[FFmpeg-devel] [PATCH] Fix fate-filter-drawvg-video in MINGW64. (PR #21030)

["Ayose C. via ffmpeg-devel" <ffmpeg-devel@ffmpeg.org>]

PR #21030 opened by Ayose C. (ayosec)
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21030
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21030.patch

This pull-request is an alternative to #21008.

The test `fate-filter-drawvg-video` is failing on Windows when `SRC_PATH` contains the character `:` ([example](https://fate.ffmpeg.org/report.cgi?time=20251126171129&slot=msys2-mingw64)).

I tried to find a way to escape the value that could work in both systems (Unix/Windows), but the way `tests/fate-run.sh` moves the command-line arguments between functions (a mix of `eval`, `$*`, and `$@`) makes very difficult to work with characters that can be interpreted by the shell (like `\` or `'`).

Instead of escaping the value, the solution implemented is to copy the `drawvg.lines` file to the `tests/data` directory (which already has temp files), so the value for `file` is a fixed string with no problematic characters.

### Testing

I'm not familiar with Windows, so I don't know if this is the correct way to test it.

1. With MSYS2 3.6.4, GCC-MINGW 15.2.

    ```console
    $ pacman -Qe
    ...
    mingw-w64-x86_64-gcc 15.2.0-8
    msys2-runtime 3.6.4-1
    ```


2. A copy of the `master` branch is in `/tmp/ffmpeg-drawvg`. FFmpeg is built in `/tmp/build0`:

    ```console
    $ gcc -dumpmachine
    x86_64-w64-mingw32

    $ mkdir /tmp/build0

    $ cd /tmp/build0

    $ E:/msys64/tmp/ffmpeg-drawvg/configure --enable-cairo --disable-x86asm
    ...
    ```

3. Before the patch in this pull-request I can reproduce [the same error](https://fate.ffmpeg.org/log.cgi?slot=msys2-mingw64&log=test&time=20251126171129#:~:text=tiltandshift%2D444%0ATEST-,filter%2Ddrawvg%2Dvideo,-%2D%2D%2D%20/d/a/FFmpeg):

    ```console
    $ make fate-filter-drawvg-video V=1
    ...

    +++ tests/data/fate/filter-drawvg-video
    @@ -1 +1 @@
    -drawvg-video        caa7642950ab2fb1367bd28c287f31bd
    +drawvg-video

    ...

    [AVFilterGraph @ 00000214b5882940] No option name near '/msys64/tmp/ffmpeg-drawvg/tests/ref/lavf/drawvg.lines'
    [AVFilterGraph @ 00000214b5882940] Error parsing a filter description around:
    [AVFilterGraph @ 00000214b5882940] Error parsing filterchain 'scale,format=bgr0,drawvg=file=E:/msys64/tmp/ffmpeg-drawvg/tests/ref/lavf/drawvg.lines' around:
    ```


4. After the patch:


    ```console
    $ make fate-filter-drawvg-video V=1
    cp /tmp/ffmpeg-drawvg/tests/ref/lavf/drawvg.lines tests/data/fate/drawvg.lines
    TEST    filter-drawvg-video
    /tmp/ffmpeg-drawvg/tests/fate-run.sh fate-filter-drawvg-video "" "" "/tmp/build0" 'video_filter scale,format=bgr0,drawvg=file=tests/data/fate/drawvg.lines' '' '' '' '1' '' '' '' '' '' '' '' '' '' ''
     /tmp/build0/ffmpeg.exe -nostdin -nostats -noauto_conversion_filters -cpuflags all -flags +bitexact -idct simple -sws_flags +accurate_rnd+bitexact -fflags +bitexact -threads 1 -f image2 -vcodec pgmyuv -hwaccel none -threads 1 -thread_type frame+slice -i /tmp/build0/tests/vsynth1/%02d.pgm -flags +bitexact -sws_flags +accurate_rnd+bitexact -fflags +bitexact -flags +bitexact -idct simple -sws_flags +accurate_rnd+bitexact -fflags +bitexact -threads 1 -dct fastint -vf scale,format=bgr0,drawvg=file=tests/data/fate/drawvg.lines -vcodec rawvideo -frames:v 5 -f nut md5:
    ```

    Without `V=1`:

    ```console
    $ make fate-filter-drawvg-{interpreter,video}
    TEST    filter-drawvg-interpreter
    TEST    filter-drawvg-video

    $ echo $?
    0
    ```



>From fbe28941af52da893257168fee3196fd83be8885 Mon Sep 17 00:00:00 2001
From: Ayose <ayosec@gmail.com>
Date: Wed, 26 Nov 2025 22:00:39 +0000
Subject: [PATCH] tests/fate-filter-drawvg-video: copy drawvg.lines file to
 tests/data.

If the SRC_PATH variable contains certain characters (like a `:`, which may
happen when FATE is executed on Windows), the value for the `file` option is
broken, so `make fate-filter-drawvg-video` always fails.

The solution in this commit is to copy the `drawvg.lines` to the `tests/data`
directory (which already has temp files), so the value for `file` is a fixed
string with no problematic characters.

Signed-off-by: Ayose <ayosec@gmail.com>
---
 tests/fate/filter-video.mak | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/fate/filter-video.mak b/tests/fate/filter-video.mak
index 3fe7f10476..087ba8d9cd 100644
--- a/tests/fate/filter-video.mak
+++ b/tests/fate/filter-video.mak
@@ -609,7 +609,10 @@ fate-filter-tiltandshift-410: CMD = framecrc -c:v pgmyuv -i $(SRC) -flags +bitex
 fate-filter-tiltandshift-422: CMD = framecrc -c:v pgmyuv -i $(SRC) -flags +bitexact -vf scale=sws_flags=+accurate_rnd+bitexact,format=yuv422p,tiltandshift
 fate-filter-tiltandshift-444: CMD = framecrc -c:v pgmyuv -i $(SRC) -flags +bitexact -vf scale=sws_flags=+accurate_rnd+bitexact,format=yuv444p,tiltandshift
 
-DRAWVG_SCRIPT_LINES = $(SRC_PATH)/tests/ref/lavf/drawvg.lines
+DRAWVG_SCRIPT_LINES = tests/data/fate/drawvg.lines
+$(DRAWVG_SCRIPT_LINES): $(SRC_PATH)/tests/ref/lavf/drawvg.lines
+	$(M)cp $< $@
+
 FATE_FILTER_VSYNTH_VIDEO_FILTER-$(CONFIG_DRAWVG_FILTER) += fate-filter-drawvg-video
 fate-filter-drawvg-video: $(DRAWVG_SCRIPT_LINES)
 fate-filter-drawvg-video: CMD = video_filter scale,format=bgr0,drawvg=file=$(DRAWVG_SCRIPT_LINES)
-- 
2.49.1

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