fix(realesrgan): fixed incorrect type for ncnn::Mat elemsize

Signed-off-by: k4yt3x <i@k4yt3x.com>

.github/FUNDING.yml

@@ -1,12 +1,2 @@
-# These are supported funding model platforms
-
 github: k4yt3x
 patreon: k4yt3x
-open_collective: # Replace with a single Open Collective username
-ko_fi: # Replace with a single Ko-fi username
-tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
-community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
-liberapay: # Replace with a single Liberapay username
-issuehunt: # Replace with a single IssueHunt username
-otechie: # Replace with a single Otechie username
-custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

CMakeLists.txt

@@ -28,6 +28,13 @@ if(CMAKE_BUILD_TYPE STREQUAL "Release")
     endif()
 endif()
 
+# Set global compile options for all targets
+if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+    add_compile_options(/W4 /permissive-)
+elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    add_compile_options(-Wall -Wextra -Wpedantic -Wconversion -Wshadow)
+endif()
+
 # Build options
 option(BUILD_SHARED_LIBS "Build libvideo2x as a shared library" ON)
 option(BUILD_VIDEO2X_CLI "Build the video2x executable" ON)
@@ -115,7 +122,6 @@ else()
 
     # OpenCV
     if (USE_SYSTEM_OPENCV)
-        cmake_policy(SET CMP0146 OLD)
         find_package(OpenCV REQUIRED)
         list(APPEND ALL_INCLUDE_DIRS ${OpenCV_INCLUDE_DIRS}/opencv2)
         list(APPEND ALL_LIBRARIES opencv_core opencv_videoio)
@@ -308,7 +314,6 @@ target_include_directories(libvideo2x PRIVATE
 
 # Compile options for the shared library
 target_compile_options(libvideo2x PRIVATE
-    -Wall
     -fPIC
     $<$<CONFIG:Release>:-Ofast>
     $<$<CONFIG:Debug>:-g -DDEBUG>
@@ -345,10 +350,7 @@ if (BUILD_VIDEO2X_CLI)
     )
 
     # Compile options for the executable
-    target_compile_options(video2x PRIVATE
-        -Wall
-        $<$<CONFIG:Debug>:-g -DDEBUG>
-    )
+    target_compile_options(video2x PRIVATE $<$<CONFIG:Debug>:-g -DDEBUG>)
 
     # Link the executable with the shared library
     target_link_libraries(video2x PRIVATE ${ALL_LIBRARIES} libvideo2x)

README.md

@@ -13,9 +13,9 @@
 
 ## 🌟 Version 6.0.0 Preview
 
-**[Direct download link for Windows (Installer)](https://github.com/k4yt3x/video2x/releases/download/6.0.0-beta.3/video2x-qt6-windows-amd64-installer.exe)**
+**[Direct download link for Windows (Installer)](https://github.com/k4yt3x/video2x/releases/download/6.0.0-beta.4/video2x-qt6-windows-amd64-installer.exe)**
 
-![6.0.0-beta-screenshot](https://github.com/user-attachments/assets/25d4a5f0-43dd-49af-bbc6-369111c7474f)
+![6.0.0-beta-screenshot](https://github.com/user-attachments/assets/bd9e0b82-67ee-4b62-a830-a694db6f5de3)
 
 Version 6.0.0 is a complete rewrite of this project in C/C++. It:
 

include/libvideo2x/libplacebo_filter.h

@@ -28,7 +28,7 @@ class LibplaceboFilter : public Filter {
     LibplaceboFilter(int width, int height, const std::filesystem::path &shader_path);
 
     // Destructor
-    virtual ~LibplaceboFilter();
+    virtual ~LibplaceboFilter() override;
 
     // Initializes the filter with decoder and encoder contexts
     int init(AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, AVBufferRef *hw_ctx) override;

include/libvideo2x/realesrgan_filter.h

@@ -36,7 +36,7 @@ class RealesrganFilter : public Filter {
     );
 
     // Destructor
-    virtual ~RealesrganFilter();
+    virtual ~RealesrganFilter() override;
 
