/*
* Test reading of audio files.
*/
void
test_audio_file()
{
START_TEST;
char* filenames[] = {"data/mono_0:10.wav", "data/stereo_0:10.wav", "data/mono_0:10.mp3", "data/stereo_0:10.mp3", "data/mono_0:10.m4a", "data/stereo_0:10.m4a", "data/mono_0:10.opus", "data/stereo_0:10.opus"};
int i; for(i=0;i<G_N_ELEMENTS(filenames);i++){
WfDecoder f = {{0,}};
char* filename = find_wav(filenames[i]);
if(!ad_open(&f, filename)) FAIL_TEST("file open: %s", filenames[i]);
if(!g_str_has_suffix(filenames[i], ".opus")){
assert(f.info.sample_rate == 44100, "samplerate: %i (expected 44100)", f.info.sample_rate);
}else{
assert(f.info.sample_rate == 48000, "samplerate: %i (expected 48000)", f.info.sample_rate);
}
int n = 8;
int read_len = WF_PEAK_RATIO * n;
int16_t data[f.info.channels][read_len];
WfBuf16 buf = {
.buf = {data[0], data[1]},
.size = n * WF_PEAK_RATIO
};
size_t readcount = 0;
size_t total = 0;
do {
readcount = ad_read_short(&f, &buf);
total += readcount;
} while (readcount > 0);
dbg(1, "diff=%zu", abs((int)total - (int)f.info.frames));
if(g_str_has_suffix(filenames[i], ".wav") || g_str_has_suffix(filenames[i], ".flac")){
assert(total == f.info.frames, "%s: incorrect number of frames read: %"PRIi64, filenames[i], f.info.frames);
assert(!(total % 512) || !(total % 100), "%s: bad framecount: %zu", filenames[i], total); // test file sizes are always a round number
}else{
// for some file types, f.info.frames is only an estimate
assert(abs((int)total - (int)f.info.frames) < 2048, "%s: incorrect number of frames read: %"PRIi64, filenames[i], f.info.frames);
}
ad_close(&f);
g_free(filename);
}
bool
wf_ff_peakgen(const char* infilename, const char* peak_filename)
{
WfDecoder f = {{0,}};
if(!ad_open(&f, infilename)) return false;
SNDFILE* outfile;
SF_INFO sfinfo = {
.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16,
.channels = f.info.channels,
.samplerate = f.info.sample_rate,
};
gchar* basename = g_path_get_basename(peak_filename);
gchar* tmp_path = g_build_filename("/tmp", basename, NULL);
g_free(basename);
if(!(outfile = sf_open(tmp_path, SFM_WRITE, &sfinfo))) {
printf ("Not able to open output file %s.\n", tmp_path);
puts(sf_strerror(NULL));
return false;
}
int total_frames_written = 0;
WfPeakSample total[sfinfo.channels];
memset(total, 0, sizeof(WfPeakSample) * sfinfo.channels);
int n = 8;
int read_len = WF_PEAK_RATIO * n;
float* sf_data = g_malloc(sizeof(float) * read_len);
int16_t data[f.info.channels][read_len];
WfBuf16 buf = {
.buf = {
data[0], data[1]
},
.size = n * WF_PEAK_RATIO
};
int readcount;
int total_readcount = 0;
do {
readcount = ad_read_short(&f, &buf);
total_readcount += readcount;
int remaining = readcount;
WfPeakSample peak[sfinfo.channels];
int j = 0;
for(; j<n; j++) {
WfPeakSample w[sfinfo.channels];
memset(peak, 0, sizeof(WfPeakSample) * sfinfo.channels);
int k;
for (k = 0; k < MIN(remaining, WF_PEAK_RATIO); k+=sfinfo.channels) {
int c;
for(c=0; c<sfinfo.channels; c++) {
int16_t val = buf.buf[c][WF_PEAK_RATIO * j + k];
peak[c] = (WfPeakSample) {
MAX(peak[c].positive, val),
MIN(peak[c].negative, MAX(val, -32767)), // TODO value of SHRT_MAX messes up the rendering - why?
};
}
};
remaining -= WF_PEAK_RATIO;
int c;
for(c=0; c<sfinfo.channels; c++) {
w[c] = peak[c];
total[c] = (WfPeakSample) {
MAX(total[c].positive, w[c].positive),
MIN(total[c].negative, w[c].negative),
};
}
total_frames_written += sf_writef_short (outfile, (short*)w, WF_PEAK_VALUES_PER_SAMPLE);
}
} while (readcount > 0);
#if 0
if(f.info.channels > 1) dbg(0, "max=%i,%i min=%i,%i", total[0].positive, total[1].positive, total[0].negative, total[1].negative);
else dbg(0, "max=%i min=%i", total[0].positive, total[0].negative);
#endif
#ifdef DEBUG
if(g_str_has_suffix(infilename, ".mp3")) {
dbg(1, "mp3");
f.info.frames = total_readcount; // update the estimate with the real frame count.
}
#else
if(total_frames_written / WF_PEAK_VALUES_PER_SAMPLE != f.info.frames / WF_PEAK_RATIO) {
gwarn("unexpected number of frames: %i != %Lu", total_frames_written / WF_PEAK_VALUES_PER_SAMPLE, f.info.frames / WF_PEAK_RATIO);
}
#endif
ad_close(&f);
sf_close (outfile);
g_free(sf_data);
int renamed = !rename(tmp_path, peak_filename);
g_free(tmp_path);
if(!renamed) return false;
return true;
}
