H.264/AVC Reference Software Decoder: parsetcommon.h Source File

00001 
00018 // In the JVT syntax, frequently flags are used that indicate the presence of
00019 // certain pieces of information in the NALU.  Here, these flags are also
00020 // present.  In the encoder, those bits indicate that the values signalled to
00021 // be present are meaningful and that this part of the syntax should be
00022 // written to the NALU.  In the decoder, the flag indicates that information
00023 // was received from the decoded NALU and should be used henceforth.
00024 // The structure names were chosen as indicated in the JVT syntax
00025 
00026 #ifndef _PARSETCOMMON_H_
00027 #define _PARSETCOMMON_H_
00028 
00029 #include "defines.h"
00030 
00031 #define MAXIMUMPARSETRBSPSIZE   1500
00032 #define MAXIMUMPARSETNALUSIZE   1500
00033 
00034 #define MAXSPS  32
00035 #define MAXPPS  256
00036 
00038 #ifdef FALSE
00039 #  define Boolean int
00040 #else
00041 typedef enum {
00042   FALSE,
00043   TRUE
00044 } Boolean;
00045 #endif
00046 
00047 #define MAXIMUMVALUEOFcpb_cnt   32
00048 typedef struct
00049 {
00050   unsigned int cpb_cnt_minus1;                                   // ue(v)
00051   unsigned int bit_rate_scale;                                   // u(4)
00052   unsigned int cpb_size_scale;                                   // u(4)
00053     unsigned int bit_rate_value_minus1 [MAXIMUMVALUEOFcpb_cnt];  // ue(v)
00054     unsigned int cpb_size_value_minus1 [MAXIMUMVALUEOFcpb_cnt];  // ue(v)
00055     unsigned int cbr_flag              [MAXIMUMVALUEOFcpb_cnt];  // u(1)
00056   unsigned int initial_cpb_removal_delay_length_minus1;          // u(5)
00057   unsigned int cpb_removal_delay_length_minus1;                  // u(5)
00058   unsigned int dpb_output_delay_length_minus1;                   // u(5)
00059   unsigned int time_offset_length;                               // u(5)
00060 } hrd_parameters_t;
00061 
00062 
00063 typedef struct
00064 {
00065   Boolean      aspect_ratio_info_present_flag;                   // u(1)
00066     unsigned int aspect_ratio_idc;                               // u(8)
00067       unsigned int sar_width;                                    // u(16)
00068       unsigned int sar_height;                                   // u(16)
00069   Boolean      overscan_info_present_flag;                       // u(1)
00070     Boolean      overscan_appropriate_flag;                      // u(1)
00071   Boolean      video_signal_type_present_flag;                   // u(1)
00072     unsigned int video_format;                                   // u(3)
00073     Boolean      video_full_range_flag;                          // u(1)
00074     Boolean      colour_description_present_flag;                // u(1)
00075       unsigned int colour_primaries;                             // u(8)
00076       unsigned int transfer_characteristics;                     // u(8)
00077       unsigned int matrix_coefficients;                          // u(8)
00078   Boolean      chroma_location_info_present_flag;                // u(1)
00079     unsigned int  chroma_sample_loc_type_top_field;               // ue(v)
00080     unsigned int  chroma_sample_loc_type_bottom_field;            // ue(v)
00081   Boolean      timing_info_present_flag;                         // u(1)
00082     unsigned int num_units_in_tick;                              // u(32)
00083     unsigned int time_scale;                                     // u(32)
00084     Boolean      fixed_frame_rate_flag;                          // u(1)
00085   Boolean      nal_hrd_parameters_present_flag;                  // u(1)
00086     hrd_parameters_t nal_hrd_parameters;                      // hrd_paramters_t
00087   Boolean      vcl_hrd_parameters_present_flag;                  // u(1)
00088     hrd_parameters_t vcl_hrd_parameters;                      // hrd_paramters_t
