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resize-on-load for bitmap files on 2bpp and color targets

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19374 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andrew Mahone 2008-12-09 23:07:59 +00:00
parent a2c71fde1b
commit 781421afa2
14 changed files with 1460 additions and 404 deletions
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1
apps/SOURCES
View file

@ -85,6 +85,7 @@ gui/viewport.c
#if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1))
gui/backdrop.c
recorder/resize.c
#endif
#ifdef HAVE_LCD_CHARCELLS

12
apps/buffering.c
View file

@ -52,6 +52,9 @@
#include "bmp.h"
#include "appevents.h"
#include "metadata.h"
#ifdef HAVE_ALBUMART
#include "albumart.h"
#endif
#if MEM > 1
#define GUARD_BUFSIZE (32*1024)
@ -852,8 +855,13 @@ static int load_bitmap(int fd)
bmp->maskdata = NULL;
#endif
int free = (int)MIN(buffer_len - BUF_USED, buffer_len - buf_widx);
rc = read_bmp_fd(fd, bmp, free, FORMAT_ANY|FORMAT_DITHER);
int free = (int)MIN(buffer_len - BUF_USED, buffer_len - buf_widx)
- sizeof(struct bitmap);
get_albumart_size(bmp);
rc = read_bmp_fd(fd, bmp, free, FORMAT_NATIVE|FORMAT_DITHER|
FORMAT_RESIZE|FORMAT_KEEP_ASPECT);
return rc + (rc > 0 ? sizeof(struct bitmap) : 0);
}
#endif

3
apps/gui/gwps.c
View file

@ -813,6 +813,9 @@ void gui_sync_wps_init(void)
FOR_NB_SCREENS(i)
{
wps_data_init(&wps_datas[i]);
#ifdef HAVE_ALBUMART
wps_datas[i].wps_uses_albumart = 0;
#endif
#ifdef HAVE_REMOTE_LCD
wps_datas[i].remote_wps = (i != 0);
#endif

18
apps/gui/gwps.h
View file

@ -47,13 +47,11 @@
#define WPS_ALBUMART_CHECK 1 /* WPS contains AA conditional tag */
#define WPS_ALBUMART_LOAD 2 /* WPS contains AA tag */
#define WPS_ALBUMART_ALIGN_RIGHT WPS_ALIGN_RIGHT /* x align: right */
#define WPS_ALBUMART_ALIGN_CENTER WPS_ALIGN_CENTER /* x/y align: center */
#define WPS_ALBUMART_ALIGN_LEFT WPS_ALIGN_LEFT /* x align: left */
#define WPS_ALBUMART_ALIGN_TOP WPS_ALIGN_RIGHT /* y align: top */
#define WPS_ALBUMART_ALIGN_BOTTOM WPS_ALIGN_LEFT /* y align: bottom */
#define WPS_ALBUMART_INCREASE 8 /* increase if smaller */
#define WPS_ALBUMART_DECREASE 16 /* decrease if larger */
#define WPS_ALBUMART_ALIGN_RIGHT 1 /* x align: right */
#define WPS_ALBUMART_ALIGN_CENTER 2 /* x/y align: center */
#define WPS_ALBUMART_ALIGN_LEFT 4 /* x align: left */
#define WPS_ALBUMART_ALIGN_TOP 1 /* y align: top */
#define WPS_ALBUMART_ALIGN_BOTTOM 4 /* y align: bottom */
#endif /* HAVE_ALBUMART */
@ -382,10 +380,8 @@ struct wps_data
unsigned char wps_uses_albumart; /* WPS_ALBUMART_NONE, _CHECK, _LOAD */
short albumart_x;
short albumart_y;
unsigned short albumart_xalign; /* WPS_ALBUMART_ALIGN_LEFT, _CENTER, _RIGHT,
+ .._INCREASE, + .._DECREASE */
unsigned short albumart_yalign; /* WPS_ALBUMART_ALIGN_TOP, _CENTER, _BOTTOM,
+ .._INCREASE, + .._DECREASE */
unsigned char albumart_xalign; /* WPS_ALBUMART_ALIGN_LEFT, _CENTER, _RIGHT */
unsigned char albumart_yalign; /* WPS_ALBUMART_ALIGN_TOP, _CENTER, _BOTTOM */
short albumart_max_width;
short albumart_max_height;

74
apps/gui/wps_parser.c
View file

@ -969,23 +969,15 @@ static int parse_albumart_load(const char *wps_bufptr,
{
const char *_pos, *newline;
bool parsing;
const short xalign_mask = WPS_ALBUMART_ALIGN_LEFT |
WPS_ALBUMART_ALIGN_CENTER |
WPS_ALBUMART_ALIGN_RIGHT;
const short yalign_mask = WPS_ALBUMART_ALIGN_TOP |
WPS_ALBUMART_ALIGN_CENTER |
WPS_ALBUMART_ALIGN_BOTTOM;
(void)token; /* silence warning */
/* reset albumart info in wps */
wps_data->wps_uses_albumart = WPS_ALBUMART_NONE;
wps_data->albumart_max_width = -1;
wps_data->albumart_max_height = -1;
wps_data->albumart_xalign = WPS_ALBUMART_ALIGN_CENTER; /* default */
wps_data->albumart_yalign = WPS_ALBUMART_ALIGN_CENTER; /* default */
/* format: %Cl|x|y|[[l|c|r][d|i|s]mwidth]|[[t|c|b][d|i|s]mheight]| */
/* format: %Cl|x|y|[[l|c|r]mwidth]|[[t|c|b]mheight]| */
newline = strchr(wps_bufptr, '\n');
@ -1020,35 +1012,24 @@ static int parse_albumart_load(const char *wps_bufptr,
case 'l':
case 'L':
case '+':
wps_data->albumart_xalign =
(wps_data->albumart_xalign & xalign_mask) |
WPS_ALBUMART_ALIGN_LEFT;
wps_data->albumart_xalign = WPS_ALBUMART_ALIGN_LEFT;
break;
case 'c':
case 'C':
wps_data->albumart_xalign =
(wps_data->albumart_xalign & xalign_mask) |
WPS_ALBUMART_ALIGN_CENTER;
wps_data->albumart_xalign = WPS_ALBUMART_ALIGN_CENTER;
break;
case 'r':
case 'R':
case '-':
wps_data->albumart_xalign =
(wps_data->albumart_xalign & xalign_mask) |
WPS_ALBUMART_ALIGN_RIGHT;
wps_data->albumart_xalign = WPS_ALBUMART_ALIGN_RIGHT;
break;
case 'd':
case 'D':
wps_data->albumart_xalign |= WPS_ALBUMART_DECREASE;
break;
case 'i':
case 'I':
wps_data->albumart_xalign |= WPS_ALBUMART_INCREASE;
break;
case 's':
case 'S':
wps_data->albumart_xalign |=
(WPS_ALBUMART_DECREASE | WPS_ALBUMART_INCREASE);
/* simply ignored */
break;
default:
parsing = false;
@ -1080,35 +1061,24 @@ static int parse_albumart_load(const char *wps_bufptr,
case 't':
case 'T':
case '-':
wps_data->albumart_yalign =
(wps_data->albumart_yalign & yalign_mask) |
WPS_ALBUMART_ALIGN_TOP;
wps_data->albumart_yalign = WPS_ALBUMART_ALIGN_TOP;
break;
case 'c':
case 'C':
wps_data->albumart_yalign =
(wps_data->albumart_yalign & yalign_mask) |
WPS_ALBUMART_ALIGN_CENTER;
wps_data->albumart_yalign = WPS_ALBUMART_ALIGN_CENTER;
break;
case 'b':
case 'B':
case '+':
wps_data->albumart_yalign =
(wps_data->albumart_yalign & yalign_mask) |
WPS_ALBUMART_ALIGN_BOTTOM;
wps_data->albumart_yalign = WPS_ALBUMART_ALIGN_BOTTOM;
break;
case 'd':
case 'D':
wps_data->albumart_yalign |= WPS_ALBUMART_DECREASE;
break;
case 'i':
case 'I':
wps_data->albumart_yalign |= WPS_ALBUMART_INCREASE;
break;
case 's':
case 'S':
wps_data->albumart_yalign |=
(WPS_ALBUMART_DECREASE | WPS_ALBUMART_INCREASE);
/* simply ignored */
break;
default:
parsing = false;
@ -1524,9 +1494,6 @@ static void wps_reset(struct wps_data *data)
bool rwps = data->remote_wps; /* remember whether the data is for a RWPS */
#endif
memset(data, 0, sizeof(*data));
#ifdef HAVE_ALBUMART
data->wps_uses_albumart = WPS_ALBUMART_NONE;
#endif
wps_data_init(data);
#ifdef HAVE_REMOTE_LCD
data->remote_wps = rwps;
@ -1617,6 +1584,14 @@ bool wps_data_load(struct wps_data *wps_data,
const char *buf,
bool isfile)
{
#ifdef HAVE_ALBUMART
struct mp3entry *curtrack;
long offset;
int status;
int wps_uses_albumart = wps_data->wps_uses_albumart;
int albumart_max_height = wps_data->albumart_max_height;
int albumart_max_width = wps_data->albumart_max_width;
#endif
if (!wps_data || !buf)
return false;
@ -1731,6 +1706,21 @@ bool wps_data_load(struct wps_data *wps_data,
wps_reset(wps_data);
return false;
}
#endif
#ifdef HAVE_ALBUMART
status = audio_status();
if (((!wps_uses_albumart && wps_data->wps_uses_albumart) ||
(wps_data->wps_uses_albumart &&
(albumart_max_height != wps_data->albumart_max_height ||
albumart_max_width != wps_data->albumart_max_width))) &&
status & AUDIO_STATUS_PLAY)
{
curtrack = audio_current_track();
offset = curtrack->offset;
audio_stop();
if (!(status & AUDIO_STATUS_PAUSE))
audio_play(offset);
}
#endif
return true;
}

