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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 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 * static const char *
soxr_quality_name(unsigned long recipe) soxr_quality_name(unsigned long recipe)
@ -55,39 +60,39 @@ soxr_quality_name(unsigned long recipe)
gcc_unreachable(); gcc_unreachable();
} }
static bool gcc_pure
static unsigned long
soxr_parse_converter(const char *converter) soxr_parse_converter(const char *converter)
{ {
assert(converter != nullptr); assert(converter != nullptr);
assert(memcmp(converter, "soxr", 4) == 0); assert(memcmp(converter, "soxr", 4) == 0);
if (converter[4] == '\0') if (converter[4] == '\0')
return true; return SOXR_DEFAULT_RECIPE;
if (converter[4] != ' ') if (converter[4] != ' ')
return false; return SOXR_INVALID_RECIPE;
// converter example is "soxr very high", we want the "very high" part // converter example is "soxr very high", we want the "very high" part
const char *quality = converter + 5; const char *quality = converter + 5;
if (strcmp(quality, "very high") == 0) if (strcmp(quality, "very high") == 0)
soxr_quality_recipe = SOXR_VHQ; return SOXR_VHQ;
else if (strcmp(quality, "high") == 0) else if (strcmp(quality, "high") == 0)
soxr_quality_recipe = SOXR_HQ; return SOXR_HQ;
else if (strcmp(quality, "medium") == 0) else if (strcmp(quality, "medium") == 0)
soxr_quality_recipe = SOXR_MQ; return SOXR_MQ;
else if (strcmp(quality, "low") == 0) else if (strcmp(quality, "low") == 0)
soxr_quality_recipe = SOXR_LQ; return SOXR_LQ;
else if (strcmp(quality, "quick") == 0) else if (strcmp(quality, "quick") == 0)
soxr_quality_recipe = SOXR_QQ; return SOXR_QQ;
else else
return false; return SOXR_INVALID_RECIPE;
return true;
} }
bool bool
pcm_resample_soxr_global_init(const char *converter, Error &error) 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, error.Format(soxr_domain,
"unknown samplerate converter '%s'", converter); "unknown samplerate converter '%s'", converter);
return false; return false;