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Rework ppmviewer to fit our shiny new imageviewer framework. FS#11818 by me.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29012 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Marcin Bukat
parent
6d05e27d68
commit
6e3da841be
12 changed files with 574 additions and 358 deletions
233
apps/plugins/imageviewer/ppm/ppm.c
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233
apps/plugins/imageviewer/ppm/ppm.c
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2010 Marcin Bukat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "plugin.h"
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#include "lcd.h"
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#include <lib/pluginlib_bmp.h>
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#include "../imageviewer.h"
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#include "ppm_decoder.h"
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#include "bmp.h"
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static char print[32]; /* use a common snprintf() buffer */
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/* decompressed image in the possible sizes (1,2,4,8), wasting the other */
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static unsigned char *disp[9];
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static unsigned char *disp_buf;
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static struct ppm_info ppm;
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#if defined(HAVE_LCD_COLOR)
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#define resize_bitmap smooth_resize_bitmap
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#else
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#define resize_bitmap grey_resize_bitmap
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#endif
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#if defined(USEGSLIB) && (CONFIG_PLATFORM & PLATFORM_HOSTED)
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/* hack: fix error "undefined reference to `_grey_info'". */
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GREY_INFO_STRUCT
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#endif /* USEGSLIB */
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static void draw_image_rect(struct image_info *info,
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int x, int y, int width, int height)
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{
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unsigned char **pdisp = (unsigned char **)info->data;
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#ifdef HAVE_LCD_COLOR
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rb->lcd_bitmap_part((fb_data *)*pdisp, info->x + x, info->y + y,
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STRIDE(SCREEN_MAIN, info->width, info->height),
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x + MAX(0, (LCD_WIDTH-info->width)/2),
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y + MAX(0, (LCD_HEIGHT-info->height)/2),
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width, height);
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#else
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mylcd_ub_gray_bitmap_part(*pdisp,
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info->x + x, info->y + y, info->width,
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x + MAX(0, (LCD_WIDTH-info->width)/2),
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y + MAX(0, (LCD_HEIGHT-info->height)/2),
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width, height);
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#endif
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}
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static int img_mem(int ds)
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{
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#ifdef USEGSLIB
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return (ppm.x/ds) * (ppm.y/ds);
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#else
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return (ppm.x/ds) * (ppm.y/ds) * FB_DATA_SZ;
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#endif
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}
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static int load_image(char *filename, struct image_info *info,
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unsigned char *buf, ssize_t *buf_size)
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{
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int fd;
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int rc = PLUGIN_OK;
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long time = 0; /* measured ticks */
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int w, h; /* used to center output */
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unsigned char *memory, *memory_max;
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size_t memory_size, file_size;
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/* cleanup */
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memset(&disp, 0, sizeof(disp));
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/* align buffer */
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memory = (unsigned char *)((intptr_t)(buf + 3) & ~3);
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memory_max = (unsigned char *)((intptr_t)(memory + *buf_size) & ~3);
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memory_size = memory_max - memory;
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fd = rb->open(filename, O_RDONLY);
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if (fd < 0)
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{
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rb->splashf(HZ, "err opening %s: %d", filename, fd);
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return PLUGIN_ERROR;
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}
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file_size = rb->filesize(fd);
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DEBUGF("reading file '%s'\n", filename);
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if (!iv->running_slideshow)
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{
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rb->lcd_puts(0, 0, rb->strrchr(filename,'/')+1);
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rb->lcd_update();
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}
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if (!iv->running_slideshow)
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{
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rb->lcd_putsf(0, 1, "loading %zu bytes", file_size);
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rb->lcd_update();
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}
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/* init decoder struct */
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ppm.buf = memory;
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ppm.buf_size = memory_size;
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/* the actual decoding */
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time = *rb->current_tick;
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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rb->cpu_boost(true);
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rc = read_ppm(fd, &ppm);
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rb->cpu_boost(false);
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#else
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rc = read_ppm(fd, &ppm);
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#endif /*HAVE_ADJUSTABLE_CPU_FREQ*/
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time = *rb->current_tick - time;
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/* close file descriptor */
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rb->close(fd);
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/* check return value from decoder */
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if ( rc == PLUGIN_ERROR )
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{
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rb->splashf(HZ, "ppm decoder error");
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return PLUGIN_ERROR;
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}
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if (!iv->running_slideshow)
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{
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rb->snprintf(print, sizeof(print), " %ld.%02ld sec ", time/HZ, time%HZ);
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rb->lcd_getstringsize(print, &w, &h); /* centered in progress bar */
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rb->lcd_putsxy((LCD_WIDTH - w)/2, LCD_HEIGHT - h, print);
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rb->lcd_update();
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}
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info->x_size = ppm.x;
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info->y_size = ppm.y;
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ppm.native_img_size = (ppm.native_img_size + 3) & ~3;
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disp_buf = buf + ppm.native_img_size;
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*buf_size = memory_max - disp_buf;
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return PLUGIN_OK;
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}
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static int get_image(struct image_info *info, int ds)
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{
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unsigned char **p_disp = &disp[ds]; /* short cut */
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struct ppm_info *p_ppm = &ppm;
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info->width = ppm.x / ds;
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info->height = ppm.y / ds;
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info->data = p_disp;
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if (*p_disp != NULL)
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{
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/* we still have it */
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return PLUGIN_OK;
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}
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/* assign image buffer */
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if (ds > 1)
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{
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if (!iv->running_slideshow)
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{
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rb->lcd_putsf(0, 3, "resizing %d*%d", info->width, info->height);
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rb->lcd_update();
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}
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struct bitmap bmp_src, bmp_dst;
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int size = img_mem(ds);
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if (disp_buf + size >= p_ppm->buf + p_ppm->buf_size)
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{
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/* have to discard the current */
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int i;
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for (i=1; i<=8; i++)
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disp[i] = NULL; /* invalidate all bitmaps */
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/* start again from the beginning of the buffer */
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disp_buf = p_ppm->buf + p_ppm->native_img_size;
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}
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*p_disp = disp_buf;
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disp_buf += size;
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bmp_src.width = ppm.x;
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bmp_src.height = ppm.y;
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bmp_src.data = ppm.buf;
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bmp_dst.width = info->width;
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bmp_dst.height = info->height;
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bmp_dst.data = *p_disp;
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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rb->cpu_boost(true);
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resize_bitmap(&bmp_src, &bmp_dst);
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rb->cpu_boost(false);
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#else
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resize_bitmap(&bmp_src, &bmp_dst);
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#endif /*HAVE_ADJUSTABLE_CPU_FREQ*/
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}
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else
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{
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*p_disp = p_ppm->buf;
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}
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return PLUGIN_OK;
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}
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const struct image_decoder image_decoder = {
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true,
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img_mem,
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load_image,
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get_image,
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draw_image_rect,
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};
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IMGDEC_HEADER
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