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gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12decoder.cpp
Seungha Yang 9daa541816 d3d12decoder: Fix potential use after free 
A DPB buffer held by codec picture object may not be writable
at the moment, then gst_buffer_make_writable() will unref passed buffer.

Specifically, the use after free or double free can happen if:
* Crop meta of buffer copy is required because of non-zero
  top-left crop position
* zero-copy is possible with crop meta
* A picture was duplicated, interlaced h264 stream for example

Interlaced h264 stream with non-zero top-left crop position
is not very common but it's possible configuration in theory.

Thus gst_buffer_make_writable() should be called with
GstVideoCodecFrame.output_buffer directly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6710>
2024-04-22 15:14:13 +01:00

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/* GStreamer
* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <directx/d3dx12.h>
#include "gstd3d12decoder.h"
#include <gst/base/gstqueuearray.h>
#include <wrl.h>
#include <string.h>
#include <mutex>
#include <set>
#include <vector>
#include <queue>
#include <string>
#include <vector>
#include <memory>
#include <algorithm>
#include <atomic>
GST_DEBUG_CATEGORY_EXTERN (gst_d3d12_decoder_debug);
#define GST_CAT_DEFAULT gst_d3d12_decoder_debug
struct DecoderFormat
{
GstDxvaCodec codec;
const GUID decode_profile;
DXGI_FORMAT format[3];
};
static const DecoderFormat format_list[] = {
{GST_DXVA_CODEC_MPEG2, D3D12_VIDEO_DECODE_PROFILE_MPEG2,
{DXGI_FORMAT_NV12, DXGI_FORMAT_UNKNOWN,}},
{GST_DXVA_CODEC_MPEG2, D3D12_VIDEO_DECODE_PROFILE_MPEG1_AND_MPEG2,
{DXGI_FORMAT_NV12, DXGI_FORMAT_UNKNOWN,}},
{GST_DXVA_CODEC_H264, D3D12_VIDEO_DECODE_PROFILE_H264,
{DXGI_FORMAT_NV12, DXGI_FORMAT_UNKNOWN,}},
{GST_DXVA_CODEC_H265, D3D12_VIDEO_DECODE_PROFILE_HEVC_MAIN,
{DXGI_FORMAT_NV12, DXGI_FORMAT_UNKNOWN,}},
{GST_DXVA_CODEC_H265, D3D12_VIDEO_DECODE_PROFILE_HEVC_MAIN10,
DXGI_FORMAT_P010},
{GST_DXVA_CODEC_VP8, D3D12_VIDEO_DECODE_PROFILE_VP8,
{DXGI_FORMAT_NV12, DXGI_FORMAT_UNKNOWN,}},
{GST_DXVA_CODEC_VP9, D3D12_VIDEO_DECODE_PROFILE_VP9,
{DXGI_FORMAT_NV12, DXGI_FORMAT_UNKNOWN,}},
{GST_DXVA_CODEC_VP9, D3D12_VIDEO_DECODE_PROFILE_VP9_10BIT_PROFILE2,
{DXGI_FORMAT_P010, DXGI_FORMAT_UNKNOWN,}},
{GST_DXVA_CODEC_AV1, D3D12_VIDEO_DECODE_PROFILE_AV1_PROFILE0,
{DXGI_FORMAT_NV12, DXGI_FORMAT_P010}},
};
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
class GstD3D12Dpb
{
public:
GstD3D12Dpb (guint8 size) : size_(size)
{
textures_.resize (size);
subresources_.resize (size);
heaps_.resize (size);
for (guint i = 0; i < size; i++) {
dxva_id_.push (i);
textures_[i] = nullptr;
subresources_[i] = 0;
heaps_[i] = nullptr;
}
}
guint8 Acquire (GstD3D12Memory * mem, ID3D12VideoDecoderHeap * heap)
{
std::unique_lock <std::mutex> lk (lock_);
while (dxva_id_.empty ())
cond_.wait (lk);
guint8 ret = dxva_id_.front ();
dxva_id_.pop ();
GstD3D12Memory *dmem;
ID3D12Resource *resource;
UINT subresource = 0;
dmem = GST_D3D12_MEMORY_CAST (mem);
resource = gst_d3d12_memory_get_resource_handle (dmem);
gst_d3d12_memory_get_subresource_index (dmem, 0, &subresource);
textures_[ret] = resource;
subresources_[ret] = subresource;
heaps_[ret] = heap;
return ret;
}
void Release (guint8 id)
{
std::lock_guard <std::mutex> lk (lock_);
if (id == 0xff || id >= size_) {
GST_WARNING ("Unexpected id %d", id);
return;
}
dxva_id_.push (id);
textures_[id] = nullptr;
subresources_[id] = 0;
heaps_[id] = nullptr;
cond_.notify_one ();
}
void GetReferenceFrames (D3D12_VIDEO_DECODE_REFERENCE_FRAMES & frames)
{
frames.NumTexture2Ds = size_;
frames.ppTexture2Ds = textures_.data ();
frames.pSubresources = subresources_.data ();
frames.ppHeaps = heaps_.data ();
}
guint8 GetSize ()
{
return size_;
}
ID3D12Resource ** GetTextures ()
{
return &textures_[0];
}
UINT * GetSubresources ()
{
return &subresources_[0];
}
ID3D12VideoDecoderHeap ** GetHeaps ()
{
return &heaps_[0];
}
private:
std::queue<guint8> dxva_id_;
std::mutex lock_;
std::condition_variable cond_;
guint size_;
std::vector<ID3D12Resource *> textures_;
std::vector<UINT> subresources_;
std::vector<ID3D12VideoDecoderHeap *> heaps_;
bool flushing = false;
};
struct GstD3D12DecoderPicture : public GstMiniObject
{
GstD3D12DecoderPicture (GstBuffer * dpb_buf, GstBuffer * out_buf,
std::shared_ptr<GstD3D12Dpb> d3d12_dpb, ID3D12VideoDecoder * dec,
ID3D12VideoDecoderHeap * decoder_heap, guint8 dxva_id)
: buffer(dpb_buf), output_buffer(out_buf)
, decoder(dec), heap(decoder_heap), dpb(d3d12_dpb), view_id(dxva_id) {}
~GstD3D12DecoderPicture ()
{
auto d3d12_dpb = dpb.lock ();
if (d3d12_dpb)
d3d12_dpb->Release (view_id);
if (buffer)
gst_buffer_unref (buffer);
if (output_buffer)
gst_buffer_unref (output_buffer);
}
GstBuffer *buffer;
GstBuffer *output_buffer;
ComPtr<ID3D12VideoDecoder> decoder;
ComPtr<ID3D12VideoDecoderHeap> heap;
std::weak_ptr<GstD3D12Dpb> dpb;
guint64 fence_val = 0;
guint8 view_id;
};
static GType gst_d3d12_decoder_picture_get_type (void);
#define GST_TYPE_D3D12_DECODER_PICTURE (gst_d3d12_decoder_picture_get_type ())
GST_DEFINE_MINI_OBJECT_TYPE (GstD3D12DecoderPicture, gst_d3d12_decoder_picture);
enum GstD3D12DecoderOutputType
{
GST_D3D12_DECODER_OUTPUT_UNKNOWN = 0,
GST_D3D12_DECODER_OUTPUT_SYSTEM = (1 << 0),
GST_D3D12_DECODER_OUTPUT_D3D12 = (1 << 1),
};
DEFINE_ENUM_FLAG_OPERATORS (GstD3D12DecoderOutputType);
constexpr UINT64 ASYNC_DEPTH = 4;
struct DecoderCmdData
{
DecoderCmdData ()
{
event_handle = CreateEventEx (nullptr, nullptr, 0, EVENT_ALL_ACCESS);
}
~DecoderCmdData ()
{
CloseHandle (event_handle);
gst_clear_object (&ca_pool);
gst_clear_object (&queue);
}
ComPtr<ID3D12Device> device;
ComPtr<ID3D12VideoDevice> video_device;
ComPtr<ID3D12VideoDecodeCommandList> cl;
GstD3D12CommandQueue *queue = nullptr;
GstD3D12CommandAllocatorPool *ca_pool = nullptr;
/* Fence to wait at command record thread */
HANDLE event_handle;
UINT64 fence_val = 0;
};
struct DecoderOutputData
{
GstVideoDecoder *decoder = nullptr;
GstVideoCodecFrame *frame = nullptr;
GstCodecPicture *picture = nullptr;
gint width = 0;
gint height = 0;
GstVideoBufferFlags buffer_flags = (GstVideoBufferFlags) 0;
};
struct DecoderSessionData
{
DecoderSessionData ()
{
output_queue = gst_queue_array_new_for_struct (sizeof (DecoderOutputData),
16);
}
~DecoderSessionData ()
{
if (dpb_pool) {
gst_buffer_pool_set_active (dpb_pool, FALSE);
gst_object_unref (dpb_pool);
}
if (output_pool) {
gst_buffer_pool_set_active (output_pool, FALSE);
gst_object_unref (output_pool);
}
if (input_state)
gst_video_codec_state_unref (input_state);
if (output_state)
gst_video_codec_state_unref (output_state);
gst_queue_array_free (output_queue);
}
D3D12_VIDEO_DECODER_DESC decoder_desc = {};
ComPtr<ID3D12VideoDecoder> decoder;
D3D12_VIDEO_DECODER_HEAP_DESC heap_desc = {};
ComPtr<ID3D12VideoDecoderHeap> heap;
std::shared_ptr<GstD3D12Dpb> dpb;
ComPtr<ID3D12Resource> staging;
GstBufferPool *dpb_pool = nullptr;
/* Used for output if reference-only texture is required */
GstBufferPool *output_pool = nullptr;
GstVideoCodecState *input_state = nullptr;
GstVideoCodecState *output_state = nullptr;
gint aligned_width = 0;
gint aligned_height = 0;
guint dpb_size = 0;
GstVideoInfo info;
GstVideoInfo output_info;
gint crop_x = 0;
gint crop_y = 0;
gint coded_width = 0;
gint coded_height = 0;
DXGI_FORMAT decoder_format = DXGI_FORMAT_UNKNOWN;
bool need_crop = false;
bool use_crop_meta = false;
bool array_of_textures = false;
bool reference_only = false;
GstD3D12DecoderOutputType output_type = GST_D3D12_DECODER_OUTPUT_SYSTEM;
