1 files changed, 84 insertions, 0 deletions
diff --git a/src/ffmpeg.c b/src/ffmpeg.c
index 72dfef8..bbc94f7 100644
--- a/src/ffmpeg.c
+++ b/src/ffmpeg.c
@@ -1,2 +1,86 @@
 #include "ffmpeg.h"
 
+FFMPEG* ffmpegStart(const char* filename, int width, int height, int fps)
+{
+    int pipefd[2];
+
+    if (pipe(pipefd) < 0)
+    {
+        TraceLog(LOG_ERROR, "FFMPEG: Could not create a pipe: %s", strerror(errno));
+        return NULL;
+    }
+
+    pid_t child = fork();
+    
+    if (child < 0)
+    {
+        TraceLog(LOG_ERROR, "FFMPEG: could not fork a child: %s", strerror(errno));
+        return NULL;
+    }
+
+    if (child == 0)
+    {
+        if (dup2(pipefd[READ_END], STDIN_FILENO) < 0)
+        {
+            TraceLog(LOG_ERROR, "FFMPEG CHILD: could not reopen read end of pipe as stdin: %s", strerror(errno));
+            exit(1);
+        }
+        
+        close(pipefd[WRITE_END]);
+
+        char resolution[64];
+        snprintf(resolution, sizeof(resolution), "%zux%zu", (size_t)width, (size_t)height);
+        char framerate[64];
+        snprintf(framerate, sizeof(framerate), "%zu", (size_t)fps);
+
+        int ret = execlp("ffmpeg",
+            "ffmpeg",
+            "-loglevel", "verbose",
+            "-y",
+
+            "-f", "rawvideo",
+            "-pix_fmt", "rgba",
+            "-s", resolution,
+            "-r", framerate,
+            "-i", "-",
+            "-c:v", "libx264",
+            "-vb", "2500k",
+            "-c:a", "aac",
+            "-ab", "200k",
+            "-pix_fmt", "yuv420p",
+            filename,
+            NULL
+        );
+        
+        if (ret < 0)
+        {
+            TraceLog(LOG_ERROR, "FFMPEG CHILD: could not run ffmpeg as a child process: %s", strerror(errno));
+            exit(1);
+        }
+        
+        assert(0 && "unreachable");
+        exit(1);
+    }
+
+    if (close(pipefd[READ_END]) < 0)
+    {
+        TraceLog(LOG_WARNING, "FFMPEG: could not close read end of the pipe on the parent's end: %s", strerror(errno));
+    }
+
+    FFMPEG *ffmpeg = malloc(sizeof(FFMPEG));
+    assert(ffmpeg != NULL && "Buy MORE RAM lol!!");
+    ffmpeg->pid = child;
+    ffmpeg->pipe = pipefd[WRITE_END];
+    return ffmpeg;
+}
+
+int ffmpegSendFrame(FFMPEG* ffmpeg, void* data, int widtth, int height)
+{
+    return 0;
+}
+
+int ffmpegEnd(FFMPEG* ffmpeg)
+{
+    return 0;
+}
+