     // Initializes the filter with decoder and encoder contexts
     int init(AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, AVBufferRef *hw_ctx) override;

scripts/download_anime4k_glsl.py

@@ -1,46 +0,0 @@
-#!/usr/bin/python
-# -*- coding: utf-8 -*-
-import shutil
-from pathlib import Path
-
-import requests
-
-ANIME4K_COMMIT = "master"
-GITHUB_GLSL_ROOT = (
-    f"https://raw.githubusercontent.com/bloc97/Anime4K/{ANIME4K_COMMIT}/glsl"
-)
-SHADERS_DIR = Path(__file__).parent.parent / "data"
-
-
-def download_and_combine_files():
-
-    modes = {
-        "ModeA": [
-            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Clamp_Highlights.glsl",
-            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_VL.glsl",
-            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_VL.glsl",
-            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x2.glsl",
-            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x4.glsl",
-            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_M.glsl",
-        ]
-    }
-
-    for mode in modes:
-        file_contents = ""
-        for file in modes[mode]:
-            response = requests.get(file, timeout=5)
-            response.raise_for_status()
-            file_contents += response.text + "\n"
-
-        with (SHADERS_DIR / Path(f"Anime4K_{mode}.glsl")).open("w") as output_file:
-            output_file.write(file_contents)
-
-
-if __name__ == "__main__":
-    # clear shaders directory
-    if SHADERS_DIR.exists():
-        shutil.rmtree(SHADERS_DIR)
-    SHADERS_DIR.mkdir(exist_ok=True)
-
-    # download and combine shaders
-    download_and_combine_files()

scripts/download_merge_anime4k_glsl.py

@@ -0,0 +1,86 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+import shutil
+from pathlib import Path
+
+import requests
+
+ANIME4K_COMMIT = "master"
+GITHUB_GLSL_ROOT = (
+    f"https://raw.githubusercontent.com/bloc97/Anime4K/{ANIME4K_COMMIT}/glsl"
+)
+SHADERS_DIR = Path(__file__).parent.parent / "models" / "libplacebo"
+
+
+def download_and_combine_files():
+    modes = {
+        "a": [
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Clamp_Highlights.glsl",
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x2.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x4.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_M.glsl",
+        ],
+        "b": [
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Clamp_Highlights.glsl",
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_Soft_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x2.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x4.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_M.glsl",
+        ],
+        "c": [
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Clamp_Highlights.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale+Denoise/Anime4K_Upscale_Denoise_CNN_x2_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x2.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x4.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_M.glsl",
+        ],
+        "a+a": [
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Clamp_Highlights.glsl",
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_M.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x2.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x4.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_M.glsl",
+        ],
+        "b+b": [
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Clamp_Highlights.glsl",
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_Soft_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x2.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x4.glsl",
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_Soft_M.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_M.glsl",
+        ],
+        "c+a": [
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Clamp_Highlights.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale+Denoise/Anime4K_Upscale_Denoise_CNN_x2_VL.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x2.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_AutoDownscalePre_x4.glsl",
+            f"{GITHUB_GLSL_ROOT}/Restore/Anime4K_Restore_CNN_M.glsl",
+            f"{GITHUB_GLSL_ROOT}/Upscale/Anime4K_Upscale_CNN_x2_M.glsl",
+        ],
+    }
+
+    for mode in modes:
+        file_contents = ""
+        for file in modes[mode]:
+            response = requests.get(file, timeout=5)
+            response.raise_for_status()
+            file_contents += response.text + "\n"
+
+        with (SHADERS_DIR / Path(f"anime4k-{mode}.glsl")).open("w") as output_file:
+            output_file.write(file_contents)
+
+
+if __name__ == "__main__":
+    # clear shaders directory
+    if SHADERS_DIR.exists():
+        shutil.rmtree(SHADERS_DIR)
+    SHADERS_DIR.mkdir(exist_ok=True)
+
+    # download and combine shaders
+    download_and_combine_files()

src/conversions.cpp

@@ -1,5 +1,6 @@
 #include "conversions.h"
 
+#include <cstddef>
 #include <cstdio>
 
 #include <spdlog/spdlog.h>
@@ -79,14 +80,16 @@ ncnn::Mat avframe_to_ncnn_mat(AVFrame *frame) {
     // Allocate a new ncnn::Mat and copy the data
     int width = converted_frame->width;
     int height = converted_frame->height;
-    ncnn::Mat ncnn_image = ncnn::Mat(width, height, (size_t)3, 3);  // BGR has 3 channels
+    ncnn::Mat ncnn_image = ncnn::Mat(width, height, static_cast<size_t>(3), 3);
 
