Add xmusic tracker/audio player, xfiles media actions, ringtone volume & vibration fix

src/dwm-plugins/media_utils.h

@@ -14,6 +14,8 @@
 
 #include <jpeglib.h>
 #include <png.h>
+#include <sys/wait.h>
+#include <unistd.h>
 
 namespace bananarchy {
 
@@ -159,6 +161,73 @@ inline bool loadPngRgb24(const std::string& path,
   return true;
 }
 
+inline bool loadFfmpegImageRgb24(const std::string& path,
+                                 std::vector<uint8_t>* outRgb,
+                                 int* outW,
+                                 int* outH) {
+  int pipefd[2];
+  if (::pipe(pipefd) != 0) {
+    return false;
+  }
+  pid_t pid = ::fork();
+  if (pid < 0) {
+    ::close(pipefd[0]);
+    ::close(pipefd[1]);
+    return false;
+  }
+  if (pid == 0) {
+    ::close(pipefd[0]);
+    ::dup2(pipefd[1], STDOUT_FILENO);
+    if (pipefd[1] != STDOUT_FILENO) ::close(pipefd[1]);
+    int devnull = ::open("/dev/null", O_RDWR);
+    if (devnull >= 0) {
+      ::dup2(devnull, STDIN_FILENO);
+      ::dup2(devnull, STDERR_FILENO);
+      if (devnull > 2) ::close(devnull);
+    }
+    ::execlp("ffmpeg", "ffmpeg", "-v", "error", "-i", path.c_str(),
+             "-frames:v", "1", "-f", "image2pipe", "-vcodec", "png", "-",
+             static_cast<char*>(nullptr));
+    ::_exit(127);
+  }
+  ::close(pipefd[1]);
+  std::vector<uint8_t> pngBuf;
+  uint8_t chunk[4096];
+  ssize_t n = 0;
+  while ((n = ::read(pipefd[0], chunk, sizeof(chunk))) > 0) {
+    if (pngBuf.size() + static_cast<size_t>(n) > 16 * 1024 * 1024) break;
+    pngBuf.insert(pngBuf.end(), chunk, chunk + n);
+  }
+  ::close(pipefd[0]);
+  int status = 0;
+  ::waitpid(pid, &status, 0);
+  if (pngBuf.empty()) {
+    return false;
+  }
+
+  png_image image {};
+  image.version = PNG_IMAGE_VERSION;
+  if (!png_image_begin_read_from_memory(&image, pngBuf.data(), pngBuf.size())) {
+    return false;
+  }
+  image.format = PNG_FORMAT_RGB;
+  int w = static_cast<int>(image.width);
+  int h = static_cast<int>(image.height);
+  if (w <= 0 || h <= 0 || w > 8192 || h > 8192) {
+    png_image_free(&image);
+    return false;
+  }
+  outRgb->resize(PNG_IMAGE_SIZE(image));
+  if (!png_image_finish_read(&image, nullptr, outRgb->data(), 0, nullptr)) {
+    png_image_free(&image);
+    return false;
+  }
+  png_image_free(&image);
+  *outW = w;
+  *outH = h;
+  return true;
+}
+
 inline bool loadImageRgb24(const std::string& path,
                            std::vector<uint8_t>* outRgb,
                            int* outW,
@@ -178,6 +247,9 @@ inline bool loadImageRgb24(const std::string& path,
   if (loadPngRgb24(path, outRgb, outW, outH)) {
     return true;
   }
+  if (loadFfmpegImageRgb24(path, outRgb, outW, outH)) {
+    return true;
+  }
   return false;
 }