/* * Direct3D 12 HW acceleration video encoder * * Copyright (c) 2024 Intel Corporation * * 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 "libavutil/avassert.h" #include "libavutil/common.h" #include "libavutil/internal.h" #include "libavutil/log.h" #include "libavutil/mem.h" #include "libavutil/pixdesc.h" #include "libavutil/hwcontext_d3d12va_internal.h" #include "libavutil/hwcontext_d3d12va.h" #include "avcodec.h" #include "d3d12va_encode.h" #include "encode.h" const AVCodecHWConfigInternal *const ff_d3d12va_encode_hw_configs[] = { HW_CONFIG_ENCODER_FRAMES(D3D12, D3D12VA), NULL, }; static int d3d12va_fence_completion(AVD3D12VASyncContext *psync_ctx) { uint64_t completion = ID3D12Fence_GetCompletedValue(psync_ctx->fence); if (completion < psync_ctx->fence_value) { if (FAILED(ID3D12Fence_SetEventOnCompletion(psync_ctx->fence, psync_ctx->fence_value, psync_ctx->event))) return AVERROR(EINVAL); WaitForSingleObjectEx(psync_ctx->event, INFINITE, FALSE); } return 0; } static int d3d12va_sync_with_gpu(AVCodecContext *avctx) { D3D12VAEncodeContext *ctx = avctx->priv_data; DX_CHECK(ID3D12CommandQueue_Signal(ctx->command_queue, ctx->sync_ctx.fence, ++ctx->sync_ctx.fence_value)); return d3d12va_fence_completion(&ctx->sync_ctx); fail: return AVERROR(EINVAL); } typedef struct CommandAllocator { ID3D12CommandAllocator *command_allocator; uint64_t fence_value; } CommandAllocator; static int d3d12va_get_valid_command_allocator(AVCodecContext *avctx, ID3D12CommandAllocator **ppAllocator) { HRESULT hr; D3D12VAEncodeContext *ctx = avctx->priv_data; CommandAllocator allocator; if (av_fifo_peek(ctx->allocator_queue, &allocator, 1, 0) >= 0) { uint64_t completion = ID3D12Fence_GetCompletedValue(ctx->sync_ctx.fence); if (completion >= allocator.fence_value) { *ppAllocator = allocator.command_allocator; av_fifo_read(ctx->allocator_queue, &allocator, 1); return 0; } } hr = ID3D12Device_CreateCommandAllocator(ctx->hwctx->device, D3D12_COMMAND_LIST_TYPE_VIDEO_ENCODE, &IID_ID3D12CommandAllocator, (void **)ppAllocator); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create a new command allocator!\n"); return AVERROR(EINVAL); } return 0; } static int d3d12va_discard_command_allocator(AVCodecContext *avctx, ID3D12CommandAllocator *pAllocator, uint64_t fence_value) { D3D12VAEncodeContext *ctx = avctx->priv_data; CommandAllocator allocator = { .command_allocator = pAllocator, .fence_value = fence_value, }; av_fifo_write(ctx->allocator_queue, &allocator, 1); return 0; } static int d3d12va_encode_wait(AVCodecContext *avctx, D3D12VAEncodePicture *pic) { D3D12VAEncodeContext *ctx = avctx->priv_data; FFHWBaseEncodePicture *base_pic = &pic->base; uint64_t completion; av_assert0(base_pic->encode_issued); if (base_pic->encode_complete) { // Already waited for this picture. return 0; } completion = ID3D12Fence_GetCompletedValue(ctx->sync_ctx.fence); if (completion < pic->fence_value) { if (FAILED(ID3D12Fence_SetEventOnCompletion(ctx->sync_ctx.fence, pic->fence_value, ctx->sync_ctx.event))) return AVERROR(EINVAL); WaitForSingleObjectEx(ctx->sync_ctx.event, INFINITE, FALSE); } av_log(avctx, AV_LOG_DEBUG, "Sync to pic %"PRId64"/%"PRId64" " "(input surface %p).\n", base_pic->display_order, base_pic->encode_order, pic->input_surface->texture); av_frame_free(&base_pic->input_image); base_pic->encode_complete = 1; return 0; } static int d3d12va_encode_create_metadata_buffers(AVCodecContext *avctx, D3D12VAEncodePicture *pic) { D3D12VAEncodeContext *ctx = avctx->priv_data; int width = sizeof(D3D12_VIDEO_ENCODER_OUTPUT_METADATA) + sizeof(D3D12_VIDEO_ENCODER_FRAME_SUBREGION_METADATA); D3D12_HEAP_PROPERTIES encoded_meta_props = { .Type = D3D12_HEAP_TYPE_DEFAULT }, resolved_meta_props; D3D12_HEAP_TYPE resolved_heap_type = D3D12_HEAP_TYPE_READBACK; HRESULT hr; D3D12_RESOURCE_DESC meta_desc = { .Dimension = D3D12_RESOURCE_DIMENSION_BUFFER, .Alignment = 0, .Width = ctx->req.MaxEncoderOutputMetadataBufferSize, .Height = 1, .DepthOrArraySize = 1, .MipLevels = 1, .Format = DXGI_FORMAT_UNKNOWN, .SampleDesc = { .Count = 1, .Quality = 0 }, .Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR, .Flags = D3D12_RESOURCE_FLAG_NONE, }; hr = ID3D12Device_CreateCommittedResource(ctx->hwctx->device, &encoded_meta_props, D3D12_HEAP_FLAG_NONE, &meta_desc, D3D12_RESOURCE_STATE_COMMON, NULL, &IID_ID3D12Resource, (void **)&pic->encoded_metadata); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create metadata buffer.\n"); return AVERROR_UNKNOWN; } ctx->hwctx->device->lpVtbl->GetCustomHeapProperties(ctx->hwctx->device, &resolved_meta_props, 0, resolved_heap_type); meta_desc.Width = width; hr = ID3D12Device_CreateCommittedResource(ctx->hwctx->device, &resolved_meta_props, D3D12_HEAP_FLAG_NONE, &meta_desc, D3D12_RESOURCE_STATE_COMMON, NULL, &IID_ID3D12Resource, (void **)&pic->resolved_metadata); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create output metadata buffer.