KS_H264VIDEOINFO - NtDoc
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headers
// ksmedia.h
typedef struct tagKS_H264VIDEOINFO {
WORD wWidth;
WORD wHeight;
WORD wSARwidth;
WORD wSARheight;
WORD wProfile;
BYTE bLevelIDC;
WORD wConstrainedToolset;
DWORD bmSupportedUsages;
WORD bmCapabilities;
DWORD bmSVCCapabilities;
DWORD bmMVCCapabilities;
DWORD dwFrameInterval;
BYTE bMaxCodecConfigDelay;
BYTE bmSupportedSliceModes;
BYTE bmSupportedSyncFrameTypes;
BYTE bResolutionScaling;
BYTE bSimulcastSupport;
BYTE bmSupportedRateControlModes;
WORD wMaxMBperSecOneResolutionNoScalability;
WORD wMaxMBperSecTwoResolutionsNoScalability;
WORD wMaxMBperSecThreeResolutionsNoScalability;
WORD wMaxMBperSecFourResolutionsNoScalability;
WORD wMaxMBperSecOneResolutionTemporalScalability;
WORD wMaxMBperSecTwoResolutionsTemporalScalablility;
WORD wMaxMBperSecThreeResolutionsTemporalScalability;
WORD wMaxMBperSecFourResolutionsTemporalScalability;
WORD wMaxMBperSecOneResolutionTemporalQualityScalability;
WORD wMaxMBperSecTwoResolutionsTemporalQualityScalability;
WORD wMaxMBperSecThreeResolutionsTemporalQualityScalablity;
WORD wMaxMBperSecFourResolutionsTemporalQualityScalability;
WORD wMaxMBperSecOneResolutionTemporalSpatialScalability;
WORD wMaxMBperSecTwoResolutionsTemporalSpatialScalability;
WORD wMaxMBperSecThreeResolutionsTemporalSpatialScalablity;
WORD wMaxMBperSecFourResolutionsTemporalSpatialScalability;
WORD wMaxMBperSecOneResolutionFullScalability;
WORD wMaxMBperSecTwoResolutionsFullScalability;
WORD wMaxMBperSecThreeResolutionsFullScalability;
WORD wMaxMBperSecFourResolutionsFullScalability;
} KS_H264VIDEOINFO, *PKS_H264VIDEOINFO;
View the official Windows Driver Kit DDI referenceNo description available.
The KS_H264VIDEOINFO describes the device capabilities that apply to the current media type.
wWidthSpecifies the width in pixels of pictures output from the decoding process.
The value for this member must be a multiple of 2, but it does not have to be an integer multiple of 16. It can be specified using a frame cropping rectangle in the active Sequence Parameter Set (SPS).
wHeightSpecifies the height in pixels of pictures output from the decoding process.
The value for this member must be a multiple of 2. When field coding or frame/field adaptive coding is used, it must be a multiple of 4. It does not have to be an integer multiple of 16. It can be specified using a frame cropping rectangle in the active SPS.
wSARwidthSpecifies the sample aspect ratio width as defined in the H.264 Annex E.
It must be relatively prime with respect to wSARheight.
wSARheightSpecifies the sample aspect ratio height as defined in the H.264 Annex E.
It must be relatively prime with respect to bSARwidth.
wProfileSpecifies the first two bytes of the sequence parameter set as described by profile_idc and constraint flags in the H.264 specification.
This member indicates the profile and applicable constraints to be used.
The following are examples of allowed values:
| Value | Description |
|---|---|
| 0x4240 | Constrained Baseline Profile. |
| 0x4200 | Baseline Profile. |
| 0x4D00 | Main Profile. |
| 0x6400 | High Profile. |
| 0x5300 | Scalable Baseline Profile. |
| 0x5600 | Scalable High Profile. |
| 0x7600 | Multiview High Profile. |
| 0x8000 | Stereo High Profile. |
bLevelIDCSpecifies the level as described by the level_idc flag.
This member indicates the minimum level that supports the resolution and the maximum bit rate for this frame descriptor.
