[master,kirkstone] gstreamer1.0-libav: fix errors with ffmpeg 5.x

Backport of patch already present upstream to fix issues with invalid
characters for GLIB when combining gstreamer1.0-libav with ffmpeg 5.x.

Remove when gstreamer1.0-libav is upgraded to 1.21.1 or above

Signed-off-by: Claus Stovgaard <claus.stovgaard@gmail.com>
---
 ...r-APNG-encoder-property-registration.patch | 82 +++++++++++++++++++
 .../gstreamer/gstreamer1.0-libav_1.20.3.bb    |  4 +-
 2 files changed, 85 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-multimedia/gstreamer/gstreamer1.0-libav/0001-libav-Fix-for-APNG-encoder-property-registration.patch

The patches need your Signed-off-by: alongside the Upstream-Status.

Thanks,
Ross

> On 21 Oct 2022, at 14:16, Claus Stovgaard via lists.openembedded.org <claus.stovgaard=gmail.com@lists.openembedded.org> wrote:
> 
> Backport of patch already present upstream to fix issues with invalid
> characters for GLIB when combining gstreamer1.0-libav with ffmpeg 5.x.
> 
> Remove when gstreamer1.0-libav is upgraded to 1.21.1 or above
> 
> Signed-off-by: Claus Stovgaard <claus.stovgaard@gmail.com>
> ---
> ...r-APNG-encoder-property-registration.patch | 82 +++++++++++++++++++
> .../gstreamer/gstreamer1.0-libav_1.20.3.bb    |  4 +-
> 2 files changed, 85 insertions(+), 1 deletion(-)
> create mode 100644 meta/recipes-multimedia/gstreamer/gstreamer1.0-libav/0001-libav-Fix-for-APNG-encoder-property-registration.patch
> 
> diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0-libav/0001-libav-Fix-for-APNG-encoder-property-registration.patch b/meta/recipes-multimedia/gstreamer/gstreamer1.0-libav/0001-libav-Fix-for-APNG-encoder-property-registration.patch
> new file mode 100644
> index 0000000000..bfb33a19d8
> --- /dev/null
> +++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0-libav/0001-libav-Fix-for-APNG-encoder-property-registration.patch
> @@ -0,0 +1,82 @@
> +From 78a97c1ec35ada76d83fc67d0549ba56c74d8875 Mon Sep 17 00:00:00 2001
> +From: Seungha Yang <seungha@centricular.com>
> +Date: Thu, 7 Jul 2022 22:16:30 +0900
> +Subject: [PATCH] libav: Fix for APNG encoder property registration
> +
> +The AVClass name of Animated PNG in FFmpeg 5.x is "(A)PNG"
> +and it will be converted to "-a-png" through
> +g_ascii_strdown() and g_strcanon(). But GLib disallow leading '-'
> +character for a GType name. Strip leading '-' to workaround it.
> +
> +Upstream-Status: Backport [https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2724]
> +---
> + ext/libav/gstavcfg.c | 29 +++++++++++++++++++++++------
> + 1 file changed, 23 insertions(+), 6 deletions(-)
> +
> +diff --git a/ext/libav/gstavcfg.c b/ext/libav/gstavcfg.c
> +index c736920..a8635a7 100644
> +--- a/ext/libav/gstavcfg.c
> ++++ b/ext/libav/gstavcfg.c
> +@@ -91,10 +91,19 @@ register_enum (const AVClass ** obj, const AVOption * top_opt)
> +   gchar *lower_obj_name = g_ascii_strdown ((*obj)->class_name, -1);
> +   gchar *enum_name = g_strdup_printf ("%s-%s", lower_obj_name, top_opt->unit);
> +   gboolean none_default = TRUE;
> ++  const gchar *enum_name_strip;
> + 
> +   g_strcanon (enum_name, G_CSET_a_2_z G_CSET_DIGITS, '-');
> + 
> +-  if ((res = g_type_from_name (enum_name)))
> ++  /* strip leading '-'s */
