From 6aaedb813fa11ba0679c3051bc2eb28646b9506c Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 30 Aug 2025 16:53:58 -0700
Subject: Update to SDL3

---
 src/contrib/SDL-3.2.20/test/testresample.c | 154 +++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 src/contrib/SDL-3.2.20/test/testresample.c

(limited to 'src/contrib/SDL-3.2.20/test/testresample.c')

diff --git a/src/contrib/SDL-3.2.20/test/testresample.c b/src/contrib/SDL-3.2.20/test/testresample.c
new file mode 100644
index 0000000..55db2f3
--- /dev/null
+++ b/src/contrib/SDL-3.2.20/test/testresample.c
@@ -0,0 +1,154 @@
+/*
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+#include <SDL3/SDL_test.h>
+
+static void log_usage(char *progname, SDLTest_CommonState *state) {
+    static const char *options[] = { "in.wav", "out.wav", "newfreq", "newchan", NULL };
+    SDLTest_CommonLogUsage(state, progname, options);
+}
+
+int main(int argc, char **argv)
+{
+    SDL_AudioSpec spec;
+    SDL_AudioSpec cvtspec;
+    SDL_AudioStream *stream = NULL;
+    Uint8 *dst_buf = NULL;
+    Uint32 len = 0;
+    Uint8 *data = NULL;
+    int bitsize = 0;
+    int blockalign = 0;
+    int avgbytes = 0;
+    SDL_IOStream *io = NULL;
+    int dst_len;
+    int ret = 0;
+    int argpos = 0;
+    int i;
+    SDLTest_CommonState *state;
+    char *file_in = NULL;
+    char *file_out = NULL;
+
+    /* Initialize test framework */
+    state = SDLTest_CommonCreateState(argv, 0);
+    if (!state) {
+        return 1;
+    }
+
+    SDL_zero(cvtspec);
+
+    /* Parse commandline */
+    for (i = 1; i < argc;) {
+        int consumed;
+
+        consumed = SDLTest_CommonArg(state, i);
+        if (!consumed) {
+            if (argpos == 0) {
+                file_in = argv[i];
+                argpos++;
+                consumed = 1;
+            } else if (argpos == 1) {
+                file_out = argv[i];
+                argpos++;
+                consumed = 1;
+            } else if (argpos == 2) {
+                char *endp;
+                cvtspec.freq  = (int)SDL_strtoul(argv[i], &endp, 0);
+                if (endp != argv[i] && *endp == '\0') {
+                    argpos++;
+                    consumed = 1;
+                }
+            } else if (argpos == 3) {
+                char *endp;
+                cvtspec.channels = (int)SDL_strtoul(argv[i], &endp, 0);
+                if (endp != argv[i] && *endp == '\0') {
+                    argpos++;
+                    consumed = 1;
+                }
+            }
+        }
+        if (consumed <= 0) {
+            log_usage(argv[0], state);
+            ret = 1;
+            goto end;
+        }
+
+        i += consumed;
+    }
+
+    if (argpos != 4) {
+        log_usage(argv[0], state);
+        ret = 1;
+        goto end;
+    }
+
+    if (!SDL_Init(SDL_INIT_AUDIO)) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init() failed: %s", SDL_GetError());
+        ret = 2;
+        goto end;
+    }
+
+    if (!SDL_LoadWAV(file_in, &spec, &data, &len)) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to load %s: %s", file_in, SDL_GetError());
+        ret = 3;
+        goto end;
+    }
+
+    cvtspec.format = spec.format;
+    if (!SDL_ConvertAudioSamples(&spec, data, len, &cvtspec, &dst_buf, &dst_len)) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to convert samples: %s", SDL_GetError());
+        ret = 4;
+        goto end;
+    }
+
+    /* write out a WAV header... */
+    io = SDL_IOFromFile(file_out, "wb");
+    if (!io) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "opening '%s' failed: %s", file_out, SDL_GetError());
+        ret = 5;
+        goto end;
+    }
+
+    bitsize = SDL_AUDIO_BITSIZE(spec.format);
+    blockalign = (bitsize / 8) * cvtspec.channels;
+    avgbytes = cvtspec.freq * blockalign;
+
+    SDL_WriteU32LE(io, 0x46464952); /* RIFF */
+    SDL_WriteU32LE(io, dst_len + 36);
+    SDL_WriteU32LE(io, 0x45564157);                             /* WAVE */
+    SDL_WriteU32LE(io, 0x20746D66);                             /* fmt */
+    SDL_WriteU32LE(io, 16);                                     /* chunk size */
+    SDL_WriteU16LE(io, SDL_AUDIO_ISFLOAT(spec.format) ? 3 : 1); /* uncompressed */
+    SDL_WriteU16LE(io, (Uint16)cvtspec.channels);               /* channels */
+    SDL_WriteU32LE(io, cvtspec.freq);                           /* sample rate */
+    SDL_WriteU32LE(io, avgbytes);                               /* average bytes per second */
+    SDL_WriteU16LE(io, (Uint16)blockalign);                     /* block align */
+    SDL_WriteU16LE(io, (Uint16)bitsize);                        /* significant bits per sample */
+    SDL_WriteU32LE(io, 0x61746164);                             /* data */
+    SDL_WriteU32LE(io, dst_len);                                /* size */
+    SDL_WriteIO(io, dst_buf, dst_len);
+
+    if (!SDL_CloseIO(io)) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "closing '%s' failed: %s", file_out, SDL_GetError());
+        ret = 6;
+        goto end;
+    }
+
+end:
+    SDL_free(dst_buf);
+    SDL_free(data);
+    SDL_DestroyAudioStream(stream);
+    SDL_Quit();
+    SDLTest_CommonDestroyState(state);
+    return ret;
+}
-- 
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