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speaker-test: add test pattern for PCM layer debugging purposes

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2010-08-18 08:22:23 +02:00
parent 73c79ebf26
commit 4c337275d1
1 changed files with 73 additions and 2 deletions
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75
speaker-test/speaker-test.c
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@ -63,7 +63,8 @@
enum {
TEST_PINK_NOISE = 1,
TEST_SINE,
TEST_WAV
TEST_WAV,
TEST_PATTERN,
};
#define MAX_CHANNELS 16
@ -303,6 +304,71 @@ static void generate_pink_noise( uint8_t *frames, int channel, int count) {
}
}
/*
* useful for tests
*/
static void generate_pattern(uint8_t *frames, int channel, int count, int *_pattern) {
int pattern = *_pattern;
int chn;
int8_t *samp8 = (int8_t*) frames;
int16_t *samp16 = (int16_t*) frames;
int32_t *samp32 = (int32_t*) frames;
float *samp_f = (float*) frames;
while (count-- > 0) {
for(chn=0;chn<channels;chn++,pattern++) {
switch (format) {
case SND_PCM_FORMAT_S8:
if (chn==channel) {
*samp8++ = pattern & 0xff;
} else {
*samp8++ = 0;
}
break;
case SND_PCM_FORMAT_S16_LE:
if (chn==channel) {
*samp16++ = LE_SHORT(pattern & 0xfffff);
} else {
*samp16++ = 0;
}
break;
case SND_PCM_FORMAT_S16_BE:
if (chn==channel) {
*samp16++ = BE_SHORT(pattern & 0xffff);
} else {
*samp16++ = 0;
}
break;
case SND_PCM_FORMAT_FLOAT_LE:
if (chn==channel) {
*samp_f++ = LE_INT(((double)pattern) / INT32_MAX);
} else {
*samp_f++ = 0.0;
}
break;
case SND_PCM_FORMAT_S32_LE:
if (chn==channel) {
*samp32++ = LE_INT(pattern);
} else {
*samp32++ = 0;
}
break;
case SND_PCM_FORMAT_S32_BE:
if (chn==channel) {
*samp32++ = BE_INT(pattern);
} else {
*samp32++ = 0;
}
break;
default:
;
}
}
}
*_pattern = pattern;
}
static int set_hwparams(snd_pcm_t *handle, snd_pcm_hw_params_t *params, snd_pcm_access_t access) {
unsigned int rrate;
int err;
@ -687,6 +753,7 @@ static int write_buffer(snd_pcm_t *handle, uint8_t *ptr, int cptr)
static int write_loop(snd_pcm_t *handle, int channel, int periods, uint8_t *frames)
{
double phase = 0;
int pattern = 0;
int err, n;
fflush(stdout);
@ -713,6 +780,8 @@ static int write_loop(snd_pcm_t *handle, int channel, int periods, uint8_t *fram
for(n = 0; n < periods; n++) {
if (test_type == TEST_PINK_NOISE)
generate_pink_noise(frames, channel, period_size);
else if (test_type == TEST_PATTERN)
generate_pattern(frames, channel, period_size, &pattern);
else
generate_sine(frames, channel, period_size, &phase);
@ -860,9 +929,11 @@ int main(int argc, char *argv[]) {
test_type = TEST_SINE;
else if (*optarg == 'w')
test_type = TEST_WAV;
else if (*optarg == 't')
test_type = TEST_PATTERN;
else if (isdigit(*optarg)) {
test_type = atoi(optarg);
if (test_type < TEST_PINK_NOISE || test_type > TEST_WAV) {
if (test_type < TEST_PINK_NOISE || test_type > TEST_PATTERN) {
fprintf(stderr, _("Invalid test type %s\n"), optarg);
exit(1);
}