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(unknown [IPv6:2a01:e0a:120:3210:3cab:61a1:2b1f:896b]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id 5ACD96601A00; Fri, 8 Jul 2022 17:22:23 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1657297343; bh=t0/p61VK/C1WwG7QkqZyOBt3zUn1k4DeYvoEkoPfpvQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bjJ7kGqqqe5Yk5U88RD1IGjppSp6CIDCPVr+I7jOEqXkbqJwIK31vcureOeXdes+k FtCJysWc0ruQn+l+JbLLpQ4z/QTVYGXk4FIuHM/W+CqMSWVkKvEnaxS/Y1Etc8R+aM J1Q8B7rDVH7ItLBDyxEFfyHeSqWtw7dq2KErN9cjZIuWHYdNumDAbseb4zIi+V+JfB cpqxsWDnkT6lFMDZmUUARGFd0wL5ZiLTidRhc7ZdutSd/LapkrbkA+CCDfTE8AJr8Z v+sVSUe5TNOQm75q7lvo0rPL2ypNORXTSYQWOVZl5QGKw9uIrIzhGkf/eaMVRKg3wC s60b/lmT4bQww== From: Benjamin Gaignard To: mchehab@kernel.org, hverkuil@xs4all.nl, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, gregkh@linuxfoundation.org, mripard@kernel.org, paul.kocialkowski@bootlin.com, wens@csie.org, jernej.skrabec@gmail.com, samuel@sholland.org, nicolas.dufresne@collabora.com, andrzej.p@collabora.com Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH v13 16/17] media: uapi: Change data_bit_offset definition Date: Fri, 8 Jul 2022 18:21:55 +0200 Message-Id: <20220708162156.815772-17-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220708162156.815772-1-benjamin.gaignard@collabora.com> References: <20220708162156.815772-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220708_172243_325540_71C514B1 X-CRM114-Status: GOOD ( 17.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 'F.7.3.6.1 General slice segment header syntax' section of HEVC specification describes that a slice header always end aligned on byte boundary, therefore we only need to provide the data offset in bytes. Signed-off-by: Benjamin Gaignard Reviewed-by: Ezequiel Garcia Acked-by: Nicolas Dufresne Tested-by: Jernej Skrabec --- .../media/v4l/ext-ctrls-codec.rst | 4 ++-- .../staging/media/sunxi/cedrus/cedrus_h265.c | 19 ++++++++++++++++++- .../staging/media/sunxi/cedrus/cedrus_video.c | 1 - include/media/hevc-ctrls.h | 4 ++-- 4 files changed, 22 insertions(+), 6 deletions(-) diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index 73b347acb704..6cf68588af1b 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -3008,8 +3008,8 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - - ``bit_size`` - Size (in bits) of the current slice data. * - __u32 - - ``data_bit_offset`` - - Offset (in bits) to the video data in the current slice data. + - ``data_byte_offset`` + - Offset (in bytes) to the video data in the current slice data. * - __u32 - ``num_entry_point_offsets`` - Specifies the number of entry point offset syntax elements in the slice header. diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c index 411601975124..7b67cb4621cf 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c @@ -317,6 +317,8 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx, u32 chroma_log2_weight_denom; u32 output_pic_list_index; u32 pic_order_cnt[2]; + u8 *padding; + int count; u32 reg; sps = run->h265.sps; @@ -405,7 +407,22 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx, /* Initialize bitstream access. */ cedrus_write(dev, VE_DEC_H265_TRIGGER, VE_DEC_H265_TRIGGER_INIT_SWDEC); - cedrus_h265_skip_bits(dev, slice_params->data_bit_offset); + /* + * Cedrus expects that bitstream pointer is actually at the end of the slice header + * instead of start of slice data. Padding is 8 bits at most (one bit set to 1 and + * at most seven bits set to 0), so we have to inspect only one byte before slice data. + */ + padding = (u8 *)vb2_plane_vaddr(&run->src->vb2_buf, 0) + + slice_params->data_byte_offset - 1; + + for (count = 0; count < 8; count++) + if (*padding & (1 << count)) + break; + + /* Include the one bit. */ + count++; + + cedrus_h265_skip_bits(dev, slice_params->data_byte_offset * 8 - count); /* Bitstream parameters. */ diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c b/drivers/staging/media/sunxi/cedrus/cedrus_video.c index 33726175d980..66714609b577 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c @@ -568,7 +568,6 @@ int cedrus_queue_init(void *priv, struct vb2_queue *src_vq, src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; src_vq->io_modes = VB2_MMAP | VB2_DMABUF; - src_vq->dma_attrs = DMA_ATTR_NO_KERNEL_MAPPING; src_vq->drv_priv = ctx; src_vq->buf_struct_size = sizeof(struct cedrus_buffer); src_vq->ops = &cedrus_qops; diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h index 7358cbfc3e4d..c89029b3c5da 100644 --- a/include/media/hevc-ctrls.h +++ b/include/media/hevc-ctrls.h @@ -310,7 +310,7 @@ struct v4l2_hevc_pred_weight_table { * V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it. * * @bit_size: size (in bits) of the current slice data - * @data_bit_offset: offset (in bits) to the video data in the current slice data + * @data_byte_offset: offset (in bytes) to the video data in the current slice data * @num_entry_point_offsets: specifies the number of entry point offset syntax * elements in the slice header. * @nal_unit_type: specifies the coding type of the slice (B, P or I) @@ -356,7 +356,7 @@ struct v4l2_hevc_pred_weight_table { */ struct v4l2_ctrl_hevc_slice_params { __u32 bit_size; - __u32 data_bit_offset; + __u32 data_byte_offset; __u32 num_entry_point_offsets; /* ISO/IEC 23008-2, ITU-T Rec. H.265: NAL unit header */ __u8 nal_unit_type; -- 2.32.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel