1 Encoder firmware API description
2 ================================
4 -------------------------------------------------------------------------------
6 Name CX2341X_ENC_PING_FW
9 Does nothing. Can be used to check if the firmware is responding.
11 -------------------------------------------------------------------------------
13 Name CX2341X_ENC_START_CAPTURE
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.
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
33 Bit 4 when set, the capture destination is the host
34 Note: this parameter is only meaningful for RAW capture type.
36 -------------------------------------------------------------------------------
38 Name CX2341X_ENC_STOP_CAPTURE
41 Ends a capture in progress
43 0=stop at end of GOP (generates IRQ)
44 1=stop immediate (no IRQ)
46 Stream type to stop, see param[0] of API 0x81
48 Subtype, see param[1] of API 0x81
50 -------------------------------------------------------------------------------
52 Name CX2341X_ENC_SET_AUDIO_ID
55 Assigns the transport stream ID of the encoded audio stream
59 -------------------------------------------------------------------------------
61 Name CX2341X_ENC_SET_VIDEO_ID
64 Set video transport stream ID
68 -------------------------------------------------------------------------------
70 Name CX2341X_ENC_SET_PCR_ID
73 Assigns the transport stream ID for PCR packets
77 -------------------------------------------------------------------------------
79 Name CX2341X_ENC_SET_FRAME_RATE
82 Set video frames per second. Change occurs at start of new GOP.
87 -------------------------------------------------------------------------------
89 Name CX2341X_ENC_SET_FRAME_SIZE
92 Select video stream encoding resolution.
94 Height in lines. Default 480
96 Width in pixels. Default 720
98 -------------------------------------------------------------------------------
100 Name CX2341X_ENC_SET_BIT_RATE
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.
106 0=variable bitrate, 1=constant bitrate
108 bitrate in bits per second
110 peak bitrate in bits per second, divided by 400
112 Mux bitrate in bits per second, divided by 400. May be 0 (default).
114 Rate Control VBR Padding
116 VBV Buffer used by encoder
118 -------------------------------------------------------------------------------
120 Name CX2341X_ENC_SET_GOP_PROPERTIES
123 Setup the GOP structure
125 GOP size (maximum is 34)
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).
131 -------------------------------------------------------------------------------
133 Name CX2341X_ENC_SET_ASPECT_RATIO
136 Sets the encoding aspect ratio. Changes in the aspect ratio take effect
137 at the start of the next GOP.
148 -------------------------------------------------------------------------------
150 Name CX2341X_ENC_SET_DNR_FILTER_MODE
153 Assign Dynamic Noise Reduction operating mode
155 Bit0: Spatial filter, set=auto, clear=manual
156 Bit1: Temporal filter, set=auto, clear=manual
165 -------------------------------------------------------------------------------
167 Name CX2341X_ENC_SET_DNR_FILTER_PROPS
170 These Dynamic Noise Reduction filter values are only meaningful when
171 the respective filter is set to "manual" (See API 0x9B)
173 Spatial filter: default 0, range 0:15
175 Temporal filter: default 0, range 0:31
177 -------------------------------------------------------------------------------
179 Name CX2341X_ENC_SET_CORING_LEVELS
182 Assign Dynamic Noise Reduction median filter properties.
184 Threshold above which the luminance median filter is enabled.
185 Default: 0, range 0:255
187 Threshold below which the luminance median filter is enabled.
188 Default: 255, range 0:255
190 Threshold above which the chrominance median filter is enabled.
191 Default: 0, range 0:255
193 Threshold below which the chrominance median filter is enabled.
194 Default: 255, range 0:255
196 -------------------------------------------------------------------------------
198 Name CX2341X_ENC_SET_SPATIAL_FILTER_TYPE
201 Assign spatial prefilter parameters
207 3=2D H/V Separable (default)
208 4=2D Symmetric non-separable
212 1=1D Horizontal (default)
214 -------------------------------------------------------------------------------
216 Name CX2341X_ENC_SET_3_2_PULLDOWN
219 3:2 pulldown properties
224 -------------------------------------------------------------------------------
