// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stdint.h>
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#include <limits>
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#include "core/fxcodec/codec/codec_int.h"
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#include "testing/fx_string_testhelpers.h"
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#include "testing/gtest/include/gtest/gtest.h"
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static const OPJ_OFF_T kSkipError = static_cast<OPJ_OFF_T>(-1);
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static const OPJ_SIZE_T kReadError = static_cast<OPJ_SIZE_T>(-1);
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static const OPJ_SIZE_T kWriteError = static_cast<OPJ_SIZE_T>(-1);
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static unsigned char stream_data[] = {
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0x00, 0x01, 0x02, 0x03,
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0x84, 0x85, 0x86, 0x87, // Include some hi-bytes, too.
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};
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TEST(fxcodec, DecodeDataNullDecodeData) {
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unsigned char buffer[16];
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DecodeData* ptr = nullptr;
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// Error codes, not segvs, should callers pass us a nullptr pointer.
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, sizeof(buffer), ptr));
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EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, sizeof(buffer), ptr));
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EXPECT_EQ(kSkipError, opj_skip_from_memory(1, ptr));
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EXPECT_FALSE(opj_seek_from_memory(1, ptr));
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}
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TEST(fxcodec, DecodeDataNullStream) {
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DecodeData dd(nullptr, 0);
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unsigned char buffer[16];
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// Reads of size 0 do nothing but return an error code.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 0, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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// Reads of nonzero size do nothing but return an error code.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, sizeof(buffer), &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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// writes of size 0 do nothing but return an error code.
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EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, 0, &dd));
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// writes of nonzero size do nothing but return an error code.
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EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, sizeof(buffer), &dd));
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// Skips of size 0 always return an error code.
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EXPECT_EQ(kSkipError, opj_skip_from_memory(0, &dd));
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// Skips of nonzero size always return an error code.
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EXPECT_EQ(kSkipError, opj_skip_from_memory(1, &dd));
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// Seeks to 0 offset return in error.
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EXPECT_FALSE(opj_seek_from_memory(0, &dd));
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// Seeks to non-zero offsets return in error.
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EXPECT_FALSE(opj_seek_from_memory(1, &dd));
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}
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TEST(fxcodec, DecodeDataZeroSize) {
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DecodeData dd(stream_data, 0);
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unsigned char buffer[16];
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// Reads of size 0 do nothing but return an error code.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 0, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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// Reads of nonzero size do nothing but return an error code.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, sizeof(buffer), &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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// writes of size 0 do nothing but return an error code.
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EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, 0, &dd));
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// writes of nonzero size do nothing but return an error code.
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EXPECT_EQ(kWriteError, opj_write_from_memory(buffer, sizeof(buffer), &dd));
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// Skips of size 0 always return an error code.
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EXPECT_EQ(kSkipError, opj_skip_from_memory(0, &dd));
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// Skips of nonzero size always return an error code.
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EXPECT_EQ(kSkipError, opj_skip_from_memory(1, &dd));
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// Seeks to 0 offset return in error.
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EXPECT_FALSE(opj_seek_from_memory(0, &dd));
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// Seeks to non-zero offsets return in error.
