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