/***************************************************************************** * video_parser.h : video parser thread * (c)1999 VideoLAN ***************************************************************************** ***************************************************************************** * Requires: * "config.h" * "common.h" * "mtime.h" * "vlc_thread.h" * "input.h" * "video.h" * "video_output.h" * "decoder_fifo.h" * "video_fifo.h" * "vpar_headers.h" *****************************************************************************/ /***************************************************************************** * vpar_thread_t: video parser thread descriptor ***************************************************************************** * ?? *****************************************************************************/ typedef struct vpar_thread_s { /* Thread properties and locks */ boolean_t b_die; /* `die' flag */ boolean_t b_run; /* `run' flag */ boolean_t b_error; /* `error' flag */ boolean_t b_active; /* `active' flag */ vlc_thread_t thread_id; /* id for thread functions */ /* Thread configuration */ /* ?? */ /*??*/ // int *pi_status; /* Input properties */ decoder_fifo_t fifo; /* PES input fifo */ /* The bit stream structure handles the PES stream at the bit level */ bit_stream_t bit_stream; /* Output properties */ vout_thread_t * p_vout; /* video output thread */ int i_stream; /* video stream id */ /* Decoder properties */ struct vdec_thread_s * p_vdec[NB_VDEC]; video_fifo_t vfifo; video_buffer_t vbuffer; /* Parser properties */ sequence_t sequence; picture_parsing_t picture; slice_parsing_t slice; macroblock_parsing_t mb; video_synchro_t synchro; /* Lookup tables */ #ifdef MPEG2_COMPLIANT s16 pi_crop_buf[65536]; s16 * pi_crop; #endif lookup_t pl_mb_addr_inc[2048]; /* for macroblock address increment */ /* tables for macroblock types 0=P 1=B */ lookup_t ppl_mb_type[2][64]; /* table for coded_block_pattern */ lookup_t pl_coded_pattern[512]; /* variable length codes for the structure dct_dc_size for intra blocks */ lookup_t pppl_dct_dc_size[2][2][32]; /* structure to store the tables B14 & B15 */ dct_lookup_t * pppl_dct_coef[2][65536]; #ifdef STATS /* Statistics */ count_t c_loops; /* number of loops */ count_t c_idle_loops; /* number of idle loops */ count_t c_sequences; /* number of sequences */ count_t c_pictures; /* number of pictures read */ count_t c_i_pictures; /* number of I pictures read */ count_t c_p_pictures; /* number of P pictures read */ count_t c_b_pictures; /* number of B pictures read */ count_t c_decoded_pictures; /* number of pictures decoded */ count_t c_decoded_i_pictures; /* number of I pictures decoded */ count_t c_decoded_p_pictures; /* number of P pictures decoded */ count_t c_decoded_b_pictures; /* number of B pictures decoded */ #endif } vpar_thread_t; /* Chroma types */ #define CHROMA_420 1 #define CHROMA_422 2 #define CHROMA_444 3 /***************************************************************************** * Prototypes *****************************************************************************/ /* Thread management functions */ vpar_thread_t * vpar_CreateThread ( /* video_cfg_t *p_cfg, */ input_thread_t *p_input /*, vout_thread_t *p_vout, int *pi_status */ ); void vpar_DestroyThread ( vpar_thread_t *p_vpar /*, int *pi_status */ ); /* Time management functions */ /* ?? */ /* Dynamic thread settings */ /* ?? */ /***************************************************************************** * LoadQuantizerScale ***************************************************************************** * Quantizer scale factor (ISO/IEC 13818-2 7.4.2.2) *****************************************************************************/ static __inline__ void LoadQuantizerScale( struct vpar_thread_s * p_vpar ) { /* Quantization coefficient table */ static u8 ppi_quantizer_scale[3][32] = { /* MPEG-2 */ { /* q_scale_type */ /* linear */ 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30, 32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62 }, { /* non-linear */ 0, 1, 2, 3, 4, 5, 6, 7, 8, 10,12,14,16,18,20, 22, 24,28,32,36,40,44,48,52,56,64,72,80,88,96,104,112 }, /* MPEG-1 */ { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 } }; p_vpar->slice.i_quantizer_scale = ppi_quantizer_scale [(!p_vpar->sequence.b_mpeg2 << 1) | p_vpar->picture.b_q_scale_type] [GetBits( &p_vpar->bit_stream, 5 )]; }