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Submit FS#11843 v17. Integrate YUV-blitting of nano 2G to nano1G/color LCD driver. Additionally refactor RGB and YUV screen updates to use same code fragments and save some binsize. YUV speedup is +3-4%, RGB 1/4 screen +2%.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28944 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann
parent
cacc64a4fe
commit
9f78d38097
2 changed files with 372 additions and 311 deletions
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@ -7,7 +7,7 @@
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* \/ \/ \/ \/ \/
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* $Id:$
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*
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* Copyright (C) 2010 by Andree Buschmann
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* Copyright (C) 2010-2011 by Andree Buschmann
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*
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* Generic asm helper function used by YUV blitting.
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*
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@ -24,129 +24,264 @@
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#include "config.h"
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#include "cpu.h"
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.section .icode, "ax", %progbits
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/****************************************************************************
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* #define FORCE_FIFO_WAIT
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*
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* This is not needed in YUV blitting when the LCD IF is fast enough. In this
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* case YUV-to-RGB conversion per pixel needs longer than the transfer of a
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* pixel via the LCD IF.
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****************************************************************************/
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#include "config.h"
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/* Set FIFO wait for both iPod Color and iPod nano1G until we know for which
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* devices we can switch this off. */
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#define FORCE_FIFO_WAIT
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.section .icode, "ax", %progbits
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/****************************************************************************
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* void lcd_yuv_write_inner_loop(unsigned char const * const ysrc,
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* unsigned char const * const usrc,
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* unsigned char const * const vsrc,
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* int width);
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*
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* YUV- > RGB565 conversion
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* |R| |1.000000 -0.000001 1.402000| |Y'|
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* |G| = |1.000000 -0.334136 -0.714136| |Pb|
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* |B| |1.000000 1.772000 0.000000| |Pr|
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* Scaled, normalized, rounded and tweaked to yield RGB 565:
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* |R| |74 0 101| |Y' - 16| >> 9
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* |G| = |74 -24 -51| |Cb - 128| >> 8
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* |B| |74 128 0| |Cr - 128| >> 9
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*
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*/
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* extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
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* const unsigned LCD_BASE,
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* int width,
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* int stride);
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*
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* Conversion from Motion JPEG and MPEG Y'PbPr to RGB is:
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* |R| |1.164 0.000 1.596| |Y' - 16|
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* |G| = |1.164 -0.391 -0.813| |Pb - 128|
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* |B| |1.164 2.018 0.000| |Pr - 128|
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*
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* Scaled, normalized, rounded and tweaked to yield RGB 565:
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* |R| |74 0 101| |Y' - 16| >> 9
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* |G| = |74 -24 -51| |Cb - 128| >> 8
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* |B| |74 128 0| |Cr - 128| >> 9
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*
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* Converts two lines from YUV to RGB565 and writes to LCD at once. First loop
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* loads Cb/Cr, calculates the chroma offset and saves them to buffer. Within
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* the second loop these chroma offset are reloaded from buffer. Within each
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* loop two pixels are calculated and written to LCD.
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*/
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.align 2
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.global lcd_yuv_write_inner_loop
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.type lcd_yuv_write_inner_loop, %function
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.global lcd_write_yuv420_lines
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.type lcd_write_yuv420_lines, %function
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lcd_write_yuv420_lines:
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/* r0 = src = yuv_src */
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/* r1 = dst = LCD_BASE */
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/* r2 = width */
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/* r3 = stride */
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stmfd sp!, { r4-r10, lr } /* save non-scratch */
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ldmia r0, { r9, r10, r12 } /* r9 = yuv_src[0] = Y'_p */
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/* r10 = yuv_src[1] = Cb_p */
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/* r12 = yuv_src[2] = Cr_p */
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add r3, r9, r3 /* r3 = &ysrc[stride] */
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add r4, r2, r2, asr #1 /* chroma buffer lenght = width/2 *3 */
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mov r4, r4, asl #2 /* use words for str/ldm possibility */
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add r4, r4, #19 /* plus room for 4 additional words, */
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bic r4, r4, #3 /* rounded up to multiples of 4 byte */
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sub sp, sp, r4 /* and allocate on stack */
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stmia sp, {r1-r4} /* LCD_BASE, width, &ysrc[stride], stack_alloc */
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lcd_yuv_write_inner_loop:
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@ r0 = ysrc
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@ r1 = usrc
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@ r2 = vsrc
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@ r3 = width
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stmfd sp!, { r4-r11, lr } @ save regs
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mov r4, #0x70000000 @ r4 = LCD2_BLOCK_CTRL - 0x20
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add r4, r4, #0x8a00 @
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add r5, r4, #0x100 @ r5 = LCD2_BLOCK_DATA
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10: @ loop
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mov r7, r2 /* r7 = loop count */
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add r8, sp, #16 /* chroma buffer */
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add lr, r1, #0x100 /* LCD data port = LCD2_BASE + 0x100 */
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ldrb r7, [r1], #1 @ *usrc++
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ldrb r8, [r2], #1 @ *vsrc++
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/* 1st loop start */
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10: /* loop start */
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sub r7, r7, #128 @ Cb -= 128
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sub r8, r8, #128 @ Cr -= 128
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ldrb r0, [r10], #1 /* r0 = *usrc++ = *Cb_p++ */
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ldrb r1, [r12], #1 /* r1 = *vsrc++ = *Cr_p++ */
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add r10, r8, r8, asl #2 @ Cr*101
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add r10, r10, r8, asl #5
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add r10, r10, r8, asl #6
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sub r0, r0, #128 /* r0 = Cb-128 */
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sub r1, r1, #128 /* r1 = Cr-128 */
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add r11, r8, r8, asl #1 @ Cr*51 + Cb*24
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add r11, r11, r11, asl #4
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add r11, r11, r7, asl #3
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add r11, r11, r7, asl #4
