Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753832AbdFLROJ (ORCPT ); Mon, 12 Jun 2017 13:14:09 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:60263 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753946AbdFLRNk (ORCPT ); Mon, 12 Jun 2017 13:13:40 -0400 From: Thierry Escande To: Andrzej Pietrasiewicz , Jacek Anaszewski , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/6] [media] s5p-jpeg: Add support for resolution change event Date: Mon, 12 Jun 2017 19:13:24 +0200 Message-Id: <1497287605-20074-6-git-send-email-thierry.escande@collabora.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1497287605-20074-1-git-send-email-thierry.escande@collabora.com> References: <1497287605-20074-1-git-send-email-thierry.escande@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset = "utf-8" Content-Transfert-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8404 Lines: 250 From: henryhsu This patch adds support for resolution change event to notify clients so they can prepare correct output buffer. When resolution change happened, G_FMT for CAPTURE should return old resolution and format before CAPTURE queues streamoff. Signed-off-by: Henry-Ruey Hsu Signed-off-by: Thierry Escande --- drivers/media/platform/s5p-jpeg/jpeg-core.c | 125 +++++++++++++++++++--------- drivers/media/platform/s5p-jpeg/jpeg-core.h | 7 ++ 2 files changed, 91 insertions(+), 41 deletions(-) diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 7ef7173..3d90a63 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -1611,8 +1612,6 @@ static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) FMT_TYPE_OUTPUT : FMT_TYPE_CAPTURE; q_data->fmt = s5p_jpeg_find_format(ct, pix->pixelformat, f_type); - q_data->w = pix->width; - q_data->h = pix->height; if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) { /* * During encoding Exynos4x12 SoCs access wider memory area @@ -1620,6 +1619,8 @@ static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) * the JPEG_IMAGE_SIZE register. In order to avoid sysmmu * page fault calculate proper buffer size in such a case. */ + q_data->w = pix->width; + q_data->h = pix->height; if (ct->jpeg->variant->hw_ex4_compat && f_type == FMT_TYPE_OUTPUT && ct->mode == S5P_JPEG_ENCODE) q_data->size = exynos4_jpeg_get_output_buffer_size(ct, @@ -1695,6 +1696,15 @@ static int s5p_jpeg_s_fmt_vid_out(struct file *file, void *priv, return s5p_jpeg_s_fmt(fh_to_ctx(priv), f); } +static int s5p_jpeg_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + if (sub->type == V4L2_EVENT_SOURCE_CHANGE) + return v4l2_src_change_event_subscribe(fh, sub); + + return -EINVAL; +} + static int exynos3250_jpeg_try_downscale(struct s5p_jpeg_ctx *ctx, struct v4l2_rect *r) { @@ -2020,6 +2030,9 @@ static const struct v4l2_ioctl_ops s5p_jpeg_ioctl_ops = { .vidioc_g_selection = s5p_jpeg_g_selection, .vidioc_s_selection = s5p_jpeg_s_selection, + + .vidioc_subscribe_event = s5p_jpeg_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; /* @@ -2412,8 +2425,17 @@ static int s5p_jpeg_job_ready(void *priv) { struct s5p_jpeg_ctx *ctx = priv; - if (ctx->mode == S5P_JPEG_DECODE) + if (ctx->mode == S5P_JPEG_DECODE) { + /* + * We have only one input buffer and one output buffer. If there + * is a resolution change event, no need to continue decoding. + */ + if (ctx->state == JPEGCTX_RESOLUTION_CHANGE) + return 0; + return ctx->hdr_parsed; + } + return 1; } @@ -2492,6 +2514,30 @@ static int s5p_jpeg_buf_prepare(struct vb2_buffer *vb) return 0; } +static void s5p_jpeg_set_capture_queue_data(struct s5p_jpeg_ctx *ctx) +{ + struct s5p_jpeg_q_data *q_data = &ctx->cap_q; + + q_data->w = ctx->out_q.w; + q_data->h = ctx->out_q.h; + + /* + * This call to jpeg_bound_align_image() takes care of width and + * height values alignment when user space calls the QBUF of + * OUTPUT buffer after the S_FMT of CAPTURE buffer. + * Please note that on Exynos4x12 SoCs, resigning from executing + * S_FMT on capture buffer for each JPEG image can result in a + * hardware hangup if subsampling is lower than the one of input + * JPEG. + */ + jpeg_bound_align_image(ctx, &q_data->w, S5P_JPEG_MIN_WIDTH, + S5P_JPEG_MAX_WIDTH, q_data->fmt->h_align, + &q_data->h, S5P_JPEG_MIN_HEIGHT, + S5P_JPEG_MAX_HEIGHT, q_data->fmt->v_align); + + q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3; +} + static void s5p_jpeg_buf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); @@ -2499,9 +2545,20 @@ static void s5p_jpeg_buf_queue(struct vb2_buffer *vb) if (ctx->mode == S5P_JPEG_DECODE && vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { - struct s5p_jpeg_q_data tmp, *q_data; - - ctx->hdr_parsed = s5p_jpeg_parse_hdr(&tmp, + static const struct v4l2_event ev_src_ch = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + struct vb2_queue *dst_vq; + u32 ori_w; + u32 ori_h; + + dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, + V4L2_BUF_TYPE_VIDEO_CAPTURE); + ori_w = ctx->out_q.w; + ori_h = ctx->out_q.h; + + ctx->hdr_parsed = s5p_jpeg_parse_hdr(&ctx->out_q, (unsigned long)vb2_plane_vaddr(vb, 0), min((unsigned long)ctx->out_q.size, vb2_get_plane_payload(vb, 0)), ctx); @@ -2510,43 +2567,18 @@ static void s5p_jpeg_buf_queue(struct vb2_buffer *vb) return; } - q_data = &ctx->out_q; - q_data->w = tmp.w; - q_data->h = tmp.h; - q_data->sos = tmp.sos; - memcpy(q_data->dht.marker, tmp.dht.marker, - sizeof(tmp.dht.marker)); - memcpy(q_data->dht.len, tmp.dht.len, sizeof(tmp.dht.len)); - q_data->dht.n = tmp.dht.n; - memcpy(q_data->dqt.marker, tmp.dqt.marker, - sizeof(tmp.dqt.marker)); - memcpy(q_data->dqt.len, tmp.dqt.len, sizeof(tmp.dqt.len)); - q_data->dqt.n = tmp.dqt.n; - q_data->sof = tmp.sof; - q_data->sof_len = tmp.sof_len; - - q_data = &ctx->cap_q; - q_data->w = tmp.w; - q_data->h = tmp.h; - /* - * This call to jpeg_bound_align_image() takes care of width and - * height values alignment when user space calls the QBUF of - * OUTPUT buffer after the S_FMT of CAPTURE buffer. - * Please note that on Exynos4x12 SoCs, resigning from executing - * S_FMT on capture buffer for each JPEG image can result in a - * hardware hangup if subsampling is lower than the one of input - * JPEG. + * If there is a resolution change event, only update capture + * queue when it is not streaming. Otherwise, update it in + * STREAMOFF. See s5p_jpeg_stop_streaming for detail. */ - jpeg_bound_align_image(ctx, - &q_data->w, - S5P_JPEG_MIN_WIDTH, S5P_JPEG_MAX_WIDTH, - q_data->fmt->h_align, - &q_data->h, - S5P_JPEG_MIN_HEIGHT, S5P_JPEG_MAX_HEIGHT, - q_data->fmt->v_align); - - q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3; + if (ctx->out_q.w != ori_w || ctx->out_q.h != ori_h) { + v4l2_event_queue_fh(&ctx->fh, &ev_src_ch); + if (vb2_is_streaming(dst_vq)) + ctx->state = JPEGCTX_RESOLUTION_CHANGE; + else + s5p_jpeg_set_capture_queue_data(ctx); + } } v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); @@ -2566,6 +2598,17 @@ static void s5p_jpeg_stop_streaming(struct vb2_queue *q) { struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q); + /* + * STREAMOFF is an acknowledgment for resolution change event. + * Before STREAMOFF, we still have to return the old resolution and + * subsampling. Update capture queue when the stream is off. + */ + if (ctx->state == JPEGCTX_RESOLUTION_CHANGE && + q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + s5p_jpeg_set_capture_queue_data(ctx); + ctx->state = JPEGCTX_RUNNING; + } + pm_runtime_put(ctx->jpeg->dev); } diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.h b/drivers/media/platform/s5p-jpeg/jpeg-core.h index 4492a35..9aa26bd 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.h +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.h @@ -98,6 +98,11 @@ enum exynos4_jpeg_img_quality_level { QUALITY_LEVEL_4, /* low */ }; +enum s5p_jpeg_ctx_state { + JPEGCTX_RUNNING = 0, + JPEGCTX_RESOLUTION_CHANGE, +}; + /** * struct s5p_jpeg - JPEG IP abstraction * @lock: the mutex protecting this structure @@ -220,6 +225,7 @@ struct s5p_jpeg_q_data { * @hdr_parsed: set if header has been parsed during decompression * @crop_altered: set if crop rectangle has been altered by the user space * @ctrl_handler: controls handler + * @state: state of the context */ struct s5p_jpeg_ctx { struct s5p_jpeg *jpeg; @@ -235,6 +241,7 @@ struct s5p_jpeg_ctx { bool hdr_parsed; bool crop_altered; struct v4l2_ctrl_handler ctrl_handler; + enum s5p_jpeg_ctx_state state; }; /** -- 2.7.4