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vacompositor: add helper function to choose format

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The function is based on the most supported formats by Intel/Mesa VA drivers.

Co-authored-by: Víctor Jáquez <vjaquez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5160>
This commit is contained in:
He Junyan 2023-08-08 15:34:46 +08:00 committed by GStreamer Marge Bot
parent eb4d2dd204
commit c76999fe7b
1 changed files with 54 additions and 0 deletions
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54
subprojects/gst-plugins-bad/sys/va/gstvacompositor.c
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@ -1189,6 +1189,60 @@ gst_va_compositor_fixate_src_caps (GstAggregator * agg, GstCaps * caps)
return gst_caps_fixate (ret);
}
static GstVideoFormat
_choose_format (GstVideoFormat fmt1, GstVideoFormat fmt2)
{
const GstVideoFormatInfo *info1 = gst_video_format_get_info (fmt1);
const GstVideoFormatInfo *info2 = gst_video_format_get_info (fmt2);
#define IS_KNONWN(info) (GST_VIDEO_FORMAT_INFO_FORMAT(info) != GST_VIDEO_FORMAT_UNKNOWN)
#define IS_8_BITS(info) (GST_VIDEO_FORMAT_INFO_BITS (info) == 8)
#define IS_RGB_PLANAR(info) (GST_VIDEO_FORMAT_INFO_N_PLANES (info) == 1)
#define IS_YUV_420(info) ((GST_VIDEO_FORMAT_INFO_W_SUB (info, 1) == 1) \
&& (GST_VIDEO_FORMAT_INFO_H_SUB (info, 1) == 1))
#define CHOOSE_FORMAT(cmp) \
G_STMT_START { \
if (cmp (info1) && !cmp (info2)) return fmt1; \
if (!cmp (info1) && cmp (info2)) return fmt2; \
} G_STMT_END;
/* prefer the other if one is unknown */
CHOOSE_FORMAT (IS_KNONWN);
/* Prefer non-complex format */
CHOOSE_FORMAT (!GST_VIDEO_FORMAT_INFO_IS_COMPLEX);
/* Prefer the depth of 8 */
CHOOSE_FORMAT (IS_8_BITS);
/* Prefer RGB */
CHOOSE_FORMAT (GST_VIDEO_FORMAT_INFO_IS_RGB);
if (GST_VIDEO_FORMAT_INFO_IS_RGB (info1)
&& GST_VIDEO_FORMAT_INFO_IS_RGB (info2)) {
/* Prefer packed RGB than planar. */
CHOOSE_FORMAT (IS_RGB_PLANAR);
/* Prefer RGB with alpha channel. */
CHOOSE_FORMAT (GST_VIDEO_FORMAT_INFO_HAS_ALPHA);
}
if (GST_VIDEO_FORMAT_INFO_IS_YUV (info1)
&& GST_VIDEO_FORMAT_INFO_IS_YUV (info2)) {
/* Prefer YUV 4:2:0. */
CHOOSE_FORMAT (IS_YUV_420);
}
/* Fallback */
return fmt1;
#undef IS_8_BITS
#undef IS_RGB_PLANAR
#undef IS_YUV_420
#undef CHOOSE_FORMAT
}
static gboolean
gst_va_compositor_pad_set_info_unlocked (GstVaCompositorPad * pad,
GstCaps * caps)