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image.c
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/*
pygame-ce - Python Game Library
Copyright (C) 2000-2001 Pete Shinners
Copyright (C) 2006 Rene Dudfield
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Pete Shinners
pete@shinners.org
*/
/*
* image module for pygame
*/
#include "pygame.h"
#include "pgcompat.h"
#include "doc/image_doc.h"
#if PG_COMPILE_SSE4_2
#include <emmintrin.h>
/* SSSE 3 */
#include <tmmintrin.h>
#endif
static int
SaveTGA(SDL_Surface *surface, const char *file, int rle);
static int
SaveTGA_RW(SDL_Surface *surface, SDL_RWops *out, int rle);
#define DATAROW(data, row, width, height, flipped) \
((flipped) ? (((char *)data) + (height - row - 1) * width) \
: (((char *)data) + row * width))
static PyObject *extloadobj = NULL;
static PyObject *extsaveobj = NULL;
static PyObject *extverobj = NULL;
static PyObject *ext_load_sized_svg = NULL;
static inline void
pad(char **data, int padding)
{
if (padding) {
memset(*data, 0, padding);
*data += padding;
}
}
static const char *
find_extension(const char *fullname)
{
const char *dot;
if (fullname == NULL) {
return NULL;
}
dot = strrchr(fullname, '.');
if (dot == NULL) {
return fullname;
}
return dot + 1;
}
static PyObject *
image_load_basic(PyObject *self, PyObject *obj)
{
PyObject *final;
SDL_Surface *surf;
SDL_RWops *rw = pgRWops_FromObject(obj, NULL);
if (rw == NULL) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS;
surf = SDL_LoadBMP_RW(rw, 1);
Py_END_ALLOW_THREADS;
if (surf == NULL) {
return RAISE(pgExc_SDLError, SDL_GetError());
}
final = (PyObject *)pgSurface_New(surf);
if (final == NULL) {
SDL_FreeSurface(surf);
}
return final;
}
static PyObject *
image_load_extended(PyObject *self, PyObject *arg, PyObject *kwarg)
{
if (extloadobj == NULL)
return RAISE(PyExc_NotImplementedError,
"loading images of extended format is not available");
else
return PyObject_Call(extloadobj, arg, kwarg);
}
static PyObject *
image_load(PyObject *self, PyObject *arg, PyObject *kwarg)
{
PyObject *obj;
const char *name = NULL;
static char *kwds[] = {"file", "namehint", NULL};
if (extloadobj == NULL) {
if (!PyArg_ParseTupleAndKeywords(arg, kwarg, "O|s", kwds, &obj,
&name)) {
return NULL;
}
return image_load_basic(self, obj);
}
else
return image_load_extended(self, arg, kwarg);
}
#ifdef WIN32
#define strcasecmp _stricmp
#else
#include <strings.h>
#endif
static PyObject *
image_save_extended(PyObject *self, PyObject *arg, PyObject *kwarg)
{
if (extsaveobj == NULL)
return RAISE(PyExc_NotImplementedError,
"saving images of extended format is not available");
else
return PyObject_Call(extsaveobj, arg, kwarg);
}
static PyObject *
image_save(PyObject *self, PyObject *arg, PyObject *kwarg)
{
pgSurfaceObject *surfobj;
PyObject *obj;
const char *namehint = NULL;
PyObject *oencoded;
PyObject *ret;
SDL_Surface *surf;
int result = 1;
static char *kwds[] = {"surface", "file", "namehint", NULL};
if (!PyArg_ParseTupleAndKeywords(arg, kwarg, "O!O|s", kwds,
&pgSurface_Type, &surfobj, &obj,
&namehint)) {
return NULL;
}
surf = pgSurface_AsSurface(surfobj);
pgSurface_Prep(surfobj);
oencoded = pg_EncodeString(obj, "UTF-8", NULL, pgExc_SDLError);
