmail.com>
>
> The code is similar to ffmpeg_dxva2. The decoded output needs to be copied
> into
> a staging texture that can be accessed by the CPU as the decoder texture can't
> be accessed by the CPU.
> ---
> Changelog | 1 +
> Makefile | 1 +
> ffmpeg.h | 2 +
> ffmpeg_d3d11va.c | 210
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++
> ffmpeg_opt.c | 3 +
> 5 files changed, 217 insertions(+)
> create mode 100644 ffmpeg_d3d11va.c
>
> diff --git a/Changelog b/Changelog
> index b36a631..6ec4665 100644
> --- a/Changelog
> +++ b/Changelog
> @@ -9,6 +9,7 @@ version <next>:
> - Support for spherical videos
> - configure now fails if autodetect-libraries are requested but not found
> - PSD Decoder
> +- support for decoding through D3D11VA in ffmpeg
>
> version 3.2:
> - libopenmpt demuxer
> diff --git a/Makefile b/Makefile
> index 8aa72fd..7f0da3c 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -37,6 +37,7 @@ ifndef CONFIG_VIDEOTOOLBOX
> OBJS-ffmpeg-$(CONFIG_VDA) += ffmpeg_videotoolbox.o
> endif
> OBJS-ffmpeg-$(CONFIG_CUVID) += ffmpeg_cuvid.o
> +OBJS-ffmpeg-$(CONFIG_D3D11VA) += ffmpeg_d3d11va.o
> OBJS-ffmpeg-$(HAVE_DXVA2_LIB) += ffmpeg_dxva2.o
> OBJS-ffmpeg-$(HAVE_VDPAU_X11) += ffmpeg_vdpau.o
> OBJS-ffserver += ffserver_config.o
> diff --git a/ffmpeg.h b/ffmpeg.h
> index ebe5bf0..5faf545 100644
> --- a/ffmpeg.h
> +++ b/ffmpeg.h
> @@ -67,6 +67,7 @@ enum HWAccelID {
> HWACCEL_QSV,
> HWACCEL_VAAPI,
> HWACCEL_CUVID,
> + HWACCEL_D3D11VA,
> };
>
> typedef struct HWAccel {
> @@ -633,6 +634,7 @@ int ifilter_parameters_from_decoder(InputFilter *ifilter,
> const AVCodecContext *
> int ffmpeg_parse_options(int argc, char **argv);
>
> int vdpau_init(AVCodecContext *s);
> +int d3d11va_init(AVCodecContext *s);
> int dxva2_init(AVCodecContext *s);
> int vda_init(AVCodecContext *s);
> int videotoolbox_init(AVCodecContext *s);
> diff --git a/ffmpeg_d3d11va.c b/ffmpeg_d3d11va.c
> new file mode 100644
> index 0000000..18c3e53
> --- /dev/null
> +++ b/ffmpeg_d3d11va.c
> @@ -0,0 +1,210 @@
> +/*
> + * 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 COBJMACROS
> +
> +#include <stdint.h>
> +
> +#include <d3d11.h>
> +
> +#include "ffmpeg.h"
> +
> +#include "libavcodec/d3d11va.h"
> +
> +#include "libavutil/avassert.h"
> +#include "libavutil/buffer.h"
> +#include "libavutil/frame.h"
> +#include "libavutil/imgutils.h"
> +#include "libavutil/pixfmt.h"
> +
> +#include "libavutil/hwcontext.h"
> +#include "libavutil/hwcontext_d3d11va.h"
> +
> +typedef struct D3D11VAContext {
> + D3D11_VIDEO_DECODER_CONFIG decoder_config;
> +
> + AVFrame *tmp_frame;
> +
> + AVBufferRef *hw_device_ctx;
> + AVBufferRef *hw_frames_ctx;
> +} D3D11VAContext;
> +
> +typedef D3D11_VIDEO_DECODER_CONFIG DXVA_DECODER_CONFIG;
> +typedef DXGI_FORMAT DXVA_SURFACE_FORMAT;
> +typedef D3D11VAContext DXVA_CONTEXT;
> +typedef AVD3D11VAContext DXVA_AV_CONTEXT;
> +typedef ID3D11VideoDevice *DXVA_DECODER_SERVICE;
> +#include "ffmpeg_directx_va_template.c"
Is this kind of approach really necessary? In mpv we did it without
preprocessor abuse.
> +
> +static int d3d11va_get_decoder_configuration(AVCodecContext *s,
> + const D3D11_VIDEO_DECODER_DESC
> *desc,
> + D3D11_VIDEO_DECODER_CONFIG
> *config)
> +{
> + InputStream *ist = s->opaque;
> + int loglevel = (ist->hwaccel_id == HWACCEL_AUTO)
> ? AV_LOG_VERBOSE : AV_LOG_ERROR;
> + D3D11VAContext *ctx = ist->hwaccel_ctx;
> + AVHWDeviceContext *device_ctx =
> (AVHWDeviceContext*)ctx->hw_device_ctx->data;
> + AVD3D11VADeviceContext *device_hwctx = device_ctx->hwctx;
> + unsigned cfg_count;
> + D3D11_VIDEO_DECODER_CONFIG *cfg_list;
> + HRESULT hr;
> + int i, ret;
> +
> + hr =
> ID3D11VideoDevice_GetVideoDecoderConfigCount(device_hwctx->video_device,
> desc, &cfg_count);
> + if (FAILED(hr)) {
> + av_log(NULL, loglevel, "Unable to retrieve decoder
> configurations\n");
> + return AVERROR(EINVAL);
> + }
> +
> + cfg_list = av_malloc(cfg_count * sizeof(D3D11_VIDEO_DECODER_CONFIG));
> + if (cfg_list == NULL)
> + return AVERROR(ENOMEM);
> + for (i = 0; i < cfg_count; i++) {
> + hr =
> ID3D11VideoDevice_GetVideoDecoderConfig(device_hwctx->video_device, desc, i,
> &cfg_list[i]);
> + if (FAILED(hr)) {
> + av_log(NULL, loglevel, "Unable to retrieve decoder
> configurations. (hr=0x%lX)\n", hr);
> + free(cfg_list);
> + return AVERROR(EINVAL);
> + }
> + }
> +
> + ret = dxva_get_decoder_configuration(s, cfg_list, cfg_count, config);
> + av_free(cfg_list);
> + return ret;
> +}
> +
> +static int d3d11va_validate_output(ID3D11VideoDevice *service, GUID guid,
> DXGI_FORMAT surface_format)
> +{
> + HRESULT hr;
> + BOOL is_supported = FALSE;
> + hr = ID3D11VideoDevice_CheckVideoDecoderFormat(service, &guid,
> surface_format, &is_supported);
> + return SUCCEEDED(hr) && is_supported;
> +}
> +
> +static int d3d11va_create_decoder(AVCodecContext *s)
> +{
> + InputStream *ist = s->opaque;
> + int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE :
> AV_LOG_ERROR;
> + D3D11VAContext *ctx = ist->hwaccel_ctx;
> + AVD3D11VAContext *dxva_ctx = s->hwaccel_context;
> + GUID *guid_list;
> + unsigned guid_count, i;
> + GUID device_guid;
> + const DXGI_FORMAT surface_format = s->sw_pix_fmt == AV_PIX_FMT_YUV420P10
> ?