41
apps/plugins/sliding_puzzle.c
View file

@ -249,11 +249,12 @@ static int num_font = FONT_UI;
static int moves_font = FONT_UI;
static int moves_y = 0;
#ifdef HAVE_LCD_COLOR
static unsigned char *img_buf;
static size_t buf_len;
#else
static unsigned char img_buf[IMAGE_WIDTH*IMAGE_HEIGHT*sizeof(fb_data)]
__attribute__ ((aligned(16)));
#if LCD_DEPTH>1
static unsigned char temp_img_buf[LCD_WIDTH*LCD_HEIGHT*sizeof(fb_data)]
__attribute__ ((aligned(16)));
#endif
#ifdef HAVE_ALBUMART
static char albumart_path[MAX_PATH+1];
@ -330,37 +331,22 @@ static bool load_resize_bitmap(void)
rb->memset(&main_bitmap,0,sizeof(struct bitmap));
main_bitmap.data = img_buf;
#if LCD_DEPTH>1
struct bitmap temp_bitmap;
rb->memset(&temp_bitmap,0,sizeof(struct bitmap));
temp_bitmap.data = temp_img_buf;
main_bitmap.width = IMAGE_WIDTH;
main_bitmap.height = IMAGE_HEIGHT;
rc = rb->read_bmp_file( filename, &temp_bitmap, sizeof(temp_img_buf),
FORMAT_NATIVE );
if( rc > 0 )
{
#ifdef HAVE_LCD_COLOR
smooth_resize_bitmap( &temp_bitmap, &main_bitmap );
#else
simple_resize_bitmap( &temp_bitmap, &main_bitmap );
#ifndef HAVE_LCD_COLOR
size_t buf_len = sizeof(img_buf);
#endif
puzzle_bmp_ptr = (const fb_data *)img_buf;
rb->strcpy( img_buf_path, filename );
return true;
}
#else
rc = rb->read_bmp_file( filename, &main_bitmap, sizeof(img_buf),
FORMAT_NATIVE );
rc = rb->read_bmp_file( filename, &main_bitmap,
buf_len,
FORMAT_NATIVE|FORMAT_RESIZE );
if( rc > 0 )
{
puzzle_bmp_ptr = (const fb_data *)img_buf;
rb->strcpy( img_buf_path, filename );
return true;
}
#endif
}
/* something must have failed. get_albumart_bmp_path could return
@ -632,6 +618,13 @@ enum plugin_status plugin_start(const struct plugin_api* api, const void* parame
initial_bmp_path=(const char *)parameter;
picmode = PICMODE_INITIAL_PICTURE;
img_buf_path[0] = '\0';
#ifdef HAVE_LCD_COLOR
unsigned char *img_buf_end;
img_buf = (unsigned char *)(rb->plugin_get_buffer(&buf_len));
img_buf_end = img_buf + buf_len;
rb->align_buffer(PUN_PTR(void **,&img_buf), buf_len, 16);
buf_len = img_buf_end - img_buf;
#endif
/* If launched as a viewer, just go straight to the game without
bothering with the splash or instructions page */

9
apps/recorder/albumart.c
View file

@ -297,3 +297,12 @@ void draw_album_art(struct gui_wps *gwps, int handle_id, bool clear)
gwps->display->set_drawmode(DRMODE_SOLID);
}
}
void get_albumart_size(struct bitmap *bmp)
{
/* FIXME: What should we do with albumart on remote? */
struct wps_data *data = gui_wps[0].data;
bmp->width = data->albumart_max_width;
bmp->height = data->albumart_max_height;
}

2
apps/recorder/albumart.h
View file

@ -40,6 +40,8 @@ void draw_album_art(struct gui_wps *gwps, int handle_id, bool clear);
bool search_albumart_files(const struct mp3entry *id3, const char *size_string,
char *buf, int buflen);
void get_albumart_size(struct bitmap *bmp);
#endif /* HAVE_ALBUMART */
#endif /* _ALBUMART_H_ */

