aligned dwords. */
static void draw_background_line(int line, int start, int npixels)
{
- uint32_t *bgptr = &__vesacon_background[line][start];
- unsigned int bytes_per_pixel = __vesacon_bytes_per_pixel;
- size_t fbptr = line*__vesa_info.mi.logical_scan + start*bytes_per_pixel;
+ uint32_t *bgptr = &__vesacon_background[line][start];
+ unsigned int bytes_per_pixel = __vesacon_bytes_per_pixel;
+ size_t fbptr = line * __vesa_info.mi.logical_scan + start * bytes_per_pixel;
- __vesacon_copy_to_screen(fbptr, bgptr, npixels);
+ __vesacon_copy_to_screen(fbptr, bgptr, npixels);
}
/* This draws the border, then redraws the text area */
static void draw_background(void)
{
- int i;
- const int bottom_border = VIDEO_BORDER +
- (TEXT_PIXEL_ROWS % __vesacon_font_height);
- const int right_border = VIDEO_BORDER + (TEXT_PIXEL_COLS % FONT_WIDTH);
+ int i;
+ const int bottom_border = VIDEO_BORDER +
+ (TEXT_PIXEL_ROWS % __vesacon_font_height);
+ const int right_border = VIDEO_BORDER + (TEXT_PIXEL_COLS % FONT_WIDTH);
- for (i = 0; i < VIDEO_BORDER; i++)
- draw_background_line(i, 0, VIDEO_X_SIZE);
+ for (i = 0; i < VIDEO_BORDER; i++)
+ draw_background_line(i, 0, VIDEO_X_SIZE);
- for (i = VIDEO_BORDER; i < VIDEO_Y_SIZE-bottom_border; i++) {
- draw_background_line(i, 0, VIDEO_BORDER);
- draw_background_line(i, VIDEO_X_SIZE-right_border, right_border);
- }
+ for (i = VIDEO_BORDER; i < VIDEO_Y_SIZE - bottom_border; i++) {
+ draw_background_line(i, 0, VIDEO_BORDER);
+ draw_background_line(i, VIDEO_X_SIZE - right_border, right_border);
+ }
- for (i = VIDEO_Y_SIZE-bottom_border; i < VIDEO_Y_SIZE; i++)
- draw_background_line(i, 0, VIDEO_X_SIZE);
+ for (i = VIDEO_Y_SIZE - bottom_border; i < VIDEO_Y_SIZE; i++)
+ draw_background_line(i, 0, VIDEO_X_SIZE);
- __vesacon_redraw_text();
+ __vesacon_redraw_text();
}
-static int read_png_file(FILE *fp)
+static int read_png_file(FILE * fp)
{
- png_structp png_ptr = NULL;
- png_infop info_ptr = NULL;
- png_infop end_ptr = NULL;
+ png_structp png_ptr = NULL;
+ png_infop info_ptr = NULL;
+ png_infop end_ptr = NULL;
#if 0
- png_color_16p image_background;
- static const png_color_16 my_background = {0,0,0,0,0};
+ png_color_16p image_background;
+ static const png_color_16 my_background = { 0, 0, 0, 0, 0 };
#endif
- png_bytep row_pointers[VIDEO_Y_SIZE];
- int passes;
- int i;
- int rv = -1;
+ png_bytep row_pointers[VIDEO_Y_SIZE];
+ int passes;
+ int i;
+ int rv = -1;
- png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
- NULL, NULL, NULL);
+ png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
- info_ptr = png_create_info_struct(png_ptr);
- end_ptr = png_create_info_struct(png_ptr);
+ info_ptr = png_create_info_struct(png_ptr);
+ end_ptr = png_create_info_struct(png_ptr);
- if (!png_ptr || !info_ptr || !end_ptr ||
- setjmp(png_jmpbuf(png_ptr)))
- goto err;
+ if (!png_ptr || !info_ptr || !end_ptr || setjmp(png_jmpbuf(png_ptr)))
+ goto err;
- png_init_io(png_ptr, fp);
- png_set_sig_bytes(png_ptr, 8);
+ png_init_io(png_ptr, fp);
+ png_set_sig_bytes(png_ptr, 8);
- png_set_user_limits(png_ptr, VIDEO_X_SIZE, VIDEO_Y_SIZE);
+ png_set_user_limits(png_ptr, VIDEO_X_SIZE, VIDEO_Y_SIZE);
- png_read_info(png_ptr, info_ptr);
+ png_read_info(png_ptr, info_ptr);
