From b57fbbe50c9b2656fad86a1a7eeabfd2b2a50935 Mon Sep 17 00:00:00 2001 From: Jonas Karlman Date: Sun, 14 Dec 2025 01:14:17 +0000 Subject: [PATCH 13/13] avutil/hwcontext_v4l2request: Add support for BROADCOM_SAND128 pix fmts Add support for NV12_COL128 and NV12_10_COL128 used by downstream Raspberry Pi HEVC decoder. Signed-off-by: Jonas Karlman --- libavutil/hwcontext_v4l2request.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) --- a/libavutil/hwcontext_v4l2request.c +++ b/libavutil/hwcontext_v4l2request.c @@ -107,6 +107,12 @@ static const struct { .bit_depth = 10, }, #endif +#if defined(V4L2_PIX_FMT_NV12_COL128) && defined(V4L2_PIX_FMT_NV12_10_COL128) + { V4L2_PIX_FMT_NV12_COL128, AV_PIX_FMT_YUV420P, DRM_FORMAT_NV12, DRM_FORMAT_MOD_BROADCOM_SAND128, 8 }, +#if defined(DRM_FORMAT_P030) + { V4L2_PIX_FMT_NV12_10_COL128, AV_PIX_FMT_YUV420P10, DRM_FORMAT_P030, DRM_FORMAT_MOD_BROADCOM_SAND128, 10 }, +#endif +#endif }; static int v4l2request_set_drm_descriptor(AVDRMFrameDescriptor *desc, @@ -169,6 +175,25 @@ static int v4l2request_set_drm_descripto } #endif +#if defined(V4L2_PIX_FMT_NV12_COL128) && defined(V4L2_PIX_FMT_NV12_10_COL128) + // Raspberry Pi formats need special handling + if (pixelformat == V4L2_PIX_FMT_NV12_COL128 || + pixelformat == V4L2_PIX_FMT_NV12_10_COL128) { + desc->objects[0].format_modifier = + DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(layer->planes[0].pitch); + layer->planes[1].offset = 128 * + (V4L2_TYPE_IS_MULTIPLANAR(format->type) ? + format->fmt.pix_mp.height : + format->fmt.pix.height); + layer->planes[0].pitch = (V4L2_TYPE_IS_MULTIPLANAR(format->type) ? + format->fmt.pix_mp.width : + format->fmt.pix.width); + if (pixelformat == V4L2_PIX_FMT_NV12_10_COL128) + layer->planes[0].pitch *= 2; + layer->planes[1].pitch = layer->planes[0].pitch; + } +#endif + return 0; }