From 2d15382e3115b011fa21987bb707369573c7c76f Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Thu, 21 Dec 2023 18:12:19 -0600
Subject: [PATCH] Fix libplacebo renderer build on Windows

---
 app/streaming/video/ffmpeg-renderers/plvk.cpp |  6 +++---
 app/streaming/video/ffmpeg-renderers/plvk.h   |  4 ++++
 app/streaming/video/ffmpeg-renderers/plvk_c.c | 11 +++++++++++
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/app/streaming/video/ffmpeg-renderers/plvk.cpp b/app/streaming/video/ffmpeg-renderers/plvk.cpp
index 2eb8eb6f..9d671577 100644
--- a/app/streaming/video/ffmpeg-renderers/plvk.cpp
+++ b/app/streaming/video/ffmpeg-renderers/plvk.cpp
@@ -31,7 +31,7 @@ static const char *k_OptionalDeviceExtensions[] = {
     VK_EXT_IMAGE_DRM_FORMAT_MODIFIER_EXTENSION_NAME,
     VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME,
     VK_EXT_EXTERNAL_MEMORY_HOST_EXTENSION_NAME,
-#ifdef _WIN32
+#ifdef Q_OS_WIN32
     VK_KHR_EXTERNAL_MEMORY_WIN32_EXTENSION_NAME,
     VK_KHR_EXTERNAL_SEMAPHORE_WIN32_EXTENSION_NAME,
 #endif
@@ -350,7 +350,7 @@ bool PlVkRenderer::initialize(PDECODER_PARAMETERS params)
     }
     vkInstParams.get_proc_addr = (PFN_vkGetInstanceProcAddr)SDL_Vulkan_GetVkGetInstanceProcAddr();
     vkInstParams.extensions = instanceExtensions.data();
-    vkInstParams.num_extensions = instanceExtensions.size();
+    vkInstParams.num_extensions = (int)instanceExtensions.size();
     m_PlVkInstance = pl_vk_inst_create(m_Log, &vkInstParams);
     if (m_PlVkInstance == nullptr) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
@@ -735,7 +735,7 @@ void PlVkRenderer::renderFrame(AVFrame *frame)
     targetFrame.crop.y1 = dst.y + dst.h;
 
     // Render the video image and overlays into the swapchain buffer
-    targetFrame.num_overlays = overlays.size();
+    targetFrame.num_overlays = (int)overlays.size();
     targetFrame.overlays = overlays.data();
     if (!pl_render_image(m_Renderer, &mappedFrame, &targetFrame, &pl_render_fast_params)) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
diff --git a/app/streaming/video/ffmpeg-renderers/plvk.h b/app/streaming/video/ffmpeg-renderers/plvk.h
index 6683da86..366c74c0 100644
--- a/app/streaming/video/ffmpeg-renderers/plvk.h
+++ b/app/streaming/video/ffmpeg-renderers/plvk.h
@@ -2,6 +2,10 @@
 
 #include "renderer.h"
 
+#ifdef Q_OS_WIN32
+#define VK_USE_PLATFORM_WIN32_KHR
+#endif
+
 #include <libplacebo/log.h>
 #include <libplacebo/renderer.h>
 #include <libplacebo/vulkan.h>
diff --git a/app/streaming/video/ffmpeg-renderers/plvk_c.c b/app/streaming/video/ffmpeg-renderers/plvk_c.c
index da2ad81d..d189f28f 100644
--- a/app/streaming/video/ffmpeg-renderers/plvk_c.c
+++ b/app/streaming/video/ffmpeg-renderers/plvk_c.c
@@ -1,9 +1,20 @@
 // This compilation unit contains the implementations of libplacebo header-only libraries.
 // These must be compiled as C code, so they cannot be placed inside plvk.cpp.
 
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable: 4068) // unknown pragma
+#pragma warning(disable: 4244) // double -> float truncation warning
+#pragma warning(disable: 4267) // size_t -> int truncation warning
+#endif
+
 #define PL_LIBAV_IMPLEMENTATION 1
 #include <libplacebo/utils/libav.h>
 
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
 // Provide a dummy implementation of av_stream_get_side_data() to avoid having to link with libavformat
 uint8_t *av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, size_t *size)
 {