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21 #include "../SDL_internal.h"
41 #define SAVE_32BIT_BMP
48 #define BI_BITFIELDS 3
52 #ifndef LCS_WINDOWS_COLOR_SPACE
54 #define LCS_WINDOWS_COLOR_SPACE 0x57696E20
71 #define COPY_PIXEL(x) spot = &bits[ofs++]; if(spot >= start && spot < end) *spot = (x)
87 Uint8 pixel0 = pixel >> 4;
88 Uint8 pixel1 = pixel & 0x0F;
114 bits -= (ch * pitch);
125 needsPad = (((ch+1)>>1) & 1);
147 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
148 int alphaChannelOffset = 0;
150 int alphaChannelOffset = 3;
252 }
else if (biSize >= 40) {
305 if (biSize > headerSize) {
309 if (biWidth <= 0 || biHeight == 0) {
310 SDL_SetError(
"BMP file with bad dimensions (%dx%d)", biWidth, biHeight);
316 biHeight = -biHeight;
328 switch (biBitCount) {
331 ExpandBMP = biBitCount;
340 SDL_SetError(
"%d-bpp BMP images are not supported", biBitCount);
349 switch (biCompression) {
355 switch (biBitCount) {
363 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
403 palette = (
surface->format)->palette;
416 biClrUsed = 1 << biBitCount;
419 for (
i = 0;
i < (int) biClrUsed; ++
i) {
426 for (
i = 0;
i < (int) biClrUsed; ++
i) {
457 bmpPitch = (biWidth + 7) >> 3;
458 pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
461 bmpPitch = (biWidth + 1) >> 1;
462 pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
478 int shift = (8 - ExpandBMP);
480 if (
i % (8 / ExpandBMP) == 0) {
487 bits[
i] = (pixel >> shift);
488 if (
bits[
i] >= biClrUsed) {
489 SDL_SetError(
"A BMP image contains a pixel with a color out of the palette");
504 if (biBitCount == 8 && palette && biClrUsed < (1u << biBitCount)) {
506 if (
bits[
i] >= biClrUsed) {
507 SDL_SetError(
"A BMP image contains a pixel with a color out of the palette");
513 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
516 switch (biBitCount) {
538 for (
i = 0;
i < pad; ++
i) {
561 if (freesrc &&
src) {
578 char magic[2] = {
'B',
'M' };
603 Sint32 bV4Endpoints[3 * 3] = {0};
611 #ifdef SAVE_32BIT_BMP
687 biBitCount =
surface->format->BitsPerPixel;
692 if (
surface->format->palette) {
693 biClrUsed =
surface->format->palette->ncolors;
700 if (save32bit && !saveLegacyBMP) {
704 bV4RedMask = 0x00ff0000;
705 bV4GreenMask = 0x0000ff00;
706 bV4BlueMask = 0x000000ff;
707 bV4AlphaMask = 0xff000000;
728 if (save32bit && !saveLegacyBMP) {
734 for (
i = 0;
i < 3 * 3;
i++) {
743 if (
surface->format->palette) {
748 ncolors =
surface->format->palette->ncolors;
749 for (
i = 0;
i < ncolors; ++
i) {
769 pad = ((bw % 4) ? (4 - (bw % 4)) : 0);
777 const Uint8 padbyte = 0;
778 for (
i = 0;
i < pad; ++
i) {
801 if (freedst &&
dst) {
#define SDL_UnlockSurface
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
A collection of pixels used in software blitting.