D3D12_FEATURE_DATA_VIDEO_DECODE_SUPPORT support = { 0, };
/* For staging */
D3D12_PLACED_SUBRESOURCE_FOOTPRINT layout[GST_VIDEO_MAX_PLANES] = { 0, };
std::mutex queue_lock;
std::condition_variable queue_cond;
GstQueueArray *output_queue;
std::recursive_mutex lock;
};
struct GstD3D12DecoderPrivate
{
GstD3D12DecoderPrivate ()
{
copy_event_handle = CreateEventEx (nullptr, nullptr, 0, EVENT_ALL_ACCESS);
fence_data_pool = gst_d3d12_fence_data_pool_new ();
}
~GstD3D12DecoderPrivate ()
{
CloseHandle (copy_event_handle);
gst_clear_object (&fence_data_pool);
}
std::mutex lock;
std::recursive_mutex context_lock;
std::unique_ptr<DecoderCmdData> cmd;
std::unique_ptr<DecoderSessionData> session;
GThread *output_thread = nullptr;
std::atomic<bool> flushing;
std::atomic<GstFlowReturn> last_flow;
HANDLE copy_event_handle;
GstD3D12FenceDataPool *fence_data_pool;
std::vector<D3D12_RESOURCE_BARRIER> pre_barriers;
std::vector<D3D12_RESOURCE_BARRIER> post_barriers;
std::vector < GstD3D12DecoderPicture * >configured_ref_pics;
};
/* *INDENT-ON* */
struct _GstD3D12Decoder
{
GstObject parent;
GstDxvaCodec codec;
GstD3D12Device *device;
gint64 adapter_luid;
GstD3D12DecoderPrivate *priv;
};
static void gst_d3d12_decoder_finalize (GObject * object);
static gpointer gst_d3d12_decoder_output_loop (GstD3D12Decoder * self);
#define parent_class gst_d3d12_decoder_parent_class
G_DEFINE_TYPE (GstD3D12Decoder, gst_d3d12_decoder, GST_TYPE_OBJECT);
static void
gst_d3d12_decoder_class_init (GstD3D12DecoderClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = gst_d3d12_decoder_finalize;
}
static void
gst_d3d12_decoder_init (GstD3D12Decoder * self)
{
self->priv = new GstD3D12DecoderPrivate ();
}
static void
gst_d3d12_decoder_finalize (GObject * object)
{
auto self = GST_D3D12_DECODER (object);
gst_clear_object (&self->device);
delete self->priv;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
GstD3D12Decoder *
gst_d3d12_decoder_new (GstDxvaCodec codec, gint64 adapter_luid)
{
GstD3D12Decoder *self;
g_return_val_if_fail (codec > GST_DXVA_CODEC_NONE, nullptr);
g_return_val_if_fail (codec < GST_DXVA_CODEC_LAST, nullptr);
self = (GstD3D12Decoder *) g_object_new (GST_TYPE_D3D12_DECODER, nullptr);
self->codec = codec;
self->adapter_luid = adapter_luid;
return self;
}
gboolean
gst_d3d12_decoder_open (GstD3D12Decoder * decoder, GstElement * element)
{
if (!gst_d3d12_ensure_element_data_for_adapter_luid (element,
decoder->adapter_luid, &decoder->device)) {
GST_ERROR_OBJECT (element, "Cannot create d3d12device");
return FALSE;
}
auto priv = decoder->priv;
auto cmd = std::make_unique < DecoderCmdData > ();
HRESULT hr;
cmd->device = gst_d3d12_device_get_device_handle (decoder->device);
hr = cmd->device.As (&cmd->video_device);
if (!gst_d3d12_result (hr, decoder->device)) {
GST_ERROR_OBJECT (element, "ID3D12VideoDevice interface is unavailable");
return FALSE;
}
D3D12_COMMAND_QUEUE_DESC desc = { };
desc.Type = D3D12_COMMAND_LIST_TYPE_VIDEO_DECODE;
desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
cmd->queue = gst_d3d12_command_queue_new (decoder->device, &desc, 4);
if (!cmd->queue) {
GST_ERROR_OBJECT (element, "Couldn't create command queue");
return FALSE;
}
cmd->ca_pool = gst_d3d12_command_allocator_pool_new (decoder->device,
D3D12_COMMAND_LIST_TYPE_VIDEO_DECODE);
priv->cmd = std::move (cmd);
priv->flushing = false;
return TRUE;
}
GstFlowReturn
gst_d3d12_decoder_drain (GstD3D12Decoder * decoder, GstVideoDecoder * videodec)
{
auto priv = decoder->priv;
GST_DEBUG_OBJECT (decoder, "Draining");
if (priv->cmd) {
gst_d3d12_command_queue_fence_wait (priv->cmd->queue, priv->cmd->fence_val,
priv->cmd->event_handle);
}
GST_VIDEO_DECODER_STREAM_UNLOCK (videodec);
if (priv->output_thread && priv->session) {
auto empty_data = DecoderOutputData ();
std::lock_guard < std::mutex > lk (priv->session->queue_lock);
gst_queue_array_push_tail_struct (priv->session->output_queue, &empty_data);
priv->session->queue_cond.notify_one ();
}
g_clear_pointer (&priv->output_thread, g_thread_join);
GST_VIDEO_DECODER_STREAM_LOCK (videodec);
GST_DEBUG_OBJECT (decoder, "Drain done");
return GST_FLOW_OK;
}
gboolean
gst_d3d12_decoder_flush (GstD3D12Decoder * decoder, GstVideoDecoder * videodec)
{
auto priv = decoder->priv;
GST_DEBUG_OBJECT (decoder, "Flushing");
priv->flushing = true;
gst_d3d12_decoder_drain (decoder, videodec);
priv->flushing = false;
priv->last_flow = GST_FLOW_OK;
GST_DEBUG_OBJECT (decoder, "Flush done");
return TRUE;
}
gboolean
gst_d3d12_decoder_close (GstD3D12Decoder * decoder)
{
auto priv = decoder->priv;
GST_DEBUG_OBJECT (decoder, "Close");
if (priv->cmd) {
gst_d3d12_command_queue_fence_wait (priv->cmd->queue, priv->cmd->fence_val,
priv->cmd->event_handle);
}
priv->session = nullptr;
priv->cmd = nullptr;
gst_clear_object (&decoder->device);
return TRUE;
}
GstFlowReturn
gst_d3d12_decoder_configure (GstD3D12Decoder * decoder,
GstVideoDecoder * videodec, GstVideoCodecState * input_state,
const GstVideoInfo * info,
gint crop_x, gint crop_y, gint coded_width,
gint coded_height, guint dpb_size)
{
g_return_val_if_fail (GST_IS_D3D12_DECODER (decoder), GST_FLOW_ERROR);
g_return_val_if_fail (info, GST_FLOW_ERROR);
g_return_val_if_fail (input_state, GST_FLOW_ERROR);
g_return_val_if_fail (coded_width >= GST_VIDEO_INFO_WIDTH (info),
GST_FLOW_ERROR);
g_return_val_if_fail (coded_height >= GST_VIDEO_INFO_HEIGHT (info),
GST_FLOW_ERROR);
g_return_val_if_fail (dpb_size > 0, GST_FLOW_ERROR);
GstD3D12Format device_format;
auto priv = decoder->priv;
HRESULT hr;
D3D12_VIDEO_DECODER_DESC prev_desc = { };
ComPtr < ID3D12VideoDecoder > prev_decoder;
/* Store previous encoder object and reuse if possible */
if (priv->session) {
prev_desc = priv->session->decoder_desc;
prev_decoder = priv->session->decoder;
}
gst_d3d12_decoder_drain (decoder, videodec);
priv->session = nullptr;
if (!gst_d3d12_device_get_format (decoder->device,
GST_VIDEO_INFO_FORMAT (info), &device_format) ||
device_format.dxgi_format == DXGI_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (decoder, "Could not determine dxgi format from %s",
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
return GST_FLOW_ERROR;
}
if (decoder->codec == GST_DXVA_CODEC_H264)
dpb_size += 1;
/* +2 for threading */
dpb_size += 2;
dpb_size = MAX (dpb_size, ASYNC_DEPTH);
auto session = std::make_unique < DecoderSessionData > ();
session->input_state = gst_video_codec_state_ref (input_state);
session->info = *info;
session->output_info = *info;
session->crop_x = crop_x;
session->crop_y = crop_y;
session->coded_width = coded_width;
session->coded_height = coded_height;
session->dpb_size = dpb_size;
session->decoder_format = device_format.dxgi_format;
if (crop_x != 0 || crop_y != 0)
session->need_crop = true;
bool supported = false;
for (guint i = 0; i < G_N_ELEMENTS (format_list); i++) {
const DecoderFormat *decoder_format = nullptr;
if (format_list[i].codec != decoder->codec)
continue;
for (guint j = 0; j < G_N_ELEMENTS (format_list[i].format); j++) {
DXGI_FORMAT format = format_list[i].format[j];
if (format == DXGI_FORMAT_UNKNOWN)
break;
if (format == session->decoder_format) {
decoder_format = &format_list[i];
break;
}
}
if (!decoder_format)
continue;
D3D12_FEATURE_DATA_VIDEO_DECODE_SUPPORT support = { };
support.Configuration.DecodeProfile = decoder_format->decode_profile;
support.Configuration.BitstreamEncryption =
D3D12_BITSTREAM_ENCRYPTION_TYPE_NONE;
if (GST_VIDEO_INFO_IS_INTERLACED (info) &&
GST_VIDEO_INFO_INTERLACE_MODE (info) !=
GST_VIDEO_INTERLACE_MODE_ALTERNATE) {
support.Configuration.InterlaceType =
D3D12_VIDEO_FRAME_CODED_INTERLACE_TYPE_FIELD_BASED;
