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. 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).
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
285 -------------------------------------------------------------------------------
287 Name CX2341X_ENC_SET_AUDIO_PROPERTIES
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:
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.
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
335 Note: testing seems to indicate that Mono and possibly
336 JointStereo are not working (default to stereo).
337 Dual does work, though.
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
365 -------------------------------------------------------------------------------
367 Name CX2341X_ENC_HALT_FW
370 The firmware is halted and no further API calls are serviced until the
371 firmware is uploaded again.
373 -------------------------------------------------------------------------------
375 Name CX2341X_ENC_GET_VERSION
378 Returns the version of the encoder firmware.
385 -------------------------------------------------------------------------------
387 Name CX2341X_ENC_SET_GOP_CLOSURE
390 Assigns the GOP open/close property.
395 -------------------------------------------------------------------------------
397 Name CX2341X_ENC_GET_SEQ_END
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
405 State of the transfer (1 if last buffer)
407 If Result[0] is 1, this contains the size of the last buffer, undefined
410 -------------------------------------------------------------------------------
412 Name CX2341X_ENC_SET_PGM_INDEX_INFO
415 Sets the Program Index Information.
423 Elements requested (up to 400)
425 Offset in SDF memory of the table.
427 Number of allocated elements up to a maximum of Param[1]
429 -------------------------------------------------------------------------------
431 Name CX2341X_ENC_SET_VBI_CONFIG
434 Configure VBI settings
437 0 Mode '0' Sliced, '1' Raw
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)
445 Frames per interrupt (max 8). Only valid in raw mode.
447 Total raw VBI frames. Only valid in raw mode.
457 Observed frames per interrupt in raw mode only. Rage 1 to Param[1]
459 Observed number of frames in raw mode. Range 1 to Param[2]
461 Memory offset to start or raw VBI data
463 -------------------------------------------------------------------------------
465 Name CX2341X_ENC_SET_DMA_BLOCK_SIZE
468 Set DMA transfer block size
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.
473 Unit: 0=bytes, 1=frames
475 -------------------------------------------------------------------------------
477 Name CX2341X_ENC_GET_PREV_DMA_INFO_MB_10
480 Returns information on the previous DMA transfer in conjunction with
481 bit 27 of the interrupt mask. Uses mailbox 10.
487 Maximum size of transfer
489 -------------------------------------------------------------------------------
491 Name CX2341X_ENC_GET_PREV_DMA_INFO_MB_9
494 Returns information on the previous DMA transfer in conjunction with
495 bit 27 of the interrupt mask. Uses mailbox 9.
498 Bit 0 set indicates transfer complete
499 Bit 2 set indicates transfer error
500 Bit 4 set indicates linked list error
504 Presentation Time Stamp bits 0..31
506 Presentation Time Stamp bit 32
508 -------------------------------------------------------------------------------
510 Name CX2341X_ENC_SCHED_DMA_TO_HOST
513 Setup DMA to host operation
515 Memory address of link list
517 Length of link list (wtf: what units ???)
521 -------------------------------------------------------------------------------
523 Name CX2341X_ENC_INITIALIZE_INPUT
526 Initializes the video input
528 -------------------------------------------------------------------------------
530 Name CX2341X_ENC_SET_FRAME_DROP_RATE
533 For each frame captured, skip specified number of frames.
535 Number of frames to skip
537 -------------------------------------------------------------------------------
539 Name CX2341X_ENC_PAUSE_ENCODER
542 During a pause condition, all frames are dropped instead of being encoded.
547 -------------------------------------------------------------------------------
549 Name CX2341X_ENC_REFRESH_INPUT
552 Refreshes the video input
554 -------------------------------------------------------------------------------
556 Name CX2341X_ENC_SET_COPYRIGHT
559 Sets stream copyright property
561 0=Stream is not copyrighted
562 1=Stream is copyrighted
564 -------------------------------------------------------------------------------
566 Name CX2341X_ENC_SET_EVENT_NOTIFICATION
569 Setup firmware to notify the host about a particular event. Host must
570 unmask the interrupt bit.
572 Event (0=refresh encoder input)
574 Notification 0=disabled 1=enabled
578 Mailbox slot, -1 if no mailbox required.
580 -------------------------------------------------------------------------------
582 Name CX2341X_ENC_SET_NUM_VSYNC_LINES
585 Depending on the analog video decoder used, this assigns the number
586 of lines for field 1 and 2.
588 Field 1 number of lines:
593 Field 2 number of lines:
598 -------------------------------------------------------------------------------
600 Name CX2341X_ENC_SET_PLACEHOLDER
603 Provides a mechanism of inserting custom user data in the MPEG stream.
605 0=extension & user data
606 1=private packet with stream ID 0xBD
608 Rate at which to insert data, in units of frames (for private packet)
609 or GOPs (for ext. & user data)
611 Number of data DWORDs (below) to insert
631 -------------------------------------------------------------------------------
633 Name CX2341X_ENC_MUTE_VIDEO
639 0 '0'=video not muted
640 '1'=video muted, creates frames with the YUV color defined below
642 8:15 V chrominance information
643 16:23 U chrominance information
644 24:31 Y luminance information
646 -------------------------------------------------------------------------------
648 Name CX2341X_ENC_MUTE_AUDIO
654 1=audio muted (produces silent mpeg audio stream)
656 -------------------------------------------------------------------------------
658 Name CX2341X_ENC_UNKNOWN
661 Unknown API, it's used by Hauppauge though.
663 0 This is the value Hauppauge uses, Unknown what it means.
665 -------------------------------------------------------------------------------
667 Name CX2341X_ENC_MISC
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
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
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
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