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SA9200: Add YUV blitting, do full-screen updates more efficiently and properly clip partial updates. Plugin struct becomes incompatible for this target but leave version alone since it's still dev-only.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29028 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2011-01-11 01:21:31 +00:00
parent 2e686eca63
commit 0dd74ca722
6 changed files with 690 additions and 18 deletions
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2
apps/plugin.c
View file

@ -201,7 +201,7 @@ static const struct plugin_api rockbox_api = {
#if defined(TOSHIBA_GIGABEAT_F) || defined(SANSA_E200) || defined(SANSA_C200) \
|| defined(IRIVER_H10) || defined(COWON_D2) || defined(PHILIPS_HDD1630) \
|| defined(SANSA_FUZE) || defined(SANSA_E200V2) || defined(SANSA_FUZEV2) \
|| defined(TOSHIBA_GIGABEAT_S)
|| defined(TOSHIBA_GIGABEAT_S) || defined(PHILIPS_SA9200)
lcd_yuv_set_options,
#endif
#endif /* MEMORYSIZE > 2 */

2
apps/plugin.h
View file

@ -240,7 +240,7 @@ struct plugin_api {
#if defined(TOSHIBA_GIGABEAT_F) || defined(SANSA_E200) || defined(SANSA_C200) \
|| defined(IRIVER_H10) || defined(COWON_D2) || defined(PHILIPS_HDD1630) \
|| defined(SANSA_FUZE) || defined(SANSA_E200V2) || defined(SANSA_FUZEV2) \
|| defined(TOSHIBA_GIGABEAT_S)
|| defined(TOSHIBA_GIGABEAT_S) || defined(PHILIPS_SA9200)
void (*lcd_yuv_set_options)(unsigned options);
#endif
#endif /* MEMORYSIZE > 2 */

2
apps/plugins/mpegplayer/mpeg_settings.h
View file

@ -8,7 +8,7 @@
#if defined(TOSHIBA_GIGABEAT_F) || defined(SANSA_E200) || defined(SANSA_C200) \
|| defined(IRIVER_H10) || defined(COWON_D2) || defined(PHILIPS_HDD1630) \
|| defined(SANSA_FUZE) || defined(SANSA_E200V2) || defined(SANSA_FUZEV2) \
|| defined(TOSHIBA_GIGABEAT_S)
|| defined(TOSHIBA_GIGABEAT_S) || defined(PHILIPS_SA9200)
#define MPEG_OPTION_DITHERING_ENABLED 1
#endif

1
firmware/SOURCES
View file

@ -700,6 +700,7 @@ target/arm/usb-fw-pp502x.c
target/arm/philips/sa9200/backlight-sa9200.c
target/arm/philips/sa9200/button-sa9200.c
target/arm/philips/sa9200/lcd-sa9200.c
target/arm/philips/sa9200/lcd-as-sa9200.S
target/arm/philips/sa9200/power-sa9200.c
target/arm/philips/sa9200/powermgmt-sa9200.c
#endif /* SIMULATOR */