226 Name CX2341X_ENC_SET_VBI_LINE
229 Selects VBI line number.
232 Bit 31 0=top_field, 1=bottom_field
233 Bits 0:31 all set specifies "all lines"
235 VBI line information features: 0=disabled, 1=enabled
237 Slicing: 0=None, 1=Closed Caption
238 Almost certainly not implemented. Set to 0.
240 Luminance samples in this line.
241 Almost certainly not implemented. Set to 0.
243 Chrominance samples in this line
244 Almost certainly not implemented. Set to 0.
246 -------------------------------------------------------------------------------
248 Name CX2341X_ENC_SET_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
268 -------------------------------------------------------------------------------
270 Name CX2341X_ENC_SET_OUTPUT_PORT
273 Assign stream output port (not recommended you change setting from default)
279 -------------------------------------------------------------------------------
281 Name CX2341X_ENC_SET_AUDIO_PROPERTIES
284 Set audio stream properties, may be called while encoding is in progress.
285 Note: all bitfields are consistent with ISO11172 documentation except
286 bits 2:3 which ISO docs define as:
291 This discrepancy may indicate a possible error in the documentation.
292 Testing indicated that only Layer II is actually working, and that
293 the minimum bitrate should be 192 kbps.
305 Index | Layer I | Layer II
306 ------+-------------+------------
307 '0000' | free format | free format
308 '0001' | 32 kbit/s | 32 kbit/s
309 '0010' | 64 kbit/s | 48 kbit/s
310 '0011' | 96 kbit/s | 56 kbit/s
311 '0100' | 128 kbit/s | 64 kbit/s
312 '0101' | 160 kbit/s | 80 kbit/s
313 '0110' | 192 kbit/s | 96 kbit/s
314 '0111' | 224 kbit/s | 112 kbit/s
315 '1000' | 256 kbit/s | 128 kbit/s
316 '1001' | 288 kbit/s | 160 kbit/s
317 '1010' | 320 kbit/s | 192 kbit/s
318 '1011' | 352 kbit/s | 224 kbit/s
319 '1100' | 384 kbit/s | 256 kbit/s
320 '1101' | 416 kbit/s | 320 kbit/s
321 '1110' | 448 kbit/s | 384 kbit/s
322 Note: For Layer II, not all combinations of total bitrate
323 and mode are allowed. See ISO11172-3 3-Annex B, Table 3-B.2
329 Note: testing seems to indicate that Mono and possibly
330 JointStereo are not working (default to stereo).
331 Dual does work, though.
333 10:11 Mode Extension used in joint_stereo mode.
334 In Layer I and II they indicate which subbands are in
335 intensity_stereo. All other subbands are coded in stereo.
336 '00' subbands 4-31 in intensity_stereo, bound==4
337 '01' subbands 8-31 in intensity_stereo, bound==8
338 '10' subbands 12-31 in intensity_stereo, bound==12
339 '11' subbands 16-31 in intensity_stereo, bound==16
359 -------------------------------------------------------------------------------
361 Name CX2341X_ENC_HALT_FW
364 The firmware is halted and no further API calls are serviced until the
365 firmware is uploaded again.
367 -------------------------------------------------------------------------------
369 Name CX2341X_ENC_GET_VERSION
372 Returns the version of the encoder firmware.
379 -------------------------------------------------------------------------------
381 Name CX2341X_ENC_SET_GOP_CLOSURE
384 Assigns the GOP open/close property.
389 -------------------------------------------------------------------------------
391 Name CX2341X_ENC_GET_SEQ_END
394 Obtains the sequence end code of the encoder's buffer. When a capture
395 is started a number of interrupts are still generated, the last of
396 which will have Result[0] set to 1 and Result[1] will contain the size
399 State of the transfer (1 if last buffer)
401 If Result[0] is 1, this contains the size of the last buffer, undefined
404 -------------------------------------------------------------------------------
406 Name CX2341X_ENC_SET_PGM_INDEX_INFO
409 Sets the Program Index Information.
417 Elements requested (up to 400)
419 Offset in SDF memory of the table.
421 Number of allocated elements up to a maximum of Param[1]
423 -------------------------------------------------------------------------------
425 Name CX2341X_ENC_SET_VBI_CONFIG
428 Configure VBI settings
431 0 Mode '0' Sliced, '1' Raw
433 '000' insert in extension & user data
434 '001' insert in private packets
435 '010' separate stream and user data
436 '111' separate stream and private data
437 8:15 Stream ID (normally 0xBD)
439 Frames per interrupt (max 8). Only valid in raw mode.
441 Total raw VBI frames. Only valid in raw mode.
451 Observed frames per interrupt in raw mode only. Rage 1 to Param[1]
453 Observed number of frames in raw mode. Range 1 to Param[2]
455 Memory offset to start or raw VBI data
457 -------------------------------------------------------------------------------
459 Name CX2341X_ENC_SET_DMA_BLOCK_SIZE
462 Set DMA transfer block size
464 DMA transfer block size in bytes or frames. When unit is bytes,
465 supported block sizes are 2^7, 2^8 and 2^9 bytes.
