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Update testresample.c

main
Sylvain 2023-01-16 09:45:48 +01:00 committed by Ryan C. Gordon
parent 6ad51558d4
commit bd793b6d75
1 changed files with 46 additions and 18 deletions
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64
test/testresample.c
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@ -16,7 +16,8 @@
int main(int argc, char **argv)
{
SDL_AudioSpec spec;
SDL_AudioCVT cvt;
SDL_AudioStream *stream;
Uint8 *dst_buf = NULL;
Uint32 len = 0;
Uint8 *data = NULL;
int cvtfreq = 0;
@ -25,6 +26,8 @@ int main(int argc, char **argv)
int blockalign = 0;
int avgbytes = 0;
SDL_RWops *io = NULL;
int src_samplesize, dst_samplesize;
int src_len, dst_len, real_dst_len;
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
@ -48,40 +51,65 @@ int main(int argc, char **argv)
return 3;
}
if (SDL_BuildAudioCVT(&cvt, spec.format, spec.channels, spec.freq,
spec.format, cvtchans, cvtfreq) == -1) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to build CVT: %s\n", SDL_GetError());
stream = SDL_CreateAudioStream(spec.format, spec.channels, spec.freq,
spec.format, cvtchans, cvtfreq);
if (stream == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to build audio stream: %s\n", SDL_GetError());
SDL_free(data);
SDL_Quit();
return 4;
}
cvt.len = len;
cvt.buf = (Uint8 *)SDL_malloc((size_t)len * cvt.len_mult);
if (cvt.buf == NULL) {
src_samplesize = (SDL_AUDIO_BITSIZE(spec.format) / 8) * spec.channels;
dst_samplesize = (SDL_AUDIO_BITSIZE(spec.format) / 8) * cvtchans;
src_len = len & ~(src_samplesize - 1);
dst_len = dst_samplesize * (src_len / src_samplesize);
if (spec.freq < cvtfreq) {
const double mult = ((double)cvtfreq) / ((double)spec.freq);
dst_len *= (int) SDL_ceil(mult);
}
dst_len = dst_len & ~(dst_samplesize - 1);
dst_buf = (Uint8 *)SDL_malloc(dst_len);
if (dst_buf == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory.\n");
SDL_free(data);
SDL_Quit();
return 5;
}
SDL_memcpy(cvt.buf, data, len);
if (SDL_ConvertAudio(&cvt) == -1) {
/* Run the audio converter */
if (SDL_PutAudioStreamData(stream, data, src_len) < 0 ||
SDL_FlushAudioStream(stream) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Conversion failed: %s\n", SDL_GetError());
SDL_free(cvt.buf);
SDL_free(dst_buf);
SDL_free(data);
SDL_Quit();
return 6;
}
real_dst_len = SDL_GetAudioStreamData(stream, dst_buf, dst_len);
if (real_dst_len < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Conversion failed: %s\n", SDL_GetError());
SDL_free(dst_buf);
SDL_free(data);
SDL_Quit();
return 7;
}
dst_len = real_dst_len;
/* write out a WAV header... */
io = SDL_RWFromFile(argv[2], "wb");
if (io == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "fopen('%s') failed: %s\n", argv[2], SDL_GetError());
SDL_free(cvt.buf);
SDL_free(dst_buf);
SDL_free(data);
SDL_Quit();
return 7;
return 8;
}
bitsize = SDL_AUDIO_BITSIZE(spec.format);
@ -89,7 +117,7 @@ int main(int argc, char **argv)
avgbytes = cvtfreq * blockalign;
SDL_WriteLE32(io, 0x46464952); /* RIFF */
SDL_WriteLE32(io, cvt.len_cvt + 36);
SDL_WriteLE32(io, dst_len + 36);
SDL_WriteLE32(io, 0x45564157); /* WAVE */
SDL_WriteLE32(io, 0x20746D66); /* fmt */
SDL_WriteLE32(io, 16); /* chunk size */
@ -100,18 +128,18 @@ int main(int argc, char **argv)
SDL_WriteLE16(io, blockalign); /* block align */
SDL_WriteLE16(io, bitsize); /* significant bits per sample */
SDL_WriteLE32(io, 0x61746164); /* data */
SDL_WriteLE32(io, cvt.len_cvt); /* size */
SDL_RWwrite(io, cvt.buf, cvt.len_cvt);
SDL_WriteLE32(io, dst_len); /* size */
SDL_RWwrite(io, dst_buf, dst_len);
if (SDL_RWclose(io) == -1) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "fclose('%s') failed: %s\n", argv[2], SDL_GetError());
SDL_free(cvt.buf);
SDL_free(dst_buf);
SDL_free(data);
SDL_Quit();
return 8;
return 9;
} /* if */
SDL_free(cvt.buf);
SDL_free(dst_buf);
SDL_free(data);
SDL_Quit();
return 0;