Documentation/video4linux/cx2341x/fw-encoder-api.txt

   1 Encoder firmware API description
   2 ================================
   3
   4 -------------------------------------------------------------------------------
   5
   6 Name    CX2341X_ENC_PING_FW
   7 Enum    128/0x80
   8 Description
   9         Does nothing. Can be used to check if the firmware is responding.
  10
  11 -------------------------------------------------------------------------------
  12
  13 Name    CX2341X_ENC_START_CAPTURE
  14 Enum    129/0x81
  15 Description
  16         Commences the capture of video, audio and/or VBI data. All encoding
  17         parameters must be initialized prior to this API call. Captures frames
  18         continuously or until a predefined number of frames have been captured.
  19 Param[0]
  20         Capture stream type:
  21             0=MPEG
  22             1=Raw
  23             2=Raw passthrough
  24             3=VBI
  25
  26 Param[1]
  27         Bitmask:
  28             Bit 0 when set, captures YUV
  29             Bit 1 when set, captures PCM audio
  30             Bit 2 when set, captures VBI (same as param[0]=3)
  31             Bit 3 when set, the capture destination is the decoder
  32                 (same as param[0]=2)
  33             Bit 4 when set, the capture destination is the host
  34         Note: this parameter is only meaningful for RAW capture type.
  35
  36 -------------------------------------------------------------------------------
  37
  38 Name    CX2341X_ENC_STOP_CAPTURE
  39 Enum    130/0x82
  40 Description
  41         Ends a capture in progress
  42 Param[0]
  43         0=stop at end of GOP (generates IRQ)
  44         1=stop immediate (no IRQ)
  45 Param[1]
  46         Stream type to stop, see param[0] of API 0x81
  47 Param[2]
  48         Subtype, see param[1] of API 0x81
  49
  50 -------------------------------------------------------------------------------
  51
  52 Name    CX2341X_ENC_SET_AUDIO_ID
  53 Enum    137/0x89
  54 Description
  55         Assigns the transport stream ID of the encoded audio stream
  56 Param[0]
  57         Audio Stream ID
  58
  59 -------------------------------------------------------------------------------
  60
  61 Name    CX2341X_ENC_SET_VIDEO_ID
  62 Enum    139/0x8B
  63 Description
  64         Set video transport stream ID
  65 Param[0]
  66         Video stream ID
  67
  68 -------------------------------------------------------------------------------
  69
  70 Name    CX2341X_ENC_SET_PCR_ID
  71 Enum    141/0x8D
  72 Description
  73         Assigns the transport stream ID for PCR packets
  74 Param[0]
  75         PCR Stream ID
  76
  77 -------------------------------------------------------------------------------
  78
  79 Name    CX2341X_ENC_SET_FRAME_RATE
  80 Enum    143/0x8F
  81 Description
  82         Set video frames per second. Change occurs at start of new GOP.
  83 Param[0]
  84         0=30fps
  85         1=25fps
  86
  87 -------------------------------------------------------------------------------
  88
  89 Name    CX2341X_ENC_SET_FRAME_SIZE
  90 Enum    145/0x91
  91 Description
  92         Select video stream encoding resolution.
  93 Param[0]
  94         Height in lines. Default 480
  95 Param[1]
  96         Width in pixels. Default 720
  97
  98 -------------------------------------------------------------------------------
