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radv/video: Add low latency encoding

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When VkVideoEncodeUsageInfoKHR has a tuningMode of
VK_VIDEO_ENCODE_TUNING_MODE_LOW_LATENCY_KHR or
VK_VIDEO_ENCODE_TUNING_MODE_ULTRA_LOW_LATENCY_KHR, request low latency
mode for the encoder.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/11958
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32862>
This commit is contained in:
Patrick Nicolas 2024-12-29 12:53:20 +01:00 • committed by Marge Bot
parent 6652eb0ec3
commit 9ef01a0f98
1 changed files with 21 additions and 0 deletions
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21
src/amd/vulkan/radv_video_enc.c
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@ -63,6 +63,7 @@
#define RENCODE_V2_IB_PARAM_ENCODE_CONTEXT_BUFFER 0x00000011
#define RENCODE_V2_IB_PARAM_VIDEO_BITSTREAM_BUFFER 0x00000012
#define RENCODE_V2_IB_PARAM_FEEDBACK_BUFFER 0x00000015
#define RENCODE_V2_IB_PARAM_ENCODE_LATENCY 0x00000018
#define RENCODE_V2_IB_PARAM_ENCODE_STATISTICS 0x00000019
#define RENCODE_V2_IB_PARAM_RATE_CONTROL_PER_PIC_EX 0x0000001d
@ -95,6 +96,7 @@
#define RENCODE_IB_PARAM_FEEDBACK_BUFFER 0x00000010
#define RENCODE_IB_PARAM_RATE_CONTROL_PER_PIC_EX 0x0000001d
#define RENCODE_IB_PARAM_DIRECT_OUTPUT_NALU 0x00000020
#define RENCODE_IB_PARAM_ENCODE_LATENCY 0x00000022
#define RENCODE_IB_PARAM_ENCODE_STATISTICS 0x00000024
#define RENCODE_HEVC_IB_PARAM_SLICE_CONTROL 0x00100001
@ -215,6 +217,7 @@ radv_init_physical_device_encoder(struct radv_physical_device *pdev)
pdev->vcn_enc_cmds.enc_statistics = RENCODE_V4_IB_PARAM_ENCODE_STATISTICS;
} else
pdev->vcn_enc_cmds.enc_statistics = RENCODE_V2_IB_PARAM_ENCODE_STATISTICS;
pdev->vcn_enc_cmds.enc_latency = RENCODE_V2_IB_PARAM_ENCODE_LATENCY;
} else {
pdev->vcn_enc_cmds.session_info = RENCODE_IB_PARAM_SESSION_INFO;
pdev->vcn_enc_cmds.task_info = RENCODE_IB_PARAM_TASK_INFO;
@ -240,6 +243,7 @@ radv_init_physical_device_encoder(struct radv_physical_device *pdev)
pdev->vcn_enc_cmds.enc_params_h264 = RENCODE_H264_IB_PARAM_ENCODE_PARAMS;
pdev->vcn_enc_cmds.deblocking_filter_h264 = RENCODE_H264_IB_PARAM_DEBLOCKING_FILTER;
pdev->vcn_enc_cmds.enc_statistics = RENCODE_IB_PARAM_ENCODE_STATISTICS;
pdev->vcn_enc_cmds.enc_latency = RENCODE_IB_PARAM_ENCODE_LATENCY;
}
}
@ -735,6 +739,22 @@ radv_enc_quality_params(struct radv_cmd_buffer *cmd_buffer)
ENC_END;
}
static void
radv_enc_latency(struct radv_cmd_buffer *cmd_buffer, VkVideoEncodeTuningModeKHR tuning_mode)
{
struct radv_device *device = radv_cmd_buffer_device(cmd_buffer);
const struct radv_physical_device *pdev = radv_device_physical(device);
struct radeon_cmdbuf *cs = cmd_buffer->cs;
if (tuning_mode == VK_VIDEO_ENCODE_TUNING_MODE_LOW_LATENCY_KHR
|| tuning_mode == VK_VIDEO_ENCODE_TUNING_MODE_ULTRA_LOW_LATENCY_KHR)
{
ENC_BEGIN;
radeon_emit(cs, pdev->vcn_enc_cmds.enc_latency);
radeon_emit(cs, 1000);
ENC_END;
}
}
static void
radv_enc_slice_header(struct radv_cmd_buffer *cmd_buffer, const VkVideoEncodeInfoKHR *enc_info)
{
@ -1712,6 +1732,7 @@ begin(struct radv_cmd_buffer *cmd_buffer, const VkVideoEncodeInfoKHR *enc_info)
radv_enc_layer_control(cmd_buffer, &vid->rc_layer_control);
radv_enc_rc_session_init(cmd_buffer);
radv_enc_quality_params(cmd_buffer);
radv_enc_latency(cmd_buffer, vid->vk.enc_usage.tuning_mode);
// temporal layers init
unsigned i = 0;
do {