\n"); return AVERROR_UNKNOWN; } return 0; } static int d3d12va_encode_issue(AVCodecContext *avctx, const FFHWBaseEncodePicture *base_pic) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; AVD3D12VAFramesContext *frames_hwctx = base_ctx->input_frames->hwctx; D3D12VAEncodePicture *pic = (D3D12VAEncodePicture *)base_pic; int err, i, j; HRESULT hr; char data[MAX_PARAM_BUFFER_SIZE]; void *ptr; size_t bit_len; ID3D12CommandAllocator *command_allocator = NULL; ID3D12VideoEncodeCommandList2 *cmd_list = ctx->command_list; D3D12_RESOURCE_BARRIER barriers[32] = { 0 }; D3D12_VIDEO_ENCODE_REFERENCE_FRAMES d3d12_refs = { 0 }; D3D12_VIDEO_ENCODER_ENCODEFRAME_INPUT_ARGUMENTS input_args = { .SequenceControlDesc = { .Flags = D3D12_VIDEO_ENCODER_SEQUENCE_CONTROL_FLAG_NONE, .IntraRefreshConfig = { 0 }, .RateControl = ctx->rc, .PictureTargetResolution = ctx->resolution, .SelectedLayoutMode = D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_FULL_FRAME, .FrameSubregionsLayoutData = { 0 }, .CodecGopSequence = ctx->gop, }, .pInputFrame = pic->input_surface->texture, .InputFrameSubresource = 0, }; D3D12_VIDEO_ENCODER_ENCODEFRAME_OUTPUT_ARGUMENTS output_args = { 0 }; D3D12_VIDEO_ENCODER_RESOLVE_METADATA_INPUT_ARGUMENTS input_metadata = { .EncoderCodec = ctx->codec->d3d12_codec, .EncoderProfile = ctx->profile->d3d12_profile, .EncoderInputFormat = frames_hwctx->format, .EncodedPictureEffectiveResolution = ctx->resolution, }; D3D12_VIDEO_ENCODER_RESOLVE_METADATA_OUTPUT_ARGUMENTS output_metadata = { 0 }; memset(data, 0, sizeof(data)); av_log(avctx, AV_LOG_DEBUG, "Issuing encode for pic %"PRId64"/%"PRId64" " "as type %s.\n", base_pic->display_order, base_pic->encode_order, ff_hw_base_encode_get_pictype_name(base_pic->type)); if (base_pic->nb_refs[0] == 0 && base_pic->nb_refs[1] == 0) { av_log(avctx, AV_LOG_DEBUG, "No reference pictures.\n"); } else { av_log(avctx, AV_LOG_DEBUG, "L0 refers to"); for (i = 0; i < base_pic->nb_refs[0]; i++) { av_log(avctx, AV_LOG_DEBUG, " %"PRId64"/%"PRId64, base_pic->refs[0][i]->display_order, base_pic->refs[0][i]->encode_order); } av_log(avctx, AV_LOG_DEBUG, ".\n"); if (base_pic->nb_refs[1]) { av_log(avctx, AV_LOG_DEBUG, "L1 refers to"); for (i = 0; i < base_pic->nb_refs[1]; i++) { av_log(avctx, AV_LOG_DEBUG, " %"PRId64"/%"PRId64, base_pic->refs[1][i]->display_order, base_pic->refs[1][i]->encode_order); } av_log(avctx, AV_LOG_DEBUG, ".\n"); } } av_assert0(!base_pic->encode_issued); for (i = 0; i < base_pic->nb_refs[0]; i++) { av_assert0(base_pic->refs[0][i]); av_assert0(base_pic->refs[0][i]->encode_issued); } for (i = 0; i < base_pic->nb_refs[1]; i++) { av_assert0(base_pic->refs[1][i]); av_assert0(base_pic->refs[1][i]->encode_issued); } av_log(avctx, AV_LOG_DEBUG, "Input surface is %p.\n", pic->input_surface->texture); err = av_hwframe_get_buffer(base_ctx->recon_frames_ref, base_pic->recon_image, 0); if (err < 0) { err = AVERROR(ENOMEM); goto fail; } pic->recon_surface = (AVD3D12VAFrame *)base_pic->recon_image->data[0]; av_log(avctx, AV_LOG_DEBUG, "Recon surface is %p.\n", pic->recon_surface->texture); pic->output_buffer_ref = av_buffer_pool_get(ctx->output_buffer_pool); if (!pic->output_buffer_ref) { err = AVERROR(ENOMEM); goto fail; } pic->output_buffer = (ID3D12Resource *)pic->output_buffer_ref->data; av_log(avctx, AV_LOG_DEBUG, "Output buffer is %p.\n", pic->output_buffer); err = d3d12va_encode_create_metadata_buffers(avctx, pic); if (err < 0) goto fail; if (ctx->codec->init_picture_params) { err = ctx->codec->init_picture_params(avctx, pic); if (err < 0) { av_log(avctx, AV_LOG_ERROR, "Failed to initialise picture " "parameters: %d.\n", err); goto fail; } } if (base_pic->type == FF_HW_PICTURE_TYPE_IDR) { if (ctx->codec->write_sequence_header) { bit_len = 8 * sizeof(data); err = ctx->codec->write_sequence_header(avctx, data, &bit_len); if (err < 0) { av_log(avctx, AV_LOG_ERROR, "Failed to write per-sequence " "header: %d.\n", err); goto fail; } } pic->header_size = (int)bit_len / 8; pic->header_size = pic->header_size % ctx->req.CompressedBitstreamBufferAccessAlignment ? FFALIGN(pic->header_size, ctx->req.CompressedBitstreamBufferAccessAlignment) : pic->header_size; hr = ID3D12Resource_Map(pic->output_buffer, 0, NULL, (void **)&ptr); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto fail; } memcpy(ptr, data, pic->header_size); ID3D12Resource_Unmap(pic->output_buffer, 0, NULL); } d3d12_refs.NumTexture2Ds = base_pic->nb_refs[0] + base_pic->nb_refs[1]; if (d3d12_refs.NumTexture2Ds) { d3d12_refs.ppTexture2Ds = av_calloc(d3d12_refs.NumTexture2Ds, sizeof(*d3d12_refs.ppTexture2Ds)); if (!d3d12_refs.ppTexture2Ds) { err = AVERROR(ENOMEM); goto fail; } i = 0; for (j = 0; j < base_pic->nb_refs[0]; j++) d3d12_refs.ppTexture2Ds[i++] = ((D3D12VAEncodePicture *)base_pic->refs[0][j])->recon_surface->texture; for (j = 0; j < base_pic->nb_refs[1]; j++) d3d12_refs.ppTexture2Ds[i++] = ((D3D12VAEncodePicture *)base_pic->refs[1][j])->recon_surface->texture; } input_args.PictureControlDesc.IntraRefreshFrameIndex = 0; if (base_pic->is_reference) input_args.PictureControlDesc.Flags |= D3D12_VIDEO_ENCODER_PICTURE_CONTROL_FLAG_USED_AS_REFERENCE_PICTURE; input_args.PictureControlDesc.PictureControlCodecData = pic->pic_ctl; input_args.PictureControlDesc.ReferenceFrames = d3d12_refs; input_args.CurrentFrameBitstreamMetadataSize = pic->header_size; output_args.Bitstream.pBuffer = pic->output_buffer; output_args.Bitstream.FrameStartOffset = pic->header_size; output_args.ReconstructedPicture.pReconstructedPicture = pic->recon_surface->texture; output_args.ReconstructedPicture.ReconstructedPictureSubresource = 0; output_args.EncoderOutputMetadata.pBuffer = pic->encoded_metadata; output_args.EncoderOutputMetadata.Offset = 0; input_metadata.HWLayoutMetadata.pBuffer = pic->encoded_metadata; input_metadata.HWLayoutMetadata.Offset = 0; output_metadata.ResolvedLayoutMetadata.pBuffer = pic->resolved_metadata; output_metadata.ResolvedLayoutMetadata.Offset = 0; err = d3d12va_get_valid_command_allocator(avctx, &command_allocator); if (err < 0) goto fail; hr = ID3D12CommandAllocator_Reset(command_allocator); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto fail; } hr = ID3D12VideoEncodeCommandList2_Reset(cmd_list, command_allocator); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto fail; } #define TRANSITION_BARRIER(res, before, after) \ (D3D12_RESOURCE_BARRIER) { \ .Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION, \ .Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE, \ .Transition = { \ .pResource = res, \ .Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES, \ .StateBefore = before, \ .StateAfter = after, \ }, \ } barriers[0] = TRANSITION_BARRIER(pic->input_surface->texture, D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ); barriers[1] = TRANSITION_BARRIER(pic->output_buffer, D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE); barriers[2] = TRANSITION_BARRIER(pic->recon_surface->texture, D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE); barriers[3] = TRANSITION_BARRIER(pic->encoded_metadata, D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE); barriers[4] = TRANSITION_BARRIER(pic->resolved_metadata, D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE); ID3D12VideoEncodeCommandList2_ResourceBarrier(cmd_list, 5, barriers); if (d3d12_refs.NumTexture2Ds) { D3D12_RESOURCE_BARRIER refs_barriers[3]; for (i = 0; i < d3d12_refs.NumTexture2Ds; i++) refs_barriers[i] = TRANSITION_BARRIER(d3d12_refs.ppTexture2Ds[i], D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ); ID3D12VideoEncodeCommandList2_ResourceBarrier(cmd_list, d3d12_refs.NumTexture2Ds, refs_barriers); } ID3D12VideoEncodeCommandList2_EncodeFrame(cmd_list, ctx->encoder, ctx->encoder_heap, &input_args, &output_args); barriers[3] = TRANSITION_BARRIER(pic->encoded_metadata, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE, D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ); ID3D12VideoEncodeCommandList2_ResourceBarrier(cmd_list, 1, &barriers[3]); ID3D12VideoEncodeCommandList2_ResolveEncoderOutputMetadata(cmd_list, &input_metadata, &output_metadata); if (d3d12_refs.NumTexture2Ds) { D3D12_RESOURCE_BARRIER refs_barriers[3]; for (i = 0; i < d3d12_refs.NumTexture2Ds; i++) refs_barriers[i] = TRANSITION_BARRIER(d3d12_refs.ppTexture2Ds[i], D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ, D3D12_RESOURCE_STATE_COMMON); ID3D12VideoEncodeCommandList2_ResourceBarrier(cmd_list, d3d12_refs.NumTexture2Ds, refs_barriers); } barriers[0] = TRANSITION_BARRIER(pic->input_surface->texture, D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ, D3D12_RESOURCE_STATE_COMMON); barriers[1] = TRANSITION_BARRIER(pic->output_buffer, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE, D3D12_RESOURCE_STATE_COMMON); barriers[2] = TRANSITION_BARRIER(pic->recon_surface->texture, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE, D3D12_RESOURCE_STATE_COMMON); barriers[3] = TRANSITION_BARRIER(pic->encoded_metadata, D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ, D3D12_RESOURCE_STATE_COMMON); barriers[4] = TRANSITION_BARRIER(pic->resolved_metadata, D3D12_RESOURCE_STATE_VIDEO_ENCODE_WRITE, D3D12_RESOURCE_STATE_COMMON); ID3D12VideoEncodeCommandList2_ResourceBarrier(cmd_list, 5, barriers); hr = ID3D12VideoEncodeCommandList2_Close(cmd_list); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto fail; } hr = ID3D12CommandQueue_Wait(ctx->command_queue, pic->input_surface->sync_ctx.fence, pic->input_surface->sync_ctx.fence_value); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto fail; } ID3D12CommandQueue_ExecuteCommandLists(ctx->command_queue, 1, (ID3D12CommandList **)&ctx->command_list); hr = ID3D12CommandQueue_Signal(ctx->command_queue, pic->input_surface->sync_ctx.fence, ++pic->input_surface->sync_ctx.fence_value); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto fail; } hr = ID3D12CommandQueue_Signal(ctx->command_queue, ctx->sync_ctx.fence, ++ctx->sync_ctx.fence_value); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto fail; } err = d3d12va_discard_command_allocator(avctx, command_allocator, ctx->sync_ctx.fence_value); if (err < 0) goto fail; pic->fence_value = ctx->sync_ctx.fence_value; if (d3d12_refs.ppTexture2Ds) av_freep(&d3d12_refs.ppTexture2Ds); return 0; fail: if (command_allocator) d3d12va_discard_command_allocator(avctx, command_allocator, ctx->sync_ctx.fence_value); if (d3d12_refs.ppTexture2Ds) av_freep(&d3d12_refs.ppTexture2Ds); if (ctx->codec->free_picture_params) ctx->codec->free_picture_params(pic); av_buffer_unref(&pic->output_buffer_ref); pic->output_buffer = NULL; D3D12_OBJECT_RELEASE(pic->encoded_metadata); D3D12_OBJECT_RELEASE(pic->resolved_metadata); return err; } static int d3d12va_encode_discard(AVCodecContext *avctx, D3D12VAEncodePicture *pic) { FFHWBaseEncodePicture *base_pic = &pic->base; d3d12va_encode_wait(avctx, pic); if (pic->output_buffer_ref) { av_log(avctx, AV_LOG_DEBUG, "Discard output for pic " "%"PRId64"/%"PRId64".