  99
 100 Name    CX2341X_ENC_SET_BIT_RATE
 101 Enum    149/0x95
 102 Description
 103         Assign average video stream bitrate. Note on the last three params:
 104         Param[3] and [4] seem to be always 0, param [5] doesn't seem to be used.
 105 Param[0]
 106         0=variable bitrate, 1=constant bitrate
 107 Param[1]
 108         bitrate in bits per second
 109 Param[2]
 110         peak bitrate in bits per second, divided by 400
 111 Param[3]
 112         Mux bitrate in bits per second, divided by 400. May be 0 (default).
 113 Param[4]
 114         Rate Control VBR Padding
 115 Param[5]
 116         VBV Buffer used by encoder
 117
 118 -------------------------------------------------------------------------------
 119
 120 Name    CX2341X_ENC_SET_GOP_PROPERTIES
 121 Enum    151/0x97
 122 Description
 123         Setup the GOP structure
 124 Param[0]
 125         GOP size (maximum is 34)
 126 Param[1]
 127         Number of B frames between the I and P frame, plus 1.
 128         For example: IBBPBBPBBPBB --> GOP size: 12, number of B frames: 2+1 = 3
 129         Note that GOP size must be a multiple of (B-frames + 1).
 130
 131 -------------------------------------------------------------------------------
 132
 133 Name    CX2341X_ENC_SET_ASPECT_RATIO
 134 Enum    153/0x99
 135 Description
 136         Sets the encoding aspect ratio. Changes in the aspect ratio take effect
 137         at the start of the next GOP.
 138 Param[0]
 139         '0000' forbidden
 140         '0001' 1:1 square
 141         '0010' 4:3
 142         '0011' 16:9
 143         '0100' 2.21:1
 144         '0101' reserved
 145          ....
 146         '1111' reserved
 147
 148 -------------------------------------------------------------------------------
 149
 150 Name    CX2341X_ENC_SET_DNR_FILTER_MODE
 151 Enum    155/0x9B
 152 Description
 153         Assign Dynamic Noise Reduction operating mode
 154 Param[0]
 155         Bit0: Spatial filter, set=auto, clear=manual
 156         Bit1: Temporal filter, set=auto, clear=manual
 157 Param[1]
 158         Median filter:
 159             0=Disabled
 160             1=Horizontal
 161             2=Vertical
 162             3=Horiz/Vert
 163             4=Diagonal
 164
 165 -------------------------------------------------------------------------------
 166
 167 Name    CX2341X_ENC_SET_DNR_FILTER_PROPS
 168 Enum    157/0x9D
 169 Description
 170         These Dynamic Noise Reduction filter values are only meaningful when
 171         the respective filter is set to "manual" (See API 0x9B)
 172 Param[0]
 173         Spatial filter: default 0, range 0:15
 174 Param[1]
 175         Temporal filter: default 0, range 0:31
 176
 177 -------------------------------------------------------------------------------
 178
 179 Name    CX2341X_ENC_SET_CORING_LEVELS
 180 Enum    159/0x9F
 181 Description
 182         Assign Dynamic Noise Reduction median filter properties.
 183 Param[0]
 184         Threshold above which the luminance median filter is enabled.
 185         Default: 0, range 0:255
 186 Param[1]
 187         Threshold below which the luminance median filter is enabled.
 188         Default: 255, range 0:255
 189 Param[2]
 190         Threshold above which the chrominance median filter is enabled.
 191         Default: 0, range 0:255
 192 Param[3]
 193         Threshold below which the chrominance median filter is enabled.
 194         Default: 255, range 0:255
 195
 196 -------------------------------------------------------------------------------
 197
 198 Name    CX2341X_ENC_SET_SPATIAL_FILTER_TYPE
 199 Enum    161/0xA1
 200 Description
 201         Assign spatial prefilter parameters
 202 Param[0]
 203         Luminance filter
 204             0=Off
 205             1=1D Horizontal
 206             2=1D Vertical
 207             3=2D H/V Separable (default)
 208             4=2D Symmetric non-separable
 209 Param[1]
 210         Chrominance filter
 211             0=Off
 212             1=1D Horizontal (default)
 213
 214 -------------------------------------------------------------------------------
 215
 216 Name    CX2341X_ENC_SET_3_2_PULLDOWN
 217 Enum    177/0xB1
 218 Description
 219         3:2 pulldown properties
 220 Param[0]
 221         0=enabled
 222         1=disabled
 223
 224 -------------------------------------------------------------------------------
