4b8dd050bf
We are getting a lot of noise from Android bug-filers who are concerned about several non-critical errors that show up when using Widevine CDM on some devices or in some use cases. To mitigate this, we are downgrading these errors to warnings. Some of these errors pertained to our legacy support. To make sure an error IS logged if problems with legacy support become critical, a new error has been added to that code path. Bug: 15136575 Change-Id: Id28bcf507f277a5d2f35a14da71bba2b118a54fe
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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LOGW("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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LOGW("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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LOGW("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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LOGW("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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LOGW("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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