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 61 #if SDL_BYTEORDER == SDL_BIG_ENDIAN 62 int alphaChannelOffset = 0;
64 int alphaChannelOffset = 3;
78 alpha = ((
Uint8*)surface->
pixels) + alphaChannelOffset;
161 }
else if (biSize >= 40) {
222 if (biSize > headerSize) {
228 biHeight = -biHeight;
240 switch (biBitCount) {
243 ExpandBMP = biBitCount;
252 switch (biCompression) {
258 switch (biBitCount) {
266 #if SDL_BYTEORDER == SDL_BIG_ENDIAN 302 if (surface ==
NULL) {
308 palette = (surface->
format)->palette;
311 if (biClrUsed == 0) {
312 biClrUsed = 1 << biBitCount;
314 if ((
int) biClrUsed > palette->
ncolors) {
316 int ncolors = biClrUsed;
320 sizeof(*palette->
colors));
328 }
else if ((
int) biClrUsed < palette->ncolors) {
332 for (i = 0; i < (int) biClrUsed; ++
i) {
339 for (i = 0; i < (int) biClrUsed; ++
i) {
364 bmpPitch = (biWidth + 7) >> 3;
365 pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
368 bmpPitch = (biWidth + 1) >> 1;
369 pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
372 pad = ((surface->
pitch % 4) ? (4 - (surface->
pitch % 4)) : 0);
378 bits = end - surface->
pitch;
380 while (bits >= top && bits < end) {
385 int shift = (8 - ExpandBMP);
386 for (i = 0; i < surface->
w; ++
i) {
387 if (i % (8 / ExpandBMP) == 0) {
394 *(bits +
i) = (pixel >> shift);
407 #if SDL_BYTEORDER == SDL_BIG_ENDIAN 410 switch (biBitCount) {
414 for (i = 0; i < surface->
w; i++)
421 for (i = 0; i < surface->
w; i++)
432 for (i = 0; i < pad; ++
i) {
437 bits += surface->
pitch;
439 bits -= surface->
pitch;
453 if (freesrc && src) {
470 char magic[2] = {
'B',
'M' };
495 Sint32 bV4Endpoints[3 * 3] = {0};
503 #ifdef SAVE_32BIT_BMP 576 biWidth = surface->
w;
577 biHeight = surface->
h;
581 biSizeImage = surface->
h * surface->
pitch;
592 if (save32bit && !saveLegacyBMP) {
596 bV4RedMask = 0x00ff0000;
597 bV4GreenMask = 0x0000ff00;
598 bV4BlueMask = 0x000000ff;
599 bV4AlphaMask = 0xff000000;
620 if (save32bit && !saveLegacyBMP) {
626 for (i = 0; i < 3 * 3; i++) {
641 for (i = 0; i < ncolors; ++
i) {
661 pad = ((bw % 4) ? (4 - (bw % 4)) : 0);
663 bits -= surface->
pitch;
669 const Uint8 padbyte = 0;
670 for (i = 0; i < pad; ++
i) {
688 if (surface != saveme) {
693 if (freedst && dst) {
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
#define SDL_UnlockSurface
GLdouble GLdouble GLdouble r
#define SDL_COPY_COLORKEY
#define LCS_WINDOWS_COLOR_SPACE
#define SDL_RWwrite(ctx, ptr, size, n)
#define SDL_ConvertSurface
A collection of pixels used in software blitting.
#define SDL_RWread(ctx, ptr, size, n)
GLenum GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const void * bits
uint32_t Uint32
An unsigned 32-bit integer type.
static void CorrectAlphaChannel(SDL_Surface *surface)
GLdouble GLdouble GLdouble GLdouble top
GLfloat GLfloat GLfloat alpha
#define SDL_GetHintBoolean
#define SDL_RWseek(ctx, offset, whence)
SDL_FORCE_INLINE Uint32 SDL_Swap32(Uint32 x)
uint8_t Uint8
An unsigned 8-bit integer type.
#define SDL_HINT_BMP_SAVE_LEGACY_FORMAT
Prevent SDL from using version 4 of the bitmap header when saving BMPs.
SDL_FORCE_INLINE Uint16 SDL_Swap16(Uint16 x)
int32_t Sint32
A signed 32-bit integer type.
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 local 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
int SDL_InitFormat(SDL_PixelFormat *format, Uint32 pixel_format)
int SDL_SaveBMP_RW(SDL_Surface *saveme, SDL_RWops *dst, int freedst)
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)
#define SDL_assert(condition)
#define SDL_OutOfMemory()
SDL_Surface * SDL_LoadBMP_RW(SDL_RWops *src, int freesrc)
#define SDL_CreateRGBSurface
uint16_t Uint16
An unsigned 16-bit integer type.
int64_t Sint64
A signed 64-bit integer type.
GLboolean GLboolean GLboolean GLboolean a
GLboolean GLboolean GLboolean b