} else {
support.Configuration.InterlaceType =
D3D12_VIDEO_FRAME_CODED_INTERLACE_TYPE_NONE;
}
support.DecodeFormat = session->decoder_format;
support.FrameRate = { 0, 1 };
support.Width = coded_width;
support.Height = coded_height;
hr = priv->cmd->
video_device->CheckFeatureSupport (D3D12_FEATURE_VIDEO_DECODE_SUPPORT,
&support, sizeof (support));
if (FAILED (hr))
continue;
if ((support.SupportFlags & D3D12_VIDEO_DECODE_SUPPORT_FLAG_SUPPORTED) == 0)
continue;
session->support = support;
supported = true;
break;
}
if (!supported) {
GST_ERROR_OBJECT (decoder,
"Decoder does not support current configuration");
return GST_FLOW_ERROR;
}
const auto & support = session->support;
guint alignment = 16;
if ((support.ConfigurationFlags &
D3D12_VIDEO_DECODE_CONFIGURATION_FLAG_HEIGHT_ALIGNMENT_MULTIPLE_32_REQUIRED)
!= 0) {
alignment = 32;
}
session->aligned_width = GST_ROUND_UP_N (session->coded_width, alignment);
session->aligned_height = GST_ROUND_UP_N (session->coded_height, alignment);
if (prev_decoder && prev_desc.Configuration.DecodeProfile ==
support.Configuration.DecodeProfile &&
prev_desc.Configuration.InterlaceType ==
support.Configuration.InterlaceType) {
session->decoder = prev_decoder;
session->decoder_desc = prev_desc;
} else {
D3D12_VIDEO_DECODER_DESC desc;
desc.NodeMask = 0;
desc.Configuration = support.Configuration;
hr = priv->cmd->video_device->CreateVideoDecoder (&desc,
IID_PPV_ARGS (&session->decoder));
if (!gst_d3d12_result (hr, decoder->device)) {
GST_ERROR_OBJECT (decoder, "Couldn't create decoder object");
return GST_FLOW_ERROR;
}
session->decoder_desc = desc;
}
D3D12_VIDEO_DECODER_HEAP_DESC heap_desc;
heap_desc.NodeMask = 0;
heap_desc.Configuration = session->support.Configuration;
heap_desc.DecodeWidth = session->aligned_width;
heap_desc.DecodeHeight = session->aligned_height;
heap_desc.Format = session->decoder_format;
heap_desc.FrameRate = { 0, 1 };
heap_desc.BitRate = 0;
heap_desc.MaxDecodePictureBufferCount = session->dpb_size;
hr = priv->cmd->video_device->CreateVideoDecoderHeap (&heap_desc,
IID_PPV_ARGS (&session->heap));
if (!gst_d3d12_result (hr, decoder->device)) {
GST_ERROR_OBJECT (decoder, "Couldn't create decoder heap");
return GST_FLOW_ERROR;
}
guint max_buffers = session->dpb_size;
if (support.DecodeTier == D3D12_VIDEO_DECODE_TIER_1) {
session->array_of_textures = false;
} else {
session->array_of_textures = true;
max_buffers = 0;
}
D3D12_RESOURCE_FLAGS resource_flags;
if ((support.ConfigurationFlags &
D3D12_VIDEO_DECODE_CONFIGURATION_FLAG_REFERENCE_ONLY_ALLOCATIONS_REQUIRED)
!= 0 || !session->array_of_textures) {
resource_flags =
D3D12_RESOURCE_FLAG_VIDEO_DECODE_REFERENCE_ONLY |
D3D12_RESOURCE_FLAG_DENY_SHADER_RESOURCE;
session->reference_only = true;
} else {
resource_flags = D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS;
session->reference_only = false;
}
GST_DEBUG_OBJECT (decoder, "reference only: %d, array-of-textures: %d",
session->reference_only, session->array_of_textures);
GstVideoAlignment align;
gst_video_alignment_reset (&align);
align.padding_right = session->aligned_width - info->width;
align.padding_bottom = session->aligned_height - info->height;
auto params = gst_d3d12_allocation_params_new (decoder->device, info,
GST_D3D12_ALLOCATION_FLAG_DEFAULT, resource_flags);
gst_d3d12_allocation_params_alignment (params, &align);
gst_d3d12_allocation_params_set_heap_flags (params,
D3D12_HEAP_FLAG_CREATE_NOT_ZEROED);
if (!session->array_of_textures)
gst_d3d12_allocation_params_set_array_size (params, session->dpb_size);
session->dpb_pool = gst_d3d12_buffer_pool_new (decoder->device);
auto config = gst_buffer_pool_get_config (session->dpb_pool);
auto caps = gst_video_info_to_caps (info);
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
gst_d3d12_allocation_params_free (params);
gst_buffer_pool_config_set_params (config, caps, info->size, 0, max_buffers);
if (!gst_buffer_pool_set_config (session->dpb_pool, config)) {
GST_ERROR_OBJECT (decoder, "Couldn't set pool config");
gst_caps_unref (caps);
return GST_FLOW_ERROR;
}
if (!gst_buffer_pool_set_active (session->dpb_pool, TRUE)) {
GST_ERROR_OBJECT (decoder, "Set active failed");
gst_caps_unref (caps);
return GST_FLOW_ERROR;
}
if (session->reference_only) {
GST_DEBUG_OBJECT (decoder, "Creating output only pool");
session->output_pool = gst_d3d12_buffer_pool_new (decoder->device);
config = gst_buffer_pool_get_config (session->output_pool);
params = gst_d3d12_allocation_params_new (decoder->device, info,
GST_D3D12_ALLOCATION_FLAG_DEFAULT,
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS);
gst_d3d12_allocation_params_alignment (params, &align);
gst_d3d12_allocation_params_set_heap_flags (params,
D3D12_HEAP_FLAG_CREATE_NOT_ZEROED);
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
gst_d3d12_allocation_params_free (params);
gst_buffer_pool_config_set_params (config, caps, info->size, 0, 0);
if (!gst_buffer_pool_set_config (session->output_pool, config)) {
GST_ERROR_OBJECT (decoder, "Couldn't set pool config");
gst_caps_unref (caps);
return GST_FLOW_ERROR;
}
if (!gst_buffer_pool_set_active (session->output_pool, TRUE)) {
GST_ERROR_OBJECT (decoder, "Set active failed");
gst_caps_unref (caps);
return GST_FLOW_ERROR;
}
}
gst_caps_unref (caps);
session->dpb = std::make_shared < GstD3D12Dpb > ((guint8) session->dpb_size);
priv->session = std::move (session);
priv->last_flow = GST_FLOW_OK;
return GST_FLOW_OK;
}
gboolean
gst_d3d12_decoder_stop (GstD3D12Decoder * decoder)
{
auto priv = decoder->priv;
GST_DEBUG_OBJECT (decoder, "Stop");
priv->flushing = true;
if (priv->cmd) {
gst_d3d12_command_queue_fence_wait (priv->cmd->queue, priv->cmd->fence_val,
priv->cmd->event_handle);
}
if (priv->output_thread && priv->session) {
auto empty_data = DecoderOutputData ();
std::lock_guard < std::mutex > lk (priv->session->queue_lock);
gst_queue_array_push_tail_struct (priv->session->output_queue, &empty_data);
priv->session->queue_cond.notify_one ();
}
g_clear_pointer (&priv->output_thread, g_thread_join);
priv->flushing = false;
priv->session = nullptr;
return TRUE;
}
static void
gst_d3d12_decoder_picture_free (GstD3D12DecoderPicture * self)
{
delete self;
}
static GstD3D12DecoderPicture *
gst_d3d12_decoder_picture_new (GstD3D12Decoder * self, GstBuffer * buffer,
GstBuffer * output_buffer, ID3D12VideoDecoder * dec,
ID3D12VideoDecoderHeap * heap)
{
auto priv = self->priv;
auto mem = (GstD3D12Memory *) gst_buffer_peek_memory (buffer, 0);
auto view_id = priv->session->dpb->Acquire (mem, heap);
if (view_id == 0xff) {
GST_WARNING_OBJECT (self, "No empty picture");
gst_buffer_unref (buffer);
if (output_buffer)
gst_buffer_unref (output_buffer);
return nullptr;
}
auto picture = new GstD3D12DecoderPicture (buffer, output_buffer,
priv->session->dpb, dec, heap, view_id);
gst_mini_object_init (picture, 0, GST_TYPE_D3D12_DECODER_PICTURE,
nullptr, nullptr,
(GstMiniObjectFreeFunction) gst_d3d12_decoder_picture_free);
return picture;
}
GstFlowReturn
gst_d3d12_decoder_new_picture (GstD3D12Decoder * decoder,
GstVideoDecoder * videodec, GstCodecPicture * picture)
{
g_return_val_if_fail (GST_IS_D3D12_DECODER (decoder), GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_VIDEO_DECODER (videodec), GST_FLOW_ERROR);
g_return_val_if_fail (picture != nullptr, GST_FLOW_ERROR);
auto priv = decoder->priv;
if (!priv->session) {
GST_ERROR_OBJECT (decoder, "No session configured");
return GST_FLOW_ERROR;
}
GST_VIDEO_DECODER_STREAM_UNLOCK (videodec);
GstBuffer *buffer;
auto ret = gst_buffer_pool_acquire_buffer (priv->session->dpb_pool,