 225
 226 Name    CX2341X_ENC_SET_VBI_LINE
 227 Enum    183/0xB7
 228 Description
 229         Selects VBI line number.
 230 Param[0]
 231         Bits 0:4        line number
 232         Bit  31         0=top_field, 1=bottom_field
 233         Bits 0:31       all set specifies "all lines"
 234 Param[1]
 235         VBI line information features: 0=disabled, 1=enabled
 236 Param[2]
 237         Slicing: 0=None, 1=Closed Caption
 238         Almost certainly not implemented. Set to 0.
 239 Param[3]
 240         Luminance samples in this line.
 241         Almost certainly not implemented. Set to 0.
 242 Param[4]
 243         Chrominance samples in this line
 244         Almost certainly not implemented. Set to 0.
 245
 246 -------------------------------------------------------------------------------
 247
 248 Name    CX2341X_ENC_SET_STREAM_TYPE
 249 Enum    185/0xB9
 250 Description
 251         Assign stream type
 252         Note: Transport stream is not working in recent firmwares.
 253         And in older firmwares the timestamps in the TS seem to be
 254         unreliable.
 255 Param[0]
 256          0=Program stream
 257          1=Transport stream
 258          2=MPEG1 stream
 259          3=PES A/V stream
 260          5=PES Video stream
 261          7=PES Audio stream
 262         10=DVD stream
 263         11=VCD stream
 264         12=SVCD stream
 265         13=DVD_S1 stream
 266         14=DVD_S2 stream
 267
 268 -------------------------------------------------------------------------------
 269
 270 Name    CX2341X_ENC_SET_OUTPUT_PORT
 271 Enum    187/0xBB
 272 Description
 273         Assign stream output port. Normally 0 when the data is copied through
 274         the PCI bus (DMA), and 1 when the data is streamed to another chip
 275         (pvrusb and cx88-blackbird).
 276 Param[0]
 277         0=Memory (default)
 278         1=Streaming
 279         2=Serial
 280 Param[1]
 281         Unknown, but leaving this to 0 seems to work best. Indications are that
 282         this might have to do with USB support, although passing anything but 0
 283         onl breaks things.
 284
 285 -------------------------------------------------------------------------------
 286
 287 Name    CX2341X_ENC_SET_AUDIO_PROPERTIES
 288 Enum    189/0xBD
 289 Description
 290         Set audio stream properties, may be called while encoding is in progress.
 291         Note: all bitfields are consistent with ISO11172 documentation except
 292         bits 2:3 which ISO docs define as:
 293                 '11' Layer I
 294                 '10' Layer II
 295                 '01' Layer III
 296                 '00' Undefined
 297         This discrepancy may indicate a possible error in the documentation.
 298         Testing indicated that only Layer II is actually working, and that
 299         the minimum bitrate should be 192 kbps.
 300 Param[0]
 301         Bitmask:
 302            0:1  '00' 44.1Khz
 303                 '01' 48Khz
 304                 '10' 32Khz
 305                 '11' reserved
 306
 307            2:3  '01'=Layer I
 308                 '10'=Layer II
 309
 310            4:7  Bitrate:
 311                      Index | Layer I     | Layer II
 312                      ------+-------------+------------
 313                     '0000' | free format | free format
 314                     '0001' |  32 kbit/s  |  32 kbit/s
 315                     '0010' |  64 kbit/s  |  48 kbit/s
 316                     '0011' |  96 kbit/s  |  56 kbit/s
 317                     '0100' | 128 kbit/s  |  64 kbit/s
 318                     '0101' | 160 kbit/s  |  80 kbit/s
 319                     '0110' | 192 kbit/s  |  96 kbit/s
 320                     '0111' | 224 kbit/s  | 112 kbit/s
 321                     '1000' | 256 kbit/s  | 128 kbit/s
 322                     '1001' | 288 kbit/s  | 160 kbit/s
 323                     '1010' | 320 kbit/s  | 192 kbit/s
 324                     '1011' | 352 kbit/s  | 224 kbit/s
 325                     '1100' | 384 kbit/s  | 256 kbit/s
 326                     '1101' | 416 kbit/s  | 320 kbit/s
 327                     '1110' | 448 kbit/s  | 384 kbit/s
 328                 Note: For Layer II, not all combinations of total bitrate
 329                 and mode are allowed. See ISO11172-3 3-Annex B, Table 3-B.2
 330
 331            8:9  '00'=Stereo
 332                 '01'=JointStereo
 333                 '10'=Dual
 334                 '11'=Mono
 335                 Note: testing seems to indicate that Mono and possibly
 336                 JointStereo are not working (default to stereo).
 337                 Dual does work, though.
 338
 339           10:11 Mode Extension used in joint_stereo mode.
