PR #20912 opened by mkver
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20912
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20912.patch

This reverts commit 62184be5486ec06d6976c20931b30738c8e83fd8.
It includes a private header (lavu/mutex.h) in a public header
(hwcontext_amf.h).


>From 446aeebee3575ff4a605ac0d94f62094a5afef3f Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <[email protected]>
Date: Thu, 13 Nov 2025 15:56:16 +0100
Subject: [PATCH] Revert "avutil/hwcontext_amf: Simplified blocking before
 frame submission"

This reverts commit 62184be5486ec06d6976c20931b30738c8e83fd8.
It includes a private header (lavu/mutex.h) in a public header
(hwcontext_amf.h).

Signed-off-by: Andreas Rheinhardt <[email protected]>
---
 libavcodec/amfenc.c       | 93 ++++++++++++++++++++++++++++++++++++---
 libavutil/hwcontext_amf.c |  6 +--
 libavutil/hwcontext_amf.h |  2 -
 3 files changed, 90 insertions(+), 11 deletions(-)

diff --git a/libavcodec/amfenc.c b/libavcodec/amfenc.c
index 2174c5bdb2..f363192000 100644
--- a/libavcodec/amfenc.c
+++ b/libavcodec/amfenc.c
@@ -381,6 +381,89 @@ static AMF_RESULT amf_set_property_buffer(AMFSurface 
*object, const wchar_t *nam
     return res;
 }
 
+static AMF_RESULT amf_lock_context(AVCodecContext *avctx)
+{
+    AMFEncoderContext     *ctx = avctx->priv_data;
+    AVHWDeviceContext     *hw_device_ctx = 
(AVHWDeviceContext*)ctx->device_ctx_ref->data;
+    AVAMFDeviceContext    *amf_device_ctx = (AVAMFDeviceContext 
*)hw_device_ctx->hwctx;
+    AMF_RESULT res;
+
+    switch(amf_device_ctx->memory_type) {
+    case AMF_MEMORY_DX11:
+        res = 
amf_device_ctx->context->pVtbl->LockDX11(amf_device_ctx->context);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockDX11() 
failed  with error %d\n", res);
+        break;
+    case AMF_MEMORY_DX12:
+        {
+        AMFContext2 *context2 = NULL;
+        AMFGuid guid = IID_AMFContext2();
+        res = 
amf_device_ctx->context->pVtbl->QueryInterface(amf_device_ctx->context, &guid, 
(void**)&context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, 
"QueryInterface for AMFContext2 failed with error %d\n", res);
+        res = context2->pVtbl->LockDX12(context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockDX12() 
failed  with error %d\n", res);
+        context2->pVtbl->Release(context2);
+        }
+        break;
+    case AMF_MEMORY_DX9:
+        res = amf_device_ctx->context->pVtbl->LockDX9(amf_device_ctx->context);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockDX9() 
failed  with error %d\n", res);
+
+    case AMF_MEMORY_VULKAN:
+        {
+        AMFContext2 *context2 = NULL;
+        AMFGuid guid = IID_AMFContext2();
+        res = 
amf_device_ctx->context->pVtbl->QueryInterface(amf_device_ctx->context, &guid, 
(void**)&context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, 
"QueryInterface for AMFContext2 failed with error %d\n", res);
+        res = context2->pVtbl->LockVulkan(context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockVulkan() 
failed  with error %d\n", res);
+        context2->pVtbl->Release(context2);
+        }
+        break;
+    }
+    return AMF_OK;
+}
+static AMF_RESULT amf_unlock_context(AVCodecContext *avctx)
+{
+    AMFEncoderContext     *ctx = avctx->priv_data;
+    AVHWDeviceContext     *hw_device_ctx = 
(AVHWDeviceContext*)ctx->device_ctx_ref->data;
+    AVAMFDeviceContext    *amf_device_ctx = (AVAMFDeviceContext 
*)hw_device_ctx->hwctx;
+    AMF_RESULT res;
+
+    switch(amf_device_ctx->memory_type) {
+    case AMF_MEMORY_DX11:
+        res = 
amf_device_ctx->context->pVtbl->UnlockDX11(amf_device_ctx->context);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockDX11() 
failed  with error %d\n", res);
+        break;
+    case AMF_MEMORY_DX12:
+        {
+        AMFContext2 *context2 = NULL;
+        AMFGuid guid = IID_AMFContext2();
+        res = 
amf_device_ctx->context->pVtbl->QueryInterface(amf_device_ctx->context, &guid, 
(void**)&context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, 
"QueryInterface for AMFContext2 failed with error %d\n", res);
+        res = context2->pVtbl->UnlockDX12(context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockDX12() 
failed  with error %d\n", res);
+        context2->pVtbl->Release(context2);
+        }
+        break;
+    case AMF_MEMORY_DX9:
+        res = 
amf_device_ctx->context->pVtbl->UnlockDX9(amf_device_ctx->context);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockDX9() 
failed  with error %d\n", res);
+
+    case AMF_MEMORY_VULKAN:
+        {
+        AMFContext2 *context2 = NULL;
+        AMFGuid guid = IID_AMFContext2();
+        res = 
amf_device_ctx->context->pVtbl->QueryInterface(amf_device_ctx->context, &guid, 
(void**)&context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR_UNKNOWN, 
"QueryInterface for AMFContext2 failed with error %d\n", res);
+        res = context2->pVtbl->UnlockVulkan(context2);
+        AMF_RETURN_IF_FALSE(ctx, res == AMF_OK, AVERROR(ENOMEM), "LockVulkan() 
failed  with error %d\n", res);
+        context2->pVtbl->Release(context2);
+        }
+        break;
+    }
+    return AMF_OK;
+}
+
 static AMF_RESULT amf_store_attached_frame_ref(AMFEncoderContext *ctx, const 
AVFrame *frame, AMFSurface *surface)
 {
     AMF_RESULT res = AMF_FAIL;
@@ -560,14 +643,14 @@ static int amf_submit_frame(AVCodecContext *avctx, 
AVFrame    *frame, AMFSurface
 static int amf_submit_frame_locked(AVCodecContext *avctx, AVFrame *frame, 
AMFSurface **surface_resubmit)
 {
     int ret;
-    AMFEncoderContext     *ctx = avctx->priv_data;
-    AVHWDeviceContext     *hw_device_ctx = 
(AVHWDeviceContext*)ctx->device_ctx_ref->data;
-    AVAMFDeviceContext    *amf_device_ctx = (AVAMFDeviceContext 
*)hw_device_ctx->hwctx;
+    int locked = amf_lock_context(avctx);
+    if(locked != AMF_OK)
+        av_log(avctx, AV_LOG_WARNING, "amf_lock_context() failed with %d - 
should not happen\n", locked);
 