758
apps/recorder/bmp.c
View file

@ -29,6 +29,13 @@
- better protection against malformed / non-standard BMPs
- code heavily optimised for both size and speed
- dithering for 2 bit targets
2008-11-02 Akio Idehara: refactor for scaler frontend
2008-12-08 Andrew Mahone: partial-line reading, scaler frontend
- read_part_line does the actual source BMP reading, return columns read
and updates fields in a struct bmp_args with the new data and current
reader state
- skip_lines_bmp and store_part_bmp implement the scaler callbacks to skip
ahead by whole lines, or read the next chunk of the current line
*/
#include <stdio.h>
@ -41,10 +48,16 @@
#ifdef HAVE_REMOTE_LCD
#include "lcd-remote.h"
#endif
#ifdef ROCKBOX_DEBUG_BMP_LOADER
#define BDEBUGF DEBUGF
#else
#define BDEBUGF(...)
#endif
#ifndef __PCTOOL__
#include "config.h"
#include "system.h"
#include "bmp.h"
#include "resize.h"
#include "debug.h"
#else
#undef DEBUGF
@ -88,16 +101,31 @@ union rgb_union {
uint32_t raw;
};
/* masks for supported BI_BITFIELDS encodings (16/32 bit), little endian */
static const unsigned char bitfields[3][12] = {
{ 0x00,0x7c,0x00,0, 0xe0,0x03,0x00,0, 0x1f,0x00,0x00,0 }, /* 15 bit */
{ 0x00,0xf8,0x00,0, 0xe0,0x07,0x00,0, 0x1f,0x00,0x00,0 }, /* 16 bit */
{ 0x00,0x00,0xff,0, 0x00,0xff,0x00,0, 0xff,0x00,0x00,0 }, /* 32 bit */
/* masks for supported BI_BITFIELDS encodings (16/32 bit) */
static const struct uint8_rgb bitfields[3][3] = {
/* 15bit */
{
{ .blue = 0x00, .green = 0x7c, .red = 0x00 },
{ .blue = 0xe0, .green = 0x03, .red = 0x00 },
{ .blue = 0x1f, .green = 0x00, .red = 0x00 },
},
/* 16bit */
{
{ .blue = 0x00, .green = 0xf8, .red = 0x00 },
{ .blue = 0xe0, .green = 0x07, .red = 0x00 },
{ .blue = 0x1f, .green = 0x00, .red = 0x00 },
},
/* 32bit */
{
{ .blue = 0x00, .green = 0x00, .red = 0xff },
{ .blue = 0x00, .green = 0xff, .red = 0x00 },
{ .blue = 0xff, .green = 0x00, .red = 0x00 },
},
};
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
/* canonical ordered dither matrix */
static const unsigned char dither_matrix[16][16] = {
const unsigned char dither_matrix[16][16] = {
{ 0,192, 48,240, 12,204, 60,252, 3,195, 51,243, 15,207, 63,255 },
{ 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 },
{ 32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 },
@ -120,31 +148,11 @@ static const unsigned char dither_matrix[16][16] = {
#if ((LCD_DEPTH == 2) && (LCD_PIXELFORMAT == VERTICAL_INTERLEAVED)) \
|| (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH == 2) \
&& (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED))
static const unsigned short vi_pattern[4] = {
const unsigned short vi_pattern[4] = {
0x0101, 0x0100, 0x0001, 0x0000
};
#endif
/* little endian functions */
static inline unsigned readshort(uint16_t *value)
{
unsigned char* bytes = (unsigned char*) value;
return (unsigned)bytes[0] | ((unsigned)bytes[1] << 8);
}
static inline uint32_t readlong(uint32_t *value)
{
unsigned char* bytes = (unsigned char*) value;
return (uint32_t)bytes[0] | ((uint32_t)bytes[1] << 8) |
((uint32_t)bytes[2] << 16) | ((uint32_t)bytes[3] << 24);
}
static inline unsigned brightness(union rgb_union color)
{
return (3 * (unsigned)color.red + 6 * (unsigned)color.green
+ (unsigned)color.blue) / 10;
}
/******************************************************************************
* read_bmp_file()
*
@ -165,11 +173,219 @@ int read_bmp_file(const char* filename,
return fd * 10 - 1;
}
BDEBUGF("read_bmp_file: '%s' remote: %d resize: %d keep_aspect: %d\n",
filename, !!(format & FORMAT_REMOTE), !!(format & FORMAT_RESIZE),
!!(format & FORMAT_KEEP_ASPECT));
ret = read_bmp_fd(fd, bm, maxsize, format);
close(fd);
return ret;
}
static inline void set_rgb_union(struct uint8_rgb *dst, union rgb_union src)
{
dst->red = src.red;
dst->green = src.green;
dst->blue = src.blue;
}
struct bmp_args {
int fd;
short padded_width;
short read_width;
short width;
short depth;
unsigned char buf[MAX_WIDTH * 4];
struct uint8_rgb *palette;
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
int cur_row;
int cur_col;
struct img_part part;
#endif
};
static unsigned int read_part_line(struct bmp_args *ba)
{
const int padded_width = ba->padded_width;
const int read_width = ba->read_width;
const int width = ba->width;
const int depth = ba->depth;
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
int cur_row = ba->cur_row;
int cur_col = ba->cur_col;
#endif
const int fd = ba->fd;
uint8_t *ibuf;
struct uint8_rgb *buf = (struct uint8_rgb *)(ba->buf);
const struct uint8_rgb *palette = ba->palette;
uint32_t component, data = data;
int ret;
int i, cols, len;
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
cols = MIN(width - cur_col,(int)MAX_WIDTH);
len = (cols * (depth == 15 ? 16 : depth) + 7) >> 3;
#else
cols = width;
len = read_width;
#endif
ibuf = ((unsigned char *)buf) + (MAX_WIDTH << 2) - len;
BDEBUGF("read_part_line: cols=%d len=%d\n",cols,len);
ret = read(fd, ibuf, len);
if (ret != len)
{
DEBUGF("read_part_line: error reading image, read returned %d "
"expected %d\n", ret, len);
BDEBUGF("cur_row: %d cur_col: %d cols: %d len: %d\n", cur_row, cur_col,
cols, len);
return 0;
}
for (i = 0; i < cols; i++)
{
switch (depth)
{
case 1:
if ((i & 7) == 0)
data = *ibuf++;
*buf = palette[(data >> 7) & 1];
data <<= 1;
break;
case 4:
*buf = palette[*ibuf >> 4];
if (i & 1)
ibuf++;
else
*ibuf <<= 4;
break;
case 8:
*buf = palette[*ibuf++];
break;
case 15:
case 16:
data = letoh16(*(uint16_t*)ibuf);
component = (data << 3) & 0xf8;
component |= component >> 5;
buf->blue = component;
if (depth == 15)
{
data >>= 2;
component = data & 0xf8;
component |= component >> 5;
} else {
data >>= 3;
component = data & 0xfc;
component |= component >> 6;
}
buf->green = component;
data >>= 5;
component = data & 0xf8;
component |= component >> 5;
buf->red = component;
ibuf += 2;
break;
case 32:
case 24:
buf->blue = *ibuf++;
buf->green = *ibuf++;
buf->red = *ibuf++;
if (depth == 32)
ibuf++;
break;
}
buf++;
}
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
cur_col += cols;
if (cur_col == width)
{
#endif
int pad = padded_width - read_width;
if (pad > 0)
{
BDEBUGF("seeking %d bytes to next line\n",pad);
lseek(fd, pad, SEEK_CUR);
}
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
cur_col = 0;
BDEBUGF("read_part_line: completed row %d\n", cur_row);
cur_row += 1;
}
ba->cur_row = cur_row;
ba->cur_col = cur_col;
#endif
return cols;
}
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
static struct img_part *store_part_bmp(void *args)
{
struct bmp_args *ba = (struct bmp_args *)args;
ba->part.len = read_part_line(ba);
ba->part.buf = (struct uint8_rgb *)ba->buf;
if (ba->part.len)
return &(ba->part);
else
return NULL;
}
static bool skip_lines_bmp(void *args, unsigned int lines)
{
struct bmp_args * ba = (struct bmp_args *)args;
int pad = lines * ba->padded_width +
(ba->cur_col
? ((ba->cur_col * ba->depth + 7) >> 3) - ba->padded_width
: 0);
if (pad)
{
if(lseek(ba->fd, pad, SEEK_CUR) < 0)
return false;
}
ba->cur_row += lines + (ba->cur_col ? 1 : 0);
ba->cur_col = 0;
return true;
}
#endif
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
static inline int recalc_dimension(struct dim *dst, struct dim *src)
{
int tmp;
if (dst->width <= 0)
dst->width = LCD_WIDTH;
if (dst->height <= 0)
dst->height = LCD_HEIGHT;
#ifndef HAVE_UPSCALER
if (dst->width > src->width || dst->height > src->height)
{
dst->width = src->width;
dst->height = src->height;
}
if (src->width == dst->width && src->height == dst->height)
return 1;
#endif
tmp = (src->width * dst->height + (src->height >> 1)) / src->height;
if (tmp > dst->width)
dst->height = (src->height * dst->width + (src->width >> 1))
/ src->width;
else
dst->width = tmp;
return src->width == dst->width && src->height == dst->height;
}
#endif
static inline int rgbcmp(struct uint8_rgb rgb1, struct uint8_rgb rgb2)
{
if ((rgb1.red == rgb2.red) && (rgb1.green == rgb2.green) &&
(rgb1.blue == rgb2.blue))
return 0;
else
return 1;
}
/******************************************************************************
* read_bmp_fd()
*
@ -183,21 +399,22 @@ int read_bmp_fd(int fd,
int format)
{
struct bmp_header bmph;
int width, height, padded_width;
int dst_height, dst_width;
int padded_width;
int read_width;
int depth, numcolors, compression, totalsize;
int row, col, ret;
int rowstart, rowstop, rowstep;
int ret;
unsigned char *bitmap = bm->data;
uint32_t bmpbuf[LCD_WIDTH]; /* Buffer for one line */
uint32_t palette[256];
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
bool transparent = false;
bool dither = false;
#ifdef HAVE_REMOTE_LCD
struct uint8_rgb palette[256];
bool remote = false;
struct rowset rset;
struct dim src_dim;
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
unsigned int resize = IMG_NORESIZE;
bool dither = false;
bool transparent = false;
#ifdef HAVE_REMOTE_LCD
if (format & FORMAT_REMOTE) {
remote = true;
#if LCD_REMOTE_DEPTH == 1
@ -207,6 +424,12 @@ int read_bmp_fd(int fd,
#endif
}
#endif /* HAVE_REMOTE_LCD */
if (format & FORMAT_RESIZE) {
resize = IMG_RESIZE;
format &= ~FORMAT_RESIZE;
}
if (format & FORMAT_TRANSPARENT) {
transparent = true;
format &= ~FORMAT_TRANSPARENT;
@ -218,7 +441,7 @@ int read_bmp_fd(int fd,
#else
(void)format;
#endif /* (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1) */
#endif /*(LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)*/
/* read fileheader */
ret = read(fd, &bmph, sizeof(struct bmp_header));
@ -231,77 +454,77 @@ int read_bmp_fd(int fd,
return -3;
}
width = readlong(&bmph.width);
if (width > LCD_WIDTH) {
DEBUGF("read_bmp_fd: Bitmap too wide (%d pixels, max is %d)\n",
width, LCD_WIDTH);
return -4;
}
height = readlong(&bmph.height);
if (height < 0) { /* Top-down BMP file */
height = -height;
rowstart = 0;
rowstop = height;
rowstep = 1;
src_dim.width = letoh32(bmph.width);
src_dim.height = letoh32(bmph.height);
if (src_dim.height < 0) { /* Top-down BMP file */
src_dim.height = -src_dim.height;
rset.rowstep = 1;
} else { /* normal BMP */
rowstart = height - 1;
rowstop = -1;
rowstep = -1;
rset.rowstep = -1;
}
depth = readshort(&bmph.bit_count);
padded_width = ((width * depth + 31) >> 3) & ~3; /* 4-byte boundary aligned */
depth = letoh16(bmph.bit_count);
/* 4-byte boundary aligned */
read_width = ((src_dim.width * (depth == 15 ? 16 : depth) + 7) >> 3);
padded_width = (read_width + 3) & ~3;
BDEBUGF("width: %d height: %d depth: %d padded_width: %d\n", src_dim.width,
src_dim.height, depth, padded_width);
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
if (format == FORMAT_ANY) {
if ((format & 3) == FORMAT_ANY) {
if (depth == 1)
format = FORMAT_MONO;
format = (format & ~3);
else
format = FORMAT_NATIVE;
format = (format & ~3) | FORMAT_NATIVE;
}
bm->format = format;
#endif /* (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1) */
/* returning image size */
bm->width = width;
bm->height = height;
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
if (format == FORMAT_NATIVE) {
#if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
if (remote) {
#if (LCD_REMOTE_DEPTH == 2) && (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED)
dst_width = width;
dst_height = (height + 7) >> 3;
#endif /* LCD_REMOTE_DEPTH / LCD_REMOTE_PIXELFORMAT */
totalsize = dst_width * dst_height * sizeof(fb_remote_data);
} else
#endif /* defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1 */
{
#if LCD_DEPTH == 2
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
dst_width = (width + 3) >> 2;
dst_height = height;
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
dst_width = width;
dst_height = (height + 3) >> 2;
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
dst_width = width;
dst_height = (height + 7) >> 3;
#endif /* LCD_PIXELFORMAT */
#elif LCD_DEPTH == 16
dst_width = width;
dst_height = height;
#endif /* LCD_DEPTH */
totalsize = dst_width * dst_height * sizeof(fb_data);
}
} else
#endif /* (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1) */
bm->format = format & 3;
if ((format & 3) == FORMAT_MONO)
{
dst_width = width;
dst_height = (height + 7) >> 3;
totalsize = dst_width * dst_height;
resize &= ~IMG_RESIZE;
resize |= IMG_NORESIZE;
remote = 0;
}
#else
if (src_dim.width > MAX_WIDTH)
return -6;
#endif /*(LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)*/
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
if (resize & IMG_RESIZE) {
if(format & FORMAT_KEEP_ASPECT) {
/* keep aspect ratio.. */
format &= ~FORMAT_KEEP_ASPECT;
struct dim resize_dim = {
.width = bm->width,
.height = bm->height,
};
if (recalc_dimension(&resize_dim, &src_dim))
resize = IMG_NORESIZE;
bm->width = resize_dim.width;
bm->height = resize_dim.height;
}
}
if (!(resize & IMG_RESIZE)) {
#endif
/* returning image size */
bm->width = src_dim.width;
bm->height = src_dim.height;
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
}
#endif
if (rset.rowstep > 0) { /* Top-down BMP file */
rset.rowstart = 0;
rset.rowstop = bm->height;
} else { /* normal BMP */
rset.rowstart = bm->height - 1;
rset.rowstop = -1;
}
totalsize = get_totalsize(bm, remote);
/* Check if this fits the buffer */
if (totalsize > maxsize) {
@ -310,20 +533,24 @@ int read_bmp_fd(int fd,
return -6;
}
compression = readlong(&bmph.compression);
compression = letoh32(bmph.compression);
if (depth <= 8) {
numcolors = readlong(&bmph.clr_used);
numcolors = letoh32(bmph.clr_used);
if (numcolors == 0)
numcolors = 1 << depth;
} else
numcolors = (compression == 3) ? 3 : 0;
if (numcolors > 0 && numcolors <= 256) {
if (read(fd, palette, numcolors * sizeof(uint32_t))
!= numcolors * (int)sizeof(uint32_t))
{
DEBUGF("read_bmp_fd: Can't read color palette\n");
return -7;
int i;
union rgb_union pal;
for (i = 0; i < numcolors; i++) {
if (read(fd, &pal, sizeof(pal)) != (int)sizeof(pal))
{
DEBUGF("read_bmp_fd: Can't read color palette\n");
return -7;
}
set_rgb_union(&palette[i], pal);
}
}
@ -343,15 +570,27 @@ int read_bmp_fd(int fd,
case 32:
if (compression == 3) { /* BI_BITFIELDS */
if (!memcmp(palette, bitfields[0], 12)) { /* 15 bit */
depth = 15;
break;
bool found;
int i, j;
/* (i == 0) is 15bit, (i == 1) is 16bit, (i == 2) is 32bit */
for (i = 0; i < ARRAY_SIZE(bitfields); i++) {
for (j = 0; j < ARRAY_SIZE(bitfields[0]); j++) {
if (!rgbcmp(palette[j], bitfields[i][j])) {
found = true;
} else {
found = false;
break;
}
}
if (found) {
if (i == 0) /* 15bit */
depth = 15;
break;
}
}
if (!memcmp(palette, bitfields[1], 12) /* 16 bit */
|| !memcmp(palette, bitfields[2], 12)) /* 32 bit */
{
if (found)
break;
}
} /* else fall through */
default:
@ -364,227 +603,104 @@ int read_bmp_fd(int fd,
}
/* Search to the beginning of the image data */
lseek(fd, (off_t)readlong(&bmph.off_bits), SEEK_SET);
lseek(fd, (off_t)letoh32(bmph.off_bits), SEEK_SET);
memset(bitmap, 0, totalsize);
/* loop to read rows and put them to buffer */
for (row = rowstart; row != rowstop; row += rowstep) {
unsigned data, mask;
unsigned char *p;
uint16_t *p2;
uint32_t *rp;
union rgb_union *qp;
union rgb_union q0, q1;
/* read one row */
ret = read(fd, bmpbuf, padded_width);
if (ret != padded_width) {
DEBUGF("read_bmp_fd: error reading image, read returned: %d "
"expected: %d\n", ret, padded_width);
return -9;
}
/* convert whole line in-place to XRGB8888 (little endian) */
rp = bmpbuf + width;
switch (depth) {
case 1:
q0.raw = palette[0];
q1.raw = palette[1];
p = (unsigned char*)bmpbuf + ((width + 7) >> 3);
mask = 0x80 >> ((width + 7) & 7);
while (p > (unsigned char*)bmpbuf) {
data = *(--p);
for (; mask <= 0x80; mask <<= 1)
*(--rp) = (data & mask) ? q1.raw : q0.raw;
mask = 0x01;
}
break;
case 4:
if (width & 1)
rp++;
p = (unsigned char*)bmpbuf + ((width + 1) >> 1);
while (p > (unsigned char*)bmpbuf) {
data = *(--p);
*(--rp) = palette[data & 0x0f];
*(--rp) = palette[data >> 4];
}
break;
case 8:
p = (unsigned char*)bmpbuf + width;
while (p > (unsigned char*)bmpbuf)
*(--rp) = palette[*(--p)];
break;
case 15:
case 16:
p2 = (uint16_t *)bmpbuf + width;
while (p2 > (uint16_t *)bmpbuf) {
unsigned component, rgb;
data = letoh16(*(--p2));
/* blue */
component = (data << 3) & 0xf8;
#ifdef ROCKBOX_BIG_ENDIAN
rgb = (component | (component >> 5)) << 8;
/* green */
data >>= 2;
if (depth == 15) {
component = data & 0xf8;
rgb |= component | (component >> 5);
} else {
data >>= 1;
component = data & 0xfc;
rgb |= component | (component >> 6);
}
/* red */
data >>= 5;
component = data & 0xf8;
rgb = (rgb << 8) | component | (component >> 5);
*(--rp) = rgb << 8;
#else /* little endian */
rgb = component | (component >> 5);
/* green */
data >>= 2;
if (depth == 15) {
component = data & 0xf8;
rgb |= (component | (component >> 5)) << 8;
} else {
data >>= 1;
component = data & 0xfc;
rgb |= (component | (component >> 6)) << 8;
}
/* red */
data >>= 5;
component = data & 0xf8;
rgb |= (component | (component >> 5)) << 16;
*(--rp) = rgb;
struct bmp_args ba = {
.fd = fd, .padded_width = padded_width, .read_width = read_width,
.width = src_dim.width, .depth = depth, .palette = palette,
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
.cur_row = 0, .cur_col = 0, .part = {0,0}
#endif
}
break;
};
case 24:
p = (unsigned char*)bmpbuf + 3 * width;
while (p > (unsigned char*)bmpbuf) {
data = *(--p);
data = (data << 8) | *(--p);
data = (data << 8) | *(--p);
*(--rp) = htole32(data);
}
break;
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
#if LCD_DEPTH == 16
#ifdef HAVE_REMOTE_LCD
if (resize & IMG_RESIZE || remote)
#else
if (resize & IMG_RESIZE)
#endif
#else
if (format == FORMAT_NATIVE)
#endif
return resize_on_load(bm, dither, &src_dim, &rset, remote,
#ifdef HAVE_LCD_COLOR
bitmap + totalsize, maxsize - totalsize,
#endif
store_part_bmp, skip_lines_bmp, &ba);
#endif /* LCD_DEPTH */
case 32: /* already in desired format */
break;
}
int fb_width = get_fb_width(bm, remote);
int col, row;
/* loop to read rows and put them to buffer */
for (row = rset.rowstart; row != rset.rowstop; row += rset.rowstep) {
struct uint8_rgb *qp;
unsigned mask;
unsigned char *p;
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
unsigned int len;
if (!(len = read_part_line(&ba)))
return -9;
#else
if (!read_part_line(&ba))
return -9;
#endif
/* Convert to destination format */
qp = (union rgb_union *)bmpbuf;
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
if (format == FORMAT_NATIVE) {
#if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
if (remote) {
#if (LCD_REMOTE_DEPTH == 2) && (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED)
/* iAudio X5/M5 remote */
fb_remote_data *dest = (fb_remote_data *)bitmap
+ dst_width * (row >> 3);
int shift = row & 7;
int delta = 127;
unsigned bright;
for (col = 0; col < width; col++) {
if (dither)
delta = dither_matrix[row & 0xf][col & 0xf];
bright = brightness(*qp++);
bright = (3 * bright + (bright >> 6) + delta) >> 8;
*dest++ |= vi_pattern[bright] << shift;
}
#endif /* LCD_REMOTE_DEPTH / LCD_REMOTE_PIXELFORMAT */
} else
#endif /* defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1 */
{
#if LCD_DEPTH == 2
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
/* greyscale iPods */
fb_data *dest = (fb_data *)bitmap + dst_width * row;
int shift = 6;
int delta = 127;
unsigned bright;
unsigned data = 0;
for (col = 0; col < width; col++) {
if (dither)
delta = dither_matrix[row & 0xf][col & 0xf];
bright = brightness(*qp++);
bright = (3 * bright + (bright >> 6) + delta) >> 8;
data |= (~bright & 3) << shift;
shift -= 2;
if (shift < 0) {
*dest++ = data;
data = 0;
shift = 6;
}
}
if (shift < 6)
*dest++ = data;
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
/* iriver H1x0 */
fb_data *dest = (fb_data *)bitmap + dst_width * (row >> 2);
int shift = 2 * (row & 3);
int delta = 127;
unsigned bright;
for (col = 0; col < width; col++) {
if (dither)
delta = dither_matrix[row & 0xf][col & 0xf];
bright = brightness(*qp++);
bright = (3 * bright + (bright >> 6) + delta) >> 8;
*dest++ |= (~bright & 3) << shift;
}
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
/* iAudio M3 */
fb_data *dest = (fb_data *)bitmap + dst_width * (row >> 3);
int shift = row & 7;
int delta = 127;
unsigned bright;
for (col = 0; col < width; col++) {
if (dither)
delta = dither_matrix[row & 0xf][col & 0xf];
bright = brightness(*qp++);
bright = (3 * bright + (bright >> 6) + delta) >> 8;
*dest++ |= vi_pattern[bright] << shift;
}
#endif /* LCD_PIXELFORMAT */
#elif LCD_DEPTH == 16
/* iriver h300, colour iPods, X5 */
fb_data *dest = (fb_data *)bitmap + dst_width * row;
int delta = 127;
unsigned r, g, b;
for (col = 0; col < width; col++) {
if (dither)
delta = dither_matrix[row & 0xf][col & 0xf];
q0 = *qp++;
r = (31 * q0.red + (q0.red >> 3) + delta) >> 8;
g = (63 * q0.green + (q0.green >> 2) + delta) >> 8;
b = (31 * q0.blue + (q0.blue >> 3) + delta) >> 8;
*dest++ = LCD_RGBPACK_LCD(r, g, b);
}
#endif /* LCD_DEPTH */
}
} else
#endif /* (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1) */
qp = (struct uint8_rgb *) ba.buf;
#if LCD_DEPTH == 16
if (format == FORMAT_NATIVE)
{
p = bitmap + dst_width * (row >> 3);
mask = 1 << (row & 7);
/* iriver h300, colour iPods, X5 */
fb_data *dest = (fb_data *)bitmap + fb_width * row;
int delta = 127;
unsigned r, g, b;
struct uint8_rgb q0;
for (col = 0; col < width; col++, p++)
for (col = 0; col < src_dim.width; col++) {
if (dither)
delta = dither_mat(row & 0xf, col & 0xf);
if (!len)
{
if(!(len = read_part_line(&ba)))
return -9;
else
qp = (struct uint8_rgb *)ba.buf;
}
q0 = *qp++;
len--;
r = (31 * q0.red + (q0.red >> 3) + delta) >> 8;
g = (63 * q0.green + (q0.green >> 2) + delta) >> 8;
b = (31 * q0.blue + (q0.blue >> 3) + delta) >> 8;
*dest++ = LCD_RGBPACK_LCD(r, g, b);
}
}
else
#endif
{
p = bitmap + fb_width * (row >> 3);
mask = 1 << (row & 7);
for (col = 0; col < src_dim.width; col++)
{
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
if (!len)
{
if(!(len = read_part_line(&ba)))
return -9;
else
qp = (struct uint8_rgb *)ba.buf;
}
len--;
#endif
if (brightness(*qp++) < 128)
*p |= mask;
p++;
}
}
}
return totalsize; /* return the used buffer size. */
}