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add r2, r1, r1, asl #1 /* r2 = Cr*51 + Cb*24 */
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add r2, r2, r2, asl #4
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add r2, r2, r0, asl #3
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add r2, r2, r0, asl #4
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add r12, r7, #2 @ r12 = bu = (Cb*128 + 256) >> 9
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mov r12, r12, asr #2
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add r10, r10, #256 @ r10 = rv = (Cr*101 + 256) >> 9
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mov r10, r10, asr #9
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rsb r11, r11, #128 @ r11 = guv = (-r11 + 128) >> 8
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mov r11, r11, asr #8
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add r4, r1, r1, asl #2 /* r1 = Cr*101 */
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add r4, r4, r1, asl #5
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add r1, r4, r1, asl #6
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@ pixel_1
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ldrb r7, [r0], #1 @ *ysrc++
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sub r7, r7, #16 @ Y = (Y' - 16) * 37
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add r8, r7, r7, asl #2
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add r7, r8, r7, asl #5
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add r1, r1, #256 /* r1 = rv = (r1 + 256) >> 9 */
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mov r1, r1, asr #9
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rsb r2, r2, #128 /* r2 = guv = (-r2 + 128) >> 8 */
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mov r2, r2, asr #8
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add r0, r0, #2 /* r0 = bu = (Cb*128 + 256) >> 9 */
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mov r0, r0, asr #2
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stmia r8!, {r0-r2} /* store r0, r1 and r2 to chroma buffer */
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add r9, r10, r7, asr #8 @ R = (Y >> 8) + rv
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add r8, r11, r7, asr #7 @ G = (Y >> 7) + guv
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add r7, r12, r7, asr #8 @ B = (Y >> 8) + bu
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/* 1st loop, first pixel */
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ldrb r5, [r9], #1 /* r5 = *ysrc++ = *Y'_p++ */
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sub r5, r5, #16 /* r5 = (Y'-16) * 74 */
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add r3, r5, r5, asl #2
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add r5, r3, r5, asl #5
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cmp r9, #31 @ clamp R
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mvnhi r9, r9, asr #31
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andhi r9, r9, #31
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add r6, r1, r5, asr #8 /* r6 = r = (Y >> 9) + rv */
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add r3, r2, r5, asr #7 /* r3 = g = (Y >> 8) + guv */
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add r4, r0, r5, asr #8 /* r4 = b = (Y >> 9) + bu */
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cmp r8, #63 @ clamp G
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mvnhi r8, r8, asr #31
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andhi r8, r8, #63
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orr r5, r6, r4 /* check if clamping is needed... */
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orr r5, r5, r3, asr #1 /* ...at all */
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cmp r5, #31
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bls 15f /* -> no clamp */
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cmp r6, #31 /* clamp r */
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mvnhi r6, r6, asr #31
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andhi r6, r6, #31
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cmp r3, #63 /* clamp g */
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mvnhi r3, r3, asr #31
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andhi r3, r3, #63
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cmp r4, #31 /* clamp b */
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mvnhi r4, r4, asr #31
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andhi r4, r4, #31
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15: /* no clamp */
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cmp r7, #31 @ clamp B
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mvnhi r7, r7, asr #31
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andhi r7, r7, #31
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/* calculate pixel_1 and save to r4 for later pixel packing */
