5614b02143
Due to a documentation bug (the type mask is 3 bits long, not 2) the wrong frame types were filled in: the B and P frame types were swapped. This bug also hid a second bug: when a capture is stopped a last entry is written into the pgm index buffer with internal type 0, denoting the end of the program. This entry wasn't ignored, instead it was accidentally returned to the caller as a P frame. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
710 lines
19 KiB
Plaintext
710 lines
19 KiB
Plaintext
Encoder firmware API description
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================================
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_PING_FW
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Enum 128/0x80
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Description
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Does nothing. Can be used to check if the firmware is responding.
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_START_CAPTURE
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Enum 129/0x81
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Description
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Commences the capture of video, audio and/or VBI data. All encoding
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parameters must be initialized prior to this API call. Captures frames
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continuously or until a predefined number of frames have been captured.
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Param[0]
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Capture stream type:
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0=MPEG
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1=Raw
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2=Raw passthrough
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3=VBI
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Param[1]
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Bitmask:
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Bit 0 when set, captures YUV
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Bit 1 when set, captures PCM audio
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Bit 2 when set, captures VBI (same as param[0]=3)
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Bit 3 when set, the capture destination is the decoder
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(same as param[0]=2)
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Bit 4 when set, the capture destination is the host
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Note: this parameter is only meaningful for RAW capture type.
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_STOP_CAPTURE
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Enum 130/0x82
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Description
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Ends a capture in progress
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Param[0]
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0=stop at end of GOP (generates IRQ)
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1=stop immediate (no IRQ)
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Param[1]
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Stream type to stop, see param[0] of API 0x81
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Param[2]
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Subtype, see param[1] of API 0x81
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_AUDIO_ID
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Enum 137/0x89
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Description
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Assigns the transport stream ID of the encoded audio stream
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Param[0]
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Audio Stream ID
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_VIDEO_ID
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Enum 139/0x8B
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Description
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Set video transport stream ID
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Param[0]
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Video stream ID
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_PCR_ID
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Enum 141/0x8D
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Description
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Assigns the transport stream ID for PCR packets
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Param[0]
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PCR Stream ID
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_FRAME_RATE
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Enum 143/0x8F
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Description
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Set video frames per second. Change occurs at start of new GOP.
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Param[0]
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0=30fps
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1=25fps
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_FRAME_SIZE
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Enum 145/0x91
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Description
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Select video stream encoding resolution.
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Param[0]
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Height in lines. Default 480
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Param[1]
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Width in pixels. Default 720
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_BIT_RATE
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Enum 149/0x95
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Description
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Assign average video stream bitrate. Note on the last three params:
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Param[3] and [4] seem to be always 0, param [5] doesn't seem to be used.
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Param[0]
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0=variable bitrate, 1=constant bitrate
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Param[1]
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bitrate in bits per second
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Param[2]
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peak bitrate in bits per second, divided by 400
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Param[3]
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Mux bitrate in bits per second, divided by 400. May be 0 (default).
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Param[4]
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Rate Control VBR Padding
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Param[5]
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VBV Buffer used by encoder
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_GOP_PROPERTIES
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Enum 151/0x97
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Description
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Setup the GOP structure
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Param[0]
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GOP size (maximum is 34)
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Param[1]
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Number of B frames between the I and P frame, plus 1.
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For example: IBBPBBPBBPBB --> GOP size: 12, number of B frames: 2+1 = 3
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Note that GOP size must be a multiple of (B-frames + 1).
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_ASPECT_RATIO
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Enum 153/0x99
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Description
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Sets the encoding aspect ratio. Changes in the aspect ratio take effect
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at the start of the next GOP.
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Param[0]
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'0000' forbidden
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'0001' 1:1 square
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'0010' 4:3
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'0011' 16:9
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'0100' 2.21:1
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'0101' reserved
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....