 340                 In Layer I and II they indicate which subbands are in
 341                 intensity_stereo. All other subbands are coded in stereo.
 342                     '00' subbands 4-31 in intensity_stereo, bound==4
 343                     '01' subbands 8-31 in intensity_stereo, bound==8
 344                     '10' subbands 12-31 in intensity_stereo, bound==12
 345                     '11' subbands 16-31 in intensity_stereo, bound==16
 346
 347           12:13 Emphasis:
 348                     '00' None
 349                     '01' 50/15uS
 350                     '10' reserved
 351                     '11' CCITT J.17
 352
 353           14    CRC:
 354                     '0' off
 355                     '1' on
 356
 357           15    Copyright:
 358                     '0' off
 359                     '1' on
 360
 361           16    Generation:
 362                     '0' copy
 363                     '1' original
 364
 365 -------------------------------------------------------------------------------
 366
 367 Name    CX2341X_ENC_HALT_FW
 368 Enum    195/0xC3
 369 Description
 370         The firmware is halted and no further API calls are serviced until the
 371         firmware is uploaded again.
 372
 373 -------------------------------------------------------------------------------
 374
 375 Name    CX2341X_ENC_GET_VERSION
 376 Enum    196/0xC4
 377 Description
 378         Returns the version of the encoder firmware.
 379 Result[0]
 380         Version bitmask:
 381             Bits  0:15 build
 382             Bits 16:23 minor
 383             Bits 24:31 major
 384
 385 -------------------------------------------------------------------------------
 386
 387 Name    CX2341X_ENC_SET_GOP_CLOSURE
 388 Enum    197/0xC5
 389 Description
 390         Assigns the GOP open/close property.
 391 Param[0]
 392         0=Open
 393         1=Closed
 394
 395 -------------------------------------------------------------------------------
 396
 397 Name    CX2341X_ENC_GET_SEQ_END
 398 Enum    198/0xC6
 399 Description
 400         Obtains the sequence end code of the encoder's buffer. When a capture
 401         is started a number of interrupts are still generated, the last of
 402         which will have Result[0] set to 1 and Result[1] will contain the size
 403         of the buffer.
 404 Result[0]
 405         State of the transfer (1 if last buffer)
 406 Result[1]
 407         If Result[0] is 1, this contains the size of the last buffer, undefined
 408         otherwise.
 409
 410 -------------------------------------------------------------------------------
 411
 412 Name    CX2341X_ENC_SET_PGM_INDEX_INFO
 413 Enum    199/0xC7
 414 Description
 415         Sets the Program Index Information.
 416 Param[0]
 417         Picture Mask:
 418             0=No index capture
 419             1=I frames
 420             3=I,P frames
 421             7=I,P,B frames
 422 Param[1]
 423         Elements requested (up to 400)
 424 Result[0]
 425         Offset in SDF memory of the table.
 426 Result[1]
 427         Number of allocated elements up to a maximum of Param[1]
 428
 429 -------------------------------------------------------------------------------
 430
 431 Name    CX2341X_ENC_SET_VBI_CONFIG
 432 Enum    200/0xC8
 433 Description
 434         Configure VBI settings
 435 Param[0]
 436         Bitmap:
 437             0    Mode '0' Sliced, '1' Raw
 438             1:3  Insertion:
 439                      '000' insert in extension & user data
 440                      '001' insert in private packets
 441                      '010' separate stream and user data
 442                      '111' separate stream and private data
 443             8:15 Stream ID (normally 0xBD)