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orr r4, r4, r3, lsl #5 /* pixel_1 = r<<11 | g<<5 | b */
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orr r4, r4, r6, lsl #11 /* r4 = pixel_1 */
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orr r6, r7, r8, lsl #5 @ pack pixel
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orr r6, r6, r9, lsl #11
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/* 1st loop, second pixel */
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ldrb r5, [r9], #1 /* r5 = *ysrc++ = *Y'_p++ */
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sub r5, r5, #16 /* r5 = (Y'-16) * 74 */
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add r3, r5, r5, asl #2
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add r5, r3, r5, asl #5
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mov r7, r6, lsl #8 @ swap bytes
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and r7, r7, #0xff00
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add r6, r7, r6, lsr #8
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add r6, r1, r5, asr #8 /* r6 = r = (Y >> 9) + rv */
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add r3, r2, r5, asr #7 /* r3 = g = (Y >> 8) + guv */
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add r5, r0, r5, asr #8 /* r5 = b = (Y >> 9) + bu */
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@ pixel_2
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ldrb r7, [r0], #1 @ *ysrc++
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sub r7, r7, #16 @ Y = (Y' - 16) * 37
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add r8, r7, r7, asl #2
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add r7, r8, r7, asl #5
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orr r0, r6, r5 /* check if clamping is needed... */
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orr r0, r0, r3, asr #1 /* ...at all */
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cmp r0, #31
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bls 15f /* -> no clamp */
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cmp r6, #31 /* clamp r */
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mvnhi r6, r6, asr #31
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andhi r6, r6, #31
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cmp r3, #63 /* clamp g */
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mvnhi r3, r3, asr #31
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andhi r3, r3, #63
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cmp r5, #31 /* clamp b */
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mvnhi r5, r5, asr #31
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andhi r5, r5, #31
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15: /* no clamp */
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add r9, r10, r7, asr #8 @ R = (Y >> 8) + rv
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add r8, r11, r7, asr #7 @ G = (Y >> 7) + guv
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add r7, r12, r7, asr #8 @ B = (Y >> 8) + bu
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cmp r9, #31 @ clamp R
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mvnhi r9, r9, asr #31
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andhi r9, r9, #31
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cmp r8, #63 @ clamp G
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mvnhi r8, r8, asr #31
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andhi r8, r8, #63
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cmp r7, #31 @ clamp B
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mvnhi r7, r7, asr #31
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andhi r7, r7, #31
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orr r7, r7, r8, lsl #5 @ pack pixel
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orr r7, r7, r9, lsl #11
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orr r6, r6, r7, lsl #24 @ swap bytes and add pixels simultaneously
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mov r7, r7, lsr #8
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orr r6, r6, r7, lsl #16
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#if 1
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11: @ while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_TXOK));
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ldr r11, [r4, #0x20] @
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tst r11, #0x1000000 @
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beq 11b @
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/* calculate pixel_2 and pack with pixel_1 before writing */
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orr r5, r5, r3, lsl #5 /* pixel_2 = r<<11 | g<<5 | b */
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orr r5, r5, r6, lsl #11 /* r5 = pixel_2 */
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#ifdef FORCE_FIFO_WAIT
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/* wait for FIFO half full */
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.fifo_wait1:
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ldr r3, [lr, #-0xE0] /* while !(LCD2_BLOCK_CTRL & 0x1000000); */
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tst r3, #0x1000000
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beq .fifo_wait1
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#endif
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str r6, [r5] @ send two pixels
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subs r3, r3, #2 @ decrease width
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bgt 10b @ loop
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mov r3, r4, lsl #8 /* swap pixel_1 */
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and r3, r3, #0xff00
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add r4, r3, r4, lsr #8
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ldmpc regs=r4-r11 @ restore regs
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.ltorg @ dump constant pool
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.size lcd_yuv_write_inner_loop, .-lcd_yuv_write_inner_loop
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orr r4, r4, r5, lsl #24 /* swap pixel_2 and pack with pixel_1 */
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mov r5, r5, lsr #8
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orr r4, r4, r5, lsl #16
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str r4, [lr] /* write pixel_1 and pixel_2 */
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subs r7, r7, #2 /* check for loop end */
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bgt 10b /* back to beginning */
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/* 1st loop end */
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/* Reload several registers for pointer rewinding for next loop */
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add r8, sp, #16 /* chroma buffer */
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ldmia sp, { r1, r7, r9} /* r1 = LCD_BASE */
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/* r7 = loop count */
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/* r9 = &ysrc[stride] */
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/* 2nd loop start */
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20: /* loop start */
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/* restore r0 (bu), r1 (rv) and r2 (guv) from chroma buffer */
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ldmia r8!, {r0-r2}
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/* 2nd loop, first pixel */
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ldrb r5, [r9], #1 /* r5 = *ysrc++ = *Y'_p++ */
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sub r5, r5, #16 /* r5 = (Y'-16) * 74 */
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add r3, r5, r5, asl #2
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add r5, r3, r5, asl #5
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add r6, r1, r5, asr #8 /* r6 = r = (Y >> 9) + rv */
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add r3, r2, r5, asr #7 /* r3 = g = (Y >> 8) + guv */
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add r4, r0, r5, asr #8 /* r4 = b = (Y >> 9) + bu */
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orr r5, r6, r4 /* check if clamping is needed... */
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orr r5, r5, r3, asr #1 /* ...at all */
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cmp r5, #31
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bls 15f /* -> no clamp */
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cmp r6, #31 /* clamp r */
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mvnhi r6, r6, asr #31
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andhi r6, r6, #31
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cmp r3, #63 /* clamp g */
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mvnhi r3, r3, asr #31
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andhi r3, r3, #63
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cmp r4, #31 /* clamp b */
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mvnhi r4, r4, asr #31
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andhi r4, r4, #31
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15: /* no clamp */
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/* calculate pixel_1 and save to r4 for later pixel packing */
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orr r4, r4, r3, lsl #5 /* pixel_1 = r<<11 | g<<5 | b */
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orr r4, r4, r6, lsl #11 /* r4 = pixel_1 */
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/* 2nd loop, second pixel */
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ldrb r5, [r9], #1 /* r5 = *ysrc++ = *Y'_p++ */
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sub r5, r5, #16 /* r5 = (Y'-16) * 74 */
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add r3, r5, r5, asl #2
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add r5, r3, r5, asl #5