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EXPECT_FALSE(opj_seek_from_memory(1, &dd));
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}
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TEST(fxcodec, DecodeDataReadInBounds) {
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unsigned char buffer[16];
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Exact sized read in a single call.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(8u, opj_read_from_memory(buffer, sizeof(buffer), &dd));
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EXPECT_EQ(0x00, buffer[0]);
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EXPECT_EQ(0x01, buffer[1]);
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EXPECT_EQ(0x02, buffer[2]);
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EXPECT_EQ(0x03, buffer[3]);
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EXPECT_EQ(0x84, buffer[4]);
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EXPECT_EQ(0x85, buffer[5]);
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EXPECT_EQ(0x86, buffer[6]);
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EXPECT_EQ(0x87, buffer[7]);
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EXPECT_EQ(0xbd, buffer[8]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Simple read.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(2u, opj_read_from_memory(buffer, 2, &dd));
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EXPECT_EQ(0x00, buffer[0]);
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EXPECT_EQ(0x01, buffer[1]);
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EXPECT_EQ(0xbd, buffer[2]);
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// Read of size 0 doesn't affect things.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(0u, opj_read_from_memory(buffer, 0, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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// Read exactly up to end of data.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(6u, opj_read_from_memory(buffer, 6, &dd));
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EXPECT_EQ(0x02, buffer[0]);
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EXPECT_EQ(0x03, buffer[1]);
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EXPECT_EQ(0x84, buffer[2]);
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EXPECT_EQ(0x85, buffer[3]);
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EXPECT_EQ(0x86, buffer[4]);
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EXPECT_EQ(0x87, buffer[5]);
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EXPECT_EQ(0xbd, buffer[6]);
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// Read of size 0 at EOF is still an error.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 0, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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}
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TEST(fxcodec, DecodeDataReadBeyondBounds) {
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unsigned char buffer[16];
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Read beyond bounds in a single step.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(8u, opj_read_from_memory(buffer, sizeof(buffer) + 1, &dd));
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EXPECT_EQ(0x00, buffer[0]);
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EXPECT_EQ(0x01, buffer[1]);
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EXPECT_EQ(0x02, buffer[2]);
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EXPECT_EQ(0x03, buffer[3]);
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EXPECT_EQ(0x84, buffer[4]);
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EXPECT_EQ(0x85, buffer[5]);
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EXPECT_EQ(0x86, buffer[6]);
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EXPECT_EQ(0x87, buffer[7]);
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EXPECT_EQ(0xbd, buffer[8]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Read well beyond bounds in a single step.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(8u, opj_read_from_memory(
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buffer, std::numeric_limits<OPJ_SIZE_T>::max(), &dd));
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EXPECT_EQ(0x00, buffer[0]);
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EXPECT_EQ(0x01, buffer[1]);
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EXPECT_EQ(0x02, buffer[2]);
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EXPECT_EQ(0x03, buffer[3]);
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EXPECT_EQ(0x84, buffer[4]);
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EXPECT_EQ(0x85, buffer[5]);
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EXPECT_EQ(0x86, buffer[6]);
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EXPECT_EQ(0x87, buffer[7]);
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EXPECT_EQ(0xbd, buffer[8]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Read of size 6 gets first 6 bytes.
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// rest of buffer intact.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(6u, opj_read_from_memory(buffer, 6, &dd));
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EXPECT_EQ(0x00, buffer[0]);
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EXPECT_EQ(0x01, buffer[1]);
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EXPECT_EQ(0x02, buffer[2]);
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EXPECT_EQ(0x03, buffer[3]);
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EXPECT_EQ(0x84, buffer[4]);
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EXPECT_EQ(0x85, buffer[5]);
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EXPECT_EQ(0xbd, buffer[6]);
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// Read of size 6 gets remaining two bytes.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(2u, opj_read_from_memory(buffer, 6, &dd));
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EXPECT_EQ(0x86, buffer[0]);
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EXPECT_EQ(0x87, buffer[1]);
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EXPECT_EQ(0xbd, buffer[2]);
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// Read of 6 more gets nothing and leaves rest of buffer intact.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 6, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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}
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TEST(fxcodec, DecodeDataWriteInBounds) {
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unsigned char stream[16];
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static unsigned char buffer_data[] = {
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0x00, 0x01, 0x02, 0x03, 0x80, 0x80, 0x81, 0x82, 0x83, 0x84,
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};
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{
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// Pretend the stream can only hold 4 bytes.
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DecodeData dd(stream, 4);
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memset(stream, 0xbd, sizeof(stream));
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EXPECT_EQ(4u, opj_write_from_memory(buffer_data, 4, &dd));
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EXPECT_EQ(0x00, stream[0]);
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EXPECT_EQ(0x01, stream[1]);
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EXPECT_EQ(0x02, stream[2]);
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EXPECT_EQ(0x03, stream[3]);
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EXPECT_EQ(0xbd, stream[4]);
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}
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{
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// Pretend the stream can only hold 4 bytes.
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DecodeData dd(stream, 4);
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memset(stream, 0xbd, sizeof(stream));
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EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 2, &dd));
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EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 2, &dd));
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EXPECT_EQ(0x00, stream[0]);
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EXPECT_EQ(0x01, stream[1]);
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EXPECT_EQ(0x00, stream[2]);
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EXPECT_EQ(0x01, stream[3]);
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EXPECT_EQ(0xbd, stream[4]);
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}
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}
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TEST(fxcodec, DecodeDataWriteBeyondBounds) {
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unsigned char stream[16];
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static unsigned char buffer_data[] = {
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0x10, 0x11, 0x12, 0x13, 0x94, 0x95, 0x96, 0x97,
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};
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{
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// Pretend the stream can only hold 4 bytes.
