From 256fa3920874b0f1f4cb79ad6766493a22187153 Mon Sep 17 00:00:00 2001 From: Paul Kocialkowski Date: Tue, 22 Oct 2019 12:26:52 -0300 Subject: media: v4l: Add definitions for HEVC stateless decoding This introduces the required definitions for HEVC decoding support with stateless VPUs. The controls associated to the HEVC slice format provide the required meta-data for decoding slices extracted from the bitstream. They are not exported to the public V4L2 API since reworking this API will likely be needed for covering various use-cases and new hardware. Multi-slice decoding is exposed as a valid decoding mode to match current H.264 support but it is not yet implemented. The interface comes with the following limitations: * No custom quantization matrices (scaling lists); * Support for a single temporal layer only; * No slice entry point offsets support; * No conformance window support; * No VUI parameters support; * No support for SPS extensions: range, multilayer, 3d, scc, 4 bits; * No support for PPS extensions: range, multilayer, 3d, scc, 4 bits. Signed-off-by: Paul Kocialkowski [hverkuil-cisco@xs4all.nl: use 1ULL in flags defines in hevc-ctrls.h] Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-ioctl.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c') diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 2753073cf340..d26c83d4c255 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1367,6 +1367,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; case V4L2_PIX_FMT_VP9: descr = "VP9"; break; case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ + case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; -- cgit v1.2.3