590
firmware/target/arm/philips/sa9200/lcd-as-sa9200.S Normal file
View file

@ -0,0 +1,590 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007-2011 by Michael Sevakis
*
* Philips GoGear SA9200 LCD assembly routines
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/* This code should work in general for a Renesas type LCD interface
* connected to the "mono" bridge. TODO: Share it where possible.
*
* Dither is already prepared to be built for upright and rotated
* orientations. */
#include "config.h"
#include "cpu.h"
/****************************************************************************
* void lcd_write_yuv420_lines(unsigned char const * const src[3],
* int width,
* int stride);
*
* |R| |1.000000 -0.000001 1.402000| |Y'|
* |G| = |1.000000 -0.334136 -0.714136| |Pb|
* |B| |1.000000 1.772000 0.000000| |Pr|
* Scaled, normalized, rounded and tweaked to yield RGB 565:
* |R| |74 0 101| |Y' - 16| >> 9
* |G| = |74 -24 -51| |Cb - 128| >> 8
* |B| |74 128 0| |Cr - 128| >> 9
*
* Write four RGB565 pixels in the following order on each loop:
* 1 3 + > down
* 2 4 \/ left
*/
.section .icode, "ax", %progbits
.align 2
.global lcd_write_yuv420_lines
.type lcd_write_yuv420_lines, %function
lcd_write_yuv420_lines:
@ r0 = yuv_src
@ r1 = width
@ r2 = stride
stmfd sp!, { r4-r10, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@
mov r0, #0x70000000 @ r0 = LCD1_BASE_ADDR = 0x70003000
orr r0, r0, #0x3000 @
@
sub r2, r2, #1 @ Adjust stride because of increment
10: @ loop line @
ldrb r7, [r4], #1 @ r7 = *Y'_p++;
ldrb r8, [r5], #1 @ r8 = *Cb_p++;
ldrb r9, [r6], #1 @ r9 = *Cr_p++;
@
sub r7, r7, #16 @ r7 = Y = (Y' - 16)*74
add r12, r7, r7, asl #2 @ actually (Y' - 16)*37 and shift right
add r7, r12, r7, asl #5 @ by one less when adding - same for all
@
sub r8, r8, #128 @ Cb -= 128
sub r9, r9, #128 @ Cr -= 128
@
add r10, r9, r9, asl #1 @ r10 = Cr*51 + Cb*24
add r10, r10, r10, asl #4 @
add r10, r10, r8, asl #3 @
add r10, r10, r8, asl #4 @
@
add r14, r9, r9, asl #2 @ r9 = Cr*101
add r14, r14, r9, asl #5 @
add r9, r14, r9, asl #6 @
@
add r8, r8, #2 @ r8 = bu = (Cb*128 + 128) >> 8
mov r8, r8, asr #2 @
add r9, r9, #256 @ r9 = rv = (r8 + 256) >> 9
mov r9, r9, asr #9 @
rsb r10, r10, #128 @ r10 = guv = (-r9 + 128) >> 8
mov r10, r10, asr #8 @
@ compute R, G, and B
add r3, r8, r7, asr #8 @ r3 = b = (Y >> 9) + bu
add r14, r9, r7, asr #8 @ r14 = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r3, r14 @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r3, #31 @ clamp b
mvnhi r3, r3, asr #31 @
andhi r3, r3, #31 @
cmp r14, #31 @ clamp r
mvnhi r14, r14, asr #31 @
andhi r14, r14, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
orr r7, r3, r7, lsl #5 @ r7 = |00000000|00000000|00000ggg|gggbbbbb|
orr r7, r7, r14, lsl #11 @ r7 = |00000000|00000000|rrrrrggg|gggbbbbb|
mov r14, r7, lsr #8 @ r14 = |00000000|00000000|00000000|rrrrrggg|
@
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r14, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
@
sub r7, r12, #16 @ r7 = Y = (Y' - 16)*74
add r12, r7, r7, asl #2 @
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r3, r8, r7, asr #8 @ r3 = b = (Y >> 9) + bu
add r14, r9, r7, asr #8 @ r14 = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r3, r14 @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r3, #31 @ clamp b
mvnhi r3, r3, asr #31 @
andhi r3, r3, #31 @
cmp r14, #31 @ clamp r
mvnhi r14, r14, asr #31 @
andhi r14, r14, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
