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comparison src/audio/SDL_mixer.c @ 1985:8055185ae4ed

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Added source color and alpha modulation support. Added perl script to generate optimized render copy functions.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 28 Aug 2006 03:17:39 +0000
parents 3b4ce57c6215
children 0615fa58c0be
comparison
equal deleted inserted replaced
1984:b910bcabec26 1985:8055185ae4ed
261 { 261 {
262 const Uint32 *src32 = (Uint32 *) src; 262 const Uint32 *src32 = (Uint32 *) src;
263 Uint32 *dst32 = (Uint32 *) dst; 263 Uint32 *dst32 = (Uint32 *) dst;
264 Sint32 src1, src2; 264 Sint32 src1, src2;
265 Sint64 dst_sample; 265 Sint64 dst_sample;
266 const Sint64 max_audioval = ((((Sint64)1) << (32 - 1)) - 1); 266 const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1);
267 const Sint64 min_audioval = -(((Sint64)1) << (32 - 1)); 267 const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1));
268 268
269 len /= 4; 269 len /= 4;
270 while (len--) { 270 while (len--) {
271 src1 = (Sint32) SDL_SwapLE32(*src32); 271 src1 = (Sint32) SDL_SwapLE32(*src32);
272 src32++; 272 src32++;
287 { 287 {
288 const Uint32 *src32 = (Uint32 *) src; 288 const Uint32 *src32 = (Uint32 *) src;
289 Uint32 *dst32 = (Uint32 *) dst; 289 Uint32 *dst32 = (Uint32 *) dst;
290 Sint32 src1, src2; 290 Sint32 src1, src2;
291 Sint64 dst_sample; 291 Sint64 dst_sample;
292 const Sint64 max_audioval = ((((Sint64)1) << (32 - 1)) - 1); 292 const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1);
293 const Sint64 min_audioval = -(((Sint64)1) << (32 - 1)); 293 const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1));
294 294
295 len /= 4; 295 len /= 4;
296 while (len--) { 296 while (len--) {
297 src1 = (Sint32) SDL_SwapBE32(*src32); 297 src1 = (Sint32) SDL_SwapBE32(*src32);
298 src32++; 298 src32++;
320 /* !!! FIXME: are these right? */ 320 /* !!! FIXME: are these right? */
321 const double max_audioval = 3.40282347e+38F; 321 const double max_audioval = 3.40282347e+38F;
322 const double min_audioval = -3.40282347e+38F; 322 const double min_audioval = -3.40282347e+38F;
323 323
324 /* !!! FIXME: this is a little nasty. */ 324 /* !!! FIXME: this is a little nasty. */
325 union { float f; Uint32 ui32; } cvt; 325 union
326 {
327 float f;
328 Uint32 ui32;
329 } cvt;
326 330
327 len /= 4; 331 len /= 4;
328 while (len--) { 332 while (len--) {
329 cvt.f = *(src32++); 333 cvt.f = *(src32++);
330 cvt.ui32 = SDL_SwapLE32(cvt.ui32); 334 cvt.ui32 = SDL_SwapLE32(cvt.ui32);
358 /* !!! FIXME: are these right? */ 362 /* !!! FIXME: are these right? */
359 const double max_audioval = 3.40282347e+38F; 363 const double max_audioval = 3.40282347e+38F;
360 const double min_audioval = -3.40282347e+38F; 364 const double min_audioval = -3.40282347e+38F;
361 365
362 /* !!! FIXME: this is a little nasty. */ 366 /* !!! FIXME: this is a little nasty. */
363 union { float f; Uint32 ui32; } cvt; 367 union
368 {
369 float f;
370 Uint32 ui32;
371 } cvt;
364 372
365 len /= 4; 373 len /= 4;
366 while (len--) { 374 while (len--) {
367 cvt.f = *(src32++); 375 cvt.f = *(src32++);
368 cvt.ui32 = SDL_SwapBE32(cvt.ui32); 376 cvt.ui32 = SDL_SwapBE32(cvt.ui32);