> ++  enum_name_strip = enum_name;
> ++  while (enum_name_strip[0] == '-')
> ++    enum_name_strip++;
> ++
> ++  if (enum_name_strip[0] == '\0')
> ++    goto done;
> ++
> ++  if ((res = g_type_from_name (enum_name_strip)))
> +     goto done;
> + 
> +   while ((opt = av_opt_next (obj, opt))) {
> +@@ -150,9 +159,8 @@ register_enum (const AVClass ** obj, const AVOption * top_opt)
> +       }
> +     }
> + 
> +-    res =
> +-        g_enum_register_static (enum_name, &g_array_index (values, GEnumValue,
> +-            0));
> ++    res = g_enum_register_static (enum_name_strip,
> ++        &g_array_index (values, GEnumValue, 0));
> + 
> +     gst_type_mark_as_plugin_api (res, 0);
> +   }
> +@@ -177,10 +185,19 @@ register_flags (const AVClass ** obj, const AVOption * top_opt)
> +   GArray *values = g_array_new (TRUE, TRUE, sizeof (GEnumValue));
> +   gchar *lower_obj_name = g_ascii_strdown ((*obj)->class_name, -1);
> +   gchar *flags_name = g_strdup_printf ("%s-%s", lower_obj_name, top_opt->unit);
> ++  const gchar *flags_name_strip;
> + 
> +   g_strcanon (flags_name, G_CSET_a_2_z G_CSET_DIGITS, '-');
> + 
> +-  if ((res = g_type_from_name (flags_name)))
> ++  /* strip leading '-'s */
> ++  flags_name_strip = flags_name;
> ++  while (flags_name_strip[0] == '-')
> ++    flags_name_strip++;
> ++
> ++  if (flags_name_strip[0] == '\0')
> ++    goto done;
> ++
> ++  if ((res = g_type_from_name (flags_name_strip)))
> +     goto done;
> + 
> +   while ((opt = av_opt_next (obj, opt))) {
> +@@ -211,7 +228,7 @@ register_flags (const AVClass ** obj, const AVOption * top_opt)
> +     g_array_sort (values, (GCompareFunc) cmp_flags_value);
> + 
> +     res =
> +-        g_flags_register_static (flags_name, &g_array_index (values,
> ++        g_flags_register_static (flags_name_strip, &g_array_index (values,
> +             GFlagsValue, 0));
> + 
> +     gst_type_mark_as_plugin_api (res, 0);
> diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0-libav_1.20.3.bb b/meta/recipes-multimedia/gstreamer/gstreamer1.0-libav_1.20.3.bb
> index e8da49af99..7a2c0d1365 100644
> --- a/meta/recipes-multimedia/gstreamer/gstreamer1.0-libav_1.20.3.bb
> +++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0-libav_1.20.3.bb
> @@ -11,7 +11,9 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=69333daa044cb77e486cc36129f7a770 \
>                     file://ext/libav/gstav.h;beginline=1;endline=18;md5=a752c35267d8276fd9ca3db6994fca9c \
>                     "
> 
> -SRC_URI = "https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-${PV}.tar.xz"
> +SRC_URI = "https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-${PV}.tar.xz \
> +           file://0001-libav-Fix-for-APNG-encoder-property-registration.patch \
> +           "
> SRC_URI[sha256sum] = "3fedd10560fcdfaa1b6462cbf79a38c4e7b57d7f390359393fc0cef6dbf27dfe"
> 
> S = "${WORKDIR}/gst-libav-${PV}"
> -- 
> 2.25.1
> 
> 
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>

On Fri, 2022-10-21 at 15:30 +0000, Ross Burton wrote:
> The patches need your Signed-off-by: alongside the Upstream-Status.
> 
> Thanks,
> Ross
> 
> 
> 
Thanks for the feedback.

Will send a version 2 shortly where I have updated the patch file with
this info.

/Claus