static int SaveTemplate(SDL_DollarTemplate *templ, SDL_RWops *dst) { if (dst == NULL) { return 0; } /* No Longer storing the Hash, rehash on load */ /* if (SDL_RWops.write(dst, &(templ->hash), sizeof(templ->hash), 1) != 1) return 0; */ #if SDL_BYTEORDER == SDL_LIL_ENDIAN if (SDL_RWwrite(dst, templ->path, sizeof(templ->path[0]),DOLLARNPOINTS) != DOLLARNPOINTS) { return 0; } #else { SDL_DollarTemplate copy = *templ; SDL_FloatPoint *p = copy.path; int i; for (i = 0; i < DOLLARNPOINTS; i++, p++) { p->x = SDL_SwapFloatLE(p->x); p->y = SDL_SwapFloatLE(p->y); } if (SDL_RWwrite(dst, copy.path, sizeof(copy.path[0]),DOLLARNPOINTS) != DOLLARNPOINTS) { return 0; } } #endif return 1; }
int SDL_LoadDollarTemplates(SDL_TouchID touchId, SDL_RWops *src) { int i,loaded = 0; SDL_GestureTouch *touch = NULL; if (src == NULL) return 0; if (touchId >= 0) { for (i = 0; i < SDL_numGestureTouches; i++) { if (SDL_gestureTouch[i].id == touchId) { touch = &SDL_gestureTouch[i]; } } if (touch == NULL) { return SDL_SetError("given touch id not found"); } } while (1) { SDL_DollarTemplate templ; if (SDL_RWread(src,templ.path,sizeof(templ.path[0]),DOLLARNPOINTS) < DOLLARNPOINTS) { if (loaded == 0) { return SDL_SetError("could not read any dollar gesture from rwops"); } break; } #if SDL_BYTEORDER != SDL_LIL_ENDIAN for (i = 0; i < DOLLARNPOINTS; i++) { SDL_FloatPoint *p = &templ.path[i]; p->x = SDL_SwapFloatLE(p->x); p->y = SDL_SwapFloatLE(p->y); } #endif if (touchId >= 0) { /* printf("Adding loaded gesture to 1 touch\n"); */ if (SDL_AddDollarGesture(touch, templ.path) >= 0) loaded++; } else { /* printf("Adding to: %i touches\n",SDL_numGestureTouches); */ for (i = 0; i < SDL_numGestureTouches; i++) { touch = &SDL_gestureTouch[i]; /* printf("Adding loaded gesture to + touches\n"); */ /* TODO: What if this fails? */ SDL_AddDollarGesture(touch,templ.path); } loaded++; } } return loaded; }
void SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format, Uint32 len, int volume) { if (volume == 0) { return; } switch (format) { case AUDIO_U8: { #if defined(__GNUC__) && defined(__M68000__) && !defined(__mcoldfire__) && defined(SDL_ASSEMBLY_ROUTINES) SDL_MixAudio_m68k_U8((char *) dst, (char *) src, (unsigned long) len, (long) volume, (char *) mix8); #else Uint8 src_sample; while (len--) { src_sample = *src; ADJUST_VOLUME_U8(src_sample, volume); *dst = mix8[*dst + src_sample]; ++dst; ++src; } #endif } break; case AUDIO_S8: { Sint8 *dst8, *src8; Sint8 src_sample; int dst_sample; const int max_audioval = ((1 << (8 - 1)) - 1); const int min_audioval = -(1 << (8 - 1)); src8 = (Sint8 *) src; dst8 = (Sint8 *) dst; while (len--) { src_sample = *src8; ADJUST_VOLUME(src_sample, volume); dst_sample = *dst8 + src_sample; if (dst_sample > max_audioval) { *dst8 = max_audioval; } else if (dst_sample < min_audioval) { *dst8 = min_audioval; } else { *dst8 = dst_sample; } ++dst8; ++src8; } } break; case AUDIO_S16LSB: { Sint16 src1, src2; int dst_sample; const int max_audioval = ((1 << (16 - 1)) - 1); const int min_audioval = -(1 << (16 - 1)); len /= 2; while (len--) { src1 = ((src[1]) << 8 | src[0]); ADJUST_VOLUME(src1, volume); src2 = ((dst[1]) << 8 | dst[0]); src += 2; dst_sample = src1 + src2; if (dst_sample > max_audioval) { dst_sample = max_audioval; } else if (dst_sample < min_audioval) { dst_sample = min_audioval; } dst[0] = dst_sample & 0xFF; dst_sample >>= 8; dst[1] = dst_sample & 0xFF; dst += 2; } } break; case AUDIO_S16MSB: { #if