&buffer, nullptr);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (videodec, "Couldn't acquire memory");
GST_VIDEO_DECODER_STREAM_LOCK (videodec);
return ret;
}
GstBuffer *output_buffer = nullptr;
if (priv->session->reference_only) {
ret = gst_buffer_pool_acquire_buffer (priv->session->output_pool,
&output_buffer, nullptr);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (videodec, "Couldn't acquire output memory");
GST_VIDEO_DECODER_STREAM_LOCK (videodec);
gst_buffer_unref (buffer);
return ret;
}
}
/* unlock so that output thread can output picture and return
* back to dpb */
auto decoder_pic = gst_d3d12_decoder_picture_new (decoder, buffer,
output_buffer, priv->session->decoder.Get (), priv->session->heap.Get ());
GST_VIDEO_DECODER_STREAM_LOCK (videodec);
if (!decoder_pic) {
GST_ERROR_OBJECT (videodec, "Couldn't create new picture");
return GST_FLOW_ERROR;
}
gst_codec_picture_set_user_data (picture, decoder_pic,
(GDestroyNotify) gst_mini_object_unref);
return GST_FLOW_OK;
}
static inline GstD3D12DecoderPicture *
get_decoder_picture (GstCodecPicture * picture)
{
return (GstD3D12DecoderPicture *) gst_codec_picture_get_user_data (picture);
}
GstFlowReturn
gst_d3d12_decoder_duplicate_picture (GstD3D12Decoder * decoder,
GstCodecPicture * src, GstCodecPicture * dst)
{
auto decoder_pic = get_decoder_picture (src);
if (!decoder_pic)
return GST_FLOW_ERROR;
gst_codec_picture_set_user_data (dst, gst_mini_object_ref (decoder_pic),
(GDestroyNotify) gst_mini_object_unref);
return GST_FLOW_OK;
}
guint8
gst_d3d12_decoder_get_picture_id (GstD3D12Decoder * decoder,
GstCodecPicture * picture)
{
if (!picture)
return 0xff;
auto decoder_pic = get_decoder_picture (picture);
if (!decoder_pic)
return 0xff;
return decoder_pic->view_id;
}
GstFlowReturn
gst_d3d12_decoder_start_picture (GstD3D12Decoder * decoder,
GstCodecPicture * picture, guint8 * picture_id)
{
auto decoder_pic = get_decoder_picture (picture);
if (picture_id)
*picture_id = 0xff;
if (!decoder_pic)
return GST_FLOW_ERROR;
if (picture_id)
*picture_id = decoder_pic->view_id;
return GST_FLOW_OK;
}
struct DecoderBitstream
{
ComPtr < ID3D12Resource > bitstream;
gsize bitstream_size = 0;
};
static void
bitstream_free_func (DecoderBitstream * buffer)
{
if (buffer)
delete buffer;
}
static gboolean
gst_d3d12_decoder_upload_bitstream (GstD3D12Decoder * self, gpointer data,
gsize size, GstD3D12CommandAllocator * cmd)
{
auto priv = self->priv;
HRESULT hr;
auto buffer = (DecoderBitstream *)
gst_d3d12_command_allocator_get_user_data (cmd);
if (!buffer || buffer->bitstream_size < size) {
buffer = new DecoderBitstream ();
gst_d3d12_command_allocator_set_user_data (cmd, buffer,
(GDestroyNotify) bitstream_free_func);
}
if (!buffer->bitstream) {
ComPtr < ID3D12Resource > bitstream;
size_t alloc_size = GST_ROUND_UP_128 (size) + 1024;
D3D12_HEAP_PROPERTIES heap_prop =
CD3DX12_HEAP_PROPERTIES (D3D12_HEAP_TYPE_UPLOAD);
D3D12_RESOURCE_DESC desc = CD3DX12_RESOURCE_DESC::Buffer (alloc_size);
hr = priv->cmd->device->CreateCommittedResource (&heap_prop,
D3D12_HEAP_FLAG_CREATE_NOT_ZEROED, &desc,
D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS (&bitstream));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Failed to create bitstream buffer");
return FALSE;
}
GST_LOG_OBJECT (self, "Allocated new bitstream buffer with size %"
G_GSIZE_FORMAT, size);
buffer->bitstream = bitstream;
buffer->bitstream_size = alloc_size;
}
gpointer map_data;
D3D12_RANGE zero_range = { 0, 0 };
hr = buffer->bitstream->Map (0, &zero_range, &map_data);
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't map bitstream buffer");
return FALSE;
}
memcpy (map_data, data, size);
D3D12_RANGE range = { 0, size };
buffer->bitstream->Unmap (0, &range);
return TRUE;
}
GstFlowReturn
gst_d3d12_decoder_end_picture (GstD3D12Decoder * decoder,
GstCodecPicture * picture, GPtrArray * ref_pics,
const GstDxvaDecodingArgs * args)
{
auto priv = decoder->priv;
HRESULT hr;
D3D12_VIDEO_DECODE_OUTPUT_STREAM_ARGUMENTS out_args;
D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS in_args;
ID3D12Resource *resource;
ID3D12Resource *out_resource = nullptr;
GstD3D12Memory *dmem;
UINT subresource[2];
auto & pre_barriers = priv->pre_barriers;
auto & post_barriers = priv->post_barriers;
auto & configured_ref_pics = priv->configured_ref_pics;
pre_barriers.clear ();
post_barriers.clear ();
configured_ref_pics.clear ();
auto decoder_pic = get_decoder_picture (picture);
if (!decoder_pic) {
GST_ERROR_OBJECT (decoder, "No attached decoder picture");
return GST_FLOW_ERROR;
}
if (!args->bitstream || args->bitstream_size == 0) {
GST_ERROR_OBJECT (decoder, "No bitstream buffer passed");
return GST_FLOW_ERROR;
}
GST_LOG_OBJECT (decoder, "End picture with dxva-id %d, num-ref-pics %u",
decoder_pic->view_id, ref_pics->len);
if (!priv->output_thread) {
GST_DEBUG_OBJECT (decoder, "Spawning output thread");
priv->output_thread = g_thread_new ("GstD3D12DecoderLoop",
(GThreadFunc) gst_d3d12_decoder_output_loop, decoder);
}
GstD3D12CommandAllocator *gst_ca;
if (!gst_d3d12_command_allocator_pool_acquire (priv->cmd->ca_pool, &gst_ca)) {
GST_ERROR_OBJECT (decoder, "Couldn't acquire command allocator");
return GST_FLOW_ERROR;
}
if (!gst_d3d12_decoder_upload_bitstream (decoder, args->bitstream,
args->bitstream_size, gst_ca)) {
gst_d3d12_command_allocator_unref (gst_ca);
return GST_FLOW_ERROR;
}
auto bitstream = (DecoderBitstream *)
gst_d3d12_command_allocator_get_user_data (gst_ca);
g_assert (bitstream);
memset (&in_args, 0, sizeof (D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS));
memset (&out_args, 0, sizeof (D3D12_VIDEO_DECODE_OUTPUT_STREAM_ARGUMENTS));
ComPtr < ID3D12CommandAllocator > ca;
gst_d3d12_command_allocator_get_handle (gst_ca, &ca);
hr = ca->Reset ();
if (!gst_d3d12_result (hr, decoder->device)) {
GST_ERROR_OBJECT (decoder, "Couldn't reset command allocator");
gst_d3d12_command_allocator_unref (gst_ca);
return GST_FLOW_ERROR;
}
if (!priv->cmd->cl) {
hr = priv->cmd->device->CreateCommandList (0,
D3D12_COMMAND_LIST_TYPE_VIDEO_DECODE,
ca.Get (), nullptr, IID_PPV_ARGS (&priv->cmd->cl));
} else {
hr = priv->cmd->cl->Reset (ca.Get ());
}
if (!gst_d3d12_result (hr, decoder->device)) {
GST_ERROR_OBJECT (decoder, "Couldn't configure command list");
gst_d3d12_command_allocator_unref (gst_ca);
return GST_FLOW_ERROR;
}
for (guint i = 0; i < ref_pics->len; i++) {
auto ref_pic = (GstCodecPicture *) g_ptr_array_index (ref_pics, i);
auto ref_dec_pic = get_decoder_picture (ref_pic);
if (!ref_dec_pic || ref_dec_pic == decoder_pic)
continue;
if (std::find (configured_ref_pics.begin (), configured_ref_pics.end (),
ref_dec_pic) != configured_ref_pics.end ()) {
continue;
}
configured_ref_pics.push_back (ref_dec_pic);
dmem = (GstD3D12Memory *) gst_buffer_peek_memory (ref_dec_pic->buffer, 0);
resource = gst_d3d12_memory_get_resource_handle (dmem);
if (priv->session->array_of_textures) {
pre_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_DECODE_READ));
post_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_VIDEO_DECODE_READ,
D3D12_RESOURCE_STATE_COMMON));
} else {
gst_d3d12_memory_get_subresource_index (dmem, 0, &subresource[0]);
gst_d3d12_memory_get_subresource_index (dmem, 1, &subresource[1]);
pre_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_DECODE_READ, subresource[0]));
pre_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_DECODE_READ, subresource[1]));
post_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_VIDEO_DECODE_READ,
D3D12_RESOURCE_STATE_COMMON, subresource[0]));
post_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_VIDEO_DECODE_READ,
D3D12_RESOURCE_STATE_COMMON, subresource[1]));