157
apps/recorder/bmp.h
View file

@ -23,6 +23,163 @@
#include "config.h"
#include "lcd.h"
#include "inttypes.h"
#ifdef HAVE_REMOTE_LCD
#include "lcd-remote.h"
#endif
#define ARRAY_SIZE(array) (int)(sizeof(array)/(sizeof(array[0])))
#define IMG_NORESIZE 0
#define IMG_RESIZE 1
#if LCD_DEPTH > 1 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
#define MAX_WIDTH 8
#else
#define MAX_WIDTH LCD_WIDTH
#endif
struct uint8_rgb {
uint8_t blue;
uint8_t green;
uint8_t red;
};
struct dim {
short width;
short height;
};
struct rowset {
short rowstep;
short rowstart;
short rowstop;
};
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
extern const unsigned char dither_matrix[16][16];
static inline unsigned char dither_mat(unsigned int x, unsigned int y)
{
return dither_matrix[y][x];
}
#endif
static inline unsigned brightness(struct uint8_rgb color)
{
return (3 * (unsigned)color.red + 6 * (unsigned)color.green
+ (unsigned)color.blue) / 10;
}
#if ((LCD_DEPTH == 2) && (LCD_PIXELFORMAT == VERTICAL_INTERLEAVED)) \
|| (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH == 2) \
&& (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED))
extern const unsigned short vi_pattern[4];
static inline unsigned short vi_pat(unsigned int bright)
{
return vi_pattern[bright];
}
#endif
static inline int get_fb_height(struct bitmap *bm, bool remote)
{
const int height = bm->height;
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
const int format = bm->format;
#endif
int dst_height;
#if !defined(HAVE_REMOTE_LCD) || \
(defined(HAVE_REMOTE_LCD) &&(LCD_REMOTE_DEPTH == 1))
(void) remote;
#endif
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
if (format == FORMAT_NATIVE) {
#if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
if (remote) {
#if (LCD_REMOTE_DEPTH == 2) && (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED)
dst_height = (height + 7) >> 3;
#endif /* LCD_REMOTE_DEPTH / LCD_REMOTE_PIXELFORMAT */
} else
#endif /* defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1 */
{
#if LCD_DEPTH == 2
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
dst_height = height;
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
dst_height = (height + 3) >> 2;
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
dst_height = (height + 7) >> 3;
#endif /* LCD_PIXELFORMAT */
#elif LCD_DEPTH == 16
dst_height = height;
#endif /* LCD_DEPTH */
}
} else
#endif /* (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1) */
{
dst_height = (height + 7) >> 3;
}
return dst_height;
}
static inline int get_fb_width(struct bitmap *bm, bool remote)
{
const int width = bm->width;
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
const int format = bm->format;
#endif
int dst_width;
#if !defined(HAVE_REMOTE_LCD) || \
(defined(HAVE_REMOTE_LCD) &&(LCD_REMOTE_DEPTH == 1))
(void) remote;
#endif
#if (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
if (format == FORMAT_NATIVE) {
#if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
if (remote) {
#if (LCD_REMOTE_DEPTH == 2) && (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED)
dst_width = width;
#endif /* LCD_REMOTE_DEPTH / LCD_REMOTE_PIXELFORMAT */
} else
#endif /* defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1 */
{
#if LCD_DEPTH == 2
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
dst_width = (width + 3) >> 2;
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
dst_width = width;
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
dst_width = width;
#endif /* LCD_PIXELFORMAT */
#elif LCD_DEPTH == 16
dst_width = width;
#endif /* LCD_DEPTH */
}
} else
#endif /* (LCD_DEPTH > 1) || defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1) */
{
dst_width = width;
}
return dst_width;
}
static inline int get_totalsize(struct bitmap *bm, bool remote)
{
int sz;
#if defined(HAVE_REMOTE_LCD) && \
(LCD_REMOTE_DEPTH == 2) && (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED)
if (remote)
sz = sizeof(fb_remote_data);
else
#endif /* LCD_REMOTE_DEPTH / LCD_REMOTE_PIXELFORMAT */
sz = sizeof(fb_data);
return get_fb_width(bm, remote) * get_fb_height(bm, remote) * sz;
}
/*********************************************************************
* read_bmp_file()