- /* Set the appropriate set of transformations. We need to end up
- with 32-bit BGRA format, no more, no less. */
+ /* Set the appropriate set of transformations. We need to end up
+ with 32-bit BGRA format, no more, no less. */
- /* Expand to RGB first... */
- if (info_ptr->color_type & PNG_COLOR_MASK_PALETTE)
- png_set_palette_to_rgb(png_ptr);
- else if (!(info_ptr->color_type & PNG_COLOR_MASK_COLOR))
- png_set_gray_to_rgb(png_ptr);
+ /* Expand to RGB first... */
+ if (info_ptr->color_type & PNG_COLOR_MASK_PALETTE)
+ png_set_palette_to_rgb(png_ptr);
+ else if (!(info_ptr->color_type & PNG_COLOR_MASK_COLOR))
+ png_set_gray_to_rgb(png_ptr);
- /* Add alpha channel, if need be */
- if (!(png_ptr->color_type & PNG_COLOR_MASK_ALPHA)) {
- if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
- png_set_tRNS_to_alpha(png_ptr);
- else
- png_set_add_alpha(png_ptr, ~0, PNG_FILLER_AFTER);
- }
+ /* Add alpha channel, if need be */
+ if (!(png_ptr->color_type & PNG_COLOR_MASK_ALPHA)) {
+ if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
+ png_set_tRNS_to_alpha(png_ptr);
+ else
+ png_set_add_alpha(png_ptr, ~0, PNG_FILLER_AFTER);
+ }
- /* Adjust the byte order, if necessary */
- png_set_bgr(png_ptr);
+ /* Adjust the byte order, if necessary */
+ png_set_bgr(png_ptr);
- /* Make sure we end up with 8-bit data */
- if (info_ptr->bit_depth == 16)
- png_set_strip_16(png_ptr);
- else if (info_ptr->bit_depth < 8)
- png_set_packing(png_ptr);
+ /* Make sure we end up with 8-bit data */
+ if (info_ptr->bit_depth == 16)
+ png_set_strip_16(png_ptr);
+ else if (info_ptr->bit_depth < 8)
+ png_set_packing(png_ptr);
#if 0
- if (png_get_bKGD(png_ptr, info_ptr, &image_background))
- png_set_background(png_ptr, image_background,
- PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
- else
- png_set_background(png_ptr, &my_background,
- PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+ if (png_get_bKGD(png_ptr, info_ptr, &image_background))
+ png_set_background(png_ptr, image_background,
+ PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ else
+ png_set_background(png_ptr, &my_background,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
#endif
- /* Whew! Now we should get the stuff we want... */
- for (i = 0; i < (int)info_ptr->height; i++)
- row_pointers[i] = (void *)__vesacon_background[i];
+ /* Whew! Now we should get the stuff we want... */
+ for (i = 0; i < (int)info_ptr->height; i++)
+ row_pointers[i] = (void *)__vesacon_background[i];
- passes = png_set_interlace_handling(png_ptr);
+ passes = png_set_interlace_handling(png_ptr);
- for (i = 0; i < passes; i++)
- png_read_rows(png_ptr, row_pointers, NULL, info_ptr->height);
+ for (i = 0; i < passes; i++)
+ png_read_rows(png_ptr, row_pointers, NULL, info_ptr->height);
- rv = 0;
+ rv = 0;
- err:
- if (png_ptr)
- png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
- return rv;
+err:
+ if (png_ptr)
+ png_destroy_read_struct(&png_ptr, (png_infopp) NULL, (png_infopp) NULL);
+ return rv;
}
-static int jpeg_sig_cmp(uint8_t *bytes, int len)
+static int jpeg_sig_cmp(uint8_t * bytes, int len)
{
- (void)len;
- return (bytes[0] == 0xff && bytes[1] == 0xd8) ? 0 : -1;
+ (void)len;
+ return (bytes[0] == 0xff && bytes[1] == 0xd8) ? 0 : -1;
}
-static int read_jpeg_file(FILE *fp, uint8_t *header, int len)
