1 /*****************************************************************************
2 * video_parser.h : video parser thread
4 *****************************************************************************
5 *****************************************************************************
17 *****************************************************************************/
19 /*****************************************************************************
20 * vpar_thread_t: video parser thread descriptor
21 *****************************************************************************
23 *****************************************************************************/
24 typedef struct vpar_thread_s
26 /* Thread properties and locks */
27 boolean_t b_die; /* `die' flag */
28 boolean_t b_run; /* `run' flag */
29 boolean_t b_error; /* `error' flag */
30 boolean_t b_active; /* `active' flag */
31 vlc_thread_t thread_id; /* id for thread functions */
33 /* Thread configuration */
39 /* Input properties */
40 decoder_fifo_t fifo; /* PES input fifo */
42 /* The bit stream structure handles the PES stream at the bit level */
43 bit_stream_t bit_stream;
45 /* Output properties */
46 vout_thread_t * p_vout; /* video output thread */
47 int i_stream; /* video stream id */
49 /* Decoder properties */
50 struct vdec_thread_s * p_vdec[NB_VDEC];
52 video_buffer_t vbuffer;
54 /* Parser properties */
56 picture_parsing_t picture;
57 slice_parsing_t slice;
58 macroblock_parsing_t mb;
59 video_synchro_t synchro;
62 #ifdef MPEG2_COMPLIANT
63 s16 pi_crop_buf[8192];
66 lookup_t pl_mb_addr_inc[2048]; /* for macroblock
68 /* tables for macroblock types 0=P 1=B */
69 lookup_t ppl_mb_type[2][64];
70 /* table for coded_block_pattern */
71 lookup_t * pl_coded_pattern;
72 /* variable length codes for the structure dct_dc_size for intra blocks */
73 lookup_t * pppl_dct_dc_size[2][2];
77 count_t c_loops; /* number of loops */
78 count_t c_idle_loops; /* number of idle loops */
79 count_t c_sequences; /* number of sequences */
80 count_t c_pictures; /* number of pictures read */
81 count_t c_i_pictures; /* number of I pictures read */
82 count_t c_p_pictures; /* number of P pictures read */
83 count_t c_b_pictures; /* number of B pictures read */
84 count_t c_decoded_pictures; /* number of pictures decoded */
85 count_t c_decoded_i_pictures; /* number of I pictures decoded */
86 count_t c_decoded_p_pictures; /* number of P pictures decoded */
87 count_t c_decoded_b_pictures; /* number of B pictures decoded */
96 /*****************************************************************************
98 *****************************************************************************/
100 /* Thread management functions */
101 vpar_thread_t * vpar_CreateThread ( /* video_cfg_t *p_cfg, */ input_thread_t *p_input /*,
102 vout_thread_t *p_vout, int *pi_status */ );
103 void vpar_DestroyThread ( vpar_thread_t *p_vpar /*, int *pi_status */ );
105 /* Time management functions */
108 /* Dynamic thread settings */
111 /*****************************************************************************
113 *****************************************************************************
114 * Quantizer scale factor (ISO/IEC 13818-2 7.4.2.2)
115 *****************************************************************************/
116 static __inline__ void LoadQuantizerScale( struct vpar_thread_s * p_vpar )
118 /* Quantization coefficient table */
119 static u8 ppi_quantizer_scale[3][32] =
125 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,
126 32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62
130 0, 1, 2, 3, 4, 5, 6, 7, 8, 10,12,14,16,18,20, 22,
131 24,28,32,36,40,44,48,52,56,64,72,80,88,96,104,112
135 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
136 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
140 p_vpar->slice.i_quantizer_scale = ppi_quantizer_scale
141 [(!p_vpar->sequence.b_mpeg2 << 1) | p_vpar->picture.b_q_scale_type]
142 [GetBits( &p_vpar->bit_stream, 5 )];