diff options
author | Ezequiel Garcia <ezequiel@collabora.com> | 2020-03-25 22:34:36 +0100 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-04-14 11:23:40 +0200 |
commit | 774ffd751a94eb6a5c7c6f809ea1ea7203591920 (patch) | |
tree | 25b22e7a5a3682c1694727048204e99a59cb57a6 /drivers/staging/media/hantro | |
parent | c9f98d9aeb0914c05d18d97a7aa89feb5fedb10f (diff) | |
download | linux-774ffd751a94eb6a5c7c6f809ea1ea7203591920.tar.bz2 |
media: hantro: Move H264 motion vector calculation to a helper
Move the extra bytes calculation that are needed for H264
motion vector to a helper. This is just a cosmetic cleanup.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/staging/media/hantro')
-rw-r--r-- | drivers/staging/media/hantro/hantro.h | 4 | ||||
-rw-r--r-- | drivers/staging/media/hantro/hantro_hw.h | 31 | ||||
-rw-r--r-- | drivers/staging/media/hantro/hantro_v4l2.c | 25 |
3 files changed, 33 insertions, 27 deletions
diff --git a/drivers/staging/media/hantro/hantro.h b/drivers/staging/media/hantro/hantro.h index 327ddef45345..2089f88a44a2 100644 --- a/drivers/staging/media/hantro/hantro.h +++ b/drivers/staging/media/hantro/hantro.h @@ -26,10 +26,6 @@ #include "hantro_hw.h" -#define MB_DIM 16 -#define MB_WIDTH(w) DIV_ROUND_UP(w, MB_DIM) -#define MB_HEIGHT(h) DIV_ROUND_UP(h, MB_DIM) - struct hantro_ctx; struct hantro_codec_ops; diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h index 7dfc9bad7297..4053d8710e04 100644 --- a/drivers/staging/media/hantro/hantro_hw.h +++ b/drivers/staging/media/hantro/hantro_hw.h @@ -18,6 +18,10 @@ #define DEC_8190_ALIGN_MASK 0x07U +#define MB_DIM 16 +#define MB_WIDTH(w) DIV_ROUND_UP(w, MB_DIM) +#define MB_HEIGHT(h) DIV_ROUND_UP(h, MB_DIM) + struct hantro_dev; struct hantro_ctx; struct hantro_buf; @@ -176,6 +180,33 @@ void hantro_g1_h264_dec_run(struct hantro_ctx *ctx); int hantro_h264_dec_init(struct hantro_ctx *ctx); void hantro_h264_dec_exit(struct hantro_ctx *ctx); +static inline size_t +hantro_h264_mv_size(unsigned int width, unsigned int height) +{ + /* + * A decoded 8-bit 4:2:0 NV12 frame may need memory for up to + * 448 bytes per macroblock with additional 32 bytes on + * multi-core variants. + * + * The H264 decoder needs extra space on the output buffers + * to store motion vectors. This is needed for reference + * frames and only if the format is non-post-processed NV12. + * + * Memory layout is as follow: + * + * +---------------------------+ + * | Y-plane 256 bytes x MBs | + * +---------------------------+ + * | UV-plane 128 bytes x MBs | + * +---------------------------+ + * | MV buffer 64 bytes x MBs | + * +---------------------------+ + * | MC sync 32 bytes | + * +---------------------------+ + */ + return 64 * MB_WIDTH(width) * MB_WIDTH(height) + 32; +} + void hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx); void rk3399_vpu_mpeg2_dec_run(struct hantro_ctx *ctx); void hantro_mpeg2_dec_copy_qtable(u8 *qtable, diff --git a/drivers/staging/media/hantro/hantro_v4l2.c b/drivers/staging/media/hantro/hantro_v4l2.c index 3142ab6697d5..458b502ff01b 100644 --- a/drivers/staging/media/hantro/hantro_v4l2.c +++ b/drivers/staging/media/hantro/hantro_v4l2.c @@ -273,32 +273,11 @@ static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f, /* Fill remaining fields */ v4l2_fill_pixfmt_mp(pix_mp, fmt->fourcc, pix_mp->width, pix_mp->height); - /* - * A decoded 8-bit 4:2:0 NV12 frame may need memory for up to - * 448 bytes per macroblock with additional 32 bytes on - * multi-core variants. - * - * The H264 decoder needs extra space on the output buffers - * to store motion vectors. This is needed for reference - * frames and only if the format is non-post-processed NV12. - * - * Memory layout is as follow: - * - * +---------------------------+ - * | Y-plane 256 bytes x MBs | - * +---------------------------+ - * | UV-plane 128 bytes x MBs | - * +---------------------------+ - * | MV buffer 64 bytes x MBs | - * +---------------------------+ - * | MC sync 32 bytes | - * +---------------------------+ - */ if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_H264_SLICE && !hantro_needs_postproc(ctx, fmt)) pix_mp->plane_fmt[0].sizeimage += - 64 * MB_WIDTH(pix_mp->width) * - MB_WIDTH(pix_mp->height) + 32; + hantro_h264_mv_size(pix_mp->width, + pix_mp->height); } else if (!pix_mp->plane_fmt[0].sizeimage) { /* * For coded formats the application can specify |