diff options
Diffstat (limited to 'Documentation/video4linux/cx2341x/fw-decoder-api.txt')
| -rw-r--r-- | Documentation/video4linux/cx2341x/fw-decoder-api.txt | 297 |
1 files changed, 0 insertions, 297 deletions
diff --git a/Documentation/video4linux/cx2341x/fw-decoder-api.txt b/Documentation/video4linux/cx2341x/fw-decoder-api.txt deleted file mode 100644 index 8c317b7a4..000000000 --- a/Documentation/video4linux/cx2341x/fw-decoder-api.txt +++ /dev/null @@ -1,297 +0,0 @@ -Decoder firmware API description -================================ - -Note: this API is part of the decoder firmware, so it's cx23415 only. - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_PING_FW -Enum 0/0x00 -Description - This API call does nothing. It may be used to check if the firmware - is responding. - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_START_PLAYBACK -Enum 1/0x01 -Description - Begin or resume playback. -Param[0] - 0 based frame number in GOP to begin playback from. -Param[1] - Specifies the number of muted audio frames to play before normal - audio resumes. (This is not implemented in the firmware, leave at 0) - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_STOP_PLAYBACK -Enum 2/0x02 -Description - Ends playback and clears all decoder buffers. If PTS is not zero, - playback stops at specified PTS. -Param[0] - Display 0=last frame, 1=black - Note: this takes effect immediately, so if you want to wait for a PTS, - then use '0', otherwise the screen goes to black at once. - You can call this later (even if there is no playback) with a 1 value - to set the screen to black. -Param[1] - PTS low -Param[2] - PTS high - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_PLAYBACK_SPEED -Enum 3/0x03 -Description - Playback stream at speed other than normal. There are two modes of - operation: - Smooth: host transfers entire stream and firmware drops unused - frames. - Coarse: host drops frames based on indexing as required to achieve - desired speed. -Param[0] - Bitmap: - 0:7 0 normal - 1 fast only "1.5 times" - n nX fast, 1/nX slow - 30 Framedrop: - '0' during 1.5 times play, every other B frame is dropped - '1' during 1.5 times play, stream is unchanged (bitrate - must not exceed 8mbps) - 31 Speed: - '0' slow - '1' fast - Note: n is limited to 2. Anything higher does not result in - faster playback. Instead the host should start dropping frames. -Param[1] - Direction: 0=forward, 1=reverse - Note: to make reverse playback work you have to write full GOPs in - reverse order. -Param[2] - Picture mask: - 1=I frames - 3=I, P frames - 7=I, P, B frames -Param[3] - B frames per GOP (for reverse play only) - Note: for reverse playback the Picture Mask should be set to I or I, P. - Adding B frames to the mask will result in corrupt video. This field - has to be set to the correct value in order to keep the timing correct. -Param[4] - Mute audio: 0=disable, 1=enable -Param[5] - Display 0=frame, 1=field -Param[6] - Specifies the number of muted audio frames to play before normal audio - resumes. (Not implemented in the firmware, leave at 0) - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_STEP_VIDEO -Enum 5/0x05 -Description - Each call to this API steps the playback to the next unit defined below - in the current playback direction. -Param[0] - 0=frame, 1=top field, 2=bottom field - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_DMA_BLOCK_SIZE -Enum 8/0x08 -Description - Set DMA transfer block size. Counterpart to API 0xC9 -Param[0] - DMA transfer block size in bytes. A different size may be specified - when issuing the DMA transfer command. - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_GET_XFER_INFO -Enum 9/0x09 -Description - This API call may be used to detect an end of stream condition. -Result[0] - Stream type -Result[1] - Address offset -Result[2] - Maximum bytes to transfer -Result[3] - Buffer fullness - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_GET_DMA_STATUS -Enum 10/0x0A -Description - Status of the last DMA transfer -Result[0] - Bit 1 set means transfer complete - Bit 2 set means DMA error - Bit 3 set means linked list error -Result[1] - DMA type: 0=MPEG, 1=OSD, 2=YUV - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SCHED_DMA_FROM_HOST -Enum 11/0x0B -Description - Setup DMA from host operation. Counterpart to API 0xCC -Param[0] - Memory address of link list -Param[1] - Total # of bytes to transfer -Param[2] - DMA type (0=MPEG, 1=OSD, 2=YUV) - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_PAUSE_PLAYBACK -Enum 13/0x0D -Description - Freeze playback immediately. In this mode, when internal buffers are - full, no more data will be accepted and data request IRQs will be - masked. -Param[0] - Display: 0=last frame, 1=black - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_HALT_FW -Enum 14/0x0E -Description - The firmware is halted and no further API calls are serviced until - the firmware is uploaded again. - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_STANDARD -Enum 16/0x10 -Description - Selects display standard -Param[0] - 0=NTSC, 1=PAL - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_GET_VERSION -Enum 17/0x11 -Description - Returns decoder firmware version information -Result[0] - Version bitmask: - Bits 0:15 build - Bits 16:23 minor - Bits 24:31 major - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_STREAM_INPUT -Enum 20/0x14 -Description - Select decoder stream input port -Param[0] - 0=memory (default), 1=streaming - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_GET_TIMING_INFO -Enum 21/0x15 -Description - Returns timing information from start of playback -Result[0] - Frame count by decode order -Result[1] - Video PTS bits 0:31 by display order -Result[2] - Video PTS bit 32 by display order -Result[3] - SCR bits 0:31 by display order -Result[4] - SCR bit 32 by display order - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_AUDIO_MODE -Enum 22/0x16 -Description - Select audio mode -Param[0] - Dual mono mode action - 0=Stereo, 1=Left, 2=Right, 3=Mono, 4=Swap, -1=Unchanged -Param[1] - Stereo mode action: - 0=Stereo, 1=Left, 2=Right, 3=Mono, 4=Swap, -1=Unchanged - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_EVENT_NOTIFICATION -Enum 23/0x17 -Description - Setup firmware to notify the host about a particular event. - Counterpart to API 0xD5 -Param[0] - Event: 0=Audio mode change between mono, (joint) stereo and dual channel. - Event: 3=Decoder started - Event: 4=Unknown: goes off 10-15 times per second while decoding. - Event: 5=Some sync event: goes off once per frame. -Param[1] - Notification 0=disabled, 1=enabled -Param[2] - Interrupt bit -Param[3] - Mailbox slot, -1 if no mailbox required. - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_DISPLAY_BUFFERS -Enum 24/0x18 -Description - Number of display buffers. To decode all frames in reverse playback you - must use nine buffers. -Param[0] - 0=six buffers, 1=nine buffers - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_EXTRACT_VBI -Enum 25/0x19 -Description - Extracts VBI data -Param[0] - 0=extract from extension & user data, 1=extract from private packets -Result[0] - VBI table location -Result[1] - VBI table size - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_DECODER_SOURCE -Enum 26/0x1A -Description - Selects decoder source. Ensure that the parameters passed to this - API match the encoder settings. -Param[0] - Mode: 0=MPEG from host, 1=YUV from encoder, 2=YUV from host -Param[1] - YUV picture width -Param[2] - YUV picture height -Param[3] - Bitmap: see Param[0] of API 0xBD - -------------------------------------------------------------------------------- - -Name CX2341X_DEC_SET_PREBUFFERING -Enum 30/0x1E -Description - Decoder prebuffering, when enabled up to 128KB are buffered for - streams <8mpbs or 640KB for streams >8mbps -Param[0] - 0=off, 1=on |