Mercurial > sdl-ios-xcode

diff src/audio/mint/SDL_mintaudio_stfa.c @ 2005:45af7d69f8eb

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MiNT audio driver cleanups for clamping types and channels to supported values. int32 support now available in one instance.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 01 Sep 2006 06:32:54 +0000
parents c121d94672cb
children d48ead2d2ba5
line wrap: on
line diff
--- a/src/audio/mint/SDL_mintaudio_stfa.c	Fri Sep 01 06:01:03 2006 +0000
+++ b/src/audio/mint/SDL_mintaudio_stfa.c	Fri Sep 01 06:32:54 2006 +0000
@@ -206,12 +206,21 @@
 {
     int i;
 
-    DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ", spec->format & 0x00ff));
-    DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000) != 0)));
-    DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000) != 0)));
+    DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ", SDL_AUDIO_BITSIZE(spec->format)));
+    DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(spec->format)));
+    DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(spec->format)));
+    DEBUG_PRINT(("big endian=%d, ", SDL_AUDIO_ISBIGENDIAN(spec->format)));
     DEBUG_PRINT(("channels=%d, ", spec->channels));
     DEBUG_PRINT(("freq=%d\n", spec->freq));
 
+    if (SDL_AUDIO_BITSIZE(spec->format) > 16) {
+        spec->format = AUDIO_S16SYS;  /* clamp out int32/float32 ... */
+    }
+
+    if (spec->channels > 2) {
+        spec->channels = 2;  /* no more than stereo! */
+    }
+
     /* Check formats available */
     MINTAUDIO_freqcount = 0;
     for (i = 0; i < 16; i++) {
@@ -230,9 +239,10 @@
     MINTAUDIO_numfreq = SDL_MintAudio_SearchFrequency(this, spec->freq);
     spec->freq = MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
 
-    DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ", spec->format & 0x00ff));
-    DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000) != 0)));
-    DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000) != 0)));
+    DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ", SDL_AUDIO_BITSIZE(spec->format)));
+    DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(spec->format)));
+    DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(spec->format)));
+    DEBUG_PRINT(("big endian=%d, ", SDL_AUDIO_ISBIGENDIAN(spec->format)));
     DEBUG_PRINT(("channels=%d, ", spec->channels));
     DEBUG_PRINT(("freq=%d\n", spec->freq));
 
@@ -255,7 +265,7 @@
     /* Select replay format */
     cookie_stfa->sound_control =
         MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
-    if ((spec->format & 0xff) == 8) {
+    if (SDL_AUDIO_BITSIZE(spec->format) == 8) {
         cookie_stfa->sound_control |= STFA_FORMAT_8BIT;
     } else {
         cookie_stfa->sound_control |= STFA_FORMAT_16BIT;
@@ -265,12 +275,12 @@
     } else {
         cookie_stfa->sound_control |= STFA_FORMAT_MONO;
     }
-    if ((spec->format & 0x8000) != 0) {
+    if (SDL_AUDIO_ISSIGNED(spec->format) != 0) {
         cookie_stfa->sound_control |= STFA_FORMAT_SIGNED;
     } else {
         cookie_stfa->sound_control |= STFA_FORMAT_UNSIGNED;
     }
-    if ((spec->format & 0x1000) != 0) {
+    if (SDL_AUDIO_ISBIGENDIAN(spec->format) != 0) {
         cookie_stfa->sound_control |= STFA_FORMAT_BIGENDIAN;
     } else {
         cookie_stfa->sound_control |= STFA_FORMAT_LITENDIAN;