Top page 2.0.4 AJ
Related pages: Live View Structure
Related page: AJ_LiveView_main
Very low level (ie Fun) stuff - programming the DIGIC for zoom. http://magiclantern.wikia.com/wiki/2.0.4_DIGIC_config_for_Zoom
Very early page on Subs to Update DIGIC registers: http://magiclantern.wikia.com/wiki/2.0.4_Engio_write
NB: This page is being used as a 'scratchpad'.
Many of the Canon ideas on Zooming use a language that is also used by others in this engineering space: http://focus.ti.com/lit/ug/sprufg8b/sprufg8b.pdf [broken link]
[2010_09_20] --> Remidner to AJ. Update the 16 sub routines for x1 x5 x10 with their new names / add comment as to what they do.
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5 Zoom modes. Two rec modes, Three non-record modes.[]
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- In LiveView Non-record mode - it is possible to magnify x1, x5, and x10.These correspond to LiveViewMgr[0xC0] =0 , 1, and 2 respectively.
- In LiveView Record mode - there are two modes that are both x1 magniifiction.
These correspond to LiveViewMgr[0x948] =0 or 1, respectively. - The firmware uses these to decide which of the 5 banks of 16 subroutines to call to setup the DIGIC.
Where is the list of 16 DIGIC setup subs selected?[]
- AJ_ChangeVDInterrupt() - Note: This routine also mentions Setting up interrupts for Recording
Both of the above routines are called as part of the LiveView State machine (called "LVstate")
Both of these (currently) seem to refer to all 5 Zoom mode lists of 16subs wth a switch:
LiveView Non-record -> get 16 subroutines in AJ_GetLiveViewPassInfo_Zoom()
LiveView Record -> get 16 subroutines in AJ_GetRecMoviePassInfo_RecModeD()
LiveViewMgr_Struct[]
aAJ_0x1D78_LiveViewMgr_struct_ptr points to aAJ_LiveViewMgr_struct (size = 0x29D8)
| [0xC0] |
NON-RECORD Magnification LVmagSubBank |
0 = x1 bank of 16 subs to call 1 = x5 bank of 16 subs to call 2 = x10 bank of 16 subs to call |
Ref: AJ_LiveView_main(), AJ_ChangeVDInterrupt() Nb: These subs write the addr of the 16 engio structs to [0xCD0] |
| [0x948] |
RECORD RecMovSubBank |
0 = bank of 16 subs to call 1 = another bank of 16 subs to call
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AJ_GetRecMoviePassInfo_RecModeD() uses this to select banks of 16 subs at aAJ_0xFFC7A444_sublist_RecMoviePassInfo_related |
| [0xCD0] | adr_16_subs | = Address of 16 engio_write_subs to call depending on Zoom level cf [0xC0] |
How does the firmware call AJ_LiveView_main() and AJ_ChangeVDInterrupt()?
How is AJ_LiveView_main() called?[]
There is a Huge list used as part of the LiveView state machine - called "LVState".
- This state machine directy calls AJ_LiveView_main()
- Also, the state machine calls a small routine AJ_LiveView_StartInSuspend() which then calls AJ_LiveView_main()
More deatils on where the "LVState" State machine is created:
- AJ_LiveView_Initialise() ---> AJ_CreateStateObject_LiveView() ---> Huge state machine created using following struct:
ROM:FFC79630 aAJ_0xFFC79630_LV_VarSubList DCD #1 ROM:FFC79634 DCD AJ_LiveView_main() ROM:FFC79638 DCD #1 ROM:FFC7963C DCD AJ_LDR_R0_aAJ_0x44FC_LiveView_struct_0x2C() ............ ROM:FFC79690 DCD #13 ROM:FFC79694 DCD AJ_LiveView_StartInSuspend() ............ ROM:FFC79768 DCD #4 ROM:FFC7976C DCD AJ_ChangeVDInterrupt() ...... And several hundred more pairs of Value, Sub() used in the "LVState" state machine.
How is AJ_ChangeVDInterrupt() called?[]
- Look at the "LVState" state machine above .. it simply a different state in the LiveView State machine.
