FS#10535: bmp viewer plugin.

* changed bmp.c so that it loads bitmap larger than LCD correctly.
* removed bmp entry form inbuilt_filetypes in filetypes.c so that bmp files will be opened with bmp viewer when selected in browser.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24754 a1c6a512-1295-4272-9138-f99709370657

9 files changed, 356 insertions, 2 deletions

diff --git a/apps/plugins/CATEGORIES b/apps/plugins/CATEGORIES
index 218055e..4951f0d 100644
--- a/apps/plugins/CATEGORIES
+++ b/apps/plugins/CATEGORIES
@@ -3,6 +3,7 @@ autostart,apps
 battery_bench,apps
 bench_scaler,apps
 blackjack,games
+bmp,viewers
 boomshine,games
 bounce,demos
 brickmania,games
diff --git a/apps/plugins/imageviewer/SUBDIRS b/apps/plugins/imageviewer/SUBDIRS
index 6785e47..ca9665a 100644
--- a/apps/plugins/imageviewer/SUBDIRS
+++ b/apps/plugins/imageviewer/SUBDIRS
@@ -1,3 +1,4 @@
+bmp
 jpeg
 #ifdef HAVE_LCD_COLOR
 png
diff --git a/apps/plugins/imageviewer/bmp/SOURCES b/apps/plugins/imageviewer/bmp/SOURCES
new file mode 100644
index 0000000..a50d245
--- /dev/null
+++ b/apps/plugins/imageviewer/bmp/SOURCES
@@ -0,0 +1,2 @@
+bmp_ui.c
+bmp.c
diff --git a/apps/plugins/imageviewer/bmp/bmp.c b/apps/plugins/imageviewer/bmp/bmp.c
new file mode 100644
index 0000000..73a4d73
--- /dev/null
+++ b/apps/plugins/imageviewer/bmp/bmp.c
@@ -0,0 +1,323 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * BMP image viewer
+ *
+ * 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 "plugin.h"
+#include "bmp.h"
+#include "resize.h"
+#include <lib/feature_wrappers.h>
+#include <lib/pluginlib_bmp.h>
+
+#include "../imageviewer.h"
+
+#ifdef HAVE_LCD_COLOR
+#define resize_bitmap   smooth_resize_bitmap
+#elif defined(USEGSLIB)
+#define resize_bitmap   grey_resize_bitmap
+#else
+#define resize_bitmap   simple_resize_bitmap
+#endif
+
+/**************** begin Application ********************/
+
+
+/************************* Types ***************************/
+
+struct t_disp
+{
+    unsigned char* bitmap;
+};
+
+/************************* Globals ***************************/
+
+/* decompressed image in the possible sizes (1,2,4,8), wasting the other */
+static struct t_disp disp[9];
+
+/* my memory pool (from the mp3 buffer) */
+static char print[32]; /* use a common snprintf() buffer */
+
+/* the root of the images, hereafter are decompresed ones */
+static unsigned char* buf_root;
+static int root_size;
+
+/* up to here currently used by image(s) */
+static unsigned char* buf_images;
+static ssize_t buf_images_size;
+
+struct bitmap bmp;
+
+/************************* Implementation ***************************/
+
+#ifdef USEGSLIB
+/* copied & pasted from lib/pluginlib_bmp.c. */
+static void grey_resize_bitmap(struct bitmap *src, struct bitmap *dst)
+{
+    const int srcw = src->width;
+    const int srch = src->height;
+    const int dstw = dst->width;
+    const int dsth = dst->height;
+    unsigned char *srcd = src->data;
+    unsigned char *dstd = dst->data;
+
+    const long xrstep = ((srcw-1) << 8) / (dstw-1);