SDL_Surface * SDL_LoadBMP_RW(SDL_RWops *src, int freesrc)
GLboolean GLboolean GLboolean b
set set set set set set set macro pixldst1 abits if abits op else op endif endm macro pixldst2 abits if abits op else op endif endm macro pixldst4 abits if abits op else op endif endm macro pixldst0 abits op endm macro pixldst3 mem_operand op endm macro pixldst30 mem_operand op endm macro pixldst abits if abits elseif abits elseif abits elseif abits elseif abits pixldst0 abits else pixldst0 abits pixldst0 abits pixldst0 abits pixldst0 abits endif elseif abits else pixldst0 abits pixldst0 abits endif elseif abits else error unsupported bpp *numpix else pixst endif endm macro pixld1_s mem_operand if asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl elseif asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl else error unsupported endif endm macro pixld2_s mem_operand if mov asr add asl add asl mov asr sub UNIT_X add asl mov asr add asl add asl mov asr add UNIT_X add asl else pixld1_s mem_operand pixld1_s mem_operand endif endm macro pixld0_s mem_operand if asr adds SRC_WIDTH_FIXED bpl add asl elseif asr adds SRC_WIDTH_FIXED bpl add asl endif endm macro pixld_s_internal mem_operand if mem_operand pixld2_s mem_operand pixdeinterleave basereg elseif mem_operand elseif mem_operand elseif mem_operand elseif mem_operand pixld0_s mem_operand else pixld0_s mem_operand pixld0_s mem_operand pixld0_s mem_operand pixld0_s mem_operand endif elseif mem_operand else pixld0_s mem_operand pixld0_s mem_operand endif elseif mem_operand else error unsupported mem_operand if bpp mem_operand endif endm macro vuzp8 reg2 vuzp d d ®2 endm macro vzip8 reg2 vzip d d ®2 endm macro pixdeinterleave basereg basereg basereg basereg basereg endif endm macro pixinterleave basereg basereg basereg basereg basereg endif endm macro PF boost_increment endif if endif PF tst PF addne PF subne PF cmp ORIG_W if endif if endif if endif PF subge ORIG_W PF subges if endif if endif if endif endif endm macro cache_preload_simple endif if dst_r_bpp pld[DST_R, #(PREFETCH_DISTANCE_SIMPLE *dst_r_bpp/8)] endif if mask_bpp pld endif[MASK, #(PREFETCH_DISTANCE_SIMPLE *mask_bpp/8)] endif endif endm macro fetch_mask_pixblock pixld mask_basereg pixblock_size MASK endm macro ensure_destination_ptr_alignment process_pixblock_tail_head if beq irp skip1 beq endif SRC MASK if dst_r_bpp DST_R else add endif PF add sub src_basereg pixdeinterleave mask_basereg pixdeinterleave dst_r_basereg process_pixblock_head pixblock_size cache_preload_simple process_pixblock_tail pixinterleave dst_w_basereg irp beq endif process_pixblock_tail_head tst beq irp if pixblock_size chunk_size tst beq pixld_src SRC pixld MASK if DST_R else pixld DST_R endif if
SDL_FORCE_INLINE Uint16 SDL_Swap16(Uint16 x)
int SDL_SaveBMP_RW(SDL_Surface *saveme, SDL_RWops *dst, int freedst)
GLdouble GLdouble GLdouble r
#define SDL_ConvertSurface
GLdouble GLdouble GLdouble GLdouble top
#define SDL_COPY_COLORKEY
GLboolean GLboolean GLboolean GLboolean a
static int readRlePixels(SDL_Surface *surface, SDL_RWops *src, int isRle8)
GLfloat GLfloat GLfloat alpha
#define SDL_GetHintBoolean
GLint GLint GLsizei GLsizei height
SDL_FORCE_INLINE Uint32 SDL_Swap32(Uint32 x)
#define LCS_WINDOWS_COLOR_SPACE
#define SDL_HINT_BMP_SAVE_LEGACY_FORMAT
Prevent SDL from using version 4 of the bitmap header when saving BMPs.
#define SDL_assert(condition)
static void CorrectAlphaChannel(SDL_Surface *surface)
#define SDL_CreateRGBSurface
GLenum GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const void * bits
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
int SDL_InitFormat(SDL_PixelFormat *format, Uint32 pixel_format)