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List of 16 DIGIC routines called for ZOOM level -> x1 , x5 , x10 [NON-RECORD][]
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| Subs [0..15] | x1 | x5 | x10 |
|---|---|---|---|
| 0 | AJ_STR_to_HDMI_SetImagePass_struct_0x13E8C_0x04_x1 | AJ_SetImagePassParameter_x5 | AJ_STR_0x13F0C_0x04_SetImagePass_x10_struct |
| 1 | AJ_calls_SetImagePass_x1 | AJ_SetImagePass_x5 | AJ_SetImagePass_x10 |
| 2 | AJ_StartImagePass_x1 | AJ_StartImagePass_x5 | AJ_StartImagePass_x10 |
| 3 [TG_standby] | AJ_0xFFA081D4_seems_to_be_x1_related | AJ_0x13EC0_struct_engio_x5 | AJ_Start_n_SetImagePass_x10 |
| 4 | AJ_calls_x1_related | AJ_ClearImagePass_x5 | AJ_dummy_cbr_engio_x10 |
| 5 | AJ_Set_n_Start_x1_related | AJ_0x13EC0_n_0xC0F08000_struct_engio_x5 | AJ_0xC0F11000_n_0xC0F08000_engio_x10 |
| 6 | AJ_ImagePass_related_x1 | AJ_Guess_Set_n_clear_ImagePass_x5_related | AJ_Start_n_Set_ImagePass_x10_related |
| 7 | AJ_calls_eng_set_dummy_cbr | AJ_eng_set_dummy_cbr_x5 | AJ_eng_set_dummy_cbr_x10 |
| 8 | AJ_SetHivshdIrParameter_x1 | AJ_null_sub_x5 | AJ_null_sub_x10 |
| 9 | AJ_0x13F78_engine_struct_x1x5x10 | AJ_0x13F78_engine_struct_x1x5x10 | AJ_0x13F78_engine_struct_x1x5x10 |
| 10 | AJ_SetIntermediatePass_x1 | AJ_SetIntermediatePassMagnify_x5x10 | AJ_SetIntermediatePassMagnify_x5x10 |
| 11 | AJ_StarIntermediatePass_x1 | AJ_StartIntermediatePassMagnify_x5x10 | AJ_StartIntermediatePassMagnify_x5x10 |
| 12 [TG_standby] | AJ_0x13F78_n_callback_engine_struct_x1x5x10 | AJ_0x13F78_n_callback_engine_struct_x1x5x10 | AJ_0x13F78_n_callback_engine_struct_x1x5x10 |
| 13 | AJ_0x13F78_LockEngineResources_x1x5x10 | AJ_0x13F78_LockEngineResources_x1x5x10 | AJ_0x13F78_LockEngineResources_x1x5x10 |
| 14 | AJ_0x13F78_n_0xC0F1E000_x1x5x10 | AJ_0x13F78_n_0xC0F1E000_x1x5x10 | AJ_0x13F78_n_0xC0F1E000_x1x5x10 |
| 15 | 0 | 0 | 0 |
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List of 16 DIGIC routines called for ZOOM level -> x1 only [RECORD][]
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| Subs [0..15] | x1 mode 1 | x1 mode 2 |
|---|---|---|
| 0 | AJ_STR_to_HDMI_SetImagePass_struct_0x13E8C_0x04_x1 | AJ_STR_to_HDMI_SetImagePass_struct_0x13E8C_0x04_x1 |
| 1 | AJ_calls2_SetImagePass_x1 | AJ_calls2_SetImagePass_x1 |
| 2 | AJ_StartImagePass_x1 | AJ_StartImagePass_x1 |
| 3 | AJ_0xFFA081D4_seems_to_be_x1_related | AJ_0xFFA081D4_seems_to_be_x1_related |
| 4 [differs from x1 zoom] | AJ_calls2_x1_related | AJ_calls2_x1_related |
| 5 | AJ_Set_n_Start_x1_related | AJ_Set_n_Start_x1_related |
| 6 | AJ_ImagePass_related_x1 | AJ_ImagePass_related_x1 |
| 7 | AJ_calls_eng_set_dummy_cbr | AJ_calls_eng_set_dummy_cbr |
| 8 | AJ_SetHivshdIrParameter_x1 | AJ_SetHivshdIrParameter_x1 |
| 9 | AJ_0x13F78_engine_struct_x1x5x10 | AJ_0x13F78_engine_struct_x1x5x10 |
| 10 | AJ_SetIntermediatePassH264_1080 | AJ_SetIntermediatePassH264_VGA |
| 11 | AJ_StartIntermediatePassH264_1080i | AJ_StartIntermediatePassH264_VGA |
| 12 | AJ_0xFFCABA60_engio_struct_n_0x33B88_callback_n_EngDrvOut_n_0x13F78_engio_struct | AJ_0xFFCABA98_engio_write_struct_n_0x33B88_callback_n_EngDrvOut_n_0x13F78_engio_struct |
| 13 | AJ_0xFFCABB28_engio_struct_n_0x13F78_engio_struct_n_LockEngine | AJ_0xFFCABB78_engio_write_struct_n_0x13F78_engio_struct |
| 14 | AJ_0x13F78_n_0xC0F1E000_x1x5x10 | AJ_0x13F78_n_0xC0F1E000_x1x5x10 |
| 15 | 1 | 1 |
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Zooming before Recording[]
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The Granularity of the Zoom in x5 and x10 mode is: 57 positions horizontally, 37 positions vertically.