mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-10 17:41:09 +02:00
293 lines
9.7 KiB
C
293 lines
9.7 KiB
C
![]() |
/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <windows.h>
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#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
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#undef _WIN32_WINNT
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#define _WIN32_WINNT 0x0600
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#endif
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#define DXVA2API_USE_BITFIELDS
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#define COBJMACROS
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#include <d3d9.h>
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#include <dxva2api.h>
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#include <initguid.h>
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#include "common.h"
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#include "hwcontext.h"
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#include "hwcontext_dxva2.h"
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#include "hwcontext_internal.h"
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#include "imgutils.h"
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#include "pixdesc.h"
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#include "pixfmt.h"
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typedef struct DXVA2FramesContext {
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IDirect3DSurface9 **surfaces_internal;
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int nb_surfaces_used;
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HANDLE device_handle;
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IDirectXVideoAccelerationService *service;
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D3DFORMAT format;
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} DXVA2FramesContext;
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static const struct {
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D3DFORMAT d3d_format;
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enum AVPixelFormat pix_fmt;
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} supported_formats[] = {
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{ MKTAG('N', 'V', '1', '2'), AV_PIX_FMT_NV12 },
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};
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DEFINE_GUID(video_decoder_service, 0xfc51a551, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
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DEFINE_GUID(video_processor_service, 0xfc51a552, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
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static void dxva2_frames_uninit(AVHWFramesContext *ctx)
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{
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AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
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AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
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DXVA2FramesContext *s = ctx->internal->priv;
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int i;
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if (frames_hwctx->decoder_to_release)
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IDirectXVideoDecoder_Release(frames_hwctx->decoder_to_release);
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if (s->surfaces_internal) {
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for (i = 0; i < frames_hwctx->nb_surfaces; i++) {
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if (s->surfaces_internal[i])
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IDirect3DSurface9_Release(s->surfaces_internal[i]);
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}
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}
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av_freep(&s->surfaces_internal);
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if (s->service) {
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IDirectXVideoAccelerationService_Release(s->service);
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s->service = NULL;
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}
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if (s->device_handle != INVALID_HANDLE_VALUE) {
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IDirect3DDeviceManager9_CloseDeviceHandle(device_hwctx->devmgr, s->device_handle);
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s->device_handle = INVALID_HANDLE_VALUE;
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}
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}
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static AVBufferRef *dxva2_pool_alloc(void *opaque, int size)
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{
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AVHWFramesContext *ctx = (AVHWFramesContext*)opaque;
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DXVA2FramesContext *s = ctx->internal->priv;
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AVDXVA2FramesContext *hwctx = ctx->hwctx;
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if (s->nb_surfaces_used < hwctx->nb_surfaces) {
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s->nb_surfaces_used++;
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return av_buffer_create((uint8_t*)s->surfaces_internal[s->nb_surfaces_used - 1],
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sizeof(*hwctx->surfaces), NULL, 0, 0);
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}
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return NULL;
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}
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static int dxva2_init_pool(AVHWFramesContext *ctx)
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{
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AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
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AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
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DXVA2FramesContext *s = ctx->internal->priv;
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int decode = (frames_hwctx->surface_type == DXVA2_VideoDecoderRenderTarget);
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int i;
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HRESULT hr;
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if (ctx->initial_pool_size <= 0)
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return 0;
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hr = IDirect3DDeviceManager9_OpenDeviceHandle(device_hwctx->devmgr, &s->device_handle);
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if (FAILED(hr)) {
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av_log(ctx, AV_LOG_ERROR, "Failed to open device handle\n");
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return AVERROR_UNKNOWN;
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}
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hr = IDirect3DDeviceManager9_GetVideoService(device_hwctx->devmgr,
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s->device_handle,
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decode ? &video_decoder_service : &video_processor_service,
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(void **)&s->service);
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if (FAILED(hr)) {
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av_log(ctx, AV_LOG_ERROR, "Failed to create the video service\n");
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return AVERROR_UNKNOWN;
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}
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for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
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if (ctx->sw_format == supported_formats[i].pix_fmt) {
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s->format = supported_formats[i].d3d_format;
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break;
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}
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}
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if (i == FF_ARRAY_ELEMS(supported_formats)) {
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av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format: %s\n",
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av_get_pix_fmt_name(ctx->sw_format));
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return AVERROR(EINVAL);
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}
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s->surfaces_internal = av_mallocz_array(ctx->initial_pool_size,
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sizeof(*s->surfaces_internal));
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if (!s->surfaces_internal)
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return AVERROR(ENOMEM);
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hr = IDirectXVideoAccelerationService_CreateSurface(s->service,
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ctx->width, ctx->height,
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ctx->initial_pool_size - 1,
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s->format, D3DPOOL_DEFAULT, 0,
