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523 lines (436 loc) · 10.8 KB
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#include <iostream>
#include "averror.h"
#include "dictionary.h"
using namespace std;
namespace av {
Dictionary::Dictionary()
{
}
Dictionary::Dictionary(AVDictionary * dict, bool takeOwning)
: FFWrapperPtr<AVDictionary>(dict),
m_owning(takeOwning)
{
}
Dictionary::~Dictionary()
{
if (m_owning && m_raw)
{
av_dict_free(&m_raw);
}
}
Dictionary::Dictionary(const Dictionary & other)
: FFWrapperPtr<AVDictionary>()
{
copyFrom(other);
}
Dictionary &Dictionary::operator=(const Dictionary & rhs)
{
if (this != &rhs)
{
Dictionary(rhs).swap(*this);
}
return *this;
}
Dictionary::Dictionary(Dictionary &&other)
: Dictionary(other.m_raw, other.m_owning)
{
other.m_owning = true;
other.m_raw = nullptr;
}
Dictionary& Dictionary::operator=(Dictionary&& rhs)
{
if (this != &rhs)
{
Dictionary(std::move(rhs)).swap(*this);
}
return *this;
}
Dictionary::Dictionary(std::initializer_list<std::pair<const char *, const char *>> list, int flags)
{
for (auto const &item : list)
{
set_priv(std::get<0>(item), std::get<1>(item), flags);
}
}
Dictionary &Dictionary::operator=(std::initializer_list<std::pair<const char *, const char *>> list)
{
Dictionary(std::move(list)).swap(*this);
return *this;
}
Dictionary::Iterator Dictionary::begin()
{
return Iterator(*this);
}
Dictionary::Iterator Dictionary::end()
{
return Iterator(*this, Entry());
}
Dictionary::ConstIterator Dictionary::begin() const
{
return ConstIterator(*this);
}
Dictionary::ConstIterator Dictionary::end() const
{
return ConstIterator(*this, Entry());
}
Dictionary::ConstIterator Dictionary::cbegin() const
{
return ConstIterator(*this);
}
Dictionary::ConstIterator Dictionary::cend() const
{
return ConstIterator(*this, Entry());
}
bool Dictionary::isOwning() const noexcept
{
return m_owning;
}
void Dictionary::assign(AVDictionary *dict, bool takeOwning) noexcept
{
if (raw() == dict) {
if (!m_owning && takeOwning) {
m_owning = takeOwning;
}
return;
}
Dictionary(dict, takeOwning).swap(*this);
}
const char *Dictionary::operator[](size_t index) const
{
if (index >= count())
throw_error_code(Errors::DictOutOfRage);
// Take a first element
auto entry = av_dict_get(m_raw, "", nullptr, FlagIgnoreSuffix);
entry += index; // switch to next element
return entry->value;
}
Dictionary::Entry Dictionary::operator[](size_t index)
{
Entry holder;
if (index >= count())
throw_error_code(Errors::DictOutOfRage);
// Take a first element
auto entry = av_dict_get(m_raw, "", nullptr, FlagIgnoreSuffix);
entry += index; // switch to next element
holder.m_entry = entry;
return holder;
}
const char *Dictionary::operator[](const char *key) const
{
auto entry = av_dict_get(m_raw, key, nullptr, 0);
if (!entry)
throw_error_code(Errors::DictNoKey);
return entry->value;
}
Dictionary::Entry Dictionary::operator[](const char *key) noexcept
{
Entry holder;
auto prev = m_raw;
auto entry = av_dict_get(m_raw, key, nullptr, 0);
if (entry) {
holder.m_entry = entry;
return holder;
}
if (av_dict_set(&m_raw, key, "", 0) < 0) {
return holder;
}
if (prev == nullptr) {
m_owning = true;
}
// we can optimize here: new key will be last in array, so we can quickly access to them
entry = av_dict_get(m_raw, "", nullptr, FlagIgnoreSuffix);
if (!entry)
