From patchwork Mon May 7 12:44:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10384019 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D358260318 for ; Mon, 7 May 2018 12:47:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CF6961FF60 for ; Mon, 7 May 2018 12:47:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C2D47200DF; Mon, 7 May 2018 12:47:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3412B1FFDB for ; Mon, 7 May 2018 12:47:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752504AbeEGMrv (ORCPT ); Mon, 7 May 2018 08:47:51 -0400 Received: from mail.bootlin.com ([62.4.15.54]:50892 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752395AbeEGMrh (ORCPT ); Mon, 7 May 2018 08:47:37 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id DB863207BB; Mon, 7 May 2018 14:47:33 +0200 (CEST) Received: from localhost.localdomain (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.bootlin.com (Postfix) with ESMTPSA id 33C2F203B7; Mon, 7 May 2018 14:47:33 +0200 (CEST) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Mauro Carvalho Chehab , Rob Herring , Mark Rutland , Maxime Ripard , Chen-Yu Tsai , Paul Kocialkowski , Greg Kroah-Hartman , "David S . Miller" , Andrew Morton , Linus Walleij , Randy Dunlap , Hans Verkuil , Arnd Bergmann , Stanimir Varbanov , Sakari Ailus , Philipp Zabel , Ramesh Shanmugasundaram , Yannick Fertre , Thomas Gleixner , Hugues Fruchet , Alexandre Courbot , Florent Revest , Tomasz Figa , Ricardo Ribalda Delgado , Smitha T Murthy , Andy Shevchenko , Sylwester Nawrocki , Randy Li Subject: [PATCH v3 08/14] media: v4l: Add definitions for MPEG2 frame format and header metadata Date: Mon, 7 May 2018 14:44:54 +0200 Message-Id: <20180507124500.20434-9-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180507124500.20434-1-paul.kocialkowski@bootlin.com> References: <20180507124500.20434-1-paul.kocialkowski@bootlin.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Florent Revest Stateless video decoding engines require both the MPEG slices and associated metadata from the video stream in order to decode frames. This introduces definitions for a new pixel format, describing buffers with MPEG2 slice data, as well as a control structure for passing the frame header (metadata) to drivers. Signed-off-by: Florent Revest Signed-off-by: Paul Kocialkowski --- drivers/media/v4l2-core/v4l2-ctrls.c | 10 ++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/v4l2-controls.h | 26 ++++++++++++++++++++++++++ include/uapi/linux/videodev2.h | 3 +++ 4 files changed, 40 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index df58a23eb731..cdf860c8e3d8 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -826,6 +826,7 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: return "Vertical MV Search Range"; case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header"; case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key Frame"; + case V4L2_CID_MPEG_VIDEO_MPEG2_FRAME_HDR: return "MPEG2 Frame Header"; /* VPX controls */ case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: return "VPX Number of Partitions"; @@ -1271,6 +1272,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_RDS_TX_ALT_FREQS: *type = V4L2_CTRL_TYPE_U32; break; + case V4L2_CID_MPEG_VIDEO_MPEG2_FRAME_HDR: + *type = V4L2_CTRL_TYPE_MPEG2_FRAME_HDR; + break; default: *type = V4L2_CTRL_TYPE_INTEGER; break; @@ -1591,6 +1595,9 @@ static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx, return -ERANGE; return 0; + case V4L2_CTRL_TYPE_MPEG2_FRAME_HDR: + return 0; + default: return -EINVAL; } @@ -2165,6 +2172,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, case V4L2_CTRL_TYPE_U32: elem_size = sizeof(u32); break; + case V4L2_CTRL_TYPE_MPEG2_FRAME_HDR: + elem_size = sizeof(struct v4l2_ctrl_mpeg2_frame_hdr); + break; default: if (type < V4L2_CTRL_COMPOUND_TYPES) elem_size = sizeof(s32); diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 561a1fe3160b..38d318c47c55 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1274,6 +1274,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_VP8: descr = "VP8"; break; case V4L2_PIX_FMT_VP9: descr = "VP9"; break; case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ + case V4L2_PIX_FMT_MPEG2_FRAME: descr = "MPEG2 Frame"; break; case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index 8d473c979b61..23da8bfa7e6f 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -557,6 +557,8 @@ enum v4l2_mpeg_video_mpeg4_profile { }; #define V4L2_CID_MPEG_VIDEO_MPEG4_QPEL (V4L2_CID_MPEG_BASE+407) +#define V4L2_CID_MPEG_VIDEO_MPEG2_FRAME_HDR (V4L2_CID_MPEG_BASE+450) + /* Control IDs for VP8 streams * Although VP8 is not part of MPEG we add these controls to the MPEG class * as that class is already handling other video compression standards @@ -1076,4 +1078,28 @@ enum v4l2_detect_md_mode { #define V4L2_CID_DETECT_MD_THRESHOLD_GRID (V4L2_CID_DETECT_CLASS_BASE + 3) #define V4L2_CID_DETECT_MD_REGION_GRID (V4L2_CID_DETECT_CLASS_BASE + 4) +struct v4l2_ctrl_mpeg2_frame_hdr { + __u32 slice_len; + __u32 slice_pos; + enum { MPEG1, MPEG2 } type; + + __u16 width; + __u16 height; + + enum { PCT_I = 1, PCT_P, PCT_B, PCT_D } picture_coding_type; + __u8 f_code[2][2]; + + __u8 intra_dc_precision; + __u8 picture_structure; + __u8 top_field_first; + __u8 frame_pred_frame_dct; + __u8 concealment_motion_vectors; + __u8 q_scale_type; + __u8 intra_vlc_format; + __u8 alternate_scan; + + __u8 backward_ref_index; + __u8 forward_ref_index; +}; + #endif diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 1f6c4b52baae..d8f9b59d90d7 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -636,6 +636,7 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_VP8 v4l2_fourcc('V', 'P', '8', '0') /* VP8 */ #define V4L2_PIX_FMT_VP9 v4l2_fourcc('V', 'P', '9', '0') /* VP9 */ #define V4L2_PIX_FMT_HEVC v4l2_fourcc('H', 'E', 'V', 'C') /* HEVC aka H.265 */ +#define V4L2_PIX_FMT_MPEG2_FRAME v4l2_fourcc('M', 'G', '2', 'F') /* MPEG2 frame */ /* Vendor-specific formats */ #define V4L2_PIX_FMT_CPIA1 v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */ @@ -1587,6 +1588,7 @@ struct v4l2_ext_control { __u8 __user *p_u8; __u16 __user *p_u16; __u32 __user *p_u32; + struct v4l2_ctrl_mpeg2_frame_hdr __user *p_mpeg2_frame_hdr; void __user *ptr; }; } __attribute__ ((packed)); @@ -1632,6 +1634,7 @@ enum v4l2_ctrl_type { V4L2_CTRL_TYPE_U8 = 0x0100, V4L2_CTRL_TYPE_U16 = 0x0101, V4L2_CTRL_TYPE_U32 = 0x0102, + V4L2_CTRL_TYPE_MPEG2_FRAME_HDR = 0x0109, }; /* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */