6bac5bc50d
This CL removes TODOs and email addresses from comments, unifies some namespaces and cleans a few variable names. It is a copy of multiple CLs on the widevine side. Change-Id: I1bb649096476a5001a56d746427399de6a88ff69
98 lines
2.2 KiB
C++
98 lines
2.2 KiB
C++
// Copyright 2012 Google Inc. All Rights Reserved.
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#include "buffer_reader.h"
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#include "log.h"
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namespace wvcdm {
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bool BufferReader::Read1(uint8_t* v) {
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if (!HasBytes(1)) {
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LOGE("BufferReader::Read1 : Failure while parsing: Not enough bytes (1)");
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return false;
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}
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*v = buf_[pos_++];
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return true;
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}
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// Internal implementation of multi-byte reads
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template<typename T> bool BufferReader::Read(T* v) {
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if (!HasBytes(sizeof(T))) {
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LOGE("BufferReader::Read<T> : Failure during parse: Not enough bytes (%u)",
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sizeof(T));
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return false;
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}
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T tmp = 0;
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for (size_t i = 0; i < sizeof(T); i++) {
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tmp <<= 8;
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tmp += buf_[pos_++];
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}
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*v = tmp;
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return true;
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}
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bool BufferReader::Read2(uint16_t* v) { return Read(v); }
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bool BufferReader::Read2s(int16_t* v) { return Read(v); }
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bool BufferReader::Read4(uint32_t* v) { return Read(v); }
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bool BufferReader::Read4s(int32_t* v) { return Read(v); }
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bool BufferReader::Read8(uint64_t* v) { return Read(v); }
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bool BufferReader::Read8s(int64_t* v) { return Read(v); }
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bool BufferReader::ReadString(std::string* str, int count) {
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if (!HasBytes(count)) {
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LOGE("BufferReader::ReadString : Parse Failure: Not enough bytes (%d)",
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count);
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return false;
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}
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str->assign(buf_ + pos_, buf_ + pos_ + count);
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pos_ += count;
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return true;
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}
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bool BufferReader::ReadVec(std::vector<uint8_t>* vec, int count) {
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if (!HasBytes(count)) {
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LOGE("BufferReader::ReadVec : Parse Failure: Not enough bytes (%d)", count);
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return false;
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}
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vec->clear();
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vec->insert(vec->end(), buf_ + pos_, buf_ + pos_ + count);
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pos_ += count;
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return true;
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}
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bool BufferReader::SkipBytes(int bytes) {
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if (!HasBytes(bytes)) {
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LOGE("BufferReader::SkipBytes : Parse Failure: Not enough bytes (%d)",
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bytes);
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return false;
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}
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pos_ += bytes;
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return true;
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}
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bool BufferReader::Read4Into8(uint64_t* v) {
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uint32_t tmp;
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if (!Read4(&tmp)) {
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return false;
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}
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*v = tmp;
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return true;
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}
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bool BufferReader::Read4sInto8s(int64_t* v) {
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// Beware of the need for sign extension.
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int32_t tmp;
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if (!Read4s(&tmp)) {
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return false;
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}
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*v = tmp;
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return true;
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}
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} // namespace wvcdm
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