\n", base_pic->display_order, base_pic->encode_order); av_buffer_unref(&pic->output_buffer_ref); pic->output_buffer = NULL; } D3D12_OBJECT_RELEASE(pic->encoded_metadata); D3D12_OBJECT_RELEASE(pic->resolved_metadata); return 0; } static int d3d12va_encode_free_rc_params(AVCodecContext *avctx) { D3D12VAEncodeContext *ctx = avctx->priv_data; switch (ctx->rc.Mode) { case D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_CQP: av_freep(&ctx->rc.ConfigParams.pConfiguration_CQP); break; case D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_CBR: av_freep(&ctx->rc.ConfigParams.pConfiguration_CBR); break; case D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_VBR: av_freep(&ctx->rc.ConfigParams.pConfiguration_VBR); break; case D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_QVBR: av_freep(&ctx->rc.ConfigParams.pConfiguration_QVBR); break; default: break; } return 0; } static FFHWBaseEncodePicture *d3d12va_encode_alloc(AVCodecContext *avctx, const AVFrame *frame) { D3D12VAEncodeContext *ctx = avctx->priv_data; D3D12VAEncodePicture *pic; pic = av_mallocz(sizeof(*pic)); if (!pic) return NULL; if (ctx->codec->picture_priv_data_size > 0) { pic->base.priv_data = av_mallocz(ctx->codec->picture_priv_data_size); if (!pic->base.priv_data) { av_freep(&pic); return NULL; } } pic->input_surface = (AVD3D12VAFrame *)frame->data[0]; return &pic->base; } static int d3d12va_encode_free(AVCodecContext *avctx, FFHWBaseEncodePicture *base_pic) { D3D12VAEncodeContext *ctx = avctx->priv_data; D3D12VAEncodePicture *pic = (D3D12VAEncodePicture *)base_pic; if (base_pic->encode_issued) d3d12va_encode_discard(avctx, pic); if (ctx->codec->free_picture_params) ctx->codec->free_picture_params(pic); ff_hw_base_encode_free(base_pic); av_free(pic); return 0; } static int d3d12va_encode_get_buffer_size(AVCodecContext *avctx, D3D12VAEncodePicture *pic, size_t *size) { D3D12_VIDEO_ENCODER_OUTPUT_METADATA *meta = NULL; uint8_t *data; HRESULT hr; int err; hr = ID3D12Resource_Map(pic->resolved_metadata, 0, NULL, (void **)&data); if (FAILED(hr)) { err = AVERROR_UNKNOWN; return err; } meta = (D3D12_VIDEO_ENCODER_OUTPUT_METADATA *)data; if (meta->EncodeErrorFlags != D3D12_VIDEO_ENCODER_ENCODE_ERROR_FLAG_NO_ERROR) { av_log(avctx, AV_LOG_ERROR, "Encode failed %"PRIu64"\n", meta->EncodeErrorFlags); err = AVERROR(EINVAL); return err; } if (meta->EncodedBitstreamWrittenBytesCount == 0) { av_log(avctx, AV_LOG_ERROR, "No bytes were written to encoded bitstream\n"); err = AVERROR(EINVAL); return err; } *size = meta->EncodedBitstreamWrittenBytesCount; ID3D12Resource_Unmap(pic->resolved_metadata, 0, NULL); return 0; } static int d3d12va_encode_get_coded_data(AVCodecContext *avctx, D3D12VAEncodePicture *pic, AVPacket *pkt) { int err; uint8_t *ptr, *mapped_data; size_t total_size = 0; HRESULT hr; err = d3d12va_encode_get_buffer_size(avctx, pic, &total_size); if (err < 0) goto end; total_size += pic->header_size; av_log(avctx, AV_LOG_DEBUG, "Output buffer size %"PRId64"\n", total_size); hr = ID3D12Resource_Map(pic->output_buffer, 0, NULL, (void **)&mapped_data); if (FAILED(hr)) { err = AVERROR_UNKNOWN; goto end; } err = ff_get_encode_buffer(avctx, pkt, total_size, 0); if (err < 0) goto end; ptr = pkt->data; memcpy(ptr, mapped_data, total_size); ID3D12Resource_Unmap(pic->output_buffer, 0, NULL); end: av_buffer_unref(&pic->output_buffer_ref); pic->output_buffer = NULL; return err; } static int d3d12va_encode_output(AVCodecContext *avctx, const FFHWBaseEncodePicture *base_pic, AVPacket *pkt) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodePicture *pic = (D3D12VAEncodePicture *)base_pic; AVPacket *pkt_ptr = pkt; int err; err = d3d12va_encode_wait(avctx, pic); if (err < 0) return err; err = d3d12va_encode_get_coded_data(avctx, pic, pkt); if (err < 0) return err; av_log(avctx, AV_LOG_DEBUG, "Output read for pic %"PRId64"/%"PRId64".\n", base_pic->display_order, base_pic->encode_order); ff_hw_base_encode_set_output_property(base_ctx, avctx, (FFHWBaseEncodePicture *)base_pic, pkt_ptr, 0); return 0; } static int d3d12va_encode_set_profile(AVCodecContext *avctx) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; const D3D12VAEncodeProfile *profile; const AVPixFmtDescriptor *desc; int i, depth; desc = av_pix_fmt_desc_get(base_ctx->input_frames->sw_format); if (!desc) { av_log(avctx, AV_LOG_ERROR, "Invalid input pixfmt (%d).\n", base_ctx->input_frames->sw_format); return AVERROR(EINVAL); } depth = desc->comp[0].depth; for (i = 1; i < desc->nb_components; i++) { if (desc->comp[i].depth != depth) { av_log(avctx, AV_LOG_ERROR, "Invalid input pixfmt (%s).\n", desc->name); return AVERROR(EINVAL); } } av_log(avctx, AV_LOG_VERBOSE, "Input surface format is %s.\n", desc->name); av_assert0(ctx->codec->profiles); for (i = 0; (ctx->codec->profiles[i].av_profile != AV_PROFILE_UNKNOWN); i++) { profile = &ctx->codec->profiles[i]; if (depth != profile->depth || desc->nb_components != profile->nb_components) continue; if (desc->nb_components > 1 && (desc->log2_chroma_w != profile->log2_chroma_w || desc->log2_chroma_h != profile->log2_chroma_h)) continue; if (avctx->profile != profile->av_profile && avctx->profile != AV_PROFILE_UNKNOWN) continue; ctx->profile = profile; break; } if (!ctx->profile) { av_log(avctx, AV_LOG_ERROR, "No usable encoding profile found.