+    const long yrstep = ((srch-1) << 8) / (dsth-1);
+    unsigned char *src_row, *dst_row;
+    long xr, yr = 0;
+    int src_x, src_y, dst_x, dst_y;
+    for (dst_y=0; dst_y < dsth; dst_y++)
+    {
+        src_y = (yr >> 8);
+        src_row = &srcd[src_y * srcw];
+        dst_row = &dstd[dst_y * dstw];
+        for (xr=0,dst_x=0; dst_x < dstw; dst_x++)
+        {
+            src_x = (xr >> 8);
+            dst_row[dst_x] = src_row[src_x];
+            xr += xrstep;
+        }
+        yr += yrstep;
+    }
+}
+#endif /* USEGSLIB */
+
+bool img_ext(const char *ext)
+{
+    if (!ext)
+        return false;
+    if (!rb->strcasecmp(ext,".bmp"))
+            return true;
+    else
+            return false;
+}
+
+void draw_image_rect(struct image_info *info,
+                     int x, int y, int width, int height)
+{
+    struct t_disp* pdisp = (struct t_disp*)info->data;
+#ifdef HAVE_LCD_COLOR
+    rb->lcd_bitmap_part(
+        (fb_data*)pdisp->bitmap, info->x + x, info->y + y,
+        STRIDE(SCREEN_MAIN, info->width, info->height),
+        x + MAX(0, (LCD_WIDTH-info->width)/2),
+        y + MAX(0, (LCD_HEIGHT-info->height)/2),
+        width, height);
+#else
+    MYXLCD(gray_bitmap_part)(
+        pdisp->bitmap, info->x + x, info->y + y, info->width,
+        x + MAX(0, (LCD_WIDTH-info->width)/2),
+        y + MAX(0, (LCD_HEIGHT-info->height)/2),
+        width, height);
+#endif
+}
+
+int img_mem(int ds)
+{
+#ifndef USEGSLIB
+    return (bmp.width/ds) * (bmp.height/ds) * sizeof (fb_data);
+#else
+    return (bmp.width/ds) * (bmp.height/ds);
+#endif
+}
+
+int load_image(char *filename, struct image_info *info,
+               unsigned char *buf, ssize_t *buf_size)
+{
+    int w, h; /* used to center output */
+    long time; /* measured ticks */
+    int fd;
+    int size;
+    int format = FORMAT_NATIVE;
+#ifdef USEGSLIB
+    const struct custom_format *cformat = &format_grey;
+#else
+    const struct custom_format *cformat = &format_native;
+#endif
+
+    rb->memset(&disp, 0, sizeof(disp));
+    rb->memset(&bmp, 0, sizeof(bmp)); /* clear info struct */
+
+    if ((intptr_t)buf & 3)
+    {
+        *buf_size -= 4-((intptr_t)buf&3);
+        buf += 4-((intptr_t)buf&3);
+    }
+    fd = rb->open(filename, O_RDONLY);
+    if (fd < 0)
+    {
+        rb->splashf(HZ, "err opening %s: %d", filename, fd);
+        return PLUGIN_ERROR;
+    }
+    int ds = 1;
+    /* check size of image needed to load image. */
+    size = scaled_read_bmp_fd(fd, &bmp, 0, format | FORMAT_RETURN_SIZE, cformat);
+#ifdef USE_PLUG_BUF
+    if (!plug_buf)
+#endif
+    {
+        while (size > *buf_size && bmp.width >= 2 && bmp.height >= 2 && ds < 8)
+        {
+            /* too large for the buffer. resize on load. */
+            format |= FORMAT_RESIZE|FORMAT_KEEP_ASPECT;
+            ds *= 2;
+            bmp.width /= 2;
+            bmp.height /= 2;
+            rb->lseek(fd, 0, SEEK_SET);
+            size = scaled_read_bmp_fd(fd, &bmp, 0, format | FORMAT_RETURN_SIZE, cformat);
+        }
+    }
+    if (size <= 0)