if (oencoded == NULL) {
result = -2;
}
else {
const char *name = NULL;
const char *ext = NULL;
if (oencoded == Py_None) {
name = (namehint ? namehint : "tga");
}
else {
name = PyBytes_AS_STRING(oencoded);
}
ext = find_extension(name);
if (!strcasecmp(ext, "png") || !strcasecmp(ext, "jpg") ||
!strcasecmp(ext, "jpeg")) {
/* If it is .png .jpg .jpeg use the extended module. */
/* try to get extended formats */
ret = image_save_extended(self, arg, kwarg);
result = (ret == NULL ? -2 : 0);
}
else if (oencoded == Py_None) {
SDL_RWops *rw = pgRWops_FromFileObject(obj);
if (rw != NULL) {
if (!strcasecmp(ext, "bmp")) {
/* The SDL documentation didn't specify which negative
* number is returned upon error. We want to be sure that
* result is either 0 or -1: */
result = (SDL_SaveBMP_RW(surf, rw, 0) == 0 ? 0 : -1);
}
else {
result = SaveTGA_RW(surf, rw, 1);
}
}
else {
result = -2;
}
}
else {
if (!strcasecmp(ext, "bmp")) {
Py_BEGIN_ALLOW_THREADS;
/* The SDL documentation didn't specify which negative number
* is returned upon error. We want to be sure that result is
* either 0 or -1: */
result = (SDL_SaveBMP(surf, name) == 0 ? 0 : -1);
Py_END_ALLOW_THREADS;
}
else {
Py_BEGIN_ALLOW_THREADS;
result = SaveTGA(surf, name, 1);
Py_END_ALLOW_THREADS;
}
}
}
Py_XDECREF(oencoded);
pgSurface_Unprep(surfobj);
if (result == -2) {
/* Python error raised elsewhere */
return NULL;
}
if (result == -1) {
/* SDL error: translate to Python error */
return RAISE(pgExc_SDLError, SDL_GetError());
}
if (result == 1) {
/* Should never get here */
return RAISE(pgExc_SDLError, "Unrecognized image type");
}
Py_RETURN_NONE;
}
static PyObject *
image_get_extended(PyObject *self, PyObject *_null)
{
if (extverobj == NULL)
Py_RETURN_FALSE;
else
Py_RETURN_TRUE;
}
static PyObject *
image_get_sdl_image_version(PyObject *self, PyObject *args, PyObject *kwargs)
{
if (extverobj == NULL)
Py_RETURN_NONE;
else
return PyObject_Call(extverobj, args, kwargs);
}
#if PG_COMPILE_SSE4_2
#define SSE42_ALIGN_NEEDED 16
#define SSE42_ALIGN __attribute__((aligned(SSE42_ALIGN_NEEDED)))
#define _SHIFT_N_STEP2ALIGN(shift, step) (shift / 8 + step * 4)
#if PYGAME_DEBUG_SSE
/* Useful for debugging/comparing the SSE vectors */
static void
_debug_print128_num(__m128i var, const char *msg)
{
uint32_t val[4];
memcpy(val, &var, sizeof(val));
fprintf(stderr, "%s: %04x%04x%04x%04x\n", msg, val[0], val[1], val[2],
val[3]);
}
#define DEBUG_PRINT128_NUM(var, msg) _debug_print128_num(var, msg)
#else
#define DEBUG_PRINT128_NUM(var, msg) \
do { /* do nothing */ \
} while (0)
#endif
/*
* Generates an SSE vector useful for reordering a SSE vector
* based on the "in-memory layout" to match the "tobytes layout"
* It is only useful as second parameter to _mm_shuffle_epi8.
*
* A short _mm_shuffle_epi8 primer:
*
* - If the highest bit of a byte in the reorder vector is set,
* the matching byte in the original vector is cleared:
* - Otherwise, the 3 lowest bit of the byte in the reorder vector
* represent the byte index of where to find the relevant value
* from the original vector.
*
* As an example, given the following in memory layout (bytes):
*
* R1 G1 B1 A1 R2 G2 B2 A2 ...
*
* And we want:
*
* A1 R1 G1 B1 A2 R2 G2 B2
*
* Then the reorder vector should look like (in hex):
*
* 03 00 01 02 07 04 05 06
*
* This is exactly the type of vector that compute_align_vector
* produces (based on the pixel format and where the alpha should
* be placed in the output).
*/
static PG_INLINE __m128i
compute_align_vector(SDL_PixelFormat *format, int color_offset,
int alpha_offset)
{
int output_align[4];
size_t i;
size_t limit = sizeof(output_align) / sizeof(int);
int a_shift = alpha_offset * 8;
int r_shift = (color_offset + 0) * 8;
int g_shift = (color_offset + 1) * 8;
int b_shift = (color_offset + 2) * 8;
for (i = 0; i < limit; i++) {
int p = 3 - i;
output_align[i] = _SHIFT_N_STEP2ALIGN(format->Rshift, p) << r_shift |
_SHIFT_N_STEP2ALIGN(format->Gshift, p) << g_shift |
_SHIFT_N_STEP2ALIGN(format->Bshift, p) << b_shift |
_SHIFT_N_STEP2ALIGN(format->Ashift, p) << a_shift;
}
return _mm_set_epi32(output_align[0], output_align[1], output_align[2],
output_align[3]);
}
static PG_INLINE PG_FUNCTION_TARGET_SSE4_2 void
tobytes_pixels_32bit_sse4(const __m128i *row, __m128i *data, int loop_max,
__m128i mask_vector, __m128i align_vector)
{
int w;
for (w = 0; w < loop_max; ++w) {
__m128i pvector = _mm_loadu_si128(row + w);
DEBUG_PRINT128_NUM(pvector, "Load");
pvector = _mm_and_si128(pvector, mask_vector);
DEBUG_PRINT128_NUM(pvector, "after _mm_and_si128 (and)");
pvector = _mm_shuffle_epi8(pvector, align_vector);
DEBUG_PRINT128_NUM(pvector, "after _mm_shuffle_epi8 (reorder)");
_mm_storeu_si128(data + w, pvector);
}
}
/*
* SSE4.2 variant of tobytes_surf_32bpp.
*
* It is a lot faster but only works on a subset of the surfaces
* (plus requires SSE4.2 support from the CPU).
*/
static PG_FUNCTION_TARGET_SSE4_2 void
tobytes_surf_32bpp_sse42(SDL_Surface *surf, int flipped, char *data,
int color_offset, int alpha_offset)
{
const int step_size = 4;
int h;
SDL_PixelFormat *format = surf->format;
int loop_max = surf->w / step_size;
int mask = (format->Rloss ? 0 : format->Rmask) |
(format->Gloss ? 0 : format->Gmask) |
(format->Bloss ? 0 : format->Bmask) |
(format->Aloss ? 0 : format->Amask);
__m128i mask_vector = _mm_set_epi32(mask, mask, mask, mask);
__m128i align_vector =
compute_align_vector(surf->format, color_offset, alpha_offset);
/* How much we would overshoot if we overstep loop_max */
int rollback_count = surf->w % step_size;
if (rollback_count) {
rollback_count = step_size - rollback_count;
}
DEBUG_PRINT128_NUM(mask_vector, "mask-vector");
DEBUG_PRINT128_NUM(align_vector, "align-vector");
/* This code will be horribly wrong if these assumptions do not hold.
* They are intended as a debug/testing guard to ensure that nothing
* calls this function without ensuring the assumptions during
* development
*/
assert(sizeof(int) == sizeof(Uint32));
assert(4 * sizeof(Uint32) == sizeof(__m128i));
/* If this assertion does not hold, the fallback code will overrun
* the buffers.