defined(__GNUC__) && defined(__M68000__) && !defined(__mcoldfire__) && defined(SDL_ASSEMBLY_ROUTINES) SDL_MixAudio_m68k_S16MSB((short *) dst, (short *) src, (unsigned long) len, (long) volume); #else Sint16 src1, src2; int dst_sample; const int max_audioval = ((1 << (16 - 1)) - 1); const int min_audioval = -(1 << (16 - 1)); len /= 2; while (len--) { src1 = ((src[0]) << 8 | src[1]); ADJUST_VOLUME(src1, volume); src2 = ((dst[0]) << 8 | dst[1]); src += 2; dst_sample = src1 + src2; if (dst_sample > max_audioval) { dst_sample = max_audioval; } else if (dst_sample < min_audioval) { dst_sample = min_audioval; } dst[1] = dst_sample & 0xFF; dst_sample >>= 8; dst[0] = dst_sample & 0xFF; dst += 2; } #endif } break; case AUDIO_S32LSB: { const Uint32 *src32 = (Uint32 *) src; Uint32 *dst32 = (Uint32 *) dst; Sint64 src1, src2; Sint64 dst_sample; const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1); const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1)); len /= 4; while (len--) { src1 = (Sint64) ((Sint32) SDL_SwapLE32(*src32)); src32++; ADJUST_VOLUME(src1, volume); src2 = (Sint64) ((Sint32) SDL_SwapLE32(*dst32)); dst_sample = src1 + src2; if (dst_sample > max_audioval) { dst_sample = max_audioval; } else if (dst_sample < min_audioval) { dst_sample = min_audioval; } *(dst32++) = SDL_SwapLE32((Uint32) ((Sint32) dst_sample)); } } break; case AUDIO_S32MSB: { const Uint32 *src32 = (Uint32 *) src; Uint32 *dst32 = (Uint32 *) dst; Sint64 src1, src2; Sint64 dst_sample; const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1); const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1)); len /= 4; while (len--) { src1 = (Sint64) ((Sint32) SDL_SwapBE32(*src32)); src32++; ADJUST_VOLUME(src1, volume); src2 = (Sint64) ((Sint32) SDL_SwapBE32(*dst32)); dst_sample = src1 + src2; if (dst_sample > max_audioval) { dst_sample = max_audioval; } else if (dst_sample < min_audioval) { dst_sample = min_audioval; } *(dst32++) = SDL_SwapBE32((Uint32) ((Sint32) dst_sample)); } } break; case AUDIO_F32LSB: { const float fmaxvolume = 1.0f / ((float) SDL_MIX_MAXVOLUME); const float fvolume = (float) volume; const float *src32 = (float *) src; float *dst32 = (float *) dst; float src1, src2; double dst_sample; /* !!! FIXME: are these right? */ const double max_audioval = 3.402823466e+38F; const double min_audioval = -3.402823466e+38F; len /= 4; while (len--) { src1 = ((SDL_SwapFloatLE(*src32) * fvolume) * fmaxvolume); src2 = SDL_SwapFloatLE(*dst32); src32++; dst_sample = ((double) src1) + ((double) src2); if (dst_sample > max_audioval) { dst_sample = max_audioval; } else if (dst_sample < min_audioval) { dst_sample = min_audioval; } *(dst32++) = SDL_SwapFloatLE((float) dst_sample); } } break; case AUDIO_F32MSB: { const float fmaxvolume = 1.0f / ((float) SDL_MIX_MAXVOLUME); const float fvolume = (float) volume; const float *src32 = (float *) src; float *dst32 = (float *) dst; float src1, src2; double dst_sample; /* !!! FIXME: are these right? */ const double max_audioval = 3.402823466e+38F; const double min_audioval = -3.402823466e+38F; len /= 4; while (len--) { src1 = ((SDL_SwapFloatBE(*src32) * fvolume) * fmaxvolume); src2 = SDL_SwapFloatBE(*dst32); src32++; dst_sample = ((double) src1) + ((double) src2); if (dst_sample > max_audioval) { dst_sample = max_audioval; } else if (dst_sample < min_audioval) { dst_sample = min_audioval; } *(dst32++) = SDL_SwapFloatBE((float) dst_sample); } } break; default: /* If this happens... FIXME! */ SDL_SetError("SDL_MixAudio(): unknown audio format"); return; } }