\n"); return AVERROR(ENOSYS); } avctx->profile = profile->av_profile; return 0; } static const D3D12VAEncodeRCMode d3d12va_encode_rc_modes[] = { // Bitrate Quality // | Maxrate | HRD/VBV { 0 }, // | | | | { RC_MODE_CQP, "CQP", 0, 0, 1, 0, D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_CQP }, { RC_MODE_CBR, "CBR", 1, 0, 0, 1, D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_CBR }, { RC_MODE_VBR, "VBR", 1, 1, 0, 1, D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_VBR }, { RC_MODE_QVBR, "QVBR", 1, 1, 1, 1, D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_QVBR }, }; static int check_rate_control_support(AVCodecContext *avctx, const D3D12VAEncodeRCMode *rc_mode) { HRESULT hr; D3D12VAEncodeContext *ctx = avctx->priv_data; D3D12_FEATURE_DATA_VIDEO_ENCODER_RATE_CONTROL_MODE d3d12_rc_mode = { .Codec = ctx->codec->d3d12_codec, }; if (!rc_mode->d3d12_mode) return 0; d3d12_rc_mode.IsSupported = 0; d3d12_rc_mode.RateControlMode = rc_mode->d3d12_mode; hr = ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_ENCODER_RATE_CONTROL_MODE, &d3d12_rc_mode, sizeof(d3d12_rc_mode)); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to check rate control support.\n"); return 0; } return d3d12_rc_mode.IsSupported; } static int d3d12va_encode_init_rate_control(AVCodecContext *avctx) { D3D12VAEncodeContext *ctx = avctx->priv_data; int64_t rc_target_bitrate; int64_t rc_peak_bitrate; int rc_quality; int64_t hrd_buffer_size; int64_t hrd_initial_buffer_fullness; int fr_num, fr_den; const D3D12VAEncodeRCMode *rc_mode; // Rate control mode selection: // * If the user has set a mode explicitly with the rc_mode option, // use it and fail if it is not available. // * If an explicit QP option has been set, use CQP. // * If the codec is CQ-only, use CQP. // * If the QSCALE avcodec option is set, use CQP. // * If bitrate and quality are both set, try QVBR. // * If quality is set, try CQP. // * If bitrate and maxrate are set and have the same value, try CBR. // * If a bitrate is set, try VBR, then CBR. // * If no bitrate is set, try CQP. #define TRY_RC_MODE(mode, fail) do { \ rc_mode = &d3d12va_encode_rc_modes[mode]; \ if (!(rc_mode->d3d12_mode && check_rate_control_support(avctx, rc_mode))) { \ if (fail) { \ av_log(avctx, AV_LOG_ERROR, "Driver does not support %s " \ "RC mode.\n", rc_mode->name); \ return AVERROR(EINVAL); \ } \ av_log(avctx, AV_LOG_DEBUG, "Driver does not support %s " \ "RC mode.\n", rc_mode->name); \ rc_mode = NULL; \ } else { \ goto rc_mode_found; \ } \ } while (0) if (ctx->explicit_rc_mode) TRY_RC_MODE(ctx->explicit_rc_mode, 1); if (ctx->explicit_qp) TRY_RC_MODE(RC_MODE_CQP, 1); if (ctx->codec->flags & FF_HW_FLAG_CONSTANT_QUALITY_ONLY) TRY_RC_MODE(RC_MODE_CQP, 1); if (avctx->flags & AV_CODEC_FLAG_QSCALE) TRY_RC_MODE(RC_MODE_CQP, 1); if (avctx->bit_rate > 0 && avctx->global_quality > 0) TRY_RC_MODE(RC_MODE_QVBR, 0); if (avctx->global_quality > 0) { TRY_RC_MODE(RC_MODE_CQP, 0); } if (avctx->bit_rate > 0 && avctx->rc_max_rate == avctx->bit_rate) TRY_RC_MODE(RC_MODE_CBR, 0); if (avctx->bit_rate > 0) { TRY_RC_MODE(RC_MODE_VBR, 0); TRY_RC_MODE(RC_MODE_CBR, 0); } else { TRY_RC_MODE(RC_MODE_CQP, 0); } av_log(avctx, AV_LOG_ERROR, "Driver does not support any " "RC mode compatible with selected options.\n"); return AVERROR(EINVAL); rc_mode_found: if (rc_mode->bitrate) { if (avctx->bit_rate <= 0) { av_log(avctx, AV_LOG_ERROR, "Bitrate must be set for %s " "RC mode.\n", rc_mode->name); return AVERROR(EINVAL); } if (rc_mode->maxrate) { if (avctx->rc_max_rate > 0) { if (avctx->rc_max_rate < avctx->bit_rate) { av_log(avctx, AV_LOG_ERROR, "Invalid bitrate settings: " "bitrate (%"PRId64") must not be greater than " "maxrate (%"PRId64").\n", avctx->bit_rate, avctx->rc_max_rate); return AVERROR(EINVAL); } rc_target_bitrate = avctx->bit_rate; rc_peak_bitrate = avctx->rc_max_rate; } else { // We only have a target bitrate, but this mode requires // that a maximum rate be supplied as well. Since the // user does not want this to be a constraint, arbitrarily // pick a maximum rate of double the target rate. rc_target_bitrate = avctx->bit_rate; rc_peak_bitrate = 2 * avctx->bit_rate; } } else { if (avctx->rc_max_rate > avctx->bit_rate) { av_log(avctx, AV_LOG_WARNING, "Max bitrate is ignored " "in %s RC mode.\n", rc_mode->name); } rc_target_bitrate = avctx->bit_rate; rc_peak_bitrate = 0; } } else { rc_target_bitrate = 0; rc_peak_bitrate = 0; } if (rc_mode->quality) { if (ctx->explicit_qp) { rc_quality = ctx->explicit_qp; } else if (avctx->global_quality > 0) { if (avctx->flags & AV_CODEC_FLAG_QSCALE) rc_quality = avctx->global_quality / FF_QP2LAMBDA; else rc_quality = avctx->global_quality; } else { rc_quality = ctx->codec->default_quality; av_log(avctx, AV_LOG_WARNING, "No quality level set; " "using default (%d).\n", rc_quality); } } else { rc_quality = 0; } if (rc_mode->hrd) { if (avctx->rc_buffer_size) hrd_buffer_size = avctx->rc_buffer_size; else if (avctx->rc_max_rate > 0) hrd_buffer_size = avctx->rc_max_rate; else hrd_buffer_size = avctx->bit_rate; if (avctx->rc_initial_buffer_occupancy) { if (avctx->rc_initial_buffer_occupancy > hrd_buffer_size) { av_log(avctx, AV_LOG_ERROR, "Invalid RC buffer settings: " "must have initial buffer size (%d) <= " "buffer size (%"PRId64").\n", avctx->rc_initial_buffer_occupancy, hrd_buffer_size); return AVERROR(EINVAL); } hrd_initial_buffer_fullness = avctx->rc_initial_buffer_occupancy; } else { hrd_initial_buffer_fullness = hrd_buffer_size * 3 / 4; } } else { if (avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) { av_log(avctx, AV_LOG_WARNING, "Buffering settings are ignored " "in %s RC mode.\n", rc_mode->name); } hrd_buffer_size = 0; hrd_initial_buffer_fullness = 0; } if (rc_target_bitrate > UINT32_MAX || hrd_buffer_size > UINT32_MAX || hrd_initial_buffer_fullness > UINT32_MAX) { av_log(avctx, AV_LOG_ERROR, "RC parameters of 2^32 or " "greater are not supported by D3D12.\n"); return AVERROR(EINVAL); } ctx->rc_quality = rc_quality; av_log(avctx, AV_LOG_VERBOSE, "RC mode: %s.