git.sesse.net Git - vlc/blob - include/video_parser.h

   1 /*******************************************************************************
   2  * video_parser.h : video parser thread
   3  * (c)1999 VideoLAN
   4  *******************************************************************************
   5  *******************************************************************************
   6  * Requires:
   7  *  "config.h"
   8  *  "common.h"
   9  *  "mtime.h"
  10  *  "vlc_thread.h"
  11  *  "input.h"
  12  *  "video.h"
  13  *  "video_output.h"
  14  *  "decoder_fifo.h"
  15  *  "video_fifo.h"
  16  *******************************************************************************/
  17
  18 /*******************************************************************************
  19  * sequence_t : sequence descriptor
  20  *******************************************************************************
  21  * ??
  22  *******************************************************************************/
  23 typedef struct sequence_s
  24 {
  25     u16                 i_height, i_width;
  26     u16                 i_mb_height, i_mb_width;
  27     unsigned int        i_aspect_ratio;
  28     double              d_frame_rate;
  29     unsigned int        i_chroma_format;
  30     boolean_t           b_mpeg2;
  31     boolean_t           b_progressive;
  32
  33     /* Parser context */
  34     picture_t *             p_forward, p_backward;
  35     pel_lookup_table_t *    p_frame_lum_lookup, p_field_lum_lookup;
  36     pel_lookup_table_t *    p_frame_chroma_lookup, p_field_chroma_lookup;
  37     quant_matrix_t          intra_quant, nonintra_quant;
  38     quant_matrix_t          chroma_intra_quant, chroma_nonintra_quant;
  39 } sequence_t;
  40
  41 /*******************************************************************************
  42  * vpar_thread_t: video parser thread descriptor
  43  *******************************************************************************
  44  * ??
  45  *******************************************************************************/
  46 typedef struct vpar_thread_s
  47 {
  48     /* Thread properties and locks */
  49     boolean_t           b_die;                                   /* `die' flag */
  50     boolean_t           b_run;                                   /* `run' flag */
  51     boolean_t           b_error;                               /* `error' flag */
  52     boolean_t           b_active;                             /* `active' flag */
  53     vlc_thread_t        thread_id;                  /* id for thread functions */
  54
  55     /* Thread configuration */
  56     /* ?? */
  57  /*??*/
  58 //    int *pi_status;
  59
  60
  61     /* Input properties */
  62     decoder_fifo_t      fifo;                                /* PES input fifo */
  63
  64     /* The bit stream structure handles the PES stream at the bit level */
  65     bit_stream_t        bit_stream;
  66
  67     /* Output properties */
  68     vout_thread_t *     p_vout;                         /* video output thread */
  69     int                 i_stream;                           /* video stream id */
  70
  71     /* Decoder properties */
  72     struct vdec_thread_s *      p_vdec[MAX_VDEC];
  73     video_fifo_t                vfifo;
  74     video_buffer_t              vbuffer;
  75
  76     /* Parser properties */
  77     sequence_t          sequence;
  78
  79 #ifdef STATS
  80     /* Statistics */
  81     count_t         c_loops;                               /* number of loops */
  82     count_t         c_idle_loops;                     /* number of idle loops */
  83     count_t         c_sequences;                       /* number of sequences */
  84     count_t         c_pictures;                    /* number of pictures read */
  85     count_t         c_i_pictures;                /* number of I pictures read */
  86     count_t         c_p_pictures;                /* number of P pictures read */
  87     count_t         c_b_pictures;                /* number of B pictures read */
  88     count_t         c_decoded_pictures;         /* number of pictures decoded */
  89     count_t         c_decoded_i_pictures;     /* number of I pictures decoded */
  90     count_t         c_decoded_p_pictures;     /* number of P pictures decoded */
  91     count_t         c_decoded_b_pictures;     /* number of B pictures decoded */
  92 #endif
  93 } vpar_thread_t;
  94
  95 /*******************************************************************************
  96  * Standard start codes
  97  *******************************************************************************/
  98 #define PICTURE_START_CODE      0x100
  99 #define SLICE_START_CODE_MIN    0x101
 100 #define SLICE_START_CODE_MAX    0x1AF
 101 #define USER_DATA_START_CODE    0x1B2
 102 #define SEQUENCE_HEADER_CODE    0x1B3
 103 #define SEQUENCE_ERROR_CODE     0x1B4
 104 #define EXTENSION_START_CODE    0x1B5
 105 #define SEQUENCE_END_CODE       0x1B7
 106 #define GROUP_START_CODE        0x1B8
 107
 108 /* extension start code IDs */
 109
 110 #define SEQUENCE_EXTENSION_ID                    1
 111 #define SEQUENCE_DISPLAY_EXTENSION_ID            2
 112 #define QUANT_MATRIX_EXTENSION_ID                3
 113 #define COPYRIGHT_EXTENSION_ID                   4
 114 #define SEQUENCE_SCALABLE_EXTENSION_ID           5
 115 #define PICTURE_DISPLAY_EXTENSION_ID             7
 116 #define PICTURE_CODING_EXTENSION_ID              8
 117 #define PICTURE_SPATIAL_SCALABLE_EXTENSION_ID    9
 118 #define PICTURE_TEMPORAL_SCALABLE_EXTENSION_ID  10
 119
 120 /*******************************************************************************
 121  * Prototypes
 122  *******************************************************************************/
 123
 124 /* Thread management functions */
 125 vpar_thread_t * vpar_CreateThread       ( /* video_cfg_t *p_cfg, */ input_thread_t *p_input /*,
 126                                           vout_thread_t *p_vout, int *pi_status */ );
 127 void            vpar_DestroyThread      ( vpar_thread_t *p_vpar /*, int *pi_status */ );
 128
 129 /* Time management functions */
 130 /* ?? */
 131
 132 /* Dynamic thread settings */
 133 /* ?? */