00089   // if ((nal_hrd_parameters_present_flag || (vcl_hrd_parameters_present_flag))
00090     Boolean      low_delay_hrd_flag;                             // u(1)
00091   Boolean      pic_struct_present_flag;                        // u(1)
00092   Boolean      bitstream_restriction_flag;                       // u(1)
00093     Boolean      motion_vectors_over_pic_boundaries_flag;        // u(1)
00094     unsigned int max_bytes_per_pic_denom;                        // ue(v)
00095     unsigned int max_bits_per_mb_denom;                          // ue(v)
00096     unsigned int log2_max_mv_length_vertical;                    // ue(v)
00097     unsigned int log2_max_mv_length_horizontal;                  // ue(v)
00098     unsigned int num_reorder_frames;                             // ue(v)
00099     unsigned int max_dec_frame_buffering;                        // ue(v)
00100 } vui_seq_parameters_t;
00101 
00102 
00103 #define MAXnum_slice_groups_minus1  8
00104 typedef struct
00105 {
00106   Boolean   Valid;                  // indicates the parameter set is valid
00107   unsigned int pic_parameter_set_id;                             // ue(v)
00108   unsigned int seq_parameter_set_id;                             // ue(v)
00109   Boolean   entropy_coding_mode_flag;                         // u(1)
00110 
00111   Boolean   transform_8x8_mode_flag;                          // u(1)
00112 
00113   Boolean   pic_scaling_matrix_present_flag;                  // u(1)
00114   int       pic_scaling_list_present_flag[12];                 // u(1)
00115   int       ScalingList4x4[6][16];                            // se(v)
00116   int       ScalingList8x8[6][64];                            // se(v)
00117   Boolean   UseDefaultScalingMatrix4x4Flag[6];
00118   Boolean   UseDefaultScalingMatrix8x8Flag[6];
00119 
00120   // if( pic_order_cnt_type < 2 )  in the sequence parameter set
00121   Boolean      pic_order_present_flag;                           // u(1)
00122   unsigned int num_slice_groups_minus1;                          // ue(v)
00123     unsigned int slice_group_map_type;                        // ue(v)
00124     // if( slice_group_map_type = = 0 )
00125       unsigned int run_length_minus1[MAXnum_slice_groups_minus1]; // ue(v)
00126     // else if( slice_group_map_type = = 2 )
00127       unsigned int top_left[MAXnum_slice_groups_minus1];         // ue(v)
00128       unsigned int bottom_right[MAXnum_slice_groups_minus1];     // ue(v)
00129     // else if( slice_group_map_type = = 3 || 4 || 5
00130       Boolean   slice_group_change_direction_flag;            // u(1)
00131       unsigned int slice_group_change_rate_minus1;               // ue(v)
00132     // else if( slice_group_map_type = = 6 )
00133       unsigned int num_slice_group_map_units_minus1;             // ue(v)
00134       unsigned char *slice_group_id;                              // complete MBAmap u(v)
00135 
00136   int num_ref_idx_l0_active_minus1;                     // ue(v)
00137   int num_ref_idx_l1_active_minus1;                     // ue(v)
00138   Boolean   weighted_pred_flag;                               // u(1)
00139   unsigned int  weighted_bipred_idc;                              // u(2)
00140   int       pic_init_qp_minus26;                              // se(v)
00141   int       pic_init_qs_minus26;                              // se(v)
00142   int       chroma_qp_index_offset;                           // se(v)
00143 
00144   int       second_chroma_qp_index_offset;                    // se(v)
00145 
00146   Boolean   deblocking_filter_control_present_flag;           // u(1)
00147   Boolean   constrained_intra_pred_flag;                      // u(1)
00148   Boolean   redundant_pic_cnt_present_flag;                   // u(1)
00149 } pic_parameter_set_rbsp_t;