\n", rc_mode->name); if (rc_mode->quality) av_log(avctx, AV_LOG_VERBOSE, "RC quality: %d.\n", rc_quality); if (rc_mode->hrd) { av_log(avctx, AV_LOG_VERBOSE, "RC buffer: %"PRId64" bits, " "initial fullness %"PRId64" bits.\n", hrd_buffer_size, hrd_initial_buffer_fullness); } if (avctx->framerate.num > 0 && avctx->framerate.den > 0) av_reduce(&fr_num, &fr_den, avctx->framerate.num, avctx->framerate.den, 65535); else av_reduce(&fr_num, &fr_den, avctx->time_base.den, avctx->time_base.num, 65535); av_log(avctx, AV_LOG_VERBOSE, "RC framerate: %d/%d (%.2f fps).\n", fr_num, fr_den, (double)fr_num / fr_den); ctx->rc.Flags = D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_NONE; ctx->rc.TargetFrameRate.Numerator = fr_num; ctx->rc.TargetFrameRate.Denominator = fr_den; ctx->rc.Mode = rc_mode->d3d12_mode; switch (rc_mode->mode) { case RC_MODE_CQP: // cqp ConfigParams will be updated in ctx->codec->configure. break; case RC_MODE_CBR: D3D12_VIDEO_ENCODER_RATE_CONTROL_CBR *cbr_ctl; ctx->rc.ConfigParams.DataSize = sizeof(D3D12_VIDEO_ENCODER_RATE_CONTROL_CBR); cbr_ctl = av_mallocz(ctx->rc.ConfigParams.DataSize); if (!cbr_ctl) return AVERROR(ENOMEM); cbr_ctl->TargetBitRate = rc_target_bitrate; cbr_ctl->VBVCapacity = hrd_buffer_size; cbr_ctl->InitialVBVFullness = hrd_initial_buffer_fullness; ctx->rc.Flags |= D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_ENABLE_VBV_SIZES; if (avctx->qmin > 0 || avctx->qmax > 0) { cbr_ctl->MinQP = avctx->qmin; cbr_ctl->MaxQP = avctx->qmax; ctx->rc.Flags |= D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_ENABLE_QP_RANGE; } ctx->rc.ConfigParams.pConfiguration_CBR = cbr_ctl; break; case RC_MODE_VBR: D3D12_VIDEO_ENCODER_RATE_CONTROL_VBR *vbr_ctl; ctx->rc.ConfigParams.DataSize = sizeof(D3D12_VIDEO_ENCODER_RATE_CONTROL_VBR); vbr_ctl = av_mallocz(ctx->rc.ConfigParams.DataSize); if (!vbr_ctl) return AVERROR(ENOMEM); vbr_ctl->TargetAvgBitRate = rc_target_bitrate; vbr_ctl->PeakBitRate = rc_peak_bitrate; vbr_ctl->VBVCapacity = hrd_buffer_size; vbr_ctl->InitialVBVFullness = hrd_initial_buffer_fullness; ctx->rc.Flags |= D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_ENABLE_VBV_SIZES; if (avctx->qmin > 0 || avctx->qmax > 0) { vbr_ctl->MinQP = avctx->qmin; vbr_ctl->MaxQP = avctx->qmax; ctx->rc.Flags |= D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_ENABLE_QP_RANGE; } ctx->rc.ConfigParams.pConfiguration_VBR = vbr_ctl; break; case RC_MODE_QVBR: D3D12_VIDEO_ENCODER_RATE_CONTROL_QVBR *qvbr_ctl; ctx->rc.ConfigParams.DataSize = sizeof(D3D12_VIDEO_ENCODER_RATE_CONTROL_QVBR); qvbr_ctl = av_mallocz(ctx->rc.ConfigParams.DataSize); if (!qvbr_ctl) return AVERROR(ENOMEM); qvbr_ctl->TargetAvgBitRate = rc_target_bitrate; qvbr_ctl->PeakBitRate = rc_peak_bitrate; qvbr_ctl->ConstantQualityTarget = rc_quality; if (avctx->qmin > 0 || avctx->qmax > 0) { qvbr_ctl->MinQP = avctx->qmin; qvbr_ctl->MaxQP = avctx->qmax; ctx->rc.Flags |= D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_ENABLE_QP_RANGE; } ctx->rc.ConfigParams.pConfiguration_QVBR = qvbr_ctl; break; default: break; } return 0; } static int d3d12va_encode_init_gop_structure(AVCodecContext *avctx) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; uint32_t ref_l0, ref_l1; int err; HRESULT hr; D3D12_FEATURE_DATA_VIDEO_ENCODER_CODEC_PICTURE_CONTROL_SUPPORT support; union { D3D12_VIDEO_ENCODER_CODEC_PICTURE_CONTROL_SUPPORT_H264 h264; D3D12_VIDEO_ENCODER_CODEC_PICTURE_CONTROL_SUPPORT_HEVC hevc; } codec_support; support.NodeIndex = 0; support.Codec = ctx->codec->d3d12_codec; support.Profile = ctx->profile->d3d12_profile; switch (ctx->codec->d3d12_codec) { case D3D12_VIDEO_ENCODER_CODEC_H264: support.PictureSupport.DataSize = sizeof(codec_support.h264); support.PictureSupport.pH264Support = &codec_support.h264; break; case D3D12_VIDEO_ENCODER_CODEC_HEVC: support.PictureSupport.DataSize = sizeof(codec_support.hevc); support.PictureSupport.pHEVCSupport = &codec_support.hevc; break; default: av_assert0(0); } hr = ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_ENCODER_CODEC_PICTURE_CONTROL_SUPPORT, &support, sizeof(support)); if (FAILED(hr)) return AVERROR(EINVAL); if (support.IsSupported) { switch (ctx->codec->d3d12_codec) { case D3D12_VIDEO_ENCODER_CODEC_H264: ref_l0 = FFMIN(support.PictureSupport.pH264Support->MaxL0ReferencesForP, support.PictureSupport.pH264Support->MaxL1ReferencesForB); ref_l1 = support.PictureSupport.pH264Support->MaxL1ReferencesForB; break; case D3D12_VIDEO_ENCODER_CODEC_HEVC: ref_l0 = FFMIN(support.PictureSupport.pHEVCSupport->MaxL0ReferencesForP, support.PictureSupport.pHEVCSupport->MaxL1ReferencesForB); ref_l1 = support.PictureSupport.pHEVCSupport->MaxL1ReferencesForB; break; default: av_assert0(0); } } else { ref_l0 = ref_l1 = 0; } if (ref_l0 > 0 && ref_l1 > 0 && ctx->bi_not_empty) { base_ctx->p_to_gpb = 1; av_log(avctx, AV_LOG_VERBOSE, "Driver does not support P-frames, " "replacing them with B-frames.\n"); } err = ff_hw_base_init_gop_structure(base_ctx, avctx, ref_l0, ref_l1, ctx->codec->flags, 0); if (err < 0) return err; return 0; } static int d3d12va_create_encoder(AVCodecContext *avctx) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; AVD3D12VAFramesContext *frames_hwctx = base_ctx->input_frames->hwctx; HRESULT hr; D3D12_VIDEO_ENCODER_DESC desc = { .NodeMask = 0, .Flags = D3D12_VIDEO_ENCODER_FLAG_NONE, .EncodeCodec = ctx->codec->d3d12_codec, .EncodeProfile = ctx->profile->d3d12_profile, .InputFormat = frames_hwctx->format, .CodecConfiguration = ctx->codec_conf, .MaxMotionEstimationPrecision = D3D12_VIDEO_ENCODER_MOTION_ESTIMATION_PRECISION_MODE_MAXIMUM, }; hr = ID3D12VideoDevice3_CreateVideoEncoder(ctx->video_device3, &desc, &IID_ID3D12VideoEncoder, (void **)&ctx->encoder); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create encoder.