467 Unit: 0=bytes, 1=frames
469 -------------------------------------------------------------------------------
471 Name CX2341X_ENC_GET_PREV_DMA_INFO_MB_10
474 Returns information on the previous DMA transfer in conjunction with
475 bit 27 of the interrupt mask. Uses mailbox 10.
481 Maximum size of transfer
483 -------------------------------------------------------------------------------
485 Name CX2341X_ENC_GET_PREV_DMA_INFO_MB_9
488 Returns information on the previous DMA transfer in conjunction with
489 bit 27 of the interrupt mask. Uses mailbox 9.
492 Bit 0 set indicates transfer complete
493 Bit 2 set indicates transfer error
494 Bit 4 set indicates linked list error
498 Presentation Time Stamp bits 0..31
500 Presentation Time Stamp bit 32
502 -------------------------------------------------------------------------------
504 Name CX2341X_ENC_SCHED_DMA_TO_HOST
507 Setup DMA to host operation
509 Memory address of link list
511 Length of link list (wtf: what units ???)
515 -------------------------------------------------------------------------------
517 Name CX2341X_ENC_INITIALIZE_INPUT
520 Initializes the video input
522 -------------------------------------------------------------------------------
524 Name CX2341X_ENC_SET_FRAME_DROP_RATE
527 For each frame captured, skip specified number of frames.
529 Number of frames to skip
531 -------------------------------------------------------------------------------
533 Name CX2341X_ENC_PAUSE_ENCODER
536 During a pause condition, all frames are dropped instead of being encoded.
541 -------------------------------------------------------------------------------
543 Name CX2341X_ENC_REFRESH_INPUT
546 Refreshes the video input
548 -------------------------------------------------------------------------------
550 Name CX2341X_ENC_SET_COPYRIGHT
553 Sets stream copyright property
555 0=Stream is not copyrighted
556 1=Stream is copyrighted
558 -------------------------------------------------------------------------------
560 Name CX2341X_ENC_SET_EVENT_NOTIFICATION
563 Setup firmware to notify the host about a particular event. Host must
564 unmask the interrupt bit.
566 Event (0=refresh encoder input)
568 Notification 0=disabled 1=enabled
572 Mailbox slot, -1 if no mailbox required.
574 -------------------------------------------------------------------------------
576 Name CX2341X_ENC_SET_NUM_VSYNC_LINES
579 Depending on the analog video decoder used, this assigns the number
580 of lines for field 1 and 2.
582 Field 1 number of lines:
587 Field 2 number of lines:
592 -------------------------------------------------------------------------------
594 Name CX2341X_ENC_SET_PLACEHOLDER
597 Provides a mechanism of inserting custom user data in the MPEG stream.
599 0=extension & user data
600 1=private packet with stream ID 0xBD
602 Rate at which to insert data, in units of frames (for private packet)
603 or GOPs (for ext. & user data)
605 Number of data DWORDs (below) to insert
625 -------------------------------------------------------------------------------
627 Name CX2341X_ENC_MUTE_VIDEO
633 0 '0'=video not muted
634 '1'=video muted, creates frames with the YUV color defined below
636 8:15 V chrominance information
637 16:23 U chrominance information
638 24:31 Y luminance information
640 -------------------------------------------------------------------------------
642 Name CX2341X_ENC_MUTE_AUDIO
648 1=audio muted (produces silent mpeg audio stream)
650 -------------------------------------------------------------------------------
652 Name CX2341X_ENC_UNKNOWN
655 Unknown API, it's used by Hauppauge though.
657 0 This is the value Hauppauge uses, Unknown what it means.
659 -------------------------------------------------------------------------------
661 Name CX2341X_ENC_MISC
664 Miscellaneous actions. Not known for 100% what it does. It's really a
665 sort of ioctl call. The first parameter is a command number, the second
669 1=set initial SCR value when starting encoding.
670 2=set quality mode (apparently some test setting).
671 3=setup advanced VIM protection handling (supposedly only for the cx23416
673 Actually it looks like this should be 0 for saa7114/5 based card and 1
674 for cx25840 based cards.
675 4=generate artificial PTS timestamps
677 6=something to do with the quantization matrix
678 7=set navigation pack insertion for DVD
679 8=enable scene change detection (seems to be a failure)
680 9=set history parameters of the video input module
681 10=set input field order of VIM
682 11=set quantization matrix
683 12=reset audio interface
684 13=set audio volume delay