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Fix loop_point and song_length floating point comparisons

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This commit is contained in:
mazmazz 2019-01-01 10:47:16 -05:00
parent b7bb570f97
commit 7916e020d2
1 changed files with 6 additions and 7 deletions
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13
src/sdl/mixer_sound.c
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@ -1049,7 +1049,7 @@ boolean I_LoadSong(char *data, size_t len)
while ((UINT32)(p - data) < len) while ((UINT32)(p - data) < len)
{ {
if (!loop_point && !strncmp(p, key1, key1len)) if (fpclassify(loop_point) == FP_ZERO && !strncmp(p, key1, key1len))
{ {
p += key1len; // skip LOOP p += key1len; // skip LOOP
if (!strncmp(p, key2, key2len)) // is it LOOPPOINT=? if (!strncmp(p, key2, key2len)) // is it LOOPPOINT=?
@ -1068,13 +1068,13 @@ boolean I_LoadSong(char *data, size_t len)
// Everything that uses LOOPMS will work perfectly with SDL_Mixer. // Everything that uses LOOPMS will work perfectly with SDL_Mixer.
} }
} }
else if (!song_length && !strncmp(p, key4, key4len)) // is it LENGTHMS=? else if (fpclassify(song_length) == FP_ZERO && !strncmp(p, key4, key4len)) // is it LENGTHMS=?
{ {
p += key4len; // skip LENGTHMS p += key4len; // skip LENGTHMS
song_length = (float)(atoi(p) / 1000.0L); song_length = (float)(atoi(p) / 1000.0L);
} }
// below: search MP3 or other tags that use wide char encoding // below: search MP3 or other tags that use wide char encoding
else if (!loop_point && !memcmp(p, key1w, key1len*2)) // LOOP wide char else if (fpclassify(loop_point) == FP_ZERO && !memcmp(p, key1w, key1len*2)) // LOOP wide char
{ {
p += key1len*2; p += key1len*2;
if (!memcmp(p, key2w, (key2len+1)*2)) // POINT= wide char if (!memcmp(p, key2w, (key2len+1)*2)) // POINT= wide char
@ -1106,7 +1106,7 @@ boolean I_LoadSong(char *data, size_t len)
loop_point = (float)(atoi(wval) / 1000.0L); loop_point = (float)(atoi(wval) / 1000.0L);
} }
} }
else if (!song_length && !memcmp(p, key4w, (key4len+1)*2)) // LENGTHMS= wide char else if (fpclassify(song_length) == FP_ZERO && !memcmp(p, key4w, (key4len+1)*2)) // LENGTHMS= wide char
{ {
p += (key4len+1)*2; p += (key4len+1)*2;
wstart = (size_t)p; wstart = (size_t)p;
@ -1121,7 +1121,7 @@ boolean I_LoadSong(char *data, size_t len)
song_length = (float)(atoi(wval) / 1000.0L); song_length = (float)(atoi(wval) / 1000.0L);
} }
if (loop_point && song_length && song_length > loop_point) // Got what we needed if (fpclassify(loop_point) != FP_ZERO && fpclassify(song_length) != FP_ZERO && song_length > loop_point) // Got what we needed
// the last case is a sanity check, in case the wide char searches were false matches. // the last case is a sanity check, in case the wide char searches were false matches.
break; break;
else // continue searching else // continue searching
@ -1150,7 +1150,6 @@ void I_UnloadSong(void)
boolean I_PlaySong(boolean looping) boolean I_PlaySong(boolean looping)
{ {
boolean lpz = fpclassify(loop_point) == FP_ZERO;
#ifdef HAVE_LIBGME #ifdef HAVE_LIBGME
if (gme) if (gme)
{ {
@ -1164,7 +1163,7 @@ boolean I_PlaySong(boolean looping)
if (!music) if (!music)
return false; return false;
if (!song_length && (I_SongType() == MU_OGG || I_SongType() == MU_MP3 || I_SongType() == MU_FLAC)) if (fpclassify(song_length) == FP_ZERO && (I_SongType() == MU_OGG || I_SongType() == MU_MP3 || I_SongType() == MU_FLAC))
CONS_Debug(DBG_DETAILED, "This song is missing a LENGTHMS= tag! Required to make seeking work properly.\n"); CONS_Debug(DBG_DETAILED, "This song is missing a LENGTHMS= tag! Required to make seeking work properly.\n");
if (I_SongType() != MU_MOD && I_SongType() != MU_MID && Mix_PlayMusic(music, 0) == -1) if (I_SongType() != MU_MOD && I_SongType() != MU_MID && Mix_PlayMusic(music, 0) == -1)