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Diffstat (limited to 'Documentation/video4linux/cx2341x/fw-osd-api.txt')
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1 files changed, 350 insertions, 0 deletions
diff --git a/Documentation/video4linux/cx2341x/fw-osd-api.txt b/Documentation/video4linux/cx2341x/fw-osd-api.txt new file mode 100644 index 000000000..89c460104 --- /dev/null +++ b/Documentation/video4linux/cx2341x/fw-osd-api.txt @@ -0,0 +1,350 @@ +OSD firmware API description +============================ + +Note: this API is part of the decoder firmware, so it's cx23415 only. + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_FRAMEBUFFER +Enum 65/0x41 +Description + Return base and length of contiguous OSD memory. +Result[0] + OSD base address +Result[1] + OSD length + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_PIXEL_FORMAT +Enum 66/0x42 +Description + Query OSD format +Result[0] + 0=8bit index + 1=16bit RGB 5:6:5 + 2=16bit ARGB 1:5:5:5 + 3=16bit ARGB 1:4:4:4 + 4=32bit ARGB 8:8:8:8 + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_PIXEL_FORMAT +Enum 67/0x43 +Description + Assign pixel format +Param[0] + 0=8bit index + 1=16bit RGB 5:6:5 + 2=16bit ARGB 1:5:5:5 + 3=16bit ARGB 1:4:4:4 + 4=32bit ARGB 8:8:8:8 + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_STATE +Enum 68/0x44 +Description + Query OSD state +Result[0] + Bit 0 0=off, 1=on + Bits 1:2 alpha control + Bits 3:5 pixel format + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_STATE +Enum 69/0x45 +Description + OSD switch +Param[0] + 0=off, 1=on + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_OSD_COORDS +Enum 70/0x46 +Description + Retrieve coordinates of OSD area blended with video +Result[0] + OSD buffer address +Result[1] + Stride in pixels +Result[2] + Lines in OSD buffer +Result[3] + Horizontal offset in buffer +Result[4] + Vertical offset in buffer + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_OSD_COORDS +Enum 71/0x47 +Description + Assign the coordinates of the OSD area to blend with video +Param[0] + buffer address +Param[1] + buffer stride in pixels +Param[2] + lines in buffer +Param[3] + horizontal offset +Param[4] + vertical offset + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_SCREEN_COORDS +Enum 72/0x48 +Description + Retrieve OSD screen area coordinates +Result[0] + top left horizontal offset +Result[1] + top left vertical offset +Result[2] + bottom right horizontal offset +Result[3] + bottom right vertical offset + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_SCREEN_COORDS +Enum 73/0x49 +Description + Assign the coordinates of the screen area to blend with video +Param[0] + top left horizontal offset +Param[1] + top left vertical offset +Param[2] + bottom left horizontal offset +Param[3] + bottom left vertical offset + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_GLOBAL_ALPHA +Enum 74/0x4A +Description + Retrieve OSD global alpha +Result[0] + global alpha: 0=off, 1=on +Result[1] + bits 0:7 global alpha + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_GLOBAL_ALPHA +Enum 75/0x4B +Description + Update global alpha +Param[0] + global alpha: 0=off, 1=on +Param[1] + global alpha (8 bits) +Param[2] + local alpha: 0=on, 1=off + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_BLEND_COORDS +Enum 78/0x4C +Description + Move start of blending area within display buffer +Param[0] + horizontal offset in buffer +Param[1] + vertical offset in buffer + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_FLICKER_STATE +Enum 79/0x4F +Description + Retrieve flicker reduction module state +Result[0] + flicker state: 0=off, 1=on + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_FLICKER_STATE +Enum 80/0x50 +Description + Set flicker reduction module state +Param[0] + State: 0=off, 1=on + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_BLT_COPY +Enum 82/0x52 +Description + BLT copy +Param[0] +'0000' zero +'0001' ~destination AND ~source +'0010' ~destination AND source +'0011' ~destination +'0100' destination AND ~source +'0101' ~source +'0110' destination XOR source +'0111' ~destination OR ~source +'1000' ~destination AND ~source +'1001' destination XNOR source +'1010' source +'1011' ~destination OR source +'1100' destination +'1101' destination OR ~source +'1110' destination OR source +'1111' one + +Param[1] + Resulting alpha blending + '01' source_alpha + '10' destination_alpha + '11' source_alpha*destination_alpha+1 + (zero if both source and destination alpha are zero) +Param[2] + '00' output_pixel = source_pixel + + '01' if source_alpha=0: + output_pixel = destination_pixel + if 256 > source_alpha > 1: + output_pixel = ((source_alpha + 1)*source_pixel + + (255 - source_alpha)*destination_pixel)/256 + + '10' if destination_alpha=0: + output_pixel = source_pixel + if 255 > destination_alpha > 0: + output_pixel = ((255 - destination_alpha)*source_pixel + + (destination_alpha + 1)*destination_pixel)/256 + + '11' if source_alpha=0: + source_temp = 0 + if source_alpha=255: + source_temp = source_pixel*256 + if 255 > source_alpha > 0: + source_temp = source_pixel*(source_alpha + 1) + if destination_alpha=0: + destination_temp = 0 + if destination_alpha=255: + destination_temp = destination_pixel*256 + if 255 > destination_alpha > 0: + destination_temp = destination_pixel*(destination_alpha + 1) + output_pixel = (source_temp + destination_temp)/256 +Param[3] + width +Param[4] + height +Param[5] + destination pixel mask +Param[6] + destination rectangle start address +Param[7] + destination stride in dwords +Param[8] + source stride in dwords +Param[9] + source rectangle start address + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_BLT_FILL +Enum 83/0x53 +Description + BLT fill color +Param[0] + Same as Param[0] on API 0x52 +Param[1] + Same as Param[1] on API 0x52 +Param[2] + Same as Param[2] on API 0x52 +Param[3] + width +Param[4] + height +Param[5] + destination pixel mask +Param[6] + destination rectangle start address +Param[7] + destination stride in dwords +Param[8] + color fill value + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_BLT_TEXT +Enum 84/0x54 +Description + BLT for 8 bit alpha text source +Param[0] + Same as Param[0] on API 0x52 +Param[1] + Same as Param[1] on API 0x52 +Param[2] + Same as Param[2] on API 0x52 +Param[3] + width +Param[4] + height +Param[5] + destination pixel mask +Param[6] + destination rectangle start address +Param[7] + destination stride in dwords +Param[8] + source stride in dwords +Param[9] + source rectangle start address +Param[10] + color fill value + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_FRAMEBUFFER_WINDOW +Enum 86/0x56 +Description + Positions the main output window on the screen. The coordinates must be + such that the entire window fits on the screen. +Param[0] + window width +Param[1] + window height +Param[2] + top left window corner horizontal offset +Param[3] + top left window corner vertical offset + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_CHROMA_KEY +Enum 96/0x60 +Description + Chroma key switch and color +Param[0] + state: 0=off, 1=on +Param[1] + color + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_GET_ALPHA_CONTENT_INDEX +Enum 97/0x61 +Description + Retrieve alpha content index +Result[0] + alpha content index, Range 0:15 + +------------------------------------------------------------------------------- + +Name CX2341X_OSD_SET_ALPHA_CONTENT_INDEX +Enum 98/0x62 +Description + Assign alpha content index +Param[0] + alpha content index, range 0:15 |