     // Manually copy the pixel data from AVFrame to the new ncnn::Mat
     const uint8_t *src_data = converted_frame->data[0];
     for (int y = 0; y < height; y++) {
         uint8_t *dst_row = ncnn_image.row<uint8_t>(y);
         const uint8_t *src_row = src_data + y * converted_frame->linesize[0];
-        memcpy(dst_row, src_row, width * 3);  // Copy 3 channels (BGR) per pixel
+
+        // Copy 3 channels (BGR) per pixel
+        memcpy(dst_row, src_row, static_cast<size_t>(width) * 3);
     }
 
     // If we allocated a converted frame, free it
@@ -143,7 +146,9 @@ AVFrame *ncnn_mat_to_avframe(const ncnn::Mat &mat, AVPixelFormat pix_fmt) {
     for (int y = 0; y < mat.h; y++) {
         uint8_t *dst_row = bgr_frame->data[0] + y * bgr_frame->linesize[0];
         const uint8_t *src_row = mat.row<const uint8_t>(y);
-        memcpy(dst_row, src_row, mat.w * 3);  // Copy 3 channels (BGR) per pixel
+
+        // Copy 3 channels (BGR) per pixel
+        memcpy(dst_row, src_row, static_cast<size_t>(mat.w) * 3);
     }
 
     // Step 3: Convert the BGR frame to the desired pixel format

src/decoder.cpp

@@ -9,7 +9,7 @@
 static enum AVPixelFormat hw_pix_fmt = AV_PIX_FMT_NONE;
 
 // Callback function to choose the hardware-accelerated pixel format
-static enum AVPixelFormat get_hw_format(AVCodecContext *ctx, const enum AVPixelFormat *pix_fmts) {
+static enum AVPixelFormat get_hw_format(AVCodecContext *_, const enum AVPixelFormat *pix_fmts) {
     for (const enum AVPixelFormat *p = pix_fmts; *p != AV_PIX_FMT_NONE; p++) {
         if (*p == hw_pix_fmt) {
             return *p;
@@ -55,7 +55,8 @@ int init_decoder(
     const AVCodec *decoder = avcodec_find_decoder(video_stream->codecpar->codec_id);
     if (!decoder) {
         spdlog::error(
-            "Failed to find decoder for codec ID {}", (int)video_stream->codecpar->codec_id
+            "Failed to find decoder for codec ID {}",
+            static_cast<int>(video_stream->codecpar->codec_id)
         );
         return AVERROR_DECODER_NOT_FOUND;
     }

src/encoder.cpp

@@ -93,7 +93,7 @@ int init_encoder(
 
     // Set the CRF and preset for any codecs that support it
     char crf_str[16];
-    snprintf(crf_str, sizeof(crf_str), "%.f", encoder_config->crf);
+    snprintf(crf_str, sizeof(crf_str), "%.f", static_cast<double>(encoder_config->crf));
     av_opt_set(codec_ctx->priv_data, "crf", crf_str, 0);
     av_opt_set(codec_ctx->priv_data, "preset", encoder_config->preset, 0);
 
@@ -116,7 +116,8 @@ int init_encoder(
 
     if (encoder_config->copy_streams) {
         // Allocate the stream map
-        *stream_map = (int *)av_malloc_array(ifmt_ctx->nb_streams, sizeof(**stream_map));
+        *stream_map =
+            reinterpret_cast<int *>(av_malloc_array(ifmt_ctx->nb_streams, sizeof(**stream_map)));
         if (!*stream_map) {
             spdlog::error("Could not allocate stream mapping");
             return AVERROR(ENOMEM);
@@ -126,7 +127,7 @@ int init_encoder(
         (*stream_map)[vstream_idx] = stream_index++;
 
         // Loop through each stream in the input file
-        for (int i = 0; i < ifmt_ctx->nb_streams; i++) {
+        for (int i = 0; i < static_cast<int>(ifmt_ctx->nb_streams); i++) {
             AVStream *in_stream = ifmt_ctx->streams[i];
             AVCodecParameters *in_codecpar = in_stream->codecpar;
 
