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media: coda: encoder parameter change support

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Add support for dynamically changing the GOP size, bitrate, frame rate,
constant intra quantization parameter, number of intra refresh macro
blocks and slice mode parameters.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Philipp Zabel
2019-06-18 12:45:35 -04:00
committed by Mauro Carvalho Chehab
parent 0414b47568
commit b152a403a0
4 changed files with 115 additions and 0 deletions
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83
drivers/media/platform/coda/coda-bit.c
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@@ -698,6 +698,79 @@ static u32 coda_slice_mode(struct coda_ctx *ctx)
((1 & CODA_SLICING_MODE_MASK) << CODA_SLICING_MODE_OFFSET);
}
static int coda_enc_param_change(struct coda_ctx *ctx)
{
struct coda_dev *dev = ctx->dev;
u32 change_enable = 0;
u32 success;
int ret;
if (ctx->params.gop_size_changed) {
change_enable |= CODA_PARAM_CHANGE_RC_GOP;
coda_write(dev, ctx->params.gop_size,
CODA_CMD_ENC_PARAM_RC_GOP);
ctx->gopcounter = ctx->params.gop_size - 1;
ctx->params.gop_size_changed = false;
}
if (ctx->params.h264_intra_qp_changed) {
coda_dbg(1, ctx, "parameter change: intra Qp %u\n",
ctx->params.h264_intra_qp);
if (ctx->params.bitrate) {
change_enable |= CODA_PARAM_CHANGE_RC_INTRA_QP;
coda_write(dev, ctx->params.h264_intra_qp,
CODA_CMD_ENC_PARAM_RC_INTRA_QP);
}
ctx->params.h264_intra_qp_changed = false;
}
if (ctx->params.bitrate_changed) {
coda_dbg(1, ctx, "parameter change: bitrate %u kbit/s\n",
ctx->params.bitrate);
change_enable |= CODA_PARAM_CHANGE_RC_BITRATE;
coda_write(dev, ctx->params.bitrate,
CODA_CMD_ENC_PARAM_RC_BITRATE);
ctx->params.bitrate_changed = false;
}
if (ctx->params.framerate_changed) {
coda_dbg(1, ctx, "parameter change: frame rate %u/%u Hz\n",
ctx->params.framerate & 0xffff,
(ctx->params.framerate >> 16) + 1);
change_enable |= CODA_PARAM_CHANGE_RC_FRAME_RATE;
coda_write(dev, ctx->params.framerate,
CODA_CMD_ENC_PARAM_RC_FRAME_RATE);
ctx->params.framerate_changed = false;
}
if (ctx->params.intra_refresh_changed) {
coda_dbg(1, ctx, "parameter change: intra refresh MBs %u\n",
ctx->params.intra_refresh);
change_enable |= CODA_PARAM_CHANGE_INTRA_MB_NUM;
coda_write(dev, ctx->params.intra_refresh,
CODA_CMD_ENC_PARAM_INTRA_MB_NUM);
ctx->params.intra_refresh_changed = false;
}
if (ctx->params.slice_mode_changed) {
change_enable |= CODA_PARAM_CHANGE_SLICE_MODE;
coda_write(dev, coda_slice_mode(ctx),
CODA_CMD_ENC_PARAM_SLICE_MODE);
ctx->params.slice_mode_changed = false;
}
if (!change_enable)
return 0;
coda_write(dev, change_enable, CODA_CMD_ENC_PARAM_CHANGE_ENABLE);
ret = coda_command_sync(ctx, CODA_COMMAND_RC_CHANGE_PARAMETER);
if (ret < 0)
return ret;
success = coda_read(dev, CODA_RET_ENC_PARAM_CHANGE_SUCCESS);
if (success != 1)
coda_dbg(1, ctx, "parameter change failed: %u\n", success);
return 0;
}
static phys_addr_t coda_iram_alloc(struct coda_iram_info *iram, size_t size)
{
phys_addr_t ret;
@@ -1143,6 +1216,9 @@ static int coda_start_encoding(struct coda_ctx *ctx)
}
if (ctx->params.bitrate) {
ctx->params.bitrate_changed = false;
ctx->params.h264_intra_qp_changed = false;
/* Rate control enabled */
value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK)
<< CODA_RATECONTROL_BITRATE_OFFSET;
@@ -1397,6 +1473,13 @@ static int coda_prepare_encode(struct coda_ctx *ctx)
u32 rot_mode = 0;
u32 dst_fourcc;
u32 reg;
int ret;
ret = coda_enc_param_change(ctx);
if (ret < 0) {
v4l2_warn(&ctx->dev->v4l2_dev, "parameter change failed: %d\n",
ret);
}
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);