@
orr r7, r3, r7, lsl #5 @ r7 = |00000000|00000000|00000ggg|gggbbbbb|
orr r7, r7, r14, lsl #11 @ r7 = |00000000|00000000|rrrrrggg|gggbbbbb|
mov r14, r7, lsr #8 @ r14 = |00000000|00000000|00000000|rrrrrggg|
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r14, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
@
sub r7, r12, #16 @ r7 = Y = (Y' - 16)*74
add r12, r7, r7, asl #2 @
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r3, r8, r7, asr #8 @ r3 = b = (Y >> 9) + bu
add r14, r9, r7, asr #8 @ r14 = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r3, r14 @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r3, #31 @ clamp b
mvnhi r3, r3, asr #31 @
andhi r3, r3, #31 @
cmp r14, #31 @ clamp r
mvnhi r14, r14, asr #31 @
andhi r14, r14, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
orr r7, r3, r7, lsl #5 @ r7 = |00000000|00000000|00000ggg|gggbbbbb|
orr r7, r7, r14, lsl #11 @ r7 = |00000000|00000000|rrrrrggg|gggbbbbb|
mov r14, r7, lsr #8 @ r14 = |00000000|00000000|00000000|rrrrrggg|
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r14, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
@
sub r7, r12, #16 @ r7 = Y = (Y' - 16)*74
add r12, r7, r7, asl #2 @
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r3, r8, r7, asr #8 @ r3 = b = (Y >> 9) + bu
add r14, r9, r7, asr #8 @ r14 = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r3, r14 @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r3, #31 @ clamp b
mvnhi r3, r3, asr #31 @
andhi r3, r3, #31 @
cmp r14, #31 @ clamp r
mvnhi r14, r14, asr #31 @
andhi r14, r14, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
orr r7, r3, r7, lsl #5 @ r7 = |00000000|00000000|00000ggg|gggbbbbb|
orr r7, r7, r14, lsl #11 @ r7 = |00000000|00000000|rrrrrggg|gggbbbbb|
mov r14, r7, lsr #8 @ r14 = |00000000|00000000|00000000|rrrrrggg|
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r14, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
@
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmpc regs=r4-r10 @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
/****************************************************************************
* void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
* int width,
* int stride,
* int x_screen,
* int y_screen);
*
* |R| |1.000000 -0.000001 1.402000| |Y'|
* |G| = |1.000000 -0.334136 -0.714136| |Pb|
* |B| |1.000000 1.772000 0.000000| |Pr|
* Red scaled at twice g & b but at same precision to place it in correct
* bit position after multiply and leave instruction count lower.
* |R| |258 0 408| |Y' - 16|
* |G| = |149 -49 -104| |Cb - 128|
* |B| |149 258 0| |Cr - 128|
*
* Write four RGB565 pixels in the following order on each loop:
* 1 3 + > right/down
* 2 4 \/ down/left
*
* Kernel pattern for upright display:
* 5 3 4 2 +-> right
* 1 7 0 6 | down
* 4 2 5 3 \/
* 0 6 1 7
*
* Kernel pattern for clockwise rotated display:
* 2 6 3 7 +-> down
* 4 0 5 1 | left
* 3 7 2 6 \/
* 5 1 4 0
*/
.section .icode, "ax", %progbits
.align 2
.global lcd_write_yuv420_lines_odither
.type lcd_write_yuv420_lines_odither, %function
lcd_write_yuv420_lines_odither:
@ r0 = yuv_src
@ r1 = width
@ r2 = strideS
@ r3 = x_screen
@ [sp] = y_screen
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@
ldr r0, [sp, #36] @ Line up pattern and kernel quadrant
eor r14, r3, r0 @
and r14, r14, #0x2 @
mov r14, r14, lsl #6 @ 0x00 or 0x80
@
mov r0, #0x70000000 @ r0 = LCD1_BASE_ADDR = 0x70003000