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DecodeData dd(stream, 4);
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// Write ending past EOF transfers up til EOF.
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memset(stream, 0xbd, sizeof(stream));
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EXPECT_EQ(4u, opj_write_from_memory(buffer_data, 5, &dd));
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EXPECT_EQ(0x10, stream[0]);
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EXPECT_EQ(0x11, stream[1]);
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EXPECT_EQ(0x12, stream[2]);
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EXPECT_EQ(0x13, stream[3]);
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EXPECT_EQ(0xbd, stream[4]);
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// Subsequent writes fail.
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memset(stream, 0xbd, sizeof(stream));
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EXPECT_EQ(kWriteError, opj_write_from_memory(buffer_data, 5, &dd));
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EXPECT_EQ(0xbd, stream[0]);
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}
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{
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// Pretend the stream can only hold 4 bytes.
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DecodeData dd(stream, 4);
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// Write ending past EOF (two steps) transfers up til EOF.
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memset(stream, 0xbd, sizeof(stream));
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EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 2, &dd));
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EXPECT_EQ(2u, opj_write_from_memory(buffer_data, 4, &dd));
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EXPECT_EQ(0x10, stream[0]);
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EXPECT_EQ(0x11, stream[1]);
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EXPECT_EQ(0x10, stream[2]);
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EXPECT_EQ(0x11, stream[3]);
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EXPECT_EQ(0xbd, stream[4]);
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// Subsequent writes fail.
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memset(stream, 0xbd, sizeof(stream));
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EXPECT_EQ(kWriteError, opj_write_from_memory(buffer_data, 5, &dd));
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EXPECT_EQ(0xbd, stream[0]);
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}
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}
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// Note: Some care needs to be taken here because the skip/seek functions
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// take OPJ_OFF_T's as arguments, which are typically a signed type.
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TEST(fxcodec, DecodeDataSkip) {
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unsigned char buffer[16];
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Skiping within buffer is allowed.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(1u, opj_skip_from_memory(1, &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x01, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Skiping 0 bytes changes nothing.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(0, opj_skip_from_memory(0, &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x02, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Skiping to EOS-1 is possible.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(4u, opj_skip_from_memory(4, &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x87, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Next read fails.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Skiping directly to EOS is allowed.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(8u, opj_skip_from_memory(8, &dd));
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// Next read fails.
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Skipping beyond end of stream is allowed and returns full distance.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(9u, opj_skip_from_memory(9, &dd));
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// Next read fails.
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Skipping way beyond EOS is allowd, doesn't wrap, and returns
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// full distance.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(4u, opj_skip_from_memory(4, &dd));
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EXPECT_EQ(std::numeric_limits<OPJ_OFF_T>::max(),
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opj_skip_from_memory(std::numeric_limits<OPJ_OFF_T>::max(), &dd));
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// Next read fails. If it succeeds, it may mean we wrapped.
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Negative skip within buffer not is allowed, position unchanged.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(4u, opj_skip_from_memory(4, &dd));
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EXPECT_EQ(kSkipError, opj_skip_from_memory(-2, &dd));
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// Next read succeeds as if nothing has happenned.
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x84, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Negative skip before buffer is not allowed, position unchanged.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(kSkipError, opj_skip_from_memory(-4, &dd));
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// Next read succeeds as if nothing has happenned.
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x85, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Negative skip way before buffer is not allowed, doesn't wrap
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(4u, opj_skip_from_memory(4, &dd));
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EXPECT_EQ(kSkipError,
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opj_skip_from_memory(std::numeric_limits<OPJ_OFF_T>::min(), &dd));
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// Next read succeeds. If it fails, it may mean we wrapped.
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x84, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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}
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{
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DecodeData dd(stream_data, sizeof(stream_data));
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// Negative skip after EOS isn't alowed, still EOS.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_EQ(8u, opj_skip_from_memory(8, &dd));
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EXPECT_EQ(kSkipError, opj_skip_from_memory(-4, &dd));
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// Next read fails.
