46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#include "audio.h"
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#include <mad.h>
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M::Audio::Audio(W::Blob* p_file, const W::Address& addr, QObject* parent):
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File(p_file, addr, parent)
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{
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}
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M::Audio::~Audio()
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{}
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M::Model::ModelType M::Audio::getType() const
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{
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return type;
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}
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void M::Audio::initAdditional(const W::String& p_mime)
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{
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File::initAdditional(p_mime); //TODO handle other than mp3 formats
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mad_stream stream;
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mad_header header;
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mad_stream_init(&stream);
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mad_header_init(&header);
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mad_stream_buffer(&stream, file->uchar(), file->size());
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uint64_t length = 0;
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uint64_t tBits = 0;
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uint64_t amount = 0;
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while(stream.error != MAD_ERROR_BUFLEN) { //TODO handle other errors;
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int success = mad_header_decode(&header, &stream);
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if (success == 0) {
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amount++;
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length += header.duration.seconds * MAD_TIMER_RESOLUTION + header.duration.fraction;
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tBits += header.bitrate;
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}
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}
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additional.insert(u"duration", new W::Uint64(length * 1000 / MAD_TIMER_RESOLUTION));
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additional.insert(u"bitrate", new W::Uint64(tBits / amount));
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}
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