From fe6aa21e9eb88f49005863efd2003d0982920048 Mon Sep 17 00:00:00 2001 From: Aidan MacDonald Date: Mon, 3 Oct 2022 10:17:41 +0100 Subject: Remove YUV blitting functions and LCD modes None of this is needed now that mpegplayer is gone. Change-Id: I360366db8513e4d988021e8d7b7d8eb09930efb8 --- firmware/target/arm/samsung/yh925/lcd-as-yh925.S | 538 ----------------------- firmware/target/arm/samsung/yh925/lcd-yh925.c | 94 ---- 2 files changed, 632 deletions(-) delete mode 100644 firmware/target/arm/samsung/yh925/lcd-as-yh925.S (limited to 'firmware/target/arm/samsung/yh925') diff --git a/firmware/target/arm/samsung/yh925/lcd-as-yh925.S b/firmware/target/arm/samsung/yh925/lcd-as-yh925.S deleted file mode 100644 index 8ac8b4289f..0000000000 --- a/firmware/target/arm/samsung/yh925/lcd-as-yh925.S +++ /dev/null @@ -1,538 +0,0 @@ -/*************************************************************************** - * __________ __ ___. - * Open \______ \ ____ ____ | | _\_ |__ _______ ___ - * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / - * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < - * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ - * \/ \/ \/ \/ \/ - * $Id$ - * - * Copyright (C) 2007-2008 by Michael Sevakis - * - * H10 20GB 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. - * - ****************************************************************************/ - -#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-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 - @ - mov r0, #0x7000000c @ r0 = &LCD2_PORT = 0x70008a0c - add r0, r0, #0x8a00 @ - mov r14, #LCD2_DATA_MASK @ - @ - 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 r11, r9, r9, asl #2 @ r9 = Cr*101 - add r11, r11, r9, asl #5 @ - add r9, r11, 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 r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv - add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv - @ - orr r12, r3, r11 @ 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 r11, #31 @ clamp r - mvnhi r11, r11, asr #31 @ - andhi r11, r11, #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 r3, r3, r11, lsl #11 @ r3 = b | (r << 11) - orr r3, r3, r7, lsl #5 @ r3 |= (g << 5) - @ - orr r7, r14, r3, lsr #8 @ store pixel - orr r11, r14, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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 r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv - add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv - @ - orr r12, r3, r11 @ 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 r11, #31 @ clamp r - mvnhi r11, r11, asr #31 @ - andhi r11, r11, #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 r3, r3, r11, lsl #11 @ r3 = b | (r << 11) - orr r3, r3, r7, lsl #5 @ r3 |= (g << 5) - @ - orr r7, r14, r3, lsr #8 @ store pixel - orr r11, r14, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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 r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv - add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv - @ - orr r12, r3, r11 @ 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 r11, #31 @ clamp r - mvnhi r11, r11, asr #31 @ - andhi r11, r11, #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 r3, r3, r7, lsl #5 @ r3 = b | (g << 5) - orr r3, r3, r11, lsl #11 @ r3 |= (r << 11) - @ - orr r7, r14, r3, lsr #8 @ store pixel - orr r11, r14, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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 r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv - add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv - @ - orr r12, r3, r11 @ 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 r11, #31 @ clamp r - mvnhi r11, r11, asr #31 @ - andhi r11, r11, #31 @ - cmp r7, #63 @ clamp g - mvnhi r7, r7, asr #31 @ - andhi r7, r7, #63 @ -15: @ no clamp @ - @ - orr r3, r3, r11, lsl #11 @ r3 = b | (r << 11) - orr r3, r3, r7, lsl #5 @ r3 |= (g << 5) - @ - orr r7, r14, r3, lsr #8 @ store pixel - orr r11, r14, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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, .-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 + > down - * 2 4 \/ left - * - * Kernel pattern (raw|use order): - * 5 3 4 2 row0 row2 > down - * 1 7 0 6 | 5 1 3 7 4 0 2 6 col0 left - * 4 2 5 3 | 4 0 2 6 5 1 3 7 col2 \/ - * 0 6 1 7 - */ - .