718
apps/recorder/resize.c Normal file
View file

@ -0,0 +1,718 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id
*
* Copyright (C) 2008 by Akio Idehara, Andrew Mahone
*
* 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.
*
****************************************************************************/
/*
* Implementation of area average and linear row and vertical scalers, and
* nearest-neighbor grey scaler (C) 2008 Andrew Mahone
*
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "inttypes.h"
#include "debug.h"
#include "lcd.h"
#include "file.h"
#ifdef HAVE_REMOTE_LCD
#include "lcd-remote.h"
#endif
#ifdef ROCKBOX_DEBUG_SCALERS
#define SDEBUGF DEBUGF
#else
#define SDEBUGF(...)
#endif
#ifndef __PCTOOL__
#include "config.h"
#include "system.h"
#include "bmp.h"
#include "resize.h"
#include "resize.h"
#include "debug.h"
#else
#undef DEBUGF
#define DEBUGF(...)
#endif
#ifdef HAVE_LCD_COLOR
#define PACKRED(r, delta) ((31 * r + (r >> 3) + delta) >> 8)
#define PACKGREEN(g, delta) ((63 * g + (g >> 2) + delta) >> 8)
#define PACKBLUE(b, delta) ((31 * b + (b >> 3) + delta) >> 8)
#define FILL_BUF_INIT(img_part, store_part, args) { \
part = store_part(args); \
if (part == NULL) \
return false; \
}
#define FILL_BUF(img_part, store_part, args) { \
if (part->len == 0) \
part = store_part(args); \
if (part == NULL) \
return false; \
}
struct uint32_rgb {
uint32_t r;
uint32_t g;
uint32_t b;
};
struct scaler_context {
uint32_t divmul;
uint32_t round;
struct img_part* (*store_part)(void *);
long last_tick;
unsigned char *buf;
int len;
void *args;
};
static void scale_h_area_setup(struct bitmap *bm, struct dim *src,
struct scaler_context *ctx)
{
(void) bm;
ctx->divmul = ((src->width - 1 + 0x80000000U) / src->width) << 1;
ctx->round = (src->width + 1) >> 1;
}
/* horizontal area average scaler */
static bool scale_h_area(struct bitmap *bm, struct dim *src,
struct uint32_rgb *out_line,
struct scaler_context *ctx, bool accum)
{
SDEBUGF("scale_h_area\n");
unsigned int ix, ox, oxe, mul;
struct uint32_rgb rgbval1, rgbval2;
struct img_part *part;
FILL_BUF_INIT(part,ctx->store_part,ctx->args);
ox = 0;
oxe = 0;
rgbval1.r = 0;
rgbval1.g = 0;
rgbval1.b = 0;
rgbval2.r = 0;
rgbval2.g = 0;
rgbval2.b = 0;
mul = 0;
for (ix = 0; ix < (unsigned int)src->width; ix++)
{
oxe += bm->width;
if (oxe >= (unsigned int)src->width)
{
if (ctx->last_tick != current_tick)
{
yield();
ctx->last_tick = current_tick;
}
oxe -= src->width;
rgbval1.r = rgbval1.r * bm->width + rgbval2.r * mul;
rgbval1.g = rgbval1.g * bm->width + rgbval2.g * mul;
rgbval1.b = rgbval1.b * bm->width + rgbval2.b * mul;
FILL_BUF(part,ctx->store_part,ctx->args);
rgbval2.r = part->buf->red;
rgbval2.g = part->buf->green;
rgbval2.b = part->buf->blue;
part->buf++;
part->len--;
mul = bm->width - oxe;
rgbval1.r += rgbval2.r * mul;
rgbval1.g += rgbval2.g * mul;
rgbval1.b += rgbval2.b * mul;
out_line[ox].r = (accum ? out_line[ox].r : 0) +
(((uint64_t)rgbval1.r + ctx->round) *
ctx->divmul >> 32);
out_line[ox].g = (accum ? out_line[ox].g : 0) +
(((uint64_t)rgbval1.g + ctx->round) *
ctx->divmul >> 32);
out_line[ox].b = (accum ? out_line[ox].b : 0) +
(((uint64_t)rgbval1.b + ctx->round) *
ctx->divmul >> 32);
rgbval1.r = 0;
rgbval1.g = 0;
rgbval1.b = 0;
mul = bm->width - mul;
ox += 1;
} else {
FILL_BUF(part,ctx->store_part,ctx->args);
rgbval1.r += part->buf->red;
rgbval1.g += part->buf->green;
rgbval1.b += part->buf->blue;
part->buf++;
part->len--;
}
}
return true;
}
/* vertical area average scaler */
static bool scale_v_area(struct bitmap *bm, bool dither, struct dim *src,
struct rowset *rset,
bool (*h_scaler)(struct bitmap*, struct dim*,
struct uint32_rgb*,
struct scaler_context*, bool),
struct scaler_context *ctx)
{
uint32_t mul, divmul, x, oy, iy, oye, round;
int delta = 127, r, g, b;
fb_data *row, *pix;
divmul = ((src->height - 1 + 0x80000000U) / src->height) << 1;
round = (src->height + 1) >> 1;
mul = 0;
oy = 0;
oye = 0;
struct uint32_rgb *crow1 = (struct uint32_rgb *)(ctx->buf),
*crow2 = crow1 + bm->width;
SDEBUGF("scale_v_area\n");
memset((void *)ctx->buf, 0, bm->width * 2 * sizeof(struct uint32_rgb));
row = (fb_data *)(bm->data) + bm->width *
(rset->rowstep == -1 ? bm->height - 1 : 0);
for (iy = 0; iy < (unsigned int)src->height; iy++)
{
oye += bm->height;
if (oye >= (unsigned int)src->height)
{
oye -= src->height;
for (x = 0; x < 3 *(unsigned int)bm->width; x++)
((uint32_t*)crow1)[x] = ((uint32_t*)crow1)[x] *
bm->height + mul *
((uint32_t*)crow2)[x];
if(!h_scaler(bm, src, crow2, ctx, false))
goto fail;
mul = bm->height - oye;
for (x = 0; x < 3 *(unsigned int)bm->width; x++)
{
((uint32_t*)crow1)[x] += mul * ((uint32_t*)crow2)[x];
((uint32_t*)crow1)[x] = (uint64_t)(round +
((uint32_t*)crow1)[x]) *
divmul >> 32;
}
pix = row;
for (x = 0; x < (unsigned int)bm->width; x++)
{
if (dither)
delta = dither_mat(x & 0xf, oy & 0xf);
r = PACKRED(crow1[x].r,delta);
g = PACKGREEN(crow1[x].g,delta);
b = PACKBLUE(crow1[x].b,delta);
*pix++ = LCD_RGBPACK_LCD(r, g, b);
}
memset((void *)crow1, 0, bm->width * sizeof(struct uint32_rgb));
mul = oye;
row += bm->width * rset->rowstep;
oy += 1;
} else {
if (!h_scaler(bm, src, crow1, ctx, true))
goto fail;
}
}
return true;
fail:
return false;
}
#ifdef HAVE_UPSCALER
static void scale_h_linear_setup(struct bitmap *bm, struct dim *src,
struct scaler_context *ctx)
{
(void) src;
ctx->divmul = ((bm->width - 2 + 0x80000000U) / (bm->width - 1)) << 1;
ctx->round = bm->width >> 1;
}
/* horizontal linear scaler */
static bool scale_h_linear(struct bitmap *bm, struct dim *src,
struct uint32_rgb *out_line,
struct scaler_context *ctx, bool accum)
{
unsigned int ix, ox, ixe;
struct uint32_rgb rgbval=rgbval, rgbinc=rgbinc;
struct img_part *part;
SDEBUGF("scale_h_linear\n");
FILL_BUF_INIT(part,ctx->store_part,ctx->args);
ix = 0;
ixe = bm->width - 1;
for (ox = 0; ox < (uint32_t)bm->width; ox++) {
if (ixe >= ((uint32_t)bm->width - 1))
{
if (ctx->last_tick != current_tick)
{
yield();
ctx->last_tick = current_tick;
}
ixe -= (bm->width - 1);
rgbinc.r = -(part->buf->red);
rgbinc.g = -(part->buf->green);
rgbinc.b = -(part->buf->blue);
rgbval.r = (part->buf->red) * (bm->width - 1);
rgbval.g = (part->buf->green) * (bm->width - 1);
rgbval.b = (part->buf->blue) * (bm->width - 1);
ix += 1;
if (ix < (uint32_t)src->width) {
part->buf++;
part->len--;
FILL_BUF(part,ctx->store_part,ctx->args);
rgbinc.r += part->buf->red;
rgbinc.g += part->buf->green;
rgbinc.b += part->buf->blue;
rgbval.r += rgbinc.r * ixe;
rgbval.g += rgbinc.g * ixe;
rgbval.b += rgbinc.b * ixe;
}
rgbinc.r *= src->width - 1;
rgbinc.g *= src->width - 1;
rgbinc.b *= src->width - 1;
}
out_line[ox].r = (accum ? out_line[ox].r : 0) +
(((uint64_t)rgbval.r + ctx->round) *
ctx->divmul >> 32);
out_line[ox].g = (accum ? out_line[ox].g : 0) +
(((uint64_t)rgbval.g + ctx->round) *
ctx->divmul >> 32);
out_line[ox].b = (accum ? out_line[ox].b : 0) +
(((uint64_t)rgbval.b + ctx->round) *
ctx->divmul >> 32);
rgbval.r += rgbinc.r;
rgbval.g += rgbinc.g;
rgbval.b += rgbinc.b;
ixe += src->width - 1;
}
return true;
}
/* vertical linear scaler */
static bool scale_v_linear(struct bitmap *bm, bool dither, struct dim *src,
struct rowset *rset,
bool (*h_scaler)(struct bitmap*, struct dim*,
struct uint32_rgb*,
struct scaler_context*, bool),
struct scaler_context *ctx)
{
uint32_t mul, divmul, x, oy, iy, iye, round;
int delta = 127;
struct uint32_rgb p;
fb_data *row, *pix;
divmul = ((bm->height - 2 + 0x80000000U) / (bm->height - 1)) << 1;
round = bm->height >> 1;
mul = 0;
iy = 0;
iye = bm->height - 1;
struct uint32_rgb *crow1 = (struct uint32_rgb *)(ctx->buf),
*crow2 = crow1 + bm->width,
*t;
SDEBUGF("scale_v_linear\n");
row = (fb_data *)(bm->data) + bm->width *
(rset->rowstep == -1 ? bm->height - 1 : 0);
if(!h_scaler(bm, src, crow2, ctx, false))
goto fail;
for (oy = 0; oy < (uint32_t)bm->height; oy++)
{
if (iye >= (uint32_t)bm->height - 1)
{
t = crow2;
crow2 = crow1;
crow1 = t;
iye -= bm->height - 1;
iy += 1;
if (iy < (uint32_t)src->height)
{
if (!h_scaler(bm, src, crow2, ctx, false))
goto fail;
}
}
pix = row;
for (x = 0; x < (uint32_t)bm->width; x++)
{
p.r = (uint64_t)(crow1[x].r * (bm->height - 1 - iye) +