*/
assert(surf->w >= step_size);
assert(format->Rloss % 8 == 0);
assert(format->Gloss % 8 == 0);
assert(format->Bloss % 8 == 0);
assert(format->Aloss % 8 == 0);
for (h = 0; h < surf->h; ++h) {
const char *row =
(char *)DATAROW(surf->pixels, h, surf->pitch, surf->h, flipped);
tobytes_pixels_32bit_sse4((const __m128i *)row, (__m128i *)data,
loop_max, mask_vector, align_vector);
row += sizeof(__m128i) * loop_max;
data += sizeof(__m128i) * loop_max;
if (rollback_count) {
/* Back up a bit to ensure we stay within the memory boundaries
* Technically, we end up redoing part of the computations, but
* it does not really matter as the runtime of these operations
* are fixed and the results are deterministic.
*/
row -= rollback_count * sizeof(Uint32);
data -= rollback_count * sizeof(Uint32);
tobytes_pixels_32bit_sse4((const __m128i *)row, (__m128i *)data, 1,
mask_vector, align_vector);
row += sizeof(__m128i);
data += sizeof(__m128i);
}
}
}
#endif /* PG_COMPILE_SSE4_2 */
static void
tobytes_surf_32bpp(SDL_Surface *surf, int flipped, int hascolorkey,
Uint32 colorkey, char *serialized_image, int color_offset,
int alpha_offset, int padding)
{
int w, h;
Uint32 Rmask = surf->format->Rmask;
Uint32 Gmask = surf->format->Gmask;
Uint32 Bmask = surf->format->Bmask;
Uint32 Amask = surf->format->Amask;
Uint32 Rshift = surf->format->Rshift;
Uint32 Gshift = surf->format->Gshift;
Uint32 Bshift = surf->format->Bshift;
Uint32 Ashift = surf->format->Ashift;
Uint32 Rloss = surf->format->Rloss;
Uint32 Gloss = surf->format->Gloss;
Uint32 Bloss = surf->format->Bloss;
Uint32 Aloss = surf->format->Aloss;
#if PG_COMPILE_SSE4_2
if (/* SDL uses Uint32, SSE uses int for building vectors.
* Related, we assume that Uint32 is packed so 4 of
* them perfectly matches an __m128i.
* If these assumptions do not match up, we will
* produce incorrect results.
*/
sizeof(int) == sizeof(Uint32) &&
4 * sizeof(Uint32) == sizeof(__m128i) &&
!hascolorkey /* No color key */
&& !padding &&
SDL_HasSSE42() == SDL_TRUE
/* The SSE code assumes it will always read at least 4 pixels */
&& surf->w >= 4
/* Our SSE code assumes masks are at most 0xff */
&& (surf->format->Rmask >> surf->format->Rshift) <= 0x0ff &&
(surf->format->Gmask >> surf->format->Gshift) <= 0x0ff &&
(surf->format->Bmask >> surf->format->Bshift) <= 0x0ff &&
(Amask >> Ashift) <= 0x0ff
/* Our SSE code cannot handle losses other than 0 or 8
* Note the mask check above ensures that losses can be
* at most be 8 (assuming the pixel format makes sense
* at all).
