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Aegisub
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Code Issues Releases Wiki Activity

Avisynth audio provider will now never deliver audio under 32 kHz, fixing the dsound playback bug. 

Originally committed to SVN as r1776.
This commit is contained in:
Rodrigo Braz Monteiro 2008-01-19 02:38:31 +00:00
parent dd3047e571
commit dc6aa3f161
3 changed files with 16 additions and 4 deletions
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6
aegisub/audio_provider.cpp
View File

@ -220,6 +220,9 @@ AudioProvider *AudioProviderFactory::GetAudioProvider(wxString filename, int cac
// Failed
if (!provider) throw error;
// Give it a conversor if needed
if (provider->GetBytesPerSample() != 2) provider = new ConvertAudioProvider(provider);
// Change provider to RAM/HD cache if needed
if (cache == -1) cache = Options.AsInt(_T("Audio Cache"));
if (cache) {
@ -238,9 +241,6 @@ AudioProvider *AudioProviderFactory::GetAudioProvider(wxString filename, int cac
}
}
// Give it a conversor if needed
if (provider && provider->GetBytesPerSample() != 2) provider = new ConvertAudioProvider(provider);
// Return
return provider;
}

2
aegisub/audio_provider_avs.cpp
View File

@ -175,9 +175,11 @@ void AvisynthAudioProvider::LoadFromClip(AVSValue _clip) {
// Convert to 16 bits per sample
script = env->Invoke("ConvertAudioTo16bit", script);
vi = script.AsClip()->GetVideoInfo();
// Convert sample rate
int setsample = Options.AsInt(_T("Audio Sample Rate"));
if (vi.SamplesPerSecond() < 32000) setsample = 44100;
if (setsample != 0) {
AVSValue args[2] = { script, setsample };
script = env->Invoke("ResampleAudio", AVSValue(args,2));

12
aegisub/audio_provider_convert.cpp
View File

@ -63,8 +63,11 @@ ConvertAudioProvider::~ConvertAudioProvider() {
/////////////
// Get audio
void ConvertAudioProvider::GetAudio(void *destination, int64_t start, int64_t count) {
// Bits per sample
int srcBps = source->GetBytesPerSample();
// Convert from 8-bit to 16-bit
if (source->GetBytesPerSample() == 1) {
if (srcBps == 1) {
unsigned char *buffer = new unsigned char[count];
source->GetAudio(buffer,start,count);
short temp;
@ -73,5 +76,12 @@ void ConvertAudioProvider::GetAudio(void *destination, int64_t start, int64_t co
temp = (short) buffer[i];
dst[i] = (temp-128)*256+temp;
}
delete [] buffer;
}
// No conversion needed
else if (srcBps == 2) source->GetAudio(destination,start,count);
// Unsupported
else throw _T("Unknown bits per sample value.");
}