 444 Param[1]
 445         Frames per interrupt (max 8). Only valid in raw mode.
 446 Param[2]
 447         Total raw VBI frames. Only valid in raw mode.
 448 Param[3]
 449         Start codes
 450 Param[4]
 451         Stop codes
 452 Param[5]
 453         Lines per frame
 454 Param[6]
 455         Byte per line
 456 Result[0]
 457         Observed frames per interrupt in raw mode only. Rage 1 to Param[1]
 458 Result[1]
 459         Observed number of frames in raw mode. Range 1 to Param[2]
 460 Result[2]
 461         Memory offset to start or raw VBI data
 462
 463 -------------------------------------------------------------------------------
 464
 465 Name    CX2341X_ENC_SET_DMA_BLOCK_SIZE
 466 Enum    201/0xC9
 467 Description
 468         Set DMA transfer block size
 469 Param[0]
 470         DMA transfer block size in bytes or frames. When unit is bytes,
 471         supported block sizes are 2^7, 2^8 and 2^9 bytes.
 472 Param[1]
 473         Unit: 0=bytes, 1=frames
 474
 475 -------------------------------------------------------------------------------
 476
 477 Name    CX2341X_ENC_GET_PREV_DMA_INFO_MB_10
 478 Enum    202/0xCA
 479 Description
 480         Returns information on the previous DMA transfer in conjunction with
 481         bit 27 of the interrupt mask. Uses mailbox 10.
 482 Result[0]
 483         Type of stream
 484 Result[1]
 485         Address Offset
 486 Result[2]
 487         Maximum size of transfer
 488
 489 -------------------------------------------------------------------------------
 490
 491 Name    CX2341X_ENC_GET_PREV_DMA_INFO_MB_9
 492 Enum    203/0xCB
 493 Description
 494         Returns information on the previous DMA transfer in conjunction with
 495         bit 27 of the interrupt mask. Uses mailbox 9.
 496 Result[0]
 497         Status bits:
 498             Bit 0 set indicates transfer complete
 499             Bit 2 set indicates transfer error
 500             Bit 4 set indicates linked list error
 501 Result[1]
 502         DMA type
 503 Result[2]
 504         Presentation Time Stamp bits 0..31
 505 Result[3]
 506         Presentation Time Stamp bit 32
 507
 508 -------------------------------------------------------------------------------
 509
 510 Name    CX2341X_ENC_SCHED_DMA_TO_HOST
 511 Enum    204/0xCC
 512 Description
 513         Setup DMA to host operation
 514 Param[0]
 515         Memory address of link list
 516 Param[1]
 517         Length of link list (wtf: what units ???)
 518 Param[2]
 519         DMA type (0=MPEG)
 520
 521 -------------------------------------------------------------------------------
 522
 523 Name    CX2341X_ENC_INITIALIZE_INPUT
 524 Enum    205/0xCD
 525 Description
 526         Initializes the video input
 527
 528 -------------------------------------------------------------------------------
 529
 530 Name    CX2341X_ENC_SET_FRAME_DROP_RATE
 531 Enum    208/0xD0
 532 Description
 533         For each frame captured, skip specified number of frames.
 534 Param[0]
 535         Number of frames to skip
 536
 537 -------------------------------------------------------------------------------
 538
 539 Name    CX2341X_ENC_PAUSE_ENCODER
 540 Enum    210/0xD2
 541 Description
 542         During a pause condition, all frames are dropped instead of being encoded.
 543 Param[0]
 544         0=Pause encoding
 545         1=Continue encoding
 546
 547 -------------------------------------------------------------------------------
 548
 549 Name    CX2341X_ENC_REFRESH_INPUT
 550 Enum    211/0xD3
 551 Description
 552         Refreshes the video input
 553
 554 -------------------------------------------------------------------------------
 555
 556 Name    CX2341X_ENC_SET_COPYRIGHT
 557 Enum    212/0xD4
 558 Description
 559         Sets stream copyright property
 560 Param[0]
 561         0=Stream is not copyrighted
 562         1=Stream is copyrighted
 563
 564 -------------------------------------------------------------------------------
 565
 566 Name    CX2341X_ENC_SET_EVENT_NOTIFICATION
 567 Enum    213/0xD5
 568 Description
 569         Setup firmware to notify the host about a particular event. Host must
 570         unmask the interrupt bit.