+static int read_jpeg_file(FILE * fp, uint8_t * header, int len)
{
- struct jdec_private *jdec = NULL;
- void *jpeg_file = NULL;
- size_t length_of_file;
- unsigned int width, height;
- int rv = -1;
- unsigned char *components[1];
- unsigned int bytes_per_row[1];
-
- rv = floadfile(fp, &jpeg_file, &length_of_file, header, len);
- fclose(fp);
- if (rv)
- goto err;
+ struct jdec_private *jdec = NULL;
+ void *jpeg_file = NULL;
+ size_t length_of_file;
+ unsigned int width, height;
+ int rv = -1;
+ unsigned char *components[1];
+ unsigned int bytes_per_row[1];
+
+ rv = floadfile(fp, &jpeg_file, &length_of_file, header, len);
+ fclose(fp);
+ if (rv)
+ goto err;
- jdec = tinyjpeg_init();
- if (!jdec)
- goto err;
+ jdec = tinyjpeg_init();
+ if (!jdec)
+ goto err;
- if (tinyjpeg_parse_header(jdec, jpeg_file, length_of_file) < 0)
- goto err;
+ if (tinyjpeg_parse_header(jdec, jpeg_file, length_of_file) < 0)
+ goto err;
- tinyjpeg_get_size(jdec, &width, &height);
- if (width > VIDEO_X_SIZE || height > VIDEO_Y_SIZE)
- goto err;
+ tinyjpeg_get_size(jdec, &width, &height);
+ if (width > VIDEO_X_SIZE || height > VIDEO_Y_SIZE)
+ goto err;
- components[0] = (void *)&__vesacon_background[0];
- tinyjpeg_set_components(jdec, components, 1);
- bytes_per_row[0] = VIDEO_X_SIZE << 2;
- tinyjpeg_set_bytes_per_row(jdec, bytes_per_row, 1);
+ components[0] = (void *)&__vesacon_background[0];
+ tinyjpeg_set_components(jdec, components, 1);
+ bytes_per_row[0] = VIDEO_X_SIZE << 2;
+ tinyjpeg_set_bytes_per_row(jdec, bytes_per_row, 1);
- tinyjpeg_decode(jdec, TINYJPEG_FMT_BGRA32);
+ tinyjpeg_decode(jdec, TINYJPEG_FMT_BGRA32);
- rv = 0;
+ rv = 0;
- err:
- /* Don't use tinyjpeg_free() here, since we didn't allow tinyjpeg
- to allocate the frame buffer */
- if (jdec)
- free(jdec);
+err:
+ /* Don't use tinyjpeg_free() here, since we didn't allow tinyjpeg
+ to allocate the frame buffer */
+ if (jdec)
+ free(jdec);
- if (jpeg_file)
- free(jpeg_file);
+ if (jpeg_file)
+ free(jpeg_file);
- return rv;
+ return rv;
}
/* Simple grey Gaussian hole, enough to look interesting */
int vesacon_default_background(void)
{
- int x, y, dx, dy, dy2;
- uint8_t *bgptr = (uint8_t *)&__vesacon_background;
- uint8_t k;
-
- if (__vesacon_pixel_format == PXF_NONE)
- return 0; /* Not in graphics mode */
-
- for (y = 0, dy = -VIDEO_Y_SIZE/2; y < VIDEO_Y_SIZE; y++, dy++) {
- dy2 = dy*dy;
- for (x = 0, dx = -VIDEO_X_SIZE/2; x < VIDEO_X_SIZE; x++, dx++) {
- k = __vesacon_linear_to_srgb[500+((dx*dx+dy2) >> 6)];
- bgptr[0] = k; /* Blue */
- bgptr[1] = k; /* Green */
- bgptr[2] = k; /* Red */
- bgptr += 4; /* Dummy alpha */
+ int x, y, dx, dy, dy2;
+ uint8_t *bgptr = (uint8_t *) & __vesacon_background;
+ uint8_t k;
+
+ if (__vesacon_pixel_format == PXF_NONE)
+ return 0; /* Not in graphics mode */
+
+ for (y = 0, dy = -VIDEO_Y_SIZE / 2; y < VIDEO_Y_SIZE; y++, dy++) {
+ dy2 = dy * dy;
+ for (x = 0, dx = -VIDEO_X_SIZE / 2; x < VIDEO_X_SIZE; x++, dx++) {
+ k = __vesacon_linear_to_srgb[500 + ((dx * dx + dy2) >> 6)];
+ bgptr[0] = k; /* Blue */
+ bgptr[1] = k; /* Green */
+ bgptr[2] = k; /* Red */
+ bgptr += 4; /* Dummy alpha */
+ }
}
- }
- draw_background();
- return 0;
+ draw_background();
+ return 0;
}
/* Set the background to a single flat color */