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add r6, r1, r5, asr #8 /* r6 = r = (Y >> 9) + rv */
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add r3, r2, r5, asr #7 /* r3 = g = (Y >> 8) + guv */
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add r5, r0, r5, asr #8 /* r5 = b = (Y >> 9) + bu */
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orr r0, r6, r5 /* check if clamping is needed... */
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orr r0, r0, r3, asr #1 /* ...at all */
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cmp r0, #31
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bls 15f /* -> no clamp */
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cmp r6, #31 /* clamp r */
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mvnhi r6, r6, asr #31
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andhi r6, r6, #31
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cmp r3, #63 /* clamp g */
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mvnhi r3, r3, asr #31
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andhi r3, r3, #63
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cmp r5, #31 /* clamp b */
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mvnhi r5, r5, asr #31
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andhi r5, r5, #31
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15: /* no clamp */
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/* calculate pixel_2 and pack with pixel_1 before writing */
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orr r5, r5, r3, lsl #5 /* pixel_2 = r<<11 | g<<5 | b */
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orr r5, r5, r6, lsl #11 /* r5 = pixel_2 */
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#ifdef FORCE_FIFO_WAIT
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/* wait for FIFO half full */
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.fifo_wait2:
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ldr r3, [lr, #-0xE0] /* while !(LCD2_BLOCK_CTRL & 0x1000000); */
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tst r3, #0x1000000
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beq .fifo_wait2
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#endif
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mov r3, r4, lsl #8 /* swap pixel_1 */
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and r3, r3, #0xff00
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add r4, r3, r4, lsr #8
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orr r4, r4, r5, lsl #24 /* swap pixel_2 and pack with pixel_1 */
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mov r5, r5, lsr #8
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orr r4, r4, r5, lsl #16
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str r4, [lr] /* write pixel_1 and pixel_2 */
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subs r7, r7, #2 /* check for loop end */
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bgt 20b /* back to beginning */
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/* 2nd loop end */
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ldr r3, [sp, #12]
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add sp, sp, r3 /* deallocate buffer */
|
||||
ldmpc regs=r4-r10 /* restore registers */
|
||||
|
||||
.ltorg
|
||||
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
|
||||
|
|
|
|||
|
|
@ -32,6 +32,9 @@
|
|||
#include "system.h"
|
||||
#include "hwcompat.h"
|
||||
|
||||
/*** macros ***/
|
||||
#define SWAP_INT(X,Y) {int tmp=X; X=Y; Y=tmp;}
|
||||
|
||||
/* LCD command codes for HD66789R */
|
||||
#define LCD_CNTL_RAM_ADDR_SET 0x21
|
||||
#define LCD_CNTL_WRITE_TO_GRAM 0x22
|
||||
|
|
@ -120,241 +123,164 @@ void lcd_init_device(void)
|
|||
#endif
|
||||
}
|
||||
|
||||
/*** update functions ***/
|
||||
extern void lcd_yuv_write_inner_loop(unsigned char const * const ysrc,
|
||||
unsigned char const * const usrc,
|
||||
unsigned char const * const vsrc,
|
||||
int width);
|
||||
/* Helper function to set up drawing region and start drawing */
|
||||
static void lcd_setup_drawing_region(int x, int y, int width, int height)
|
||||
{
|
||||
int y0, x0, y1, x1;
|
||||
|
||||
#define CSUB_X 2
|
||||
#define CSUB_Y 2
|
||||
/* calculate the drawing region */
|
||||
#if CONFIG_LCD == LCD_IPODNANO
|
||||
y0 = x; /* start horiz */
|
||||
x0 = y; /* start vert */
|
||||
y1 = (x + width) - 1; /* max horiz */
|
||||
x1 = (y + height) - 1; /* max vert */
|
||||
#elif CONFIG_LCD == LCD_IPODCOLOR
|
||||
y0 = y; /* start vert */
|
||||
x0 = (LCD_WIDTH - 1) - x; /* start horiz */
|
||||
y1 = (y + height) - 1; /* end vert */
|
||||
x1 = (x0 - width) + 1; /* end horiz */
|
||||
#endif
|
||||
|
||||
/* setup the drawing region */
|
||||
if (lcd_type == 0) {
|
||||
lcd_cmd_data(0x12, y0); /* start vert */
|
||||
lcd_cmd_data(0x13, x0); /* start horiz */
|
||||
lcd_cmd_data(0x15, y1); /* end vert */
|
||||
lcd_cmd_data(0x16, x1); /* end horiz */
|
||||
} else {
|
||||
if (y1 < y0) SWAP_INT(y0,y1) /* swap max horiz < start horiz */
|
||||
