From 287d6223d3e4f90043e5fd36cf49d7267b53023d Mon Sep 17 00:00:00 2001 From: Michael Sevakis Date: Tue, 25 Sep 2007 02:59:42 +0000 Subject: Dithering option for mpegplayer on gigabeat-f/x and e200. Assembly IDCT for ARm just to make it all work more nicely. Move UI simulator YUV code to its core to adapt it. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14851 a1c6a512-1295-4272-9138-f99709370657 --- .../target/arm/sandisk/sansa-e200/lcd-as-e200.S | 279 --------------------- 1 file changed, 279 deletions(-) delete mode 100644 firmware/target/arm/sandisk/sansa-e200/lcd-as-e200.S (limited to 'firmware/target/arm/sandisk/sansa-e200/lcd-as-e200.S') diff --git a/firmware/target/arm/sandisk/sansa-e200/lcd-as-e200.S b/firmware/target/arm/sandisk/sansa-e200/lcd-as-e200.S deleted file mode 100644 index 4926c7fa79..0000000000 --- a/firmware/target/arm/sandisk/sansa-e200/lcd-as-e200.S +++ /dev/null @@ -1,279 +0,0 @@ -/*************************************************************************** - * __________ __ ___. - * Open \______ \ ____ ____ | | _\_ |__ _______ ___ - * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / - * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < - * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ - * \/ \/ \/ \/ \/ - * $Id$ - * - * Copyright (C) 2007 by Michael Sevakis - * - * All files in this archive are subject to the GNU General Public License. - * See the file COPYING in the source tree root for full license agreement. - * - * 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_copy_buffer_rect(fb_data *dst, fb_data *src, int width, - * int height); - */ - .section .icode, "ax", %progbits - .align 2 - .global lcd_copy_buffer_rect - .type lcd_copy_buffer_rect, %function - @ r0 = dst - @ r1 = src - @ r2 = width - @ r3 = height -lcd_copy_buffer_rect: @ - stmfd sp!, { r4-r12, lr } @ save non-scratch regs - mov r5, r2 @ r5 = cached width - rsb r4, r2, #LCD_WIDTH @ r4 = LCD_WIDTH - width -10: @ copy line @ - subs r2, r5, #1 @ r2 = width - 1 - beq 40f @ finish line @ one halfword? skip to trailing copy - tst r0, #2 @ word aligned? - beq 20f @ rem copy @ yes? skip to word copy - ldrh r6, [r1], #2 @ copy leading halfword - subs r2, r2, #1 @ - strh r6, [r0], #2 @ - ble 40f @ finish line @ next line if lt or finish - @ trailing halfword if eq -20: @ rem copy @ - add r14, r2, #1 @ get remaining width mod 16 after word - @ align (rw) - and r14, r14, #0xe @ r14 = 0 (16), 2, 4, 6, 8, 10, 12, 14 - add pc, pc, r14, lsl #3 @ branch to 32-byte align - nop @ - b 30f @ rw % 16 = 0 or 1? use octword loop - nop @ - nop @ - nop @ - ldr r6, [r1], #4 @ rw % 16 = 2 or 3 - subs r2, r2, #2 @ - str r6, [r0], #4 @ - b 25f @ copy up done @ - ldmia r1!, { r6-r7 } @ rw % 16 = 4 or 5 - subs r2, r2, #4 @ - stmia r0!, { r6-r7 } @ - b 25f @ copy up done @ - ldmia r1!, { r6-r8 } @ rw % 16 = 6 or 7 - subs r2, r2, #6 @ - stmia r0!, { r6-r8 } @ - b 25f @ copy up done @ - ldmia r1!, { r6-r9 } @ rw % 16 = 8 or 9 - subs r2, r2, #8 @ - stmia r0!, { r6-r9 } @ - b 25f @ copy up done @ - ldmia r1!, { r6-r10 } @ rw % 16 = 10 or 11 - subs r2, r2, #10 @ - stmia r0!, { r6-r10 } @ - b 25f @ copy up done @ - ldmia r1!, { r6-r11 } @ rw % 16 = 12 or 13 - subs r2, r2, #12 @ - stmia r0!, { r6-r11 } @ - b 25f @ copy up done @ - ldmia r1!, { r6-r12 } @ rw % 16 = 14 or 15 - subs r2, r2, #14 @ - stmia r0!, { r6-r12 } @ -25: @ copy up done @ - ble 40f @ finish line @ no 32-byte segments remaining? -30: @ octword loop @ copy 16 pixels per loop - ldmia r1!, { r6-r12, r14 } @ - subs r2, r2, #16 @ - stmia r0!, { r6-r12, r14 } @ - bgt 30b @ octword loop @ -40: @ finish line @ - ldreqh r6, [r1], #2 @ finish last halfword if eq ... - add r1, r1, r4, lsl #1 @ - streqh r6, [r0], #2 @ ... - add r0, r0, r4, lsl #1 @ - subs r3, r3, #1 @ next line - bgt 10b @ copy line @ - ldmfd sp!, { r4-r12, pc } @ restore regs and return - .size lcd_copy_buffer_rect, .-lcd_copy_buffer_rect - - -/**************************************************************************** - * void lcd_write_yuv_420_lines(fb_data *dst, - * 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 = dst - @ r1 = yuv_src - @ r2 = width - @ r3 = stride - stmfd sp!, { r4-r12 } @ save non-scratch - ldmia r1, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p - @ r5 = yuv_src[1] = Cb_p - @ r6 = yuv_src[2] = Cr_p - @ r1 = scratch -10: @ loop line @ - ldrb r7, [r4] @ 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 = (r9 + 256) >> 9 - mov r9, r9, asr #9 @ - rsb r10, r10, #128 @ r10 = guv = (-r10 + 128) >> 8 - mov r10, r10, asr #8 @ - @ compute R, G, and B - add r1, r8, r7, asr #8 @ r1 = 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, r1, r11 @ check if clamping is needed... - orr r12, r12, r7, asr #1 @ ...at all - cmp r12, #31 @ - bls 15f @ no clamp @ - cmp r1, #31 @ clamp b - mvnhi r1, r1, asr #31 @ - andhi r1, r1, #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 r12, r1, r7, lsl #5 @ r4 |= (g << 5) - ldrb r7, [r4, r3] @ r7 = Y' = *(Y'_p + stride) - orr r12, r12, r11, lsl #11 @ r4 = b | (r << 11) - strh r12, [r0] @ store pixel - @ - sub r7, r7, #16 @ r7 = Y = (Y' - 16)*74 - add r12, r7, r7, asl #2 @ - add r7, r12, r7, asl #5 @ - @ compute R, G, and B - add r1, r8, r7, asr #8 @ r1 = 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, r1, r11 @ check if clamping is needed... - orr r12, r12, r7, asr #1 @ ...at all - cmp r12, #31 @ - bls 15f @ no clamp @ - cmp r1, #31 @ clamp b - mvnhi r1, r1, asr #31 @ - andhi r1, r1, #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 r12, r1, r11, lsl #11 @ r12 = b | (r << 11) - orr r12, r12, r7, lsl #5 @ r12 |= (g << 5) - ldrb r7, [r4, #1]! @ r7 = Y' = *(++Y'_p) - strh r12, [r0, #-2] @ store pixel - add r0, r0, #2*LCD_WIDTH @ - @ - sub r7, r7, #16 @ r7 = Y = (Y' - 16)*74 - add r12, r7, r7, asl #2 @ - add r7, r12, r7, asl #5 @ - @ compute R, G, and B - add r1, r8, r7, asr #8 @ r1 = 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, r1, r11 @ check if clamping is needed... - orr r12, r12, r7, asr #1 @ ...at all - cmp r12, #31 @ - bls 15f @ no clamp @ - cmp r1, #31 @ clamp b - mvnhi r1, r1, asr #31 @ - andhi r1, r1, #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 r12, r1, r7, lsl #5 @ r12 = b | (g << 5) - ldrb r7, [r4, r3] @ r7 = Y' = *(Y'_p + stride) - orr r12, r12, r11, lsl #11 @ r12 |= (r << 11) - strh r12, [r0] @ store pixel - @ - sub r7, r7, #16 @ r7 = Y = (Y' - 16)*74 - add r12, r7, r7, asl #2 @ - add r7, r12, r7, asl #5 @ - @ compute R, G, and B - add r1, r8, r7, asr #8 @ r1 = 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, r1, r11 @ check if clamping is needed... - orr r12, r12, r7, asr #1 @ ...at all - cmp r12, #31 @ - bls 15f @ no clamp @ - cmp r1, #31 @ clamp b - mvnhi r1, r1, asr #31 @ - andhi r1, r1, #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 r12, r1, r11, lsl #11 @ r12 = b | (r << 11) - orr r12, r12, r7, lsl #5 @ r12 |= (g << 5) - strh r12, [r0, #-2] @ store pixel - add r0, r0, #2*LCD_WIDTH @ - add r4, r4, #1 @ - @ - subs r2, r2, #2 @ subtract block from width - bgt 10b @ loop line @ - @ - ldmfd sp!, { r4-r12 } @ restore registers and return - bx lr @ - .size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines -- cgit v1.2.3