int vesacon_set_background(unsigned int rgb)
{
- void *bgptr = __vesacon_background;
- unsigned int count = VIDEO_X_SIZE*VIDEO_Y_SIZE;
+ void *bgptr = __vesacon_background;
+ unsigned int count = VIDEO_X_SIZE * VIDEO_Y_SIZE;
- if (__vesacon_pixel_format == PXF_NONE)
- return 0; /* Not in graphics mode */
+ if (__vesacon_pixel_format == PXF_NONE)
+ return 0; /* Not in graphics mode */
- asm volatile("rep; stosl"
- : "+D" (bgptr), "+c" (count)
- : "a" (rgb)
- : "memory");
+ asm volatile ("rep; stosl":"+D" (bgptr), "+c"(count)
+ :"a"(rgb)
+ :"memory");
- draw_background();
- return 0;
+ draw_background();
+ return 0;
}
struct lss16_header {
- uint32_t magic;
- uint16_t xsize;
- uint16_t ysize;
+ uint32_t magic;
+ uint16_t xsize;
+ uint16_t ysize;
};
#define LSS16_MAGIC 0x1413f33d
static inline int lss16_sig_cmp(const void *header, int len)
{
- const struct lss16_header *h = header;
+ const struct lss16_header *h = header;
- if (len != 8)
- return 1;
+ if (len != 8)
+ return 1;
- return !(h->magic == LSS16_MAGIC &&
- h->xsize <= VIDEO_X_SIZE && h->ysize <= VIDEO_Y_SIZE);
+ return !(h->magic == LSS16_MAGIC &&
+ h->xsize <= VIDEO_X_SIZE && h->ysize <= VIDEO_Y_SIZE);
}
-static int read_lss16_file(FILE *fp, const void *header, int header_len)
+static int read_lss16_file(FILE * fp, const void *header, int header_len)
{
- const struct lss16_header *h = header;
- uint32_t colors[16], color;
- bool has_nybble;
- uint8_t byte;
- int count;
- int nybble, prev;
- enum state {
- st_start,
- st_c0,
- st_c1,
- st_c2,
- } state;
- int i, x, y;
- uint32_t *bgptr = (void *)__vesacon_background;
-
- /* Assume the header, 8 bytes, has already been loaded. */
- if (header_len != 8)
- return -1;
-
- for (i = 0; i < 16; i++) {
- uint8_t rgb[3];
- if (fread(rgb, 1, 3, fp) != 3)
- return -1;
-
- colors[i] = (((rgb[0] & 63)*255/63) << 16) +
- (((rgb[1] & 63)*255/63) << 8) +
- ((rgb[2] & 63)*255/63);
- }
-
- /* By spec, the state machine is per row */
- for (y = 0; y < h->ysize; y++) {
- state = st_start;
- has_nybble = false;
- color = colors[prev = 0]; /* By specification */
- count = 0;
-
- x = 0;
- while (x < h->xsize) {
- if (!has_nybble) {
- if (fread(&byte, 1, 1, fp) != 1)
- return -1;
- nybble = byte & 0xf;
- has_nybble = true;
- } else {
- nybble = byte >> 4;
+ const struct lss16_header *h = header;
+ uint32_t colors[16], color;
+ bool has_nybble;
+ uint8_t byte;
+ int count;
+ int nybble, prev;
+ enum state {
+ st_start,
+ st_c0,
+ st_c1,
+ st_c2,
+ } state;
+ int i, x, y;
+ uint32_t *bgptr = (void *)__vesacon_background;
+
+ /* Assume the header, 8 bytes, has already been loaded. */
+ if (header_len != 8)
+ return -1;
+
+ for (i = 0; i < 16; i++) {
+ uint8_t rgb[3];
+ if (fread(rgb, 1, 3, fp) != 3)
+ return -1;
+
+ colors[i] = (((rgb[0] & 63) * 255 / 63) << 16) +
+ (((rgb[1] & 63) * 255 / 63) << 8) + ((rgb[2] & 63) * 255 / 63);
+ }
+
+ /* By spec, the state machine is per row */
+ for (y = 0; y < h->ysize; y++) {
+ state = st_start;
has_nybble = false;
- }
-
- switch (state) {
- case st_start:
- if (nybble != prev) {
- *bgptr++ = color = colors[prev = nybble];
- x++;
- } else {
- state = st_c0;
+ color = colors[prev = 0]; /* By specification */
+ count = 0;
+
+ x = 0;
+ while (x < h->xsize) {