orr r0, r0, #0x3000 @
@
sub r2, r2, #1 @ Adjust stride because of increment
10: @ loop line @
@
ldrb r7, [r4], #1 @ r7 = *Y'_p++;
ldrb r8, [r5], #1 @ r8 = *Cb_p++;
ldrb r9, [r6], #1 @ r9 = *Cr_p++;
@
eor r14, r14, #0x80 @ flip pattern quadrant
@
sub r7, r7, #16 @ r7 = Y = (Y' - 16)*149
add r12, r7, r7, asl #2 @
add r12, r12, r12, asl #4 @
add r7, r12, r7, asl #6 @
@
sub r8, r8, #128 @ Cb -= 128
sub r9, r9, #128 @ Cr -= 128
@
add r10, r8, r8, asl #4 @ r10 = guv = Cr*104 + Cb*49
add r10, r10, r8, asl #5 @
add r10, r10, r9, asl #3 @
add r10, r10, r9, asl #5 @
add r10, r10, r9, asl #6 @
@
mov r8, r8, asl #1 @ r8 = bu = Cb*258
add r8, r8, r8, asl #7 @
@
add r9, r9, r9, asl #1 @ r9 = rv = Cr*408
add r9, r9, r9, asl #4 @
mov r9, r9, asl #3 @
@
@ compute R, G, and B
add r3, r8, r7 @ r3 = b' = Y + bu
add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
rsb r7, r10, r7 @ r7 = g' = Y + guv
@
@ r8 = bu, r9 = rv, r10 = guv
@
sub r12, r3, r3, lsr #5 @ r3 = 31/32*b + b/256
add r3, r12, r3, lsr #8 @
@
sub r12, r11, r11, lsr #5 @ r11 = 31/32*r + r/256
add r11, r12, r11, lsr #8 @
@
sub r12, r7, r7, lsr #6 @ r7 = 63/64*g + g/256
add r7, r12, r7, lsr #8 @
@
#if LCD_WIDTH >= LCD_HEIGHT
add r12, r14, #0x200 @
#else
add r12, r14, #0x100 @
#endif
@
add r3, r3, r12 @ b = r3 + delta
add r11, r11, r12, lsl #1 @ r = r11 + delta*2
add r7, r7, r12, lsr #1 @ g = r7 + delta/2
@
orr r12, r3, r11, asr #1 @ check if clamping is needed...
orr r12, r12, r7 @ ...at all
movs r12, r12, asr #15 @
beq 15f @ no clamp @
movs r12, r3, asr #15 @ clamp b
mvnne r3, r12, lsr #15 @
andne r3, r3, #0x7c00 @ mask b only if clamped
movs r12, r11, asr #16 @ clamp r
mvnne r11, r12, lsr #16 @
movs r12, r7, asr #15 @ clamp g
mvnne r7, r12, lsr #15 @
15: @ no clamp @
@
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
and r11, r11, #0xf800 @ r11 = |00000000|00000000|rrrrrggg|gggbbbbb|
and r7, r7, #0x7e00 @
orr r11, r11, r7, lsr #4 @
orr r11, r11, r3, lsr #10 @
mov r7, r11, lsr #8 @ r7 = |00000000|00000000|00000000|rrrrrggg|
@
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r11, [r0, #0x10] @
@
sub r7, r12, #16 @ r7 = Y = (Y' - 16)*149
add r12, r7, r7, asl #2 @
add r12, r12, r12, asl #4 @
add r7, r12, r7, asl #6 @
@ compute R, G, and B
add r3, r8, r7 @ r3 = b' = Y + bu
add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
rsb r7, r10, r7 @ r7 = g' = Y + guv
@
sub r12, r3, r3, lsr #5 @ r3 = 31/32*b' + b'/256
add r3, r12, r3, lsr #8 @
@
sub r12, r11, r11, lsr #5 @ r11 = 31/32*r' + r'/256
add r11, r12, r11, lsr #8 @
@
sub r12, r7, r7, lsr #6 @ r7 = 63/64*g' + g'/256
add r7, r12, r7, lsr #8 @
@
#if LCD_WIDTH >= LCD_HEIGHT
@ This element is zero - use r14 @
@
add r3, r3, r14 @ b = r3 + delta
add r11, r11, r14, lsl #1 @ r = r11 + delta*2
add r7, r7, r14, lsr #1 @ g = r7 + delta/2
#else
add r12, r14, #0x200 @
@
add r3, r3, r12 @ b = r3 + delta
add r11, r11, r12, lsl #1 @ r = r11 + delta*2
add r7, r7, r12, lsr #1 @ g = r7 + delta/2
#endif
@
orr r12, r3, r11, asr #1 @ check if clamping is needed...
orr r12, r12, r7 @ ...at all
movs r12, r12, asr #15 @
beq 15f @ no clamp @
movs r12, r3, asr #15 @ clamp b
mvnne r3, r12, lsr #15 @
andne r3, r3, #0x7c00 @ mask b only if clamped
movs r12, r11, asr #16 @ clamp r
mvnne r11, r12, lsr #16 @
movs r12, r7, asr #15 @ clamp g
mvnne r7, r12, lsr #15 @
15: @ no clamp @
@
ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
@
and r11, r11, #0xf800 @ r11 = |00000000|00000000|rrrrrggg|gggbbbbb|
