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audio-format: add gst_audio_formats_raw()

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The existing GST_AUDIO_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 84e0689d58
commit 75411ce1e7
2 changed files with 65 additions and 0 deletions
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62
gst-libs/gst/audio/audio-format.c
View file

@ -516,3 +516,65 @@ gst_audio_format_fill_silence (const GstAudioFormatInfo * info,
}
}
}
struct RawAudioFormats
{
GstAudioFormat *formats;
guint n;
};
static gpointer
generate_raw_audio_formats (gpointer data)
{
GValue list = G_VALUE_INIT;
struct RawAudioFormats *all = g_new (struct RawAudioFormats, 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_AUDIO_FORMATS_ALL);
g_assert (gst_value_deserialize (&list, tmp));
g_free (tmp);
all->n = gst_value_list_get_size (&list);
all->formats = g_new (GstAudioFormat, all->n);
for (i = 0; i < all->n; i++) {
const GValue *v = gst_value_list_get_value (&list, i);
all->formats[i] = gst_audio_format_from_string (g_value_get_string (v));
g_assert (all->formats[i] != GST_AUDIO_FORMAT_UNKNOWN
&& all->formats[i] != GST_AUDIO_FORMAT_ENCODED);
}
g_value_unset (&list);
return all;
}
/**
* gst_audio_formats_raw:
* @len: (out): the number of elements in the returned array
*
* Return all the raw audio formats supported by GStreamer.
*
* Returns: (transfer none) (array length=len): an array of #GstAudioFormat
* Since: 1.18
*/
const GstAudioFormat *
gst_audio_formats_raw (guint * len)
{
static GOnce raw_audio_formats_once = G_ONCE_INIT;
struct RawAudioFormats *all;
g_return_val_if_fail (len, NULL);
g_once (&raw_audio_formats_once, generate_raw_audio_formats, NULL);
all = raw_audio_formats_once.retval;
*len = all->n;
return all->formats;
}

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

@ -336,6 +336,9 @@ void gst_audio_format_fill_silence (const GstAudioFormatInfo *info
"S18LE, S18BE, U18LE, U18BE, " \
"F32LE, F32BE, F64LE, F64BE }"
GST_AUDIO_API
const GstAudioFormat * gst_audio_formats_raw (guint * len);
/**
* GST_AUDIO_CAPS_MAKE:
* @format: string format that describes the sample layout, as string