+ if (!has_nybble) {
+ if (fread(&byte, 1, 1, fp) != 1)
+ return -1;
+ nybble = byte & 0xf;
+ has_nybble = true;
+ } else {
+ nybble = byte >> 4;
+ has_nybble = false;
+ }
+
+ switch (state) {
+ case st_start:
+ if (nybble != prev) {
+ *bgptr++ = color = colors[prev = nybble];
+ x++;
+ } else {
+ state = st_c0;
+ }
+ break;
+
+ case st_c0:
+ if (nybble == 0) {
+ state = st_c1;
+ } else {
+ count = nybble;
+ goto do_run;
+ }
+ break;
+
+ case st_c1:
+ count = nybble + 16;
+ state = st_c2;
+ break;
+
+ case st_c2:
+ count += nybble << 4;
+ goto do_run;
+
+do_run:
+ count = min(count, h->xsize - x);
+ x += count;
+ asm volatile ("rep; stosl":"+D" (bgptr),
+ "+c"(count):"a"(color));
+ state = st_start;
+ break;
+ }
}
- break;
-
- case st_c0:
- if (nybble == 0) {
- state = st_c1;
- } else {
- count = nybble;
- goto do_run;
- }
- break;
-
- case st_c1:
- count = nybble + 16;
- state = st_c2;
- break;
-
- case st_c2:
- count += nybble << 4;
- goto do_run;
-
- do_run:
- count = min(count, h->xsize-x);
- x += count;
- asm volatile("rep; stosl"
- : "+D" (bgptr), "+c" (count) : "a" (color));
- state = st_start;
- break;
- }
- }
- /* Zero-fill rest of row */
- i = VIDEO_X_SIZE-x;
- asm volatile("rep; stosl"
- : "+D" (bgptr), "+c" (i) : "a" (0) : "memory");
- }
+ /* Zero-fill rest of row */
+ i = VIDEO_X_SIZE - x;
+ asm volatile ("rep; stosl":"+D" (bgptr), "+c"(i):"a"(0):"memory");
+ }
- /* Zero-fill rest of screen */
- i = (VIDEO_Y_SIZE-y)*VIDEO_X_SIZE;
- asm volatile("rep; stosl"
- : "+D" (bgptr), "+c" (i) : "a" (0) : "memory");
+ /* Zero-fill rest of screen */
+ i = (VIDEO_Y_SIZE - y) * VIDEO_X_SIZE;
+ asm volatile ("rep; stosl":"+D" (bgptr), "+c"(i):"a"(0):"memory");
- return 0;
+ return 0;
}
int vesacon_load_background(const char *filename)
{
- FILE *fp = NULL;
- uint8_t header[8];
- int rv = 1;
+ FILE *fp = NULL;
+ uint8_t header[8];
+ int rv = 1;
- if (__vesacon_pixel_format == PXF_NONE)
- return 0; /* Not in graphics mode */
+ if (__vesacon_pixel_format == PXF_NONE)
+ return 0; /* Not in graphics mode */
- fp = fopen(filename, "r");
+ fp = fopen(filename, "r");
- if (!fp)
- goto err;
+ if (!fp)
+ goto err;
- if (fread(header, 1, 8, fp) != 8)
- goto err;
+ if (fread(header, 1, 8, fp) != 8)
+ goto err;
- if (!png_sig_cmp(header, 0, 8)) {
- rv = read_png_file(fp);
- } else if (!jpeg_sig_cmp(header, 8)) {
- rv = read_jpeg_file(fp, header, 8);
- } else if (!lss16_sig_cmp(header, 8)) {
- rv = read_lss16_file(fp, header, 8);
- }
+ if (!png_sig_cmp(header, 0, 8)) {
+ rv = read_png_file(fp);
+ } else if (!jpeg_sig_cmp(header, 8)) {
+ rv = read_jpeg_file(fp, header, 8);
+ } else if (!lss16_sig_cmp(header, 8)) {
+ rv = read_lss16_file(fp, header, 8);
+ }
- /* This actually displays the stuff */
- draw_background();
+ /* This actually displays the stuff */
+ draw_background();
- err:
- if (fp)
- fclose(fp);
+err:
+ if (fp)
+ fclose(fp);
- return rv;
+ return rv;
}
int __vesacon_init_background(void)
{
- /* The BSS clearing has already cleared __vesacon_background */
+ /* The BSS clearing has already cleared __vesacon_background */
- /* The VESA BIOS has already cleared the screen */
- return 0;
+ /* The VESA BIOS has already cleared the screen */
+ return 0;
}
projects / platform / upstream / syslinux.git / commitdiff