and r7, r7, #0x7e00 @
orr r11, r11, r7, lsr #4 @
orr r11, r11, r3, lsr #10 @
mov r7, r11, lsr #8 @ r7 = |00000000|00000000|00000000|rrrrrggg|
@
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r11, [r0, #0x10] @
@
sub r7, r12, #16 @ r7 = Y = (Y' - 16)*149
add r12, r7, r7, asl #2 @
add r12, r12, r12, asl #4 @
add r7, r12, r7, asl #6 @
@ compute R, G, and B
add r3, r8, r7 @ r3 = b' = Y + bu
add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
rsb r7, r10, r7 @ r7 = g' = Y + guv
@
@ r8 = bu, r9 = rv, r10 = guv
@
sub r12, r3, r3, lsr #5 @ r3 = 31/32*b' + b'/256
add r3, r12, r3, lsr #8 @
@
sub r12, r11, r11, lsr #5 @ r11 = 31/32*r' + r'/256
add r11, r12, r11, lsr #8 @
@
sub r12, r7, r7, lsr #6 @ r7 = 63/64*g' + g'/256
add r7, r12, r7, lsr #8 @
@
#if LCD_WIDTH >= LCD_HEIGHT
add r12, r14, #0x100 @
#else
add r12, r14, #0x300 @
#endif
@
add r3, r3, r12 @ b = r3 + delta
add r11, r11, r12, lsl #1 @ r = r11 + delta*2
add r7, r7, r12, lsr #1 @ g = r7 + delta/2
@
orr r12, r3, r11, asr #1 @ check if clamping is needed...
orr r12, r12, r7 @ ...at all
movs r12, r12, asr #15 @
beq 15f @ no clamp @
movs r12, r3, asr #15 @ clamp b
mvnne r3, r12, lsr #15 @
andne r3, r3, #0x7c00 @ mask b only if clamped
movs r12, r11, asr #16 @ clamp r
mvnne r11, r12, lsr #16 @
movs r12, r7, asr #15 @ clamp g
mvnne r7, r12, lsr #15 @
15: @ no clamp @
@
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
and r11, r11, #0xf800 @ r11 = |00000000|00000000|rrrrrggg|gggbbbbb|
and r7, r7, #0x7e00 @
orr r11, r11, r7, lsr #4 @
orr r11, r11, r3, lsr #10 @
mov r7, r11, lsr #8 @ r7 = |00000000|00000000|00000000|rrrrrggg|
@
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r11, [r0, #0x10] @
@
sub r7, r12, #16 @ r7 = Y = (Y' - 16)*149
add r12, r7, r7, asl #2 @
add r12, r12, r12, asl #4 @
add r7, r12, r7, asl #6 @
@ compute R, G, and B
add r3, r8, r7 @ r3 = b' = Y + bu
add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
rsb r7, r10, r7 @ r7 = g' = Y + guv
@
sub r12, r3, r3, lsr #5 @ r3 = 31/32*b + b/256
add r3, r12, r3, lsr #8 @
@
sub r12, r11, r11, lsr #5 @ r11 = 31/32*r + r/256
add r11, r12, r11, lsr #8 @
@
sub r12, r7, r7, lsr #6 @ r7 = 63/64*g + g/256
add r7, r12, r7, lsr #8 @
@
#if LCD_WIDTH >= LCD_HEIGHT
add r12, r14, #0x300 @
@
add r3, r3, r12 @ b = r3 + delta
add r11, r11, r12, lsl #1 @ r = r11 + delta*2
add r7, r7, r12, lsr #1 @ g = r7 + delta/2
#else
@ This element is zero - use r14 @
@
add r3, r3, r14 @ b = r3 + delta
add r11, r11, r14, lsl #1 @ r = r11 + delta*2
add r7, r7, r14, lsr #1 @ g = r7 + delta/2
#endif
@
orr r12, r3, r11, asr #1 @ check if clamping is needed...
orr r12, r12, r7 @ ...at all
movs r12, r12, asr #15 @
beq 15f @ no clamp @
movs r12, r3, asr #15 @ clamp b
mvnne r3, r12, lsr #15 @
andne r3, r3, #0x7c00 @ mask b only if clamped
movs r12, r11, asr #16 @ clamp r
mvnne r11, r12, lsr #16 @
movs r12, r7, asr #15 @ clamp g
mvnne r7, r12, lsr #15 @
15: @ no clamp @
@
and r11, r11, #0xf800 @ r11 = |00000000|00000000|rrrrrggg|gggbbbbb|
and r7, r7, #0x7e00 @
orr r11, r11, r7, lsr #4 @
orr r11, r11, r3, lsr #10 @
mov r7, r11, lsr #8 @ r7 = |00000000|00000000|00000000|rrrrrggg|
@
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r7, [r0, #0x10] @
20: @
ldr r3, [r0] @
tst r3, #LCD1_BUSY_MASK @
bne 20b @
strb r11, [r0, #0x10] @
@
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmpc regs=r4-r11 @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither

111
firmware/target/arm/philips/sa9200/lcd-sa9200.c
View file

@ -97,9 +97,9 @@ static void lcd_send_data(unsigned data)
static void lcd_send_command(unsigned cmd)
{
lcd_wait_write();
LCD1_CMD = cmd >> 8;
LCD1_CMD = 0;
lcd_wait_write();
LCD1_CMD = cmd & 0xff;
LCD1_CMD = cmd;
}
static void lcd_write_reg(unsigned reg, unsigned data)
@ -401,25 +401,101 @@ void lcd_yuv_set_options(unsigned options)
}
/* Performance function to blit a YUV bitmap directly to the LCD */
void lcd_write_yuv420_lines(unsigned char const * const src[3],
int width,
int stride);
void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
int width,
int stride,
int x_screen,
int y_screen);
void lcd_blit_yuv(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height)
{
(void)src;
(void)src_x;
(void)src_y;
(void)stride;
(void)x;
(void)y;
(void)width;
(void)height;
const unsigned char *yuv_src[3];
const unsigned char *ysrc_max;
int options;
if (!display_on)
return;
width &= ~1;
height &= ~1;
/* calculate the drawing region */
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
/* convert YUV coordinates to screen coordinates */
y = LCD_WIDTH - 1 - y;
/* 2px strip: cursor moves left, then down in gram */
/* BGR=1, MDT1-0=00, I/D1-0=10, AM=0 */
lcd_write_reg(R_ENTRY_MODE, 0x1020);
yuv_src[0] = src[0] + src_y * stride + src_x;
yuv_src[1] = src[1] + (src_y * stride >> 2) + (src_x >> 1);
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
ysrc_max = yuv_src[0] + height * stride;
/* cache options setting */
options = lcd_yuv_options;
do
{
/* max horiz << 8 | start horiz */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y << 8) | (y - 1));
/* position cursor (set AD0-AD15) */
lcd_write_reg(R_RAM_ADDR_SET, (x << 8) | y);
/* start drawing */
lcd_send_command(R_WRITE_DATA_2_GRAM);
if (options & LCD_YUV_DITHER)
{
lcd_write_yuv420_lines_odither(yuv_src, width, stride,
y, x);
}
else
{
lcd_write_yuv420_lines(yuv_src, width, stride);
}
y -= 2; /* move strip by "down" 2 px */
yuv_src[0] += stride << 1;
yuv_src[1] += stride >> 1;
yuv_src[2] += stride >> 1;
}
while (yuv_src[0] < ysrc_max);
/* back to normal right, then down cursor in gram */
/* BGR=1, MDT1-0=00, I/D1-0=11, AM=0 */
lcd_write_reg(R_ENTRY_MODE, 0x1030);
}
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_update(void)
{
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
const fb_data *addr, *end;
if (!display_on)
return;
addr = &lcd_framebuffer[0][0];
end = &lcd_framebuffer[LCD_HEIGHT - 1][LCD_WIDTH];
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (LCD_WIDTH - 1) << 8);
lcd_write_reg(R_VERT_RAM_ADDR_POS, (LCD_HEIGHT - 1) << 8);
lcd_write_reg(R_RAM_ADDR_SET, 0);
lcd_send_command(R_WRITE_DATA_2_GRAM);
do
{
lcd_send_data(*addr++);
}
while (addr < end);
}
/* Update a fraction of the display. */
@ -432,18 +508,23 @@ void lcd_update_rect(int x, int y, int width, int height)
if (x + width > LCD_WIDTH)
width = LCD_WIDTH - x;
if (x < 0)
width += x, x = 0;
if (width <= 0)
return; /* Nothing left to do. */
if (y + height > LCD_HEIGHT)
height = LCD_HEIGHT - y;
if ((width <= 0) || (height <= 0))
if (y < 0)
height += y, y = 0;
if (height <= 0)
return; /* Nothing left to do. */
addr = &lcd_framebuffer[y][x];
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((y + height -1) << 8) | y);
lcd_write_reg(R_RAM_ADDR_SET, ((y & 0xff) << 8) | (x & 0xff));
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((y + height - 1) << 8) | y);
lcd_write_reg(R_RAM_ADDR_SET, (y << 8) | x);
lcd_send_command(R_WRITE_DATA_2_GRAM);
do {