crow2[x].r * iye + round) * divmul >> 32;
p.g = (uint64_t)(crow1[x].g * (bm->height - 1 - iye) +
crow2[x].g * iye + round) * divmul >> 32;
p.b = (uint64_t)(crow1[x].b * (bm->height - 1 - iye) +
crow2[x].b * iye + round) * divmul >> 32;
if (dither)
delta = dither_mat(x & 0xf, oy & 0xf);
p.r = PACKRED(p.r,delta);
p.g = PACKGREEN(p.g,delta);
p.b = PACKBLUE(p.b,delta);
*pix++ = LCD_RGBPACK_LCD(p.r, p.g, p.b);
}
row += bm->width * rset->rowstep;
iye += src->height - 1;
}
return true;
fail:
return false;
}
#endif /* HAVE_UPSCALER */
#endif /* HAVE_LCD_COLOR */
#if LCD_DEPTH < 8 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH < 8)
/* nearest-neighbor up/down/non-scaler */
static inline bool scale_nearest(struct bitmap *bm,
struct dim *src,
struct rowset *rset,
bool remote, bool dither,
struct img_part* (*store_part)(void *args),
bool (*skip_lines)(void *args, unsigned int),
void *args)
{
const int sw = src->width;
const int sh = src->height;
const int dw = bm->width;
const int dh = bm->height;
unsigned char *bitmap = bm->data;
const int rowstep = rset->rowstep;
const int rowstart = rset->rowstart;
const int rowstop = rset->rowstop;
const int fb_width = get_fb_width(bm, false);
long last_tick = current_tick;
int ix, ox, lx, xe, iy, oy, ly, ye, yet, oyt;
int ixls, xels, iyls, yelsi, oyls, yelso, p;
struct img_part *cur_part;
#ifndef HAVE_LCD_COLOR
fb_data *dest, *dest_t;
#endif
#ifdef HAVE_REMOTE_LCD
fb_remote_data *rdest, *rdest_t;
#endif
SDEBUGF("scale_nearest sw=%d sh=%d dw=%d dh=%d remote=%d\n", sw, sh, dw,
dh, remote);
ly = 0;
iy = 0;
ye = 0;
ixls = (sw > (dw - 1) && dw > 1) ? sw / (dw - 1) : 1;
xels = sw - ixls * (dw - 1) + (dw == 1 ? 1 : 0);
iyls = (sh > (dh - 1) && dh > 1) ? sh / (dh - 1) : 1;
oyls = dh > sh ? dh / sh : 1;
yelsi = iyls * (dh - 1) + (dh == 1 ? 1 : 0);
yelso = oyls * sh;
oyls *= rowstep;
int delta = 127;
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING || \
(defined(HAVE_REMOTE_LCD) && LCD_REMOTE_PIXELFORMAT == HORIZONTAL_PACKING)
uint8_t buf[4];
int data, oxt;
#endif
#if LCD_PIXELFORMAT == VERTICAL_PACKING || \
LCD_PIXELFORMAT == VERTICAL_INTERLEAVED || \
(defined(HAVE_REMOTE_LCD) && \
(LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED || \
LCD_REMOTE_PIXELFORMAT == VERTICAL_PACKING))
int bright, shift;
#endif
for (oy = rowstart; oy != rowstop;) {
SDEBUGF("oy=%d iy=%d\n", oy, iy);
if (last_tick != current_tick)
{
yield();
last_tick = current_tick;
}
if (iy > ly && !skip_lines(args, iy - ly - 1))
return false;
ly = iy;
cur_part = store_part(args);
if (cur_part == NULL)
return false;
lx = 0;
ix = 0;
xe = 0;
#if defined(HAVE_REMOTE_LCD) && !defined(HAVE_LCD_COLOR)
if(!remote)
#else
(void)remote;
#endif
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
dest = (fb_data *)bitmap + fb_width * oy;
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
dest = (fb_data *)bitmap + fb_width * (oy >> 2);
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
dest = (fb_data *)bitmap + fb_width * (oy >> 3);
#endif
#ifdef HAVE_REMOTE_LCD
#ifndef HAVE_LCD_COLOR
else
#endif
rdest = (fb_remote_data *)bitmap + fb_width * (oy >> 3);
#endif
for (ox = 0; ox < dw; ox++) {
while (cur_part->len <= ix - lx)
{
lx += cur_part->len;
cur_part = store_part(args);
if (cur_part == NULL)
return false;
}
cur_part->len -= ix - lx;
cur_part->buf += ix - lx;
lx = ix;
#if defined(HAVE_REMOTE_LCD) && !defined(HAVE_LCD_COLOR)
if(!remote)
{
#endif
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
/* greyscale iPods */
buf[ox & 3] = brightness(*(cur_part->buf));
if ((ox & 3) == 3 || ox == dw - 1)
{
dest_t = dest++;
oyt = oy;
yet = ye;
int xo = ox & ~3;
while(yet < dh)
{
data = 0;
for (oxt = 0; oxt < (ox & 3) + 1; oxt++)
{
if (dither)
delta = dither_mat(oyt & 0xf, (xo + oxt) & 0xf);
p = (3 * buf[oxt] + (buf[oxt] >> 6) + delta) >> 8;
data |= (~p & 3) << ((3 - oxt) << 1);
}
*dest_t = data;
dest_t += rowstep * fb_width;
yet += sh;
oyt += 1;
}
}
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
/* iriver H1x0 */
bright = brightness(*(cur_part->buf));
dest_t = dest++;
oyt = oy;
yet = ye;
while(yet < dh)
{
shift = (oyt & 3) << 1;
if (dither)
delta = dither_mat(oyt & 0xf, ox & 0xf);
p = (3 * bright + (bright >> 6) + delta) >> 8;
*dest_t |= (~p & 3) << shift;
if ((rowstep > 0 && shift == 6) || shift == 0)
dest_t += rowstep * fb_width;
yet += sh;
oyt += 1;
}
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
bright = brightness(*(cur_part->buf));
dest_t = dest++;
oyt = oy;
yet = ye;
while(yet < dh)
{
shift = oyt & 7;
if (dither)
delta = dither_mat(oyt & 0xf, ox & 0xf);
p = (3 * bright + (bright >> 6) + delta) >> 8;
*dest_t |= vi_pat(p) << shift;
if ((rowstep > 0 && shift == 7) || shift == 0)
dest_t += rowstep * fb_width;
yet += sh;
oyt += 1;
}
#endif /* LCD_PIXELFORMAT */
#ifdef HAVE_REMOTE_LCD
#ifndef HAVE_LCD_COLOR
} else
#endif
{
#if LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED
bright = brightness(*(cur_part->buf));
rdest_t = rdest++;
oyt = oy;
yet = ye;
while(yet < dh)
{
shift = oyt & 7;
if (dither)
delta = dither_mat(oyt & 0xf, ox & 0xf);
p = (3 * bright + (bright >> 6) + delta) >> 8;
*rdest_t |= vi_pat(p) << shift;
if ((rowstep > 0 && shift == 7) || shift == 0)
rdest_t += rowstep * fb_width;
yet += sh;
oyt += 1;
}
#else
bright = brightness(*(cur_part->buf));
rdest_t = rdest++;
oyt = oy;
yet = ye;
while(yet < dh)
{
shift = oyt & 7;
if (dither)
delta = dither_mat(oyt & 0xf, ox & 0xf);
p = (bright + delta) >> 8;
*rdest_t |= (~p & 1) << shift;
if ((rowstep > 0 && shift == 7) || shift == 0)
rdest_t += rowstep * fb_width;
yet += sh;
oyt += 1;
}
#endif
}
#endif
xe += xels;
ix += ixls;
while (xe >= dw)
{
xe -= dw - 1;
ix += 1;
}
}
oy += oyls;
ye += yelso;
while (ye < dh)
{
ye += sh;
oy += rowstep;
}
iy += iyls;
ye -= yelsi;
while (ye >= dh)
{
ye -= dh - 1;
iy += 1;
}
}
return true;
}
#endif
int resize_on_load(struct bitmap *bm, bool dither, struct dim *src,
struct rowset *rset, bool remote,
#ifdef HAVE_LCD_COLOR
unsigned char *buf, unsigned int len,
#endif
struct img_part* (*store_part)(void *args),
bool (*skip_lines)(void *args, unsigned int lines),
void *args)
{
#if defined(HAVE_LCD_COLOR) && !defined(HAVE_REMOTE_LCD)
(void)skip_lines;
#endif
#ifdef HAVE_LCD_COLOR
#ifdef HAVE_REMOTE_LCD
if (!remote)
#endif
{
#ifdef HAVE_UPSCALER
const int sw = src->width;
const int sh = src->height;
const int dw = bm->width;
const int dh = bm->height;
#endif
int ret;
unsigned int needed = sizeof(struct uint32_rgb) * 2 * bm->width;
#if MAX_SC_STACK_ALLOC
uint8_t sc_buf[(needed <= len || needed > MAX_SC_STACK_ALLOC) ?
0 : needed];
#endif
if (needed > len)
{
#if MAX_SC_STACK_ALLOC
if (needed > MAX_SC_STACK_ALLOC)
{
DEBUGF("unable to allocate required buffer: %d needed, "
"%d available, %d permitted from stack\n",
needed, len, MAX_SC_STACK_ALLOC);
return 0;
}
if (sizeof(sc_buf) < needed)
{
DEBUGF("failed to allocate large enough buffer on stack: "
"%d needed, only got %d",
needed, MAX_SC_STACK_ALLOC);
return 0;
}
#else
DEBUGF("unable to allocate required buffer: %d needed, "
"%d available\n", needed, len);
return 0;
#endif
}
bool (*h_scaler)(struct bitmap*, struct dim*,
struct uint32_rgb*,
struct scaler_context*, bool);
struct scaler_context ctx;
ctx.last_tick = current_tick;
cpu_boost(true);
#ifdef HAVE_UPSCALER
if (sw > dw)
{
#endif
h_scaler = scale_h_area;
scale_h_area_setup(bm, src, &ctx);
#ifdef HAVE_UPSCALER
} else {
h_scaler = scale_h_linear;
scale_h_linear_setup(bm, src, &ctx);
}
#endif
ctx.store_part = store_part;
ctx.args = args;
#if MAX_SC_STACK_ALLOC
ctx.buf = needed > len ? sc_buf : buf;
#else
ctx.buf = buf;
#endif
ctx.len = len;
#ifdef HAVE_UPSCALER
if (sh > dh)
#endif
ret = scale_v_area(bm, dither, src, rset, h_scaler, &ctx);
#ifdef HAVE_UPSCALER
else
ret = scale_v_linear(bm, dither, src, rset, h_scaler, &ctx);
#endif
cpu_boost(false);
if (!ret)
return 0;
}
#ifdef HAVE_REMOTE_LCD
else
#endif
#endif /* HAVE_LCD_COLOR */
#if !defined(HAVE_LCD_COLOR) || defined(HAVE_REMOTE_LCD)
{
if (!scale_nearest(bm, src, rset, remote, dither, store_part,
skip_lines, args))
return 0;
}
#endif /* !HAVE_LCD_COLOR || HAVE_REMOTE_LCD*/
return get_totalsize(bm, remote);
}