+    {
+        rb->close(fd);
+        rb->splashf(HZ, "read error %d", size);
+        return PLUGIN_ERROR;
+    }
+
+    if (size > *buf_size)
+    {
+        rb->close(fd);
+        return PLUGIN_OUTOFMEM;
+    }
+
+    if (!running_slideshow)
+    {
+        rb->lcd_puts(0, 0, rb->strrchr(filename,'/')+1);
+        rb->lcd_update();
+
+        rb->snprintf(print, sizeof(print), "loading %dx%d%s",
+                        bmp.width, bmp.height, ds == 1?"":"(resize on load)");
+        rb->lcd_puts(0, 1, print);
+        rb->lcd_update();
+    }
+
+    /* allocate bitmap buffer */
+    bmp.data = buf;
+
+    /* actual loading */
+    time = *rb->current_tick;
+    rb->lseek(fd, 0, SEEK_SET);
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost(true);
+    size = scaled_read_bmp_fd(fd, &bmp, *buf_size, format, cformat);
+    rb->cpu_boost(false);
+#else
+    size = scaled_read_bmp_fd(fd, &bmp, *buf_size, format, cformat);
+#endif /*HAVE_ADJUSTABLE_CPU_FREQ*/
+    rb->close(fd);
+    time = *rb->current_tick - time;
+
+    if (size <= 0)
+    {
+        rb->splashf(HZ, "load error %d", size);
+        return PLUGIN_ERROR;
+    }
+
+    if (!running_slideshow)
+    {
+        rb->snprintf(print, sizeof(print), " %ld.%02ld sec ", time/HZ, time%HZ);
+        rb->lcd_getstringsize(print, &w, &h); /* centered in progress bar */
+        rb->lcd_putsxy((LCD_WIDTH - w)/2, LCD_HEIGHT - h, print);
+        rb->lcd_update();
+    }
+#ifdef DISK_SPINDOWN
+    else if (immediate_ata_off)
+    {
+        /* running slideshow and time is long enough: power down disk */
+        rb->storage_sleep();
+    }
+#endif
+
+    /* we can start the resized images behind it */
+    buf_images = buf_root = buf + size;
+    buf_images_size = root_size = *buf_size - size;
+
+    if (!running_slideshow)
+    {
+        rb->snprintf(print, sizeof(print), "image %dx%d", bmp.width, bmp.height);
+        rb->lcd_puts(0, 2, print);
+        rb->lcd_update();
+    }
+
+    info->x_size = bmp.width;
+    info->y_size = bmp.height;
+    *buf_size = buf_images_size;
+    return PLUGIN_OK;
+}
+
+int get_image(struct image_info *info, int ds)
+{
+    struct t_disp* p_disp = &disp[ds]; /* short cut */
+
+    info->width = bmp.width/ds;
+    info->height = bmp.height/ds;
+    info->data = p_disp;
+
+    if (p_disp->bitmap != NULL)
+    {
+        /* we still have it */
+        return PLUGIN_OK;
+    }
+
+    /* assign image buffer */
+    if (ds > 1)
+    {
+        int size; /* resized image size */
+        struct bitmap bmp_dst;
+
+        size = img_mem(ds);
+        if (buf_images_size <= size)
+        {
+            /* have to discard the current */
+            int i;
+            for (i=1; i<=8; i++)
+                disp[i].bitmap = NULL; /* invalidate all bitmaps */
+            buf_images = buf_root; /* start again from the beginning of the buffer */
+            buf_images_size = root_size;
+        }
+
+        p_disp->bitmap = buf_images;
+        buf_images += size;
+        buf_images_size -= size;
+
