From 316d9e84a72069e04e483de0d5934c1d75f6a44c Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 27 Jan 2014 11:16:05 -0300 Subject: [PATCH] [media] solo6x10: implement the motion detection event Use the new motion detection event. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- .../media/solo6x10/solo6x10-v4l2-enc.c | 68 ++++++++++++++++--- drivers/staging/media/solo6x10/solo6x10.h | 7 +- 2 files changed, 60 insertions(+), 15 deletions(-) diff --git a/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c b/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c index f7ec94c39314..6078aeb4ce07 100644 --- a/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c +++ b/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c @@ -243,6 +243,8 @@ static int solo_enc_on(struct solo_enc_dev *solo_enc) if (solo_enc->bw_weight > solo_dev->enc_bw_remain) return -EBUSY; solo_enc->sequence = 0; + solo_enc->motion_last_state = false; + solo_enc->frames_since_last_motion = 0; solo_dev->enc_bw_remain -= solo_enc->bw_weight; if (solo_enc->type == SOLO_ENC_TYPE_EXT) @@ -544,15 +546,6 @@ static int solo_enc_fillbuf(struct solo_enc_dev *solo_enc, const vop_header *vh = enc_buf->vh; int ret; - /* Check for motion flags */ - vb->v4l2_buf.flags &= ~(V4L2_BUF_FLAG_MOTION_ON | - V4L2_BUF_FLAG_MOTION_DETECTED); - if (solo_is_motion_on(solo_enc)) { - vb->v4l2_buf.flags |= V4L2_BUF_FLAG_MOTION_ON; - if (enc_buf->motion) - vb->v4l2_buf.flags |= V4L2_BUF_FLAG_MOTION_DETECTED; - } - switch (solo_enc->fmt) { case V4L2_PIX_FMT_MPEG4: case V4L2_PIX_FMT_H264: @@ -564,9 +557,49 @@ static int solo_enc_fillbuf(struct solo_enc_dev *solo_enc, } if (!ret) { + bool send_event = false; + vb->v4l2_buf.sequence = solo_enc->sequence++; vb->v4l2_buf.timestamp.tv_sec = vop_sec(vh); vb->v4l2_buf.timestamp.tv_usec = vop_usec(vh); + + /* Check for motion flags */ + if (solo_is_motion_on(solo_enc)) { + /* It takes a few frames for the hardware to detect + * motion. Once it does it clears the motion detection + * register and it takes again a few frames before + * motion is seen. This means in practice that when the + * motion field is 1, it will go back to 0 for the next + * frame. This leads to motion detection event being + * sent all the time, which is not what we want. + * Instead wait a few frames before deciding that the + * motion has halted. After some experimentation it + * turns out that waiting for 5 frames works well. + */ + if (enc_buf->motion == 0 && + solo_enc->motion_last_state && + solo_enc->frames_since_last_motion++ > 5) + send_event = true; + else if (enc_buf->motion) { + solo_enc->frames_since_last_motion = 0; + send_event = !solo_enc->motion_last_state; + } + } + + if (send_event) { + struct v4l2_event ev = { + .type = V4L2_EVENT_MOTION_DET, + .u.motion_det = { + .flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ, + .frame_sequence = vb->v4l2_buf.sequence, + .region_mask = enc_buf->motion ? 1 : 0, + }, + }; + + solo_enc->motion_last_state = enc_buf->motion; + solo_enc->frames_since_last_motion = 0; + v4l2_event_queue(solo_enc->vfd, &ev); + } } vb2_buffer_done(vb, ret ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); @@ -1121,6 +1154,21 @@ static int solo_s_ctrl(struct v4l2_ctrl *ctrl) return 0; } +static int solo_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + + switch (sub->type) { + case V4L2_EVENT_CTRL: + return v4l2_ctrl_subscribe_event(fh, sub); + case V4L2_EVENT_MOTION_DET: + /* Allow for up to 30 events (1 second for NTSC) to be + * stored. */ + return v4l2_event_subscribe(fh, sub, 30, NULL); + } + return -EINVAL; +} + static const struct v4l2_file_operations solo_enc_fops = { .owner = THIS_MODULE, .open = v4l2_fh_open, @@ -1159,7 +1207,7 @@ static const struct v4l2_ioctl_ops solo_enc_ioctl_ops = { .vidioc_g_parm = solo_g_parm, /* Logging and events */ .vidioc_log_status = v4l2_ctrl_log_status, - .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_subscribe_event = solo_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; diff --git a/drivers/staging/media/solo6x10/solo6x10.h b/drivers/staging/media/solo6x10/solo6x10.h index 19cb56b8ffb9..35f948673235 100644 --- a/drivers/staging/media/solo6x10/solo6x10.h +++ b/drivers/staging/media/solo6x10/solo6x10.h @@ -96,11 +96,6 @@ #define SOLO_DEFAULT_QP 3 -#ifndef V4L2_BUF_FLAG_MOTION_ON -#define V4L2_BUF_FLAG_MOTION_ON 0x10000 -#define V4L2_BUF_FLAG_MOTION_DETECTED 0x20000 -#endif - #define SOLO_CID_CUSTOM_BASE (V4L2_CID_USER_BASE | 0xf000) #define V4L2_CID_MOTION_TRACE (SOLO_CID_CUSTOM_BASE+2) #define V4L2_CID_OSD_TEXT (SOLO_CID_CUSTOM_BASE+3) @@ -168,6 +163,8 @@ struct solo_enc_dev { u16 motion_thresh; bool motion_global; bool motion_enabled; + bool motion_last_state; + u8 frames_since_last_motion; u16 width; u16 height; -- 2.20.1