From 8fc58186bb41ff8789ad9e993c03a23d67698709 Mon Sep 17 00:00:00 2001 From: Stanimir Varbanov Date: Fri, 1 Dec 2017 10:08:01 -0500 Subject: media: venus: venc: set correctly GOP size and number of B-frames This change fixes the calculation of B-frames and GOP size by adopt v4l2 controls with the firmware interface expectations. Signed-off-by: Stanimir Varbanov Signed-off-by: Hans Verkuil [hans.verkuil@cisco.com: fixed two small checkpatch comments] Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/qcom/venus/venc.c | 15 ++++--- drivers/media/platform/qcom/venus/venc_ctrls.c | 59 +++++++++++++++++++++++++- 2 files changed, 68 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c index 3fcf0e9b7b291..8cfc866b07e5d 100644 --- a/drivers/media/platform/qcom/venus/venc.c +++ b/drivers/media/platform/qcom/venus/venc.c @@ -652,8 +652,13 @@ static int venc_set_properties(struct venus_inst *inst) return ret; } + /* IDR periodicity, n: + * n = 0 - only the first I-frame is IDR frame + * n = 1 - all I-frames will be IDR frames + * n > 1 - every n-th I-frame will be IDR frame + */ ptype = HFI_PROPERTY_CONFIG_VENC_IDR_PERIOD; - idrp.idr_period = ctr->gop_size; + idrp.idr_period = 0; ret = hfi_session_set_property(inst, ptype, &idrp); if (ret) return ret; @@ -667,10 +672,6 @@ static int venc_set_properties(struct venus_inst *inst) return ret; } - /* intra_period = pframes + bframes + 1 */ - if (!ctr->num_p_frames) - ctr->num_p_frames = 2 * 15 - 1, - ptype = HFI_PROPERTY_CONFIG_VENC_INTRA_PERIOD; intra_period.pframes = ctr->num_p_frames; intra_period.bframes = ctr->num_b_frames; @@ -767,6 +768,10 @@ static int venc_init_session(struct venus_inst *inst) if (ret) goto deinit; + ret = venc_set_properties(inst); + if (ret) + goto deinit; + return 0; deinit: hfi_session_deinit(inst); diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c index ab0fe51ff0f7f..21e938a28662b 100644 --- a/drivers/media/platform/qcom/venus/venc_ctrls.c +++ b/drivers/media/platform/qcom/venus/venc_ctrls.c @@ -30,10 +30,57 @@ #define AT_SLICE_BOUNDARY \ V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY +static int venc_calc_bpframes(u32 gop_size, u32 conseq_b, u32 *bf, u32 *pf) +{ + u32 half = (gop_size - 1) >> 1; + u32 b, p, ratio; + bool found = false; + + if (!gop_size) + return -EINVAL; + + *bf = *pf = 0; + + if (!conseq_b) { + *pf = gop_size - 1; + return 0; + } + + b = p = half; + + for (; b <= gop_size - 1; b++, p--) { + if (b % p) + continue; + + ratio = b / p; + + if (ratio == conseq_b) { + found = true; + break; + } + + if (ratio > conseq_b) + break; + } + + if (!found) + return -EINVAL; + + if (b + p + 1 != gop_size) + return -EINVAL; + + *bf = b; + *pf = p; + + return 0; +} + static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl) { struct venus_inst *inst = ctrl_to_inst(ctrl); struct venc_controls *ctr = &inst->controls.enc; + u32 bframes; + int ret; switch (ctrl->id) { case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: @@ -102,6 +149,11 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: break; case V4L2_CID_MPEG_VIDEO_GOP_SIZE: + ret = venc_calc_bpframes(ctrl->val, ctr->num_b_frames, &bframes, + &ctr->num_p_frames); + if (ret) + return ret; + ctr->gop_size = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD: @@ -114,7 +166,12 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl) ctr->vp8_max_qp = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_B_FRAMES: - ctr->num_b_frames = ctrl->val; + ret = venc_calc_bpframes(ctr->gop_size, ctrl->val, &bframes, + &ctr->num_p_frames); + if (ret) + return ret; + + ctr->num_b_frames = bframes; break; default: return -EINVAL; -- cgit v1.2.3