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'1111' reserved
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_DNR_FILTER_MODE
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Enum 155/0x9B
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Description
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Assign Dynamic Noise Reduction operating mode
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Param[0]
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Bit0: Spatial filter, set=auto, clear=manual
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Bit1: Temporal filter, set=auto, clear=manual
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Param[1]
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Median filter:
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0=Disabled
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1=Horizontal
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2=Vertical
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3=Horiz/Vert
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4=Diagonal
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_DNR_FILTER_PROPS
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Enum 157/0x9D
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Description
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These Dynamic Noise Reduction filter values are only meaningful when
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the respective filter is set to "manual" (See API 0x9B)
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Param[0]
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Spatial filter: default 0, range 0:15
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Param[1]
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Temporal filter: default 0, range 0:31
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_CORING_LEVELS
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Enum 159/0x9F
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Description
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Assign Dynamic Noise Reduction median filter properties.
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Param[0]
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Threshold above which the luminance median filter is enabled.
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Default: 0, range 0:255
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Param[1]
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Threshold below which the luminance median filter is enabled.
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Default: 255, range 0:255
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Param[2]
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Threshold above which the chrominance median filter is enabled.
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Default: 0, range 0:255
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Param[3]
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Threshold below which the chrominance median filter is enabled.
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Default: 255, range 0:255
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_SPATIAL_FILTER_TYPE
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Enum 161/0xA1
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Description
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Assign spatial prefilter parameters
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Param[0]
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Luminance filter
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0=Off
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1=1D Horizontal
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2=1D Vertical
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3=2D H/V Separable (default)
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4=2D Symmetric non-separable
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Param[1]
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Chrominance filter
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0=Off
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1=1D Horizontal (default)
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_VBI_LINE
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Enum 183/0xB7
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Description
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Selects VBI line number.
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Param[0]
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Bits 0:4 line number
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Bit 31 0=top_field, 1=bottom_field
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Bits 0:31 all set specifies "all lines"
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Param[1]
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VBI line information features: 0=disabled, 1=enabled
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Param[2]
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Slicing: 0=None, 1=Closed Caption
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Almost certainly not implemented. Set to 0.
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Param[3]
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Luminance samples in this line.
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Almost certainly not implemented. Set to 0.
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Param[4]
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Chrominance samples in this line
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Almost certainly not implemented. Set to 0.
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_STREAM_TYPE
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Enum 185/0xB9
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Description
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Assign stream type
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Note: Transport stream is not working in recent firmwares.
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And in older firmwares the timestamps in the TS seem to be
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unreliable.
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Param[0]
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0=Program stream
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1=Transport stream
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2=MPEG1 stream
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3=PES A/V stream
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5=PES Video stream
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7=PES Audio stream
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10=DVD stream
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11=VCD stream
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12=SVCD stream
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13=DVD_S1 stream
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14=DVD_S2 stream
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_OUTPUT_PORT
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Enum 187/0xBB
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Description
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Assign stream output port. Normally 0 when the data is copied through
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the PCI bus (DMA), and 1 when the data is streamed to another chip
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(pvrusb and cx88-blackbird).
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Param[0]
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0=Memory (default)
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1=Streaming
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2=Serial
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Param[1]
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Unknown, but leaving this to 0 seems to work best. Indications are that
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this might have to do with USB support, although passing anything but 0
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only breaks things.
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_AUDIO_PROPERTIES
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Enum 189/0xBD
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Description
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Set audio stream properties, may be called while encoding is in progress.
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Note: all bitfields are consistent with ISO11172 documentation except
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bits 2:3 which ISO docs define as:
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'11' Layer I
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'10' Layer II
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'01' Layer III
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'00' Undefined
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This discrepancy may indicate a possible error in the documentation.
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Testing indicated that only Layer II is actually working, and that
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the minimum bitrate should be 192 kbps.
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Param[0]
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Bitmask:
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0:1 '00' 44.1Khz
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'01' 48Khz
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'10' 32Khz
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'11' reserved
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2:3 '01'=Layer I
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'10'=Layer II
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4:7 Bitrate:
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Index | Layer I | Layer II
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------+-------------+------------
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'0000' | free format | free format
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'0001' | 32 kbit/s | 32 kbit/s
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'0010' | 64 kbit/s | 48 kbit/s
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'0011' | 96 kbit/s | 56 kbit/s
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'0100' | 128 kbit/s | 64 kbit/s
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'0101' | 160 kbit/s | 80 kbit/s
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'0110' | 192 kbit/s | 96 kbit/s
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'0111' | 224 kbit/s | 112 kbit/s
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'1000' | 256 kbit/s | 128 kbit/s
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'1001' | 288 kbit/s | 160 kbit/s
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'1010' | 320 kbit/s | 192 kbit/s
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'1011' | 352 kbit/s | 224 kbit/s
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'1100' | 384 kbit/s | 256 kbit/s
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'1101' | 416 kbit/s | 320 kbit/s
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'1110' | 448 kbit/s | 384 kbit/s
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Note: For Layer II, not all combinations of total bitrate
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and mode are allowed. See ISO11172-3 3-Annex B, Table 3-B.2
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8:9 '00'=Stereo
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'01'=JointStereo
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'10'=Dual
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'11'=Mono
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Note: the cx23415 cannot decode Joint Stereo properly.
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10:11 Mode Extension used in joint_stereo mode.
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In Layer I and II they indicate which subbands are in
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intensity_stereo. All other subbands are coded in stereo.
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'00' subbands 4-31 in intensity_stereo, bound==4
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'01' subbands 8-31 in intensity_stereo, bound==8
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'10' subbands 12-31 in intensity_stereo, bound==12
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'11' subbands 16-31 in intensity_stereo, bound==16
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12:13 Emphasis:
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'00' None
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'01' 50/15uS
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'10' reserved
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'11' CCITT J.17
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14 CRC:
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'0' off
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'1' on
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15 Copyright:
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'0' off
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'1' on
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16 Generation:
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'0' copy
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'1' original
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_HALT_FW
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Enum 195/0xC3
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Description
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The firmware is halted and no further API calls are serviced until the
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firmware is uploaded again.
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_GET_VERSION
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Enum 196/0xC4
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Description
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Returns the version of the encoder firmware.
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Result[0]
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Version bitmask:
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Bits 0:15 build
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Bits 16:23 minor
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Bits 24:31 major
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_GOP_CLOSURE
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Enum 197/0xC5
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Description
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Assigns the GOP open/close property.
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Param[0]
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0=Open
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1=Closed
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_GET_SEQ_END
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Enum 198/0xC6
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Description
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Obtains the sequence end code of the encoder's buffer. When a capture
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is started a number of interrupts are still generated, the last of
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which will have Result[0] set to 1 and Result[1] will contain the size
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of the buffer.
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Result[0]
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State of the transfer (1 if last buffer)
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Result[1]
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If Result[0] is 1, this contains the size of the last buffer, undefined
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otherwise.
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_PGM_INDEX_INFO
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Enum 199/0xC7
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Description
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Sets the Program Index Information.
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The information is stored as follows:
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struct info {
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u32 length; // Length of this frame
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u32 offset_low; // Offset in the file of the
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u32 offset_high; // start of this frame
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u32 mask1; // Bits 0-2 are the type mask:
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// 1=I, 2=P, 4=B
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// 0=End of Program Index, other fields
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// are invalid.
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u32 pts; // The PTS of the frame
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u32 mask2; // Bit 0 is bit 32 of the pts.
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};
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u32 table_ptr;
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struct info index[400];
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The table_ptr is the encoder memory address in the table were
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*new* entries will be written. Note that this is a ringbuffer,
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so the table_ptr will wraparound.
