Big refactor, shuffling a lot of files around

src/render.cpp

@@ -0,0 +1,96 @@
+#include "render.h"
+
+#include <cstring>
+#include <format>
+
+#ifdef _WIN32
+  #include "util.h"
+  #define POPEN _popen
+  #define PCLOSE _pclose
+  #define PWRITE_MODE "wb"
+  #define PREAD_MODE "r"
+#else
+  #define POPEN popen
+  #define PCLOSE pclose
+  #define PWRITE_MODE "w"
+  #define PREAD_MODE "r"
+#endif
+
+#include "log.h"
+
+using namespace anm2ed::resource;
+using namespace glm;
+
+namespace anm2ed
+{
+  constexpr auto FFMPEG_POPEN_ERROR = "popen() (for FFmpeg) failed!\n{}";
+
+  constexpr auto GIF_FORMAT = "\"{0}\" -y "
+                              "-f rawvideo -pix_fmt rgba -s {1}x{2} -r {3} -i pipe:0 "
+                              "-lavfi \"split[s0][s1];"
+                              "[s0]palettegen=stats_mode=full[p];"
+                              "[s1][p]paletteuse=dither=floyd_steinberg\" "
+                              "-loop 0 \"{4}\"";
+
+  constexpr auto WEBM_FORMAT = "\"{0}\" -y "
+                               "-f rawvideo -pix_fmt rgba -s {1}x{2} -r {3} -i pipe:0 "
+                               "-c:v libvpx-vp9 -crf 30 -b:v 0 -pix_fmt yuva420p -row-mt 1 -threads 0 -speed 2 "
+                               "-auto-alt-ref 0 -an \"{4}\"";
+
+  constexpr auto* MP4_FORMAT = "\"{0}\" -y "
+                               "-f rawvideo -pix_fmt rgba -s {1}x{2} -r {3} -i pipe:0 "
+                               "-vf \"format=yuv420p,scale=trunc(iw/2)*2:trunc(ih/2)*2\" "
+                               "-c:v libx265 -crf 20 -preset slow "
+                               "-tag:v hvc1 -movflags +faststart -an \"{4}\"";
+
+  bool animation_render(const std::string& ffmpegPath, const std::string& path, std::vector<Texture>& frames,
+                        render::Type type, ivec2 size, int fps)
+  {
+    if (frames.empty() || size.x <= 0 || size.y <= 0 || fps <= 0 || ffmpegPath.empty() || path.empty()) return false;
+
+    std::string command{};
+
+    switch (type)
+    {
+      case render::GIF:
+        command = std::format(GIF_FORMAT, ffmpegPath, size.x, size.y, fps, path);
+        break;
+      case render::WEBM:
+        command = std::format(WEBM_FORMAT, ffmpegPath, size.x, size.y, fps, path);
+        break;
+      case render::MP4:
+        command = std::format(MP4_FORMAT, ffmpegPath, size.x, size.y, fps, path);
+        break;
+      default:
+        break;
+    }
+
+#if _WIN32
+    command = string::quote(command);
+#endif
+
+    logger.command(command);
+
+    FILE* fp = POPEN(command.c_str(), PWRITE_MODE);
+
+    if (!fp)
+    {
+      logger.error(std::format(FFMPEG_POPEN_ERROR, strerror(errno)));
+      return false;
+    }
+
+    for (auto& frame : frames)
+    {
+      auto frameSize = frame.pixel_size_get();
+
+      if (fwrite(frame.pixels.data(), 1, frameSize, fp) != frameSize)
+      {
+        PCLOSE(fp);
+        return false;
+      }
+    }
+
+    auto code = PCLOSE(fp);
+    return (code == 0);
+  }
+}