void cLogWriter::SetFileName(const tWString& asFile)
{
if(msFileName == asFile) return;
msFileName = asFile;
ReopenFile();
}
void FFMS_AudioSource::SetOutputFormat(FFMS_ResampleOptions const& opt) {
if (opt.SampleRate != AP.SampleRate)
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNSUPPORTED,
"Sample rate changes are currently unsupported.");
#ifndef FFMS_RESAMPLING_ENABLED
if (opt.SampleFormat != AP.SampleFormat || opt.SampleRate != AP.SampleRate || opt.ChannelLayout != AP.ChannelLayout)
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNSUPPORTED,
"FFMS was not built with resampling enabled. The only supported conversion is interleaving planar audio.");
#endif
#ifdef WITH_AVRESAMPLE
if (opt.SampleFormat != AP.SampleFormat || opt.ChannelLayout != AP.ChannelLayout)
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNSUPPORTED,
"FFMS was not built with FFMPEG resampling enabled.");
#endif
// Cache stores audio in the output format, so clear it and reopen the file
Cache.clear();
PacketNumber = 0;
ReopenFile();
FlushBuffers(CodecContext);
BytesPerSample = av_get_bytes_per_sample(static_cast<AVSampleFormat>(opt.SampleFormat)) * av_get_channel_layout_nb_channels(opt.ChannelLayout);
NeedsResample =
opt.SampleFormat != (int)CodecContext->sample_fmt ||
opt.SampleRate != AP.SampleRate ||
opt.ChannelLayout != AP.ChannelLayout ||
opt.ForceResample;
#ifdef FFMS_RESAMPLING_ENABLED
if (!NeedsResample) return;
FFResampleContext newContext;
SetOptions(opt, newContext, resample_options);
av_opt_set_int(newContext, "in_sample_rate", AP.SampleRate, 0);
av_opt_set_int(newContext, "in_sample_fmt", CodecContext->sample_fmt, 0);
av_opt_set_int(newContext, "in_channel_layout", AP.ChannelLayout, 0);
av_opt_set_int(newContext, "out_sample_rate", opt.SampleRate, 0);
#ifdef WITH_SWRESAMPLE
av_opt_set_channel_layout(newContext, "out_channel_layout", opt.ChannelLayout, 0);
av_opt_set_sample_fmt(newContext, "out_sample_fmt", (AVSampleFormat)opt.SampleFormat, 0);
#endif
if (ffms_open(newContext))
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNKNOWN,
"Could not open avresample context");
newContext.swap(ResampleContext);
#endif
}
