diff options
| author | Jackson Lee <jackson.lee@chipsnmedia.com> | 2026-03-24 14:03:58 +0900 |
|---|---|---|
| committer | Hans Verkuil <hverkuil+cisco@kernel.org> | 2026-05-04 08:35:14 +0200 |
| commit | ffa7cb083c134042e2125cf37f488b407573607f (patch) | |
| tree | 6d408a3d72e47e8e864aafc2a38cb0ea167019d9 /drivers | |
| parent | 5d801b59633f6af60bb0e18d3bbb18b7b040a6d9 (diff) | |
media: chips-media: wave5: Add support for background detection
Implement V4L2_CID_MPEG_VIDEO_BACKGROUND_DETECTION in the Wave5 encoder
driver. When enabled, the hardware detects background regions in a frame
and uses fewer bits or skip mode to encode them, reducing bitrate for
streams with stationary scenes.
Signed-off-by: Jackson Lee <jackson.lee@chipsnmedia.com>
Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/platform/chips-media/wave5/wave5-hw.c | 4 | ||||
| -rw-r--r-- | drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c | 7 | ||||
| -rw-r--r-- | drivers/media/platform/chips-media/wave5/wave5-vpuapi.h | 1 |
3 files changed, 11 insertions, 1 deletions
diff --git a/drivers/media/platform/chips-media/wave5/wave5-hw.c b/drivers/media/platform/chips-media/wave5/wave5-hw.c index 687ce6ccf3ae..c516d125f553 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-hw.c +++ b/drivers/media/platform/chips-media/wave5/wave5-hw.c @@ -49,6 +49,7 @@ #define FASTIO_ADDRESS_MASK GENMASK(15, 0) #define SEQ_PARAM_PROFILE_MASK GENMASK(30, 24) +#define SEQ_BG_PARAM_REG_DATA 0x3800410 static void _wave5_print_reg_err(struct vpu_device *vpu_dev, u32 reg_fail_reason, const char *func); @@ -1838,7 +1839,8 @@ int wave5_vpu_enc_init_seq(struct vpu_instance *inst) vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_RC_BIT_RATIO_LAYER_4_7, 0); vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_ROT_PARAM, rot_mir_mode); - vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_BG_PARAM, 0); + vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_BG_PARAM, + SEQ_BG_PARAM_REG_DATA | p_param->bg_detection); vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_CUSTOM_LAMBDA_ADDR, 0); vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_CONF_WIN_TOP_BOT, p_param->conf_win_bot << 16 | p_param->conf_win_top); diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c index c605a91718d8..e806973305ce 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c @@ -759,6 +759,9 @@ static int wave5_vpu_enc_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_MPEG_VIDEO_BITRATE: inst->bit_rate = ctrl->val; break; + case V4L2_CID_MPEG_VIDEO_BACKGROUND_DETECTION: + inst->enc_param.bg_detection = ctrl->val; + break; case V4L2_CID_MPEG_VIDEO_GOP_SIZE: inst->enc_param.avc_idr_period = ctrl->val; break; @@ -1184,6 +1187,7 @@ static int wave5_set_enc_openparam(struct enc_open_param *open_param, open_param->wave_param.beta_offset_div2 = input.beta_offset_div2; open_param->wave_param.decoding_refresh_type = input.decoding_refresh_type; open_param->wave_param.intra_period = input.intra_period; + open_param->wave_param.bg_detection = input.bg_detection; if (inst->std == W_HEVC_ENC) { if (input.intra_period == 0) { open_param->wave_param.decoding_refresh_type = DEC_REFRESH_TYPE_IDR; @@ -1680,6 +1684,9 @@ static int wave5_vpu_open_enc(struct file *filp) V4L2_CID_MPEG_VIDEO_AU_DELIMITER, 0, 1, 1, 1); v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, + V4L2_CID_MPEG_VIDEO_BACKGROUND_DETECTION, + 0, 1, 1, 0); + v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops, diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h index c64135769869..dc31689e0d27 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h @@ -570,6 +570,7 @@ struct enc_wave_param { u32 transform8x8_enable: 1; /* enable 8x8 intra prediction and 8x8 transform */ u32 mb_level_rc_enable: 1; /* enable MB-level rate control */ u32 forced_idr_header_enable: 1; /* enable header encoding before IDR frame */ + u32 bg_detection: 1; /* enable background detection */ }; struct enc_open_param { |