The following are examples of allowed values:
| Value | Description |
|---|---|
| 0x1F | Level 3.1. |
| 0x28 | Level 4.0. |
wConstrainedToolsetConstrains the features allowed by wProfile.
| Value | Description |
|---|---|
| 0 | No constraints. All tools defined by the selected wProfile and the bmSetting set are allowed. |
| 1 | Unified Communication (UC) Constrained High Toolset. |
| 2 | UC Scalable Constrained High1. |
| 3 | UC Scalable Constrained Baseline1. |
| 4 to 65535 | Reserved. |
bmSupportedUsagesDefines the bitmap that specifies the supported usages.
| Bits | Description |
|---|---|
| D0 | Real-time/UCConfig (Unified Communication Configuration) mode 0. |
| D1 | Real-time/UCConfig mode 1. |
| D2 | Real-time/UCConfig mode 2Q. |
| D3 | Real-time/UCConfig mode 2S. |
| D4 | Real-time/UCConfig mode 3. |
| D7-D5 | Reserved; set to 0. |
| D15-D8 | Broadcast modes. |
| D16 | File storage mode with I and P slices (for example, IPPP). |
| D17 | File storage mode with I, P and B slices (for example, IB...IP). |
| D18 | File storage all-I-frame mode. |
| D23-D19 | Reserved; set to 0. |
| D24 | MVC Stereo High Mode. |
| D25 | MVC Multiview Mode. |
| D31-D26 | Reserved; set to 0. |
bmCapabilitiesDefines the bitmap that specifies the capabilities for this frame descriptor.
| Bits | Description |
|---|---|
| D0 | Context based Adaptive Variable Length Coding (CAVLC ) only. |
| D1 | Context based Adaptive Binary Arithmetic Coding (CABAC) only. |
| D2 | Constant frame rate. |
| D3 | Separate QP for luma/chroma. |
| D4 | Separate QP for Cb/Cr. |
| D5 | No picture reordering. |
| D15-D6 | Reserved; set to 0. |
bmSVCCapabilitiesDefines the bitmap that specifies the Scalable Video Coding (SVC) capabilities.
| Bits | Description |
|---|---|
| D2-D0 | Maximum number of temporal layers minus 1. |
| D3 | Rewrite support. |
| D6-D4 | Maximum number of Coarse Grained Scalability (CGS) layers minus 1. |
| D9-D7 | Maximum number of Medium Grained Scalability (MGS) sublayers. |
| D10 | Additional SNR scalability support in spatial enhancement layers. |
| D13-D11 | Maximum number of spatial layers minus 1. |
| D31-D14 | Reserved. |
bmMVCCapabilitiesDefines the bitmap that specifies the Multicast Video Coding (MVC) capabilities.
| Bits | Description |
|---|---|
| D2-D0 | Maximum number of temporal layers minus 1. |
| D11-D3 | Maximum number of view components minus 1. |
| D31-D11 | Reserved. |
dwFrameIntervalSpecifies the supported frame interval.
This is the shortest frame interval supported, at the highest frame rate, in 100-nanoseconds units.
bMaxCodecConfigDelaySpecifies the maximum number of frames the encoder takes to respond to a command.
bmSupportedSliceModesDefines the bitmap that specifies the slice modes.
| Bits | Description |
|---|---|
| D0 | Slice mode 0. |
| D1 | Slice mode 1. |
| D7-D2 | Reserved. |
bmSupportedSyncFrameTypesDefines the BYTE member bmSupportedSyncFrameTypes.
bResolutionScalingDefines the bitmap that specifies the synchronization frame types.
| Bits | Description |
|---|---|
| D0 | Instantaneous Decoding Refresh (IDR) frame with Sequence Parameter Set (SPS) and Picture Parameter Set (PPS) headers. |
| D1 | IDR frame (with SPS and PPS headers) that is a long term reference frame. |
| D2 | Random-access I frame (with SPS and PPS headers), which may or may not be an IDR frame. |
| D3 | P frame that is a long term reference frame. |
| D7-D4 | Reserved; set to 0. |
bSimulcastSupportSpecifies the number of H.264 video streaming endpoints and the number of streams this endpoint supports.
| Value | Description |
|---|---|
| 0 | One endpoint and one stream. |
| 1 | One endpoint and multiple streams. |
bmSupportedRateControlModesDefines the bitmap that specifies the rate control modes.
