2017-09-27 16:20:30 +08:00
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#ifndef _SPSPARSER_H_
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#define _SPSPARSER_H_
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2017-04-01 16:35:56 +08:00
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#if defined (__cplusplus)
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extern "C" {
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#endif
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#define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
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/**
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* Chromaticity coordinates of the source primaries.
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*/
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enum T_AVColorPrimaries {
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AVCOL_PRI_RESERVED0 = 0,
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AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
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AVCOL_PRI_UNSPECIFIED = 2,
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AVCOL_PRI_RESERVED = 3,
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AVCOL_PRI_BT470M = 4, ///< also FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
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AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
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AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
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AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above
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AVCOL_PRI_FILM = 8, ///< colour filters using Illuminant C
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AVCOL_PRI_BT2020 = 9, ///< ITU-R BT2020
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AVCOL_PRI_NB, ///< Not part of ABI
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};
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/**
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* Color Transfer Characteristic.
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*/
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enum T_AVColorTransferCharacteristic {
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AVCOL_TRC_RESERVED0 = 0,
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AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361
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AVCOL_TRC_UNSPECIFIED = 2,
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AVCOL_TRC_RESERVED = 3,
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AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
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AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG
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AVCOL_TRC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 or 625 / ITU-R BT1358 525 or 625 / ITU-R BT1700 NTSC
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AVCOL_TRC_SMPTE240M = 7,
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AVCOL_TRC_LINEAR = 8, ///< "Linear transfer characteristics"
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AVCOL_TRC_LOG = 9, ///< "Logarithmic transfer characteristic (100:1 range)"
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AVCOL_TRC_LOG_SQRT = 10, ///< "Logarithmic transfer characteristic (100 * Sqrt(10) : 1 range)"
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AVCOL_TRC_IEC61966_2_4 = 11, ///< IEC 61966-2-4
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AVCOL_TRC_BT1361_ECG = 12, ///< ITU-R BT1361 Extended Colour Gamut
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AVCOL_TRC_IEC61966_2_1 = 13, ///< IEC 61966-2-1 (sRGB or sYCC)
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AVCOL_TRC_BT2020_10 = 14, ///< ITU-R BT2020 for 10 bit system
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AVCOL_TRC_BT2020_12 = 15, ///< ITU-R BT2020 for 12 bit system
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AVCOL_TRC_NB, ///< Not part of ABI
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};
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/**
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* YUV tColorspace type.
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*/
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enum T_AVColorSpace {
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AVCOL_SPC_RGB = 0, ///< order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB)
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AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
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AVCOL_SPC_UNSPECIFIED = 2,
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AVCOL_SPC_RESERVED = 3,
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AVCOL_SPC_FCC = 4, ///< FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
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AVCOL_SPC_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
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AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
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AVCOL_SPC_SMPTE240M = 7,
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AVCOL_SPC_YCOCG = 8, ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
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AVCOL_SPC_BT2020_NCL = 9, ///< ITU-R BT2020 non-constant luminance system
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AVCOL_SPC_BT2020_CL = 10, ///< ITU-R BT2020 constant luminance system
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AVCOL_SPC_NB, ///< Not part of ABI
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};
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/**
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* rational number numerator/denominator
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*/
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typedef struct T_AVRational{
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int num; ///< numerator
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int den; ///< denominator
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} T_AVRational;
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/***
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* Sequence parameter set
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* ¿É²Î¿¼H264±ê×¼µÚ7½ÚºÍ¸½Â¼D E
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*/
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#define Extended_SAR 255
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/**
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* Sequence parameter set
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*/
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typedef struct T_SPS {
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unsigned int uiSpsId;
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int iProfileIdc;
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int iLevelIdc;
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int iChromaFormatIdc;
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int iTransformBypass; ///< qpprime_y_zero_transform_bypass_flag
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int iLog2MaxFrameNum; ///< log2_max_frame_num_minus4 + 4
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int iPocType; ///< pic_order_cnt_type
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int iLog2MaxPocLsb; ///< log2_max_pic_order_cnt_lsb_minus4
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int iDeltaPicOrderAlwaysZeroFlag;
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int iOffsetForNonRefPic;
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int iOffsetForTopToBottomField;
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int iPocCycleLength; ///< num_ref_frames_in_pic_order_cnt_cycle
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int iRefFrameCount; ///< num_ref_frames
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int iGapsInFrameNumAllowedFlag;
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int iMbWidth; ///< pic_width_in_mbs_minus1 + 1
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int iMbHeight; ///< pic_height_in_map_units_minus1 + 1
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int iFrameMbsOnlyFlag;
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int iMbAff; ///< mb_adaptive_frame_field_flag
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int iDirect8x8InferenceFlag;
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int iCrop; ///< frame_cropping_flag
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/* those 4 are already in luma samples */
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unsigned int uiCropLeft; ///< frame_cropping_rect_left_offset
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unsigned int uiCropRight; ///< frame_cropping_rect_right_offset
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unsigned int uiCropTop; ///< frame_cropping_rect_top_offset
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unsigned int uiCropBottom; ///< frame_cropping_rect_bottom_offset
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int iVuiParametersPresentFlag;
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T_AVRational tSar;
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int iVideoSignalTypePresentFlag;
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int iFullRange;
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int iColourDescriptionPresentFlag;
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enum T_AVColorPrimaries tColorPrimaries;
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enum T_AVColorTransferCharacteristic tColorTrc;
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enum T_AVColorSpace tColorspace;
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int iTimingInfoPresentFlag;
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uint32_t u32NumUnitsInTick;
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uint32_t u32TimeScale;
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int iFixedFrameRateFlag;
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short asOffsetForRefFrame[256]; // FIXME dyn aloc?
