diff options
| author | Stanimir Varbanov <stanimir.varbanov@linaro.org> | 2017-12-01 10:08:01 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-12-08 10:38:08 -0500 |
| commit | 8fc58186bb41ff8789ad9e993c03a23d67698709 (patch) | |
| tree | 7e98837dca066f550713b376cea16d953605235e /drivers/media/platform/qcom/venus/venc_ctrls.c | |
| parent | fdda01090cc22312d83cba78def3668ec7ac6715 (diff) | |
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 <stanimir.varbanov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: fixed two small checkpatch comments]
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/qcom/venus/venc_ctrls.c')
| -rw-r--r-- | drivers/media/platform/qcom/venus/venc_ctrls.c | 59 |
1 files changed, 58 insertions, 1 deletions
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; |