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frames_hwctx->surface_type,
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s->surfaces_internal, NULL);
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if (FAILED(hr)) {
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av_log(ctx, AV_LOG_ERROR, "Could not create the surfaces\n");
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return AVERROR_UNKNOWN;
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}
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ctx->internal->pool_internal = av_buffer_pool_init2(sizeof(*s->surfaces_internal),
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ctx, dxva2_pool_alloc, NULL);
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if (!ctx->internal->pool_internal)
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return AVERROR(ENOMEM);
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frames_hwctx->surfaces = s->surfaces_internal;
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frames_hwctx->nb_surfaces = ctx->initial_pool_size;
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return 0;
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}
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static int dxva2_frames_init(AVHWFramesContext *ctx)
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{
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AVDXVA2FramesContext *hwctx = ctx->hwctx;
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DXVA2FramesContext *s = ctx->internal->priv;
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int ret;
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if (hwctx->surface_type != DXVA2_VideoDecoderRenderTarget &&
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hwctx->surface_type != DXVA2_VideoProcessorRenderTarget) {
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av_log(ctx, AV_LOG_ERROR, "Unknown surface type: %lu\n",
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hwctx->surface_type);
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return AVERROR(EINVAL);
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}
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s->device_handle = INVALID_HANDLE_VALUE;
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/* init the frame pool if the caller didn't provide one */
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if (!ctx->pool) {
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ret = dxva2_init_pool(ctx);
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if (ret < 0) {
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av_log(ctx, AV_LOG_ERROR, "Error creating an internal frame pool\n");
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return ret;
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}
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}
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return 0;
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}
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static int dxva2_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
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{
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frame->buf[0] = av_buffer_pool_get(ctx->pool);
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if (!frame->buf[0])
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return AVERROR(ENOMEM);
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frame->data[3] = frame->buf[0]->data;
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frame->format = AV_PIX_FMT_DXVA2_VLD;
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frame->width = ctx->width;
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frame->height = ctx->height;
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return 0;
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}
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static int dxva2_transfer_get_formats(AVHWFramesContext *ctx,
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enum AVHWFrameTransferDirection dir,
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enum AVPixelFormat **formats)
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{
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enum AVPixelFormat *fmts;
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fmts = av_malloc_array(2, sizeof(*fmts));
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if (!fmts)
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return AVERROR(ENOMEM);
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fmts[0] = ctx->sw_format;
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fmts[1] = AV_PIX_FMT_NONE;
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*formats = fmts;
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return 0;
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}
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static int dxva2_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
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const AVFrame *src)
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{
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IDirect3DSurface9 *surface;
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D3DSURFACE_DESC surfaceDesc;
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D3DLOCKED_RECT LockedRect;
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HRESULT hr;
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int download = !!src->hw_frames_ctx;
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surface = (IDirect3DSurface9*)(download ? src->data[3] : dst->data[3]);
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hr = IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
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if (FAILED(hr)) {
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av_log(ctx, AV_LOG_ERROR, "Error getting a surface description\n");
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return AVERROR_UNKNOWN;
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}
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hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL,
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download ? D3DLOCK_READONLY : D3DLOCK_DISCARD);
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if (FAILED(hr)) {
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av_log(ctx, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
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return AVERROR_UNKNOWN;
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}
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if (download) {
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av_image_copy_plane(dst->data[0], dst->linesize[0],
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(uint8_t*)LockedRect.pBits, LockedRect.Pitch,
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src->width, src->height);
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av_image_copy_plane(dst->data[1], dst->linesize[1],
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(uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
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LockedRect.Pitch, src->width, src->height / 2);
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} else {
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av_image_copy_plane((uint8_t*)LockedRect.pBits, LockedRect.Pitch,
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dst->data[0], dst->linesize[0],
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src->width, src->height);
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av_image_copy_plane((uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
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LockedRect.Pitch, dst->data[1], dst->linesize[1],
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src->width, src->height / 2);
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}
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IDirect3DSurface9_UnlockRect(surface);
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return 0;
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}
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const HWContextType ff_hwcontext_type_dxva2 = {
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.type = AV_HWDEVICE_TYPE_DXVA2,
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.name = "DXVA2",
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.device_hwctx_size = sizeof(AVDXVA2DeviceContext),
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.frames_hwctx_size = sizeof(AVDXVA2FramesContext),
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.frames_priv_size = sizeof(DXVA2FramesContext),
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.frames_init = dxva2_frames_init,
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.frames_uninit = dxva2_frames_uninit,
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.frames_get_buffer = dxva2_get_buffer,
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.transfer_get_formats = dxva2_transfer_get_formats,
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.transfer_data_to = dxva2_transfer_data,
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.transfer_data_from = dxva2_transfer_data,
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_DXVA2_VLD, AV_PIX_FMT_NONE },
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};
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