}
}
if (decoder_pic->output_buffer) {
dmem = (GstD3D12Memory *)
gst_buffer_peek_memory (decoder_pic->output_buffer, 0);
out_resource = gst_d3d12_memory_get_resource_handle (dmem);
pre_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (out_resource,
D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE));
post_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (out_resource,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE,
D3D12_RESOURCE_STATE_COMMON));
}
dmem = (GstD3D12Memory *) gst_buffer_peek_memory (decoder_pic->buffer, 0);
resource = gst_d3d12_memory_get_resource_handle (dmem);
gst_d3d12_memory_get_subresource_index (GST_D3D12_MEMORY_CAST (dmem), 0,
&subresource[0]);
if (priv->session->array_of_textures) {
pre_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE));
post_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE,
D3D12_RESOURCE_STATE_COMMON));
} else {
gst_d3d12_memory_get_subresource_index (GST_D3D12_MEMORY_CAST (dmem), 1,
&subresource[1]);
pre_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE, subresource[0]));
pre_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE, subresource[1]));
post_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE,
D3D12_RESOURCE_STATE_COMMON, subresource[0]));
post_barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (resource,
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE,
D3D12_RESOURCE_STATE_COMMON, subresource[1]));
}
priv->cmd->cl->ResourceBarrier (pre_barriers.size (), &pre_barriers[0]);
if (out_resource) {
out_args.pOutputTexture2D = out_resource;
out_args.OutputSubresource = 0;
out_args.ConversionArguments.Enable = TRUE;
out_args.ConversionArguments.pReferenceTexture2D = resource;
out_args.ConversionArguments.ReferenceSubresource = subresource[0];
} else {
out_args.pOutputTexture2D = resource;
out_args.OutputSubresource = subresource[0];
out_args.ConversionArguments.Enable = FALSE;
}
if (args->picture_params) {
in_args.FrameArguments[in_args.NumFrameArguments].Type =
D3D12_VIDEO_DECODE_ARGUMENT_TYPE_PICTURE_PARAMETERS;
in_args.FrameArguments[in_args.NumFrameArguments].Size =
args->picture_params_size;
in_args.FrameArguments[in_args.NumFrameArguments].pData =
args->picture_params;
in_args.NumFrameArguments++;
}
if (args->slice_control) {
in_args.FrameArguments[in_args.NumFrameArguments].Type =
D3D12_VIDEO_DECODE_ARGUMENT_TYPE_SLICE_CONTROL;
in_args.FrameArguments[in_args.NumFrameArguments].Size =
args->slice_control_size;
in_args.FrameArguments[in_args.NumFrameArguments].pData =
args->slice_control;
in_args.NumFrameArguments++;
}
if (args->inverse_quantization_matrix) {
in_args.FrameArguments[in_args.NumFrameArguments].Type =
D3D12_VIDEO_DECODE_ARGUMENT_TYPE_INVERSE_QUANTIZATION_MATRIX;
in_args.FrameArguments[in_args.NumFrameArguments].Size =
args->inverse_quantization_matrix_size;
in_args.FrameArguments[in_args.NumFrameArguments].pData =
args->inverse_quantization_matrix;
in_args.NumFrameArguments++;
}
in_args.CompressedBitstream.pBuffer = bitstream->bitstream.Get ();
in_args.CompressedBitstream.Offset = 0;
in_args.CompressedBitstream.Size = args->bitstream_size;
in_args.pHeap = decoder_pic->heap.Get ();
priv->session->dpb->GetReferenceFrames (in_args.ReferenceFrames);
priv->cmd->cl->DecodeFrame (priv->session->decoder.Get (),
&out_args, &in_args);
if (!post_barriers.empty ())
priv->cmd->cl->ResourceBarrier (post_barriers.size (), &post_barriers[0]);
hr = priv->cmd->cl->Close ();
if (!gst_d3d12_result (hr, decoder->device)) {
GST_ERROR_OBJECT (decoder, "Couldn't record decoding command");
gst_d3d12_command_allocator_unref (gst_ca);
return GST_FLOW_ERROR;
}
ID3D12CommandList *cl[] = { priv->cmd->cl.Get () };
hr = gst_d3d12_command_queue_execute_command_lists (priv->cmd->queue,
1, cl, &priv->cmd->fence_val);
if (!gst_d3d12_result (hr, decoder->device)) {
GST_ERROR_OBJECT (decoder, "Couldn't execute command list");
gst_d3d12_command_allocator_unref (gst_ca);
return GST_FLOW_ERROR;
}
decoder_pic->fence_val = priv->cmd->fence_val;
GstD3D12FenceData *fence_data;
gst_d3d12_fence_data_pool_acquire (priv->fence_data_pool, &fence_data);
gst_d3d12_fence_data_add_notify_mini_object (fence_data,
gst_mini_object_ref (decoder_pic));
gst_d3d12_fence_data_add_notify_mini_object (fence_data, gst_ca);
gst_d3d12_command_queue_set_notify (priv->cmd->queue, priv->cmd->fence_val,
fence_data, (GDestroyNotify) gst_d3d12_fence_data_unref);
return GST_FLOW_OK;
}
static gboolean
gst_d3d12_decoder_ensure_staging_texture (GstD3D12Decoder * self)
{
GstD3D12DecoderPrivate *priv = self->priv;
if (priv->session->staging)
return TRUE;
ComPtr < ID3D12Resource > staging;
HRESULT hr;
UINT64 size;
auto device = gst_d3d12_device_get_device_handle (self->device);
D3D12_RESOURCE_DESC tex_desc =
CD3DX12_RESOURCE_DESC::Tex2D (priv->session->decoder_format,
priv->session->aligned_width, priv->session->aligned_height, 1, 1);
device->GetCopyableFootprints (&tex_desc, 0, 2, 0,
priv->session->layout, nullptr, nullptr, &size);
D3D12_HEAP_PROPERTIES heap_prop = CD3DX12_HEAP_PROPERTIES
(D3D12_HEAP_TYPE_READBACK);
D3D12_RESOURCE_DESC desc = CD3DX12_RESOURCE_DESC::Buffer (size);
hr = device->CreateCommittedResource (&heap_prop,
D3D12_HEAP_FLAG_CREATE_NOT_ZEROED,
&desc, D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS (&staging));
if (!gst_d3d12_result (hr, self->device))
return FALSE;
priv->session->staging = staging;
return TRUE;
}
static gboolean
gst_d3d12_decoder_can_direct_render (GstD3D12Decoder * self,
GstVideoDecoder * videodec, GstBuffer * buffer,
gint display_width, gint display_height)
{
auto priv = self->priv;
if (priv->session->output_type != GST_D3D12_DECODER_OUTPUT_D3D12)
return FALSE;
if (display_width != GST_VIDEO_INFO_WIDTH (&priv->session->info) ||
display_height != GST_VIDEO_INFO_HEIGHT (&priv->session->info)) {
return FALSE;
}
/* We need to crop but downstream does not support crop, need to copy */
if (priv->session->need_crop && !priv->session->use_crop_meta)
return FALSE;
return TRUE;
}
static GstFlowReturn
gst_d3d12_decoder_process_output (GstD3D12Decoder * self,
GstVideoDecoder * videodec, GstVideoCodecFrame * frame,
GstCodecPicture * picture, GstVideoBufferFlags buffer_flags,
gint display_width, gint display_height)
{
GstFlowReturn ret = GST_FLOW_ERROR;
GstBuffer *buffer;
GstD3D12Memory *dmem;
ID3D12Resource *resource;
UINT subresource[2];
HRESULT hr;
bool attach_crop_meta = false;
auto priv = self->priv;
auto decoder_pic = get_decoder_picture (picture);
g_assert (decoder_pic);
gboolean need_negotiate = FALSE;
if (display_width != GST_VIDEO_INFO_WIDTH (&priv->session->output_info) ||
display_height != GST_VIDEO_INFO_HEIGHT (&priv->session->output_info)) {
GST_INFO_OBJECT (videodec, "Frame size changed, do renegotiate");
gst_video_info_set_interlaced_format (&priv->session->output_info,
GST_VIDEO_INFO_FORMAT (&priv->session->info),
GST_VIDEO_INFO_INTERLACE_MODE (&priv->session->info),
display_width, display_height);
need_negotiate = TRUE;
} else if (picture->discont_state) {
g_clear_pointer (&priv->session->input_state, gst_video_codec_state_unref);
priv->session->input_state =
gst_video_codec_state_ref (picture->discont_state);
need_negotiate = TRUE;
} else if (gst_pad_check_reconfigure (GST_VIDEO_DECODER_SRC_PAD (videodec))) {
need_negotiate = TRUE;
}
if (need_negotiate && !gst_video_decoder_negotiate (videodec)) {
GST_ERROR_OBJECT (videodec, "Couldn't negotiate with downstream");
gst_codec_picture_unref (picture);
gst_video_decoder_release_frame (videodec, frame);
return GST_FLOW_NOT_NEGOTIATED;
}
buffer = decoder_pic->output_buffer ?
decoder_pic->output_buffer : decoder_pic->buffer;
dmem = (GstD3D12Memory *) gst_buffer_peek_memory (buffer, 0);
priv->session->lock.lock ();
if (gst_d3d12_decoder_can_direct_render (self, videodec,
decoder_pic->buffer, display_width, display_height)) {
GST_LOG_OBJECT (self, "Outputting without copy");
GST_MINI_OBJECT_FLAG_SET (dmem, GST_D3D12_MEMORY_TRANSFER_NEED_DOWNLOAD);
GST_MINI_OBJECT_FLAG_UNSET (dmem, GST_D3D12_MEMORY_TRANSFER_NEED_UPLOAD);
if (priv->session->need_crop)
attach_crop_meta = true;
frame->output_buffer = gst_buffer_ref (buffer);
} else {
GstMemory *mem;
ID3D12Resource *out_resource = nullptr;
UINT out_subresource[2];
ret = gst_video_decoder_allocate_output_frame (videodec, frame);
if (ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (videodec, "Couldn't allocate output buffer");
goto error;
}
mem = gst_buffer_peek_memory (frame->output_buffer, 0);
if (gst_is_d3d12_memory (mem)) {
dmem = GST_D3D12_MEMORY_CAST (mem);
if (dmem->device == self->device) {
out_resource = gst_d3d12_memory_get_resource_handle (dmem);
gst_d3d12_memory_get_subresource_index (dmem, 0, &out_subresource[0]);
gst_d3d12_memory_get_subresource_index (dmem, 1, &out_subresource[1]);
GST_MINI_OBJECT_FLAG_SET (dmem,
GST_D3D12_MEMORY_TRANSFER_NEED_DOWNLOAD);
GST_MINI_OBJECT_FLAG_UNSET (dmem,
GST_D3D12_MEMORY_TRANSFER_NEED_UPLOAD);
}
}
if (!out_resource && !gst_d3d12_decoder_ensure_staging_texture (self)) {
GST_ERROR_OBJECT (videodec, "Couldn't allocate staging texture");
ret = GST_FLOW_ERROR;
goto error;
}
resource = gst_d3d12_memory_get_resource_handle (dmem);
gst_d3d12_memory_get_subresource_index (dmem, 0, &subresource[0]);
gst_d3d12_memory_get_subresource_index (dmem, 1, &subresource[1]);
/* Copy texture to staging */
D3D12_BOX src_box[2];
std::vector < GstD3D12CopyTextureRegionArgs > copy_args;
for (guint i = 0; i < 2; i++) {
GstD3D12CopyTextureRegionArgs args;
memset (&args, 0, sizeof (args));
args.src = CD3DX12_TEXTURE_COPY_LOCATION (resource, subresource[i]);
if (out_resource) {
args.dst =
CD3DX12_TEXTURE_COPY_LOCATION (out_resource, out_subresource[i]);
} else {
args.dst =
CD3DX12_TEXTURE_COPY_LOCATION (priv->session->staging.Get (),
priv->session->layout[i]);
}
/* FIXME: only 4:2:0 */
if (i == 0) {
src_box[i].left = GST_ROUND_UP_2 (priv->session->crop_x);
src_box[i].top = GST_ROUND_UP_2 (priv->session->crop_y);
src_box[i].right = GST_ROUND_UP_2 (priv->session->crop_x +
priv->session->output_info.width);
src_box[i].bottom =
GST_ROUND_UP_2 (priv->session->crop_y +
priv->session->output_info.height);
} else {
src_box[i].left = GST_ROUND_UP_2 (priv->session->crop_x) / 2;
src_box[i].top = GST_ROUND_UP_2 (priv->session->crop_y) / 2;
src_box[i].right =
GST_ROUND_UP_2 (priv->session->crop_x +
priv->session->output_info.width) / 2;
src_box[i].bottom =
GST_ROUND_UP_2 (priv->session->crop_y +
priv->session->output_info.height) / 2;
}
src_box[i].front = 0;
src_box[i].back = 1;
args.src_box = &src_box[i];
copy_args.push_back (args);
}
guint64 copy_fence_val = 0;
D3D12_COMMAND_LIST_TYPE queue_type = D3D12_COMMAND_LIST_TYPE_COPY;
if (out_resource)
queue_type = D3D12_COMMAND_LIST_TYPE_DIRECT;
gst_d3d12_device_copy_texture_region (self->device, copy_args.size (),
copy_args.data (), queue_type, &copy_fence_val);
gst_d3d12_device_fence_wait (self->device, queue_type,
copy_fence_val, priv->copy_event_handle);
if (!out_resource) {
guint8 *map_data;
GstVideoFrame vframe;
hr = priv->session->staging->Map (0, nullptr, (void **) &map_data);
if (!gst_d3d12_result (hr, self->device)) {
ret = GST_FLOW_ERROR;
goto error;
}
gst_video_frame_map (&vframe,
&priv->session->output_info, frame->output_buffer, GST_MAP_WRITE);
for (guint i = 0; i < GST_VIDEO_FRAME_N_PLANES (&vframe); i++) {
guint8 *src = map_data + priv->session->layout[i].Offset;
guint8 *dst = (guint8 *) GST_VIDEO_FRAME_PLANE_DATA (&vframe, i);
gint width = GST_VIDEO_FRAME_COMP_WIDTH (&vframe, i) *
GST_VIDEO_FRAME_COMP_PSTRIDE (&vframe, i);
for (gint j = 0; j < GST_VIDEO_FRAME_COMP_HEIGHT (&vframe, i); j++) {
memcpy (dst, src, width);
dst += GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, i);
src += priv->session->layout[i].Footprint.RowPitch;
}
}
priv->session->staging->Unmap (0, nullptr);
gst_video_frame_unmap (&vframe);
}
}
priv->session->lock.unlock ();
GST_BUFFER_FLAG_SET (frame->output_buffer, buffer_flags);
gst_codec_picture_unref (picture);
if (attach_crop_meta) {
frame->output_buffer = gst_buffer_make_writable (frame->output_buffer);
auto crop_meta = gst_buffer_add_video_crop_meta (frame->output_buffer);
crop_meta->x = priv->session->crop_x;
crop_meta->y = priv->session->crop_y;
crop_meta->width = priv->session->info.width;
crop_meta->height = priv->session->info.height;
GST_TRACE_OBJECT (self, "Attatching crop meta");
}
return gst_video_decoder_finish_frame (videodec, frame);
error:
priv->session->lock.unlock ();
gst_codec_picture_unref (picture);
gst_video_decoder_release_frame (videodec, frame);
return ret;
}
static gpointer
gst_d3d12_decoder_output_loop (GstD3D12Decoder * self)
{
auto priv = self->priv;
GST_DEBUG_OBJECT (self, "Entering output thread");
HANDLE event_handle = CreateEventEx (nullptr, nullptr, 0, EVENT_ALL_ACCESS);
while (true) {
DecoderOutputData output_data;
{
GST_LOG_OBJECT (self, "Waiting for output data");
std::unique_lock < std::mutex > lk (priv->session->queue_lock);
while (gst_queue_array_is_empty (priv->session->output_queue))
priv->session->queue_cond.wait (lk);
output_data = *((DecoderOutputData *)
gst_queue_array_pop_head_struct (priv->session->output_queue));
}
if (!output_data.frame) {
GST_DEBUG_OBJECT (self, "Got terminate data");
break;
}
auto decoder_pic = get_decoder_picture (output_data.picture);
g_assert (decoder_pic);
gst_d3d12_command_queue_fence_wait (priv->cmd->queue,
decoder_pic->fence_val, event_handle);
if (priv->flushing) {
GST_DEBUG_OBJECT (self, "Drop framem, we are flushing");
gst_codec_picture_unref (output_data.picture);
gst_video_decoder_release_frame (output_data.decoder, output_data.frame);
} else if (priv->last_flow == GST_FLOW_OK) {
priv->last_flow = gst_d3d12_decoder_process_output (self,
output_data.decoder, output_data.frame, output_data.picture,
output_data.buffer_flags, output_data.width, output_data.height);
if (priv->last_flow != GST_FLOW_FLUSHING &&
priv->last_flow != GST_FLOW_OK) {
GST_WARNING_OBJECT (self, "Last flow was %s",
gst_flow_get_name (priv->last_flow));
}
} else {
GST_DEBUG_OBJECT (self, "Dropping framem last flow return was %s",
gst_flow_get_name (priv->last_flow));
gst_codec_picture_unref (output_data.picture);
gst_video_decoder_release_frame (output_data.decoder, output_data.frame);
}
}
GST_DEBUG_OBJECT (self, "Leaving output thread");
CloseHandle (event_handle);
return nullptr;
}
GstFlowReturn
gst_d3d12_decoder_output_picture (GstD3D12Decoder * decoder,
GstVideoDecoder * videodec, GstVideoCodecFrame * frame,
GstCodecPicture * picture, GstVideoBufferFlags buffer_flags,
gint display_width, gint display_height)
{
g_return_val_if_fail (GST_IS_D3D12_DECODER (decoder), GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_VIDEO_DECODER (videodec), GST_FLOW_ERROR);
g_return_val_if_fail (frame != nullptr, GST_FLOW_ERROR);
g_return_val_if_fail (picture != nullptr, GST_FLOW_ERROR);
auto priv = decoder->priv;
GST_LOG_OBJECT (decoder, "Output picture");
if (!priv->session) {
GST_ERROR_OBJECT (decoder, "No session configured");
gst_codec_picture_unref (picture);
gst_video_decoder_release_frame (videodec, frame);
return GST_FLOW_ERROR;
}
auto output_data = DecoderOutputData ();
output_data.decoder = videodec;
output_data.frame = frame;
output_data.picture = picture;
output_data.buffer_flags = buffer_flags;
output_data.width = display_width;
output_data.height = display_height;
std::lock_guard < std::mutex > lk (priv->session->queue_lock);
gst_queue_array_push_tail_struct (priv->session->output_queue, &output_data);
priv->session->queue_cond.notify_one ();
return priv->last_flow;
}
gboolean
gst_d3d12_decoder_negotiate (GstD3D12Decoder * decoder,
GstVideoDecoder * videodec)
{
g_return_val_if_fail (GST_IS_D3D12_DECODER (decoder), FALSE);
g_return_val_if_fail (GST_IS_VIDEO_DECODER (videodec), FALSE);
auto priv = decoder->priv;
GstStructure *s;
const gchar *str;
if (!priv->session) {
GST_WARNING_OBJECT (decoder, "No configured session");
return FALSE;
}
auto peer_caps =
gst_pad_get_allowed_caps (GST_VIDEO_DECODER_SRC_PAD (videodec));
GST_DEBUG_OBJECT (videodec, "Allowed caps %" GST_PTR_FORMAT, peer_caps);