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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}
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TEST(fxcodec, DecodeDataSeek) {
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unsigned char buffer[16];
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DecodeData dd(stream_data, sizeof(stream_data));
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// Seeking within buffer is allowed and read succeeds
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_TRUE(opj_seek_from_memory(1, &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x01, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Seeking before start returns error leaving position unchanged.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_FALSE(opj_seek_from_memory(-1, &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x02, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Seeking way before start returns error leaving position unchanged.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_FALSE(
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opj_seek_from_memory(std::numeric_limits<OPJ_OFF_T>::min(), &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x03, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Seeking exactly to EOS is allowed but read fails.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_TRUE(opj_seek_from_memory(8, &dd));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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// Seeking back to zero offset is allowed and read succeeds.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_TRUE(opj_seek_from_memory(0, &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x00, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Seeking beyond end of stream is allowed but read fails.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_TRUE(opj_seek_from_memory(16, &dd));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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// Seeking within buffer after seek past EOF restores good state.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_TRUE(opj_seek_from_memory(4, &dd));
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EXPECT_EQ(1u, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0x84, buffer[0]);
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EXPECT_EQ(0xbd, buffer[1]);
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// Seeking way beyond EOS is allowed, doesn't wrap, and read fails.
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memset(buffer, 0xbd, sizeof(buffer));
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EXPECT_TRUE(opj_seek_from_memory(std::numeric_limits<OPJ_OFF_T>::max(), &dd));
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EXPECT_EQ(kReadError, opj_read_from_memory(buffer, 1, &dd));
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EXPECT_EQ(0xbd, buffer[0]);
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}
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TEST(fxcodec, YUV420ToRGB) {
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opj_image_comp_t u;
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memset(&u, 0, sizeof(u));
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u.dx = 1;
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u.dy = 1;
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u.w = 16;
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u.h = 16;
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u.prec = 8;
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u.bpp = 8;
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opj_image_comp_t v;
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memset(&v, 0, sizeof(v));
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v.dx = 1;
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v.dy = 1;
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v.w = 16;
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v.h = 16;
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v.prec = 8;
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v.bpp = 8;
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opj_image_comp_t y;
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memset(&y, 0, sizeof(y));
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y.dx = 1;
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y.dy = 1;
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y.prec = 8;
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y.bpp = 8;
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opj_image_t img;
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memset(&img, 0, sizeof(img));
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img.numcomps = 3;
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img.color_space = OPJ_CLRSPC_SYCC;
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img.comps = FX_Alloc(opj_image_comp_t, 3);
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const struct {
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OPJ_UINT32 w;
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bool expected;
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} cases[] = {{0, false}, {1, false}, {30, false}, {31, true},
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{32, true}, {33, false}, {34, false}, {UINT_MAX, false}};
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for (size_t i = 0; i < sizeof(cases) / sizeof(cases[0]); ++i) {
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y.w = cases[i].w;
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y.h = y.w;
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img.x1 = y.w;
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img.y1 = y.h;
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y.data = FX_Alloc(OPJ_INT32, y.w * y.h);
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memset(y.data, 1, y.w * y.h * sizeof(OPJ_INT32));
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u.data = FX_Alloc(OPJ_INT32, u.w * u.h);
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memset(u.data, 0, u.w * u.h * sizeof(OPJ_INT32));
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v.data = FX_Alloc(OPJ_INT32, v.w * v.h);
|
memset(v.data, 0, v.w * v.h * sizeof(OPJ_INT32));
|
img.comps[0] = y;
|
img.comps[1] = u;
|
img.comps[2] = v;
|
sycc420_to_rgb(&img);
|
if (cases[i].expected) {
|
EXPECT_EQ(img.comps[0].w, img.comps[1].w);
|
EXPECT_EQ(img.comps[0].h, img.comps[1].h);
|
EXPECT_EQ(img.comps[0].w, img.comps[2].w);
|
EXPECT_EQ(img.comps[0].h, img.comps[2].h);
|
} else {
|
EXPECT_NE(img.comps[0].w, img.comps[1].w);
|
EXPECT_NE(img.comps[0].h, img.comps[1].h);
|
EXPECT_NE(img.comps[0].w, img.comps[2].w);
|
EXPECT_NE(img.comps[0].h, img.comps[2].h);
|
}
|
FX_Free(img.comps[0].data);
|
FX_Free(img.comps[1].data);
|
FX_Free(img.comps[2].data);
|
}
|
FX_Free(img.comps);
|
}
|