60
apps/recorder/resize.h Normal file
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@ -0,0 +1,60 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id
*
* Copyright (C) 2008 by Akio Idehara
*
* 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.
*
****************************************************************************/
#ifndef _RESIZE_H_
#define _RESIZE_H_
#include "config.h"
#include "lcd.h"
/****************************************************************
* resize_on_load()
*
* resize bitmap on load with scaling
*
* If HAVE_LCD_COLOR then this func use smooth scaling algorithm
* - downscaling both way use "Area Sampling"
* if IMG_RESIZE_BILINER or IMG_RESIZE_NEAREST is NOT set
* - otherwise "Bilinear" or "Nearest Neighbour"
*
* If !(HAVE_LCD_COLOR) then use simple scaling algorithm "Nearest Neighbour"
*
* return -1 for error
****************************************************************/
/* nothing needs the on-stack buffer right now */
#define MAX_SC_STACK_ALLOC 0
#define HAVE_UPSCALER 1
struct img_part {
int len;
struct uint8_rgb* buf;
};
int resize_on_load(struct bitmap *bm, bool dither,
struct dim *src,
struct rowset *tmp_row, bool remote,
#ifdef HAVE_LCD_COLOR
unsigned char *buf, unsigned int len,
#endif
struct img_part* (*store_part)(void *args),
bool (*skip_lines)(void *args, unsigned int lines),
void *args);
#endif /* _RESIZE_H_ */

1
docs/CREDITS
View file

@ -434,6 +434,7 @@ Alex Bennee
Stéphane Quertinmont
Bartosz Fabianowski
Adam Hogan
Andrew Mahone
The libmad team

2
firmware/export/lcd.h
View file

@ -368,6 +368,8 @@ enum
#define FORMAT_TRANSPARENT 0x40000000
#define FORMAT_DITHER 0x20000000
#define FORMAT_REMOTE 0x10000000
#define FORMAT_RESIZE 0x08000000
#define FORMAT_KEEP_ASPECT 0x04000000
#define TRANSPARENT_COLOR LCD_RGBPACK(255,0,255)
#define REPLACEWITHFG_COLOR LCD_RGBPACK(0,255,255)