GstD3D12DecoderOutputType allowed_types = GST_D3D12_DECODER_OUTPUT_UNKNOWN;
if (!peer_caps || gst_caps_is_any (peer_caps)) {
GST_DEBUG_OBJECT (videodec,
"cannot determine output format, use system memory");
} else {
GstCapsFeatures *features;
guint size = gst_caps_get_size (peer_caps);
guint i;
for (i = 0; i < size; i++) {
features = gst_caps_get_features (peer_caps, i);
if (!features)
continue;
if (gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
allowed_types |= GST_D3D12_DECODER_OUTPUT_D3D12;
}
}
}
gst_clear_caps (&peer_caps);
GST_DEBUG_OBJECT (videodec, "Downstream feature support 0x%x",
(guint) allowed_types);
std::lock_guard < std::recursive_mutex > lk (priv->session->lock);
auto input_state = priv->session->input_state;
auto info = &priv->session->output_info;
/* TODO: add support alternate interlace */
auto state = gst_video_decoder_set_interlaced_output_state (videodec,
GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_INTERLACE_MODE (info),
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info), input_state);
if (!state) {
GST_ERROR_OBJECT (decoder, "Couldn't set output state");
return FALSE;
}
state->caps = gst_video_info_to_caps (&state->info);
s = gst_caps_get_structure (input_state->caps, 0);
str = gst_structure_get_string (s, "mastering-display-info");
if (str) {
gst_caps_set_simple (state->caps,
"mastering-display-info", G_TYPE_STRING, str, nullptr);
}
str = gst_structure_get_string (s, "content-light-level");
if (str) {
gst_caps_set_simple (state->caps,
"content-light-level", G_TYPE_STRING, str, nullptr);
}
g_clear_pointer (&priv->session->output_state, gst_video_codec_state_unref);
priv->session->output_state = state;
auto prev_output_type = priv->session->output_type;
if (prev_output_type != GST_D3D12_DECODER_OUTPUT_UNKNOWN &&
(prev_output_type & allowed_types) == prev_output_type) {
priv->session->output_type = prev_output_type;
} else {
if ((allowed_types & GST_D3D12_DECODER_OUTPUT_D3D12) != 0)
priv->session->output_type = GST_D3D12_DECODER_OUTPUT_D3D12;
else
priv->session->output_type = GST_D3D12_DECODER_OUTPUT_SYSTEM;
}
if (priv->session->output_type == GST_D3D12_DECODER_OUTPUT_D3D12) {
gst_caps_set_features (state->caps, 0,
gst_caps_features_new_single (GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY));
priv->session->output_type = GST_D3D12_DECODER_OUTPUT_D3D12;
}
GST_DEBUG_OBJECT (decoder, "Selected output type %d",
priv->session->output_type);
return TRUE;
}
gboolean
gst_d3d12_decoder_decide_allocation (GstD3D12Decoder * decoder,
GstVideoDecoder * videodec, GstQuery * query)
{
GstD3D12DecoderPrivate *priv = decoder->priv;
GstCaps *outcaps;
GstBufferPool *pool = nullptr;
guint n, size, min = 0, max = 0;
GstVideoInfo vinfo;
GstStructure *config;
g_return_val_if_fail (GST_IS_D3D12_DECODER (decoder), FALSE);
g_return_val_if_fail (GST_IS_VIDEO_DECODER (videodec), FALSE);
g_return_val_if_fail (query != nullptr, FALSE);
if (!priv->session) {
GST_ERROR_OBJECT (videodec, "Should open decoder first");
return FALSE;
}
gst_query_parse_allocation (query, &outcaps, nullptr);
if (!outcaps) {
GST_DEBUG_OBJECT (decoder, "No output caps");
return FALSE;
}
std::lock_guard < std::recursive_mutex > lk (priv->session->lock);
if (priv->session->output_type == GST_D3D12_DECODER_OUTPUT_D3D12) {
priv->session->use_crop_meta =
gst_query_find_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE,
nullptr);
} else {
priv->session->use_crop_meta = false;
}
gst_video_info_from_caps (&vinfo, outcaps);
n = gst_query_get_n_allocation_pools (query);
if (n > 0)
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
if (pool) {
if (priv->session->output_type == GST_D3D12_DECODER_OUTPUT_D3D12) {
if (!GST_IS_D3D12_BUFFER_POOL (pool)) {
GST_DEBUG_OBJECT (videodec,
"Downstream pool is not d3d12, will create new one");
gst_clear_object (&pool);
} else {
GstD3D12BufferPool *dpool = GST_D3D12_BUFFER_POOL (pool);
if (dpool->device != decoder->device) {
GST_DEBUG_OBJECT (videodec, "Different device, will create new one");
gst_clear_object (&pool);
}
}
}
}
if (!pool) {
switch (priv->session->output_type) {
case GST_D3D12_DECODER_OUTPUT_D3D12:
pool = gst_d3d12_buffer_pool_new (decoder->device);
break;
default:
pool = gst_video_buffer_pool_new ();
break;
}
size = (guint) vinfo.size;
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, outcaps, size, min, max);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
if (priv->session->output_type == GST_D3D12_DECODER_OUTPUT_D3D12) {
GstD3D12AllocationParams *params;
GstVideoAlignment align;
gint width, height;
gst_video_alignment_reset (&align);
params = gst_buffer_pool_config_get_d3d12_allocation_params (config);
if (!params) {
params = gst_d3d12_allocation_params_new (decoder->device, &vinfo,
GST_D3D12_ALLOCATION_FLAG_DEFAULT,
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS);
} else {
gst_d3d12_allocation_params_set_resource_flags (params,
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS);
}
width = GST_VIDEO_INFO_WIDTH (&vinfo);
height = GST_VIDEO_INFO_HEIGHT (&vinfo);
/* need alignment to copy decoder output texture to downstream texture */
align.padding_right = GST_ROUND_UP_16 (width) - width;
align.padding_bottom = GST_ROUND_UP_16 (height) - height;
gst_d3d12_allocation_params_alignment (params, &align);
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
gst_d3d12_allocation_params_free (params);
GST_DEBUG_OBJECT (videodec, "Downstream min buffres: %d", min);
/* We will not use downstream pool for decoding, and therefore preallocation
* is unnecessary. So, Non-zero min buffer will be a waste of GPU memory */
min = 0;
}
gst_buffer_pool_set_config (pool, config);
/* d3d12 buffer pool will update buffer size based on allocated texture,
* get size from config again */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, nullptr, &size, nullptr, nullptr);
gst_structure_free (config);
if (n > 0)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
gst_object_unref (pool);
return TRUE;
}
void
gst_d3d12_decoder_sink_event (GstD3D12Decoder * decoder, GstEvent * event)
{
}
void
gst_d3d12_decoder_set_context (GstD3D12Decoder * decoder, GstElement * element,
GstContext * context)
{
auto priv = decoder->priv;
std::lock_guard < std::recursive_mutex > lk (priv->context_lock);
gst_d3d12_handle_set_context_for_adapter_luid (element,
context, decoder->adapter_luid, &decoder->device);
}
gboolean
gst_d3d12_decoder_handle_query (GstD3D12Decoder * decoder, GstElement * element,
GstQuery * query)
{
if (GST_QUERY_TYPE (query) != GST_QUERY_CONTEXT)
return FALSE;
auto priv = decoder->priv;
std::lock_guard < std::recursive_mutex > lk (priv->context_lock);
return gst_d3d12_handle_context_query (element, query, decoder->device);
}
enum
{
PROP_DECODER_ADAPTER_LUID = 1,
PROP_DECODER_DEVICE_ID,
PROP_DECODER_VENDOR_ID,
};
struct _GstD3D12DecoderClassData
{
GstD3D12DecoderSubClassData subclass_data;
GstCaps *sink_caps;
GstCaps *src_caps;
gchar *description;
};
static void
gst_d3d12_decoder_get_profiles (const GUID & profile,
std::vector < std::string > &list)
{
if (profile == D3D12_VIDEO_DECODE_PROFILE_MPEG2 ||
profile == D3D12_VIDEO_DECODE_PROFILE_MPEG1_AND_MPEG2) {
list.push_back ("main");
list.push_back ("simple");
} else if (profile == D3D12_VIDEO_DECODE_PROFILE_H264) {
list.push_back ("high");
list.push_back ("progressive-high");
list.push_back ("constrained-high");
list.push_back ("main");
list.push_back ("constrained-baseline");
list.push_back ("baseline");
} else if (profile == D3D12_VIDEO_DECODE_PROFILE_HEVC_MAIN) {
list.push_back ("main");
} else if (profile == D3D12_VIDEO_DECODE_PROFILE_HEVC_MAIN10) {
list.push_back ("main-10");
} else if (profile == D3D12_VIDEO_DECODE_PROFILE_VP8) {
/* skip profile field */
} else if (profile == D3D12_VIDEO_DECODE_PROFILE_VP9) {
list.push_back ("0");
} else if (profile == D3D12_VIDEO_DECODE_PROFILE_VP9_10BIT_PROFILE2) {
list.push_back ("2");
} else if (profile == D3D12_VIDEO_DECODE_PROFILE_AV1_PROFILE0) {
list.push_back ("main");
} else {
g_assert_not_reached ();
}
}
GstD3D12DecoderClassData *
gst_d3d12_decoder_check_feature_support (GstD3D12Device * device,
ID3D12VideoDevice * video_device, GstDxvaCodec codec)
{
HRESULT hr;
GstDxvaResolution max_resolution = { 0, 0 };
D3D12_VIDEO_DECODE_CONFIGURATION_FLAGS config_flags =
D3D12_VIDEO_DECODE_CONFIGURATION_FLAG_NONE;
D3D12_VIDEO_DECODE_TIER tier = D3D12_VIDEO_DECODE_TIER_NOT_SUPPORTED;
std::set < DXGI_FORMAT > supported_formats;