| Bits | Description |
|---|---|
| D0 | Variable bit rate (VBR) with underflow allowed (H.264 low_delay_hrd_flag = 1). |
| D1 | Constant bit rate (CBR) (H.264 low_delay_hrd_flag = 0). |
| D2 | Constant QP. |
| D3 | Global VBR with underflow allowed (H.264 low_delay_hrd_flag = 1). |
| D4 | VBR without underflow (H.264 low_delay_hrd_flag = 0). |
| D5 | Global VBR without underflow (H.264 low_delay_hrd_flag = 0). |
| D7-D6 | Reserved, set to 0. |
wMaxMBperSecOneResolutionNoScalabilitySpecifies the maximum macroblock processing rate allowed for non-scalable Advanced Video Coding (AVC) streams, summing up across all layers when all layers have the same resolution.
wMaxMBperSecTwoResolutionsNoScalabilitySpecifies the maximum macroblock processing rate allowed for non-scalable AVC streams, summing up across all layers when all layers consist of two different resolutions.
wMaxMBperSecThreeResolutionsNoScalabilitySpecifies the maximum macroblock processing rate allowed for non-scalable AVC streams, summing up across all layers when all layers consist of three different resolutions.
wMaxMBperSecFourResolutionsNoScalabilitySpecifies the maximum macroblock processing rate allowed for non-scalable AVC streams, summing up across all layers when all layers consist of four different resolutions.
wMaxMBperSecOneResolutionTemporalScalabilitySpecifies the maximum macroblock processing rate allowed for temporal scalable streams, summing up across all layers when all layers have the same resolution.
wMaxMBperSecTwoResolutionsTemporalScalablilitySpecifies the maximum macroblock processing rate allowed for temporal scalable streams, summing up across all layers when all layers consist of two different resolutions.
wMaxMBperSecThreeResolutionsTemporalScalabilitySpecifies the maximum macroblock processing rate allowed for temporal scalable streams, summing up across all layers when all layers consist of three different resolutions.
wMaxMBperSecFourResolutionsTemporalScalabilitySpecifies the maximum macroblock processing rate allowed for fully scalable streams, summing up across all layers when all layers consist of four different resolutions.
wMaxMBperSecOneResolutionTemporalQualityScalabilitySpecifies the maximum macroblock processing rate allowed for temporal and quality scalable SVC streams, summing up across all layers when all layers have the same resolution.
wMaxMBperSecTwoResolutionsTemporalQualityScalabilitySpecifies the maximum macroblock processing rate allowed for temporal and quality scalable SVC streams, summing up across all layers when all layers consist of two different resolutions.
wMaxMBperSecThreeResolutionsTemporalQualityScalablitySpecifies the maximum macroblock processing rate allowed for temporal and quality scalable SVC streams, summing up across all layers when all layers consist of three different resolutions.
wMaxMBperSecFourResolutionsTemporalQualityScalabilitySpecifies the maximum macroblock processing rate allowed for temporal and quality scalable SVC streams, summing up across all layers when all layers consist of four different resolutions.
wMaxMBperSecOneResolutionTemporalSpatialScalabilityDefines the WORD member wMaxMBperSecOneResolutionTemporalSpatialScalability.
wMaxMBperSecTwoResolutionsTemporalSpatialScalabilityDefines the WORD member wMaxMBperSecTwoResolutionsTemporalSpatialScalability.
wMaxMBperSecThreeResolutionsTemporalSpatialScalablityDefines the WORD member wMaxMBperSecThreeResolutionsTemporalSpatialScalablity.
wMaxMBperSecFourResolutionsTemporalSpatialScalabilityDefines the WORD member wMaxMBperSecFourResolutionsTemporalSpatialScalability.
wMaxMBperSecOneResolutionFullScalabilitySpecifies the maximum macroblock processing rate allowed for fully scalable streams, summing up across all layers when all layers have the same resolution.
wMaxMBperSecTwoResolutionsFullScalabilitySpecifies the maximum macroblock processing rate allowed for fully scalable streams, summing up across all layers when all layers consist of two different resolutions.
wMaxMBperSecThreeResolutionsFullScalabilitySpecifies the maximum macroblock processing rate allowed for fully scalable streams, summing up across all layers when all layers consist of three different resolutions.
wMaxMBperSecFourResolutionsFullScalabilitySpecifies the maximum macroblock processing rate allowed for fully scalable streams, summing up across all layers when all layers consist of four different resolutions.
The KS_H264VIDEOINFO structure contains the frame and the format descriptor information.