\n"); return AVERROR(EINVAL); } return 0; } static int d3d12va_create_encoder_heap(AVCodecContext *avctx) { D3D12VAEncodeContext *ctx = avctx->priv_data; HRESULT hr; D3D12_VIDEO_ENCODER_HEAP_DESC desc = { .NodeMask = 0, .Flags = D3D12_VIDEO_ENCODER_FLAG_NONE, .EncodeCodec = ctx->codec->d3d12_codec, .EncodeProfile = ctx->profile->d3d12_profile, .EncodeLevel = ctx->level, .ResolutionsListCount = 1, .pResolutionList = &ctx->resolution, }; hr = ID3D12VideoDevice3_CreateVideoEncoderHeap(ctx->video_device3, &desc, &IID_ID3D12VideoEncoderHeap, (void **)&ctx->encoder_heap); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create encoder heap.\n"); return AVERROR(EINVAL); } return 0; } static void d3d12va_encode_free_buffer(void *opaque, uint8_t *data) { ID3D12Resource *pResource; pResource = (ID3D12Resource *)data; D3D12_OBJECT_RELEASE(pResource); } static AVBufferRef *d3d12va_encode_alloc_output_buffer(void *opaque, size_t size) { AVCodecContext *avctx = opaque; FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; ID3D12Resource *pResource = NULL; HRESULT hr; AVBufferRef *ref; D3D12_HEAP_PROPERTIES heap_props; D3D12_HEAP_TYPE heap_type = D3D12_HEAP_TYPE_READBACK; D3D12_RESOURCE_DESC desc = { .Dimension = D3D12_RESOURCE_DIMENSION_BUFFER, .Alignment = 0, .Width = FFALIGN(3 * base_ctx->surface_width * base_ctx->surface_height + (1 << 16), D3D12_TEXTURE_DATA_PLACEMENT_ALIGNMENT), .Height = 1, .DepthOrArraySize = 1, .MipLevels = 1, .Format = DXGI_FORMAT_UNKNOWN, .SampleDesc = { .Count = 1, .Quality = 0 }, .Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR, .Flags = D3D12_RESOURCE_FLAG_NONE, }; ctx->hwctx->device->lpVtbl->GetCustomHeapProperties(ctx->hwctx->device, &heap_props, 0, heap_type); hr = ID3D12Device_CreateCommittedResource(ctx->hwctx->device, &heap_props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_COMMON, NULL, &IID_ID3D12Resource, (void **)&pResource); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create d3d12 buffer.\n"); return NULL; } ref = av_buffer_create((uint8_t *)(uintptr_t)pResource, sizeof(pResource), &d3d12va_encode_free_buffer, avctx, AV_BUFFER_FLAG_READONLY); if (!ref) { D3D12_OBJECT_RELEASE(pResource); return NULL; } return ref; } static int d3d12va_encode_prepare_output_buffers(AVCodecContext *avctx) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; AVD3D12VAFramesContext *frames_ctx = base_ctx->input_frames->hwctx; HRESULT hr; ctx->req.NodeIndex = 0; ctx->req.Codec = ctx->codec->d3d12_codec; ctx->req.Profile = ctx->profile->d3d12_profile; ctx->req.InputFormat = frames_ctx->format; ctx->req.PictureTargetResolution = ctx->resolution; hr = ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_ENCODER_RESOURCE_REQUIREMENTS, &ctx->req, sizeof(ctx->req)); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to check encoder resource requirements support.\n"); return AVERROR(EINVAL); } if (!ctx->req.IsSupported) { av_log(avctx, AV_LOG_ERROR, "Encoder resource requirements unsupported.\n"); return AVERROR(EINVAL); } ctx->output_buffer_pool = av_buffer_pool_init2(sizeof(ID3D12Resource *), avctx, &d3d12va_encode_alloc_output_buffer, NULL); if (!ctx->output_buffer_pool) return AVERROR(ENOMEM); return 0; } static int d3d12va_encode_create_command_objects(AVCodecContext *avctx) { D3D12VAEncodeContext *ctx = avctx->priv_data; ID3D12CommandAllocator *command_allocator = NULL; int err; HRESULT hr; D3D12_COMMAND_QUEUE_DESC queue_desc = { .Type = D3D12_COMMAND_LIST_TYPE_VIDEO_ENCODE, .Priority = 0, .Flags = D3D12_COMMAND_QUEUE_FLAG_NONE, .NodeMask = 0, }; ctx->allocator_queue = av_fifo_alloc2(D3D12VA_VIDEO_ENC_ASYNC_DEPTH, sizeof(CommandAllocator), AV_FIFO_FLAG_AUTO_GROW); if (!ctx->allocator_queue) return AVERROR(ENOMEM); hr = ID3D12Device_CreateFence(ctx->hwctx->device, 0, D3D12_FENCE_FLAG_NONE, &IID_ID3D12Fence, (void **)&ctx->sync_ctx.fence); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create fence(%lx)\n", (long)hr); err = AVERROR_UNKNOWN; goto fail; } ctx->sync_ctx.event = CreateEvent(NULL, FALSE, FALSE, NULL); if (!ctx->sync_ctx.event) goto fail; err = d3d12va_get_valid_command_allocator(avctx, &command_allocator); if (err < 0) goto fail; hr = ID3D12Device_CreateCommandQueue(ctx->hwctx->device, &queue_desc, &IID_ID3D12CommandQueue, (void **)&ctx->command_queue); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create command queue(%lx)\n", (long)hr); err = AVERROR_UNKNOWN; goto fail; } hr = ID3D12Device_CreateCommandList(ctx->hwctx->device, 0, queue_desc.Type, command_allocator, NULL, &IID_ID3D12CommandList, (void **)&ctx->command_list); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to create command list(%lx)\n", (long)hr); err = AVERROR_UNKNOWN; goto fail; } hr = ID3D12VideoEncodeCommandList2_Close(ctx->command_list); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "Failed to close the command list(%lx)\n", (long)hr); err = AVERROR_UNKNOWN; goto fail; } ID3D12CommandQueue_ExecuteCommandLists(ctx->command_queue, 1, (ID3D12CommandList **)&ctx->command_list); err = d3d12va_sync_with_gpu(avctx); if (err < 0) goto fail; err = d3d12va_discard_command_allocator(avctx, command_allocator, ctx->sync_ctx.fence_value); if (err < 0) goto fail; return 0; fail: D3D12_OBJECT_RELEASE(command_allocator); return err; } static int d3d12va_encode_create_recon_frames(AVCodecContext *avctx) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; AVD3D12VAFramesContext *hwctx; enum AVPixelFormat recon_format; int err; err = ff_hw_base_get_recon_format(base_ctx, NULL, &recon_format); if (err < 0) return err; base_ctx->recon_frames_ref = av_hwframe_ctx_alloc(base_ctx->device_ref); if (!base_ctx->recon_frames_ref) return AVERROR(ENOMEM); base_ctx->recon_frames = (AVHWFramesContext *)base_ctx->recon_frames_ref->data; hwctx = (AVD3D12VAFramesContext *)base_ctx->recon_frames->hwctx; base_ctx->recon_frames->format = AV_PIX_FMT_D3D12; base_ctx->recon_frames->sw_format = recon_format; base_ctx->recon_frames->width = base_ctx->surface_width; base_ctx->recon_frames->height = base_ctx->surface_height; hwctx->flags = D3D12_RESOURCE_FLAG_VIDEO_ENCODE_REFERENCE_ONLY | D3D12_RESOURCE_FLAG_DENY_SHADER_RESOURCE; err = av_hwframe_ctx_init(base_ctx->recon_frames_ref); if (err < 0) { av_log(avctx, AV_LOG_ERROR, "Failed to initialise reconstructed " "frame context: %d.\n", err); return err; } return 0; } static const FFHWEncodePictureOperation d3d12va_type = { .alloc = &d3d12va_encode_alloc, .issue = &d3d12va_encode_issue, .output = &d3d12va_encode_output, .free = &d3d12va_encode_free, }; int ff_d3d12va_encode_receive_packet(AVCodecContext *avctx, AVPacket *pkt) { return ff_hw_base_encode_receive_packet(avctx->priv_data, avctx, pkt); } int ff_d3d12va_encode_init(AVCodecContext *avctx) { FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; D3D12_FEATURE_DATA_VIDEO_FEATURE_AREA_SUPPORT support = { 0 }; int err; HRESULT hr; err = ff_hw_base_encode_init(avctx, base_ctx); if (err < 0) goto fail; base_ctx->op = &d3d12va_type; ctx->hwctx = base_ctx->device->hwctx; ctx->resolution.Width = base_ctx->input_frames->width; ctx->resolution.Height = base_ctx->input_frames->height; hr = ID3D12Device_QueryInterface(ctx->hwctx->device, &IID_ID3D12Device3, (void **)&ctx->device3); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "ID3D12Device3 interface is not supported.\n"); err = AVERROR_UNKNOWN; goto fail; } hr = ID3D12Device3_QueryInterface(ctx->device3, &IID_ID3D12VideoDevice3, (void **)&ctx->video_device3); if (FAILED(hr)) { av_log(avctx, AV_LOG_ERROR, "ID3D12VideoDevice3 interface is not supported.\n"); err = AVERROR_UNKNOWN; goto fail; } if (FAILED(ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_FEATURE_AREA_SUPPORT, &support, sizeof(support))) && !support.VideoEncodeSupport) { av_log(avctx, AV_LOG_ERROR, "D3D12 video device has no video encoder support.\n"); err = AVERROR(EINVAL); goto fail; } err = d3d12va_encode_set_profile(avctx); if (err < 0) goto fail; err = d3d12va_encode_init_rate_control(avctx); if (err < 0) goto fail; if (ctx->codec->get_encoder_caps) { err = ctx->codec->get_encoder_caps(avctx); if (err < 0) goto fail; } err = d3d12va_encode_init_gop_structure(avctx); if (err < 0) goto fail; if (!(ctx->codec->flags & FF_HW_FLAG_SLICE_CONTROL) && avctx->slices > 0) { av_log(avctx, AV_LOG_WARNING, "Multiple slices were requested " "but this codec does not support controlling slices.\n"); } err = d3d12va_encode_create_command_objects(avctx); if (err < 0) goto fail; err = d3d12va_encode_create_recon_frames(avctx); if (err < 0) goto fail; err = d3d12va_encode_prepare_output_buffers(avctx); if (err < 0) goto fail; if (ctx->codec->configure) { err = ctx->codec->configure(avctx); if (err < 0) goto fail; } if (ctx->codec->init_sequence_params) { err = ctx->codec->init_sequence_params(avctx); if (err < 0) { av_log(avctx, AV_LOG_ERROR, "Codec sequence initialisation " "failed: %d.\n", err); goto fail; } } if (ctx->codec->set_level) { err = ctx->codec->set_level(avctx); if (err < 0) goto fail; } base_ctx->output_delay = base_ctx->b_per_p; base_ctx->decode_delay = base_ctx->max_b_depth; err = d3d12va_create_encoder(avctx); if (err < 0) goto fail; err = d3d12va_create_encoder_heap(avctx); if (err < 0) goto fail; base_ctx->async_encode = 1; base_ctx->encode_fifo = av_fifo_alloc2(base_ctx->async_depth, sizeof(D3D12VAEncodePicture *), 0); if (!base_ctx->encode_fifo) return AVERROR(ENOMEM); return 0; fail: return err; } int ff_d3d12va_encode_close(AVCodecContext *avctx) { int num_allocator = 0; FFHWBaseEncodeContext *base_ctx = avctx->priv_data; D3D12VAEncodeContext *ctx = avctx->priv_data; FFHWBaseEncodePicture *pic, *next; CommandAllocator allocator; if (!base_ctx->frame) return 0; for (pic = base_ctx->pic_start; pic; pic = next) { next = pic->next; d3d12va_encode_free(avctx, pic); } d3d12va_encode_free_rc_params(avctx); av_buffer_pool_uninit(&ctx->output_buffer_pool); D3D12_OBJECT_RELEASE(ctx->command_list); D3D12_OBJECT_RELEASE(ctx->command_queue); if (ctx->allocator_queue) { while (av_fifo_read(ctx->allocator_queue, &allocator, 1) >= 0) { num_allocator++; D3D12_OBJECT_RELEASE(allocator.command_allocator); } av_log(avctx, AV_LOG_VERBOSE, "Total number of command allocators reused: %d\n", num_allocator); } av_fifo_freep2(&ctx->allocator_queue); D3D12_OBJECT_RELEASE(ctx->sync_ctx.fence); if (ctx->sync_ctx.event) CloseHandle(ctx->sync_ctx.event); D3D12_OBJECT_RELEASE(ctx->encoder_heap); D3D12_OBJECT_RELEASE(ctx->encoder); D3D12_OBJECT_RELEASE(ctx->video_device3); D3D12_OBJECT_RELEASE(ctx->device3); ff_hw_base_encode_close(base_ctx); return 0; }