00150 
00151 
00152 #define MAXnum_ref_frames_in_pic_order_cnt_cycle  256
00153 typedef struct
00154 {
00155   Boolean   Valid;                  // indicates the parameter set is valid
00156 
00157   unsigned int profile_idc;                                      // u(8)
00158   Boolean   constrained_set0_flag;                            // u(1)
00159   Boolean   constrained_set1_flag;                            // u(1)
00160   Boolean   constrained_set2_flag;                            // u(1)
00161   Boolean   constrained_set3_flag;                            // u(1)
00162   unsigned  int level_idc;                                        // u(8)
00163   unsigned  int seq_parameter_set_id;                             // ue(v)
00164   unsigned  int chroma_format_idc;                                // ue(v)
00165 
00166   Boolean   seq_scaling_matrix_present_flag;                   // u(1)
00167   int       seq_scaling_list_present_flag[12];                 // u(1)
00168   int       ScalingList4x4[6][16];                             // se(v)
00169   int       ScalingList8x8[6][64];                             // se(v)
00170   Boolean   UseDefaultScalingMatrix4x4Flag[6];
00171   Boolean   UseDefaultScalingMatrix8x8Flag[6];
00172 
00173   unsigned int bit_depth_luma_minus8;                            // ue(v)
00174   unsigned int bit_depth_chroma_minus8;                          // ue(v)
00175   unsigned int log2_max_frame_num_minus4;                        // ue(v)
00176   unsigned int pic_order_cnt_type;
00177   // if( pic_order_cnt_type == 0 )
00178   unsigned int log2_max_pic_order_cnt_lsb_minus4;                 // ue(v)
00179   // else if( pic_order_cnt_type == 1 )
00180     Boolean delta_pic_order_always_zero_flag;               // u(1)
00181     int     offset_for_non_ref_pic;                         // se(v)
00182     int     offset_for_top_to_bottom_field;                 // se(v)
00183     unsigned int num_ref_frames_in_pic_order_cnt_cycle;          // ue(v)
00184     // for( i = 0; i < num_ref_frames_in_pic_order_cnt_cycle; i++ )
00185       int   offset_for_ref_frame[MAXnum_ref_frames_in_pic_order_cnt_cycle];   // se(v)
00186   unsigned int num_ref_frames;                                   // ue(v)
00187   Boolean   gaps_in_frame_num_value_allowed_flag;             // u(1)
00188   unsigned int pic_width_in_mbs_minus1;                          // ue(v)
00189   unsigned int pic_height_in_map_units_minus1;                   // ue(v)
00190   Boolean   frame_mbs_only_flag;                              // u(1)
00191   // if( !frame_mbs_only_flag )
00192     Boolean   mb_adaptive_frame_field_flag;                   // u(1)
00193   Boolean   direct_8x8_inference_flag;                        // u(1)
00194   Boolean   frame_cropping_flag;                              // u(1)
00195     unsigned int frame_cropping_rect_left_offset;                // ue(v)
00196     unsigned int frame_cropping_rect_right_offset;               // ue(v)
00197     unsigned int frame_cropping_rect_top_offset;                 // ue(v)
00198     unsigned int frame_cropping_rect_bottom_offset;              // ue(v)
00199   Boolean   vui_parameters_present_flag;                      // u(1)
00200     vui_seq_parameters_t vui_seq_parameters;                  // vui_seq_parameters_t
00201     unsigned  separate_colour_plane_flag;                       // u(1)
00202 } seq_parameter_set_rbsp_t;
00203 
00204 pic_parameter_set_rbsp_t *AllocPPS (void);
00205 seq_parameter_set_rbsp_t *AllocSPS (void);
00206 
00207 void FreePPS (pic_parameter_set_rbsp_t *pps);
00208 void FreeSPS (seq_parameter_set_rbsp_t *sps);
00209 
00210 int sps_is_equal(seq_parameter_set_rbsp_t *sps1, seq_parameter_set_rbsp_t *sps2);
00211 int pps_is_equal(pic_parameter_set_rbsp_t *pps1, pic_parameter_set_rbsp_t *pps2);
00212 
00213 #endif