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Implementation for NALU

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dijunkun
2023-09-06 17:30:58 +08:00
parent cea0cfdb95
commit 952bb02df5
8 changed files with 290 additions and 117 deletions
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48
thirdparty/nvcodec/Interface/nvEncodeAPI.h vendored
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@@ -1520,52 +1520,10 @@ typedef struct _NV_ENC_RC_PARAMS {
uint16_t lookaheadDepth; /**< [in]: Maximum depth of lookahead with range
0-(31 - number of B frames). lookaheadDepth is
only used if enableLookahead=1.*/
uint8_t lowDelayKeyFrameScale; /**< [in]: Specifies the ratio of I frame bits
to P frame bits in case of single frame VBV
and CBR rate control mode, is set 2 by
default for low latency tuning info and 1 by
default for ultra low latency tuning info */
uint8_t lowDelayKeyFrameScale;
uint8_t reserved1[3];
NV_ENC_QP_MAP_MODE
qpMapMode; /**< [in]: This flag is used to interpret values in array
specified by NV_ENC_PIC_PARAMS::qpDeltaMap. Set this to
NV_ENC_QP_MAP_EMPHASIS to treat values specified by
NV_ENC_PIC_PARAMS::qpDeltaMap as Emphasis Level Map.
Emphasis Level can be assigned any value specified
in enum NV_ENC_EMPHASIS_MAP_LEVEL. Emphasis Level Map is
used to specify regions to be encoded at varying levels of
quality. The hardware encoder adjusts the quantization
within the image as per the provided emphasis map, by
adjusting the quantization parameter (QP) assigned to each
macroblock. This adjustment is commonly called “Delta QP”.
The adjustment depends on the absolute QP decided by
the rate control algorithm, and is applied after the rate
control has decided each macroblock’s QP. Since the Delta QP
overrides rate control, enabling Emphasis Level Map may
violate bitrate and VBV buffer size constraints. Emphasis
Level Map is useful in situations where client has a priori
knowledge of the image complexity (e.g. via use of NVFBC's
Classification feature) and encoding those high-complexity
areas at higher quality (lower QP) is important, even at the
possible cost of violating bitrate/VBV buffer size
constraints This feature is not supported when AQ(
Spatial/Temporal) is enabled. This feature is only supported
for H264 codec currently.
Set this to NV_ENC_QP_MAP_DELTA to treat values
specified by NV_ENC_PIC_PARAMS::qpDeltaMap as QP Delta. This
specifies QP modifier to be applied on top of the QP chosen
by rate control
Set this to NV_ENC_QP_MAP_DISABLED to ignore
NV_ENC_PIC_PARAMS::qpDeltaMap values. In this case,
qpDeltaMap should be set to NULL.
Other values are reserved for future use.*/
NV_ENC_MULTI_PASS
multiPass; /**< [in]: This flag is used to enable multi-pass encoding for
a given ::NV_ENC_PARAMS_RC_MODE. This flag is not valid for
H264 and HEVC MEOnly mode */
NV_ENC_QP_MAP_MODE qpMapMode;
NV_ENC_MULTI_PASS multiPass;
uint32_t
alphaLayerBitrateRatio; /**< [in]: Specifies the ratio in which bitrate
should be split between base and alpha layer. A