if (x1 < x0) SWAP_INT(x0,x1) /* swap max vert < start vert */
|
||||
|
||||
/* max horiz << 8 | start horiz */
|
||||
lcd_cmd_data(LCD_CNTL_HORIZ_RAM_ADDR_POS, (y1 << 8) | y0);
|
||||
/* max vert << 8 | start vert */
|
||||
lcd_cmd_data(LCD_CNTL_VERT_RAM_ADDR_POS, (x1 << 8) | x0);
|
||||
|
||||
/* start vert = max vert */
|
||||
#if CONFIG_LCD == LCD_IPODCOLOR
|
||||
x0 = x1;
|
||||
#endif
|
||||
|
||||
/* position cursor (set AD0-AD15) */
|
||||
/* start vert << 8 | start horiz */
|
||||
lcd_cmd_data(LCD_CNTL_RAM_ADDR_SET, ((x0 << 8) | y0));
|
||||
|
||||
/* start drawing */
|
||||
lcd_wait_write();
|
||||
LCD2_PORT = LCD2_CMD_MASK;
|
||||
LCD2_PORT = (LCD2_CMD_MASK|LCD_CNTL_WRITE_TO_GRAM);
|
||||
}
|
||||
}
|
||||
|
||||
/* Line write helper function for lcd_yuv_blit. Writes two lines of yuv420. */
|
||||
extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
|
||||
const unsigned int lcd_baseadress,
|
||||
int width,
|
||||
int stride);
|
||||
|
||||
/* 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)
|
||||
{
|
||||
int h;
|
||||
int y0, x0, y1, x1;
|
||||
int z;
|
||||
unsigned char const * yuv_src[3];
|
||||
|
||||
width = (width + 1) & ~1;
|
||||
width = (width + 1) & ~1; /* ensure width is even */
|
||||
height = (height + 1) & ~1; /* ensure height is even */
|
||||
|
||||
/* calculate the drawing region */
|
||||
#if CONFIG_LCD == LCD_IPODNANO
|
||||
y0 = x; /* start horiz */
|
||||
x0 = y; /* start vert */
|
||||
y1 = (x + width) - 1; /* max horiz */
|
||||
x1 = (y + height) - 1; /* max vert */
|
||||
#elif CONFIG_LCD == LCD_IPODCOLOR
|
||||
y0 = y; /* start vert */
|
||||
x0 = (LCD_WIDTH - 1) - x; /* start horiz */
|
||||
y1 = (y + height) - 1; /* end vert */
|
||||
x1 = (x0 - width) + 1; /* end horiz */
|
||||
#endif
|
||||
lcd_setup_drawing_region(x, y, width, height);
|
||||
|
||||
/* setup the drawing region */
|
||||
if (lcd_type == 0) {
|
||||
lcd_cmd_data(0x12, y0); /* start vert */
|
||||
lcd_cmd_data(0x13, x0); /* start horiz */
|
||||
lcd_cmd_data(0x15, y1); /* end vert */
|
||||
lcd_cmd_data(0x16, x1); /* end horiz */
|
||||
} else {
|
||||
/* swap max horiz < start horiz */
|
||||
if (y1 < y0) {
|
||||
int t;
|
||||
t = y0;
|
||||
y0 = y1;
|
||||
y1 = t;
|
||||
}
|
||||
|
||||
/* swap max vert < start vert */
|
||||
if (x1 < x0) {
|
||||
int t;
|
||||
t = x0;
|
||||
x0 = x1;
|
||||
x1 = t;
|
||||
}
|
||||
|
||||
/* max horiz << 8 | start horiz */
|
||||
lcd_cmd_data(LCD_CNTL_HORIZ_RAM_ADDR_POS, (y1 << 8) | y0);
|
||||
/* max vert << 8 | start vert */
|
||||
lcd_cmd_data(LCD_CNTL_VERT_RAM_ADDR_POS, (x1 << 8) | x0);
|
||||
|
||||
/* start vert = max vert */
|
||||
#if CONFIG_LCD == LCD_IPODCOLOR
|
||||
x0 = x1;
|
||||
#endif
|
||||
|
||||
/* position cursor (set AD0-AD15) */
|
||||
/* start vert << 8 | start horiz */
|
||||
lcd_cmd_data(LCD_CNTL_RAM_ADDR_SET, ((x0 << 8) | y0));
|
||||
|
||||
/* start drawing */
|
||||
lcd_wait_write();
|
||||
LCD2_PORT = LCD2_CMD_MASK;
|
||||
LCD2_PORT = (LCD2_CMD_MASK|LCD_CNTL_WRITE_TO_GRAM);
|
||||
}
|
||||
|
||||
const int stride_div_csub_x = stride/CSUB_X;
|
||||
|
||||
h=0;
|
||||
while (1)
|
||||
{
|
||||
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
|
||||
const unsigned char *ysrc = src[0] + stride * src_y + src_x;
|
||||
|
||||
const int uvoffset = stride_div_csub_x * (src_y/CSUB_Y) +
|
||||
(src_x/CSUB_X);
|
||||
|
||||
const unsigned char *usrc = src[1] + uvoffset;
|
||||
const unsigned char *vsrc = src[2] + uvoffset;
|
||||
|
||||
int pixels_to_write;
|
||||
|
||||
if (h==0)
|
||||
{
|
||||
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
|
||||
LCD2_BLOCK_CONFIG = 0;
|
||||
|
||||
if (height == 0) break;
|
||||
|
||||
pixels_to_write = (width * height) * 2;
|
||||
h = height;
|
||||
|
||||
/* calculate how much we can do in one go */
|
||||
if (pixels_to_write > 0x10000)
|
||||
{
|
||||
h = (0x10000/2) / width;
|
||||
pixels_to_write = (width * h) * 2;
|
||||
}
|
||||
|
||||
height -= h;
|
||||
LCD2_BLOCK_CTRL = 0x10000080;
|
||||
LCD2_BLOCK_CONFIG = 0xc0010000 | (pixels_to_write - 1);
|
||||
LCD2_BLOCK_CTRL = 0x34000000;
|
||||
}
|
||||
|
||||
lcd_yuv_write_inner_loop(ysrc,usrc,vsrc,width);
|
||||
|
||||
src_y++;
|
||||
h--;
|
||||
}
|
||||
|
||||
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
|
||||
LCD2_BLOCK_CONFIG = 0;
|
||||
}
|
||||
|
||||
|
||||
/* Update a fraction of the display. */
|
||||
void lcd_update_rect(int x, int y, int width, int height)
|
||||
{
|
||||
int y0, x0, y1, x1;
|
||||
int newx,newwidth;
|
||||
unsigned long *addr;
|
||||
|
||||
/* Ensure x and width are both even - so we can read 32-bit aligned
|
||||
data from lcd_framebuffer */
|
||||
newx=x&~1;
|
||||
newwidth=width&~1;
|
||||
if (newx+newwidth < x+width) { newwidth+=2; }
|
||||
x=newx; width=newwidth;
|
||||
|
||||
/* calculate the drawing region */
|
||||
#if CONFIG_LCD == LCD_IPODNANO
|
||||
y0 = x; /* start horiz */
|
||||
x0 = y; /* start vert */
|
||||
y1 = (x + width) - 1; /* max horiz */
|
||||
x1 = (y + height) - 1; /* max vert */
|
||||
#elif CONFIG_LCD == LCD_IPODCOLOR
|
||||
y0 = y; /* start vert */
|
||||
x0 = (LCD_WIDTH - 1) - x; /* start horiz */
|
||||
y1 = (y + height) - 1; /* end vert */
|
||||
x1 = (x0 - width) + 1; /* end horiz */
|
||||
#endif
|
||||
/* setup the drawing region */
|
||||
if (lcd_type == 0) {
|
||||
lcd_cmd_data(0x12, y0); /* start vert */
|
||||
lcd_cmd_data(0x13, x0); /* start horiz */
|
||||
lcd_cmd_data(0x15, y1); /* end vert */
|
||||
lcd_cmd_data(0x16, x1); /* end horiz */
|
||||
} else {
|
||||
/* swap max horiz < start horiz */
|
||||
if (y1 < y0) {
|
||||
int t;
|
||||
t = y0;
|
||||
y0 = y1;
|
||||
y1 = t;
|
||||
}
|
||||
|
||||
/* swap max vert < start vert */
|
||||
if (x1 < x0) {
|
||||
int t;
|
||||
t = x0;
|
||||
x0 = x1;
|
||||
x1 = t;
|
||||
}
|
||||
|
||||
/* max horiz << 8 | start horiz */
|
||||
lcd_cmd_data(LCD_CNTL_HORIZ_RAM_ADDR_POS, (y1 << 8) | y0);
|
||||
/* max vert << 8 | start vert */
|
||||
lcd_cmd_data(LCD_CNTL_VERT_RAM_ADDR_POS, (x1 << 8) | x0);
|
||||
|
||||
/* start vert = max vert */
|
||||
#if CONFIG_LCD == LCD_IPODCOLOR
|
||||
x0 = x1;
|
||||
#endif
|
||||
|
||||
/* position cursor (set AD0-AD15) */
|
||||
/* start vert << 8 | start horiz */
|
||||
lcd_cmd_data(LCD_CNTL_RAM_ADDR_SET, ((x0 << 8) | y0));
|
||||
|
||||
/* start drawing */
|
||||
lcd_wait_write();
|
||||
LCD2_PORT = LCD2_CMD_MASK;
|
||||
LCD2_PORT = (LCD2_CMD_MASK|LCD_CNTL_WRITE_TO_GRAM);
|
||||
}
|
||||
|
||||
addr = (unsigned long*)&lcd_framebuffer[y][x];
|
||||
z = stride * src_y;
|
||||
yuv_src[0] = src[0] + z + src_x;
|
||||
yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
|
||||
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
|
||||
|
||||
while (height > 0) {
|
||||
int c, r;
|
||||
int h, pixels_to_write;
|
||||
int r, h, pixels_to_write;
|
||||
|
||||
pixels_to_write = (width * height) * 2;
|
||||
h = height;
|
||||
|
||||
/* calculate how much we can do in one go */
|
||||
if (pixels_to_write > 0x10000) {
|
||||
h = (0x10000/2) / width;
|
||||
h = ((0x10000/2) / width) & ~1; /* ensure h is even */
|
||||
pixels_to_write = (width * h) * 2;
|
||||
}
|
||||
|
||||
LCD2_BLOCK_CTRL = 0x10000080;
|
||||
LCD2_BLOCK_CTRL = 0x10000080;
|
||||
LCD2_BLOCK_CONFIG = 0xc0010000 | (pixels_to_write - 1);
|
||||
LCD2_BLOCK_CTRL = 0x34000000;
|
||||
LCD2_BLOCK_CTRL = 0x34000000;
|
||||
|
||||
r = h>>1; /* lcd_write_yuv420_lines writes two lines at once */
|
||||
do {
|
||||
lcd_write_yuv420_lines(yuv_src, LCD2_BASE, width, stride);
|
||||
yuv_src[0] += stride << 1;
|
||||
yuv_src[1] += stride >> 1;
|
||||
yuv_src[2] += stride >> 1;
|
||||
} while (--r > 0);
|
||||
|
||||
/* transfer of pixels_to_write bytes finished */
|
||||
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
|
||||
LCD2_BLOCK_CONFIG = 0;
|
||||
|
||||
height -= h;
|
||||
}
|
||||
}
|
||||
|
||||
/* Helper function writes 'count' consecutive pixels from src to LCD IF */
|
||||
static void lcd_write_line(int count, unsigned long *src)
|
||||
{
|
||||
do {
|
||||
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_TXOK)); /* FIFO wait */
|
||||
LCD2_BLOCK_DATA = *src++; /* output 2 pixels */
|
||||
count -= 2;
|
||||
} while (count > 0);
|
||||
}
|
||||
|
||||
/* Update a fraction of the display. */
|
||||
void lcd_update_rect(int x, int y, int width, int height)
|
||||
{
|
||||
unsigned long *addr;
|
||||
|
||||
/* Ensure both x and width are even to be able to read 32-bit aligned
|
||||
* data from lcd_framebuffer */
|
||||
x = x & ~1; /* use the smaller even number */
|
||||
width = (width + 1) & ~1; /* use the bigger even number */
|
||||
|
||||
lcd_setup_drawing_region(x, y, width, height);
|
||||
|
||||
addr = (unsigned long*)&lcd_framebuffer[y][x];
|
||||
|
||||
while (height > 0) {
|
||||
int r, h, pixels_to_write;
|
||||
|
||||
pixels_to_write = (width * height) * 2;
|
||||
h = height;
|
||||
|
||||
/* calculate how much we can do in one go */
|
||||
if (pixels_to_write > 0x10000) {
|
||||
h = ((0x10000/2) / width) & ~1; /* ensure h is even */
|
||||
pixels_to_write = (width * h) * 2;
|
||||
}
|
||||
|
||||
LCD2_BLOCK_CTRL = 0x10000080;
|
||||
LCD2_BLOCK_CONFIG = 0xc0010000 | (pixels_to_write - 1);
|
||||
LCD2_BLOCK_CTRL = 0x34000000;
|
||||
|
||||
if (LCD_WIDTH == width) {
|
||||
/* for each row and column in a single loop */
|
||||
for (r = 0; r < h*width; r += 2) {
|
||||
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_TXOK));
|
||||
|
||||
/* output 2 pixels */
|
||||
LCD2_BLOCK_DATA = *addr++;
|
||||
}
|
||||
/* for each row and column in a single call */
|
||||
lcd_write_line(h*width, addr);
|
||||
addr += LCD_WIDTH/2*h;
|
||||
} else {
|
||||
/* for each row */
|
||||
for (r = 0; r < h; r++) {
|
||||
/* for each column */
|
||||
for (c = 0; c < width; c += 2) {
|
||||
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_TXOK));
|
||||
|
||||
/* output 2 pixels */
|
||||
LCD2_BLOCK_DATA = *addr++;
|
||||
}
|
||||
addr += (LCD_WIDTH - width)/2;
|
||||
lcd_write_line(width, addr);
|
||||
addr += LCD_WIDTH/2;
|
||||
}
|
||||
}
|
||||
|
||||
/* transfer of pixels_to_write bytes finished */
|
||||
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
|
||||
LCD2_BLOCK_CONFIG = 0;
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue