Mesa (master): radeon/vcn/enc: Re-write PPS encoding for HEVC

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Module: Mesa
Branch: master
Commit: 2be131f538cf003ccad50304b6adb7ff294b7028
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2be131f538cf003ccad50304b6adb7ff294b7028

Author: Boyuan Zhang <boyuan.zhang at amd.com>
Date:   Thu Jun 11 19:17:03 2020 -0400

radeon/vcn/enc: Re-write PPS encoding for HEVC

Due to hardware change on VCN3

Signed-off-by: Boyuan Zhang <boyuan.zhang at amd.com>
Signed-off-by: Leo Liu <leo.liu at amd.com>
Reviewed-by: Thong Thai <thong.thai at amd.com>
Reviewed-by: Leo Liu <leo.liu at amd.com>
Reviewed-by: James Zhu <James.Zhu at amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5501>

---

 src/gallium/drivers/radeon/radeon_vcn_enc_3_0.c | 65 +++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/src/gallium/drivers/radeon/radeon_vcn_enc_3_0.c b/src/gallium/drivers/radeon/radeon_vcn_enc_3_0.c
index a1d5a964a75..525eaff2122 100644
--- a/src/gallium/drivers/radeon/radeon_vcn_enc_3_0.c
+++ b/src/gallium/drivers/radeon/radeon_vcn_enc_3_0.c
@@ -92,6 +92,68 @@ static void radeon_enc_encode_params_h264(struct radeon_encoder *enc)
    RADEON_ENC_END();
 }
 
+static void radeon_enc_nalu_pps_hevc(struct radeon_encoder *enc)
+{
+   uint32_t *size_in_bytes;
+
+   RADEON_ENC_BEGIN(enc->cmd.nalu);
+   RADEON_ENC_CS(RENCODE_DIRECT_OUTPUT_NALU_TYPE_PPS);
+   size_in_bytes = &enc->cs->current.buf[enc->cs->current.cdw++];
+
+   radeon_enc_reset(enc);
+   radeon_enc_set_emulation_prevention(enc, false);
+   radeon_enc_code_fixed_bits(enc, 0x00000001, 32);
+   radeon_enc_code_fixed_bits(enc, 0x4401, 16);
+   radeon_enc_byte_align(enc);
+   radeon_enc_set_emulation_prevention(enc, true);
+   radeon_enc_code_ue(enc, 0x0);
+   radeon_enc_code_ue(enc, 0x0);
+   radeon_enc_code_fixed_bits(enc, 0x1, 1);
+   radeon_enc_code_fixed_bits(enc, 0x0, 4);
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_fixed_bits(enc, 0x1, 1);
+   radeon_enc_code_ue(enc, 0x0);
+   radeon_enc_code_ue(enc, 0x0);
+   radeon_enc_code_se(enc, 0x0);
+   radeon_enc_code_fixed_bits(enc, enc->enc_pic.hevc_spec_misc.constrained_intra_pred_flag, 1);
+   radeon_enc_code_fixed_bits(enc, 0x1, 1);
+   if (enc->enc_pic.rc_session_init.rate_control_method ==
+      RENCODE_RATE_CONTROL_METHOD_NONE)
+      radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   else {
+      radeon_enc_code_fixed_bits(enc, 0x1, 1);
+      radeon_enc_code_ue(enc, 0x0);
+   }
+   radeon_enc_code_se(enc, enc->enc_pic.hevc_deblock.cb_qp_offset);
+   radeon_enc_code_se(enc, enc->enc_pic.hevc_deblock.cr_qp_offset);
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_fixed_bits(enc, 0x0, 2);
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_fixed_bits(enc, enc->enc_pic.hevc_deblock.loop_filter_across_slices_enabled, 1);
+   radeon_enc_code_fixed_bits(enc, 0x1, 1);
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_fixed_bits(enc, enc->enc_pic.hevc_deblock.deblocking_filter_disabled, 1);
+
+   if (!enc->enc_pic.hevc_deblock.deblocking_filter_disabled) {
+      radeon_enc_code_se(enc, enc->enc_pic.hevc_deblock.beta_offset_div2);
+      radeon_enc_code_se(enc, enc->enc_pic.hevc_deblock.tc_offset_div2);
+   }
+
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_fixed_bits(enc, 0x0, 1);
+   radeon_enc_code_ue(enc, enc->enc_pic.log2_parallel_merge_level_minus2);
+   radeon_enc_code_fixed_bits(enc, 0x0, 2);
+
+   radeon_enc_code_fixed_bits(enc, 0x1, 1);
+
+   radeon_enc_byte_align(enc);
+   radeon_enc_flush_headers(enc);
+   *size_in_bytes = (enc->bits_output + 7) / 8;
+   RADEON_ENC_END();
+}
+
 void radeon_enc_3_0_init(struct radeon_encoder *enc)
 {
    radeon_enc_2_0_init(enc);
@@ -101,6 +163,9 @@ void radeon_enc_3_0_init(struct radeon_encoder *enc)
       enc->encode_params_codec_spec = radeon_enc_encode_params_h264;
    }
 
+   if (u_reduce_video_profile(enc->base.profile) == PIPE_VIDEO_FORMAT_HEVC)
+      enc->nalu_pps = radeon_enc_nalu_pps_hevc;
+
    enc->enc_pic.session_info.interface_version =
       ((RENCODE_FW_INTERFACE_MAJOR_VERSION << RENCODE_IF_MAJOR_VERSION_SHIFT) |
       (RENCODE_FW_INTERFACE_MINOR_VERSION << RENCODE_IF_MINOR_VERSION_SHIFT));