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pcm/SoxrResampler: soxr_parse_converter() returns unsigned long

This commit is contained in:
Max Kellermann 2015-01-21 19:55:48 +01:00
parent aa08f9692c
commit 8b366f0795
1 changed files with 18 additions and 13 deletions
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31
src/pcm/SoxrResampler.cxx
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@ -34,7 +34,12 @@ static constexpr Domain soxr_domain("soxr");
static constexpr unsigned long SOXR_DEFAULT_RECIPE = SOXR_HQ;
static unsigned long soxr_quality_recipe = SOXR_DEFAULT_RECIPE;
/**
* Special value for "invalid argument".
*/
static constexpr unsigned long SOXR_INVALID_RECIPE = -1;
static unsigned long soxr_quality_recipe;
static const char *
soxr_quality_name(unsigned long recipe)
@ -55,39 +60,39 @@ soxr_quality_name(unsigned long recipe)
gcc_unreachable();
}
static bool
gcc_pure
static unsigned long
soxr_parse_converter(const char *converter)
{
assert(converter != nullptr);
assert(memcmp(converter, "soxr", 4) == 0);
if (converter[4] == '\0')
return true;
return SOXR_DEFAULT_RECIPE;
if (converter[4] != ' ')
return false;
return SOXR_INVALID_RECIPE;
// converter example is "soxr very high", we want the "very high" part
const char *quality = converter + 5;
if (strcmp(quality, "very high") == 0)
soxr_quality_recipe = SOXR_VHQ;
return SOXR_VHQ;
else if (strcmp(quality, "high") == 0)
soxr_quality_recipe = SOXR_HQ;
return SOXR_HQ;
else if (strcmp(quality, "medium") == 0)
soxr_quality_recipe = SOXR_MQ;
return SOXR_MQ;
else if (strcmp(quality, "low") == 0)
soxr_quality_recipe = SOXR_LQ;
return SOXR_LQ;
else if (strcmp(quality, "quick") == 0)
soxr_quality_recipe = SOXR_QQ;
return SOXR_QQ;
else
return false;
return true;
return SOXR_INVALID_RECIPE;
}
bool
pcm_resample_soxr_global_init(const char *converter, Error &error)
{
if (!soxr_parse_converter(converter)) {
soxr_quality_recipe = soxr_parse_converter(converter);
if (soxr_quality_recipe == SOXR_INVALID_RECIPE) {
error.Format(soxr_domain,
"unknown samplerate converter '%s'", converter);
return false;