@@ -142,21 +143,21 @@ int init_encoder(
             }
 
             // Create corresponding output stream
-            AVStream *out_stream = avformat_new_stream(fmt_ctx, NULL);
-            if (!out_stream) {
+            AVStream *out_copied_stream = avformat_new_stream(fmt_ctx, NULL);
+            if (!out_copied_stream) {
                 spdlog::error("Failed allocating output stream");
                 return AVERROR_UNKNOWN;
             }
 
-            ret = avcodec_parameters_copy(out_stream->codecpar, in_codecpar);
+            ret = avcodec_parameters_copy(out_copied_stream->codecpar, in_codecpar);
             if (ret < 0) {
                 spdlog::error("Failed to copy codec parameters");
                 return ret;
             }
-            out_stream->codecpar->codec_tag = 0;
+            out_copied_stream->codecpar->codec_tag = 0;
 
             // Copy time base
-            out_stream->time_base = in_stream->time_base;
+            out_copied_stream->time_base = in_stream->time_base;
 
             (*stream_map)[i] = stream_index++;
         }

src/fsutils.cpp

@@ -11,7 +11,7 @@
 #include <spdlog/spdlog.h>
 
 #if _WIN32
-std::filesystem::path get_executable_directory() {
+static std::filesystem::path get_executable_directory() {
     std::vector<wchar_t> filepath(MAX_PATH);
 
     // Get the executable path, expanding the buffer if necessary
@@ -36,7 +36,7 @@ std::filesystem::path get_executable_directory() {
     return execpath.parent_path();
 }
 #else   // _WIN32
-std::filesystem::path get_executable_directory() {
+static std::filesystem::path get_executable_directory() {
     std::error_code ec;
     std::filesystem::path filepath = std::filesystem::read_symlink("/proc/self/exe", ec);
 

src/libplacebo_filter.cpp

@@ -42,8 +42,9 @@ int LibplaceboFilter::init(AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, AVB
         shader_full_path = shader_path;
     } else {
         // Construct the fallback path using std::filesystem
-        shader_full_path =
-            find_resource_file(std::filesystem::path("models") / (shader_path.string() + ".glsl"));
+        shader_full_path = find_resource_file(
+            std::filesystem::path("models") / "libplacebo" / (shader_path.string() + ".glsl")
+        );
     }
 
     // Check if the shader file exists
@@ -56,7 +57,8 @@ int LibplaceboFilter::init(AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, AVB
     in_time_base = dec_ctx->time_base;
     out_time_base = enc_ctx->time_base;
 
-    return init_libplacebo(
+    // Initialize the libplacebo filter
+    int ret = init_libplacebo(
         hw_ctx,
         &filter_graph,
         &buffersrc_ctx,
@@ -66,6 +68,14 @@ int LibplaceboFilter::init(AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, AVB
         out_height,
         shader_full_path
     );
+
+    // Set these resources to nullptr since they are already freed by `avfilter_graph_free`
+    if (ret < 0) {
+        buffersrc_ctx = nullptr;
+        buffersink_ctx = nullptr;
+        filter_graph = nullptr;
+    }
+    return ret;
 }
 
 int LibplaceboFilter::process_frame(AVFrame *in_frame, AVFrame **out_frame) {

src/libvideo2x.cpp

@@ -3,7 +3,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <cstdint>
 #include <thread>
 
 #include <spdlog/spdlog.h>
@@ -30,7 +29,7 @@
  * @param[in] benchmark Flag to enable benchmarking mode
  * @return int 0 on success, negative value on error
  */
-int process_frames(
+static int process_frames(
     EncoderConfig *encoder_config,
     VideoProcessingContext *proc_ctx,
     AVFormatContext *ifmt_ctx,
@@ -54,7 +53,7 @@ int process_frames(
         spdlog::error("Failed to open video file with OpenCV");
         return -1;
     }
-    proc_ctx->total_frames = cap.get(cv::CAP_PROP_FRAME_COUNT);
+    proc_ctx->total_frames = static_cast<int64_t>(cap.get(cv::CAP_PROP_FRAME_COUNT));
     cap.release();
 
