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ffmpeg/libavcodec/d3d12va_encode.c
Tong Wu b1d410716b lavc/d3d12va_encode: trim header alignment at output 
It is d3d12va's requirement that the FrameStartOffset must be aligned as
per hardware limitation. However, we could trim this alignment at output
to reduce coded size. A aligned_header_size is added to
D3D12VAEncodePicture.

Signed-off-by: Tong Wu <wutong1208@outlook.com>
2024-07-28 17:50:30 +02:00

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/*
* 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->aligned_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->aligned_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->aligned_header_size;
output_args.Bitstream.pBuffer = pic->output_buffer;
output_args.Bitstream.FrameStartOffset = pic->aligned_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, pic->header_size);
ptr += pic->header_size;
mapped_data += pic->aligned_header_size;
total_size -= pic->header_size;
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;
}
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