 571 Param[0]
 572         Event (0=refresh encoder input)
 573 Param[1]
 574         Notification 0=disabled 1=enabled
 575 Param[2]
 576         Interrupt bit
 577 Param[3]
 578         Mailbox slot, -1 if no mailbox required.
 579
 580 -------------------------------------------------------------------------------
 581
 582 Name    CX2341X_ENC_SET_NUM_VSYNC_LINES
 583 Enum    214/0xD6
 584 Description
 585         Depending on the analog video decoder used, this assigns the number
 586         of lines for field 1 and 2.
 587 Param[0]
 588         Field 1 number of lines:
 589             0x00EF for SAA7114
 590             0x00F0 for SAA7115
 591             0x0105 for Micronas
 592 Param[1]
 593         Field 2 number of lines:
 594             0x00EF for SAA7114
 595             0x00F0 for SAA7115
 596             0x0106 for Micronas
 597
 598 -------------------------------------------------------------------------------
 599
 600 Name    CX2341X_ENC_SET_PLACEHOLDER
 601 Enum    215/0xD7
 602 Description
 603         Provides a mechanism of inserting custom user data in the MPEG stream.
 604 Param[0]
 605         0=extension & user data
 606         1=private packet with stream ID 0xBD
 607 Param[1]
 608         Rate at which to insert data, in units of frames (for private packet)
 609         or GOPs (for ext. & user data)
 610 Param[2]
 611         Number of data DWORDs (below) to insert
 612 Param[3]
 613         Custom data 0
 614 Param[4]
 615         Custom data 1
 616 Param[5]
 617         Custom data 2
 618 Param[6]
 619         Custom data 3
 620 Param[7]
 621         Custom data 4
 622 Param[8]
 623         Custom data 5
 624 Param[9]
 625         Custom data 6
 626 Param[10]
 627         Custom data 7
 628 Param[11]
 629         Custom data 8
 630
 631 -------------------------------------------------------------------------------
 632
 633 Name    CX2341X_ENC_MUTE_VIDEO
 634 Enum    217/0xD9
 635 Description
 636         Video muting
 637 Param[0]
 638         Bit usage:
 639          0      '0'=video not muted
 640                 '1'=video muted, creates frames with the YUV color defined below
 641          1:7    Unused
 642          8:15   V chrominance information
 643         16:23   U chrominance information
 644         24:31   Y luminance information
 645
 646 -------------------------------------------------------------------------------
 647
 648 Name    CX2341X_ENC_MUTE_AUDIO
 649 Enum    218/0xDA
 650 Description
 651         Audio muting
 652 Param[0]
 653         0=audio not muted
 654         1=audio muted (produces silent mpeg audio stream)
 655
 656 -------------------------------------------------------------------------------
 657
 658 Name    CX2341X_ENC_UNKNOWN
 659 Enum    219/0xDB
 660 Description
 661         Unknown API, it's used by Hauppauge though.
 662 Param[0]
 663         0 This is the value Hauppauge uses, Unknown what it means.
 664
 665 -------------------------------------------------------------------------------
 666
 667 Name    CX2341X_ENC_MISC
 668 Enum    220/0xDC
 669 Description
 670         Miscellaneous actions. Not known for 100% what it does. It's really a
 671         sort of ioctl call. The first parameter is a command number, the second
 672         the value.
 673 Param[0]
 674         Command number:
 675          1=set initial SCR value when starting encoding.
 676          2=set quality mode (apparently some test setting).
 677          3=setup advanced VIM protection handling (supposedly only for the cx23416
 678            for raw YUV).
 679            Actually it looks like this should be 0 for saa7114/5 based card and 1
 680            for cx25840 based cards.
 681          4=generate artificial PTS timestamps
 682          5=USB flush mode
 683          6=something to do with the quantization matrix
 684          7=set navigation pack insertion for DVD
 685          8=enable scene change detection (seems to be a failure)
 686          9=set history parameters of the video input module
 687         10=set input field order of VIM
 688         11=set quantization matrix
 689         12=reset audio interface
 690         13=set audio volume delay
 691         14=set audio delay
 692
 693 Param[1]
 694         Command value.