-    ff_mutex_lock(&amf_device_ctx->mutex);
     ret = amf_submit_frame(avctx, frame, surface_resubmit);
-    ff_mutex_unlock(&amf_device_ctx->mutex);
 
+    if(locked == AMF_OK)
+        amf_unlock_context(avctx);
     return ret;
 }
 static AMF_RESULT amf_query_output(AVCodecContext *avctx, AMFBuffer **buffer)
diff --git a/libavutil/hwcontext_amf.c b/libavutil/hwcontext_amf.c
index acd9627c68..20b9296e34 100644
--- a/libavutil/hwcontext_amf.c
+++ b/libavutil/hwcontext_amf.c
@@ -137,7 +137,7 @@ enum AVPixelFormat av_amf_to_av_format(enum 
AMF_SURFACE_FORMAT fmt)
             return format_map[i].av_format;
         }
     }
-    return AV_PIX_FMT_NONE;
+    return AMF_SURFACE_UNKNOWN;
 }
 
 static const enum AVPixelFormat supported_formats[] = {
@@ -378,7 +378,6 @@ static void amf_device_uninit(AVHWDeviceContext *device_ctx)
     }
 
     amf_ctx->version = 0;
-    ff_mutex_destroy(&amf_ctx->mutex);
 }
 
 static int amf_device_init(AVHWDeviceContext *ctx)
@@ -415,8 +414,7 @@ static int amf_device_init(AVHWDeviceContext *ctx)
         }
      }
 #endif
-    ff_mutex_init(&amf_ctx->mutex, NULL);
-    return 0;
+     return 0;
 }
 
 static int amf_load_library(AVAMFDeviceContext* amf_ctx,  void* avcl)
diff --git a/libavutil/hwcontext_amf.h b/libavutil/hwcontext_amf.h
index 5b726e3b9e..8823190697 100644
--- a/libavutil/hwcontext_amf.h
+++ b/libavutil/hwcontext_amf.h
@@ -26,7 +26,6 @@
 #include <AMF/core/Context.h>
 #include <AMF/core/Trace.h>
 #include <AMF/core/Debug.h>
-#include "thread.h"
 
 /**
  * This struct is allocated as AVHWDeviceContext.hwctx
@@ -39,7 +38,6 @@ typedef struct AVAMFDeviceContext {
     int64_t             version; ///< version of AMF runtime
     AMFContext         *context;
     AMF_MEMORY_TYPE     memory_type;
-       AVMutex             mutex;
 } AVAMFDeviceContext;
 
 enum AMF_SURFACE_FORMAT av_av_to_amf_format(enum AVPixelFormat fmt);
-- 
2.49.1

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