From b152a403a0208aad25f9977f12a2e5a039e246b0 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Tue, 18 Jun 2019 12:45:35 -0400 Subject: media: coda: encoder parameter change support 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 Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda/coda-bit.c | 83 ++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) (limited to 'drivers/media/platform/coda/coda-bit.c') diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index b59cb16f75a1..00c7bed3dd57 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -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); -- cgit v1.2.3-59-g8ed1b