std::vector < std::string > profiles;
g_return_val_if_fail (GST_IS_D3D12_DEVICE (device), nullptr);
g_return_val_if_fail (video_device != nullptr, nullptr);
for (guint i = 0; i < G_N_ELEMENTS (format_list); i++) {
if (format_list[i].codec != codec)
continue;
D3D12_FEATURE_DATA_VIDEO_DECODE_SUPPORT s;
s.NodeIndex = 0;
s.Configuration.DecodeProfile = format_list[i].decode_profile;
s.Configuration.BitstreamEncryption = D3D12_BITSTREAM_ENCRYPTION_TYPE_NONE;
s.Configuration.InterlaceType = D3D12_VIDEO_FRAME_CODED_INTERLACE_TYPE_NONE;
s.FrameRate = { 0, 1 };
s.BitRate = 0;
bool supported = false;
for (guint j = 0; j < G_N_ELEMENTS (format_list[i].format); j++) {
s.DecodeFormat = format_list[i].format[j];
if (s.DecodeFormat == DXGI_FORMAT_UNKNOWN)
break;
for (guint k = 0; k < G_N_ELEMENTS (gst_dxva_resolutions); k++) {
s.Width = gst_dxva_resolutions[k].width;
s.Height = gst_dxva_resolutions[k].height;
hr = video_device->CheckFeatureSupport
(D3D12_FEATURE_VIDEO_DECODE_SUPPORT, &s,
sizeof (D3D12_FEATURE_DATA_VIDEO_DECODE_SUPPORT));
if (FAILED (hr))
break;
if ((s.SupportFlags & D3D12_VIDEO_DECODE_SUPPORT_FLAG_SUPPORTED) == 0)
break;
if (max_resolution.width < gst_dxva_resolutions[k].width)
max_resolution.width = gst_dxva_resolutions[k].width;
if (max_resolution.height < gst_dxva_resolutions[k].height)
max_resolution.height = gst_dxva_resolutions[k].height;
supported_formats.insert (format_list[i].format[j]);
config_flags = s.ConfigurationFlags;
tier = s.DecodeTier;
supported = true;
}
}
if (supported)
gst_d3d12_decoder_get_profiles (format_list[i].decode_profile, profiles);
}
if (supported_formats.empty ()) {
GST_DEBUG_OBJECT (device, "Device doesn't support %s",
gst_dxva_codec_to_string (codec));
return nullptr;
}
GST_DEBUG_OBJECT (device,
"Device supports codec %s (%dx%d), configuration flags 0x%x, tier: %d",
gst_dxva_codec_to_string (codec),
max_resolution.width, max_resolution.height, config_flags, tier);
std::string format_string;
/* *INDENT-OFF* */
for (const auto &iter : supported_formats) {
GstVideoFormat format = gst_d3d12_dxgi_format_to_gst (iter);
if (format == GST_VIDEO_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (device,
"Failed to get video format from dxgi format %d", iter);
}
if (!format_string.empty ())
format_string += ", ";
format_string += gst_video_format_to_string (format);
}
/* *INDENT-ON* */
std::string src_caps_string;
/* TODO: support d3d12 memory */
src_caps_string = "video/x-raw, format = (string) ";
if (supported_formats.size () > 1) {
src_caps_string += "{ " + format_string + " }";
} else {
src_caps_string += format_string;
}
std::string sink_caps_string;
std::string profile_string;
switch (codec) {
case GST_DXVA_CODEC_MPEG2:
sink_caps_string = "video/mpeg, "
"mpegversion = (int) 2, systemstream = (boolean) false";
break;
case GST_DXVA_CODEC_H264:
sink_caps_string = "video/x-h264, "
"stream-format=(string) { avc, avc3, byte-stream }, "
"alignment=(string) au";
break;
case GST_DXVA_CODEC_H265:
sink_caps_string = "video/x-h265, "
"stream-format=(string) { hev1, hvc1, byte-stream }, "
"alignment=(string) au";
break;
case GST_DXVA_CODEC_VP8:
sink_caps_string = "video/x-vp8";
break;
case GST_DXVA_CODEC_VP9:
if (profiles.size () > 1) {
sink_caps_string =
"video/x-vp9, alignment = (string) frame, profile = (string) 0; "
"video/x-vp9, alignment = (string) frame, profile = (string) 2, "
"bit-depth-luma = (uint) 10, bit-depth-chroma = (uint) 10";
} else if (profiles[0] == "0") {
sink_caps_string =
"video/x-vp9, alignment = (string) frame, profile = (string) 0";
} else {
sink_caps_string =
"video/x-vp9, alignment = (string) frame, profile = (string) 2, "
"bit-depth-luma = (uint) 10, bit-depth-chroma = (uint) 10";
}
break;
case GST_DXVA_CODEC_AV1:
sink_caps_string = "video/x-av1, alignment = (string) frame";
break;
default:
g_assert_not_reached ();
return nullptr;
}
/* *INDENT-OFF* */
if (codec != GST_DXVA_CODEC_VP9 && codec != GST_DXVA_CODEC_VP8) {
if (profiles.size () > 1) {
profile_string = "{ ";
bool first = true;
for (auto it : profiles) {
if (!first)
profile_string += ", ";
profile_string += it;
first = false;
}
profile_string += " }";
} else {
profile_string = profiles[0];
}
sink_caps_string += ", profile=(string) ";
sink_caps_string += profile_string;
}
/* *INDENT-ON* */
GstCaps *sink_caps = gst_caps_from_string (sink_caps_string.c_str ());
GstCaps *raw_caps = gst_caps_from_string (src_caps_string.c_str ());
GstCaps *src_caps = gst_caps_copy (raw_caps);
gst_caps_set_features_simple (src_caps,
gst_caps_features_new_single (GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY));
gst_caps_append (src_caps, raw_caps);
gint max_res = MAX (max_resolution.width, max_resolution.height);
gst_caps_set_simple (sink_caps,
"width", GST_TYPE_INT_RANGE, 1, max_res,
"height", GST_TYPE_INT_RANGE, 1, max_res, nullptr);
gst_caps_set_simple (src_caps,
"width", GST_TYPE_INT_RANGE, 1, max_res,
"height", GST_TYPE_INT_RANGE, 1, max_res, nullptr);
GstD3D12DecoderClassData *ret = g_new0 (GstD3D12DecoderClassData, 1);
GstD3D12DecoderSubClassData *subclass_data = &ret->subclass_data;
ret->sink_caps = sink_caps;
ret->src_caps = src_caps;
subclass_data->codec = codec;
/* class data will be leaked if the element never gets instantiated */
GST_MINI_OBJECT_FLAG_SET (sink_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GST_MINI_OBJECT_FLAG_SET (src_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
g_object_get (device, "adapter-luid", &subclass_data->adapter_luid,
"device-id", &subclass_data->device_id, "vendor-id",
&subclass_data->vendor_id, "description", &ret->description, nullptr);
GST_DEBUG_OBJECT (device,
"Configured sink caps: %" GST_PTR_FORMAT ", src caps: %" GST_PTR_FORMAT,
sink_caps, src_caps);
return ret;
}
static void
gst_d3d12_decoder_class_data_free (GstD3D12DecoderClassData * data)
{
if (!data)
return;
gst_clear_caps (&data->sink_caps);
gst_clear_caps (&data->src_caps);
g_free (data->description);
g_free (data);
}
void
gst_d3d12_decoder_class_data_fill_subclass_data (GstD3D12DecoderClassData *
data, GstD3D12DecoderSubClassData * subclass_data)
{
g_return_if_fail (data != nullptr);
g_return_if_fail (subclass_data != nullptr);
*subclass_data = data->subclass_data;
}
void
gst_d3d12_decoder_proxy_class_init (GstElementClass * klass,
GstD3D12DecoderClassData * data, const gchar * author)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstD3D12DecoderSubClassData *cdata = &data->subclass_data;
std::string long_name;
std::string description;
const gchar *codec_name;
GParamFlags param_flags = (GParamFlags) (GST_PARAM_DOC_SHOW_DEFAULT |
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
GstPadTemplate *pad_templ;
g_object_class_install_property (gobject_class, PROP_DECODER_ADAPTER_LUID,
g_param_spec_int64 ("adapter-luid", "Adapter LUID",
"DXGI Adapter LUID (Locally Unique Identifier) of created device",
G_MININT64, G_MAXINT64, 0, param_flags));
g_object_class_install_property (gobject_class, PROP_DECODER_DEVICE_ID,
g_param_spec_uint ("device-id", "Device Id",
"DXGI Device ID", 0, G_MAXUINT32, 0, param_flags));
g_object_class_install_property (gobject_class, PROP_DECODER_VENDOR_ID,
g_param_spec_uint ("vendor-id", "Vendor Id",
"DXGI Vendor ID", 0, G_MAXUINT32, 0, param_flags));
codec_name = gst_dxva_codec_to_string (cdata->codec);
long_name = "Direct3D12/DXVA " + std::string (codec_name) + " " +
std::string (data->description) + " Decoder";
description = "Direct3D12/DXVA based " + std::string (codec_name) +
" video decoder";
gst_element_class_set_metadata (klass, long_name.c_str (),
"Codec/Decoder/Video/Hardware", description.c_str (), author);
pad_templ = gst_pad_template_new ("sink",
GST_PAD_SINK, GST_PAD_ALWAYS, data->sink_caps);
gst_element_class_add_pad_template (klass, pad_templ);
pad_templ = gst_pad_template_new ("src",
GST_PAD_SRC, GST_PAD_ALWAYS, data->src_caps);
gst_element_class_add_pad_template (klass, pad_templ);
gst_d3d12_decoder_class_data_free (data);
}
void
gst_d3d12_decoder_proxy_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec,
GstD3D12DecoderSubClassData * subclass_data)
{
switch (prop_id) {
case PROP_DECODER_ADAPTER_LUID:
g_value_set_int64 (value, subclass_data->adapter_luid);
break;
case PROP_DECODER_DEVICE_ID:
g_value_set_uint (value, subclass_data->device_id);
break;
case PROP_DECODER_VENDOR_ID:
g_value_set_uint (value, subclass_data->vendor_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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