return holder;
entry += count()-1;
holder.m_entry = entry;
return holder;
}
size_t Dictionary::count() const noexcept
{
return static_cast<size_t>(av_dict_count(m_raw));
}
size_t Dictionary::size() const noexcept
{
return count();
}
const char *Dictionary::get(const char * key, int flags) const noexcept
{
auto entry = av_dict_get(m_raw, key, nullptr, flags);
if (entry)
{
return entry->value;
}
return nullptr;
}
const char *Dictionary::get(const std::string & key, int flags) const noexcept
{
return get(key.c_str(), flags);
}
string Dictionary::toString(const char keyValSep, const char pairsSep, OptionalErrorCode ec) const
{
string str;
char *buf = nullptr;
clear_if(ec);
int sts = av_dict_get_string(m_raw, &buf, keyValSep, pairsSep);
if (sts >= 0)
{
str = buf;
av_freep(&buf);
}
else
{
throws_if(ec, sts, ffmpeg_category());
}
return str;
}
Dictionary::AvStringPtr Dictionary::toRawStringPtr(const char keyValSep, const char pairsSep, OptionalErrorCode ec) const
{
AvStringPtr str;
char *buf = nullptr;
clear_if(ec);
int sts = av_dict_get_string(m_raw, &buf, keyValSep, pairsSep);
if (sts >= 0)
{
str.reset(buf); // take owning
}
else
{
throws_if(ec, sts, ffmpeg_category());
}
return str;
}
int Dictionary::set_priv(const char * key, const char * value, int flags) noexcept
{
auto prev = m_raw;
int sts = av_dict_set(&m_raw, key, value, flags);
if (sts >= 0 && prev == nullptr) {
m_owning = true;
}
return sts;
}
int Dictionary::set_priv(const std::string & key, const std::string & value, int flags) noexcept
{
// We MUST dup this keys/vals
flags &= ~(FlagDontStrdupKey|FlagDontStrdupVal);
return set_priv(key.c_str(), value.c_str(), flags);
}
int Dictionary::set_priv(const char * key, int64_t value, int flags) noexcept
{
auto prev = m_raw;
int sts = av_dict_set_int(&m_raw, key, value, flags);
if (sts >= 0 && prev == nullptr) {
m_owning = true;
}
return sts;
}
int Dictionary::set_priv(const std::string & key, int64_t value, int flags) noexcept
{
// We MUST dup this key
flags &= ~(FlagDontStrdupKey);
return set_priv(key.c_str(), value, flags);
}
int Dictionary::parseString_priv(const char *str, const char *keyvalSep, const char *pairsSep, int flags)
{
auto prev = m_raw;
int sts = av_dict_parse_string(&m_raw,
str,
keyvalSep,
pairsSep,
flags);
if (sts >= 0 && prev == nullptr)
m_owning = true;
return sts;
}
void Dictionary::parseString_priv(OptionalErrorCode ec, const char *str, const char *keyvalSep, const char *pairsSep, int flags)
{
clear_if(ec);
int sts;
if ((sts = parseString_priv(str, keyvalSep, pairsSep, flags)) < 0) {
throws_if(ec, sts, ffmpeg_category());
}
}
void Dictionary::copyFrom(const Dictionary & other, int flags) noexcept
{
av_dict_copy(&m_raw, other.m_raw, flags);
}
void Dictionary::swap(Dictionary & other) noexcept
{
using std::swap;
swap(m_raw, other.m_raw);
swap(m_owning, other.m_owning);
}
AVDictionary *Dictionary::release()
{
m_owning = false;
auto ptr = m_raw;
m_raw = nullptr;
return ptr;
}
AVDictionary **Dictionary::rawPtr() noexcept
{
return &m_raw;
}
const char *Dictionary::Entry::key() const noexcept
{
return (m_entry ? m_entry->key : nullptr);
}
const char *Dictionary::Entry::value() const noexcept
{
return (m_entry ? m_entry->value : nullptr);
}
void Dictionary::Entry::set(const char * value, int flags) noexcept
{
if (!m_entry)
return; // TODO: return error?