*/
&& (surf->format->Rloss % 8) == 0 && (surf->format->Bloss % 8) == 0 &&
(surf->format->Gloss % 8) == 0 && (Aloss % 8) == 0) {
tobytes_surf_32bpp_sse42(surf, flipped, serialized_image, color_offset,
alpha_offset);
return;
}
#endif /* PG_COMPILE_SSE4_2 */
for (h = 0; h < surf->h; ++h) {
Uint32 *pixel_row =
(Uint32 *)DATAROW(surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
Uint32 color = *pixel_row++;
serialized_image[color_offset + 0] =
(char)(((color & Rmask) >> Rshift) << Rloss);
serialized_image[color_offset + 1] =
(char)(((color & Gmask) >> Gshift) << Gloss);
serialized_image[color_offset + 2] =
(char)(((color & Bmask) >> Bshift) << Bloss);
serialized_image[alpha_offset] =
hascolorkey
? (char)(color != colorkey) * 255
: (char)(Amask ? (((color & Amask) >> Ashift) << Aloss)
: 255);
serialized_image += 4;
}
pad(&serialized_image, padding);
}
}
#define PREMUL_PIXEL_ALPHA(pixel, alpha) (char)((((pixel) + 1) * (alpha)) >> 8)
PyObject *
image_tobytes(PyObject *self, PyObject *arg, PyObject *kwarg)
{
pgSurfaceObject *surfobj;
PyObject *bytes = NULL;
char *format, *data;
SDL_Surface *surf;
int w, h, flipped = 0, pitch = -1;
int byte_width, padding;
Py_ssize_t len;
Uint32 Rmask, Gmask, Bmask, Amask, Rshift, Gshift, Bshift, Ashift, Rloss,
Gloss, Bloss, Aloss;
int hascolorkey = 0;
Uint32 color, colorkey;
Uint32 alpha;
static char *kwds[] = {"surface", "format", "flipped", "pitch", NULL};
#ifdef _MSC_VER
/* MSVC static analyzer false alarm: assure format is NULL-terminated by
* making analyzer assume it was initialised */
__analysis_assume(format = "inited");
#endif
if (!PyArg_ParseTupleAndKeywords(arg, kwarg, "O!s|ii", kwds,
&pgSurface_Type, &surfobj, &format,
&flipped, &pitch))
return NULL;
surf = pgSurface_AsSurface(surfobj);
Rmask = surf->format->Rmask;
Gmask = surf->format->Gmask;
Bmask = surf->format->Bmask;
Amask = surf->format->Amask;
Rshift = surf->format->Rshift;
Gshift = surf->format->Gshift;
Bshift = surf->format->Bshift;
Ashift = surf->format->Ashift;
Rloss = surf->format->Rloss;
Gloss = surf->format->Gloss;
Bloss = surf->format->Bloss;
Aloss = surf->format->Aloss;
if (!strcmp(format, "P")) {
if (PG_SURF_BytesPerPixel(surf) != 1)
return RAISE(
PyExc_ValueError,
"Can only create \"P\" format data with 8bit Surfaces");
byte_width = surf->w;
}
else if (!strcmp(format, "RGB")) {
byte_width = surf->w * 3;
}
else if (!strcmp(format, "RGBA")) {
if ((hascolorkey = SDL_HasColorKey(surf))) {
SDL_GetColorKey(surf, &colorkey);
}
byte_width = surf->w * 4;
}
else if (!strcmp(format, "RGBX") || !strcmp(format, "ARGB") ||
!strcmp(format, "BGRA") || !strcmp(format, "ABGR")) {
byte_width = surf->w * 4;
}
else if (!strcmp(format, "RGBA_PREMULT") ||
!strcmp(format, "ARGB_PREMULT")) {
if (PG_SURF_BytesPerPixel(surf) == 1 || surf->format->Amask == 0)
return RAISE(PyExc_ValueError,
"Can only create pre-multiplied alpha bytes if "
"the surface has per-pixel alpha");
byte_width = surf->w * 4;
}
else {
return RAISE(PyExc_ValueError, "Unrecognized type of format");
}
if (pitch == -1) {
pitch = byte_width;
padding = 0;
}
else if (pitch < byte_width) {
return RAISE(PyExc_ValueError,
"Pitch must be greater than or equal to the width "
"as per the format");
}
else {
padding = pitch - byte_width;
}
bytes = PyBytes_FromStringAndSize(NULL, (Py_ssize_t)pitch * surf->h);
if (!bytes)
return NULL;
PyBytes_AsStringAndSize(bytes, &data, &len);
if (!strcmp(format, "P")) {
pgSurface_Lock(surfobj);
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(data, h, pitch, surf->h, flipped);
memcpy(ptr, (char *)surf->pixels + (h * surf->pitch), surf->w);
if (padding)
memset(ptr + byte_width, 0, padding);
}
pgSurface_Unlock(surfobj);
}
else if (!strcmp(format, "RGB")) {
pgSurface_Lock(surfobj);
switch (PG_SURF_BytesPerPixel(surf)) {
case 1:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[0] = (char)surf->format->palette->colors[color].r;