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Param[0]
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Picture Mask:
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0=No index capture
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1=I frames
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3=I,P frames
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7=I,P,B frames
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(Seems to be ignored, it always indexes I, P and B frames)
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Param[1]
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Elements requested (up to 400)
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Result[0]
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Offset in the encoder memory of the start of the table.
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Result[1]
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Number of allocated elements up to a maximum of Param[1]
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_VBI_CONFIG
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Enum 200/0xC8
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Description
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Configure VBI settings
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Param[0]
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Bitmap:
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0 Mode '0' Sliced, '1' Raw
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1:3 Insertion:
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'000' insert in extension & user data
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'001' insert in private packets
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'010' separate stream and user data
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'111' separate stream and private data
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8:15 Stream ID (normally 0xBD)
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Param[1]
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Frames per interrupt (max 8). Only valid in raw mode.
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Param[2]
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Total raw VBI frames. Only valid in raw mode.
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Param[3]
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Start codes
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Param[4]
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Stop codes
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Param[5]
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Lines per frame
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Param[6]
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Byte per line
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Result[0]
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Observed frames per interrupt in raw mode only. Rage 1 to Param[1]
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Result[1]
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Observed number of frames in raw mode. Range 1 to Param[2]
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Result[2]
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Memory offset to start or raw VBI data
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_DMA_BLOCK_SIZE
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Enum 201/0xC9
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Description
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Set DMA transfer block size
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Param[0]
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DMA transfer block size in bytes or frames. When unit is bytes,
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supported block sizes are 2^7, 2^8 and 2^9 bytes.
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Param[1]
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Unit: 0=bytes, 1=frames
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_GET_PREV_DMA_INFO_MB_10
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Enum 202/0xCA
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Description
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Returns information on the previous DMA transfer in conjunction with
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bit 27 of the interrupt mask. Uses mailbox 10.
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Result[0]
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Type of stream
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Result[1]
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Address Offset
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Result[2]
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Maximum size of transfer
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_GET_PREV_DMA_INFO_MB_9
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Enum 203/0xCB
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Description
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Returns information on the previous DMA transfer in conjunction with
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bit 27 or 18 of the interrupt mask. Uses mailbox 9.
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Result[0]
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Status bits:
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0 read completed
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1 write completed
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2 DMA read error
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3 DMA write error
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4 Scatter-Gather array error
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Result[1]
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DMA type
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Result[2]
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Presentation Time Stamp bits 0..31
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Result[3]
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Presentation Time Stamp bit 32
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SCHED_DMA_TO_HOST
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Enum 204/0xCC
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Description
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Setup DMA to host operation
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Param[0]
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Memory address of link list
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Param[1]
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Length of link list (wtf: what units ???)
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Param[2]
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DMA type (0=MPEG)
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_INITIALIZE_INPUT
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Enum 205/0xCD
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Description
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Initializes the video input
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_FRAME_DROP_RATE
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Enum 208/0xD0
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Description
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For each frame captured, skip specified number of frames.
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Param[0]
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Number of frames to skip
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_PAUSE_ENCODER
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Enum 210/0xD2
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Description
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During a pause condition, all frames are dropped instead of being encoded.
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Param[0]
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0=Pause encoding
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1=Continue encoding
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_REFRESH_INPUT
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Enum 211/0xD3
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Description
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Refreshes the video input
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_COPYRIGHT
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Enum 212/0xD4
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Description
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Sets stream copyright property
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Param[0]
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0=Stream is not copyrighted
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1=Stream is copyrighted
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_EVENT_NOTIFICATION
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Enum 213/0xD5
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Description
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Setup firmware to notify the host about a particular event. Host must
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unmask the interrupt bit.
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Param[0]
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Event (0=refresh encoder input)
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Param[1]
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Notification 0=disabled 1=enabled
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Param[2]
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Interrupt bit
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Param[3]
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Mailbox slot, -1 if no mailbox required.
