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video-format: add gst_video_formats_raw()

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The existing GST_VIDEO_FORMATS_ALL macro is not binding friendly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/676>
This commit is contained in:
Guillaume Desmottes 2020-05-27 15:05:37 +02:00 committed by GStreamer Merge Bot
parent 51b057ea26
commit f42e67c639
2 changed files with 65 additions and 0 deletions
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62
gst-libs/gst/video/video-format.c
View file

@ -7031,3 +7031,65 @@ gst_video_format_info_component (const GstVideoFormatInfo * info, guint plane,
for (c = i; c < GST_VIDEO_MAX_COMPONENTS; c++)
components[c] = -1;
}
struct RawVideoFormats
{
GstVideoFormat *formats;
guint n;
};
static gpointer
generate_raw_video_formats (gpointer data)
{
GValue list = G_VALUE_INIT;
struct RawVideoFormats *all = g_new (struct RawVideoFormats, 1);
gchar *tmp;
guint i;
g_value_init (&list, GST_TYPE_LIST);
/* Workaround a bug in our parser that would lead to segfaults
* when deserializing container types using static strings,
* see https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/446 */
tmp = g_strdup (GST_VIDEO_FORMATS_ALL);
g_assert (gst_value_deserialize (&list, tmp));
g_free (tmp);
all->n = gst_value_list_get_size (&list);
all->formats = g_new (GstVideoFormat, all->n);
for (i = 0; i < all->n; i++) {
const GValue *v = gst_value_list_get_value (&list, i);
all->formats[i] = gst_video_format_from_string (g_value_get_string (v));
g_assert (all->formats[i] != GST_VIDEO_FORMAT_UNKNOWN
&& all->formats[i] != GST_VIDEO_FORMAT_ENCODED);
}
g_value_unset (&list);
return all;
}
/**
* gst_video_formats_raw:
* @len: (out): the number of elements in the returned array
*
* Return all the raw video formats supported by GStreamer.
*
* Returns: (transfer none) (array length=len): an array of #GstVideoFormat
* Since: 1.18
*/
const GstVideoFormat *
gst_video_formats_raw (guint * len)
{
static GOnce raw_video_formats_once = G_ONCE_INIT;
struct RawVideoFormats *all;
g_return_val_if_fail (len, NULL);
g_once (&raw_video_formats_once, generate_raw_video_formats, NULL);
all = raw_video_formats_once.retval;
*len = all->n;
return all->formats;
}

3
gst-libs/gst/video/video-format.h
View file

@ -590,6 +590,9 @@ gconstpointer gst_video_format_get_palette (GstVideoFormat format, gsi
"Y412_BE, Y412_LE, Y444_12BE, Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32, NV12_10LE40, " \
"Y444_16BE, Y444_16LE, P016_BE, P016_LE }"
GST_VIDEO_API
const GstVideoFormat * gst_video_formats_raw (guint * len);
/**
* GST_VIDEO_CAPS_MAKE:
* @format: string format that describes the pixel layout, as string