data[1] = (char)surf->format->palette->colors[color].g;
data[2] = (char)surf->format->palette->colors[color].b;
data += 3;
}
pad(&data, padding);
}
break;
case 2:
for (h = 0; h < surf->h; ++h) {
Uint16 *ptr = (Uint16 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[0] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[2] = (char)(((color & Bmask) >> Bshift) << Bloss);
data += 3;
}
pad(&data, padding);
}
break;
case 3:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
color = ptr[0] + (ptr[1] << 8) + (ptr[2] << 16);
#else
color = ptr[2] + (ptr[1] << 8) + (ptr[0] << 16);
#endif
ptr += 3;
data[0] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[2] = (char)(((color & Bmask) >> Bshift) << Bloss);
data += 3;
}
pad(&data, padding);
}
break;
case 4:
for (h = 0; h < surf->h; ++h) {
Uint32 *ptr = (Uint32 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[0] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Rloss);
data[2] = (char)(((color & Bmask) >> Bshift) << Rloss);
data += 3;
}
pad(&data, padding);
}
break;
}
pgSurface_Unlock(surfobj);
}
else if (!strcmp(format, "RGBX") || !strcmp(format, "RGBA")) {
pgSurface_Lock(surfobj);
switch (PG_SURF_BytesPerPixel(surf)) {
case 1:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[0] = (char)surf->format->palette->colors[color].r;
data[1] = (char)surf->format->palette->colors[color].g;
data[2] = (char)surf->format->palette->colors[color].b;
data[3] = hascolorkey ? (char)(color != colorkey) * 255
: (char)255;
data += 4;
}
pad(&data, padding);
}
break;
case 2:
for (h = 0; h < surf->h; ++h) {
Uint16 *ptr = (Uint16 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[0] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[2] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[3] =
hascolorkey
? (char)(color != colorkey) * 255
: (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 3:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
color = ptr[0] + (ptr[1] << 8) + (ptr[2] << 16);
#else
color = ptr[2] + (ptr[1] << 8) + (ptr[0] << 16);
#endif
ptr += 3;
data[0] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[2] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[3] =
hascolorkey
? (char)(color != colorkey) * 255
: (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 4:
tobytes_surf_32bpp(surf, flipped, hascolorkey, colorkey, data,
0, 3, padding);
break;
}
pgSurface_Unlock(surfobj);
}
else if (!strcmp(format, "ARGB")) {
pgSurface_Lock(surfobj);
switch (PG_SURF_BytesPerPixel(surf)) {
case 1:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[1] = (char)surf->format->palette->colors[color].r;
data[2] = (char)surf->format->palette->colors[color].g;
data[3] = (char)surf->format->palette->colors[color].b;
data[0] = (char)255;
data += 4;
}
pad(&data, padding);
}
break;
case 2:
for (h = 0; h < surf->h; ++h) {
Uint16 *ptr = (Uint16 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[1] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[2] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[3] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[0] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 3:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
color = ptr[0] + (ptr[1] << 8) + (ptr[2] << 16);
#else
color = ptr[2] + (ptr[1] << 8) + (ptr[0] << 16);
#endif
ptr += 3;
data[1] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[2] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[3] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[0] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 4:
tobytes_surf_32bpp(surf, flipped, hascolorkey, colorkey, data,
1, 0, padding);
break;
}
pgSurface_Unlock(surfobj);
}
else if (!strcmp(format, "BGRA")) {
pgSurface_Lock(surfobj);
switch (PG_SURF_BytesPerPixel(surf)) {
case 1:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[2] = (char)surf->format->palette->colors[color].r;
data[1] = (char)surf->format->palette->colors[color].g;