     // Check if the total number of frames is still 0
@@ -208,7 +207,7 @@ end:
 }
 
 // Cleanup resources after processing the video
-void cleanup(
+static void cleanup(
     AVFormatContext *ifmt_ctx,
     AVFormatContext *ofmt_ctx,
     AVCodecContext *dec_ctx,
@@ -219,27 +218,35 @@ void cleanup(
 ) {
     if (ifmt_ctx) {
         avformat_close_input(&ifmt_ctx);
+        ifmt_ctx = nullptr;
     }
     if (ofmt_ctx && !(ofmt_ctx->oformat->flags & AVFMT_NOFILE)) {
         avio_closep(&ofmt_ctx->pb);
+        ofmt_ctx->pb = nullptr;
     }
     if (ofmt_ctx) {
         avformat_free_context(ofmt_ctx);
+        ofmt_ctx = nullptr;
     }
     if (dec_ctx) {
         avcodec_free_context(&dec_ctx);
+        dec_ctx = nullptr;
     }
     if (enc_ctx) {
         avcodec_free_context(&enc_ctx);
+        enc_ctx = nullptr;
     }
     if (hw_ctx) {
         av_buffer_unref(&hw_ctx);
+        hw_ctx = nullptr;
     }
     if (stream_map) {
         av_free(stream_map);
+        stream_map = nullptr;
     }
     if (filter) {
         delete filter;
+        filter = nullptr;
     }
 }
 
@@ -343,6 +350,11 @@ extern "C" int process_video(
             // Calculate the output dimensions based on the scaling factor
             output_width = dec_ctx->width * filter_config->config.realesrgan.scaling_factor;
             output_height = dec_ctx->height * filter_config->config.realesrgan.scaling_factor;
+            break;
+        default:
+            spdlog::error("Unknown filter type");
+            cleanup(ifmt_ctx, ofmt_ctx, dec_ctx, enc_ctx, hw_ctx, stream_map, filter);
+            return -1;
     }
     spdlog::info("Output video dimensions: {}x{}", output_width, output_height);
 
@@ -431,8 +443,7 @@ extern "C" int process_video(
     // Initialize the filter
     ret = filter->init(dec_ctx, enc_ctx, hw_ctx);
     if (ret < 0) {
-        av_strerror(ret, errbuf, sizeof(errbuf));
-        spdlog::error("Failed to initialize filter: {}", errbuf);
+        spdlog::error("Failed to initialize filter");
         cleanup(ifmt_ctx, ofmt_ctx, dec_ctx, enc_ctx, hw_ctx, stream_map, filter);
         return ret;
     }

src/realesrgan_filter.cpp

@@ -32,16 +32,16 @@ RealesrganFilter::~RealesrganFilter() {
     }
 }
 
-int RealesrganFilter::init(AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, AVBufferRef *hw_ctx) {
+int RealesrganFilter::init(AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, AVBufferRef *_) {
     // Construct the model paths using std::filesystem
     std::filesystem::path model_param_path;
     std::filesystem::path model_bin_path;
 
     if (model) {
         // Find the model paths by model name if provided
-        model_param_path = std::filesystem::path("models") /
+        model_param_path = std::filesystem::path("models") / "realesrgan" /
                            (std::string(model) + "-x" + std::to_string(scaling_factor) + ".param");
-        model_bin_path = std::filesystem::path("models") /
+        model_bin_path = std::filesystem::path("models") / "realesrgan" /
                          (std::string(model) + "-x" + std::to_string(scaling_factor) + ".bin");
     } else if (!custom_model_param_path.empty() && !custom_model_bin_path.empty()) {
         // Use the custom model paths if provided
@@ -113,7 +113,7 @@ int RealesrganFilter::process_frame(AVFrame *in_frame, AVFrame **out_frame) {
     // Allocate space for ouptut ncnn::Mat
     int output_width = in_mat.w * realesrgan->scale;
     int output_height = in_mat.h * realesrgan->scale;
-    ncnn::Mat out_mat = ncnn::Mat(output_width, output_height, (size_t)3, 3);
+    ncnn::Mat out_mat = ncnn::Mat(output_width, output_height, static_cast<size_t>(3), 3);
 
