From ffd314a245632a85ba5f310e8d86937091886d4d Mon Sep 17 00:00:00 2001
From: nathansmith <nathansmith@posteo.com>
Date: Tue, 29 Apr 2025 08:04:51 -0600
Subject: Slow adhd work

---
 src/ffmpeg.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 66 insertions(+), 4 deletions(-)

(limited to 'src/ffmpeg.c')

diff --git a/src/ffmpeg.c b/src/ffmpeg.c
index bbc94f7..37d5185 100644
--- a/src/ffmpeg.c
+++ b/src/ffmpeg.c
@@ -1,6 +1,13 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include <signal.h>
+
 #include "ffmpeg.h"
 
-FFMPEG* ffmpegStart(const char* filename, int width, int height, int fps)
+FFMPEG* ffmpegStart(const char* filename, uint32_t width, uint32_t height, uint32_t fps)
 {
     int pipefd[2];
 
@@ -67,20 +74,75 @@ FFMPEG* ffmpegStart(const char* filename, int width, int height, int fps)
         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));
+    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)
+int ffmpegSendFrame(FFMPEG* ffmpeg, void* data, uint32_t width, uint32_t height)
 {
+    for (uint32_t y = height; y > 0; --y)
+    {
+        if (write(ffmpeg->pipe, (uint32_t*)data + (y - 1) * width, sizeof(uint32_t) * width) < 0)
+        {
+            TraceLog(LOG_ERROR, "FFMPEG: failed to write into ffmpeg pipe: %s", strerror(errno));
+            return -1;
+        }
+    }
+    
     return 0;
 }
 
-int ffmpegEnd(FFMPEG* ffmpeg)
+int ffmpegEnd(FFMPEG* ffmpeg, bool cancel)
 {
+    int pipe = ffmpeg->pipe;
+    pid_t pid = ffmpeg->pid;
+
+    free(ffmpeg);
+
+    if (close(pipe) < 0)
+    {
+        TraceLog(LOG_WARNING, "FFMPEG: could not close write end of the pipe on the parent's end: %s", strerror(errno));
+    }
+
+    if (cancel)
+    {
+        kill(pid, SIGKILL);
+    }
+
+    while (true)
+    {
+        int wstatus = 0;
+        
+        if (waitpid(pid, &wstatus, 0) < 0)
+        {
+            TraceLog(LOG_ERROR, "FFMPEG: could not wait for ffmpeg child process to finish: %s", strerror(errno));
+            return -1;
+        }
+
+        if (WIFEXITED(wstatus))
+        {
+            int exit_status = WEXITSTATUS(wstatus);
+            
+            if (exit_status != 0)
+            {
+                TraceLog(LOG_ERROR, "FFMPEG: ffmpeg exited with code %d", exit_status);
+                return -1;
+            }
+
+            return 0;
+        }
+
+        if (WIFSIGNALED(wstatus))
+        {
+            TraceLog(LOG_ERROR, "FFMPEG: ffmpeg got terminated by %s", strsignal(WTERMSIG(wstatus)));
+            return -1;
+        }
+    }
+
+    assert(0 && "unreachable");
     return 0;
 }
 
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