[FFmpeg-devel] [PATCH] hwcontext_vulkan: add option to disable video queues when creating a device

[Lynne]

This helps reduce queue usage even further.
---
 libavutil/hwcontext_vulkan.c | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/libavutil/hwcontext_vulkan.c b/libavutil/hwcontext_vulkan.c
index 88145ef2d0..f31020c416 100644
--- a/libavutil/hwcontext_vulkan.c
+++ b/libavutil/hwcontext_vulkan.c
@@ -147,6 +147,9 @@ typedef struct VulkanDevicePriv {
     /* Disable host image transfer */
     int disable_host_transfer;
 
+    /* Disable all video support */
+    int disable_video;
+
     /* Maximum queues */
     int limit_queues;
 
@@ -1540,14 +1543,16 @@ static int setup_queue_families(AVHWDeviceContext *ctx, VkDeviceCreateInfo *cd)
     PICK_QF(VK_QUEUE_COMPUTE_BIT, VK_VIDEO_CODEC_OPERATION_NONE_KHR);
     PICK_QF(VK_QUEUE_TRANSFER_BIT, VK_VIDEO_CODEC_OPERATION_NONE_KHR);
 
-    PICK_QF(VK_QUEUE_VIDEO_ENCODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_KHR);
-    PICK_QF(VK_QUEUE_VIDEO_DECODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR);
+    if (!p->disable_video) {
+        PICK_QF(VK_QUEUE_VIDEO_ENCODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_KHR);
+        PICK_QF(VK_QUEUE_VIDEO_DECODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR);
 
-    PICK_QF(VK_QUEUE_VIDEO_ENCODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR);
-    PICK_QF(VK_QUEUE_VIDEO_DECODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR);
+        PICK_QF(VK_QUEUE_VIDEO_ENCODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR);
+        PICK_QF(VK_QUEUE_VIDEO_DECODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR);
 
-    PICK_QF(VK_QUEUE_VIDEO_ENCODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_ENCODE_AV1_BIT_KHR);
-    PICK_QF(VK_QUEUE_VIDEO_DECODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_DECODE_AV1_BIT_KHR);
+        PICK_QF(VK_QUEUE_VIDEO_ENCODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_ENCODE_AV1_BIT_KHR);
+        PICK_QF(VK_QUEUE_VIDEO_DECODE_BIT_KHR, VK_VIDEO_CODEC_OPERATION_DECODE_AV1_BIT_KHR);
+    }
 
     av_free(qf);
     av_free(qf_vid);
@@ -1764,6 +1769,11 @@ static int vulkan_device_create_internal(AVHWDeviceContext *ctx,
     if (opt_d)
         p->limit_queues = strtol(opt_d->value, NULL, 10);
 
+    /* Disable video if really needed */
+    opt_d = av_dict_get(opts, "disable_video", NULL, 0);
+    if (opt_d)
+        p->disable_video = strtol(opt_d->value, NULL, 10);
+
     /* The disable_multiplane argument takes precedent over the option */
     p->disable_multiplane = disable_multiplane;
     if (!p->disable_multiplane) {
-- 
2.49.0.395.g12beb8f557c