> + DXGI_FORMAT_P010 : DXGI_FORMAT_NV12;
> + D3D11_VIDEO_DECODER_DESC desc = { 0 };
> + D3D11_VIDEO_DECODER_CONFIG config;
> + HRESULT hr;
> + int ret;
> +
> + AVD3D11VAFramesContext *frames_hwctx;
> + AVHWFramesContext *frames_ctx;
> +
> + AVHWDeviceContext *device_ctx;
> + AVD3D11VADeviceContext *device_hwctx;
> + device_ctx = (AVHWDeviceContext*)ctx->hw_device_ctx->data;
> + device_hwctx = device_ctx->hwctx;
> +
> + guid_count =
> ID3D11VideoDevice_GetVideoDecoderProfileCount(device_hwctx->video_device);
> + guid_list = av_malloc(sizeof(*guid_list) * guid_count);
> + if (guid_list==NULL) {
> + av_log(NULL, loglevel, "Failed to get the decoder GUIDs\n");
> + goto fail;
> + }
> + for (i=0; i<guid_count; i++) {
> + hr =
> ID3D11VideoDevice_GetVideoDecoderProfile(device_hwctx->video_device, i,
> &guid_list[i]);
> + if (FAILED(hr)) {
> + av_log(NULL, loglevel, "Failed to retrieve decoder GUID %d\n",
> i);
> + av_free(guid_list);
> + goto fail;
> + }
> + }
> +
> + ret = dxva_get_decoder_guid(s, device_hwctx->video_device,
> surface_format, d3d11va_validate_output,
> + guid_count, guid_list, &device_guid);
> + av_free(guid_list);
> + if (ret < 0) {
> + goto fail;
> + }
> +
> + desc.SampleWidth = s->coded_width;
> + desc.SampleHeight = s->coded_height;
> + desc.OutputFormat = surface_format;
> + desc.Guid = device_guid;
> +
> + ret = d3d11va_get_decoder_configuration(s, &desc, &config);
> + if (ret < 0) {
> + goto fail;
> + }
> +
> + ctx->hw_frames_ctx = av_hwframe_ctx_alloc(ctx->hw_device_ctx);
> + if (!ctx->hw_frames_ctx)
> + goto fail;
> + frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
> + frames_hwctx = frames_ctx->hwctx;
> + frames_ctx->format = AV_PIX_FMT_D3D11VA_VLD;
> +
> + dxva_adjust_decoder(s);
> +
> + hr = ID3D11VideoDevice_CreateVideoDecoder(device_hwctx->video_device,
> &desc,
> + &config,
> &frames_hwctx->decoder_to_release);
> + if (FAILED(hr)) {
> + av_log(NULL, loglevel, "Failed to create D3D11VA video decoder\n");
> + goto fail;
> + }
> +
> + ret = av_hwframe_ctx_init(ctx->hw_frames_ctx);
> + if (ret < 0) {
> + av_log(NULL, loglevel, "Failed to initialize the HW frames
> context\n");
> + goto fail;
> + }
> +
> + ctx->decoder_config = config;
> +
> + dxva_ctx->cfg = &ctx->decoder_config;
> + dxva_ctx->decoder = frames_hwctx->decoder_to_release;
> + dxva_ctx->surface = frames_hwctx->surfaces;
> + dxva_ctx->surface_count = frames_hwctx->nb_surfaces;
> + dxva_ctx->context_mutex = frames_hwctx->dev_ctx_mutex;
> + dxva_ctx->video_context = device_hwctx->video_context;
> +
> + return 0;
> +fail:
> + av_buffer_unref(&ctx->hw_frames_ctx);
> + return AVERROR(EINVAL);
> +}
> +
> +int d3d11va_init(AVCodecContext *s)
> +{
> + InputStream *ist = s->opaque;
> + int ret;
> +
> + if (!ist->hwaccel_ctx) {
> + ret = dxva_alloc(s, AV_HWDEVICE_TYPE_D3D11VA);
> + if (ret < 0)
> + return ret;
> + }
> +
> + return dxva_init(s, d3d11va_create_decoder);
> +}
> diff --git a/ffmpeg_opt.c b/ffmpeg_opt.c
> index 6862456..238ae51 100644
> --- a/ffmpeg_opt.c
> +++ b/ffmpeg_opt.c
> @@ -69,6 +69,9 @@ const HWAccel hwaccels[] = {
> #if HAVE_VDPAU_X11
> { "vdpau", vdpau_init, HWACCEL_VDPAU, AV_PIX_FMT_VDPAU },
> #endif
> +#if CONFIG_D3D11VA
> + { "d3d11va", d3d11va_init, HWACCEL_D3D11VA, AV_PIX_FMT_D3D11VA_VLD },
> +#endif
> #if HAVE_DXVA2_LIB
> { "dxva2", dxva2_init, HWACCEL_DXVA2, AV_PIX_FMT_DXVA2_VLD },
> #endif
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