+        if (!running_slideshow)
+        {
+            rb->snprintf(print, sizeof(print), "resizing %d*%d",
+                            info->width, info->height);
+            rb->lcd_puts(0, 3, print);
+            rb->lcd_update();
+        }
+
+        bmp_dst.width = info->width;
+        bmp_dst.height = info->height;
+        bmp_dst.data = p_disp->bitmap;
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+        rb->cpu_boost(true);
+        resize_bitmap(&bmp, &bmp_dst);
+        rb->cpu_boost(false);
+#else
+        resize_bitmap(&bmp, &bmp_dst);
+#endif /*HAVE_ADJUSTABLE_CPU_FREQ*/
+    }
+    else
+    {
+        p_disp->bitmap = bmp.data;
+    }
+
+    return PLUGIN_OK;
+}
diff --git a/apps/plugins/imageviewer/bmp/bmp.make b/apps/plugins/imageviewer/bmp/bmp.make
new file mode 100644
index 0000000..0582ba3
--- /dev/null
+++ b/apps/plugins/imageviewer/bmp/bmp.make
@@ -0,0 +1,21 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+
+BMPSRCDIR := $(IMGVSRCDIR)/bmp
+BMPBUILDDIR := $(IMGVBUILDDIR)/bmp
+
+ROCKS += $(BMPBUILDDIR)/bmp.rock
+
+BMP_SRC := $(call preprocess, $(BMPSRCDIR)/SOURCES)
+BMP_OBJ := $(call c2obj, $(BMP_SRC))
+
+# add source files to OTHER_SRC to get automatic dependencies
+OTHER_SRC += $(BMP_SRC)
+
+$(BMPBUILDDIR)/bmp.rock: $(BMP_OBJ)
diff --git a/apps/plugins/imageviewer/bmp/bmp_ui.c b/apps/plugins/imageviewer/bmp/bmp_ui.c
new file mode 100644
index 0000000..8ff3e0c
--- /dev/null
+++ b/apps/plugins/imageviewer/bmp/bmp_ui.c
@@ -0,0 +1,5 @@
+#define BMP_VIEWER
+#define MENU_TITLE "BMP Menu"
+#define UNSCALED_IS_AVAILABLE 1
+
+#include "../imageviewer.c"
diff --git a/apps/plugins/imageviewer/jpeg/jpeg.c b/apps/plugins/imageviewer/jpeg/jpeg.c
index 91e0c10..b16ec1c 100644
--- a/apps/plugins/imageviewer/jpeg/jpeg.c
+++ b/apps/plugins/imageviewer/jpeg/jpeg.c
@@ -136,7 +136,7 @@ int load_image(char *filename, struct image_info *info,
     fd = rb->open(filename, O_RDONLY);
     if (fd < 0)
     {
-        rb->splashf(HZ, "err opening %s:%d", filename, fd);
+        rb->splashf(HZ, "err opening %s: %d", filename, fd);
         return PLUGIN_ERROR;
     }
     filesize = rb->filesize(fd);
diff --git a/apps/plugins/imageviewer/png/png.c b/apps/plugins/imageviewer/png/png.c
index 958793b..4a7e096 100644
--- a/apps/plugins/imageviewer/png/png.c
+++ b/apps/plugins/imageviewer/png/png.c
@@ -1338,7 +1338,7 @@ int load_image(char *filename, struct image_info *info,
     fd = rb->open(filename, O_RDONLY);
     if (fd < 0)
     {
-        rb->splashf(HZ, "err opening %s:%d", filename, fd);
+        rb->splashf(HZ, "err opening %s: %d", filename, fd);
         return PLUGIN_ERROR;
     }
     image_size = rb->filesize(fd);
diff --git a/apps/plugins/viewers.config b/apps/plugins/viewers.config
index 9851156..1c70c29 100644
--- a/apps/plugins/viewers.config
+++ b/apps/plugins/viewers.config
@@ -2,6 +2,7 @@ ch8,viewers/chip8,0
 txt,viewers/viewer,1
 nfo,viewers/viewer,1
 txt,apps/text_editor,2
+bmp,viewers/bmp,2
 jpg,viewers/jpeg,2
 jpe,viewers/jpeg,2
 jpeg,viewers/jpeg,2