[FFmpeg-devel] [PATCH 5/5] avcodec/amfenc: redesign to use hwcontext_amf.

Dmitrii Ovchinnikov ovchinnikov.dmitrii at gmail.com
Tue Oct 22 02:16:36 EEST 2024


Co-authored-by: Evgeny Pavlov <lucenticus at gmail.com>
v3: cleanup code
---
 libavcodec/amfenc.c      | 520 +++++++++------------------------------
 libavcodec/amfenc.h      |  29 +--
 libavcodec/amfenc_av1.c  |   8 +-
 libavcodec/amfenc_h264.c |   6 +-
 libavcodec/amfenc_hevc.c |   6 +-
 5 files changed, 132 insertions(+), 437 deletions(-)

diff --git a/libavcodec/amfenc.c b/libavcodec/amfenc.c
index 225fb9df27..8632cb53c1 100644
--- a/libavcodec/amfenc.c
+++ b/libavcodec/amfenc.c
@@ -22,6 +22,8 @@
 #include "libavutil/avassert.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/hwcontext.h"
+#include "libavutil/hwcontext_amf.h"
+#include "libavutil/hwcontext_amf_internal.h"
 #if CONFIG_D3D11VA
 #include "libavutil/hwcontext_d3d11va.h"
 #endif
@@ -112,288 +114,18 @@ const enum AVPixelFormat ff_amf_pix_fmts[] = {
     AV_PIX_FMT_DXVA2_VLD,
 #endif
     AV_PIX_FMT_P010,
+    AV_PIX_FMT_AMF_SURFACE,
     AV_PIX_FMT_NONE
 };
 
-typedef struct FormatMap {
-    enum AVPixelFormat       av_format;
-    enum AMF_SURFACE_FORMAT  amf_format;
-} FormatMap;
-
-static const FormatMap format_map[] =
-{
-    { AV_PIX_FMT_NONE,       AMF_SURFACE_UNKNOWN },
-    { AV_PIX_FMT_NV12,       AMF_SURFACE_NV12 },
-    { AV_PIX_FMT_P010,       AMF_SURFACE_P010 },
-    { AV_PIX_FMT_BGR0,       AMF_SURFACE_BGRA },
-    { AV_PIX_FMT_RGB0,       AMF_SURFACE_RGBA },
-    { AV_PIX_FMT_GRAY8,      AMF_SURFACE_GRAY8 },
-    { AV_PIX_FMT_YUV420P,    AMF_SURFACE_YUV420P },
-    { AV_PIX_FMT_YUYV422,    AMF_SURFACE_YUY2 },
-};
-
-static enum AMF_SURFACE_FORMAT amf_av_to_amf_format(enum AVPixelFormat fmt)
-{
-    int i;
-    for (i = 0; i < amf_countof(format_map); i++) {
-        if (format_map[i].av_format == fmt) {
-            return format_map[i].amf_format;
-        }
-    }
-    return AMF_SURFACE_UNKNOWN;
-}
-
-static void AMF_CDECL_CALL AMFTraceWriter_Write(AMFTraceWriter *pThis,
-    const wchar_t *scope, const wchar_t *message)
-{
-    AmfTraceWriter *tracer = (AmfTraceWriter*)pThis;
-    av_log(tracer->avctx, AV_LOG_DEBUG, "%ls: %ls", scope, message); // \n is provided from AMF
-}
-
-static void AMF_CDECL_CALL AMFTraceWriter_Flush(AMFTraceWriter *pThis)
-{
-}
-
-static AMFTraceWriterVtbl tracer_vtbl =
-{
-    .Write = AMFTraceWriter_Write,
-    .Flush = AMFTraceWriter_Flush,
-};
-
-static int amf_load_library(AVCodecContext *avctx)
-{
-    AmfContext        *ctx = avctx->priv_data;
-    AMFInit_Fn         init_fun;
-    AMFQueryVersion_Fn version_fun;
-    AMF_RESULT         res;
-
-    ctx->delayed_frame = av_frame_alloc();
-    if (!ctx->delayed_frame) {
-        return AVERROR(ENOMEM);
-    }
-    // hardcoded to current HW queue size - will auto-realloc if too small
-    ctx->timestamp_list = av_fifo_alloc2(avctx->max_b_frames + 16, sizeof(int64_t),
-                                         AV_FIFO_FLAG_AUTO_GROW);
-    if (!ctx->timestamp_list) {
-        return AVERROR(ENOMEM);
-    }
-    ctx->dts_delay = 0;
-
-
-    ctx->library = dlopen(AMF_DLL_NAMEA, RTLD_NOW | RTLD_LOCAL);
-    AMF_RETURN_IF_FALSE(ctx, ctx->library != NULL,
-        AVERROR_UNKNOWN, "DLL %s failed to open\n", AMF_DLL_NAMEA);
-
-    init_fun = (AMFInit_Fn)dlsym(ctx->library, AMF_INIT_FUNCTION_NAME);
-    AMF_RETURN_IF_FALSE(ctx, init_fun != NULL, AVERROR_UNKNOWN, "DLL %s failed to find function %s\n", AMF_DLL_NAMEA, AMF_INIT_FUNCTION_NAME);
-
-    version_fun = (AMFQueryVersion_Fn)dlsym(ctx->library, AMF_QUERY_VERSION_FUNCTION_NAME);
-    AMF_RETURN_IF_FALSE(ctx, version_fun != NULL, AVERROR_UNKNOWN, "DLL %s failed to find function %s\n", AMF_DLL_NAMEA, AMF_QUERY_VERSION_FUNCTION_NAME);
-
-    res = version_fun(&ctx->version);
-    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "%s failed with error %d\n", AMF_QUERY_VERSION_FUNCTION_NAME, res);
-    res = init_fun(AMF_FULL_VERSION, &ctx->factory);
-    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "%s failed with error %d\n", AMF_INIT_FUNCTION_NAME, res);
-    res = ctx->factory->pVtbl->GetTrace(ctx->factory, &ctx->trace);
-    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetTrace() failed with error %d\n", res);
-    res = ctx->factory->pVtbl->GetDebug(ctx->factory, &ctx->debug);
-    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetDebug() failed with error %d\n", res);
-    return 0;
-}
-
-#if CONFIG_D3D11VA
-static int amf_init_from_d3d11_device(AVCodecContext *avctx, AVD3D11VADeviceContext *hwctx)
-{
-    AmfContext *ctx = avctx->priv_data;
-    AMF_RESULT res;
-
-    res = ctx->context->pVtbl->InitDX11(ctx->context, hwctx->device, AMF_DX11_1);
-    if (res != AMF_OK) {
-        if (res == AMF_NOT_SUPPORTED)
-            av_log(avctx, AV_LOG_ERROR, "AMF via D3D11 is not supported on the given device.\n");
-        else
-            av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on the given D3D11 device: %d.\n", res);
-        return AVERROR(ENODEV);
-    }
-
-    return 0;
-}
-#endif
-
-#if CONFIG_DXVA2
-static int amf_init_from_dxva2_device(AVCodecContext *avctx, AVDXVA2DeviceContext *hwctx)
-{
-    AmfContext *ctx = avctx->priv_data;
-    HANDLE device_handle;
-    IDirect3DDevice9 *device;
-    HRESULT hr;
-    AMF_RESULT res;
-    int ret;
-
-    hr = IDirect3DDeviceManager9_OpenDeviceHandle(hwctx->devmgr, &device_handle);
-    if (FAILED(hr)) {
-        av_log(avctx, AV_LOG_ERROR, "Failed to open device handle for Direct3D9 device: %lx.\n", (unsigned long)hr);
-        return AVERROR_EXTERNAL;
-    }
-
-    hr = IDirect3DDeviceManager9_LockDevice(hwctx->devmgr, device_handle, &device, FALSE);
-    if (SUCCEEDED(hr)) {
-        IDirect3DDeviceManager9_UnlockDevice(hwctx->devmgr, device_handle, FALSE);
-        ret = 0;
-    } else {
-        av_log(avctx, AV_LOG_ERROR, "Failed to lock device handle for Direct3D9 device: %lx.\n", (unsigned long)hr);
-        ret = AVERROR_EXTERNAL;
-    }
-
-    IDirect3DDeviceManager9_CloseDeviceHandle(hwctx->devmgr, device_handle);
-
-    if (ret < 0)
-        return ret;
-
-    res = ctx->context->pVtbl->InitDX9(ctx->context, device);
-
-    IDirect3DDevice9_Release(device);
-
-    if (res != AMF_OK) {
-        if (res == AMF_NOT_SUPPORTED)
-            av_log(avctx, AV_LOG_ERROR, "AMF via D3D9 is not supported on the given device.\n");
-        else
-            av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on given D3D9 device: %d.\n", res);
-        return AVERROR(ENODEV);
-    }
-
-    return 0;
-}
-#endif
-
-static int amf_init_context(AVCodecContext *avctx)
-{
-    AmfContext *ctx = avctx->priv_data;
-    AMFContext1 *context1 = NULL;
-    AMF_RESULT  res;
-    av_unused int ret;
-
-    ctx->hwsurfaces_in_queue = 0;
-    ctx->hwsurfaces_in_queue_max = 16;
-
-    // configure AMF logger
-    // the return of these functions indicates old state and do not affect behaviour
-    ctx->trace->pVtbl->EnableWriter(ctx->trace, AMF_TRACE_WRITER_DEBUG_OUTPUT, ctx->log_to_dbg != 0 );
-    if (ctx->log_to_dbg)
-        ctx->trace->pVtbl->SetWriterLevel(ctx->trace, AMF_TRACE_WRITER_DEBUG_OUTPUT, AMF_TRACE_TRACE);
-    ctx->trace->pVtbl->EnableWriter(ctx->trace, AMF_TRACE_WRITER_CONSOLE, 0);
-    ctx->trace->pVtbl->SetGlobalLevel(ctx->trace, AMF_TRACE_TRACE);
-
-    // connect AMF logger to av_log
-    ctx->tracer.vtbl = &tracer_vtbl;
-    ctx->tracer.avctx = avctx;
-    ctx->trace->pVtbl->RegisterWriter(ctx->trace, FFMPEG_AMF_WRITER_ID,(AMFTraceWriter*)&ctx->tracer, 1);
-    ctx->trace->pVtbl->SetWriterLevel(ctx->trace, FFMPEG_AMF_WRITER_ID, AMF_TRACE_TRACE);
-
-    res = ctx->factory->pVtbl->CreateContext(ctx->factory, &ctx->context);
-    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "CreateContext() failed with error %d\n", res);
-
-    // If a device was passed to the encoder, try to initialise from that.
-    if (avctx->hw_frames_ctx) {
-        AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
-
-        if (amf_av_to_amf_format(frames_ctx->sw_format) == AMF_SURFACE_UNKNOWN) {
-            av_log(avctx, AV_LOG_ERROR, "Format of input frames context (%s) is not supported by AMF.\n",
-                   av_get_pix_fmt_name(frames_ctx->sw_format));
-            return AVERROR(EINVAL);
-        }
-
-        switch (frames_ctx->device_ctx->type) {
-#if CONFIG_D3D11VA
-        case AV_HWDEVICE_TYPE_D3D11VA:
-            ret = amf_init_from_d3d11_device(avctx, frames_ctx->device_ctx->hwctx);
-            if (ret < 0)
-                return ret;
-            break;
-#endif
-#if CONFIG_DXVA2
-        case AV_HWDEVICE_TYPE_DXVA2:
-            ret = amf_init_from_dxva2_device(avctx, frames_ctx->device_ctx->hwctx);
-            if (ret < 0)
-                return ret;
-            break;
-#endif
-        default:
-            av_log(avctx, AV_LOG_ERROR, "AMF initialisation from a %s frames context is not supported.\n",
-                   av_hwdevice_get_type_name(frames_ctx->device_ctx->type));
-            return AVERROR(ENOSYS);
-        }
-
-        ctx->hw_frames_ctx = av_buffer_ref(avctx->hw_frames_ctx);
-        if (!ctx->hw_frames_ctx)
-            return AVERROR(ENOMEM);
-
-        if (frames_ctx->initial_pool_size > 0)
-            ctx->hwsurfaces_in_queue_max = frames_ctx->initial_pool_size - 1;
-
-    } else if (avctx->hw_device_ctx) {
-        AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)avctx->hw_device_ctx->data;
-
-        switch (device_ctx->type) {
-#if CONFIG_D3D11VA
-        case AV_HWDEVICE_TYPE_D3D11VA:
-            ret = amf_init_from_d3d11_device(avctx, device_ctx->hwctx);
-            if (ret < 0)
-                return ret;
-            break;
-#endif
-#if CONFIG_DXVA2
-        case AV_HWDEVICE_TYPE_DXVA2:
-            ret = amf_init_from_dxva2_device(avctx, device_ctx->hwctx);
-            if (ret < 0)
-                return ret;
-            break;
-#endif
-        default:
-            av_log(avctx, AV_LOG_ERROR, "AMF initialisation from a %s device is not supported.\n",
-                   av_hwdevice_get_type_name(device_ctx->type));
-            return AVERROR(ENOSYS);
-        }
-
-        ctx->hw_device_ctx = av_buffer_ref(avctx->hw_device_ctx);
-        if (!ctx->hw_device_ctx)
-            return AVERROR(ENOMEM);
-
-    } else {
-        res = ctx->context->pVtbl->InitDX11(ctx->context, NULL, AMF_DX11_1);
-        if (res == AMF_OK) {
-            av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via D3D11.\n");
-        } else {
-            res = ctx->context->pVtbl->InitDX9(ctx->context, NULL);
-            if (res == AMF_OK) {
-                av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via D3D9.\n");
-            } else {
-                AMFGuid guid = IID_AMFContext1();
-                res = ctx->context->pVtbl->QueryInterface(ctx->context, &guid, (void**)&context1);
-                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "CreateContext1() failed with error %d\n", res);
-
-                res = context1->pVtbl->InitVulkan(context1, NULL);
-                context1->pVtbl->Release(context1);
-                if (res != AMF_OK) {
-                    if (res == AMF_NOT_SUPPORTED)
-                        av_log(avctx, AV_LOG_ERROR, "AMF via Vulkan is not supported on the given device.\n");
-                    else
-                        av_log(avctx, AV_LOG_ERROR, "AMF failed to initialise on the given Vulkan device: %d.\n", res);
-                    return AVERROR(ENOSYS);
-                }
-                av_log(avctx, AV_LOG_VERBOSE, "AMF initialisation succeeded via Vulkan.\n");
-            }
-        }
-    }
-    return 0;
-}
-
 static int amf_init_encoder(AVCodecContext *avctx)
 {
-    AmfContext        *ctx = avctx->priv_data;
-    const wchar_t     *codec_id = NULL;
-    AMF_RESULT         res;
-    enum AVPixelFormat pix_fmt;
+    AMFEncoderContext  *ctx = avctx->priv_data;
+    const wchar_t      *codec_id = NULL;
+    AMF_RESULT          res;
+    enum AVPixelFormat  pix_fmt;
+    AVHWDeviceContext  *hw_device_ctx = (AVHWDeviceContext*)ctx->device_ctx_ref->data;
+    AVAMFDeviceContext *amf_device_ctx = (AVAMFDeviceContext *)hw_device_ctx->hwctx;
 
     switch (avctx->codec->id) {
         case AV_CODEC_ID_H264:
@@ -410,20 +142,20 @@ static int amf_init_encoder(AVCodecContext *avctx)
     }
     AMF_RETURN_IF_FALSE(ctx, codec_id != NULL, AVERROR(EINVAL), "Codec %d is not supported\n", avctx->codec->id);
 
-    if (ctx->hw_frames_ctx)
-        pix_fmt = ((AVHWFramesContext*)ctx->hw_frames_ctx->data)->sw_format;
+    if (avctx->hw_frames_ctx)
+        pix_fmt = ((AVHWFramesContext*)avctx->hw_frames_ctx->data)->sw_format;
     else
         pix_fmt = avctx->pix_fmt;
 
     if (pix_fmt == AV_PIX_FMT_P010) {
-        AMF_RETURN_IF_FALSE(ctx, ctx->version >= AMF_MAKE_FULL_VERSION(1, 4, 32, 0), AVERROR_UNKNOWN, "10-bit encoder is not supported by AMD GPU drivers versions lower than 23.30.\n");
+        AMF_RETURN_IF_FALSE(ctx, amf_device_ctx->version >= AMF_MAKE_FULL_VERSION(1, 4, 32, 0), AVERROR_UNKNOWN, "10-bit encoder is not supported by AMD GPU drivers versions lower than 23.30.\n");
     }
 
-    ctx->format = amf_av_to_amf_format(pix_fmt);
+    ctx->format = av_av_to_amf_format(pix_fmt);
     AMF_RETURN_IF_FALSE(ctx, ctx->format != AMF_SURFACE_UNKNOWN, AVERROR(EINVAL),
                         "Format %s is not supported\n", av_get_pix_fmt_name(pix_fmt));
 
-    res = ctx->factory->pVtbl->CreateComponent(ctx->factory, ctx->context, codec_id, &ctx->encoder);
+    res = amf_device_ctx->factory->pVtbl->CreateComponent(amf_device_ctx->factory, amf_device_ctx->context, codec_id, &ctx->encoder);
     AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_ENCODER_NOT_FOUND, "CreateComponent(%ls) failed with error %d\n", codec_id, res);
 
     return 0;
@@ -431,12 +163,7 @@ static int amf_init_encoder(AVCodecContext *avctx)
 
 int av_cold ff_amf_encode_close(AVCodecContext *avctx)
 {
-    AmfContext *ctx = avctx->priv_data;
-
-    if (ctx->delayed_surface) {
-        ctx->delayed_surface->pVtbl->Release(ctx->delayed_surface);
-        ctx->delayed_surface = NULL;
-    }
+    AMFEncoderContext *ctx = avctx->priv_data;
 
     if (ctx->encoder) {
         ctx->encoder->pVtbl->Terminate(ctx->encoder);
@@ -444,27 +171,7 @@ int av_cold ff_amf_encode_close(AVCodecContext *avctx)
         ctx->encoder = NULL;
     }
 
-    if (ctx->context) {
-        ctx->context->pVtbl->Terminate(ctx->context);
-        ctx->context->pVtbl->Release(ctx->context);
-        ctx->context = NULL;
-    }
-    av_buffer_unref(&ctx->hw_device_ctx);
-    av_buffer_unref(&ctx->hw_frames_ctx);
-
-    if (ctx->trace) {
-        ctx->trace->pVtbl->UnregisterWriter(ctx->trace, FFMPEG_AMF_WRITER_ID);
-    }
-    if (ctx->library) {
-        dlclose(ctx->library);
-        ctx->library = NULL;
-    }
-    ctx->trace = NULL;
-    ctx->debug = NULL;
-    ctx->factory = NULL;
-    ctx->version = 0;
-    ctx->delayed_drain = 0;
-    av_frame_free(&ctx->delayed_frame);
+    av_buffer_unref(&ctx->device_ctx_ref);
     av_fifo_freep2(&ctx->timestamp_list);
 
     return 0;
@@ -474,8 +181,8 @@ static int amf_copy_surface(AVCodecContext *avctx, const AVFrame *frame,
     AMFSurface* surface)
 {
     AMFPlane *plane;
-    uint8_t  *dst_data[4];
-    int       dst_linesize[4];
+    uint8_t  *dst_data[4] = {0};
+    int       dst_linesize[4] = {0};
     int       planes;
     int       i;
 
@@ -496,7 +203,7 @@ static int amf_copy_surface(AVCodecContext *avctx, const AVFrame *frame,
 
 static int amf_copy_buffer(AVCodecContext *avctx, AVPacket *pkt, AMFBuffer *buffer)
 {
-    AmfContext      *ctx = avctx->priv_data;
+    AMFEncoderContext *ctx = avctx->priv_data;
     int              ret;
     AMFVariantStruct var = {0};
     int64_t          timestamp = AV_NOPTS_VALUE;
@@ -558,14 +265,51 @@ static int amf_copy_buffer(AVCodecContext *avctx, AVPacket *pkt, AMFBuffer *buff
 int ff_amf_encode_init(AVCodecContext *avctx)
 {
     int ret;
+    AMFEncoderContext *ctx = avctx->priv_data;
 
-    if ((ret = amf_load_library(avctx)) == 0) {
-        if ((ret = amf_init_context(avctx)) == 0) {
-            if ((ret = amf_init_encoder(avctx)) == 0) {
-                return 0;
+    // hardcoded to current HW queue size - will auto-realloc if too small
+    ctx->timestamp_list = av_fifo_alloc2(avctx->max_b_frames + 16, sizeof(int64_t),
+                                         AV_FIFO_FLAG_AUTO_GROW);
+    if (!ctx->timestamp_list) {
+        return AVERROR(ENOMEM);
+    }
+    ctx->dts_delay = 0;
+
+    ctx->hwsurfaces_in_queue = 0;
+    ctx->hwsurfaces_in_queue_max = 16;
+
+    AVHWDeviceContext   *hwdev_ctx = NULL;
+    if (avctx->hw_device_ctx) {
+        hwdev_ctx = (AVHWDeviceContext*)avctx->hw_device_ctx->data;
+        if (hwdev_ctx->type == AV_HWDEVICE_TYPE_AMF)
+        {
+            ctx->device_ctx_ref = av_buffer_ref(avctx->hw_device_ctx);
+        }
+        else {
+            ret = av_hwdevice_ctx_create_derived(&ctx->device_ctx_ref, AV_HWDEVICE_TYPE_AMF, avctx->hw_device_ctx, 0);
+            AMF_RETURN_IF_FALSE(avctx, ret == 0, ret, "Failed to create derived AMF device context: %s\n", av_err2str(ret));
+        }
+    } else if (avctx->hw_frames_ctx) {
+        AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
+        if (frames_ctx->device_ref ) {
+            if (frames_ctx->format == AV_PIX_FMT_AMF_SURFACE) {
+                ctx->device_ctx_ref = av_buffer_ref(frames_ctx->device_ref);
+            }
+            else {
+                ret = av_hwdevice_ctx_create_derived(&ctx->device_ctx_ref, AV_HWDEVICE_TYPE_AMF, frames_ctx->device_ref, 0);
+                AMF_RETURN_IF_FALSE(avctx, ret == 0, ret, "Failed to create derived AMF device context: %s\n", av_err2str(ret));
             }
         }
     }
+    else {
+        ret = av_hwdevice_ctx_create(&ctx->device_ctx_ref, AV_HWDEVICE_TYPE_AMF, NULL, NULL, 0);
+        AMF_RETURN_IF_FALSE(avctx, ret == 0, ret, "Failed to create  hardware device context (AMF) : %s\n", av_err2str(ret));
+    }
+
+    if ((ret = amf_init_encoder(avctx)) == 0) {
+        return 0;
+    }
+
     ff_amf_encode_close(avctx);
     return ret;
 }
@@ -642,31 +386,27 @@ static void amf_release_buffer_with_frame_ref(AMFBuffer *frame_ref_storage_buffe
 
 int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
 {
-    AmfContext *ctx = avctx->priv_data;
+    AMFEncoderContext     *ctx = avctx->priv_data;
+    AVHWDeviceContext     *hw_device_ctx = (AVHWDeviceContext*)ctx->device_ctx_ref->data;
+    AVAMFDeviceContext    *amf_device_ctx = (AVAMFDeviceContext *)hw_device_ctx->hwctx;
     AMFSurface *surface;
     AMF_RESULT  res;
     int         ret;
     AMF_RESULT  res_query;
     AMFData    *data = NULL;
-    AVFrame    *frame = ctx->delayed_frame;
+    AVFrame    *frame = av_frame_alloc();
     int         block_and_wait;
-    int         query_output_data_flag = 0;
-    AMF_RESULT  res_resubmit;
 
     if (!ctx->encoder)
         return AVERROR(EINVAL);
 
-    if (!frame->buf[0]) {
-        ret = ff_encode_get_frame(avctx, frame);
-        if (ret < 0 && ret != AVERROR_EOF)
-            return ret;
-    }
+    ret = ff_encode_get_frame(avctx, frame);
+    if (ret < 0 && ret != AVERROR_EOF)
+        return ret;
 
     if (!frame->buf[0]) { // submit drain
         if (!ctx->eof) { // submit drain one time only
-            if (ctx->delayed_surface != NULL) {
-                ctx->delayed_drain = 1; // input queue is full: resubmit Drain() in ff_amf_receive_packet
-            } else if(!ctx->delayed_drain) {
+            if(!ctx->delayed_drain) {
                 res = ctx->encoder->pVtbl->Drain(ctx->encoder);
                 if (res == AMF_INPUT_FULL) {
                     ctx->delayed_drain = 1; // input queue is full: resubmit Drain() in ff_amf_receive_packet
@@ -678,7 +418,7 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
                 }
             }
         }
-    } else if (!ctx->delayed_surface) { // submit frame
+    } else { // submit frame
         int hw_surface = 0;
 
         // prepare surface from frame
@@ -690,12 +430,12 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
                 ID3D11Texture2D *texture = (ID3D11Texture2D*)frame->data[0]; // actual texture
                 int index = (intptr_t)frame->data[1]; // index is a slice in texture array is - set to tell AMF which slice to use
 
-                av_assert0(frame->hw_frames_ctx       && ctx->hw_frames_ctx &&
-                           frame->hw_frames_ctx->data == ctx->hw_frames_ctx->data);
+                av_assert0(frame->hw_frames_ctx       && avctx->hw_frames_ctx &&
+                           frame->hw_frames_ctx->data == avctx->hw_frames_ctx->data);
 
                 texture->lpVtbl->SetPrivateData(texture, &AMFTextureArrayIndexGUID, sizeof(index), &index);
 
-                res = ctx->context->pVtbl->CreateSurfaceFromDX11Native(ctx->context, texture, &surface, NULL); // wrap to AMF surface
+                res = amf_device_ctx->context->pVtbl->CreateSurfaceFromDX11Native(amf_device_ctx->context, texture, &surface, NULL); // wrap to AMF surface
                 AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "CreateSurfaceFromDX11Native() failed  with error %d\n", res);
 
                 hw_surface = 1;
@@ -707,16 +447,23 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
             {
                 IDirect3DSurface9 *texture = (IDirect3DSurface9 *)frame->data[3]; // actual texture
 
-                res = ctx->context->pVtbl->CreateSurfaceFromDX9Native(ctx->context, texture, &surface, NULL); // wrap to AMF surface
+                res = amf_device_ctx->context->pVtbl->CreateSurfaceFromDX9Native(amf_device_ctx->context, texture, &surface, NULL); // wrap to AMF surface
                 AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "CreateSurfaceFromDX9Native() failed  with error %d\n", res);
 
                 hw_surface = 1;
             }
             break;
 #endif
+        case AV_PIX_FMT_AMF_SURFACE:
+            {
+                surface = (AMFSurface*)frame->data[0];
+                surface->pVtbl->Acquire(surface);
+                hw_surface = 1;
+            }
+            break;
         default:
             {
-                res = ctx->context->pVtbl->AllocSurface(ctx->context, AMF_MEMORY_HOST, ctx->format, avctx->width, avctx->height, &surface);
+                res = amf_device_ctx->context->pVtbl->AllocSurface(amf_device_ctx->context, AMF_MEMORY_HOST, ctx->format, avctx->width, avctx->height, &surface);
                 AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "AllocSurface() failed  with error %d\n", res);
                 amf_copy_surface(avctx, frame, surface);
             }
@@ -729,7 +476,7 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
             // input HW surfaces can be vertically aligned by 16; tell AMF the real size
             surface->pVtbl->SetCrop(surface, 0, 0, frame->width, frame->height);
 
-            frame_ref_storage_buffer = amf_create_buffer_with_frame_ref(frame, ctx->context);
+            frame_ref_storage_buffer = amf_create_buffer_with_frame_ref(frame, amf_device_ctx->context);
             AMF_RETURN_IF_FALSE(ctx, frame_ref_storage_buffer != NULL, AVERROR(ENOMEM), "create_buffer_with_frame_ref() returned NULL\n");
 
             res = amf_set_property_buffer(surface, L"av_frame_ref", frame_ref_storage_buffer);
@@ -741,7 +488,7 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
         // HDR10 metadata
         if (frame->color_trc == AVCOL_TRC_SMPTE2084) {
             AMFBuffer * hdrmeta_buffer = NULL;
-            res = ctx->context->pVtbl->AllocBuffer(ctx->context, AMF_MEMORY_HOST, sizeof(AMFHDRMetadata), &hdrmeta_buffer);
+            res = amf_device_ctx->context->pVtbl->AllocBuffer(amf_device_ctx->context, AMF_MEMORY_HOST, sizeof(AMFHDRMetadata), &hdrmeta_buffer);
             if (res == AMF_OK) {
                 AMFHDRMetadata * hdrmeta = (AMFHDRMetadata*)hdrmeta_buffer->pVtbl->GetNative(hdrmeta_buffer);
                 if (amf_save_hdr_metadata(avctx, frame, hdrmeta) == 0) {
@@ -818,7 +565,7 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
         res = ctx->encoder->pVtbl->SubmitInput(ctx->encoder, (AMFData*)surface);
         if (res == AMF_INPUT_FULL) { // handle full queue
             //store surface for later submission
-            ctx->delayed_surface = surface;
+            av_usleep(1000); // wait and poll again
         } else {
             int64_t pts = frame->pts;
             surface->pVtbl->Release(surface);
@@ -835,75 +582,42 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
     do {
         block_and_wait = 0;
         // poll data
-        if (!avpkt->data && !avpkt->buf) {
-            res_query = ctx->encoder->pVtbl->QueryOutput(ctx->encoder, &data);
-            if (data) {
-                // copy data to packet
-                AMFBuffer *buffer;
-                AMFGuid guid = IID_AMFBuffer();
-                query_output_data_flag = 1;
-                data->pVtbl->QueryInterface(data, &guid, (void**)&buffer); // query for buffer interface
-                ret = amf_copy_buffer(avctx, avpkt, buffer);
-
-                buffer->pVtbl->Release(buffer);
-
-                if (data->pVtbl->HasProperty(data, L"av_frame_ref")) {
-                    AMFBuffer* frame_ref_storage_buffer;
-                    res = amf_get_property_buffer(data, L"av_frame_ref", &frame_ref_storage_buffer);
-                    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetProperty failed for \"av_frame_ref\" with error %d\n", res);
-                    amf_release_buffer_with_frame_ref(frame_ref_storage_buffer);
-                    ctx->hwsurfaces_in_queue--;
-                }
-
-                data->pVtbl->Release(data);
 
-                AMF_RETURN_IF_FALSE(ctx, ret >= 0, ret, "amf_copy_buffer() failed with error %d\n", ret);
+        res_query = ctx->encoder->pVtbl->QueryOutput(ctx->encoder, &data);
+        if (data) {
+            // copy data to packet
+            AMFBuffer *buffer;
+            AMFGuid guid = IID_AMFBuffer();
+            data->pVtbl->QueryInterface(data, &guid, (void**)&buffer); // query for buffer interface
+            ret = amf_copy_buffer(avctx, avpkt, buffer);
+
+            buffer->pVtbl->Release(buffer);
+
+            if (data->pVtbl->HasProperty(data, L"av_frame_ref")) {
+                AMFBuffer* frame_ref_storage_buffer;
+                res = amf_get_property_buffer(data, L"av_frame_ref", &frame_ref_storage_buffer);
+                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "GetProperty failed for \"av_frame_ref\" with error %d\n", res);
+                amf_release_buffer_with_frame_ref(frame_ref_storage_buffer);
+                ctx->hwsurfaces_in_queue--;
             }
-        }
-        res_resubmit = AMF_OK;
-        if (ctx->delayed_surface != NULL) { // try to resubmit frame
-            if (ctx->delayed_surface->pVtbl->HasProperty(ctx->delayed_surface, L"av_frame_hdrmeta")) {
-                AMFBuffer * hdrmeta_buffer = NULL;
-                res = amf_get_property_buffer((AMFData *)ctx->delayed_surface, L"av_frame_hdrmeta", &hdrmeta_buffer);
-                AMF_RETURN_IF_FALSE(avctx, res == AMF_OK, AVERROR_UNKNOWN, "GetProperty failed for \"av_frame_hdrmeta\" with error %d\n", res);
-                switch (avctx->codec->id) {
-                case AV_CODEC_ID_H264:
-                    AMF_ASSIGN_PROPERTY_INTERFACE(res, ctx->encoder, AMF_VIDEO_ENCODER_INPUT_HDR_METADATA, hdrmeta_buffer); break;
-                case AV_CODEC_ID_HEVC:
-                    AMF_ASSIGN_PROPERTY_INTERFACE(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_INPUT_HDR_METADATA, hdrmeta_buffer); break;
-                case AV_CODEC_ID_AV1:
-                    AMF_ASSIGN_PROPERTY_INTERFACE(res, ctx->encoder, AMF_VIDEO_ENCODER_AV1_INPUT_HDR_METADATA, hdrmeta_buffer); break;
-                }
-                hdrmeta_buffer->pVtbl->Release(hdrmeta_buffer);
-            }
-            res_resubmit = ctx->encoder->pVtbl->SubmitInput(ctx->encoder, (AMFData*)ctx->delayed_surface);
-            if (res_resubmit != AMF_INPUT_FULL) {
-                int64_t pts = ctx->delayed_surface->pVtbl->GetPts(ctx->delayed_surface);
-                ctx->delayed_surface->pVtbl->Release(ctx->delayed_surface);
-                ctx->delayed_surface = NULL;
-                av_frame_unref(ctx->delayed_frame);
-                AMF_RETURN_IF_FALSE(ctx, res_resubmit == AMF_OK, AVERROR_UNKNOWN, "Repeated SubmitInput() failed with error %d\n", res_resubmit);
-
-                ret = av_fifo_write(ctx->timestamp_list, &pts, 1);
-                if (ret < 0)
-                    return ret;
-            }
-        } else if (ctx->delayed_drain) { // try to resubmit drain
-            res = ctx->encoder->pVtbl->Drain(ctx->encoder);
-            if (res != AMF_INPUT_FULL) {
-                ctx->delayed_drain = 0;
-                ctx->eof = 1; // drain started
-                AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Repeated Drain() failed with error %d\n", res);
-            } else {
-                av_log(avctx, AV_LOG_WARNING, "Data acquired but delayed drain submission got AMF_INPUT_FULL- should not happen\n");
-            }
-        }
 
-        if (query_output_data_flag == 0) {
-            if (res_resubmit == AMF_INPUT_FULL || ctx->delayed_drain || (ctx->eof && res_query != AMF_EOF) || (ctx->hwsurfaces_in_queue >= ctx->hwsurfaces_in_queue_max)) {
-                block_and_wait = 1;
-                av_usleep(1000);
+            data->pVtbl->Release(data);
+
+            AMF_RETURN_IF_FALSE(ctx, ret >= 0, ret, "amf_copy_buffer() failed with error %d\n", ret);
+
+            if (ctx->delayed_drain) { // try to resubmit drain
+                res = ctx->encoder->pVtbl->Drain(ctx->encoder);
+                if (res != AMF_INPUT_FULL) {
+                    ctx->delayed_drain = 0;
+                    ctx->eof = 1; // drain started
+                    AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, "Repeated Drain() failed with error %d\n", res);
+                } else {
+                    av_log(avctx, AV_LOG_WARNING, "Data acquired but delayed drain submission got AMF_INPUT_FULL- should not happen\n");
+                }
             }
+        } else if (ctx->delayed_drain || (ctx->eof && res_query != AMF_EOF) || (ctx->hwsurfaces_in_queue >= ctx->hwsurfaces_in_queue_max)) {
+            block_and_wait = 1;
+            av_usleep(1000); // wait and poll again
         }
     } while (block_and_wait);
 
@@ -961,5 +675,7 @@ const AVCodecHWConfigInternal *const ff_amfenc_hw_configs[] = {
     HW_CONFIG_ENCODER_FRAMES(DXVA2_VLD, DXVA2),
     HW_CONFIG_ENCODER_DEVICE(NONE,      DXVA2),
 #endif
+    HW_CONFIG_ENCODER_FRAMES(AMF_SURFACE,   AMF),
+    HW_CONFIG_ENCODER_DEVICE(NONE,          AMF),
     NULL,
 };
diff --git a/libavcodec/amfenc.h b/libavcodec/amfenc.h
index 0f2abcbd82..5063d6c0d4 100644
--- a/libavcodec/amfenc.h
+++ b/libavcodec/amfenc.h
@@ -33,46 +33,25 @@
 
 #define  MAX_LOOKAHEAD_DEPTH 41
 
-/**
-* AMF trace writer callback class
-* Used to capture all AMF logging
-*/
-
-typedef struct AmfTraceWriter {
-    AMFTraceWriterVtbl *vtbl;
-    AVCodecContext     *avctx;
-} AmfTraceWriter;
-
 /**
 * AMF encoder context
 */
 
-typedef struct AmfContext {
+typedef struct AMFEncoderContext {
     AVClass            *avclass;
     // access to AMF runtime
-    amf_handle          library; ///< handle to DLL library
-    AMFFactory         *factory; ///< pointer to AMF factory
-    AMFDebug           *debug;   ///< pointer to AMF debug interface
-    AMFTrace           *trace;   ///< pointer to AMF trace interface
-
-    amf_uint64          version; ///< version of AMF runtime
-    AmfTraceWriter      tracer;  ///< AMF writer registered with AMF
-    AMFContext         *context; ///< AMF context
+    AVBufferRef        *device_ctx_ref;
+
     //encoder
     AMFComponent       *encoder; ///< AMF encoder object
     amf_bool            eof;     ///< flag indicating EOF happened
     AMF_SURFACE_FORMAT  format;  ///< AMF surface format
 
-    AVBufferRef        *hw_device_ctx; ///< pointer to HW accelerator (decoder)
-    AVBufferRef        *hw_frames_ctx; ///< pointer to HW accelerator (frame allocator)
-
     int                 hwsurfaces_in_queue;
     int                 hwsurfaces_in_queue_max;
 