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 = stride - @ 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, #0x7000000c @ r0 = &LCD2_PORT = 0x70008a0c - add r0, r0, #0x8a00 @ - @ - 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 @ - @ - 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 - @ - 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 @ pack pixel - and r7, r7, #0x7e00 @ r3 = pixel = (r & 0xf800) | - orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) | - orr r3, r11, r3, lsr #10 @ (b >> 10) - @ - mov r11, #LCD2_DATA_MASK @ store pixel - orr r7, r11, r3, lsr #8 @ - orr r11, r11, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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 @ - @ - @ 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 - @ - 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 @ pack pixel - and r7, r7, #0x7e00 @ r3 = pixel = (r & 0xf800) | - orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) | - orr r3, r11, r3, lsr #10 @ (b >> 10) - @ - mov r11, #LCD2_DATA_MASK @ store pixel - orr r7, r11, r3, lsr #8 @ - orr r11, r11, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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 @ - @ - add r12, r14, #0x100 @ - @ - 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 @ pack pixel - and r7, r7, #0x7e00 @ r3 = pixel = (r & 0xf800) | - orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) | - orr r3, r11, r3, lsr #10 @ (b >> 10) - @ - mov r11, #LCD2_DATA_MASK @ store pixel - orr r7, r11, r3, lsr #8 @ - orr r11, r11, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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 @ - @ - 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 - @ - 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 @ pack pixel - and r7, r7, #0x7e00 @ r3 = pixel = (r & 0xf800) | - orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) | - orr r3, r11, r3, lsr #10 @ (b >> 10) - @ - mov r11, #LCD2_DATA_MASK @ store pixel - orr r7, r11, r3, lsr #8 @ - orr r11, r11, r3 @ -20: @ - ldr r3, [r0] @ - tst r3, #LCD2_BUSY_MASK @ - bne 20b @ - str r7, [r0] @ - str r11, [r0] @ - @ - 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 diff --git a/firmware/target/arm/samsung/yh925/lcd-yh925.c b/firmware/target/arm/samsung/yh925/lcd-yh925.c index 93bfb3a5f2..e2b3ae3694 100644 --- a/firmware/target/arm/samsung/yh925/lcd-yh925.c +++ b/firmware/target/arm/samsung/yh925/lcd-yh925.c @@ -37,8 +37,6 @@ static unsigned short disp_control_rev; /* Contrast setting << 8 */ static int lcd_contrast; -static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0; - /* Forward declarations */ #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP) static void lcd_display_off(void); @@ -510,98 +508,6 @@ bool lcd_active(void) /*** update functions ***/ -void lcd_yuv_set_options(unsigned options) -{ - lcd_yuv_options = options; -} - -/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */ -extern void lcd_write_yuv420_lines(unsigned char const * const src[3], - int width, - int stride); -extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3], - int width, - int stride, - int x_screen, /* To align dither pattern */ - int y_screen); - -/* Performance function to blit a YUV bitmap directly to the LCD */ -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) -{ - const unsigned char *yuv_src[3]; - const unsigned char *ysrc_max; - int y0; - int options; - - /* NOT MODIFIED FOR THE YH-925 */ - - if (!display_on) - return; - - width &= ~1; - height &= ~1; - - x += x_offset; - - /* calculate the drawing region */ - - /* The 20GB LCD is actually 128x160 but rotated 90 degrees so the origin - * is actually the bottom left and horizontal and vertical are swapped. - * Rockbox expects the origin to be the top left so we need to use - * 127 - y instead of just y */ - - /* max vert << 8 | start vert */ - lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x); - - y0 = LCD_HEIGHT - 1 - y + y_offset; - - /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=0, LG2-0=000 */ - 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; - - options = lcd_yuv_options; - - do - { - /* max horiz << 8 | start horiz */ - lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y0 << 8) | (y0 - 1)); - - /* position cursor (set AD0-AD15) */ - /* start vert << 8 | start horiz */ - lcd_write_reg(R_RAM_ADDR_SET, (x << 8) | y0); - - /* start drawing */ - lcd_send_cmd(R_WRITE_DATA_2_GRAM); - - if (options & LCD_YUV_DITHER) - { - lcd_write_yuv420_lines_odither(yuv_src, width, stride, - x, y); - y -= 2; - } - else - { - lcd_write_yuv420_lines(yuv_src, width, stride); - } - - y0 -= 2; - yuv_src[0] += stride << 1; - yuv_src[1] += stride >> 1; - yuv_src[2] += stride >> 1; - } - while (yuv_src[0] < ysrc_max); - - /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=1, LG2-0=000 */ - lcd_write_reg(R_ENTRY_MODE, 0x1028); -} - - /* Update a fraction of the display. */ void lcd_update_rect(int x0, int y0, int width, int height) { -- cgit v1.2.3