data[0] = (char)surf->format->palette->colors[color].b;
data[3] = (char)255;
data += 4;
}
pad(&data, padding);
}
break;
case 2:
for (h = 0; h < surf->h; ++h) {
Uint16 *ptr = (Uint16 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[2] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[0] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[3] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 3:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
color = ptr[0] + (ptr[1] << 8) + (ptr[2] << 16);
#else
color = ptr[2] + (ptr[1] << 8) + (ptr[0] << 16);
#endif
ptr += 3;
data[2] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[0] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[3] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 4:
for (h = 0; h < surf->h; ++h) {
Uint32 *ptr = (Uint32 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[2] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[1] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[0] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[3] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
}
pgSurface_Unlock(surfobj);
}
else if (!strcmp(format, "ABGR")) {
pgSurface_Lock(surfobj);
switch (PG_SURF_BytesPerPixel(surf)) {
case 1:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[3] = (char)surf->format->palette->colors[color].r;
data[2] = (char)surf->format->palette->colors[color].g;
data[1] = (char)surf->format->palette->colors[color].b;
data[0] = (char)255;
data += 4;
}
pad(&data, padding);
}
break;
case 2:
for (h = 0; h < surf->h; ++h) {
Uint16 *ptr = (Uint16 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[3] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[2] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[1] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[0] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 3:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
color = ptr[0] + (ptr[1] << 8) + (ptr[2] << 16);
#else
color = ptr[2] + (ptr[1] << 8) + (ptr[0] << 16);
#endif
ptr += 3;
data[3] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[2] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[1] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[0] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
case 4:
for (h = 0; h < surf->h; ++h) {
Uint32 *ptr = (Uint32 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
data[3] = (char)(((color & Rmask) >> Rshift) << Rloss);
data[2] = (char)(((color & Gmask) >> Gshift) << Gloss);
data[1] = (char)(((color & Bmask) >> Bshift) << Bloss);
data[0] = (char)(Amask ? (((color & Amask) >> Ashift)
<< Aloss)
: 255);
data += 4;
}
pad(&data, padding);
}
break;
}
pgSurface_Unlock(surfobj);
}
else if (!strcmp(format, "RGBA_PREMULT")) {
pgSurface_Lock(surfobj);
switch (PG_SURF_BytesPerPixel(surf)) {
case 2:
for (h = 0; h < surf->h; ++h) {
Uint16 *ptr = (Uint16 *)DATAROW(
surf->pixels, h, surf->pitch, surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
color = *ptr++;
alpha = ((color & Amask) >> Ashift) << Aloss;
data[0] = PREMUL_PIXEL_ALPHA(
((color & Rmask) >> Rshift) << Rloss, alpha);
data[1] = PREMUL_PIXEL_ALPHA(
((color & Gmask) >> Gshift) << Gloss, alpha);
data[2] = PREMUL_PIXEL_ALPHA(
((color & Bmask) >> Bshift) << Bloss, alpha);
data[3] = (char)alpha;
data += 4;
}
pad(&data, padding);
}
break;
case 3:
for (h = 0; h < surf->h; ++h) {
Uint8 *ptr = (Uint8 *)DATAROW(surf->pixels, h, surf->pitch,
surf->h, flipped);
for (w = 0; w < surf->w; ++w) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
color = ptr[0] + (ptr[1] << 8) + (ptr[2] << 16);
#else
color = ptr[2] + (ptr[1] << 8) + (ptr[0] << 16);
#endif
ptr += 3;
alpha = ((color & Amask) >> Ashift) << Aloss;
data[0] = PREMUL_PIXEL_ALPHA(
((color & Rmask) >> Rshift) << Rloss, alpha);
data[1] = PREMUL_PIXEL_ALPHA(
((color & Gmask) >> Gshift) << Gloss, alpha);
data[2] = PREMUL_PIXEL_ALPHA(
((color & Bmask) >> Bshift) << Bloss, alpha);
data[3] = (char)alpha;