diff options
Diffstat (limited to 'src/i_sound.c')
| -rw-r--r-- | src/i_sound.c | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/src/i_sound.c b/src/i_sound.c index 0c93f540..76c456b8 100644 --- a/src/i_sound.c +++ b/src/i_sound.c @@ -1,7 +1,7 @@ // Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // -// $Id: i_sound.c 196 2005-10-15 16:58:31Z fraggle $ +// $Id: i_sound.c 221 2005-10-23 18:39:45Z fraggle $ // // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 2005 Simon Howard @@ -22,6 +22,15 @@ // 02111-1307, USA. // // $Log$ +// Revision 1.22 2005/10/23 18:39:45 fraggle +// Reproduce the behavior when playing a sound at a sample rate which +// is not 11025 or 22050Hz. This is to "fix" a bug in Scientist 2: +// however, it does not fix the playing of sounds, only silence +// them. I tested Vanilla Doom and this is how it behaves when it +// receives sound effects with odd sample rates. The bug here is +// actually in the Scientist 2 WAD, which has sound effects that +// have the wrong sample rate. +// // Revision 1.21 2005/10/15 16:58:31 fraggle // Fix MIDI music not pausing when using SDL_mixer's native MIDI playback. // The SDL_mixer native MIDI code does not pause music properly - use @@ -101,7 +110,7 @@ //----------------------------------------------------------------------------- static const char -rcsid[] = "$Id: i_sound.c 196 2005-10-15 16:58:31Z fraggle $"; +rcsid[] = "$Id: i_sound.c 221 2005-10-23 18:39:45Z fraggle $"; #include <stdio.h> #include <stdlib.h> @@ -197,15 +206,12 @@ static void ExpandSoundData(byte *data, int samplerate, int length, expanded[i * 4 + 1] = expanded[i * 4 + 3] = (sample >> 8) & 0xff; } } - else - { - I_Error("Unsupported sample rate %i", samplerate); - } } // Load and convert a sound effect +// Returns true if successful -static void CacheSFX(int sound) +static boolean CacheSFX(int sound) { int lumpnum; int samplerate; @@ -220,6 +226,17 @@ static void CacheSFX(int sound) samplerate = (data[3] << 8) | data[2]; length = (data[5] << 8) | data[4]; + + if (samplerate != 11025 && samplerate != 22050) + { + // Sounds with unsupported sound rates are not played + // in Vanilla Doom. As far as I know there are no other + // supported sound sample rates apart from these two, but + // it is possible there are others. + + return false; + } + expanded_length = (length * 4) * (22050 / samplerate); sound_chunks[sound].allocated = 1; @@ -233,13 +250,16 @@ static void CacheSFX(int sound) // don't need the original lump any more Z_ChangeTag(data, PU_CACHE); + + return true; } static Mix_Chunk *getsfx(int sound) { if (sound_chunks[sound].abuf == NULL) { - CacheSFX(sound); + if (!CacheSFX(sound)) + return NULL; } else { @@ -321,6 +341,11 @@ I_StartSound chunk = getsfx(id); + if (chunk == NULL) + { + return -1; + } + // play sound Mix_PlayChannelTimed(channel, chunk, 0, -1); @@ -353,6 +378,9 @@ int I_SoundIsPlaying(int handle) if (!sound_initialised) return false; + if (handle < 0) + return false; + return Mix_Playing(handle); } |