     // helpers to handle async calls
     int                 delayed_drain;
-    AMFSurface         *delayed_surface;
-    AVFrame            *delayed_frame;
 
     // shift dts back by max_b_frames in timing
     AVFifo             *timestamp_list;
@@ -151,7 +130,7 @@ typedef struct AmfContext {
     int                 pa_adaptive_mini_gop;
 
 
-} AmfContext;
+} AMFEncoderContext;
 
 extern const AVCodecHWConfigInternal *const ff_amfenc_hw_configs[];
 
diff --git a/libavcodec/amfenc_av1.c b/libavcodec/amfenc_av1.c
index b40d54f70c..fad4733a40 100644
--- a/libavcodec/amfenc_av1.c
+++ b/libavcodec/amfenc_av1.c
@@ -26,7 +26,7 @@
 #define AMF_VIDEO_ENCODER_AV1_CAP_WIDTH_ALIGNMENT_FACTOR_LOCAL                L"Av1WidthAlignmentFactor"          // amf_int64; default = 1
 #define AMF_VIDEO_ENCODER_AV1_CAP_HEIGHT_ALIGNMENT_FACTOR_LOCAL               L"Av1HeightAlignmentFactor"         // amf_int64; default = 1
 
-#define OFFSET(x) offsetof(AmfContext, x)
+#define OFFSET(x) offsetof(AMFEncoderContext, x)
 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
 
@@ -178,11 +178,11 @@ static av_cold int amf_encode_init_av1(AVCodecContext* avctx)
 {
     int                 ret = 0;
     AMF_RESULT          res = AMF_OK;
-    AmfContext* ctx = avctx->priv_data;
+    AMFEncoderContext  *ctx = avctx->priv_data;
     AMFVariantStruct    var = { 0 };
     amf_int64           profile = 0;
     amf_int64           profile_level = 0;
-    AMFBuffer* buffer;
+    AMFBuffer          *buffer;
     AMFGuid             guid;
     AMFRate             framerate;
     AMFSize             framesize = AMFConstructSize(avctx->width, avctx->height);
@@ -623,7 +623,7 @@ const FFCodec ff_av1_amf_encoder = {
     .init           = amf_encode_init_av1,
     FF_CODEC_RECEIVE_PACKET_CB(ff_amf_receive_packet),
     .close          = ff_amf_encode_close,
-    .priv_data_size = sizeof(AmfContext),
+    .priv_data_size = sizeof(AMFEncoderContext),
     .p.priv_class     = &av1_amf_class,
     .defaults       = defaults,
     .p.capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
diff --git a/libavcodec/amfenc_h264.c b/libavcodec/amfenc_h264.c
index 959be9eab6..f82edd3708 100644
--- a/libavcodec/amfenc_h264.c
+++ b/libavcodec/amfenc_h264.c
@@ -24,7 +24,7 @@
 #include "codec_internal.h"
 #include <AMF/components/PreAnalysis.h>
 
-#define OFFSET(x) offsetof(AmfContext, x)
+#define OFFSET(x) offsetof(AMFEncoderContext, x)
 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 
 static const AVOption options[] = {
@@ -193,7 +193,7 @@ static av_cold int amf_encode_init_h264(AVCodecContext *avctx)
 {
     int                              ret = 0;
     AMF_RESULT                       res = AMF_OK;
-    AmfContext                      *ctx = avctx->priv_data;
+    AMFEncoderContext               *ctx = avctx->priv_data;
     AMFVariantStruct                 var = { 0 };
     amf_int64                        profile = 0;
     amf_int64                        profile_level = 0;
@@ -595,7 +595,7 @@ const FFCodec ff_h264_amf_encoder = {
     .init           = amf_encode_init_h264,
     FF_CODEC_RECEIVE_PACKET_CB(ff_amf_receive_packet),
     .close          = ff_amf_encode_close,
-    .priv_data_size = sizeof(AmfContext),
+    .priv_data_size = sizeof(AMFEncoderContext),
     .p.priv_class   = &h264_amf_class,
     .defaults       = defaults,
     .p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
diff --git a/libavcodec/amfenc_hevc.c b/libavcodec/amfenc_hevc.c
index f9f6f8adb3..77b331c400 100644
--- a/libavcodec/amfenc_hevc.c
+++ b/libavcodec/amfenc_hevc.c
@@ -23,7 +23,7 @@
 #include "codec_internal.h"
 #include <AMF/components/PreAnalysis.h>
 
-#define OFFSET(x) offsetof(AmfContext, x)
+#define OFFSET(x) offsetof(AMFEncoderContext, x)
 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 
 static const AVOption options[] = {
@@ -158,7 +158,7 @@ static av_cold int amf_encode_init_hevc(AVCodecContext *avctx)
 {
     int                 ret = 0;
     AMF_RESULT          res = AMF_OK;
-    AmfContext         *ctx = avctx->priv_data;
+    AMFEncoderContext  *ctx = avctx->priv_data;
     AMFVariantStruct    var = {0};
     amf_int64           profile = 0;
     amf_int64           profile_level = 0;
@@ -530,7 +530,7 @@ const FFCodec ff_hevc_amf_encoder = {
     .init           = amf_encode_init_hevc,
     FF_CODEC_RECEIVE_PACKET_CB(ff_amf_receive_packet),
     .close          = ff_amf_encode_close,
-    .priv_data_size = sizeof(AmfContext),
+    .priv_data_size = sizeof(AMFEncoderContext),
     .p.priv_class   = &hevc_amf_class,
     .defaults       = defaults,
     .p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
-- 
2.38.1.windows.1



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