Mercurial > SDL_sound_CoreAudio
diff playsound/playsound.c @ 146:023c3e7f028b
Cleaned up the overflow buffer hack.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Tue, 23 Oct 2001 18:27:31 +0000 |
parents | 195c96fa355a |
children | d51546293fd1 |
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--- a/playsound/playsound.c Wed Oct 17 06:57:07 2001 +0000 +++ b/playsound/playsound.c Tue Oct 23 18:27:31 2001 +0000 @@ -87,57 +87,42 @@ static volatile int done_flag = 0; +static Uint8 *decoded_ptr = NULL; +static Uint32 decoded_bytes = 0; + static void audio_callback(void *userdata, Uint8 *stream, int len) { - static Uint8 overflow[16384]; /* this is a hack. */ - static Uint8 *overflow_ptr; - static int overflowBytes = 0; Sound_Sample *sample = (Sound_Sample *) userdata; int bw = 0; /* bytes written to stream*/ - Uint32 rc; /* return code */ + int cpysize; - if (overflowBytes > 0) - { - bw = (overflowBytes < len) ? overflowBytes : len; - memcpy(stream, overflow_ptr, bw); - overflow_ptr += bw; - overflowBytes -= bw; - } /* if */ - - while ((bw < len) && (!done_flag)) + while (bw < len) { - rc = Sound_Decode(sample); - if (rc > 0) + if (!decoded_bytes) { - if ((bw + (int) rc) > len) + if (sample->flags & (SOUND_SAMPLEFLAG_ERROR|SOUND_SAMPLEFLAG_EOF)) { - overflowBytes = (bw + rc) - len; - memcpy(overflow, - ((Uint8 *) sample->buffer) + (rc - overflowBytes), - overflowBytes); - overflow_ptr = overflow; - rc -= overflowBytes; + memset(stream + bw, '\0', len - bw); + done_flag = 1; + return; } /* if */ - memcpy(stream + bw, sample->buffer, rc); - bw += rc; + decoded_bytes = Sound_Decode(sample); + decoded_ptr = sample->buffer; } /* if */ - if (sample->flags & SOUND_SAMPLEFLAG_EOF) - done_flag = 1; + cpysize = len - bw; + if (cpysize > decoded_bytes) + cpysize = decoded_bytes; - else if (sample->flags & SOUND_SAMPLEFLAG_ERROR) + if (cpysize > 0) { - fprintf(stderr, "Error condition in decoding!\n" - " problem: [%s].\n", Sound_GetError()); - done_flag = 1; - } /* else if */ + memcpy(stream + bw, decoded_ptr, cpysize); + bw += cpysize; + decoded_ptr += bw; + decoded_bytes -= bw; + } /* if */ } /* while */ - - assert(bw <= len); - - if (bw < len) - memset(stream + bw, '\0', len - bw); } /* audio_callback */ @@ -362,10 +347,18 @@ done_flag = 0; SDL_PauseAudio(0); while (!done_flag) + { SDL_Delay(10); + } /* while */ SDL_PauseAudio(1); + + if (sample->flags & SOUND_SAMPLEFLAG_ERROR) + { + fprintf(stderr, "Error in decoding sound file!\n" + " reason: [%s].\n", Sound_GetError()); + } /* if */ + SDL_CloseAudio(); /* reopen with next sample's format if possible */ - Sound_FreeSample(sample); } /* for */