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Decoding with my own translation of libmad, loading and playback progress, next and prev songs

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This commit is contained in:
Blue 2019-01-24 22:54:16 +03:00
parent 0e31c5fdf2
commit e690d67b80
21 changed files with 290 additions and 11796 deletions
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35
lib/wModel/file/audio.cpp
View file

@ -3,12 +3,8 @@
#include <mad.h>
M::Audio::Audio(W::Blob* p_file, const W::Address& addr, QObject* parent):
File(p_file, addr, parent),
frames()
File(p_file, addr, parent)
{
W::Handler* requestFrames = W::Handler::create(address + W::Address({u"requestFrames"}), this, &M::Audio::_h_requestFrames);
addHandler(requestFrames);
}
M::Audio::~Audio()
@ -32,41 +28,18 @@ void M::Audio::initAdditional(const W::String& p_mime)
uint64_t length = 0;
uint64_t tBits = 0;
uint64_t amount = 0;
while(stream.error != MAD_ERROR_BUFLEN) { //TODO handle other errors;
int success = mad_header_decode(&header, &stream);
if (success == 0) {
frames.emplace_back(stream.this_frame - stream.buffer, stream.next_frame - stream.this_frame);
amount++;
length += header.duration.seconds * MAD_TIMER_RESOLUTION + header.duration.fraction;
tBits += header.bitrate;
}
}
additional.insert(u"duration", new W::Uint64(length / MAD_TIMER_RESOLUTION));
additional.insert(u"bitrate", new W::Uint64(tBits / frames.size()));
additional.insert(u"framesAmount", new W::Uint64(frames.size()));
}
void M::Audio::h_requestFrames(const W::Event& ev)
{
const W::Vocabulary& vc = static_cast<const W::Vocabulary&>(ev.getData());
const W::Uint64& index = static_cast<const W::Uint64&>(vc.at(u"index"));
const W::Uint64& amount = static_cast<const W::Uint64&>(vc.at(u"amount"));
W::Vocabulary* evc = new W::Vocabulary();
if (index + amount > frames.size()) {
evc->insert(u"result", new W::Uint64(1));
} else {
evc->insert(u"result", new W::Uint64(0));
W::Vector* vframes = new W::Vector();
for (int i = 0; i < amount; ++i) {
const std::pair<uint64_t, uint64_t>& pair = frames[index + i]; //TODO optimize?
vframes->push(file->slice(pair.first, pair.second));
}
evc->insert(u"frames", vframes);
}
response(evc, W::Address{u"responseFrames"}, ev);
additional.insert(u"bitrate", new W::Uint64(tBits / amount));
}

5
lib/wModel/file/audio.h
View file

@ -24,11 +24,6 @@ namespace M {
protected:
void initAdditional(const W::String& p_mime) override;
handler(requestFrames);
private:
std::deque<std::pair<uint64_t, uint64_t>> frames;
};
}

22
lib/wModel/file/file.cpp
View file

@ -16,9 +16,11 @@ M::File::File(W::Blob* p_file, const W::Address& addr, QObject* parent):
{
W::Handler* get = W::Handler::create(address + W::Address({u"get"}), this, &M::File::_h_get);
W::Handler* getAdditional = W::Handler::create(address + W::Address({u"getAdditional"}), this, &M::File::_h_getAdditional);
W::Handler* getSlice = W::Handler::create(address + W::Address({u"getSlice"}), this, &M::File::_h_getSlice);
addHandler(get);
addHandler(getAdditional);
addHandler(getSlice);
}
M::File::~File()
@ -35,7 +37,7 @@ void M::File::initAdditional(const W::String& p_mime)
{
additional.clear();
additional.insert(u"size", new W::Uint64(file->size()));
additional.insert(u"size", new W::Uint64(file->length()));
additional.insert(u"mimeType", p_mime);
}
@ -106,3 +108,21 @@ M::File * M::File::create(W::Blob* blob, const W::Address& addr, QObject* parent
out->initAdditional(W::String(mime.toStdString()));
return out;
}
void M::File::h_getSlice(const W::Event& ev)
{
const W::Vocabulary& vc = static_cast<const W::Vocabulary&>(ev.getData());
const W::Uint64& begin = static_cast<const W::Uint64&>(vc.at(u"begin"));
const W::Uint64& size = static_cast<const W::Uint64&>(vc.at(u"size"));
W::Vocabulary* evc = new W::Vocabulary();
if (begin > file->length() || begin + size > file->length()) {
evc->insert(u"result", new W::Uint64(1));
} else {
evc->insert(u"result", new W::Uint64(0));
evc->insert(u"slice", file->slice(begin, size));
}
response(evc, W::Address{u"getSlice"}, ev);
}

1
lib/wModel/file/file.h
View file

@ -32,6 +32,7 @@ namespace M {
handler(get);
handler(getAdditional);
handler(getSlice);
protected:
W::Vocabulary additional;