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int iBitstreamRestrictionFlag;
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int iNumReorderFrames;
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int iScalingMatrixPresent;
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uint8_t aau8ScalingMatrix4[6][16];
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uint8_t aau8ScalingMatrix8[6][64];
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int iNalHrdParametersPresentFlag;
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int iVclHrdParametersPresentFlag;
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int iPicStructPresentFlag;
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int iTimeOffsetLength;
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int iCpbCnt; ///< See H.264 E.1.2
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int iInitialCpbRemovalDelayLength; ///< initial_cpb_removal_delay_length_minus1 + 1
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int iCpbRemovalDelayLength; ///< cpb_removal_delay_length_minus1 + 1
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int iDpbOutputDelayLength; ///< dpb_output_delay_length_minus1 + 1
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int iBitDepthLuma; ///< bit_depth_luma_minus8 + 8
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int iBitDepthChroma; ///< bit_depth_chroma_minus8 + 8
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int iResidualColorTransformFlag; ///< residual_colour_transform_flag
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int iConstraintSetFlags; ///< constraint_set[0-3]_flag
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int iNew; ///< flag to keep track if the decoder context needs re-init due to changed SPS
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} T_SPS;
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/**
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* Picture parameter set
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*/
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typedef struct T_PPS {
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unsigned int uiSpsId;
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int iCabac; ///< entropy_coding_mode_flag
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int iPicOrderPresent; ///< pic_order_present_flag
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int iSliceGroupCount; ///< num_slice_groups_minus1 + 1
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int iMbSliceGroupMapType;
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unsigned int auiRefCount[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
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int iWeightedPred; ///< weighted_pred_flag
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int iWeightedBipredIdc;
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int iInitQp; ///< pic_init_qp_minus26 + 26
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int iInitQs; ///< pic_init_qs_minus26 + 26
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int aiChromaQpIndexOffset[2];
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int iDeblockingFilterParametersPresent; ///< deblocking_filter_parameters_present_flag
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int iConstrainedIntraPred; ///< constrained_intra_pred_flag
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int iRedundantPicCntPresent; ///< redundant_pic_cnt_present_flag
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int iTransform8x8Mode; ///< transform_8x8_mode_flag
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uint8_t aau8ScalingMatrix4[6][16];
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uint8_t aau8ScalingMatrix8[6][64];
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uint8_t u8ChromaQpTable[2][QP_MAX_NUM+1]; ///< pre-scaled (with aiChromaQpIndexOffset) version of qp_table
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int iChromaQpDiff;
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} T_PPS;
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typedef struct T_GetBitContext{
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uint8_t *pu8Buf; /*Ö¸ÏòSPS start*/
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int iBufSize; /*SPS ³¤¶È*/
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int iBitPos; /*bitÒѶÁȡλÖÃ*/
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int iTotalBit; /*bit×ܳ¤¶È*/
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int iCurBitPos; /*µ±Ç°¶ÁȡλÖÃ*/
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}T_GetBitContext;
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int h264DecSeqParameterSet(void *pvBuf, T_SPS *ptSps);
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void h264GetWidthHeight(T_SPS *ptSps, int *piWidth, int *piHeight);
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void h264GeFramerate(T_SPS *ptSps, float *pfFramerate);
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#if defined (__cplusplus)
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}
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#endif
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2017-09-27 16:20:30 +08:00
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#endif //_SPS_PPS_H_
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