av_freep(&m_entry->value);
if (flags & FlagDontStrdupVal)
{
m_entry->value = const_cast<char*>(value);
}
else
{
m_entry->value = av_strdup(value);
}
}
void Dictionary::Entry::set(const std::string & value, int flags) noexcept
{
flags &= ~FlagDontStrdupVal;
set(value.c_str(), flags);
}
bool Dictionary::Entry::isNull() const
{
return m_entry == nullptr;
}
Dictionary::Entry &Dictionary::Entry::operator=(const string & value) noexcept
{
set(value);
return *this;
}
Dictionary::Entry &Dictionary::Entry::operator=(const char * value) noexcept
{
set(value);
return *this;
}
av::Dictionary::Entry::operator bool() const
{
return m_entry != nullptr;
}
bool operator==(const Dictionary::Entry & lhs, const Dictionary::Entry & rhs)
{
return lhs.m_entry == rhs.m_entry;
}
bool operator!=(const Dictionary::Entry & lhs, const Dictionary::Entry & rhs)
{
return lhs.m_entry != rhs.m_entry;
}
DictionaryArray::DictionaryArray(std::initializer_list<Dictionary> dicts)
{
m_raws.reserve(dicts.size());
m_dicts.reserve(dicts.size());
for (auto& d : dicts)
{
m_dicts.push_back(std::move(d));
m_raws.push_back(m_dicts.back().raw());
}
}
DictionaryArray::DictionaryArray(AVDictionary ** dicts, size_t count, bool takeOwning)
{
assign(dicts, count, takeOwning);
}
DictionaryArray::DictionaryArray(const DictionaryArray &rhs)
: m_dicts(rhs.m_dicts)
{
m_raws.reserve(m_dicts.size());
for (auto &dict : m_dicts)
{
m_raws.push_back(dict.raw());
}
}
DictionaryArray &DictionaryArray::operator=(const DictionaryArray &rhs)
{
if (this != &rhs)
{
DictionaryArray(rhs).swap(*this);
}
return *this;
}
void DictionaryArray::assign(AVDictionary **dicts, size_t count, bool takeOwning)
{
if (m_raws.data() != dicts)
{
m_raws.clear();
m_raws.resize(count);
}
else
count = m_raws.size();
m_dicts.clear();
m_dicts.reserve(count);
for (size_t i = 0; i < count; ++i)
{
m_raws[i] = dicts[i];
m_dicts.push_back(Dictionary(m_raws[i], takeOwning));
}
}
void DictionaryArray::reserve(size_t size)
{
m_raws.reserve(size);
m_dicts.reserve(size);
}
void DictionaryArray::resize(size_t size)
{
m_raws.resize(size);
m_dicts.resize(size);
}
size_t DictionaryArray::size() const
{
assert(m_raws.size() == m_dicts.size());
return m_raws.size();
}
void DictionaryArray::pushBack(Dictionary&& dict)
{
m_dicts.push_back(std::move(dict));
m_raws.push_back(m_dicts.end()->raw());
}
void DictionaryArray::pushBack(const Dictionary & dict)
{
m_dicts.push_back(dict);
m_raws.push_back(m_dicts.end()->raw());
}
Dictionary &DictionaryArray::operator[](size_t index)
{
return m_dicts[index];
}
const Dictionary &DictionaryArray::at(size_t index) const
{
return m_dicts.at(index);
}
Dictionary &DictionaryArray::at(size_t index)
{
return m_dicts.at(index);
}
const AVDictionary * const *DictionaryArray::raws() const
{
return m_raws.data();
}
AVDictionary **DictionaryArray::raws()
{
return m_raws.data();
}
AVDictionary **DictionaryArray::release()
{
for (auto& d : m_dicts)
{
d.release();
}
return m_raws.data();
}
void DictionaryArray::swap(DictionaryArray & rhs)
{
std::swap(rhs.m_dicts, m_dicts);
std::swap(rhs.m_raws, m_raws);
}
const Dictionary &DictionaryArray::operator[](size_t index) const
{
return m_dicts[index];
}
} // namespace av
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