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_NUM_VSYNC_LINES
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Enum 214/0xD6
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Description
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Depending on the analog video decoder used, this assigns the number
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of lines for field 1 and 2.
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Param[0]
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Field 1 number of lines:
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0x00EF for SAA7114
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0x00F0 for SAA7115
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0x0105 for Micronas
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Param[1]
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Field 2 number of lines:
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0x00EF for SAA7114
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0x00F0 for SAA7115
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0x0106 for Micronas
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|
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_PLACEHOLDER
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Enum 215/0xD7
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Description
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Provides a mechanism of inserting custom user data in the MPEG stream.
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Param[0]
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0=extension & user data
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1=private packet with stream ID 0xBD
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Param[1]
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|
Rate at which to insert data, in units of frames (for private packet)
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or GOPs (for ext. & user data)
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Param[2]
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Number of data DWORDs (below) to insert
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Param[3]
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|
Custom data 0
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Param[4]
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Custom data 1
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|
Param[5]
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Custom data 2
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|
Param[6]
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|
Custom data 3
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|
Param[7]
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|
Custom data 4
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|
Param[8]
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|
Custom data 5
|
|
Param[9]
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|
Custom data 6
|
|
Param[10]
|
|
Custom data 7
|
|
Param[11]
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|
Custom data 8
|
|
|
|
-------------------------------------------------------------------------------
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Name CX2341X_ENC_MUTE_VIDEO
|
|
Enum 217/0xD9
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Description
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Video muting
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Param[0]
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|
Bit usage:
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|
0 '0'=video not muted
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|
'1'=video muted, creates frames with the YUV color defined below
|
|
1:7 Unused
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|
8:15 V chrominance information
|
|
16:23 U chrominance information
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|
24:31 Y luminance information
|
|
|
|
-------------------------------------------------------------------------------
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Name CX2341X_ENC_MUTE_AUDIO
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|
Enum 218/0xDA
|
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Description
|
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Audio muting
|
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Param[0]
|
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0=audio not muted
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1=audio muted (produces silent mpeg audio stream)
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|
|
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-------------------------------------------------------------------------------
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Name CX2341X_ENC_SET_VERT_CROP_LINE
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|
Enum 219/0xDB
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Description
|
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Something to do with 'Vertical Crop Line'
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|
Param[0]
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If saa7114 and raw VBI capture and 60 Hz, then set to 10001.
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|
Else 0.
|
|
|
|
-------------------------------------------------------------------------------
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Name CX2341X_ENC_MISC
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|
Enum 220/0xDC
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Description
|
|
Miscellaneous actions. Not known for 100% what it does. It's really a
|
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sort of ioctl call. The first parameter is a command number, the second
|
|
the value.
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|
Param[0]
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|
Command number:
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|
1=set initial SCR value when starting encoding (works).
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|
2=set quality mode (apparently some test setting).
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|
3=setup advanced VIM protection handling.
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|
Always 1 for the cx23416 and 0 for cx23415.
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|
4=generate DVD compatible PTS timestamps
|
|
5=USB flush mode
|
|
6=something to do with the quantization matrix
|
|
7=set navigation pack insertion for DVD: adds 0xbf (private stream 2)
|
|
packets to the MPEG. The size of these packets is 2048 bytes (including
|
|
the header of 6 bytes: 0x000001bf + length). The payload is zeroed and
|
|
it is up to the application to fill them in. These packets are apparently
|
|
inserted every four frames.
|
|
8=enable scene change detection (seems to be a failure)
|
|
9=set history parameters of the video input module
|
|
10=set input field order of VIM
|
|
11=set quantization matrix
|
|
12=reset audio interface after channel change or input switch (has no argument).
|
|
Needed for the cx2584x, not needed for the mspx4xx, but it doesn't seem to
|
|
do any harm calling it regardless.
|
|
13=set audio volume delay
|
|
14=set audio delay
|
|
|
|
Param[1]
|
|
Command value.
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