     ret = realesrgan->process(in_mat, out_mat);
     if (ret != 0) {

src/video2x.c

@@ -111,7 +111,7 @@ void set_nonblocking_input(bool enable) {
     if (enable) {
         tcgetattr(STDIN_FILENO, &oldt);
         newt = oldt;
-        newt.c_lflag &= ~(ICANON | ECHO);
+        newt.c_lflag &= ~(tcflag_t)(ICANON | ECHO);
         tcsetattr(STDIN_FILENO, TCSANOW, &newt);
         fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);
     } else {
@@ -134,7 +134,9 @@ int is_valid_realesrgan_model(const char *model) {
     if (!model) {
         return 0;
     }
-    for (int i = 0; i < sizeof(valid_realesrgan_models) / sizeof(valid_realesrgan_models[0]); i++) {
+    for (unsigned long i = 0;
+         i < sizeof(valid_realesrgan_models) / sizeof(valid_realesrgan_models[0]);
+         i++) {
         if (strcmp(model, valid_realesrgan_models[i]) == 0) {
             return 1;
         }
@@ -142,12 +144,11 @@ int is_valid_realesrgan_model(const char *model) {
     return 0;
 }
 
-void print_help() {
+void print_help(void) {
     printf("Usage: video2x [OPTIONS]\n");
     printf("\nOptions:\n");
-    printf(
-        "  --loglevel		Set log level (trace, debug, info, warn, error, critical, none)\n"
-    );
+    printf("  --loglevel		Set log level \n");
+    printf("			(trace, debug, info, warn, error, critical, none)\n");
     printf("  --noprogress		Do not display the progress bar\n");
     printf("  -v, --version		Print program version\n");
     printf("  -?, --help		Display this help page\n");
@@ -167,7 +168,9 @@ void print_help() {
     printf("  -q, --crf		Constant Rate Factor (default: 20.0)\n");
 
     printf("\nlibplacebo Options:\n");
-    printf("  -s, --shader		Name or path to custom GLSL shader file\n");
+    printf("  -s, --shader		Name or path of the GLSL shader file to use \n");
+    printf("			(built-in: 'anime4k-a', 'anime4k-b', 'anime4k-c',\n");
+    printf("			'anime4k-a+a', 'anime4k-b+b', 'anime4k-c+a')\n");
     printf("  -w, --width		Output width\n");
     printf("  -h, --height		Output height\n");
 
@@ -177,7 +180,7 @@ void print_help() {
     printf("  -r, --scale		Scaling factor (2, 3, or 4)\n");
 
     printf("\nExamples Usage:\n");
-    printf("  video2x -i in.mp4 -o out.mp4 -f libplacebo -s anime4k-mode-a -w 3840 -h 2160\n");
+    printf("  video2x -i in.mp4 -o out.mp4 -f libplacebo -s anime4k-a+a -w 3840 -h 2160\n");
     printf("  video2x -i in.mp4 -o out.mp4 -f realesrgan -m realesr-animevideov3 -r 4\n");
 }
 
@@ -245,7 +248,7 @@ void parse_arguments(int argc, char **argv, struct arguments *arguments) {
                 }
                 break;
             case 'q':
-                arguments->crf = atof(optarg);
+                arguments->crf = (float)atof(optarg);
                 if (arguments->crf < 0.0 || arguments->crf > 51.0) {
                     fprintf(stderr, "Error: CRF must be between 0 and 51.\n");
                     exit(1);
@@ -538,7 +541,7 @@ int main(int argc, char **argv) {
                 proc_ctx.processed_frames,
                 proc_ctx.total_frames,
                 proc_ctx.total_frames > 0
-                    ? proc_ctx.processed_frames * 100.0 / proc_ctx.total_frames
+                    ? (double)proc_ctx.processed_frames * 100.0 / (double)proc_ctx.total_frames
                     : 0.0,
                 time(NULL) - proc_ctx.start_time
             );
@@ -578,7 +581,7 @@ int main(int argc, char **argv) {
     // Calculate statistics
     time_t time_elapsed = time(NULL) - proc_ctx.start_time;
     float average_speed_fps =
-        (float)proc_ctx.processed_frames / (time_elapsed > 0 ? time_elapsed : 1);
+        (float)proc_ctx.processed_frames / (time_elapsed > 0 ? (float)time_elapsed : 1);
 
     // Print processing summary
     printf("====== Video2X %s summary ======\n", arguments.benchmark ? "Benchmark" : "Processing");